JPS59159337A - Cutoff material having temporary water-interrupting property - Google Patents

Abstract

(57) [Summary] This bulletin contains application data before electronic filing, so abstract data is not recorded.

Description

DETAILED DESCRIPTION OF THE INVENTION The present invention relates to a water-stopping material having a temporary water-blocking property, and more particularly, to a water-stopping material having a temporary water-blocking property. The present invention relates to a water-stopping material comprising coating 1 with a synthetic resin coating.

1-- 1F-4 Water, () is used to fill cracks in cracks in civil engineering and construction work. It is used.

Traditionally, such municipal water materials have been made of easily deformable water-resistant substances such as rubber, plastic, and bitumen.
7 materials have been used, but after long-term use, these materials suffer from a decrease in rebound resilience or the IJ-popping phenomenon, which makes them unable to respond to changes in the gap, resulting in insufficient water-stopping effects. There is a drawback.

[7 Therefore, to improve such drawbacks, water-swellable substances such as superabsorbent resins, diene rubbers,
Vulcanizing agent, vulcanization accelerator, filler, anti-aging 11. Resin compositions that swell upon contact with water have been developed, and these water-swellable compositions and non-swellable compositions, such as diene rubbers, vulcanizing agents, vulcanization accelerators, and fillers, have been developed. It has been reported that water-stopping is achieved by combining a composition comprising an anti-aging agent, etc.
3-ke and 0”P!; Kaisho 57-135160 Ginkai).

Municipal water materials swell when they come in contact with water, and the high swelling pressure causes water leakage (
In order to effectively stop water by filling the gap between −7 and 7,
Extremely desirable (-2
However, before using it, for example, during transportation, storage, or during application, it should be checked that it swells (2) due to water absorption and swelling due to humidity and condensation.
Or, due to carelessness during use, the 1-12 swells even when it comes into contact with a small amount of water, making it difficult to remove it.There are drawbacks such as stiffness and the 1-12 falling off later. In particular, contact with fresh concrete (when using wood and levers at joints in concrete structures) is unavoidable, and the moisture in the concrete will cause it to swell. , Conc IJ-1 - Regarding city water after curing, there is a drawback that the child's functions are not retained. .

In order to improve these drawbacks, we have developed synthetic materials, and also]
: Formed from synthetic resin emulsion 2〉; t Also, a crush-retaining layer (based on knee'-+- which exhibits low strength in the lateral direction = 11, L-1 =) is temporarily applied. 44. Control the flow of water to the area 2) Use the coating material Sashino. q plan Fi...
C Saho, Unexamined Japanese Patent Publication Showa Fi3 To-1 (19557 Publishing) 1,
7 However, in C1's IS plan (・(-, J,
, -jnnarii L f;lj') Also, it is a small profit in terms of cost I. 8.Which drawbacks does it have?Based on +C1・r
t, = t, cover the protective layer with / t, can be applied to various shapes (there is also a drawback of 3, Mizumoto i1.t
-, 1 consideration overcomes the drawbacks of C, it takes about 2 F to produce, and is manufactured at low cost.
,jp, 7 has been merged and possessed jl-Water A4 fee We are conducting intensive research to provide *, Iir'i fruit, water stop 44 base 1
1-, L: t- water swelling d? 11'l High Resonance Substance V
Jsu [Using 6 bodies, on the surface of /i￥sei's synthetic gono・
In addition, a film q having a range of membranes fj made of one synthetic resin
Coating the membrane1. The present invention has been made based on the discovery that the present invention can achieve the object.

1 “Nawashi” ＼Invention, the surface is a film Jr-1: t-10
Synthetic gono having θ property with the same town and θ property for [7 adhesion Vl and base 4.], and (d6 resin coating 11
The object of the present invention is to provide a landscape material that is coated with ψ and has a temporary water-blocking property and is made of a molded material that has a high water content.

1 of the present invention 7 water (water swelling 4/
4. The polymer material molded product is made by blending a super absorbent resin Qτ, such as a diene type Gono 8, a vulcanizing agent, a vulcanization accelerator, a filler, an anti-aging agent, etc. 2, kneading the resulting water. It is obtained by molding a swellable composition using various molding methods such as press molding and extrusion molding.

In addition, the synthetic rubber or synthetic (☆1 resin) used in the coating film according to the 1F water material of the present invention has 71 adhesion to the base H and has the same flexibility as the base material. It is a thing,
In addition, it is preferable to use a material that has excellent water resistance and appropriate water permeability, and examples of such material include synthetic rubber such as nitrile rubber, nitrile rubber, styrene-butadiene rubber, and sulfonated chlorinated polyethylene rubber. Synthetic resins such as rubber, vinyl chloride, and ethylene-vinyl acetate may be used, and these may be used alone or in combination. Among these, chlorozolene rubber and nitrile rubber are particularly suitable in terms of adhesiveness, removability, water resistance, water permeability, and the like.

ζ, 11, solvent yarn IRri emulsion-based chair o't yarn can also be applied to the J1 formation of 1F-water 4'' material, but the adjustment of the membrane H is It's easy! :)
, L, Tagatsu-Ko 1: Interruption 1 (easily between 11 KoJ:
I-1: I-1 [Shi-2] Solvent yarn is preferable because it absorbs moisture 4, Ko6') Used for temporary water-blocking time control Ihi membrane 1
Depending on the choice of synthetic gono or synthetic resin, it can be said that one thing can be done.
In the present invention, the thickness of the coating film is preferably in the range of 3 to 1 (10 fl). 7. If the film thickness is less than 377, the water-blocking effect will be lost 8. Adjustment of the film thickness is done by adjusting the thickness of the synthetic layer or synthetic resin in a solvent-based or emulsion-based system. This can be done by changing the concentration.For example, the formation of a coating film can be done by changing the concentration of a water-swellable polymeric material.
a solution containing synthetic rubber or synthetic resin that is a membrane;
ol< can be easily carried out by immersing in a J-Maru/Yon solution and then drying, or by cold blood spraying or spraying the solution or emulsion and then drying.

The waterproof material having temporary water-blocking properties of the present invention is formed by forming a surface coating film on the surface of a water-swellable polymer material molded article.
5) The beef production culm is extremely simple and easy to use, and is inexpensive and special, and can be temporarily water-blocked by changing the thickness of the vine and valley. time con l-r
It has excellent features such as easy coating, and since the coating film is formed by dipping or dipping, there are no restrictions on the shape of the municipal water material.
There are 7. , Since the [1-water (4) material of the present invention has 44 tons of temporary water, its application [1] is a small amount of water.It does not absorb water and swell when it comes into contact with moisture. In the Kinoshita business and 11 construction matters, for example, shield segment joints [I' former H: L--, 1, pipes and box culverts 1, joint parts with concrete pipes, concrete 1-structure joints L1, etc.] Insert into the gap and leak into the gap, Ll2,
Effectively used for M3ru/kome. -1 Next, the present invention will be explained in more detail with reference to Examples, but the present invention is not limited to Examples.

In addition, the water permeability in the example indicates the following: 6, that is, water swelling is 1 L. As soon as the molded polymer material comes into contact with water, its surface begins to expand. Since the color changes to a bright white, the water permeability is defined as the ratio of the discolored (-) area to the total area. Schiff/Technology: A water permeability of 50% means that half the area of the sample has expanded and changed color. -1 Example 1 Chloroprene rubber (Skyprene w-2 manufactured by Toyo Soda ■)
0) 1-00 parts by weight, 4 parts by weight of magnesium oxide (Kyoso Mag≠150 manufactured by Kyowa Chemical Industry ■), active! 11
．． Lead flower (Sakai Kagaku - Shinka 10 manufactured by Kogyo ■) 5 type needle part, vulcanization accelerator (Sanshin Kagaku Kogyo ■ Suncella 22) o, 5 parts by weight, stearic acid (Hanado Soap ■ Renault S-, +,
o) t, o heavy tension part, agent for aging 1 (Daien Shinko Kagaku 1-
Tsukurak t'5-6) manufactured by Kuraray Sozolen Chemical ■1 Gel-201) and super absorbent resin (manufactured by Kuraray Sozolen Chemical ■1 Gel-201) 100
Parts by weight were added and kneaded using a 10-inch oven roll, and the resulting compound was placed in a 3 ROM thick press mold at 160°C for 130 minutes at f6 (length 1. Om, width 2cm, lWasa: (See the throat-shaped water-swellable polymer '11 molded body!) lko3
, this water-swellable polymer material molded body is l-10pL, -
Rubber adhesive (G5-5 manufactured by Co., Ltd./■)], 000 parts by weight and 0, 25, 70, and 150 parts by weight of Torchine were immersed and dried. Soak the wood in distilled water and visually judge the water permeability. The results are shown in Table 1. -1 Table 9-48 Comparative Example 1 Same method as Example 1, length 1oan, width 20n1 thickness 3
A water-swellable polymer material molded body having a tanzaku-like body was obtained. ,
When it was immersed in distilled water without any surface treatment, it instantly became 100% water permeable and started to expand.Example 2 A water stop test was conducted using the product obtained in Example 1. 1,
That is, set four sheets of water-stopping material between two flanges (0 diameter 250 mm), tighten with a 5 mm spacer at f-1 + - torque of 400 kg-cm, and tighten with a diameter of 18 and a bit 2.5 system. 6. Fill a certain gap with 8 bolts, then inject water into the flange! -10- Comparative Example 2 Using the material obtained in Comparative Example 1, the same test as in Example 2 was carried out. When I went there, the city time was 18 hours.

Example 3 Nido IJ was applied to the surface of the strip-shaped water-swellable polymeric material molded article obtained in Example 1 with a length of 10°C, a width of 2cm, and a thickness of 30cm.
A solution consisting of 100 parts by weight of adhesive (Welbon Toss Bar manufactured by Yokohama = 1m) and 150 parts by weight of acetone was applied with a spatula and dried. When the obtained sample was added to water as in Example, the water permeability reached 100% on the 7th day.

Example 4 Isoprene rubber (IR made by Kura 1 Noisoprene Chemical ■)
-10) Too many parts by weight of a super absorbent resin (manufactured by Clareisoprene Chemical ■, 1 Kel-201) and a vulcanizing agent were added to 10 parts by weight, and the length was 10 parts by weight in the same manner as in Example 1.
1) A water-swellable polymer material molded article having a shape of 2 mm wide and 3 mm thick was obtained. Chloroprene latex (LM-5 manufactured by Denki Kagaku Kogyo ■) was applied to the surface of this water-swellable polymer material molded body.
0) Apply with... 1~. It was dried at 80°C for 48[1,11 hours] and heat-treated at 120°C for 10 minutes. In this way,
When the obtained J'1 water still water (") was immersed in distilled water,
Comparative Example 3 The same method as in Example 4 was used to obtain 10 ttn in length and 2 on in width.

A rhinoceros-shaped water-swellable polymer material molded body having a thickness of 3 ml+ was obtained. When one of the buildings was immersed in distilled water without any surface treatment, it instantly became 100% water permeable and began to expand.
is,.

1 Reihito N-r I Kasei Co., Ltd. (and 1 other person) Agent Akira Agata

Claims (1)

[Scope of Claims] 1. A water-swellable material whose surface is coated with a synthetic rubber or synthetic resin coating film that has adhesion to a base material with a film thickness of 3 to 100 μm and has the same flexibility as the base material. A water-stopping material having temporary water-blocking properties made of a molded polymer material t). 2. The method according to claim 1, wherein the coating film is a chloroprene rubber or nitrile rubber coating film.