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Preparation method for samarium-group multiple-ligand thiofide

A rubber vulcanization and accelerator technology, which is applied in the synthesis field of samarium-based multi-ligand vulcanization accelerators, can solve problems such as poor solubility, and achieve the effects of simplified process, mild conditions and saving dosage

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 samarium-group multiple-ligand thiofide
  • Preparation method for samarium-group multiple-ligand thiofide
  • Preparation method for samarium-group multiple-ligand thiofide

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0043] The preparation method of accelerator:

[0044] 0.01molSmCl 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 SmCl 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 white powder, the target product SmA 2 B 0 C 0 D. 1 .

Embodiment 2

[0046] The preparation method of accelerator:

[0047] 0.01molSmCl 3 Dissolve in absolute ethanol at 60°C, dissolve 0.02mol 2-mercaptobenzothiazole in absolute ethanol solution at 60°C containing 0.02mol NaOH, dissolve 0.0001mol sodium dimethyldithiocarbamate in 60°C In the absolute ethanol solution, dissolve 0.03mol α-methacrylic acid in the absolute ethanol solution at 60°C. The ethanol solution of sodium dimethyl dithiocarbamate, the ethanol solution of 2-mercaptobenzothiazole sodium salt and the ethanol solution of α-methacrylic acid are thoroughly mixed to obtain a mixed solution. Then the above mixed solution was added dropwise to SmCl 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 light yellow powder, the target product SmA 0.01 B 2 C 3 D. 0 .

Embodiment 3

[0049] The preparation method of accelerator:

[0050] 0.01molSmCl 3 Dissolve in absolute ethanol at 60°C, dissolve 0.01mol sodium dimethyl dithiocarbamate in absolute ethanol solution at 60°C, dissolve 0.01mol 2-mercaptobenzothiazole in 60°C containing 0.01mol NaOH In the absolute ethanol solution, 0.015mol α-methacrylic 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. The ethanol solution of sodium dimethyldithiocarbamate, the ethanol solution of 2-mercaptobenzothiazole sodium salt, the ethanol solution of α-methacrylic acid and the ethanol solution of triethanolamine are thoroughly mixed to obtain a mixed solution. Then the above mixed solution was added dropwise to SmCl 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 consta...

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Abstract

The invention discloses a samarium-group multiple-ligand thiofide and a preparation method thereof. According to the preparation method, during synthesis, a rare earth element is a samarium element comprising four ligands. The ligand 1 and the ligand 2 are accelerating agent groups with an excellent vulcanization accelerating effect, the ligand 3 is acrylic acid capable of improving the dissolubility of an accelerator in a sizing material, and the ligand 4 is triethanolamine capable of forming strong coordination with the rare earth element. The preparation method for the samarium-group multiple-ligand thiofide is simple, convenient and feasible, and does not need inert gas for protection, conditions in the preparing process are mild, and production of harmful gas is prevented. The multiple-ligand rare earth thiofide has good dissolubility in rubber, and is long in sulfidation and scorching times, good in flatness of a sulfidation curve, nontoxic, odorless and free from contamination. The thiofide can substitute a conventionally frequently-used simultaneous-use system of zinc oxide, stearic acid and an accelerator, and is applied to high-performance tires and other rubber products.

Description

technical field [0001] The invention relates to a synthesis method of a samarium-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 Applications(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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