JPH0765199B2 - Filling color filling composition - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION [Field of Industrial Application] The present invention relates to an embedding color filling composition (hereinafter, simply referred to as a composition). More specifically, a tie plate (fastening device) that fixes a rail on a subway track such as a bullet train.
The present invention relates to a filling collar filling composition having a water blocking effect, which is injected into a receiving collar for rust prevention and corrosion prevention of T bolts and T bolt receivers for fixing to a slab.

[Prior Art] As a fastening device for fixing a rail on a slab track, a tie plate equipped with parts for holding a rail, and this type, as described in, for example, JP-A-54-113767. A configuration including an embedded collar for fixing the rate to the concrete slab, a T bolt, a T bolt receiver, etc. is generally used.

FIG. 1 is a schematic sectional view showing a portion of an embedded collar of the fastening device. The embedding collar (2) embedded in the slab has T bolts (3) and T bolt receivers (4).
It also functions as a container for housing. Above the embedding collar (2), a tie plate (6) is attached by an T-bolt (3) via an insulating collar (5).

Conventionally, the remaining space other than the T-bolt (3) and the T-bolt receiver (4) in the embedding collar (2) contains, for example, a phthalate ester synthetic oil as a main component, and a rust preventive agent,
Filled with liquid water-stopping oil (for example, density 1.08 or more) that has a higher density than water, with additives such as antioxidants added,
As a result, intrusion of rainwater and the like into the embedding collar (2) is eliminated by the density difference and the T bolt (3) and T bolt (3)
The bolt receiver (4) is protected against rust.

As a concrete example of the water-stopping oil, there are former Japanese national railway standards JRS.
64099-7A-13 BR2B, which is known, for example, as described in JP-A-54-113767 mentioned above, a water-stopping oil comprising a base oil such as a phthalate ester-based oil and an additive. Water-stopping oil can be used.

However, it has been experienced that the conventional water-stopping oil may cause the following problems when used in an actual machine.

That is, the first problem is that, since the conventional water-stopping oil is a low-viscosity liquid, a gap formed at the joint between the embedding collar and the bottom plate or a crack occurring in the embedding collar itself. It can be easily leaked from. As a result, the level of water-stopping oil filling in the implant collar is reduced, and water can accumulate in the upper portion of the collar, which can lead to corrosion of the bolt.

The second problem is that since the main component of the conventional water-stopping oil is phthalate ester, it easily breaks when it comes into contact with an insulating collar made of polycarbonate resin or the like attached to the head of the T-bolt. That is. As a result, not only may the insulation collar be cracked, the insulation effect may be reduced, and the signal current flowing through the rail may become irregular, and the T-bolt tightening strength may be reduced, and the rail may be fixed and retained. There is also the risk of uncertainty. Both of these are factors that impede safe train operation and, in some cases, may cause a major accident.

[Problems to be Solved by the Invention] The present invention has been made in view of the problems in the conventional water-stopping oil, and has a property of not invading the insulating collar or the embedded collar (hereinafter, referred to as resin resistance). ), The property that does not flow out from the gaps or cracks of the embedding collar (hereinafter referred to as non-flowing property), the property that it does not emulsify with rainwater that has entered, or does not store rainwater as a free liquid at the bottom of the embedding collar (below). , Water resistance), the property of preventing corrosion such as T-bolts (hereinafter referred to as anticorrosion property), and the property of being easily filled into the embedding collar (hereinafter referred to as workability).
It is an object of the present invention to provide a good water blocking filler in any of the above cases.

[Means for Solving the Problems] In order to overcome the above-mentioned two major drawbacks of the conventional water-stopping oil, the T-bolt is securely held in the embedded collar, and the T-bolt is completely anticorrosive and rustproof. It was found that a water-stopping filler that does not cause a problem even at low cost and has good workability is returned to the basics, the idea is changed, and as a result, the solution can be solved by the following means.

That is, the present invention relates to an embedding color filling composition containing a resin-resistant base oil, a thickener, a rust preventive, a water absorbing material and water.

In the composition of the present invention, as the water-absorbing material, base oil, thickener and additive, a material which does not damage the insulating collar or the embedding collar, for example, hydrophilic acrylic polymer, refined mineral oil, bentonite , Metal soap,
Used respectively.

Therefore, since the composition of the present invention uses a resin resistant material, particularly a resin resistant base oil, it has excellent resin resistance against insulating collars, embedded collars and the like.

Further, since the composition of the present invention fills the embedding collar together with water, it functions as a water-absorbing material and a thickening agent to swell to maintain a grease-like or jelly-like state instead of a liquid state. It has the property that it does not flow out through gaps or cracks. Therefore, it has a non-flowing property.

Further, even when water such as rainwater and submergence is infiltrated, the water is uniformly taken into the composition, and the non-flow property does not change.

Further, since the base oil and the swelling agent are blended, sufficient and long-term anticorrosion and rust preventive power can be maintained even in a state of taking in rainwater and water. Therefore, it has anticorrosive properties.

Further, the composition of the present invention becomes fluid when mixed with water, and can be easily filled into the embedding collar. Therefore, it has good workability.

[Examples] Specific examples of the water absorbent material used in the present invention include hydrophilic acrylic polymers (including acrylic acid-vinyl alcohol copolymers), cross-linked polyvinyl alcohol, cross-linked polyoxyethylene, starch-based water absorbent resin. , Cellulose-based water-absorbent resin, and the like. Among these, vinyl acrylate alcohol copolymers are preferable in that they have a remarkably high water absorption capacity and are stable, and that they are well compatible with base oils, thickeners and additives.

Specific examples of the resin-resistant base oil used in the present invention include resin-resistant refined mineral oils, synthetic oils, animal and vegetable oils and the like.
Of these, refined mineral oils and synthetic oils are preferable in that they do not attack the insulating collar and the like, are compatible with water-absorbing materials, thickeners, additives, and have good retention properties. The viscosity of the base oil is preferably about 10 to 150 mm ² / s at 40 ° C.

The thickener used in the present invention functions together with the water absorbing material to gel and thicken with water, and specific examples thereof include an inorganic thickener and an organic thickener. Among these, the inorganic thickeners are preferable in that they do not damage the insulating collar, do not reduce the water absorbing ability of the water absorbing material, are compatible with the water absorbing material base oil, the additive, and have good retention properties. .

The composition of the present invention contains a rust preventive, an antioxidant and the like as additives. The composition of the present invention may further contain a suspending agent, a surfactant and the like.

The preferred blending ratio in the composition of the present invention varies depending on the material used, but the water absorbing material: 1.0 to 20.0 parts by weight,
Base oil: 88.0 to 30.0 parts by weight, thickener: 10.0 to 40.0 parts by weight, additives such as rust preventives: 1.0 to 10.0 parts by weight, more preferable compounding ratio 5.0 to 7.0 parts by weight, base Oil: 54.0
~ 30.0 parts by weight, thickener: 27.0 to 33.0 parts by weight, and additives such as anticorrosives: 5.0 to 6.0 parts by weight.

If the amount is out of the above range, the water absorption capacity, workability, stability, and rust resistance of the product tend to be lowered (specifically, non-flowability, corrosion resistance, and workability are lowered).

Such a composition is in the form of a fluid to a soft grease in a state where it hardly absorbs water.

As shown in FIG. 1, the composition (1) of the present invention is filled with water in the implant collar (2). As described above, in FIG. 1, (3) is T bolt, (4)
Is a T-bolt receiver, (5) is an insulating collar, (6) is a tie plate, (7) is a washer, and (8) is a pad.

The composition (1) is filled with water in the embedding collar (2) and then absorbs water to swell in a grease-like or jelly-like state, so that the space in the embedding collar (2) is filled. The T-bolt (3) and the T-bolt receiver (4) are protected against corrosion while filling.

The method of filling the composition of the present invention into the implant collar includes, for example, composition: water is mixed with water so as to be about 1:10, and then the composition is injected into the implant collar, or A method is used in which water is injected up to the upper part of the embedding collar after injecting up to about 1/10 of the space volume in the embedding collar.

As described above, the composition of the present invention shows little increase in viscosity for a while after being diluted with, for example, about 10 times of water, and for example, becomes a grease-like or jelly-like state about 3 hours after the dilution. Also, if you put the composition in the embedding collar and then pour water to the top, it will be about 24
After time, the state becomes a grease or jelly.

Further, even if a cavity is formed in the embedding collar for some reason, the composition of the present invention further swells by absorbing rainwater or the like and fills the space, so that refilling is not necessary. . In this manner, the composition of the present invention has good workability and is easy to fill in the embedding collar, and after filling, it has excellent resin resistance, non-spillage property, water stoppage property, and corrosion resistance. To exert.

It was confirmed that these effects can be maintained up to a composition: water ratio of 1:20.

Example 1 10.0 parts by weight of acrylic acid-vinyl alcohol copolymer as a water absorbent material, 58.0 parts by weight of refined mineral oil having a viscosity of about 100 mm ² / s at 40 ° C. as a base oil, and bentonite 3 as a thickener.
A composition was obtained by mixing 0.0 parts by weight with 2.0 parts by weight of a metal salt of petroleum sulfonate as an additive for the purpose of preventing rust.

The obtained composition was poured into an embedding collar together with about 10 times the amount of water, and the resin resistance, water blocking resistance, corrosion resistance, workability, and non-flowing property were evaluated. The results are shown in Table 1.

The evaluations were carried out as follows.

Resin resistance As the extent to which the insulation collar is eroded, the former Japanese National Railways Standard
JRS 64099-8A-13 BR5B "Waterproof oil (prototype)" was evaluated by the solvent stress cracking test method. The evaluation was performed in the following two-stage evaluation.

◯: Pass (does not damage the insulating collar) X: Fail (does not damage the insulating color) Water stopping property The composition of the present invention absorbs water to stop water, whereas the conventional one removes water. Water stops, and the mechanism of water stop is completely different. Therefore, the water-stopping evaluation is as follows, in the case of Examples (water-stopping evaluation (1)),
In the case of the comparative example described below (water-stopping evaluation (2)), different methods were used.

Water-stopping evaluation (1) Transfer 10 ml of sample liquid to a cylinder with a stopper of 100 ml,
On top of that, 90 ml of tap water was poured and the bottle was stoppered, and after shaking vigorously 10 times, the water-stopping property was observed.

The criteria for water-stop evaluation (1) are as follows.

◯: Good (does not absorb water and expands in volume, and does not cause excess water to float) X: Poor (not good if water separates or precipitates) Water-stopping evaluation (2) Existence of 100 ml of 50 ml sample solution Take a cylinder with a stopper,
On top of that, 50 ml of tap water was poured and capped, and after vigorous shaking up and down 10 times, the water stopping property was observed.

The criteria for the waterproofness evaluation (2) are as follows.

○: Good (water always floats on the sample solution due to the difference in density) ×: Poor (not good if emulsification occurs or water does not separate) Corrosion resistance Zinc and steel according to JIS K 2246, 5.28 evaluated. The evaluation has the following two levels.

○: Good (passes the standard value of JRS 64099-8A-13 BR5B "water stop oil") X: Poor (Fails the standard value of JRS 64099-8A-13 BR5B "water stop oil") Workability at room temperature Then, it was visually confirmed whether or not it was sufficiently fluidized. The evaluation has the following two levels.

◯: Good (filling in the embedding collar is easy and can be done in a short time) ×: Poor (filling in the embedding collar is difficult and takes a long time, or does not flow well without heating) Non-flowing property It was visually confirmed whether or not a grease-like or jelly-like substance was formed with the passage of time after mixing with water. The evaluation has the following two levels.

◯: Good (does not flow out from the gaps of the embedding collar, etc.) X: Poor (flows out from the gaps of the embedding collar, etc.) Comparisons 1 to 4 For comparison, using refined mineral oil (Comparative Example 1) ),
In the case of the conventional water-stopping oil containing phthalic acid ester as the main component (Comparative Example 2), in the case of the improved version of the water-stopping oil (having a high viscosity containing bisphenol as the main component) (Comparative Example 3), and Water-stop grease (high-density synthetic oil hardened with thickener)
The above-mentioned evaluation was carried out for the case (Comparative Example 4). The results are shown in Table 1.

As is clear from Table 1, Example 1 according to the present invention
The composition of (1) shows excellent performance in resin resistance, water resistance, corrosion resistance, workability and non-spillage property.

On the other hand, Comparative Example 1 is a composition of refined mineral oil and has good resin resistance, but has insufficient performance in terms of non-effluxing property, waterproof property and corrosion resistance.

Comparative Examples 2-3 are synthetic oil-based compositions that are water-stoppable,
The anticorrosion property is good, but the resin resistance and the outflow property are insufficient.

Comparative Example 4 is a grease composition having good resin resistance, water resistance, corrosion resistance and non-flowing property, but has insufficient workability.

[Effects of the Invention] The composition of the present invention can obtain a desired filling state and fluidity only by adding water, and the filling operation is simple and easy. Also, by the action of water, water-absorbing material and thickener, it is filled into the embedding collar and then swells into a grease-like or jelly-like form with excellent non-spill property against cracks of the embedding collar. Play. In addition, since it uses a resin-resistant material, it does not attack the insulation collar, etc., and it is mixed with a water-absorbing material, so it is highly water-stopping against rainwater, etc. Various performances such as anti-corrosion property against T-bolt receiver can be obtained stably.
Furthermore, it is cost-effective to add a large amount of water,
Manufactured economically. That is, the present invention provides a composition that has excellent performance, is easy to handle, and is economical.

[Brief description of drawings]

FIG. 1 is a schematic sectional view showing a portion of an embedded collar of a rail fastening device for a slab track. (Symbols in the drawing) (1): Filling composition (2): Embedding collar (3): T bolt (4): T bolt receiver (5): Insulating collar (6): Tie plate (7): Washer (8): Pad

 ─────────────────────────────────────────────────── ─── Continuation of the front page (72) Inventor Kenzo Tokuoka 2-1-2, Takasu-cho, Nishinomiya-shi, Hyogo 28-309 (72) Inventor Tadashi Aono 2--5-5, Katayama-cho, Suita-shi, Osaka 5-402 West No. (56) Reference JP-A-56-155274 (JP, A) JP-A-57-196409 (JP, A) JP-A-57-196411 (JP, A)

Claims (3)

[Claims] 1. An embedding color filling composition comprising a resin resistant base oil, a thickener, a rust preventive, a water absorbing material and water. 2. Water-absorbent material 1.0 to 20.0 parts by weight, resin resistant base oil 88.0 to 30.0 parts by weight, and thickener 10.0 to 40.0 parts by weight,
The composition of claim 1 comprising 1.0 to 10.0 parts by weight of a rust inhibitor and water in an amount sufficient to make the composition a grease or jelly. 3. A method for producing an embedding color filling composition, which comprises mixing a resin-resistant base oil, a thickener, a rust preventive and a water absorbing material and then adding water.