Soft high-elasticity wear-resisting electrostatic-discharge EVA (ethylene-vinyl acetate) composite foam material and preparation method thereof

Abstract

The invention discloses soft high-elasticity wear-resisting electrostatic-discharge EVA (ethylene-vinyl acetate) composite foam material and a preparation method thereof. The soft high-elasticity wear-resisting electrostatic-discharge EVA composite foam material is made by material mixing, granulating and foaming; materials include, by weight, 25-50 parts of ethylene-vinyl acetate copolymer, 15-35parts of polyolefin thermoplastic elastomer, 15-25 parts of ethylene propylene diene monomer rubber, 10-20 parts of polyolefin block copolymer, 1-3 parts of graphene oxide, 3-8 parts of a wear resistant, 4-6 parts of a filling agent, 0.4-0.6 part of an activator, 0.7-1.2 parts of a crosslinking agent, 2.5-3.5 parts of a foaming agent, and 2.1-4.3 parts of aids, wherein vinyl acetate accounts for26-40% by mass of the ethylene-vinyl acetate copolymer. The soft high-elasticity wear-resisting electrostatic-discharge EVA composite foam material has good softness and comfort, excellent elasticityand excellent wear resistance, and has good electrostatic discharge performance; the preparation method of the soft high-elasticity wear-resisting electrostatic-discharge EVA composite foam material is simple and easily operable.

Description

technical field [0001] The invention relates to the field of materials for sports shoe soles, in particular to a soft, highly elastic, wear-resistant, electrostatically releasable EVA composite foaming material and a preparation method thereof. Background technique [0002] With the rapid development of the sports shoes market, people have higher and higher requirements for the wearing experience of the soles. Good functionality, softness and comfort have become a development trend. In winter, due to the relatively dry weather, it is easy to generate static electricity, which seriously affects the wearer's experience. In order to solve this problem, electrostatic discharge and wear-resistant EVA foam materials are usually used as the midsole and outsole of sports shoes to solve the above problems, but the current In order to meet certain wear-resistant requirements, the EVA foam material used for shoe soles is generally made of higher hardness, higher density, and poor cushi...

AI Technical Summary

Problems solved by technology

In winter, due to the relatively dry weather, it is easy to generate static electricity, which seriously affects the wearer's sense of experience. In order to solve this problem, electrostatic discharge and wear-resistant EVA foam materials are usually used as the midsole and outsole of sports shoes to solve the above problems, but the current In order to meet certain wear-resisting requirements, the EVA foam material used for shoe soles is generally made of higher hardness, higher density, and poor cushioning and rebound performance.

At present, the wear-resistant EVA foam materials that are common in the market are hard in texture, the rebound is generally about 40%, and the fatigue resistance is poor. After wearing for a period of time, there will be problems such as poor recovery such as collapse. The material has good electrostatic discharge performance and a large amount of conductive carbon black is added, which significantly increases the weight of the sole, and at the same time, also significantly increases the hardness, which affects the wearing comfort of the wearer.

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