Preparation method of precipitated white carbon black for high-performance truck tire

Abstract

The invention discloses a preparation method of precipitated white carbon black for a high-performance truck tire, wherein composite reaction modification is carried out on superfine sodium aluminosilicate and silicon dioxide to prepare high-wear-resistance composite silicon dioxide. The preparation method comprises the following steps: firstly, respectively carrying out reactions A and B in two reaction kettles, namely reacting water, silicate and an acidifying agent in the reaction A to obtain a silicon dioxide suspension, and reacting water, silicate, an aluminum compound and an acidifying agent in the reaction B to obtain a superfine sodium aluminosilicate suspension; then feeding the superfine sodium aluminosilicate suspension obtained through the reaction in the step B into the silicon dioxide suspension obtained through the reaction in the step A, wherein the mixing volume ratio of the superfine sodium aluminosilicate suspension to the silicon dioxide suspension is 1:10-1:2, so as to prepare the superfine sodium aluminosilicate composite high-wear-resistance white carbon black slurry; and filtering the slurry, performing flash drying or spray drying to obtain a powdery or microbead-shaped white carbon black product, and finally briquetting the white carbon black to obtain a granular high-wear-resistance composite silicon dioxide product. The white carbon black has good compatibility in rubber, and the prepared tire product has low rolling resistance and high control performance and wear resistance.

Description

technical field [0001] The invention relates to a preparation method of inorganic chemical product white carbon black, in particular to a preparation method of precipitation method white carbon black for high-performance truck tires. Background technique [0002] Precipitated hydrated silica, also known as white carbon black, has a flocculent and network structure in its microstructure. The special structure of silica makes it have unique properties, and it is widely used in various fields such as rubber, silicone rubber, paint, heat insulation materials, insulating materials, inks and advanced daily cosmetics. In 1992, Michelin proposed the concept of "green tires", and silica was used in the rubber formula of tires. Silica, as a substitute for carbon black, has a very good reinforcing effect. After adding rubber tires, it can reduce heat generation and rolling resistance, etc., and can maintain the wet skid resistance and wear resistance of tires, reducing The fuel consu...

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Problems solved by technology

But because the white carbon black product that prior art produces, its surface hydroxyl is more, causes the interaction between white carbon black and rubber to be smaller than the interaction between carbon black and rubber, and the reinforcing performance of white carbon black to rubber It is not as good as carbon black; if the amount of silica used in the tread rubber of all-steel radial truck tires is too large, the tire driving performance will not meet the requirements, mainly reflected in the decrease of tire wear resistance, thereby shortening the service life of the tire

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