Method for preparing rubber reinforcing agent

Abstract

The invention discloses a method for preparing a rubber reinforcing agent, which comprises the following steps of: combusting and refining dried rice hulls, mixing the rice hulls and a silane coupling agent in a certain ratio, adding the mixture into a high-temperature mixing machine and performing surface active treatment to obtain a product. Due to the adoption of the rubber reinforcing agent, carbon black used in the production of butyl inner tubes is replaced, the use of petrochemical resources is reduced, and the damage to an environment is reduced, so the rubber reinforcing agent is energy-saving and environment-friendly, and is a new material; and by the rubber reinforcing agent, the stretchability of the inner tubes is improved greatly, the strength is improved, the air permeability is reduced, the rolling resistance is reduced, the wet-skidding resistant performance is improved, and the service life of the inner tubes is prolonged, so the rubber reinforcing agent is suitable for manufacturing environment-friendly tires, and has a good application prospect.

Description

technical field [0001] The invention relates to a preparation method of a rubber reinforcing agent, which belongs to the field of rubber fillers. Background technique [0002] Because butyl rubber has lower unsaturation than general-purpose rubber, it has a lower affinity for carbon black, so butyl rubber requires longer mixing time and higher shear force for better dispersion. Due to the different surface area of ​​carbon black, its affinity with butyl rubber is not the same, so when mixing two different types of carbon black, proper mixing must be carried out. The larger the surface area of ​​carbon black, the higher the purity of the vulcanized rubber it improves. Good, but more difficult to disperse in butyl. If the dispersion of the above-mentioned carbon black is not uniform, problems such as porous extrusion but air bubbles in the vulcanizate may arise. [0003] The traditional butyl inner tube production process is: butyl rubber, butyl reclaimed rubber, carbon blac...

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

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