Praseodymium-based multi-ligand vulkacit and preparation method thereof

Abstract

The invention discloses a praseodymium-based multi-ligand vulkacit and a preparation method thereof. During synthesis, the rare earth element praseodymium and four ligands are adopted, wherein the ligands (I and II) are promoter groups of favorable sulfidation promotion effects; the ligand III is methacrylic acid which can improve the solubleness of the vulkacit in a sizing material; the ligand IV is phenanthroline which can form powerful complexation with the rare earth element. The preparation method is simple, convenient and feasible; adoption of an inert gas for protection is avoided; the preparation process is mild in conditions; no harmful gas is generated. The praseodymium-based multi-ligand vulkacit has favorable solubleness in rubber, is long in sulfidization scorch time, good in vulcanization curve flatness, nontoxic, odor-less and pollution-free, can replace the system which is frequently used at present and adopt zinc oxide, stearic acid and a promoter, and is applied to high-performance tires and other rubber products.

Description

technical field [0001] The invention relates to a synthesis method of a praseodymium-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 ac...

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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