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

A rubber vulcanization and multi-ligand technology, which is applied in the synthesis of holmium-based multi-ligand vulcanization accelerators, can solve problems such as poor solubility, and achieve the effects of simplified process, mild conditions and good vulcanization curve flatness.

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 holmium-based multi-ligand rubber vulcanization accelerator and preparation method thereof
  • A kind of holmium-based multi-ligand rubber vulcanization accelerator and preparation method thereof
  • A kind of holmium-based multi-ligand rubber vulcanization accelerator and preparation method thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0042] The preparation method of accelerator:

[0043] 0.01molHoCl 3 Dissolve in absolute ethanol at 60°C, dissolve 0.02mol sodium diethyldithiocarbamate in absolute ethanol at 60°C, and dissolve 0.01mol α-methacrylic acid in absolute ethanol at 60°C. Fully mix the ethanol solution of sodium diethyldithiocarbamate and the ethanol solution of α-methacrylic acid to obtain a mixed solution. Then the above mixed solution was added dropwise to the HoCl 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 white powder, the target product HoA 2 B 0 C 0 D. 1 .

Embodiment 2

[0045] The preparation method of accelerator:

[0046] 0.01molHoCl 3 Dissolve in absolute ethanol at 60°C, dissolve 0.0001mol potassium ethyl xanthate in absolute ethanol solution at 60°C, dissolve 0.02mol sodium diethyldithiocarbamate in absolute ethanol solution at 60°C In, 0.03mol palmitic acid was dissolved in absolute ethanol solution at 60°C. Fully mix the ethanol solution of sodium diethyldithiocarbamate, the ethanol solution of potassium ethyl xanthate and the ethanol solution of palmitic acid to obtain a mixed solution. Then the above mixed solution was added dropwise to the HoCl 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 HoA 0.01 B2 C 3 D. 0 .

Embodiment 3

[0048] The preparation method of accelerator:

[0049] 0.01molHoCl 3 Dissolve in absolute ethanol at 60°C, dissolve 0.01mol sodium diethyldithiocarbamate in absolute ethanol solution at 60°C, dissolve 0.01mol potassium ethyl xanthate in absolute ethanol solution at 60°C 0.015mol palmitic acid was dissolved in 60°C absolute ethanol solution, and 0.005mol α-methacrylic acid was dissolved in 60°C absolute ethanol solution. Fully mix the ethanol solution of sodium diethyldithiocarbamate, the ethanol solution of potassium ethyl xanthate, the ethanol solution of palmitic acid and the ethanol solution of α-methacrylic acid to obtain a mixed solution. Then the above mixed solution was added dropwise to the HoCl 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 yellow powder, the target product HoA 1 B 1...

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Abstract

The invention discloses a holmium-based multiple-ligand rubber vulcanization accelerator and a preparation method thereof. A rare earth element in synthesis is holmium comprising four ligands, the ligands 1 and 2 are accelerator groups having excellent vulcanizing and accelerating effects, the ligand 3 is palmitic acid capable of accelerating solubility of the accelerator in a sizing material, and the ligand 4 is alpha-methylacrylic acid capable of forming strong ligands together with the rare earth element. The method is simple, convenient and easy, and does not require protection of inert gas, conditions during the preparation process are moderate, and no harmful gases can be generated. The multiple-ligand rare earth vulcanization accelerator has a good solubility in rubber, the vulcanizing and scorching time is long, the vulcanization curve is excellent in flatness, and toxin, odour and pollution are avoided. The accelerator can replace a conventionally used zinc oxide, octadecanoic acid and accelerator combined-use system and can be applied to high-performance tires and other rubber products.

Description

technical field [0001] The invention relates to a synthesis method of a holmium-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 acceler...

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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