Preparation method of Nd-based multi-ligand vulcanization accelerator

A rubber vulcanization and multi-ligand technology, which is applied in chemical instruments and methods, organic chemistry, and compounds containing elements of group 3/13 of the periodic table, etc., can solve problems such as poor solubility, and achieve simplified processes and mild conditions , the effect of saving consumption

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 of Nd-based multi-ligand vulcanization accelerator
  • Preparation method of Nd-based multi-ligand vulcanization accelerator
  • Preparation method of Nd-based multi-ligand vulcanization accelerator

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0043] The preparation method of accelerator:

[0044] 0.01molNdCl 3 Dissolve in absolute ethanol at 60°C, dissolve 0.02mol thiosemicarbazide in absolute ethanol at 60°C, and dissolve 0.01mol acrylic acid in absolute ethanol at 60°C. Fully mix the ethanol solution of thiosemicarbazide and the ethanol solution of acrylic acid to obtain a mixed solution. Then the above mixed solution was added dropwise to NdCl 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 Dried to a constant mass at 20°C in a desiccant desiccator to obtain a light pink powder, the target product NdA 2 B 0 C 0 D. 1 .

Embodiment 2

[0046] The preparation method of accelerator:

[0047] 0.01molNdCl 3 Dissolve in absolute ethanol at 60°C, dissolve 0.02mol sodium dimethyldithiocarbamate in absolute ethanol solution at 60°C, dissolve 0.0001mol thiosemicarbazide in absolute ethanol solution at 60°C , Dissolve 0.03mol o-phenanthroline in absolute ethanol solution at 60°C. Fully mix the ethanol solution of sodium dimethyl dithiocarbamate, the ethanol solution of thiosemicarbazide and the ethanol solution of o-phenanthroline to obtain a mixed solution. Then the above mixed solution was added dropwise to NdCl 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 blue powder, which is the target product NdA 0.01 B 2 C3 D. 0 .

Embodiment 3

[0049] The preparation method of accelerator:

[0050] 0.01molNdCl 3 Dissolve in absolute ethanol at 60°C, dissolve 0.01mol thiosemicarbazide in absolute ethanol at 60°C, dissolve 0.01mol sodium dimethyldithiocarbamate in absolute ethanol at 60°C, Dissolve 0.015mol o-phenanthroline in absolute ethanol solution at 60°C, and dissolve 0.005mol acrylic acid in absolute ethanol solution at 60°C. Fully mix the ethanol solution of sodium dimethyl dithiocarbamate, the ethanol solution of thiosemicarbazide, the ethanol solution of o-phenanthroline and the ethanol solution of acrylic acid to obtain a mixed solution. Then the above mixed solution was added dropwise to NdCl 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 blue powder, which is the target product NdA 1 B 1 C 1.5 D. 0.5 .

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Abstract

The invention discloses an Nd-based multi-ligand vulcanization accelerator and a preparation method thereof. In synthesis, an Nd element is used as a rare earth element, and four ligands are contained; the ligand 1 and the ligand 2 are accelerator radicals with good vulcanization acceleration effects, 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 solubility of the accelerator in a sizing material. The preparation method is simple, convenient and feasible, does not need inert gas shielding, is mild in preparation process condition, and has no harmful gas generation. The multi-ligand rare earth vulcanization accelerator has good solubility in rubber, and is long in vulcanization and scorching time, good in vulcanization curve flatness, non-toxic, odorless and pollution-free. The vulcanization accelerator can replace a currently used zinc oxide, stearic acid and accelerator combination system, and is applicable to high performance tires and other rubber products.

Description

technical field [0001] The invention relates to a synthesis method of a neodymium-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 accel...

Claims

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Application Information

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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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