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A kind of preparation method of erbium-based multi-ligand rubber vulcanization accelerator

A rubber vulcanization and multi-ligand technology is applied in the synthesis field of erbium-based multi-ligand vulcanization accelerators, which can solve problems such as poor solubility, and achieve the effects of simplifying the process, improving safety, and improving the promotion effect.

Active Publication Date: 2016-04-27
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 erbium-based multi-ligand rubber vulcanization accelerator
  • A kind of preparation method of erbium-based multi-ligand rubber vulcanization accelerator
  • A kind of preparation method of erbium-based multi-ligand rubber vulcanization accelerator

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0043] The preparation method of accelerator:

[0044] 0.01molErCl 3 Dissolve in absolute ethanol at 60°C, dissolve 0.02mol sodium dimethyl dithiocarbamate in absolute ethanol solution at 60°C, and dissolve 0.01mol triethanolamine in absolute ethanol solution at 60°C. An ethanol solution of sodium dimethyl dithiocarbamate and an ethanol solution of triethanolamine are thoroughly mixed evenly to obtain a mixed solution. Then the above mixed solution was added dropwise to ErCl 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 flesh-colored solid, the target product ErA 2 B 0 C 0 D. 1 .

Embodiment 2

[0046] The preparation method of accelerator:

[0047] 0.01molErCl 3 Dissolve in absolute ethanol at 60°C, dissolve 0.0001mol sodium dimethyl dithiocarbamate in absolute ethanol at 60°C, dissolve 0.02mol potassium ethyl xanthate in absolute ethanol at 60°C In, 0.03mol citric acid was dissolved in absolute ethanol solution at 60°C. Fully mix the ethanol solution of sodium dimethyl dithiocarbamate, the ethanol solution of potassium ethyl xanthate and the ethanol solution of citric acid to obtain a mixed solution. Then the above mixed solution was added dropwise to ErCl 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 a constant mass to obtain a powdery yellow powder, the target product ErA 0.01 B 2C 3 D. 0 .

Embodiment 3

[0049] The preparation method of accelerator:

[0050] 0.01molErCl 3 Dissolve in absolute ethanol at 60°C, dissolve 0.01mol sodium dimethyl dithiocarbamate in absolute ethanol at 60°C, dissolve 0.01mol potassium ethyl xanthate in absolute ethanol at 60°C In, 0.015mol citric acid was dissolved in 60°C absolute ethanol solution, and 0.005mol triethanolamine was dissolved in 60°C absolute ethanol solution. Fully mix the ethanol solution of sodium dimethyl dithiocarbamate, the ethanol solution of potassium ethyl xanthate, the ethanol solution of citric acid and the ethanol solution of triethanolamine to obtain a mixed solution. Then the above mixed solution was added dropwise to ErCl 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 a constant mass to obtain a flesh-colored powder, the target product ErA 1 B 1 C 1.5 D. 0.5 ....

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Abstract

The invention discloses an erbium-based multi-ligand vulcanization accelerator for rubber and a preparation method thereof. A rare earth element in the synthesis is erbium which contains 4 ligands, wherein a ligand 1 and a ligand 2 are accelerant groups with a good vulcanization accelerating effect; a ligand 3 is citric acid which can form strong coordination with the rare earth element; a ligand 4 is triethanolamine which can improve the solubility of the accelerator in rubber materials. The preparation method is simple, convenient and feasible, does not need inert gas shielding, is moderate in conditions of the preparation process, and generates no harmful gas. The multi-ligand rare earth vulcanization accelerator has good solubility in rubber,is long in vulcanization and scorching time and excellent in flatness of vulcanization curve, and is non-toxic, odorless and pollution-free. The accelerator can be applied to high performance tire and other rubber products instead of the conventional frequently-used blending system of zinc oxide, stearic acid and an accelerator.

Description

technical field [0001] The invention relates to a synthesis method of an erbium-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...

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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