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EVA/PEBAX supercritical foaming composite shoe material and preparation method thereof

A supercritical technology for footwear, applied in applications, footwear, apparel, etc., can solve the problems of inability to distribute evenly, low melting point, affecting the quality of supercritical foamed composite footwear materials, etc., and achieve far-reaching application prospects and mechanical properties. Good, lightweight effect

Active Publication Date: 2020-11-03
东莞市国立运动器材有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

With the increase of the polyether content of PEBAX, the polymer becomes softer and has higher low-temperature impact strength, but because the viscosity of PEBAX mainly depends on humidity, temperature and storage time, the melting point is low, which is not conducive to 22-28MPa, 150 ℃ supercritical N 2 Under the same conditions, the EVA is evenly distributed, resulting in smaller pore sizes that cannot be evenly distributed inside the polymer material, which affects the quality of supercritical foam composite shoe materials, etc.

Method used

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  • EVA/PEBAX supercritical foaming composite shoe material and preparation method thereof

Examples

Experimental program
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Effect test

Embodiment 1

[0068] Embodiment 1 provides a kind of EVA / PEBAX supercritical foaming composite shoe material, by weight, the preparation raw material of described EVA / PEBAX supercritical foaming composite shoe material is: ethylene-vinyl acetate copolymer 30 parts , 10 parts of styrene-butadiene copolymer, 30 parts of thermoplastic PA12 polyether elastomer, 1 part of peroxide, 1.2 parts of nucleating agent, 5 parts of polyether grafted polyethylene maleic anhydride copolymer, stearic acid 1 part zinc;

[0069] The grade of the ethylene-vinyl acetate copolymer is LG EVA EA28400, the content of vinyl acetate (VO) is 28wt%, and the melt mass flow rate (190°C, 2.16kg) is 400g / 10min, purchased from Korea LG Chemical Company;

[0070] The styrene / butadiene block ratio in the styrene-butadiene copolymer is 40 / 60, the brand is SBS YH-792, purchased from Baling Branch of China Petroleum & Chemical Corporation;

[0071] The trade mark of described thermoplastic PA12 polyether elastomer is 7233SP 0...

Embodiment 2

[0085] Embodiment 2 provides a kind of EVA / PEBAX supercritical foaming composite shoe material, by weight, the preparation raw material of described EVA / PEBAX supercritical foaming composite shoe material is: ethylene-vinyl acetate copolymer 40 parts , 20 parts of styrene-butadiene copolymer, 40 parts of thermoplastic PA12 polyether elastomer, 3 parts of peroxide, 1.6 parts of nucleating agent, 8 parts of polyether grafted polyethylene maleic anhydride copolymer, stearic acid 3 parts of zinc;

[0086] Described ethylene-vinyl acetate copolymer is with embodiment 1;

[0087] Described styrene-butadiene copolymer is with embodiment 1;

[0088] Described thermoplastic PA12 polyether elastomer is with embodiment 1;

[0089] The peroxide is bis-tert-butylperoxycumene (CAS No. 2212-81-9);

[0090] Described nucleating agent is with embodiment 1;

[0091] Described polyether graft polyethylene maleic anhydride copolymer is with embodiment 1;

[0092] The CAS number of the zinc s...

Embodiment 3

[0098] Embodiment 3 provides a kind of EVA / PEBAX supercritical foaming composite shoe material, by weight, the preparation raw material of described EVA / PEBAX supercritical foaming composite shoe material is: ethylene-vinyl acetate copolymer 35 parts , 15 parts of styrene-butadiene copolymer, 35 parts of thermoplastic PA12 polyether elastomer, 2 parts of peroxide, 1.4 parts of nucleating agent, 6 parts of polyether grafted polyethylene maleic anhydride copolymer, stearic acid Zinc 2 parts;

[0099] Described ethylene-vinyl acetate copolymer is with embodiment 1;

[0100] Described styrene-butadiene copolymer is with embodiment 1;

[0101] Described thermoplastic PA12 polyether elastomer is with embodiment 1;

[0102] The peroxide is bis-tert-butylperoxycumene (CAS No. 2212-81-9);

[0103] Described nucleating agent is with embodiment 1;

[0104] Described polyether graft polyethylene maleic anhydride copolymer is with embodiment 1;

[0105] The CAS number of the zinc stea...

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Abstract

The invention belongs to the technical field of footwear products, and particularly relates to an EVA / PEBAX supercritical foaming composite material for shoes and a preparation method thereof. The EVA / PEBAX supercritical foaming composite shoe material at least comprises the following preparation raw materials in parts by weight: 30-40 parts of an ethylene-vinyl acetate copolymer, 10-20 parts of astyrene-butadiene copolymer, 30-40 parts of a thermoplastic PA12 polyether elastomer, 1-3 parts of peroxide and 1.2-1.6 parts of a nucleating agent. The EVA / PEBAX supercritical foaming composite shoematerial prepared by the invention is good in foaming effect, high in foaming efficiency, uniform, small and compact in foam holes, light in weight, high in strength, excellent in mechanical propertyand use property, extremely high in tensile strength, large in elongation at break, good in mechanical property and extremely high in tearing strength. The foaming process is environmentally friendly, wherein the produced product is free of odor of a foaming agent and a cross-linking agent, and the same mechanical property as a chemical foaming material can be obtained, so that the invention hasa far-reaching application prospect.

Description

technical field [0001] The invention belongs to the technical field of footwear products, and in particular relates to an EVA / PEBAX supercritical foaming composite shoe material and a preparation method thereof. Background technique [0002] EVA chemical foaming material is currently a relatively conventional foaming material in the application of shoe materials. It has a soft texture, is comfortable and light, has a good anti-slip effect, and its mechanical strength and rebound performance can meet the requirements of general shoe materials, so it is widely used by consumers. However, with the development of society, people have higher and higher requirements for the environmental protection and odor of shoes. The chemical foaming material EVA is easy to have foaming agent residues because its base material contains chemical foaming agents and chemical crosslinking agents. It is not friendly to the environment, and has a slight odor. Due to the uneven mixing of the foaming ...

Claims

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Application Information

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IPC IPC(8): C08L23/08C08L53/02C08L87/00C08K13/02C08K5/14C08K3/22C08K5/098C08J9/12A43B1/14
CPCC08J9/122C08J9/0061C08J9/008C08J9/0023C08J9/0095A43B1/14C08J2203/08C08J2203/06C08J2323/08C08J2387/00C08J2453/02C08J2487/00C08K13/02C08K5/14C08K5/098C08K2201/011C08K2003/2296Y02P20/54
Inventor 甘舸乔志龙徐伟鹏
Owner 东莞市国立运动器材有限公司
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