Crack-resistant rubber sole and production method thereof

Abstract

The invention provides a crack-resistant rubber sole. The crack-resistant rubber sole is produced from, by weight, 45-80 parts of a rubber matrix, 5-45 parts of white carbon black, 3-5 parts of zinc oxide, 0.2-1.5 parts of a lubricant, 1.5-3 parts of a white smoke activator, 0-1.5 parts of a p-phenylenediamine antioxidant, 0.4-1.2 parts of rubber protecting wax, 0.5-4 parts of a thiourea antioxidant, 0-1.5 parts of a phenolic antioxidant, 0.7-1.5 parts of insoluble sulfur, 0.5-2 parts of a rubber vulcanization accelerator and 0-17.5 parts of a functional assistant; and the thiourea antioxidantis one or more of di-n-octyl thiourea, di-n-butyl thiourea, tributyl thiourea, dialkyl thiourea, difurfuryl thiourea, 2-imidazolidinethione and diethylthiourea. The crack-resistant rubber sole can effectively solve the problems of cracking, caused by lasting mechanical stress generated by lamination of the rubber sole, and flex cracking, also can solve the problem of poor adhesion of traditionalrubber soles to an EVA midsole, and can meet the requirements for basic physical properties of shoe materials.

Description

technical field [0001] The invention relates to the technical field of polymer materials, and more specifically relates to a crack-resistant rubber sole and a preparation method thereof. Background technique [0002] Rubber soles are made by mixing natural rubber, synthetic rubber and other additives. At present, they can achieve the wear-resistant and anti-skid effects required by shoe outsoles. However, with the intensification of competition in the industry and the diversification of finished shoe designs, the problem of cracking of rubber soles came up unexpectedly. Specifically, due to the industry competition of finished shoes, the rubber content of rubber soles is getting lower and lower, while the content of inorganic fillers is getting higher and higher, which inevitably leads to poor crack resistance of the soles. On the other hand, with the diversification of the shape design requirements of finished shoes, the fitting of rubber soles and EVA midsoles has gradual...

AI Technical Summary

Problems solved by technology

[0005] In view of this, the object of the present invention is to provide an anti-crack rubber sole and a preparation method thereof. The anti-crack rubber sole provided by the present invention can effectively solve the problem of rubber soles due to lamination on the basis that the basic physical properties meet the shoe material requirements. The problem of cracking and flexing cracking caused by the long-lasting mechanical stress can also solve the problem of poor fit between traditional rubber soles and EVA midsoles.

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