A kind of preparation method of lanthanum-based multi-ligand vulcanization accelerator

Abstract

The invention discloses a lanthanum-base multiple-ligand vulcanization accelerant and a preparation method thereof. The rare earth element in synthesis is cerium element which contains 4 ligands; the ligand 1 and the ligand 2 are accelerant groups with favorable vulcanization accelerating effect; the ligand 3 is triethanolamine which can improve the solubility of the accelerant in rubber; the ligand 4 is phenanthroline which can form a strong coordination with the rare element; the preparation method is simple and feasible; inert gas shielding is not needed; conditions in the preparation process are mild; no harmful gas is generated in the preparation process; the multiple-ligand vulcanization accelerant has favorable solubility in rubber; vulcanization scorch time is long; the flatness of vulcanization curve is high; the multiple-ligand vulcanization accelerant is non-toxic, odourless and pollution-free; the accelerant can replace a blending system of zinc oxide, stearic acid and the accelerant; the accelerant can be applicable in high performance tires and other rubber products.

Description

technical field

[0001] The invention relates to a synthesis method of a lanthanum-based multi-ligand vulcanization accelerator and research on its vulcanization acceleration effect. This accelerator does not need zinc oxide and stearic acid as an activator, and has the advantages of saving the feeding process, clean and pollution-free, good vulcanization flatness, and easy to uniformly disperse in rubber. The rubber composite material prepared by using this accelerator has the advantages of Good performance uniformity. Background technique

[0002] The vulcanization system of rubber is a complete vulcanization system composed of accelerators, activators, and vulcanizing agents. Among them, the accelerator is a chemical substance that can shorten the vulcanization time, lower the vulcanization temperature, reduce the amount of vulcanizing agent, and improve and improve the physical and mechanical properties and chemical stability of the vulcanized rubber. Just because accel...

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