Ytterbium-based multi-ligand vulcanization accelerator and preparation method thereof

A vulcanization accelerator and multi-ligand technology, which is applied in the field of synthesis of ytterbium-based multi-ligand vulcanization accelerators, can solve problems such as poor solubility, and achieve the effects of simplifying the process, improving solubility, 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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  • Ytterbium-based multi-ligand vulcanization accelerator and preparation method thereof
  • Ytterbium-based multi-ligand vulcanization accelerator and preparation method thereof
  • Ytterbium-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] 0.01molYbCl 3 Dissolve in absolute ethanol at 60°C, dissolve 0.02mol N-cyclohexyl-2-benzothiazole sulfenamide in absolute ethanol at 60°C, dissolve 0.01mol dopamine in absolute ethanol at 60°C middle. The ethanol solution of N-cyclohexyl-2-benzothiazole sulfenamide and the ethanol solution of dopamine are thoroughly mixed evenly to obtain a mixed solution. Then the above mixed solution was added dropwise to YbCl 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, which is the target product YbA 2 B 0 C 0 D. 1 .

Embodiment 2

[0046] The preparation method of accelerator:

[0047] 0.01molYbCl 3 Dissolve in absolute ethanol at 60°C, dissolve 0.02mol 2-mercaptobenzothiazole in absolute ethanol solution at 60°C containing 0.02mol sodium hydroxide, and dissolve 0.0001mol N-cyclohexyl-2-benzothiazole Sulfonamide was dissolved in absolute ethanol solution at 60°C, and 0.03mol citric acid was dissolved in absolute ethanol solution at 60°C. Fully mix the ethanol solution of N-cyclohexyl-2-benzothiazole sulfenamide, the ethanol solution of 2-mercaptobenzothiazole sodium salt and the ethanol solution of citric acid to obtain a mixed solution. Then the above mixed solution was added dropwise to YbCl 3in 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 YbA 0.01 B 2 C 3 D. 0 .

Embodiment 3

[0049] The preparation method of accelerator:

[0050] 0.01molYbCl 3 Dissolve in absolute ethanol at 60°C, dissolve 0.01mol 2-mercaptobenzothiazole in absolute ethanol solution at 60°C containing 0.01mol sodium hydroxide, and dissolve 0.01mol N-cyclohexyl-2-benzothiazole Dissolve sulfonamide in absolute ethanol solution at 60°C, dissolve 0.015mol citric acid in absolute ethanol solution at 60°C, and dissolve 0.005mol dopamine in absolute ethanol solution at 60°C. Fully mix the ethanol solution of N-cyclohexyl-2-benzothiazole sulfenamide, the ethanol solution of 2-mercaptobenzothiazole sodium salt, the ethanol solution of citric acid and the ethanol solution of dopamine to obtain a mixed solution. Then the above mixed solution was added dropwise to YbCl 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...

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Abstract

The invention discloses an ytterbium-based multi-ligand vulcanization accelerator and a preparation method thereof. During synthesis, ytterbium, a rare earth element, is adopted. The vulcanization accelerator comprises 4 ligands, wherein the first ligand and the second ligand are accelerator groups with good vulcanization accelerating effects; the third ligand is citric acid which can form good coordination with the rare earth element; the ligand 4 is dopamine which can improve the solubility of the vulcanization accelerator in rubber. According to the invention, the preparation method is simple and feasible, no inert gas shielding is needed, the preparation conditions are mild, and no harmful gas is generated. The vulcanization accelerator is high in solubility in rubber, can maintain a long vulcanization scorch time, is non-toxic and odorless, and generates no pollution; the flatness of the vulcanization curve is high. The vulcanization accelerator can replace the current commonly-used combined system of zinc oxide, stearic acid and accelerator. The vulcanization accelerator can be applied to high-performance tire and other rubber products.

Description

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

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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