Pre-dispersed master batch particle for rubber foaming and preparation method of pre-dispersed master batch particle

Abstract

The invention discloses a pre-dispersed master batch particle for rubber foaming and a preparation method of the pre-dispersed master batch particle. The pre-dispersed master batch particle comprises, by weight, 30-50 parts of azodicarbonamide, 20-30 parts of N, N'-dinitrosopentamethylene tetraamine, 1-3 parts of dicyanamide, 3-10 parts of coupling agents, 3-10 parts of inorganic fillers, 5-10 parts of softening oil, 2-5 parts of processing agents and 5-40 parts of ethylene propylene diene monomer rubber. By the preparation method of the pre-dispersed master batch particle, dispersity of active components is improved, the master batch particle is uniformly discharged, the surface of the particle is smooth, the master batch particle has fine processing performance and is used for preparing rubber materials, and the foaming effect of the rubber materials is improved.

Description

technical field [0001] The invention relates to a rubber additive and a preparation method thereof, in particular to a pre-dispersed masterbatch used for rubber foaming and a preparation method thereof. Background technique [0002] Rubber additives mainly include rubber accelerators, vulcanization activators, antioxidants, processing aids and other special functional rubber additives. In recent years, with the development of rubber additives industry, in order to eliminate the chemical smog and dust pollution problems in the rubber processing process, one of the important directions for the development of additives is product compounding and master batching. Pre-dispersed powdered chemical additives in a certain bonding system by special means, and then granulated, the additive masterbatch made can be used to replace traditional powdered additives, improve the operating environment, improve product quality, and thus help After the agent is granulated, it can play a role of...

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Problems solved by technology

[0005] Both of the above two patents involve the improvement of the formulation of the pre-dispersed masterbatch to increase the vulcanization activity of the rubber, but both fail to involve the combination of dual-active foaming components and foaming accelerators to improve the foaming performance of the compound. It also failed to use coupling agent and ultra-fine filler to improve the mechanical properties of rubber and improve the viscous flow during the mixing process.