Preparation method of rubber active agent

Abstract

The invention discloses a preparation method of a rubber active agent. The method mainly comprises the steps of: burning and refining dried rice hulls, mixing the rice hulls with calcinated kaolin and a silane coupling agent proportionally, and putting the mixture into a high temperature mixing machine for a surface bioactive treatment, thus obtaining a product. According to the invention, the use of zinc oxide in butyl tire tube production is substituted, the use of petrochemical resources can be reduced and the harm to the environment is also reduced, thus achieving energy conservation and environmental protection. Therefore, the rubber active agent of the invention is an environmental friendly novel material, which both speeds up vulcanization and improves the vulcanization degree, thus serving as a reinforcing agent and a coloring agent.

Description

Technical field [0001] The invention relates to a preparation method of a rubber active agent, belonging to the field of rubber fillers. Background technique [0002] Since the unsaturation of butyl rubber is lower than that of general-purpose rubber, it has a lower affinity for carbon black. Therefore, butyl rubber requires a longer mixing time and higher shear force for better dispersion. Because the surface area of ​​carbon black is different, its affinity with butyl rubber is different. Therefore, when two different types of carbon black are combined, proper mixing must be carried out. The larger the surface area of ​​carbon black, the higher the purity of the vulcanized rubber. Good, but the more difficult it is to disperse in butyl rubber. If the above-mentioned carbon black is not uniformly dispersed, problems such as porous extrusion but bubbles in the vulcanized rubber will occur. [0003] The traditional butyl inner tube production process is: butyl rubber, butyl reclai...

AI Technical Summary

Problems solved by technology

The ML of butyl reclaimed rubber is 49-55. If it goes through a long time of banburying at 175°C, its ML value will drop rapidly. If it does not reach 175°C, the ML value of butyl rubber will be too high, which will easily cause mixing. The quality problem of unstable rubber mixing ML has a great impact on the production of the later stage

[0005] (2) The working efficiency is low. The blanking temperature of the mixed rubber is 175°C. It takes 8-10 minutes to cool down to below 80°C. It is difficult to control the loss of vulcanized and accelerated fine materials within 3 / 1000

About 16,000 yuan / ton, the price is expensive, but many products do not meet environmental protection requirements