Introduction to the concept and role of white carbon black dispersant

Introduction to the concept and role of white carbon black dispersant

Although the new coupling agent can effectively reduce the interaction between the filler and the filler, significantly improve the performance of the rubber and improve the quality of the finished tire, the processing of the silica composite is still very good compared to the conventional carbon black compound. difficult. Because the silane coupling agent can effectively reduce the interaction between the fillers, it also increases the interaction between the polymer and the filler. Therefore, people add white carbon black dispersant to the white carbon black compound. As a processing aid, white carbon black dispersant is mainly prepared from zinc soap ester and surfactant. The special structure of zinc soap has good compatibility with rubber and can reduce frosting; the special structure of ester can improve the dispersibility of white carbon black in the rubber compound, has good lubricating effect, and helps to improve the flow of rubber compound. Sex. Esters which have a weak basicity are generally selected.

The role of the silica black dispersant is mainly to improve the processing properties of the rubber compound. The addition of dispersant can greatly improve the mixing efficiency of the rubber compound. When the amount of coupling agent is small, the interaction between the fillers can be effectively reduced, and the Mooney viscosity of the rubber compound can be significantly reduced. Black quickly mixes in, improves the degree of dispersion and uniformity of silica in the rubber compound, and can increase the dispersion of silica in the rubber compound by one or more grades, and can process the semi-finished products of the physical properties of the rubber compound. The finished product has good molding properties.