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A kind of acrylate elastic emulsion with excellent low temperature elongation at break 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 elongation at break decrease, elastic performance decline, and elastic deterioration, and achieve the effects of excellent flexibility, reduced rigidity, and excellent elasticity

Active Publication Date: 2019-02-01
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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  • A kind of acrylate elastic emulsion with excellent low temperature elongation at break 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 includes the following steps:

[0035] a: Add 30-40% of the total mass of deionized water and 10-15% of the total mass of emulsifier to the reactor under normal temperature and pressure, stir evenly and heat up to 75-90℃ in the reactor;

[0036] b: At room temperature, 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, keep stirring for 10-60 minutes to prepare a uniform pre-emulsion;

[0037] c: Add persulfate and the remaining deionized water to the initiator tank at room temperature, and stir until it is completely dissolved into a persulfate solution for later use;

[0038] d: Maintain the temperature in the reactor of step a at 75-90°C, and add 5-10% of the total mass of the pre-emulsion obtained in ...

Embodiment 1

[0046] The acrylate elastic emulsion with excellent low temperature breaking elongation of the present invention includes deionized water, butyl acrylate, isooctyl acrylate, styrene, acrylonitrile, methacrylic acid, acrylamide, glycidyl methacrylate, amino poly Silicone, emulsifier, ammonium persulfate, potassium persulfate, sodium persulfate, the above components in terms of parts by mass are: 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, and 0.1 part of ammonium persulfate.

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

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

Embodiment 2

[0061] The acrylate elastic emulsion with excellent low temperature breaking elongation of the present invention includes deionized water, butyl acrylate, isooctyl acrylate, styrene, acrylonitrile, methacrylic acid, acrylamide, glycidyl methacrylate, amino poly Silicone, emulsifier, ammonium persulfate, potassium persulfate, sodium persulfate, the above components in terms of parts by mass are: deionized water 100 parts, butyl acrylate 90 parts, isooctyl acrylate 30 parts, 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 amino polysiloxane, 10 parts of emulsifier, 0.1 part of ammonium persulfate, persulfuric acid 0.2 parts of potassium and 0.2 parts of sodium persulfate.

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

[0063] The non-ionic 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 breaking elongation 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 are coatings that have the functions of waterproofing and covering cracks and have good elasticity. The elasticity is mainly provided by elastic emulsions. Acrylic elastic emulsions are the most commonly used in elastic architectural coatings. However, acrylate elastic emulsions themselves have major technical defects. Because acrylic elastomeric emulsion has the characteristics of hot, sticky, cold and brittle, it is very sensitive to temperature changes, mainly reflected in: when the ambient temperature is higher than the glass trans...

Claims

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Application Information

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Patent Type & Authority Patents(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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