JPH0472594B2 - - Google Patents

Description

[Detailed description of the invention]

The present invention provides a high-temperature heat-resistant, heat-insulating material that has excellent high-temperature heat resistance and heat insulation properties, and also has excellent corrosion resistance in salt water, sulfur dioxide gas, and other harsh corrosive environments for metal members such as steel.
Regarding anti-rust coatings. Insulating materials are important materials from the viewpoint of resource and energy conservation, and are especially used in heating equipment, kitchen equipment, heating heat sources, high-temperature reaction towers, and even heat storage devices used for heat transport, which are often made of iron-based materials. The walls of pipes, etc. are in a high temperature atmosphere, and in many cases,
It is placed in an environment of corrosive gas such as salt water or sulfur dioxide gas. High-temperature reaction towers, transport pipelines, heat storages, boilers, especially in complexes in coastal areas,
Blast furnace plants, incineration plants, etc. are directly exposed to salty sea breeze, and steam from oil tankers and steam pipes for hot water lines are often covered with seawater. Furthermore, automobile exhaust pipes are exposed to harsh environments where they are rapidly heated and cooled. Preventing heat dissipation from these walls and preventing overheating accidents are important issues in terms of energy conservation, occupational safety and health, and even disaster prevention, and it is desired to develop a heat insulating material with excellent high temperature resistance that can be applied to these issues. was.
Such heat insulating materials must have heat resistance that can withstand an atmosphere of 200 to 600°C, so it is considered difficult to use organic materials, and various inorganic heat insulating materials have been developed. From the viewpoint of heat insulating materials, various types of organic heat insulating materials have been developed, such as polyurethane foam, polystyrene foam, and polyethylene foam, which have a closed cell structure, and are considered to be suitable as heat insulating materials. However, the heat resistance temperature during long-term use is 150℃ or less. On the other hand, inorganic heat insulating materials include inorganic binders such as calcium silicate and alkali silicate filled with fibers such as asbestos, insulating molded products with a partially foamed structure, or simply inorganic fibers such as glass fiber, asbestos, and rock wool. An insulation method has been adopted in which these materials are coated in contact with the vessel wall, but it is difficult to apply to complex shapes, insulation work tends to be carried out on site, and construction as designed is not completely carried out. This makes it difficult to confirm that they are present. It should be noted that the development of paints with excellent high-temperature resistance, especially binders, is a major issue in the paint industry.As such binders, inorganic binders such as silicic binders,
There are phosphoric acid binders, but their adhesion to metals, bending resistance, water resistance, chemical resistance, and resistance to penetration by salt water, corrosive gases, etc., are insufficient.On the other hand, organic binders are However, there was a problem in that many of them had a normal heat resistance temperature of 150°C or lower. As an organic binder, organopolysiloxane binders are known to have excellent heat resistance at temperatures above 200°C, and are widely used as heat-resistant paints, but there are various limitations in their application conditions. However, it has only been used as a high-temperature heat-resistant paint, but it has not yet led to the development of a heat-insulating and rust-preventing paint that has excellent high-temperature heat resistance and heat insulation properties, and also has rust prevention properties for iron-based parts. Ta. The present inventor has previously completed an invention relating to a solar heat shielding coating composition and a fireproof heat insulating coating as a heat insulating coating material utilizing alkali metal titanate, particularly potassium titanate, and the invention is pending for patent application, but from the viewpoint of resource saving and energy saving. When developing a heat-insulating and rust-preventing paint that has excellent high-temperature heat resistance and can be applied to the inner surface of the vessel wall if necessary, we focused on the composition of the paint, its heat-insulating properties, heat resistance, and especially its rust-proofing properties and adhesion to iron-based components. I learned that there were improvements that only those who were actually involved in the development could understand. An object of the present invention is to provide a coating that is excellent in high temperature resistance, heat insulation, and rust prevention. Another object of the present invention is to provide a coating that has excellent high-temperature heat resistance, heat insulation properties, and rust prevention properties and can coat the inner surface of a vessel wall to reduce heat loss due to heat conduction through the vessel wall material. In the present invention, a primer paint containing a titanate, a silicone resin binder, and a rust preventive agent is applied to the object to be coated, and a top coat containing a titanate and a silicone resin binder is applied thereon. Concerning high-temperature heat-resistant, heat-insulating and rust-proof coatings. That is, the present inventors first developed a high-temperature heat-resistant, heat-insulating,
He has completed the invention of an anti-corrosion paint and is currently applying for a patent.This paint exhibits excellent high-temperature heat resistance, heat insulation, and anti-corrosion functions even when used alone as a primer. However, even with such a coating system, the amount of fumes and gases such as salt water and sulfur dioxide gas is low, and
Sufficient effects cannot yet be expected in environments where the product is placed at high temperatures of ℃ or higher. The inventors of the present invention conducted intensive research in view of the above points, and found that a primer paint containing titanate, a silicone resin binder, and a rust preventive agent was applied to the object to be coated, and then a primer paint containing titanate and silicon It has been found that by applying a top coat containing a resinous binder, a coating that is sufficiently practical can be obtained even under the above-mentioned harsh environments. In the present invention, the objects to be coated include, for example, heating equipment, kitchen equipment, superheating heat sources, high-temperature reaction towers, and walls of vessels such as heat storage devices and piping used for heat transport.
Examples include transportation pipelines, boilers, blast furnace plants, incineration plants, steam from oil tankers, steam pipes from hot water lines, and automobile exhaust pipes. In the present invention, the titanate is an alkali metal titanate represented by M ₂ O・nTiO ₂ or LO・nTiO ₂ (M is an alkali metal, L is an alkaline earth metal, and n is a positive real number of 8 or less). Alternatively, alkaline earth metal titanates can be exemplified.
Preferred specific examples include lithium titanate, sodium titanate, potassium titanate, rubidium titanate, cesium titanate, francium titanate,
These include beryllium titanate, magnesium titanate, calcium titanate, strontium titanate, barium titanate, and radium titanate.
Any of these may be used in the form of fibrous crystals, crystal powders, crushed products of melts, or powders thereof, but in the present invention, fibrous crystals with a high refractive index are used. Titanates are particularly preferred. Furthermore, by treating titanate crystals with an inorganic acid such as hydrochloric acid, washing with water, and drying, it is possible to obtain titanate with some of the alkali atoms or alkaline earth atoms extracted. The paint using titanate had better high-temperature heat resistance and better coating film properties than paint using titanate. The silicone resin binder used in the present invention includes an organopolysiloxane binder, a polyacryloxyalkylalkoxysilane binder,
The organopolysiloxane binder includes at least one substituent such as hydrogen, vinyl group, allyl group, hydroxyl group, alkoxy group having 1 to 4 carbon atoms, amino group, mercabuto group, etc. Straight silicone resins such as polydimethylsiloxane, polydiphenylsiloxane, polymethylphenylsiloxane, and copolymers thereof, epoxy-modified silicone resins made by reacting straight silicone resins with epoxy resins, and straight silicone resins. a polyester-modified silicone resin made of a condensate of a straight silicone resin and a fatty acid, a polybasic acid, and a polyhydric alcohol, or an alkyd-modified silicone resin made by reacting a straight silicone resin with an alkyd resin; Straight silicone resin and melamine formaldehyde resin,
Urea formaldehyde resin, benzoguanamine,
Silicone made of one or a mixture of two or more straight silicone resins and modified silicone resins, such as guanamine resin made by reacting acetoguanamine etc. with formaldehyde, and amino resin modified silicone resin made by reacting amino resin such as phenol formaldehyde resin. It is a resin-based binder, and in the case of polydimethylsiloxane-based binder, CH ₃ /Si
Those with a ratio of 1.2 or more and 1.9 or less, particularly 1.3 to 1.7 are preferable, and polydiphenylsiloxane, polymethylphenylsiloxane, and their copolymers polydimethylsiloxane and polydiphenylsiloxane and/or polymethylphenyl Phenyl group-containing polysiloxane compounds such as copolymers with siloxane can be used alone as the binder of the present invention, but include epoxy-modified silicone resins, polyester-modified silicone resins, alkyd-modified silicone resins, amino resin-modified silicone resins, etc. When one or a mixture of two or more modified silicone resins is used as a binder, excellent heat-resistant adhesive strength can be achieved, especially at temperatures between 200 and 300°C.
Improved heat-resistant adhesive strength. In addition, when a modified silicone resin or a mixture of a modified silicone resin and a straight silicone resin is used as a binder, it is preferable that the polysiloxane component is contained in the binder component in an amount of 20% by weight or more, preferably 30% by weight or more. ,
When the polysiloxane component is 20% by weight or more, the heat resistance is extremely excellent even at temperatures above 200°C. For the organopolysiloxane binder of the present invention, epoxy resins, polyester resins, alkyd resins, amino resins, acrylic resins, and even ethylene-vinyl acetate copolymers, which are commonly used as paint binders, are used as binders. Among them, it can be used in combination with the organopolysiloxane binder of the present invention as long as the polysiloxane component does not fall below 20% by weight. As a polyacryloxyalkylalkoxysilane binder, the general formula (R is a monovalent hydrocarbon group having 1 to 10 carbon atoms, R' is hydrogen or a monovalent hydrocarbon group having 1 to 12 carbon atoms, R'' is a divalent hydrocarbon group having 2 to 10 carbon atoms, and a is 1-3
_is an _integer of Hydrogen, Cl, carbon number 1
~10 monovalent hydrocarbon groups, vinyl phenyl group, pyridyl group, 2-oxo-1-pyrrolidinyl group, cyano group,

【formula】 【formula】

A group selected from [Formula], (where R' is the same as above, Z is
_{OCH2CH2OH ,}

[Formula] NH ₂ , N-methylol group, N-alkoxymethylol group] Mention may be made of polymers obtained from reactions in the presence of agents and organic solvents. Examples of monovalent hydrocarbons suitable as R and R' in the acryloxyalkylalkoxysilane compound include alkyl groups such as methyl, ethyl, propyl, butyl, pentyl, hexyl, octyl, and decyl, phenyl, naphthyl, tolyl, Aryl groups such as xylyl, cumenyl, and ethyl phenyl, aralkyl groups such as benzyl, α-phenylethyl, β-phenylethyl, and α-phenylbutyl, and examples of divalent hydrocarbon groups suitable as R″ include ethylene, trimethylene, and tetramethylene. , hexamethylene, octamethylene, etc. General formula used here: CH ₂ =C(X)(Y)
Examples of suitable α,β-unsaturated compounds or derivatives thereof represented by [X, Y are the same as above] include vinyl chloride, vinylidene chloride, vinyl acetate,
Vinyl compounds such as vinyl propionate, vinyl butyrate, styrene, vinyltoluene, divinylbenzene, vinylpyridine, and vinylpyrrolidone; acrylic acids such as acrylonitrile, methacrylonitrile, methyl acrylate, ethyl acrylate, butyl acrylate, 2-ethylhexyl acrylate, and lauryl acrylate. Esters, methyl methacrylate, ethyl methacrylate,
Methacrylic acid esters such as butyl methacrylate, 2-ethylhexyl methacrylate, lauryl methacrylate, acrylic acid, acrylamide, N-methylol acrylamide, N-
Methoxymethylacrylamide, N-butoxymethylacrylamide, glycidyl acrylate,
Acrylics having reactive groups such as 2-hydroxyethyl acrylate, methacrylic acid, methacrylic acid amide, N-methylolmethacrylamide, N-methoxymethylmethacrylamide, N-butoxymethylmethacrylamide, glycidylmethacrylate, 2-hydroxyethylmethacrylate, etc. and methacrylic compounds. In the polyacrylooxyalkylalkoxysilane binder, it is necessary that the binder contains at least 20% by weight, preferably 30% by weight or more of the acrylooxyalkylalkoxysilane compound. The silane compound has particularly excellent heat resistance within this range. In addition, acrylic and methacrylic compounds having reactive groups in the polyacrylooxyalkylalkoxysilane binder, especially N-methylolacrylamide, N-methoxymethylacrylamide, N
- It is preferable that the binder contains 5 to 20% by weight of acrylamide and its derivatives such as butoxymethylacrylamide, glycidyl methacrylate, 2-hydroxyethyl methacrylate, etc., and 5 to 30% of acrylonitrile as other compounds. It was particularly preferable that the content was % by weight. The characteristics of using a polyacrylooxyalkyl alkoxysilane binder are that it gives favorable results in terms of adhesion to metals, flexibility of the coating film, water resistance, boiling water resistance, and weather resistance. 20-50% by weight Alkoxysilane acrylonitrile 5-30 〃 Reactive acrylic compound 5-20 〃 Acrylic acid or meth 5-60 〃 Consisting of a copolymerization composition of ester of acrylic acid, intrinsic viscosity [η Polyacrylooxyalkylalkoxysilane binders having a value of 0.5 to 2.0 were preferred in terms of adhesiveness, water resistance, weather resistance, and heat resistance. general formula [a is an integer from 1 to 3, B is OR' or OR''-
Similar to acryloxyalkylalkoxysilane compounds, the vinylsilane compound represented by OR′ (R′, R″ are the same as above) is also used alone or together with CH ₂ =C(X)(Y) [X, Y are the same as above. Polymers are obtained from the reaction with one or a mixture of one or more α,β-unsaturated compounds or derivatives thereof, represented by The binder of the present invention can also be obtained by equivalently substituting or mixing with an acryloxyalkylalkoxysilane compound.Preferable examples of the vinylsilane compound of the present invention include R′ when methyl, ethyl, It is a propyl or butyl group, and R″ is an ethylene, trimethylene or tetramethylene group. The rust preventive used in the present invention includes various acids.
Examples include Pb, Zn, and Cr salts. Examples of acids include aliphatic basic acids or diacids, aromatic monobasic or dibasic acids, aminocarboxylic acids, 1-hydroxybenzotriazole, tannic acid, and the like. These rust preventives can be used alone or in combination of two or more. Examples of aliphatic monobasic acids are caproic acid, caprylic acid, capric acid, lauric acid, myristic acid, etc., and examples of aliphatic dibasic acids are suberic acid, azelaic acid, sebacic acid, etc. Further examples of aromatic monobasic acids include o, m, p-nitrobenzoic acid, 2,
4- or 3,5-dinitrobenzoic acid, o, m, p
-aminobenzoic acid, cinnamic acid, nitrocinnamic acid,
o, m, p-toluic acid, cumic acid, p-tert-
Examples of aromatic dibasic acids include phthalic acid, nitrophthalic acid, etc. Examples of aminocarboxylic acids include 2-ethylhexylaminopropionic acid, cyclohexylaminopropionic acid, aminolauric acid, aminomyristic acid, aminocaprylic acid, aminocapric acid,
aminopalmitic acid, etc. Paints containing these anti-rust agents are penetrating anti-corrosion paints for iron-based parts, and can be used not only for iron-based parts with late-stage rust, but also for parts that have already developed rust, and are completely cleansed (rust-prevented). Even if it is not, it has sufficient rust prevention performance in a high temperature atmosphere and in the presence of salt water and/or corrosive gas. The primer paint and/or top coat of the present invention may further contain one or more of an inorganic filler, a colorant, and an organic solvent, if necessary. In particular, it is suitable to use a high density filler, a high refractive index filler, and a plate-like mineral filler together as the inorganic filler. High-density fillers are particularly those with a specific gravity of 2.8 or higher, such as dolomite, aragonite, apatite, spinel, corundum, zircon minerals or synthetic mineral powders, and fused phosphorus as a solid solution. Fertilizers or similar compositions produced by the same process, frits, as well as powder granules, fibers and foams of high density glass. Further, the high refractive index filler is preferably one having a refractive index of 1.50 or more, and the high-density fillers exemplified above all have a refractive index of 1.50 or more and are suitable inorganic fillers for the present invention. Such high density, high refractive index fillers include dolomite (SG2.8~2.9, n1.50~1.68), magnesite (SG3.0~3.1, n1.51~1.72), and aragonite (SG2.9~3.0, n1). .53~1.68) Apatite (SG3.1~3.2, n1.63~1.64) Spinel (SG3.5~3.6, n1.72~1.73) Corundum (SG3.9~4.0, n1.76~1.77) Zircon (SG3 Powders of crushed products of natural and synthetic minerals such as silicon carbide (SG3.17, n2.65-2.69) were suitable, and as a solid solution, fused phosphorus fertilizer was suitable. As the platy mineral filler, there are clay minerals, mica minerals, etc., and natural and synthetic mica powders are particularly suitable. Next, inorganic fillers can be used alone or mixed in any proportion, but in particular, apatite, zircon sand, zircon flour, synthetic spinel, corundum, etc. can be supplied at relatively low cost.
As a solid melt, frit is readily available, and fused phosphorus fertilizer or its analogues are inexpensive materials that can be processed into granules, fibers, and foams to improve heat insulation and improve paint film formation. It was suitable for reinforcement. It is also possible to use ordinary fillers such as colored pigments and extender pigments that are commonly used as inorganic fillers, but it is also effective to use inorganic micro hollow bodies with a high refractive index such as shirasu balloons and alumina balloons. It was hot. The primer paint used in the present invention is characterized by the combined use of a titanate, a silicone resin binder, a rust preventive, and if necessary a colorant, an inorganic filler, an organic medium, etc. The ratio of silicone resin binder (expressed by weight unless otherwise specified) is 25 to 2,000 parts, especially 50 to 1,000 parts of silicone resin binder to 100 parts of titanate.
Furthermore, it was suitable to use 100 to 500 parts. The mixing ratio of these cannot be strictly specified depending on the type of silicone resin binder used, but in general, the above ratio of silicone resin binder to 100 parts of titanate is
A content in the range of 25 to 2000 parts is preferable because the binding strength of the binder is high, the coating function is fully exhibited, and the heat insulating effect is also excellent. In addition, the ratio of titanate and rust preventive is 1 to 100 parts of rust preventive to 100 parts of titanate,
In particular, it is suitable to use 3 to 90 parts. In the above range, excellent rust prevention and economic efficiency can be obtained. When using an inorganic filler, titanate 10~
90 parts, inorganic filler in the range of 90 to 10 parts, and for a total of 100 parts of these, the binder in the range of 25 to 2000 parts, especially 50 to 10 parts.
1000 parts, more preferably 100 to 500 parts. There is an interaction between the proportions of titanate and inorganic filler, especially when titanate is 20 to 70 parts and inorganic filler is
Excellent heat insulation properties were shown when the mixture was 80 to 30 parts. The proportions of titanate, silicone resin binder, and optionally used inorganic filler in the top coating of the present invention are preferably in the same range as in the primer coating described above. The method for producing the primer paint and top coat used in the present invention includes, for example, an organic solvent solution of a silicone resin binder, a titanate, a rust preventive agent (in the case of a primer paint), an inorganic filler, a coloring agent, and a conventionally used curing aid for silicone resin binders,
It can be manufactured by mixing and dispersing a dispersant, a viscosity modifier, etc. using a high-speed rotating mixer, roll mill, ball mill, sand mill, etc. In addition, as a method for forming a coating film, commonly used coating methods such as brush coating, air spray coating, airless spray coating, and even dipping coating methods can be applied, and at this time, a diluting solvent may be added if necessary. . A coating film of the paint of the present invention can be obtained by heating and drying the coating coated by this method at room temperature or, if necessary, at 150 to 200°C for about 20 to 120 minutes. In the present invention, after applying the primer paint and/or top coat paint, it is preferable to pressure-cover (tape) the applied area using a woven or non-woven fabric, thereby obtaining a coating with even better performance. be able to. Examples of woven fabrics used in the present invention include organic fiber fabrics such as jute linen fabric, polyester woven fabric, and polyamide fiber fabric; glass fiber fabric, asbestos fiber fabric, alumina fiber fabric, carbon fiber fabric, and stainless steel fabric. Inorganic fiber cloth such as
Examples include organic nonwoven fabrics such as pike felt and Kynor felt; inorganic nonwoven fabrics such as carbon fiber nonwoven fabrics (Pyromex Felt 200, etc.) and silica-alumina nonwoven fabrics (Fineflex 1300, etc.); Two or more types can be used. Further, in the present invention, the primer paint can be applied to the object to be coated one or more times, and similarly the top coat can also be applied one or more times. By applying the coating multiple times in this way, better high-temperature heat resistance, heat insulation, and corrosion resistance can be obtained. Further, in the present invention, after applying the top coat and taping, it is also possible to apply the top coat again. The present invention will be explained below with reference to Examples. The formulation examples of the paint used in the present invention are as follows. Paint formulation example 1 (1) Primer Fibrous potassium titanate (manufactured by Otsuka Chemical, Teismo L) 70 parts by weight (same below), zinc azelate 90 parts, zircon sand 19 parts, Aerosil
R972 (1 part) was added to 82 parts of addition-polymerized silicone resin (SP7268, nonvolatile content 99.3%, manufactured by Toray Silicone Co., Ltd.), and 101 parts of xylene was added.
of the mixture was added, and premixing was performed for about 30 minutes using a disperser. Next, main dispersion was carried out using a water-cooled three-roll mill, and then 40 parts of xylene was further added and dissolved until uniform using a disper to obtain a main ingredient of a primer. The above primer should be mixed with 403 parts of the base agent before use.
1.6 parts of curing catalyst was added. (2) Top coating paint Teismo L (15 parts), Titanium White JR602 (4 parts),
Add Hygilite H32 (60 parts) to SP7268 (80 parts), plus 1 part Antigel and xylene.
120 parts were added and dispersed using a disper according to the above procedure, followed by main dispersion using a roll mill. Next, 70 parts of xylene was added and dissolved until uniform using a disper to obtain a main ingredient for a top coat. The above top coat has a curing catalyst for 350 parts of the main agent.
1.6 parts were added. Incidentally, the above zinc azelaate was prepared according to the following procedure. (1) Caustic soda 400 parts by weight (2) Deionized water 5600 (3) Azelaic acid 941 (4) Zinc chloride (90% content) 682 (5) Deionized water 2320 Prepare a solution of caustic soda using (1) and (2). To this solution, (3) was gradually added and dissolved while stirring to obtain a transparent liquid. Add (4) to the prepared alkaline solution of (3) with stirring.
The aqueous solution obtained in (5) was gradually added to obtain a white precipitate. This precipitate is filtered under reduced pressure, the precipitate is washed with deionized water, and the filtering is repeated.
The aqueous solution of silver nitrate was continued until no more than a trace of a white precipitate reaction was observed in the filtrate. The precipitate thus obtained was dried in a hot air dryer until the weight loss became constant. Yield: 1240 copies. Paint formulation example 2 (1) Primer fibrous potassium titanate (manufactured by Otsuka Chemical, Teismo D) 80 parts, chromium tannate 50 parts, WG mica 325 (10 parts), Fritz XD10AP (120 parts)
In addition to 210 parts of TSR194 (manufactured by Toshiba Silicone Corporation, epoxy-modified silicone resin, nonvolatile content 50%), 100 parts of xylene was added, and premixing was performed using a disper according to paint formulation example 1. Next, main dispersion was carried out using a roll mill, 50 parts of xylene was added, and the mixture was dissolved using a disper to obtain a primer. (2) Top coating paint Teismo D (15 parts), Aerosil R972 (1 part),
Alpaste 100MSR (18 parts), Alpaste
Pour 300M (18 parts) into 144 parts of xylene, stir and disperse with a disper for about 60 minutes, and then add SP7268.
(40 parts) was added and dissolved for about 15 minutes to obtain the main ingredient of the top coat. During use, 0.8 parts of a curing catalyst was added to 236 parts of the above base resin. Notes (1) Fritz XD10AP is manufactured by Nippon Fellow Co., Ltd. (2) Alpaste 100MSR and 300M are manufactured by Toyo Aluminum Co., Ltd. Example 1 In the steam pipe of the steam and hot water line of an oil tanker (diameter 47 mm, surface temperature 180°C) The coating material of Formulation Example 1 was applied and tested according to the following steps. (1) Preparation of the base surface Remove old aged paint and loose rust,
The base surface was prepared by wiping with a rag soaked in xylene. (2) Coating the primer The viscosity was adjusted by adding xylene to the primer in Formulation Example 1, and the coating amount was 110~
It was applied once with air spray to give a weight of 120 g/m ² . (3) Application of primer After about 5 hours, the primer described in (2) above was applied according to (2) above. (4) Application of top coat paint Add xylene to the top coat paint of Formulation Example 1 to adjust the viscosity, and the applied amount is 120 to 130 in terms of undiluted solution.
It was applied once to give a weight of g/m ² . (5) Coating of top coat After about 24 hours, the top coat of (4) above was applied according to (4) so that the coating amount was about 120 to 130 g/m ² in terms of the stock solution. Comparative Example 1 The base surface was adjusted according to Example 1 and Formulation Example 1
The amount of primer applied is 120 to 130 g/converted to the undiluted solution.
Apply once with a brush so that the area is ² m2, and after about 5 hours,
The same primer was applied similarly. Comparative Example 2 Comparative Example 1 was further coated with the same primer once. Comparative Example 3 A commercially available chlorinated rubber base marine paint primer and top coat (light gray color) were coated and finished in accordance with Example 1. Amount of primer applied 120 to 130 g/m in terms of undiluted solution Number of ² coats 2 times Amount of top coat applied 120 to 130 g/m in terms of undiluted solution Number of ² coats 8 times Example 2 Exhaust of a passenger car (displacement 1,600 cc) The paint of Formulation Example 2 was coated on the outer surface of a pipe according to the following process and tested. (1) Adjustment of the base surface The peeling paint film and floating rust were removed and the base surface was prepared by wiping with a rag soaked in xylene. (2) Coating the primer Add xylene to the primer from Formulation Example 2 and adjust the viscosity to 13 seconds (Food Cup No. 4), and then apply the mixture using air so that the coating amount is 120 to 130 g/cm ² in terms of the undiluted solution. One coat was applied by spray. (3) Application of primer After about 1 hour, the primer described in (2) above was applied according to (2) above. (4) Application of top coat paint Add xylene to the top coat paint from Formulation Example 2 to adjust the viscosity, and the applied amount is 100 to 110 in terms of undiluted solution.
It was applied by air spray at a concentration of g/m ² . (5) Application of top coat paint Approximately 2 hours after the completion of step (4), the top coat paint was applied again according to (4). Example 3 The paint of Formulation Example 2 was applied to the outer surface of the exhaust pipe of a passenger car (displacement 1,600 cc) according to the following process and tested. (1) Adjustment of base surface Same as Example 2. (2) Coating the primer Add xylene to the primer from Formulation Example 2 and adjust the viscosity to 13 seconds (Food Cup No. 4), and then apply the mixture using air so that the coating amount is 120 to 130 g/cm ² in terms of the undiluted solution. One coat was applied by spray. (3) Application of top coat paint Add xylene to the top coat paint from Formulation Example 2 to adjust the viscosity, and the applied amount is 200 to 220 in terms of actual liquid.
It was applied by air spraying wet-on-wet to give a coating weight of g/m ² . Comparative Example 4 A base surface was prepared according to Example 2, and the amount of primer of Formulation Example 2 applied was 120 to 130 in terms of undiluted solution.
Apply once with air spray to give g/ ^m2 ,
Approximately 1 hour later, the same primer was similarly applied. Comparative Example 5 Comparative Example 4 was further coated with the same primer once. Example 4 A test was carried out by applying and taping the paint of Formulation Example 1 to a steam pipe of an oil tanker's steam and hot water line (diameter: 47 mm, surface temperature: 180°C) according to the following process. (1) Preparation of base surface Same as Example 1. (2) Coating the primer The viscosity was adjusted by adding xylene to the primer in Formulation Example 1, and the coating amount was 140 ~
It was applied once with a brush at a density of 150 g/m ² . (3) Primer coating and taping After about 5 hours, apply the primer described in (2) above according to (2) above, leave it for about 30 minutes, and apply glass tape (manufactured by Nittobo Co., Ltd., WL-110). : Thickness 0.1mm,
(width 10 cm) was wrapped with a wrap rate of 50%. (4) Application of top coat paint The viscosity of the top coat paint from Formulation Example 1 was adjusted by adding xylene, and the applied amount was 180 to 200 in terms of the undiluted solution.
It was applied once with a brush at a concentration of g/m ² . (5) Coating of top coat After about 24 hours, the top coat of (4) above was applied according to (4) so that the coating amount was about 200 to 220 g/m ² in terms of the stock solution. (6) Coating of top coat After about 8 hours, the top coat of (4) above was applied according to (4) in an amount of about 180 to 200 g/m ² in terms of the stock solution. Example 5 A test was carried out by applying and taping the paint of Formulation Example 1 to a steam pipe of an oil tanker's steam and hot water line (diameter: 47 mm, surface temperature: 180°C) according to the following steps. (1) Preparation of base surface Same as Example 1. (2) Coating the primer The viscosity was adjusted by adding xylene to the primer in Formulation Example 1, and the coating amount was 140~140 in terms of the undiluted solution.
It was applied once with a brush at a density of 150 g/m ² . (3) Application of primer After about 5 hours, the primer described in (2) above was applied according to (2) above. (4) Coating and taping of top coat The top coat of Formulation Example 1 has a viscosity adjusted by adding xylene, and the applied amount is 180 to 200 in terms of undiluted solution.
It was applied once with a brush at a concentration of g/m ² , left for about 30 minutes, and then wrapped with the glass tape used in Example 4 at a wrap rate of 50%. (5) Applying the top coat After about 24 hours, apply the top coat from (4) above onto the tape wrapped according to (4), with an amount of coating of about 200 to 220 g/m ² in terms of undiluted solution. It was painted like this. (6) Coating of top coat After about 8 hours, the top coat of (4) above was applied according to (4) in an amount of about 180 to 200 g/m ² in terms of the stock solution. Comparative Example 6 A commercially available chlorinated rubber marine paint primer and top coat (light gray color) were used for coating and taping as described above. Example 6 A finishing test was conducted by applying and taping the paint of Formulation Example 2 on the outer surface of the exhaust pipe of a passenger car (displacement 1,600 cc) according to the following process. (1) Adjustment of base surface Same as Example 2. (2) Applying the primer Add xylene to the primer from Formulation Example 2 and adjust the viscosity to 13 seconds (foed cup 10.4), then use air spray to achieve a coating amount of 110 to 120 g/cm ² in terms of undiluted solution. Applied once. (3) Coating and taping of primer After about 1 hour, the primer described in (2) above was applied according to (2) above, and the glass tape used in Example 4 was wrapped at a wrap rate of 50%. (4) Application of top coat paint The viscosity of the top coat paint in Formulation Example 2 was adjusted by adding xylene, and the applied amount was 140 to 150 in terms of the undiluted solution.
It was applied with a brush at a concentration of g/m ² . (5) Applying the top coat Approximately 2 hours after completing step (4), add xylene to the top coat of Formulation Example 2, adjust the viscosity to 15 seconds (Food Cup No. 4), and apply the coating amount using air spray. It was coated and finished so that the amount was 160 to 180 g/m ² (wet-on-wet) in terms of the stock solution. Example 7 A finishing test was conducted by applying and taping the paint of Formulation Example 2 on the outer surface of the exhaust pipe of a passenger car (displacement 1,600 cc) according to the following process. (1) Adjustment of base surface Same as Example 2. (2) Coating the primer Add xylene to the primer from Formulation Example 2, adjust the viscosity to 13 seconds (Food Cup No. 4), and apply air so that the coating amount is 110 to 120 g/cm ³ in terms of undiluted solution. One coat was applied by spray. (3) Application of primer After about 1 hour, the primer described in (2) above was applied according to (2) above. (4) Coating and taping of top coat paint The viscosity of the top coat paint in Formulation Example 2 was adjusted by adding xylene, and the applied amount was 140 to 150 in terms of actual liquid.
It was applied with a brush at a concentration of g/m ² , and after about 20 minutes, the glass tape used in Example 4 was wrapped at a wrap rate of 50%. (5) Applying the top coat Approximately 2 hours after completing step (4), add xylene to the top coat of Formulation Example 2, adjust the viscosity to 15 seconds (Food Cup No. 4), and apply the amount using air spray. It was coated and finished at a weight of 160 to 180 g/m ² (wet-on-wet) in terms of the stock solution. Comparative Example 7 Commercially available silicone resin-based heat-resistant silver paint (silicone-based heat-resistant paint that does not contain titanate)
Coated according to Example 7, except that was used instead of the top coat used in steps (4) and (5) of Example 7.
Finished with taping. Comparative Example 8 The silver paint used in Comparative Example 7 was not taped, but was finished by air spraying it alone three times. Next, the test results of Examples and Comparative Examples are shown in Tables 1 and 2. In the table, the surface temperature is measured using a surface thermometer (manufactured by Anritsu Keiki Co., Ltd. HD-
80). From the table, the superiority of the present invention is extremely clear, and it has been proven that the present invention is excellent in high temperature heat resistance, heat insulation, and corrosion resistance.

【table】

【table】

Claims (1)

[Scope of Claims] 1. A primer paint containing a titanate, a silicone resin binder, and a rust preventive agent is applied to the object to be coated, and a top coat containing a titanate and a silicone resin binder is applied thereon. A high-temperature heat-resistant, heat-insulating, and rust-preventing coating that is applied. 2. The coating according to claim 1, wherein the primer paint is applied two or more times. 3. The coating according to claim 1, wherein the top coat is applied two or more times. 4. Further blending one or more inorganic fillers selected from high-density fillers, high refractive index fillers, platy mineral fillers, and other ordinary fillers into the primer paint and/or top coat paint. The coating according to claim 1. 5. The coating according to claim 1, further comprising a colorant and/or an organic solvent added to the primer paint and/or top coat. 6. The coating according to claim 1, wherein in the primer paint, 25 to 2000 parts by weight of a silicone resin binder and 1 to 100 parts by weight of a rust inhibitor are used per 100 parts by weight of the titanate. 7. The coating according to claim 1, wherein 25 to 2000 parts by weight of a silicone resin binder is used per 100 parts by weight of titanate in the top coating. 8. The coating according to claim 4, wherein the inorganic filler is in the form of granules, micro hollow bodies, or expanded granules. 9 In primer paint, titanate 10-90
Parts by weight, 90 to 10 parts by weight of inorganic filler, 1 to 10 parts by weight of rust preventive agent
90 parts by weight and 25 to 25 parts by weight of silicone resin binder per 100 parts by weight of the total amount of titanate and inorganic filler.
Coating according to claim 4, in which 2000 parts by weight are used. 10 In the top coating, 10 to 90 parts by weight of titanate, 90 to 10 parts by weight of inorganic filler, and 25 to 2000 parts by weight of silicone resin binder per 100 parts by weight of the total amount of titanate and inorganic filler. The coating according to claim 4, wherein the coating uses: 11 Apply a primer coating containing a titanate, a silicone resin binder, and a rust preventive agent to the object to be coated, and cover the applied area with pressure bonding (taping) using a woven or nonwoven fabric, and apply the taping as described above. A high-temperature, heat-insulating, and rust-proof coating is obtained by applying a top coat of paint again afterwards. 12. The coating according to claim 11, wherein the primer paint is applied two or more times. 13. The coating according to claim 11, wherein the top coat is applied two or more times. 14 Further blending one or more inorganic fillers selected from high density fillers, high refractive index fillers, platy mineral fillers, and other ordinary fillers into the primer paint and/or top coat paint. The coating according to claim 11. 15. The coating according to claim 11, wherein a coloring agent and/or an organic solvent are further added to the primer paint and/or top coat. 16 In primer paint, titanate 100
12. The coating according to claim 11, wherein 25 to 2000 parts by weight of the silicone resin binder and 1 to 100 parts by weight of the rust inhibitor are used. 17. The coating according to claim 11, wherein in the top coating, 25 to 2000 parts by weight of a silicone resin binder is used per 100 parts by weight of titanate. 18. The coating according to claim 14, wherein the inorganic filler is in the form of granules, micro hollow bodies, or expanded granules. 19 In primer paint, titanate 10~
90 parts by weight, 90 to 10 parts by weight of inorganic filler, 1 part of rust preventive agent
~90 parts by weight and 25 parts by weight of silicone resin binder per 100 parts by weight of the total amount of titanate and inorganic filler.
15. A coating according to claim 14, wherein ~2000 parts by weight are used. 20 In the top coating, 10 to 90 parts by weight of titanate, 90 to 10 parts by weight of inorganic filler, and 25 to 2000 parts by weight of silicone resin binder per 100 parts by weight of the total amount of titanate and inorganic filler. 15. The coating according to claim 14, wherein the coating uses: 21 Apply a primer paint containing a titanate, a silicone resin binder, and a rust preventive agent to the object to be coated, and then apply a top coat containing a titanate and a silicone resin binder on top of the primer paint. A high-temperature heat-resistant, heat-insulating, and rust-proof coating that is obtained by crimp-coating (taping) the attached portion with a woven or non-woven fabric, and then applying a top coat again after the taping. 22. The coating according to claim 21, wherein the primer paint is applied two or more times. 23. The coating according to claim 21, wherein one or both of the top coatings are applied two or more times. 24 Further blending of one or more inorganic fillers selected from high-density fillers, high refractive index fillers, platy mineral fillers, and other ordinary fillers into the primer paint and/or top coat paint. The coating according to claim 21. 25. The coating according to claim 21, further comprising a coloring agent and/or an organic solvent added to the primer paint and/or top coat. 26 In primer paint, titanate 100
22. The coating according to claim 21, wherein 25 to 2000 parts by weight of the silicone resin binder and 1 to 100 parts by weight of the rust inhibitor are used. 27. The coating according to claim 21, wherein 25 to 2000 parts by weight of the silicone resin binder is used per 100 parts by weight of the titanate in the top coating. 28. The coating according to claim 24, wherein the inorganic filler is in the form of granules, micro hollow bodies, or foam granules. 29 In primer paint, titanate 10~
90 parts by weight, 90 to 10 parts by weight of inorganic filler, 1 part of rust preventive agent
~90 parts by weight and 25 parts by weight of silicone resin binder per 100 parts by weight of the total amount of titanate and inorganic filler.
25. A coating according to claim 24, wherein ~2000 parts by weight are used. 30 In the top coating, 10 to 90 parts by weight of titanate, 90 to 10 parts by weight of inorganic filler, and 25 to 2000 parts by weight of silicone resin binder per 100 parts by weight of the total amount of titanate and inorganic filler. 25. The coating according to claim 24, wherein the coating uses: