Coupling dispersant for rubber

Abstract

The invention discloses a coupling dispersant for rubber. The coupling dispersant consists of the following raw materials in parts by weight: 10-20 parts of polyethylene glycol borate, 10-20 parts of stearic acid, 25-35 parts of monostearin, 15-25 parts of light calcium and 15-25 parts of zinc stearate. The coupling dispersant has the characteristics of small dosage, wide application range and the like, is applied to the mixing process of natural rubber and synthetic rubber and can improve the dispersity of filler and other powder aids in a sizing material, reduce the viscosity of the sizing material and increase the fluidity and extrusion rate of the sizing material so as to reduce the energy consumption of tire or product processing and increase the mixing efficiency; moreover, the demoulding of vulcanized products is promoted, the mould is kept clean, and the processing safety, physical and mechanical properties and vulcanization speed of the rubber sizing material can be improved; and through the application test comparison, the sizing material prepared by adding the coupling dispersant for rubber, disclosed by the invention, is superior to the same kind of products on the market in terms of processing safety, physical and mechanical properties and vulcanization speed.

Description

technical field [0001] The invention belongs to the technical field of rubber chemical industry, and in particular relates to a coupling dispersant for rubber. Background technique [0002] In the production process of rubber products, in order to improve the mechanical strength and wear resistance of tires, it is necessary to add a certain amount of carbon black in the mixing of rubber materials. Carbon black is a reinforcing material for rubber, which can improve the reinforcing performance of tires. Reduce the wear coefficient of tires. Due to the particularity of the surface properties of carbon black, it is difficult to disperse in the mixing of rubber materials, and the dispersion is uneven, which affects the mechanical properties. In order to solve the above problems in the production of rubber products, carbon black dispersants need to be added. Although the existing carbon black dispersants can improve the dispersibility of carbon black to a certain extent, most of ...

AI Technical Summary

Problems solved by technology

[0002] In the production process of rubber products, in order to improve the mechanical strength and wear resistance of tires, it is necessary to add a certain amount of carbon black in the mixing of rubber materials. Carbon black is a reinforcing material for rubber, which can improve the reinforcing performance of tires. Reduce the wear coefficient of tires. Due to the particularity of the surface properties of carbon black, it is difficult to disperse in the mixing of rubber materials, and the dispersion is uneven, which affects the mechanical properties. In order to solve the above problems in the production of rubber products, carbon black dispersants need to be added. Although the existing carbon black dispersants can improve the dispersibility of carbon black to a certain extent, most of the carbon black dispersants Due to its poor fluidity, the carbon black does not meet the technical requirements of the user, and the dispersion of carbon black in the rubber compound is not uniform enough. At present, the only way to strengthen the carbon black is to increase the number of dispersants and prolong the mixing time of the rubber. The degree of dispersion in the compound rubber, but the Mooney viscosity of the compound will be larger if the mixing time is prolonged, and the extrusion rate of the compound will be lower, resulting in waste of rubber and increased production costs.