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

A rubber vulcanization and accelerator technology, which is applied in the synthesis field of cerium-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: 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 cerium-based multi-ligand rubber vulcanization accelerator
  • A kind of preparation method of cerium-based multi-ligand rubber vulcanization accelerator
  • A kind of preparation method of cerium-based multi-ligand rubber vulcanization accelerator

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0043] The preparation method of accelerator:

[0044] 0.01molCeCl 3 Dissolve in absolute ethanol at 60°C, dissolve 0.02mol potassium ethyl xanthate in absolute ethanol solution at 60°C, and dissolve 0.01mol acrylic acid in absolute ethanol solution at 60°C. Fully mix the absolute ethanol solution of potassium ethyl xanthate and the absolute ethanol solution of acrylic acid to obtain a mixed solution. Then the above mixed solution was added dropwise to CeCl 3 in anhydrous ethanol solution, stirred in an oil bath at 80°C for 6h and then 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 light yellow powder, the target product CeA 2 B 0 C 0 D. 1 .

Embodiment 2

[0046] The preparation method of accelerator:

[0047] 0.01molCeCl 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 potassium ethyl xanthate in absolute ethanol at 60°C In the solution, 0.03mol o-phenanthroline was dissolved in absolute ethanol solution at 60°C. The absolute ethanol solution of 2-mercaptobenzothiazole sodium salt, the absolute ethanol solution of potassium ethyl xanthate, and the absolute ethanol solution of o-phenanthroline are thoroughly mixed to obtain a mixed solution. Then the above mixed solution was added dropwise to CeCl 3 in anhydrous ethanol solution, stirred in an oil bath at 80°C for 6h and then 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 yellow powder, the target product CeA 0.01 B 2 C 3 D. 0 .

Embodiment 3

[0049] The preparation method of accelerator:

[0050] 0.01molCeCl 3 Dissolve in absolute ethanol at 60°C, dissolve 0.01mol potassium ethyl xanthate in absolute ethanol solution at 60°C, dissolve 0.01mol 2-mercaptobenzothiazole in absolute ethanol at 60°C containing 0.01mol NaOH In the solution, 0.015mol o-phenanthroline was dissolved in absolute ethanol solution, and 0.005mol acrylic acid was dissolved in absolute ethanol solution. Fully mix the absolute ethanol solution of 2-mercaptobenzothiazole sodium salt, the absolute ethanol solution of potassium ethyl xanthate, the absolute ethanol solution of acrylic acid and the absolute ethanol solution of phenanthroline to obtain a mixed solution . Then the above mixed solution was added dropwise to CeCl 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...

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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 phenanthroline capable of forming strong coordination with the rare earth element, and the ligand 4 is acrylic acid capable of improving the dissolubility of an accelerator in a sizing material. 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 cerium-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 accelera...

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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