A kind of holmium-based multi-ligand vulcanization accelerator and preparation method thereof

Abstract

The invention discloses a holmium-based multiple-ligand vulcanization accelerator and a preparation method thereof. A rare earth element in synthesis is holmium comprising four ligands, wherein the ligands 1 and 2 are accelerator groups having excellent vulcanizing and accelerating effects, the ligand 3 is alpha-methylacrylic acid capable of forming strong ligands together with the rare earth element, and the ligand 4 is octadecanoic acid capable of improving the solubility of the accelerator in a sizing material. The method is simple, convenient and easy, and does not require protection of inert gas, conditions during the preparation process are moderate, and no harmful gases can be generated. The multiple-ligand rare earth vulcanization accelerator has a good solubility in rubber, the vulcanizing and scorching time is long, the vulcanization curve is excellent in flatness, and toxin, odour and pollution are avoided. The accelerator can replace a conventionally used zinc oxide, octadecanoic acid and accelerator combined-use system and can be applied to high-performance tires and other rubber products.

Description

technical field [0001] The invention relates to a synthesis method of a holmium-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 acceler...

AI Technical Summary

Problems solved by technology

This kind of accelerator effectively improves the disadvantage of poor solubility in rubber of traditional vulcanization accelerator systems, simplifies the feeding process, and is clean and pollution-free

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