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

A technology of vulcanization accelerator and ligand, which is applied in the synthesis field of lanthanum-based multi-ligand vulcanization accelerator, can solve problems such as poor solubility, achieve simplified process, good reversion resistance, and simple and easy preparation method 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 lanthanum-based multi-ligand vulcanization accelerator and preparation method thereof
  • A kind of lanthanum-based multi-ligand vulcanization accelerator and preparation method thereof
  • A kind of lanthanum-based multi-ligand vulcanization accelerator and preparation method thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0043] The preparation method of accelerator:

[0044] 0.01molLaCl 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 triethanolamine in absolute ethanol at 60°C in solution. Fully mix the ethanol solution of N-cyclohexyl-2-benzothiazole sulfenamide and the 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 a constant mass to obtain a beige powder, 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 N-cyclohexyl-2-benzothiazole sulfenamide in absolute ethanol at 60°C, dissolve 0.02mol sodium diethyldithiocarbamate In the absolute ethanol solution at 60°C, dissolve 0.03mol acrylic acid in the absolute ethanol solution at 60°C. Fully mix the ethanol solution of N-cyclohexyl-2-benzothiazole sulfenamide, the ethanol solution of sodium diethyldithiocarbamate and the ethanol solution of acrylic acid 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 2Dry in a desiccant desiccator at 20°C to a constant mass to obtain a light brown 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 N-cyclohexyl-2-benzothiazole sulfenamide in absolute ethanol solution at 60°C, dissolve 0.01mol sodium diethyldithiocarbamate in In the absolute ethanol solution at 60°C, 0.015mol acrylic acid was dissolved in the absolute ethanol solution at 60°C, and 0.005mol triethanolamine 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 sodium diethyldithiocarbamate, the ethanol solution of triethanolamine and the ethanol solution of acrylic acid 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 a constant mass to obtain a bro...

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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 lanthanum element which contains 4 ligands; the ligand 1 and the ligand 2 are accelerant groups with favorable vulcanization accelerating effect; the ligand 3 is crylic acid which can improve the solubility of the accelerant in rubber; the ligand 4 is triethanolamine 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 curves 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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Patent Type & Authority Patents(China)
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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