Paste-like reclaimed rubber with black carbon filling and preparation method

Abstract

The invention relates to a filing carbon black paste shaped regeneration rubber and a preparation method thereof, relating to a paste shaped regeneration rubber and the preparation method thereof. The method can not only cuts off later period of processing technology of kneading, refining, etc. in production technology of regeneration rubber, but also when in processing the rubber and mixing unvulcanized rubber avoids adding soot carbon and reduces environmental pollution and improves physical mechanical performance of the rubber products. Waste vulcanized rubber powder of 20 to 50 item are used as 100 of basic amount and each component weight ratio is 50 to 90 fuel oil, 8 to 20 solid coumarone, 2 to 5 phthalic anhydride, 0.1 to 1 hydroxyphenol, and 60 to 100 carbon soot. The waste vulcanized rubber powder is added into a depolymerizer, and then the fuel oil, the solid coumarone, the phthalic anhydride, and the hydroxyphenol are added, then stirring is carried out with the speed of 10to 50 revolutions per minute under temperature of 160 to 200 DEG C, and pressure of 0.5 to 0.7 Mpa, after reaction is carried out for 2 to 3 hours and the temperature is reduced to 100 to 150 DEG C; the carbon soot is added for 3 to 5 times for 30 to 60 minutes and the stirring is carried on with the speed of 200 revolutions per minute for 0.5 to 2 minutes, then the temperature reduction and material discharging are carried out. The invention is used for the production of rubber products, thus recycling and utilizing waste old rubber.

Description

Technical field: [0001] The invention relates to a paste-like regenerated rubber and a production method thereof. In particular, a paste-like regenerated rubber filled with carbon black and a preparation method thereof. Background technique: [0002] Carrying out the recycling of waste rubber resources is one of the major measures to implement sustainable development and ensure economic growth; it is an important way to turn waste into wealth, turn harm into profit, prevent waste rubber pollution, and protect the environment. [0003] my country is a big country that consumes rubber. Reclaimed rubber and waste rubber powder, as supplementary resources of rubber, are one of the indispensable main raw materials for my country's rubber industry. [0004] In order to comprehensively utilize waste rubber, the application of paste regenerated rubber has been introduced into the rubber industry. Paste-like regenerated rubber is produced by thermally depolymerizing and dissolving ...

AI Technical Summary

Problems solved by technology

The increase in the specific surface area of ​​carbon black will increase the energy consumption during mixing, and at the same time, the heat released when rolling the rubber will increase, resulting in a decrease in the elastic properties of the vulcanized rubber.

Therefore, the particle size of carbon black used in the rubber industry is generally between 11-500nm. The particle size is small and the weight is light, resulting in serious pollution when rolling the rubber. Even if some companies use internal mixers for mixing, or install Dust collection device, the pollution problem has not yet been completely resolved

[0007] At present, in the use of paste regenerated rubber, carbon black is added as a reinforcing agent when mixing paste regenerated rubber and raw rubber. Due to the small particle size and light weight of carbon black particles, there is flying pollution of carbon black during mixing. question

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