Waterborne EVA (ethylene-vinyl acetate) treating agent and preparation method thereof

A treatment agent and water-based technology, which is applied in the field of EVA treatment agent and its preparation, can solve the problems of low-temperature use performance defects, easy volatility, and environmental pollution, and achieve the effect of high emulsion stability and good frost resistance

Active Publication Date: 2012-12-26
广东多正树脂科技有限公司
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  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, since EVA is a weakly polar material in polymers, it has no good affinity with neoprene adhesives and polyurethane adhesives with strong polarity, which brings difficulties to the adhesion of EVA.
At present, the method of grafting and modifying SBS with monomers such as methyl methacrylate (MMA ) and acrylic acid (AA ) to synthesize EVA surface treatment agents is generally used in the industry to solve the adhesion problem of EVA materials, and a relatively satisfactory effect has been obtained, but among them Solvents such as toluene, which are volatile during use, will pollute the environment, have a certain impact on the health of operators, and even cause fires.
The traditional emulsion-type acrylate copolymer uses water as the dispersion medium and is almost pollution-free when used, but it has defects in low-temperature performance, and the effect of treating high-hardness EVA is not good.

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment Construction

[0022] The invention relates to a water-based EVA treatment agent, which uses an emulsion-type acrylate copolymer as the main base material, and uses a mixture of deionized water and small molecular group water as the main dispersion medium.

[0023] The present invention will be further described in detail below in conjunction with the examples.

[0024] In the acrylic emulsion system of deionized water: small molecular group water = 2:1, by adding sodium hypochlorite and a self-made polymer emulsifier of 4% -6% of the total amount of monomers, and adding an appropriate amount ( 10% of the mixed water ratio) to obtain a high-hardness EVA shoe material treatment agent with a solid content of 30%. The emulsion treatment agent has good cold resistance and low-temperature construction. After being stored at a low temperature for 1 month and tested in a simulated environment at 0°C, the treatment effect can meet the user's requirements. The viscosity of the emulsion treatment age...

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Abstract

The invention discloses a waterborne EVA (ethylene-vinyl acetate) treating agent and a preparation method thereof, wherein the treating agent is characterized by taking emulsion acrylate copolymer as main base material, and mixture of de-ionized water and micro cluster water as main dispersion medium. When the treating agent is used, pollution hardly exists; the emulsion stability is high; the product has better freezing resistance and can treat EVA soft polymer material with high hardness.

Description

technical field [0001] The invention relates to the technical field of foaming materials, in particular to an EVA treatment agent and a preparation method thereof. Background technique [0002] With the rapid development of the furniture and footwear industry, EVA (ethylene-vinyl acetate copolymer) foaming materials are widely used in upholstered sofas, midsoles of travel shoes, and beach slippers. However, since EVA is a weakly polar material in polymers, it has no good affinity with neoprene adhesives and polyurethane adhesives with strong polarity, which brings difficulties to the adhesion of EVA. At present, the method of grafting and modifying SBS with monomers such as methyl methacrylate (MMA ) and acrylic acid (AA ) to synthesize EVA surface treatment agents is generally used in the industry to solve the adhesion problem of EVA materials, and a relatively satisfactory effect has been obtained, but among them Solvents such as toluene, which are volatile during use, wi...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C08L33/02C08L33/08C08L33/20C08L33/14C08F120/06C08F120/18C08F120/44C08F120/28C08F120/32C08F220/06C08F220/18C08F220/44C08F220/28C08F220/32C09D133/02C09D133/08C09D133/20C09D133/14
Inventor 郑李华李树泉许玉良洪必贵曾广福罗立奉李国平丁洪成
Owner 广东多正树脂科技有限公司
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