JPS6048230B2 - Coating method with self-adhesive elastic layer - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION The present invention relates to a method of applying a coating with a self-adhesive elastic layer.

For more details, see how to apply coatings that provide long-term protection, improve waterproofing and chemical resistance, and provide impact resistance and cushioning properties for metal surfaces such as iron, stainless steel, and aluminum, as well as inorganic structural material surfaces such as concrete, mortar, and slate. Regarding. Conventionally, various paints have been used to prevent corrosion of iron and aluminum.

However, the film thickness of the paint film is at most 20 to 10
In order to make the 0μ thinner and obtain long-term corrosion resistance, it was necessary to apply the paint several times. Also 500~1000μ
It is not easy to obtain a film thickness of 100%, and it has been difficult to expect long-term corrosion resistance for structures and plants located in the sea, ocean, beaches, or industrial areas, which are particularly corrosive. In particular, the film thickness tends to be thinner at angles, edges of cut points, burrs at welds, and the inside of joints, and estrus was observed early. In order to improve this problem, a method of using adhesive tape with adhesive applied on one side of plastic tape has been proposed, but it has the disadvantage that the overlapping parts of the tape do not integrate and create gaps, resulting in the overlapping of the tapes. There were disadvantages such as creating a step difference due to the difference in thickness between the tape and the non-covering area, and the tape easily peeling off from the end and periphery.

Furthermore, a resin mortar finish is used to add acid resistance to iron or concrete floors and to prevent slipping when walking or running, by mixing epoxy resin with silica sand, etc., and applying it to a thick film and curing it.

However, with this method, if a large area is constructed at once,
Since the resin mortar has a large curing shrinkage, it tends to crack in various places and peel off easily, and the purpose of acid resistance and non-slip properties cannot be achieved. Therefore, in order to improve this, the joints are cut in advance, lined with resin mortar, and then the joints are filled in with caulking agent or the like.
However, in this case, cracks may occur on the resin mortar lining construction surface due to poor chemical resistance of the joints, differences in thermal expansion coefficients between the steel plate or concrete and resin mortar, deflection of the steel plate, and cracking of the concrete over time. is likely to occur,
Moreover, its durability was often shortened due to peeling, penetration of chemicals, moisture, etc. Furthermore, in concrete and mortar construction structures, hair cracks due to curing shrinkage of the base material, etc. Due to the occurrence of cracks due to structural stress and strain, the surface coating material was unable to withstand it, and hair cracks and fissures were occasionally observed to occur together with the base material.

Therefore, concrete waterproofing construction methods that do not cause cracks have been developed by applying soft urethane with a special high elongation rate or adhering plastic or rubber sheets. but,
The coating method has a thin film and is fluid, so
It is difficult to apply a uniformly thick film on concrete surfaces that flow easily and are highly uneven, and in the sheet waterproofing method, there may be problems such as poor adhesion or complete failure due to the adhesion of the three sheets or the lamination or overlapping surfaces of the sheets. There were drawbacks such as difficulty in obtaining a blocking effect. Furthermore, even with resin linings that come into contact with highly concentrated acids, alkalis, and salts, such as iron or aluminum tanks, concrete water tanks, and drainage ditches, thermal shock occurs due to the difference in thermal expansion and contraction between the metal and the lining layer. Also, defects such as cracking or peeling of the lining layer due to external stress strain on the metal surface or cracking or peeling of the lining layer due to cracks in the base material on the concrete surface occurred.

The present invention aims to improve the drawbacks of the prior art as described above.

In other words, it has a thick and uniform film thickness not only on horizontal substrates, but also on vertical surfaces and ceiling surfaces, and has good impact resistance.
Self-adhesive, with excellent elasticity, adhesion, acid resistance, alkali resistance, hardness, scratch strength, elongation, resilience, distortion resistance, etc.
The present invention aims to provide a coating construction method having an elastic layer. The present invention provides (a) partially vulcanized rubber 10 on the surface of the base material.
~5% heel weight, 10~5% tackifier and 5% filler
A self-adhesive property characterized by compressing a self-adhesive tape with a thickness of 0.3 to 3 TWL and having a volume of ~7%, and then (b) applying at least one of FRP lining, flake lining, and resin mortar lining. , relates to a coating construction method having an elastic layer.

In the construction method of the present invention, the rubber used for the first layer of self-adhesive tape includes natural rubber, styrene-butadiene rubber, nitrile rubber, polyisoprene rubber, polybutadiene, epichlorohydrin rubber, chlorosulfonated polyethylene, butyl rubber, Examples include ethylene-propylene rubber, ethylene-propylene-diene rubber, and urethane rubber.

Particularly preferred are butyl rubber, epichlorohydrin rubber, ethylene-propylene rubber, hypalon, etc. from the viewpoint of heat resistance, bending resistance, steam resistance, tear resistance, gas permeability resistance, ozone resistance, and the like. Unvulcanized raw rubber is treated with vulcanizing agents such as sulfur, organic sulfur compounds, organic peroxides, metal oxides, polyamines, and polyisocyanates, and as necessary, aldehyde-amine reaction products, dithiocarbamates, and guanidines. Vulcanization is carried out by a conventional method using a vulcanization accelerator such as thiurams or the like to obtain a partially vulcanized rubber. In the present invention, if the rubber is unvulcanized, its plastic flow will be highly dependent on temperature, its elasticity and tensile strength will be low, it will quickly become brittle due to oxidation, and it will have poor durability.

On the other hand, excessive vulcanization becomes hard and reduces elasticity and elongation, making it unsuitable and therefore requiring only partial vulcanization.

The optimal vulcanization range varies depending on the type of rubber used, but vulcanization that shows the maximum elongation is more suitable than the maximum tensile strength. is preferably 0.5 to 8k9/C7l. In addition, it is recommended to add anti-aging agents such as amines, amine-aldehyde reactants, amine-ketone b reactants, and phenols, which have the effect of minimizing changes due to oxygen, ozone, light, heat, and deterioration due to fatigue. desirable. The partially vulcanized rubber contained in the self-adhesive tape according to the invention is 10 to 5% by heel weight, preferably 15% by weight, based on the total formulation of the tape.
~45% by weight is used.

If the amount of partially vulcanized rubber is less than this range 1, the tape may be cut due to insufficient elongation or elasticity may be insufficient, making it impossible to achieve the objectives of the present invention. On the other hand, if there is too much
Adhesion to the base material and pressure-sensitive self-adhesion between tapes decrease. Further, as the tackifier used in the self-adhesive tape of the present invention, polybutene resin, terpene resin, polyisobutylene resin, esterified rosin, xylene resin, hydrogenated petroleum resin, etc. are used.

Furthermore, tar, mineral oil, etc. can also be used in combination. The tackifier is an essential component for providing pressure-sensitive adhesives to the seams and overlaps of tapes, creating a single unit with no gaps, and providing self-adhesive properties that prevent the tapes from peeling off over time. . In addition, this component allows the adhesive to firmly adhere to the base material to be applied, such as steel or concrete, by applying pressure using a hand roll or the like, without the need for applying a special adhesive in advance. The amount of said tackifier in the total formulation of the self-adhesive tape ranges from 10% to 15% by weight, preferably 15% by weight.
~45% by weight. If the amount used is less than the above range, the tape will lose its self-pressure-sensitive adhesive strength and will not have sufficient adhesion to the substrate to which it is applied. If the amount used is too much above the above range, plastic flow may occur at high temperatures, causing deformation and flow during storage of the tape, changes in film thickness after application, and rubbing or wrinkles in the upper layer. This is not preferable as it may cause In the present invention, the self-adhesive tape further includes a filler.

As the filler, carbon black, fine powder silica,
Calcium silicate, clay, calcium carbonate, magnesium carbonate, barium sulfate, talc, kaolin, etc. are used. If necessary, titanium white, titanium yellow, phthalocyanine blue, phthalocyanine green, quinacridone red. Various inorganic and organic general coloring pigments such as zinc chromate, strontium chromate, red lead, calcium lead oxide, and other anticorrosion pigments for iron and aluminum can be added. Seasonal weight%, preferably 10
〜marked weight%. If the filler content is less than the above range, the tape is likely to undergo plastic flow at high temperatures, while if it is more than the above range, physical properties such as elongation and elasticity will decrease, as well as pressure-sensitive self-adhesion and adhesive strength to the substrate. I don't like it. A self-adhesive tape made of the various components described above is manufactured by masticating it with a roll or a Panbury mixer, applying it to a hot roll, adjusting it to a uniform thickness with a calender or extruder, and then applying it to a release paper. It is then rolled up and stored.

The film thickness of the tape is 0.3 WUTL to 3771771 mm. Usually, a value between 0.5 and 1.57 T11 ft is practical. Incidentally, when producing a self-adhesive tape, it is also possible to use inorganic or organic fibers as a reinforcing material on both sides or one side of the tape, or inside the tape.

Examples of cloth or non-woven fabrics include glass cloth, chopped strand mat, surf ace mat,
Vinylon, polypropylene cloth, carbon fiber cloth, and composite reinforcing nonwoven fabrics of mat or synthetic resin (for example, Nisseki Warif manufactured by Nippon Petrochemicals Co., Ltd.) can be used alone or in combination. In the present invention, the width and length of the tape can be freely modified to facilitate handling and to suit the area of the substrate to be treated.

The "FRP lining" used in the present invention refers to reinforced plastic lining obtained by coating and impregnating various synthetic resins on inorganic or organic fiber cloth or nonwoven fabric.

Examples of the inorganic or organic fiber cloth or nonwoven fabric include glass cloth, chopped splint mat, surfacing mat, vinylon or polypropylene cloth, carbon fiber cloth and mat, or composite reinforcing nonwoven fabric of synthetic resin. For example, Nippon Petrochemical (product name: Nisseki Warif, etc.) is used.

Among these, glass cloth and glass chopped strand mat are representative and preferable from the viewpoint of physical properties and economical efficiency. Combinations of the various material fibers and combinations of cloth and mat can be freely adopted depending on the purpose.

In the present invention, the resin to be coated and impregnated on the inorganic or organic fiber cloth or nonwoven fabric is commonly commercially available, such as amine or polyamide curable epoxy resin, polyol-polyisocyanate resin, unsaturated polyester resin, vinyl ester resin, furan resin, etc. The one listed will be used. These resins cure at room temperature, are easy to apply, are well impregnated, have no or almost no volatile components such as solvents, are easy to obtain thick cured films, and are easily coated with cloth or matte. It is necessary for the curing film to have a small amount of wrinkles and to have high hardness, so that it becomes a reinforcing layer that can withstand external pressure and impact. For this reason, polyol-polyisocyanate resins, unsaturated polyesters, and vinyl ester resins have low viscosity at room temperature and have good impregnating and workability.
Adding an appropriate curing catalyst will cure quickly and shorten the construction period.
Furthermore, vinyl ester resins, epoxy resins, isophthalic acid-based unsaturated polyester resins, and bisphenol-based unsaturated polyester resins are particularly suitable as they have excellent properties such as acid resistance, alkali resistance, water resistance, moisture resistance, and ozone resistance. . The term "flake lining" used in the present invention refers to lining obtained from a compound obtained by kneading glass flakes, graphite flakes, mica flakes, etc. with various synthetic resins.

As the synthetic resin, commercially available resins used in the FRP lining, such as epoxy resins, unsaturated polyester resins, urethane resins, furan resins, and vinyl ester resins, are preferably used.

Furthermore, "resin mortar lining" as used in the present invention refers to a resin mortar lining obtained by mixing silica sand or the like with, for example, epoxy resin, unsaturated polyester 3-ter resin, urethane resin, furan resin, vinyl ester resin, etc. say.

Next, the construction invention according to the present invention will be explained in detail.

``First, a self-adhesive tape (rolled using release paper) consisting of a partially vulcanized comb, tackifier, and filler is applied to the base metal or concrete surface.Self-adhesive By pressing the tape onto the release paper with a roller, it easily and reliably adheres to the base material with a uniform thickness.Then, the release paper is peeled off.The spliced part of the tape is attached to the end of the tape. When the tapes are placed adjacent to each other with no gap between them, a release paper is placed over the seam, and the tape is pressed down with a roll, etc., the seams become joined and integrated due to the tape's elastic deformation and self-adhesive properties.

In this way, unlike ordinary plastic tapes or rubber sheets, there is no need for special adhesives or heat welding, and there is no need to use special adhesives or heat welding, and there is no need for poor adhesion on the bonding surfaces, which can reduce the water permeability prevention effect or prevent membrane formation on the bonding surfaces. A smooth, completely impermeable layer with no non-uniformity in thickness is obtained. Another embodiment of the tape splicing method according to the present invention is a method in which a self-adhesive tape is first pressure-bonded, and then the next tape is partially overlapped and pressure-bonded on the layer from which the release paper has been removed.

A completely integrated impermeable layer can also be constructed by this method. Note that even if a paint has been applied to the base material in advance, as long as it is firmly adhered to the base material, there is no problem even if the tape is applied thereon.

Next, 1 FRP lining, 2 flake lining, and 3 resin mortar lining are applied on the adhesive tape.

For example, in the case of the FRP lining, an inorganic or organic fiber cloth or mat is pasted on the tape application surface. This is done by placing a cloth or mat on top of the tape and pressing it with a roll. In this case, since the surface of the tape is highly adhesive, there is no need to apply any particular adhesive, and the contact surface between the cloth or mat and the tape will be in a state where the cloth or mat has somewhat penetrated into the tape. In addition, the cloth or mat acts as an adhesive barrier layer for the tape, and there is no difficulty in work such as roll crimping. Next, a resin is applied and impregnated onto the cloth or mat that stands out on the tape.

For example, an unsaturated polyester resin or the like is spread or sprayed, and a defoaming roll is used to impregnate the fibers and remove air bubbles contained in the film. Also, in the same manner as above, glass flakes,
Flake lining can also be performed using graphite flakes, mica flakes, etc. Furthermore, the above-mentioned resin mortar can also be applied to the self-adhesive tape h using a trowel or the like.

In the present invention, "applying at least one of FRP lining, flake lining, and resin mortar lining" means (1) applying one or more layers of FRP lining on the self-adhesive tape, (2) applying flake lining. Applying one or more layers of lining, (3) Applying one or more layers of resin mortar lining, (4
) Applying flake lining and/or resin mortar lining on FRP lining, (5) Applying FRP lining and/or resin mortar lining on flake lining, etc.

Particularly in the present invention, it is most preferable to provide FRP lining on the self-adhesive tape. In this way, a reinforced plastic layer with strong tensile strength, tensile strength, and compressive strength is formed, and when combined with the adhesive tape layer, the disadvantages of reinforced plastics such as peeling due to poor adhesion to the base material, thermal shock, distortion, and Creep resistance prevents deterioration in strength due to cracks and fatigue, and impact resistance is significantly improved. In addition, properties such as cushioning properties and earthquake resistance can be obtained. Furthermore, on the coating layer obtained by the construction method of the present invention, a normal room temperature drying oil-based or synthetic resin paint may be applied to color or protect the surface, or zircon sand or alumina of appropriate particle size may be applied. It is also possible to provide an anti-slip effect by scattering bauxite particles, or to provide waterproofness by attaching urethane elastomer or the like.

The coating layer of the present invention obtained as described above has impact resistance,
It has excellent elasticity, adhesiveness, acid resistance, alkali resistance, hardness, scratch strength, elongation, restorability, distortion resistance, etc.

Next, FIG. 1 shows an outline of a cross section of a laminated coating film having a self-adhesive and elastic layer constructed by the construction method of the present invention.

In FIG. 1, reference numeral 1 denotes a base material, such as a metal such as mild steel, stainless steel, aluminum, or copper, or an inorganic structural material such as concrete, mortar, or slate.

2 is a self-adhesive tape.

In other words, it is a tape layer made of a partially vulcanized comb mixed with a tackifier and a filler, which has self-adhesive properties and has excellent elasticity and elongation. 3 is a cured film obtained by pressing a fiber cloth or mat onto 2 and coating and impregnating it with a room-temperature curable resin.

4 is a normal paint or lining layer (FRP flakes or resin mortar lining layer).

Fields to which the construction method of the present invention can be applied include chemical-resistant linings for chemical and petroleum plants, storage tanks, water treatment, waste gas disposal equipment, etc.; long-term corrosion protection for marine and port facilities; and peeling and cracking in steel and concrete. No acid-resistant floor finishes; pedestrian bridges;
Anti-slip pavement for flight decks, etc.; concrete pools;
For a wide range of applications, such as crack-proof, leak-proof and waterproof finishing for wastewater storage tanks, building structures, etc.; on-site anti-corrosion work for joints of lining steel pipes; anti-corrosion wrapping work for wire lobes such as main cables and hanger cables for long bridges, etc. A wide range of applications is possible. Therefore, it goes without saying that the present invention is not limited to the examples listed above, and can equally be used in other applications that can be easily conceived by those skilled in the art. The present invention will be illustrated below with detailed examples.

"Parts" and "%" described in Examples are shown as "parts by weight" and "% by weight," respectively. Example 1 A self-adhesive and elastic tape consisting of a partially vulcanized comb, a tackifier, and a filler was uniformly dispersed in a kneader according to the formulation shown in Table 1, and then made into a tape having a width of 10 mm and a width of 10 mm by an extruder.
It was extruded to a thickness of 1 mm, placed on release paper, rolled up, and cut into appropriate widths.

Each tape having the composition shown in Table 1 has a width of 10077Z77.
1. Length: 300 Twt) It was pasted over the entire surface on one side of a slate board with a thickness of 5 m and 77 mm, and after pressing the top of the release paper with a roller 2 to 3 times, the release paper was peeled off. The surface of the resulting tape was very sticky. Layer two pieces of glass chopped strand mat on top of the tape, press it down 3 to 4 times with a roller, and then press the tape so that the chopped strand mat is completely impregnated with the bisphenol-based unsaturated polyester resin to which a hardening agent has been added. It was spread on the surface with a roll brush, air bubbles were removed with a defoaming roll, and the mixture was cured at room temperature. All cured in 2 to 3 hours, and the surface of the laminated cured layer was hard and non-tacky.

On top of this hardened layer, apply an epoxy resin white paint [Shell Chemical Co., Ltd.
2. A paint made by adding polyamide resin as a curing agent to the main ingredient, which is made by mixing Kiwa's product name Epicoat 1001 with a white pigment.
It was coated several times and cured at room temperature before being subjected to a comparative test. *'(
Test piece A) On the other hand, a test piece (test piece B) obtained in the same manner except that the first application of the self-adhesive elastic tape was omitted, and a glass chopped mat was used instead of the self-adhesive elastic tape.
A test piece with increased layers (test piece C), a test piece coated with only epoxy resin paint (test piece D), tape of the present invention No.
A test piece to which only samples 1 to 5 were pasted (test piece E) and a slate board base material to which no coating was applied (test piece F) were added for comparison.

The test results are shown in Table 2. Although there were five types of tapes, all of them gave similar results. From the test results in Table 2, it is clear that this laminated coating film is strong and has excellent adhesion, elasticity, impact resistance, waterproofing, and chemical resistance, and has a remarkable physical and chemical protective effect on the base material. I understand that. L-------------[(Note) Test method (C) Adhesive, non-stick by pressing your finger against the surface (2) Pencil hardness test, based on the test.

(3) Using a scratch tester (load 100V).

Determine. Example 21 Depending on each composition listed in Table 1 above, the thickness Iwr! n and 2TWL tapes were made respectively, width 100-, length 500Trrm) thickness 57
A 7rm slate board was pasted vertically, a layer of glass roping cloth was pasted on top of it, it was crimped with a roller, and a hardening agent was added. The obtained isophthalic acid-based unsaturated polyester resin was applied with a roll brush, and impregnated and defoamed using a defoaming roll.

This laminated coating film is about 1. It hardened over time. An acrylic/urethane resin paint was applied twice on the cured layer, cured at room temperature, and used for testing. On the other hand, as a comparative example, polyester
The diamine glycol curing type urethane elastomer [Dainippon Ink & Chemicals Co., Ltd. (Kiki-made product name: Pandex) was applied as thickly as possible to the vertically erected slate board using a brush, roll brush, trowel, etc. in the same manner as above. It is easy to sag, and the film thickness on the slate surface is relatively thin, about 30 microns at the top, 50 to 60 microns in the middle, and 100 to 200 microns at the bottom, and the film thickness is uneven, so it is difficult to attach glass roping cloth. In this case, the construction was extremely difficult as the roping cloth slipped down, and after impregnation with resin, the mesh of the roping cloth was poorly filled with resin and the cross stitches stood out significantly.

Example 1 A test piece obtained by applying epoxy resin paint
A performance test similar to that of Example 1 was conducted, and the applied coating according to the present invention exhibited extremely excellent performance equivalent to that of Example 1.
However, the laminated film of the comparative example lacked elasticity and mechanical strength and exhibited performance similar to that of Comparative Example D in Table 2 of Example 1. This example makes clear the advantages of the construction of forming a uniform elastic layer according to the present invention.

Example 3 Joint cutting part of concrete U-shaped drainage ditch (joint spacing 3
~6=), the NO. listed in Table 1 above. ．． 4 composition, thickness 0.8, width 100T! Crimp Rlft tape, crimp 2 vinylon cloths on top of it, apply liquid epoxy resin [Shell Chemical (product name: Ebicoat 828 made by Kiki)] containing triethylamine as a hardening agent, impregnate defoaming roll, defoaming. After curing for 24 hours, one coat of the epoxy resin paint described in Example 1 was applied and allowed to dry for 10 days.

Further, the same construction as described above was carried out on a part of the concrete water tank where a crack had formed with a width of 0.5 to 1 m77 t.
The thus obtained laminated coating at joints and cracks in the concrete remained completely sealed without cracking. Use self-adhesive elastic tape. Use liquid epoxy resin mixed with a hardening agent and vinylon cloth. Laminate 3 to 5 layers of vinylon cloth, and paint joints and concrete cracks with epoxy resin paint after construction. After 3 to 10 days, 0.1
One to three elongated cracks of ~0.2 wL occurred, and it was clearly recognized from the outside that the waterproof seal was incomplete.

Also, although epoxy resin paint was applied six times, cracks in the joints and concrete could not be prevented.
Example 4 A continuous winding tape was prepared by sandwiching a release paper (thickness: 1 wrm) with a width of 75 cm, consisting of 25 parts of partially vulcanized butyl rubber, 2 parts of terpene resin, 2 parts of Fujinku chromate, 3 parts of carunium carbonate, and 5 parts of finely divided silica. Create this with a width of 75Tr
Un) Length 30 () Mm) Thickness 1.6TfU! After pressing on a sandblasted mild steel plate and making the release paper peelable,
Two pieces of glass-edge hopped strand mats were crimped together.

Then, after impregnating and curing a vinyl ester resin containing methyl ethyl ketone peroxide as a hardening agent, a glass surfaging mat was impregnated and laminated with the same resin.
A test piece was prepared by curing at room temperature. (Test piece G) On the other hand, for comparison, two layers of glass chopped strand matte and a layer of surfacing matte were laminated with the same resin as above on a sandblasted mild steel plate of the same size and cured at room temperature. Test piece H) was created.

In addition, a laminated test piece (test piece I) was prepared by stacking four glass chopped strand mats of the above test piece H, and each was subjected to the test. The test results are shown in Table 3.

Example 5 Two sandblasted mild steel plates with a width of 257Trm) and a thickness of 1.6TWL with a width of 25TrWL were put together to form a set, and the test specimen C. H. Test specimens G, , H, , l were prepared in the same manner as I, and after curing for 7 days, they were tested using a tensile tester [Toyo Sokki (Kiki Tensilon UTM-1/
5000 type] with a load cell of 500 kg and a tensile speed of 1
．． The elongation rate was measured at 5Wr1Tt/min and a measurement temperature of 25°C.

The measurement results are shown in Table 4.

(1) Using a tensile tester, the material was pulled at a value less than the elongation rate, and when the tension was reduced to zero, the restorability of the spacing between the base mild steel plates was investigated.

Example 6 Test piece of Example 4 G) H,
, I. The same construction was carried out as for test specimens G2 and H.

,I. After curing for 7 days, the strain required to cause cracks in the laminated film was measured using a bending strength measuring method using a tensile tester. The measurement conditions were a span distance IOC) TWI) load cell 500k9, and a bending speed of 1.5 Twt/min, and the measurement results are shown in Table 5. Example 7 A hardened film was prepared by laminating the 1TfU-FL tape described in Example 4 and two layers of glass chopped strand mat using vinyl ester resin on a sandblasted mild steel plate with a thickness of 1.6 wuft. Crow flakes [Asahi fiberglass (+ made of wood) Product name: Glassron flakes GF-C
8] Methyl ethyl ketone peroxide was mixed as a hardening agent into a flake compound prepared by mixing three types of resin and vinyl ester resin, and the mixture was coated twice with a trowel to a thickness of 1 wrm to form a flake compound layer with a total thickness of 2 TWL.

(Test piece J) As a comparison, a sandblasted mild steel plate was primed with vinyl ester resin, and then the same frame as above was used.
A test piece (test piece K) in which the compound was laminated twice (test piece K) and a test piece in which the compound was laminated three times (test piece L) were prepared. *The same tests as in Examples 4, 5, and 6 were conducted on these test pieces.

The test results are shown in Table 6. (Note) l) DuPont type impact test, test (diameter l/4〃, other than that, the same test method as in the above table was followed. YrfUn)
Length: 300 m (77 I) Using transparent glass plates with a thickness of 2-2, the tapes were crimped adjacent to each other, and the adjacent surface of the tape was pressed down using a roller over the release paper to perform lamination construction in the same manner as for test specimen A.
The presence or absence of gaps between the tapes was examined using a magnifying glass from the opposite side of the glass (the non-laminated side).

Even if the adjacent tapes are initially separated by about 1TrrjTL, the elastic strain and self-adhesiveness of the adjacent tapes will be affected by the roll crimping with a release paper placed on the adjacent surface or the roll crimping during chop and cross application. It is completely integrated with no gaps, no air bubbles, and no boundaries (eye 500y, height 40m). (It was observed that it had become a film of

Further, no abnormality was observed when 1 to 10 TjUrL of tapes were overlapped and pressed together.

Example 9 Table 1 No. of Example 1 above. The self-adhesive elastic tape having the composition No. 3 was laminated according to the construction procedure of Example No. 4.

However, as the resin for impregnating and laminating the glass chopped strand mat, an acid-curing furan resin (trade name: Hitafuran 302, manufactured by Hitachi Chemical Co., Ltd.) was used. The result is the 7th
Shown in the table. Test piece M in Table 7 is of the present invention, and test pieces N and O are self-adhesive and do not use elastic tape in the construction. ± Example 10 Thickness 1.5 with composition of partially vulcanized butyl rubber 30, longiester 15 parts, talc 508 ml, coroiglu silica 5 parts
TW1, width 150T$L self-adhesive elastic tape was made.
Tape is crimped adjacent to the entire surface of a slate board with a width of 300 mm, length of 1000 WL, and a thickness of 5 mm, and then a piece of glass chopped strand mat is crimped, and a bisphenol-based unsaturated material with a hardening agent added thereto. Impregnated with polyester resin and cured.

Furthermore, a resin mortar compound made by mixing 100 parts of liquid epoxy resin with 15 parts of a mixture of polyamide resin and triethylenetetramine as curing agents and 85 parts of coarsely crushed silica sand was added at 5 Tfr! I coated it with a TL thickness and cured it. This laminated coating film had an anti-slip effect when walking or driving a car, and was elastic when walking, and did not cause cracks on the resin mortar surface even when stress was applied to the slate board. Also, no cracks occurred in impact tests (front and back impact) with a diameter of 1/4", a load of 1 kg, and a height of 50 cm.On the other hand, the laminated coating layer, which is self-adhesive and does not require the attachment of elastic tape, has no anti-slip effect. Although it was the same, it felt very hard when walking in the warehouse, cracks appeared when stress was applied to the slate board, and the covering resin mortar peeled off due to repeated stress.

In addition, in the impact test under the same conditions as described above, the impact part cracked together with the slate base material. Example 11 Assembling process NO. in Table 1. A self-adhesive elastic tape consisting of No. 5 was attached to a single-sided sandblast board, and a glass flake compound [trade name: Resi Lining FC-30, manufactured by Dainippon Toyo Co., Ltd.] was applied with a trowel on top of the tape, and then a defoaming roll was used to apply Degassed and smoothed to a film thickness of 2T! Finished in Rm.

It was then cured at room temperature.

(Test piece P) A test piece lined with glass flake compound 2TrUT1 without attaching self-adhesive elastic tape (test piece Q), and a test piece similarly lined with glass flake compound 3rf0n (test piece R) was created.

The results of measuring the impact resistance, elongation rate, and bending strain of these test pieces are shown in Table 8. As described above, the material produced by the method of the present invention had excellent impact resistance, elongation rate, and bending strain.

Example 12 After applying a self-adhesive elastic tape in the same manner as in Example 11, vinyl ester resin 10 was added with a curing agent and an accelerator.
First, a resin mortar compound mixed with 10 parts of silica powder and 30 parts of coarsely crushed silica sand was applied to a thickness of 3Tf0! After lining it so that it had a diameter of 1, it was cured at room temperature.

(Test piece S) Separately, a test piece was obtained which was lined with only a resin mortar compound to a thickness of 3TWL. (Test piece T
) As is clear from the above table, the products obtained by the method of the present invention had excellent performance.

[Brief explanation of drawings]

FIG. 1 is a sectional view of an example of a coating layer obtained by the construction method of the present invention. 1 is a base material, 2 is a self-adhesive tape layer, 3 is an FRP lining layer, and 4 is a layer such as ordinary paint, flake lining, resin mortar lining, etc.

Claims (1)

[Scope of Claims] 1. On the surface of the base material, (a) 10 to 50% by weight of partially vulcanized rubber, 10 to 50% by weight of tackifier, and 5 to 70% of filler.
A self-adhesive elastic layer is formed by pressing a self-adhesive tape with a thickness of 0.3 to 3 mm consisting of % by weight, and then (b) applying at least one of FRP lining, flake lining, and resin mortar lining. Covering construction method. 2. The coating construction method having a self-adhesive elastic layer according to claim 1, wherein in step (b), FRP lining is applied and then flake lining is applied. 3. The coating construction method having a self-adhesive elastic layer according to claim 1, characterized in that in step (b), FRP lining is applied and then resin mortar lining is applied. 4. The patent claim that the FRP lining is a lining obtained from an inorganic or organic fiber cloth or nonwoven fabric and at least one of a room temperature-curable epoxy resin, an unsaturated polyester resin, a urethane resin, a vinyl ester resin, and a furan resin. A coating construction method having a self-adhesive elastic layer according to item 1, item 2, or item 3. 5. The flake lining is a lining obtained from glass flakes, graphite flakes, mica flakes and at least one of room temperature curable epoxy resin, unsaturated polyester resin, urethane resin, vinyl ester resin, and furan resin. A coating construction method having a self-adhesive elastic layer according to scope 1 or 2.