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Preparation method for lanthanum-base multiple-ligand vulcanization accelerant

A vulcanization accelerator and ligand technology, which is applied in the synthesis field of lanthanum-based multi-ligand vulcanization accelerators, can solve problems such as poor solubility, achieve the effects of simplifying the process, simplifying the feeding process, and improving safety

Active Publication Date: 2014-05-28
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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  • Preparation method for lanthanum-base multiple-ligand vulcanization accelerant
  • Preparation method for lanthanum-base multiple-ligand vulcanization accelerant
  • Preparation method for lanthanum-base multiple-ligand vulcanization accelerant

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Experimental program
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Effect test

Embodiment 1

[0043] The preparation method of accelerator:

[0044] 0.01molLaCl 3 Dissolve in absolute ethanol at 60°C, dissolve 0.02mol thiourea in absolute ethanol at 60°C, and dissolve 0.01mol o-phenanthroline in absolute ethanol at 60°C. Thoroughly mix the absolute ethanol solution of thiourea and the absolute ethanol solution of o-phenanthroline to obtain a mixed solution. Then the above mixed solution was added dropwise to LaCl 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-green powder, which is the target product LaA 2 B 0 C 0 D. 1 .

Embodiment 2

[0046] The preparation method of accelerator:

[0047] 0.01molLaCl 3 Dissolve in absolute ethanol at 60°C, dissolve 0.0001mol thiourea in absolute ethanol solution at 60°C, dissolve 0.02mol potassium ethyl xanthate in absolute ethanol solution at 60°C, and dissolve 0.03mol three Ethanolamine was dissolved in absolute ethanol solution at 60°C. Thoroughly mix the absolute ethanol solution of thiourea, the absolute ethanol solution of potassium ethyl xanthate and the absolute ethanol solution of triethanolamine to obtain a mixed solution. Then the above mixed solution was added dropwise to LaCl 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 LaA 0.01 B 2 C 3 D.0 .

Embodiment 3

[0049] The preparation method of accelerator:

[0050] 0.01molLaCl 3 Dissolve in absolute ethanol at 60°C, dissolve 0.01mol thiourea in absolute ethanol solution at 60°C, dissolve 0.01mol potassium ethyl xanthate in absolute ethanol solution at 60°C, and dissolve 0.015mol three Ethanolamine was dissolved in absolute ethanol solution at 60°C, and 0.005mol o-phenanthroline was dissolved in absolute ethanol solution at 60°C. Thoroughly mix the absolute ethanol solution of thiourea, the absolute ethanol solution of potassium ethyl xanthate, the absolute ethanol solution of triethanolamine and the absolute ethanol solution of o-phenanthroline to obtain a mixed solution. Then the above mixed solution was added dropwise to LaCl 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 targ...

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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...

Claims

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Application Information

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IPC IPC(8): C08K5/00C07F5/00C08L9/06
Inventor 刘力杜一诗摆音娜胡水温世鹏
Owner BEIJING UNIV OF CHEM TECH
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