Silane-modified white carbon black-carbon black composite filling and preparation method thereof

Abstract

The invention discloses a silane-modified white carbon black-carbon black composite filling and a preparation method thereof. The method is characterized in comprising the following steps of: (1) adding white carbon black which is prepared by means of precipitation and white carbon black which is prepared by means of gas phase into a high-speed mixer according to the weight ratio of 3:1-3:2, slowly and evenly adding silane polysulfide in a spraying way, and gradually heating up at 100-120 DEG C to promote the surface modification reaction to be thoroughly performed; and (2) adding carbon black and mixing for 60-180min according to the weight ratio of the carbon black to the white carbon black which is prepared by means of gas phase and the white carbon black which is prepared by means of precipitation of 1:5-1:10 under the condition of continuous stirring and temperature persevering, and cooling by means of temperature reducing to obtain the silane-modified white carbon black-carbon black composite filling. The silane-modified white carbon black-carbon black composite filling which is prepared by the method improves the dispersibility of the white carbon black which is prepared by means of gas phase in rubber, reduces the charging time of a production field, obviously improves the operation environment, is used for the prescription of a tread rubber of a tire, can obviously reduce the rolling resistance of the tire, and saves the gasoline.

Description

technical field [0001] The invention relates to a silane-modified white carbon black-carbon black nano-scale dual-phase composite filler which can be used for green tires and a preparation method thereof. Background technique [0002] The rapid development of the automobile industry has led to rising oil prices and increasingly serious environmental pollution. Resource depletion and environmental degradation will inevitably lead to unsustainable human lifestyles. Reducing fuel consumption has become a new revolutionary force in the automobile industry. Rolling resistance accounts for 18% to 30% of the resistance that hinders the car from moving forward, and the energy consumption of rolling resistance accounts for 14.4% of fuel consumption, which means that a 30% reduction in rolling resistance can save fuel by 4.5% to 6%. It is reported that the hysteresis loss caused by the tread compound alone accounts for 38.5% of the rolling resistance of the whole tire. This ratio wil...

AI Technical Summary

Problems solved by technology

[0005] Compared with carbon black, white carbon black still has the following disadvantages: it is difficult to mix in the filling compound, which increases the processing cost; there is a delay in vulcanization caused by the compounding agent in the adsorption vulcanization system; the wear and strength of rubber products are slightly lower

Compared with the low-structure bead-like high-dispersion precipitated silica, the fumed silica has a high-structure spherical chain shape, high surface area, small number of surface hydroxyl groups, small bulk density, and serious dust flying. Difficult to disperse in rubber, easy to cause Mooney viscosity to increase and processing performance to deteriorate

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