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

A vulcanization accelerator and ligand technology, which is applied in the field of synthesis of cerium-based multi-ligand vulcanization accelerators, can solve problems such as poor solubility, and achieve the effects of simplifying the process, simplifying the feeding process, and achieving remarkable vulcanization acceleration effects

Active Publication Date: 2016-02-10
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 cerium-based multi-ligand vulcanization accelerator and preparation method thereof
  • A kind of cerium-based multi-ligand vulcanization accelerator and preparation method thereof
  • A kind of cerium-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] 0.01molCeCl 3 Dissolve in absolute ethanol at 60°C, dissolve 0.02mol sodium diethyldithiocarbamate in absolute ethanol solution at 60°C, and dissolve 0.01mol o-phenanthroline in absolute ethanol solution at 60°C. Thoroughly mix the absolute ethanol solutions containing sodium diethyldithiocarbamate and o-phenanthroline to obtain a mixed solution. Then the above mixed solution was added dropwise to CeCl 3 in an anhydrous ethanol solution, stirred in an oil bath at 80°C for 6 hours, then filtered, and the precipitate was washed with anhydrous ethanol, and dried to a constant mass at 20°C in a desiccator with a CaCl2 desiccant to obtain an earth-red 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 0.0001mol sodium diethyldithiocarbamate in absolute ethanol at 60°C, dissolve 0.02mol thiourea in absolute ethanol at 60°C, and dissolve 0.03 mol of methacrylic acid was dissolved in absolute ethanol solution at 60°C. The dehydrated ethanol solution containing sodium diethyldithiocarbamate, the dehydrated ethanol solution containing thiourea and the dehydrated ethanol solution containing methacrylic acid 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 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 beige powder, namely the target product CeA 0.01 B 2 C3 D. 0 .

Embodiment 3

[0049] The preparation method of accelerator:

[0050] 0.01molCeCl 3 Dissolve in absolute ethanol at 60°C, dissolve 0.01mol sodium diethyldithiocarbamate in absolute ethanol at 60°C, dissolve 0.01mol thiourea in absolute ethanol at 60°C, and dissolve 0.015 mol methacrylic acid was dissolved in 60°C absolute ethanol solution, and 0.005mol o-phenanthroline was dissolved in 60°C absolute ethanol solution. Fully mix the dehydrated ethanol solution containing sodium diethyldithiocarbamate, the dehydrated ethanol solution containing thiourea, the dehydrated ethanol solution containing methacrylic acid and the dehydrated alcohol solution containing o-phenanthroline to obtain mixture. 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 constant mass to obtain a light brown powd...

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Abstract

The invention discloses a samarium-group multiple-ligand vulcanization accelerator 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 methacrylic acid capable of improving the dissolubility of an accelerator in a sizing material, and the ligand 4 is phenanthroline capable of forming strong coordination with the rare earth element. The preparation method for the samarium-group multiple-ligand vulcanization accelerator 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 vulcanization accelerator 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 vulcanization accelerator 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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