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Vinyl styrene-butadiene latex as well as preparation method and application thereof

A vinyl styrene-butadiene and latex technology, which is used in conjugated diene coatings, coatings, asphalt coatings, etc., can solve the problems that water-emulsion rubber asphalt waterproof coatings cannot be applied, and powder rubber cannot be added.

Pending Publication Date: 2022-07-22
山东京博中聚新材料有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0005] Patent CN201910635600 Qi Xiangfei and Wang Kai announced the preparation method of powdered styrene-butadiene rubber used in self-adhesive waterproof membranes. Powdered rubber cannot be added to the water-emulsion rubber asphalt waterproof coating system
Patent CN201810656103 Mu Xiaopei, Wang Jinbin, etc. disclose a cold-applied solvent-based rubber asphalt waterproof coating, the rubber components of which are polybutadiene liquid rubber, powdered styrene-butadiene rubber and styrene isoprene block copolymer. None of the three rubber components can be used in water-emulsion rubber asphalt waterproof coatings

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0036]Using a 2L polymerization kettle, the feeding amount is 1200g in total, first evacuated, then replaced with nitrogen, and 12.8 parts of aqueous solutions (mass concentration of 27%) of all emulsifier sodium rosinate, molecular weight regulator tertiary ten, are added to the polymerization kettle at one time. 0.4 part of hexaalkyl mercaptan, 0.3 part of aqueous solution of sodium naphthalene methylene sulfonate as diffusing agent (30% by mass), 0.6 part of radical stabilizer cetylamine polyoxyethylene ether oxide, electrolyte hydrogen carbonate 0.1 part of sodium and 155 parts of deionized water, start stirring, when the temperature of the reactor reaches 5-10 ℃, add 70 parts of butadiene, 30 parts of styrene, 2 parts of N-vinylpyrrolidone, initiator hydrogen peroxide 0.15 parts of mantle was continuously added dropwise into the reaction kettle, and the temperature was raised to 30°C after 4 hours of reaction to continue the reaction. When the conversion rate reached more ...

Embodiment 2

[0042] Using a 2L polymerization kettle, the feeding amount is 1200g in total, first evacuated, then replaced with nitrogen, and 13.8 parts of aqueous solutions (mass concentration of 25%) of all emulsifier sodium rosinate, molecular weight regulator tertiary ten, are added to the polymerization kettle at one time. 0.3 part of dialkyl mercaptan, 0.3 part of aqueous solution of sodium lignosulfonate as diffusing agent (25% by mass), 0.4 part of stearylamine polyoxyethylene ether oxide as radical stabilizer, 0.1 part of electrolyte potassium chloride 70 parts of butadiene, 30 parts of styrene, 5 parts of N-vinyl caprolactam, initiator hydrogen peroxide to montane 0.1 part was continuously added dropwise into the reaction kettle, and the temperature was raised to 40° C. to continue the reaction after 5 hours of reaction. When the conversion rate reached more than 96.0%, the latex was transferred to the degassing kettle. The vacuum degree in the degassing kettle was -0.10Mpa, and t...

Embodiment 3

[0046] Use a 2L polymerization kettle, the charging amount is 1200g, first evacuated, then replaced with nitrogen, in the polymerization kettle, 8.9 parts of aqueous solutions (mass concentration of 28%) of all emulsifiers potassium oleate, molecular weight regulator tertiary ten are added at one time in the polymerization kettle. 0.4 part of hexaalkyl mercaptan, 0.4 part of aqueous solution of sodium methylene dinaphthalene sulfonate as diffusing agent (32% by mass), 0.2 part of free radical stabilizer cetylamine polyoxyethylene ether oxide, electrolyte carbonic acid 0.2 parts of sodium hydrogen and 145 parts of deionized water, start stirring, when the temperature of the reactor reaches 5-10 ° C, 70 parts of butadiene, 30 parts of styrene, 3.5 parts of 1,4-cyclohexyl dimethanol divinyl ether 0.15 parts of cumene hydrogen peroxide and 0.15 parts of initiator cumene hydrogen peroxide were continuously added dropwise into the reaction kettle, and the temperature was raised to 45...

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Abstract

The invention provides vinyl styrene-butadiene latex as well as a preparation method and application thereof, and the latex is prepared from the following raw materials in parts by weight: 110 to 160 parts of water, 20 to 40 parts of styrene, 60 to 80 parts of butadiene, 1 to 6 parts of monomer, 1 to 4 parts of pure emulsifier, 0.1 to 0.3 part of electrolyte, 0.1 to 0.5 part of diffusant, 0.05 to 0.2 part of redox initiator, 0.1 to 0.5 part of molecular weight regulator, 0.1 to 0.8 part of free radical stabilizer, 0.1 to 0.3 part of terminator and 0.1 to 0.15 part of anti-aging agent. The monomer is selected from one or more of an N-vinyl compound, an O-vinyl compound, a divinyl compound and a hydroxyl vinyl compound. The latex can improve the cohesiveness and low temperature resistance of the asphalt coating. The bonding strength of the water-emulsion rubber asphalt coating and a cement base surface is greater than 2MPa, the tensile elongation at break is greater than 800%, and the coating can resist the low temperature of-25 DEG C.

Description

technical field [0001] The invention belongs to the technical field of styrene-butadiene latex, in particular to a vinyl styrene-butadiene latex and a preparation method and application thereof. Background technique [0002] There are currently two main categories of building waterproofing materials, namely: waterproofing membranes and waterproofing coatings. Among them, waterproofing membranes include two main categories: polymer-modified asphalt membranes and synthetic polymer membranes. According to the different main components, waterproof coatings can be divided into two categories: solvent-based coatings and water-based coatings. [0003] Asphalt has good waterproof performance, and the current asphalt-based waterproof material accounts for about 65% of the entire waterproof material. Asphalt-based waterproofing materials are mainly divided into two categories, namely asphalt waterproofing membranes and asphalt waterproofing coatings. The former is a sheet material r...

Claims

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Application Information

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IPC IPC(8): C08F236/10C08F212/08C08F226/10C08F226/06C08F216/12C08F4/40C09D195/00C09D109/08
CPCC08F236/10C08F4/40C09D195/00C08F212/08C08F226/10C08F226/06C08F216/125C08L9/08
Inventor 郭平云王欣张晓岭郑红兵任学斌栾波
Owner 山东京博中聚新材料有限公司
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