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Acrylate elastic emulsion with excellent low-temperature breaking elongation and preparation method thereof

A technology of elongation at break and acrylate, which is applied in the direction of coating, etc., can solve the problems of loss of elasticity paint covering cracks, failure to achieve elastic emulsion, and decrease in elongation at break, and achieve excellent molecular chain flexibility, high elasticity, and reduced Rigid effect

Active Publication Date: 2017-05-10
上海巴德富实业有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, in a low temperature environment from -15 to 0°C, its elastic properties will usually decrease, and the specific performance is that the elongation at break is less than 120%, but it can still meet the requirements of basic practical applications.
However, when it is applied in the severe winter climate in the north, because the ambient temperature will be lower than -30°C, the existing acrylate elastic emulsion will have obvious problems of poor elasticity and a very obvious drop in elongation at break. , even unable to meet the requirements of elastic emulsion in the national standard and practical application
In fact, in Northeast my country and Russia, there are often severe cold climates below -30°C in winter. In this harsh natural environment, the existing acrylic elastic coatings almost completely lose their elasticity and lose their elasticity. Function of Elastomeric Coatings to Cover Cracks

Method used

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  • Acrylate elastic emulsion with excellent low-temperature breaking elongation and preparation method thereof

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preparation example Construction

[0034] The preparation method of the acrylate elastic emulsion with excellent low temperature elongation at break of the present invention comprises the following steps:

[0035] a: Add 30-40% of the total mass of deionized water and 10-15% of the total mass of emulsifier into the reactor at normal temperature and pressure, stir evenly and raise the temperature until the temperature in the reactor reaches 75-90°C;

[0036] b: Add 30-40% of the total mass of deionized water, butyl acrylate, isooctyl acrylate, styrene, acrylonitrile, methacrylic acid, acrylamide, glycidyl methacrylate, The remaining amount of emulsifier is continuously stirred for 10-60 minutes to prepare a uniform pre-emulsion;

[0037] c: Add persulfate and the rest of deionized water into the initiator tank at normal temperature, and stir until completely dissolved into a persulfate solution for later use;

[0038] d: Maintain the temperature in the reaction kettle of step a at 75-90°C, add 5-10% of the tota...

Embodiment 1

[0046] The acrylate elastic emulsion with excellent elongation at low temperature of the present invention includes deionized water, butyl acrylate, isooctyl acrylate, styrene, acrylonitrile, methacrylic acid, acrylamide, glycidyl methacrylate, aminopoly Siloxane, emulsifier, ammonium persulfate, potassium persulfate, sodium persulfate, the above components are calculated in parts by mass: 100 parts of deionized water, 70 parts of butyl acrylate, 10 parts of isooctyl acrylate, benzene 5 parts of ethylene, 5 parts of acrylonitrile, 1 part of methacrylic acid, 1 part of acrylamide, 0.1 part of glycidyl methacrylate, 1 part of amino polysiloxane, 2 parts of emulsifier, 0.1 part of ammonium persulfate.

[0047] The emulsifiers include nonionic emulsifiers and anionic emulsifiers, and the molar ratio of nonionic emulsifiers to anionic emulsifiers is 1:1.

[0048] The nonionic emulsifier is an alkyl polyoxyethylene ether, and its content is calculated in parts by mass: 1 part of alk...

Embodiment 2

[0061] The acrylate elastic emulsion with excellent elongation at low temperature of the present invention includes deionized water, butyl acrylate, isooctyl acrylate, styrene, acrylonitrile, methacrylic acid, acrylamide, glycidyl methacrylate, aminopoly Siloxane, emulsifier, ammonium persulfate, potassium persulfate, sodium persulfate, the above components are calculated in parts by mass: 100 parts of deionized water, 90 parts of butyl acrylate, 30 parts of isooctyl acrylate, benzene 15 parts of ethylene, 10 parts of acrylonitrile, 5 parts of methacrylic acid, 5 parts of acrylamide, 0.5 parts of glycidyl methacrylate, 5 parts of aminopolysiloxane, 10 parts of emulsifier, 0.1 part of ammonium persulfate, persulfuric acid Potassium 0.2 part, sodium persulfate 0.2 part.

[0062] The emulsifiers include nonionic emulsifiers and anionic emulsifiers, and the molar ratio of nonionic emulsifiers to anionic emulsifiers is 1:1.

[0063] The nonionic emulsifier is a mixture of alkyl po...

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Abstract

The invention discloses acrylate elastic emulsion with excellent low-temperature breaking elongation, comprising, by weight, 100 parts of deionized water, 70-90 parts of butyl acrylate, 10-30 parts of 2-ethylhexyl acrylate, 5-15 parts of styrene, 5-10 parts of acrylonitrile, 1-5 parts of methacrylic acid, 1-5 parts of acrylamide, 0.1-0.5 part of glycidyl methacrylate, 1-5 parts of aminopolysiloxane, 2-10 parts of an emulsifier, and 0.1-0.5 part of persulfate. The acrylate elastic emulsion has excellent low-temperature breaking elongation.

Description

technical field [0001] The invention relates to the processing field of architectural coatings, in particular to an acrylate elastic emulsion with excellent low-temperature elongation at break and a preparation method thereof. Background technique [0002] With the continuous improvement of living standards, people have increasingly strict requirements on the construction effect of architectural coatings. Traditional elastic architectural coatings have the functions of waterproofing and covering cracks, and have good elasticity. The elasticity is mainly provided by elastic emulsion, and acrylate elastic emulsion is the most commonly used type of elastic architectural coatings. However, acrylate elastic emulsion itself has significant technical defects. Due to the hot viscous and cold brittle characteristics of acrylate elastic emulsion, it is very sensitive to changes in temperature, mainly reflected in: when the ambient temperature is higher than the glass transition tem...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C08F220/18C08F212/08C08F220/48C08F220/06C08F220/56C08F220/32C08F2/30C08F2/26C09D133/08C09D183/08
CPCC08F2/26C08F2/30C08F220/18C08F220/1804C09D133/08C08L83/08C08F220/1808C08F212/08C08F220/48C08F220/06C08F220/56C08F220/325
Inventor 舒江曾庆乐杨文涛
Owner 上海巴德富实业有限公司
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