KR940004546B1 - Method of producing waterproof sheet - Google Patents

Abstract

mixing 35-55 wt.% of the chloro sulphonate polyethylene resin (CSPE) shown in formula (I), 30-50 wt.% of the organic solvent, 5-15 wt.% of the antioxidant, e.g. the metal-based antioxidant such as lead chloride, magnesium chloride, Zinc chloride, and 5-15 wt.% of the polyester-based adhesive to make a mixture; agitating and milling the mixture composition; coating both sides of the fabric with the mixture; drying the coated fabric at 120-130 deg.C for 2 minutes; and finally heat treating the fabric at 180-190 deg.C. (where x: 8-14, n: 10-17).

Description

Manufacturing method of waterproof sheet laminated with synthetic resin

The present invention relates to a method for manufacturing a waterproof sheet laminated with synthetic resin, and more particularly, waterproof and laminated with synthetic resin having enhanced durability and weatherability, which is suitable for use in construction of a waterproof layer of a dry product or for waterproofing a water channel and a bottom for water storage. It relates to a method of producing a sheet.

In general, synthetic resin laminated waterproof sheet having excellent durability and weather resistance is a material used in a building construction method that satisfies the waterproof function of a building and also serves as a reinforcing material by inserting the waterproof sheet inside the ceiling as a roofing material of the building material. to be.

Conventionally, the waterproof sheet has been used a post-woven fabric (mat) using a tidene polyester polyester, or a waterproof sheet coated with a general-purpose rubber, so that the waterproof function is lowered, the durability is poor, and the chemical resistance and ozone resistance are also high. Not only was it rare, but also the weatherability was not satisfactory.

Accordingly, the present invention is to solve such a problem in the prior art to prevent water loss due to complete waterproofing, and also to provide a waterproof sheet laminated with a synthetic resin that can be used semi-permanently, which can eliminate the soil dent phenomenon. have.

The method of manufacturing a synthetic resin laminated waterproof sheet can be largely divided into a coating method and a laminating method. Since the laminating method has a drawback of poor adhesion to bubbles, the method of coating is used in the present invention.

Hereinafter, the present invention will be described in detail.

The present invention is to prepare a waterproof sheet laminated synthetic resin by disposing a resin composition composed of a resin, an organic solvent, an adhesive and other additives, chloro sulfonate polyethylene (CSPE) resin represented by the following structural formula (I) 35 to 55 After mixing by weight%, organic solvent 30 to 50% by weight, antioxidant 5 to 15% by weight and polyester adhesive 5 to 15% by weight, the mixed resin composition is stirred and milled and coated on both sides of the fiber cloth 120 It is characterized in that it is a method for producing a waterproof sheet laminated synthetic resin by drying for 2 minutes at 130 to 130 ℃ and heat treatment at 180 to 190 ℃.

Wherein X is an integer from 8 to 14 and n is an integer from 10 to 17.

Hereinafter, the present invention will be described in more detail.

The present invention is a polyester resin having a molecular weight of 200 to 800 for the purpose of improving the durability and weather resistance in the manufacture of a waterproof sheet laminated with synthetic resin by treating the resin composition composed of a resin, an organic solvent, an adhesive and other additives When used 35 to 55% by weight, when the amount is less than 35% by weight is less cross-linking, so that it is not completely waterproof, when used in excess of 55% by weight 55% by weight with the difficulty of the process The saturation is almost the same as when

Since the chlor sulfonate polyethylene (CSPE) used as the polyester resin in the present invention has sulfonyl collide, it has sulfonyl chloride when exposed to moisture or ultraviolet rays, and thus the sulfonyl collide group is oxidized when exposed to moisture or ultraviolet rays. Space vulcanization, represented by the following structural formula (II), by the metal sulfonate crosslinking agent, contributes to the increase in weather resistance and durability.

Wherein X is an integer from 8 to 14 and n is an integer from 10 to 17.

In the above, spatial crosslinking refers to a phenomenon in which crosslinking occurs between molecules when PbC1 ₂ , a metal-based antioxidant, is added to CSPE resin, which is a basic resin.

In addition, toluene or butanol is used as the organic solvent, and 30 to 50% by weight is preferable.

As the antioxidant, metal chlorides such as lead chloride, magnesium chloride, and zinc chloride are used, and 5 to 15% by weight is preferable. If less than 5% by weight, crosslinking is less, it is completely waterproof. If it is used in excess of 15% by weight, it is almost the same as the effect of 15% by weight, which is disadvantageous in terms of cost.

As the adhesive, a polyester adhesive having a well-known molecular weight of 20,000 to 25,000 is used in an amount of 5 to 15% by weight.

Subsequently, the resin composition obtained by mixing the above components by stirring and milling was applied to both sides of the fiber cloth, dried at 120 to 130 ° C. for 2 minutes, and heat-treated at 180 to 190 ° C., in which the sulfonyl chloride group was used as the structural formula. By producing a crosslinking reaction represented by (II) to form a metal sulfonide crosslinking structure, a synthetic resin waterproof sheet having excellent durability and weather resistance is produced.

By using the waterproof sheet manufactured in accordance with the present invention in the construction of the waterproof layer of the building or waterproofing the bottom of water for agriculture and water storage, it is possible to prevent the loss of water and to remove the ground dent phenomenon, it can be used semi-permanently.

Hereinafter, the present invention will be described in more detail based on Examples and Comparative Examples.

[Examples 1-3 and Comparative Examples 1-4]

Resin. While changing the weight percent of the antioxidant and adhesive as shown in Table 1 below, the resin blended to 100% by weight was mixed and milled, and then coated on both sides of the fiber cloth, dried at 120 ° C. for 2 minutes, and dried at 190 ° C. Prepared by heat treatment for minutes.

Physical properties of the above-described waterproof sheet-ASTM method (elongation: ASTM D-412, waterproofness: ASTM D-471, low temperature band test: ASTM D-2136, burst temperature test: ASTM D-746, ozone resistance: Test results according to ASTM D-1149.) Are shown in Table 1 below.

TABLE 1

Claims (2)

35 to 55% by weight of chloro sulfonate polyethylene (CSPE) resin represented by the following structural formula (I) in the manufacture of a waterproof sheet laminated with synthetic resin by treating the resin composition composed of a resin, an organic solvent, an adhesive, and other additives, After mixing 30 to 50% by weight of organic solvent, 5 to 15% by weight of antioxidant and 5 to 15% by weight of polyester adhesive, the mixed resin composition is stirred and milled and coated on both sides of the fiber cloth, and then 120 to 130 ° C. Method of producing a waterproof sheet laminated synthetic resin, characterized in that by drying for 2 minutes and heat-treated at 180 to 190 ℃. Wherein X is an integer from 8 to 14 and n is an integer from 10 to 17. The method of claim 1, wherein the antioxidant is prepared by using lead chloride, magnesium chloride, or zinc chloride as a metal-based antioxidant.