A kind of white carbon black/natural rubber composite material preparation method

Abstract

The invention belongs to the technical field of natural rubber wet mixing, and relates to a preparation method of white carbon black / natural rubber composite material, which uses a wet mixing process to prepare white carbon black into a uniform dispersion solution through mechanical grinding, and mixes with natural latex After mixing, stir at a slow speed to fully contact the natural rubber latex and white carbon black, use the positive charge generated by the high-temperature atomization method to flocculate the negatively charged natural rubber latex, wrap the white carbon black in it, and make white carbon black after dehydration and drying. The innovation of carbon black / natural rubber composite material lies in: First, adding other rubber additives in the formula except filler and latex together to realize the premixing of the materials in the formula, which is convenient for later processing and reduces mixing time and mixing time. Second, the processing method is continuous, and the prepared masterbatch is put into the continuous mixer to realize continuous production.

Description

Technical field: [0001] The invention belongs to the technical field of natural rubber wet mixing, and relates to a continuous preparation method of white carbon black / natural rubber composite material, which has the advantages of environmental protection and low energy consumption, can shorten the production cycle, and makes white carbon black in natural rubber It achieves micro-dispersion and improves the performance of rubber. Background technique: [0002] Mixing is the most critical process in the processing of rubber products. The purpose is to fully mix the rubber additives in the formula with the rubber, and to disperse the rubber additives as evenly as possible. Rather than saying that the quality of the mixing result directly determines the rubber The performance and service life of the product, rather than the degree of dispersion and distribution of rubber additives in rubber determine the performance and service life of rubber products, so how to improve the dis...

AI Technical Summary

Problems solved by technology

The study found that although the wet mixing process can improve the microscopic dispersion of fillers, because the flocculation and drying methods are mostly chemical means such as acid flocculation, it will affect the performance of rubber products.

The acidic flocculation method has irreversible defects, which will not only affect the health of the operators, but also corrode the equipment. The long-term drying after flocculation is likely to produce acid gas that affects the environment. If the strong acid is not cleaned, it will also affect the subsequent vulcanization time, and , in the acidic environment, the vulcanization time of the rubber compound will produce hysteresis, which will easily cause overvulcanization and affect the performance of rubber products.

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