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

A vulcanization accelerator and multi-ligand technology, which is applied in the synthesis field of europium-based multi-ligand vulcanization accelerators, can solve problems such as poor solubility, and achieve the effects of simplifying the process, simplifying the feeding process, and achieving a remarkable vulcanization acceleration effect.

Active Publication Date: 2016-01-20
BEIJING UNIV OF CHEM TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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

Method used

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  • A kind of preparation method of europium-based multi-ligand vulcanization accelerator
  • A kind of preparation method of europium-based multi-ligand vulcanization accelerator
  • A kind of preparation method of europium-based multi-ligand vulcanization accelerator

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Experimental program
Comparison scheme
Effect test

Embodiment 1

[0043] The preparation method of accelerator:

[0044] 0.01molEuCl 3 Dissolve in absolute ethanol at 60°C, dissolve 0.02mol N-cyclohexyl-2-benzothiazole sulfenamide in absolute ethanol solution at 60°C, dissolve 0.01mol citric acid in absolute ethanol at 60°C in solution. Fully mix the ethanol solution of N-cyclohexyl-2-benzothiazole sulfenamide and the ethanol solution of citric acid to obtain a mixed solution. Then the above mixed solution was added dropwise to EuCl 3 in anhydrous ethanol solution, stirred in an oil bath at 80°C for 6h and filtered, and the precipitate was washed with anhydrous ethanol, and placed in CaCl 2 Dry in a desiccant desiccator at 20°C to constant mass to obtain a light yellow powder, the target product EuA 2 B 0 C 0 D. 1 .

Embodiment 2

[0046] The preparation method of accelerator:

[0047] 0.01molEuCl 3 Dissolve in absolute ethanol at 60°C, dissolve 0.0001mol N-cyclohexyl-2-benzothiazole sulfenamide in absolute ethanol solution at 60°C, dissolve 0.02mol potassium ethyl xanthate in 60°C 0.03mol stearic acid is dissolved in the absolute ethanol solution of 60 ℃. Fully mix the ethanol solution of N-cyclohexyl-2-benzothiazole sulfenamide, the ethanol solution of potassium ethyl xanthate and the ethanol solution of stearic acid to obtain a mixed solution. Then the above mixed solution was added dropwise to EuCl 3 in anhydrous ethanol solution, stirred in an oil bath at 80°C for 6h and filtered, and the precipitate was washed with anhydrous ethanol, and placed in CaCl 2Dry in a desiccant desiccator at 20°C to constant mass to obtain a yellow powder, which is the target EuA 0.01 B 2 C 3 D. 0 .

Embodiment 3

[0049] The preparation method of accelerator:

[0050] 0.01molEuCl 3 Dissolve in absolute ethanol at 60°C, dissolve 0.01mol N-cyclohexyl-2-benzothiazole sulfenamide in absolute ethanol solution at 60°C, dissolve 0.01mol potassium ethyl xanthate in 60°C 0.015mol stearic acid was dissolved in the absolute ethanol solution at 60°C, and 0.005mol citric acid was dissolved in the absolute ethanol solution at 60°C. Fully mix the ethanol solution of N-cyclohexyl-2-benzothiazole sulfenamide, the ethanol solution of potassium ethyl xanthate, the ethanol solution of stearic acid and the ethanol solution of citric acid to obtain a mixed solution. Then the above mixed solution was added dropwise to EuCl 3 in anhydrous ethanol solution, stirred in an oil bath at 80°C for 6h and filtered, and the precipitate was washed with anhydrous ethanol, and placed in CaCl 2 Dry in a desiccant desiccator at 20°C to constant mass to obtain a yellow powder, the target product EuA 1 B 1 C 1.5 D. 0.5...

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Abstract

The invention discloses a europium-base multiple-ligand vulcanizing accelerator and a preparing method thereof. Europium is the rare earth element in synthesis, and 4 kinds of ligands are included, wherein the ligands 1 and 2 are accelerator groups with excellent vulcanizing acceleration effects, the ligand 3 is stearic acid improving solubleness of the accelerator in a rubber material, and the ligand 4 is citric acid forming strong coordination with the rare earth element. The method is simple and feasible, requires no protection of inert gases, is mild in the preparation condition and generates no harmful gas; the multiple-ligand rare earth vulcanizing accelerator has excellent solubleness in rubber, the vulcanization and scorch time is long, the vulcanization curve is excellent in flatness, and no toxicity, odor or pollution is generated; the accelerator substituting the conventional frequently used system adopting zinc oxide, stearic acid and accelerator together can be applied to high-performance tires and other rubber products.

Description

technical field [0001] The invention relates to a synthesis method of a europium-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 accele...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C08K5/00C07F5/00C08L9/06
Inventor 刘力杜一诗摆音娜刘杰民胡水温世鹏
Owner BEIJING UNIV OF CHEM TECH
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