A kind of antistatic EVA sole and preparation method thereof

Abstract

The invention relates to the technical field of organic high-molecular compounds, and provides an antistatic EVA (Ethylene Vinyl Acetate) shoe sole and a preparation method thereof. Antistatic EVA particles are prepared from raw material EVA, a thermoplastic elastomer, a polyamide copolymer, a foaming agent, a cross-linking agent, an antistatic agent, nano-zinc oxide, zinc stearate, stearic acid, an anti-wear agent and talcum powder through smelting, open milling and pelleting, and then the antistatic EVA shoe sole is prepared from the antistatic EVA particles through temperature rise foaming and secondary oil pressure forming. The electrical resistivity of the antistatic EVA shoe sole is smaller than 1 megohm, and the antistatic EVA shoe sole can be permanently antistatic and is not influenced by a damp environment; moreover, the antistatic EVA shoe sole has the characteristics of light weight, good hand feeling, high dimensional stability, good comprehensive mechanical property and the like, is particularly suitable for being used in places with high antistatic requirement such as manufacturing shops and high-grade test rooms in the microelectronics industry, and is light, comfortable and long in service life.

Description

technical field [0001] The invention belongs to the technical field of organic polymer compounds, in particular to an antistatic EVA shoe sole and a preparation method thereof. Background technique [0002] Polymer materials are insulating, and it is easy to form charge migration during friction, resulting in static electricity, which is very harmful, especially in the production workshops and advanced laboratories of the microelectronics industry, must wear clothing that can eliminate static electricity from the human body. Anti-static shoes. Antistatic EVA shoes, which are light, comfortable, highly elastic, non-deformable, and stable in antistatic performance, are gradually recognized by people. [0003] Patent CN 103450545 A has reported that in the EVA shoe sole, the alkylphenol polyoxyethylene ether liquid antistatic agent with poor biodegradability is added, and the EVA shoe sole made has the characteristics of low resistivity, light weight, and low price, but it is ...

AI Technical Summary

Problems solved by technology

[0003] Patent CN 103450545 A has reported that in the EVA shoe sole, the alkylphenol polyoxyethylene ether liquid antistatic agent with poor biodegradability is added, and the EVA shoe sole made has the characteristics of low resistivity, light weight, and low price, but it is not environmentally friendly. and regions have restricted their use

Patent CN 1039101024 A discloses a permanent antistatic EVA material, which can maintain very high stability in low temperature and high temperature environments, and is not prone to aging. Its antistatic performance depends on conductive carbon black, and the carbon black structure is susceptible to The shear force damage during processing and poor dispersion in the matrix will significantly weaken the mechanical properties of the matrix material. More importantly, adding conductive carbon black can only produce black products, and the product is single, which cannot meet people's color needs.