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Method for reproducing rubber from waste and old chloroprene rubber adhesive product by decomposition method

A technology of reclaimed rubber and neoprene, applied in the chemical industry, can solve the problems of long processing time, poor performance of reclaimed rubber, secondary pollution, etc., meet the requirements of physical and chemical indicators, and meet the effect of repeated recycling

Inactive Publication Date: 2008-08-27
SHANGHAI XIAOYOU RUBBER +2
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Problems solved by technology

[0003] The purpose of the present invention is to provide a method for regenerating rubber from waste neoprene products by decomposition method. The method for regenerating rubber from waste neoprene products by decomposition method should solve the problem of waste disposal in the prior art. Rubber neoprene products have technical problems such as complex process, long processing time, poor performance of reclaimed rubber, secondary pollution, and strong odor

Method used

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Embodiment Construction

[0012] In one embodiment of the present invention, 1 ton of waste neoprene products is weighed, and the waste neoprene products are crushed with a rubber crusher. The diameter of the crushed particles is less than 30 mesh, and then separated from the air separator by a vibrating screen Impurities, the pulverized rubber granules after separating impurities are put into a container, then take by weighing 150KG rubber grease decomposing agent, the rubber granules of pulverizing and rubber grease decomposing agent are evenly stirred, mixed, add 200 kilograms of desulfurizing agents in the container, Pressurize the pressure in the container to 15-18 kg per square meter, heat to 200-240°C, and place it for 2.5-3.5 hours under the condition of maintaining pressure and temperature, including a waste gas recovery step and a mechanical desulfurization step , and a mechanical tableting step to finally obtain neoprene reclaimed rubber.

[0013] Further, in the step of waste gas recovery, ...

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Abstract

A process regenerates rubber from waste chloroprene rubber adhesive products through utilizing the decomposition method, which comprises the steps of disintegrating waster chloroprene rubber adhesive products with a rubber crusher, and separating foreign matter, wherein foreign matter is separated through adopting a shaking screen and an air separator, disintegrated rubber particles which are removed with foreign matter are putted into a container, and are evenly stirred and mixed with rubber fat-splitting agent, desulfurizing dynamically, wherein the container is pressurized and heated in the step of dynamic desulfurization, and is placed for 2.5-3.5 hours under the condition of keeping pressure and temperature, and recovering waste gas, mechanically desulfurizing and conducting mechanical tableting, and finally obtaining chloroprene regenerating rubber. The chloroprene regenerating rubber which is produced through adopting the process has no peculiar smell and no pollution to environment in the production process, and can meet the repeated regenerating usage of rubber.

Description

Technical field: [0001] The invention relates to the field of chemical industry, in particular to a method for processing rubber, in particular to a method for regenerating rubber from waste neoprene products by using a decomposition method. Background technique: [0002] Neoprene is used in more and more fields, and more and more waste neoprene products are also produced. Due to the non-renewable utilization of rubber, the situation of international shortage of rubber resources has been caused, which has attracted great attention from various countries. At the same time, waste rubber has also brought serious environmental pollution to human society. Traditional rubber vulcanization is to form a covalent cross-linking network between rubber molecular chains. The covalent cross-linking bonds formed are irreversible. Rubber loses thermoplasticity after vulcanization, so it is very difficult to reprocess waste products and scraps. Desulfurization and regeneration of rubber pow...

Claims

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Application Information

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IPC IPC(8): C08J11/10C08L17/00B29B17/00
CPCY02W30/62
Inventor 肖平忠吴吉
Owner SHANGHAI XIAOYOU RUBBER
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