Sponge rubber of cold-resistant microporous structure and preparation method thereof

Abstract

The invention provides sponge rubber of a cold-resistant microporous structure, relates to the field of sponge rubber, and aims at solving the problems of poor quality and high production cost of a shoe prepared by the sponge rubber in the prior art. The sponge rubber is prepared from the following ingredients in parts by weight: 50kg of styrene-butadiene rubber, 30kg of natural rubber, 20kg of ethylene-vinyl acetate copolymers, 40kg of engine oil, 65kg of calcium carbonate, 35kg of high-wear-resistant carbon black, 5kg of zinc oxide, 1.2kg of stearic acid, 2kg of sulphur, 1.5kg of accelerators DM, 0.2kg of accelerators D, 4kg of foaming agents AC, 1kg of anti-oxidizing agents BHT and 1kg of plasticizers. The styrene-butadiene rubber, the ethylene-vinyl acetate copolymers and the natural rubber are assisted with proper additives, the rubber material is enabled to have good plasticity, uniform hole forming speed and vulcanization speed, and uniform air holes, so that the sponge rubber with high quality and stability is obtained; a finished product with higher qualification rate can be prepared; the production cost is reduced.

Description

technical field [0001] The invention relates to the field of sponge rubber, in particular to a cold-resistant microporous sponge rubber and a preparation method thereof. Background technique [0002] In the production process of shoes, in order to improve the wearing experience and comfort of the wearer, sponge rubber is used as the shoe material; and sponge rubber is a kind of low density, excellent elasticity and flexibility, and has good shock absorption, Vulcanized rubber with a sponge-like porous structure for thermal insulation properties. [0003] At present, the Chinese invention patent with the notification number CN1830344B discloses a midsole for antibacterial sponge rubber shoes and a production method thereof. 1. The antibacterial agent is made by kneading, vulcanization, and foaming. The hardness of the midsole for shoes is 45-55, the resilience is 50-55%, the compression set is 5-15%, and the apparent density is 0.7-0.8. The antibacterial width of the midsol...

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Problems solved by technology

[0004] Though this invention has higher antibacterial property, can obviously eliminate stink, use the rubber shoes made of the present invention to have advantages such as wearing hygiene, lighten weight, delay elastic, but, when this invention utilizes natural rubber foaming to produce sponge rubber, Because natural rubber is unsaturated rubber, it is prone to various side reactions, resulting in poor dimensional stability, many pores and bubbles, and large shrinkage in the later stage of the product, which makes it difficult for sponge rubber to obtain stable quality and high production costs.

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