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A kind of glass fiber mesh cloth latex and preparation method thereof

A technology of glass fiber and mesh cloth, which is applied in the field of glass fiber mesh cloth latex and its preparation, and can solve the problems of reduced bonding strength between coating and glass fiber, low glass transition temperature of polymer polymers, and aging of glass fiber. Achieve the effects of improving mechanical properties and anti-aging properties, improving adhesion and bonding strength, and increasing bond strength

Active Publication Date: 2021-06-22
杭州龙驹合成材料有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] Its disadvantages are that the glass transition temperature of the polymer in the coating is low, resulting in good fluidity, and at the same time, the bonding strength between the coating and the glass fiber is reduced, and the glass fiber mesh cloth is unrolled from the rolled state or due to misoperation However, when it is in contact with the wall or other objects, the coating is easy to peel off from the glass fiber mesh during the separation process of the glass fiber mesh cloth, which makes the glass fiber exposed and causes the glass fiber to age, so it needs to be improved.

Method used

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  • A kind of glass fiber mesh cloth latex and preparation method thereof
  • A kind of glass fiber mesh cloth latex and preparation method thereof
  • A kind of glass fiber mesh cloth latex and preparation method thereof

Examples

Experimental program
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Effect test

Embodiment 1

[0065] A preparation method for glass fiber mesh cloth latex, comprising the following steps,

[0066] S1: Put 15-35kg of styrene, 50-65kg of butadiene, 10-15kg of emulsifier and 250-300kg of water at a time after the polymerization tank is evacuated, stir and heat up to 40-60°C, then add the first initiator 2- 3.5kg, keep the temperature and continue to stir the reaction for 10-25 hours, react until the conversion rate reaches above 98%, then cool down to below 30°C to obtain seed latex;

[0067] S2: Mix 70-90 kg of styrene and 1-3 kg of chain transfer agent evenly, then add 40-55 kg of butadiene and mix evenly, then add 5-10 kg of siloxane and mix evenly to obtain an oil phase liquid;

[0068] S3: Mix 3-8kg of crosslinking agent, 250-320kg of water and other raw materials of water phase liquid to obtain water phase liquid;

[0069] S4: uniformly mixing 7-12kg of the second initiator and 90-130kg of water to obtain an initiator solution;

[0070] S5: Add 15-20kg of seed lat...

Embodiment 2

[0095] A method for preparing glass fiber mesh cloth latex, which is improved on the basis of Example 1, the siloxane is vinyltrimethoxysilane, the corresponding latex is obtained, and the adhesion and peeling test is carried out. The test results are as follows.

[0096]

Embodiment 3

[0098] A preparation method of glass fiber mesh cloth latex, improved on the basis of Example 1, the siloxane is 3-butenetriethoxysilane, the corresponding latex is obtained, and the adhesion and peeling test is carried out, the test results are as follows .

[0099]

[0100]

[0101] It can be known from Example 2 and Example 3 that when siloxane is alkenyl siloxane, siloxane can be polymerized with butadiene monomer and styrene monomer, and the siloxane can be grafted into butadiene-benzene In the ethylene polymerization system, the compatibility of siloxane in the butadiene-styrene polymerization system can be strengthened; crosslinking can occur between siloxanes inserted into the butadiene-styrene polymerization system, and the butadiene can be improved. - The degree of cross-linking in the styrene polymerization system improves the bonding strength of the coating, and the siloxane is grafted into the butadiene-styrene polymerization system and then combined with the ...

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Abstract

The invention relates to the field of adhesives, discloses a glass fiber mesh cloth latex and a preparation method thereof, which solves the problem that the bonding strength between the existing latex coating and glass fiber is reduced and is easy to peel off, and the main point of the technical solution is a glass fiber Mesh cloth latex is polymerized by seed emulsion, including seed latex, oil phase liquid, water phase liquid, initiator solution, soft water, etc., wherein the raw material oil phase liquid used to form the shell structure contains siloxane, and the oil phase The liquid is added completely in the seed emulsion polymerization at one time, so that the obtained shell structure is mixed with a high concentration of siloxane, and the silicon-oxygen bond in the siloxane can react with the free hydroxyl groups on the surface of the glass fiber to improve the adhesion between the coating and the surface of the glass fiber. Adhesion, bond strength and improved coating blocking resistance, further reducing the possibility of coating peeling from the glass fiber.

Description

technical field [0001] The invention belongs to the field of adhesives, in particular to a glass fiber mesh cloth latex and a preparation method thereof. Background technique [0002] Glass fiber mesh cloth is based on glass fiber woven fabric, soaked in polymer emulsion to form a latex coating. Therefore, it has good alkali resistance, flexibility, and high tensile strength in warp and weft, and can be widely used in thermal insulation, waterproofing, and crack resistance of internal and external walls of buildings. [0003] Among them, the flexibility of the glass fiber mesh cloth is affected by the latex coating formed by soaking the surface of the glass fiber mesh cloth. When the glass transition temperature of the polymer in the coating is low, the polymer exhibits good fluidity and the coating It has good ductility when stretched, and reduces the resistance of the glass fiber mesh when it is bent. When the glass transition temperature of the polymer in the coating is...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C08F236/10C08F212/06C08F230/08C09J109/06
CPCC08F236/10C09J109/06C08F212/06C08F230/08
Inventor 刘培元季永忠李卫生
Owner 杭州龙驹合成材料有限公司
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