Waste rubber regeneration mixed stock preparation method

Abstract

The invention relates to a waste rubber regeneration mixed stock preparation method. The method comprises the following steps: vulcanizate powder recovered by the waste and old tire is subjected to electromagnetic heating for preliminary preheating, the material is processed by a plasticizing machine and the material is cooled to obtain hemihydrate rubber powder, then micelle is subjected to microwave heating for preliminary preheating, then is processed with strong shearing effect by a screw extruder, the material is cooled to obtain the over-desulphurized micelle, finally the hemihydrate rubber powder, the over-desulphurized micelle, and the vulcanized rubber powder are subjected to preheating according to a certain proportion, the materials are mixed uniformly and is transported to a birotor continuous mixing roll for mixing, a mixture is cooled and filtered, and is subjected to the extrusion moulding to obtain the waste rubber regeneration mixed stock. The hemihydrate rubber powder, the over-desulphurized micelle, and the vulcanized rubber powder are mixed and subjected to extrusion moulding according to certain proportion, advantages of the materials are fully performed, the defects of non-full heating regeneration of a traditional plasticizing machine and easy over-desulphurization of machinery shearing by the screw extruder in the waste and old rubber traditional plasticizing machines can be solved, no chemical auxiliary agent is required during the production process, the production process is continuous and environmentally friendly, and the product is environmentally friendly, and each performance index is excellent.

Description

Technical field: [0001] The invention relates to the technical field of rubber recycling, and mainly relates to a preparation method of waste rubber reclaimed mixed rubber. Background technique: [0002] With the rapid development of the rubber industry, a large amount of waste rubber is produced due to its insoluble three-dimensional cross-linked network structure, which causes a variety of environmental problems and causes "black pollution". The high-value utilization of Weibao is imminent. [0003] In my country, the treatment method of waste rubber is mainly to destroy the three-dimensional network structure of vulcanized rubber to make recycled rubber through desulfurization technology. Completed, resulting in serious environmental problems, thus seriously restricting the development of the recycled rubber industry. In order to break through this limitation, domestic research and promotion of environmentally friendly sulfur-cutting and regeneration methods such as ther...

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Problems solved by technology

[0005] The purpose of the present invention is to make up for the defects of the prior art, and to provide a method for preparing waste rubber regenerated mixed rubber, so as to solve the problems in the physical and mechanical shear regeneration of waste rubber in the prior art, which is difficult to control and realize the maximum destruction of sulfur-containing rubber. bond, and keep the main chain structure of carbon-carbon bond from being destroyed to get close to the defect of raw rubber performance

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