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Novel zinc oxide rubber vulcanization activator, and preparation method and application thereof

A technology of rubber vulcanization and zinc oxide, applied in the field of rubber additives, can solve the problems of poor compatibility with polymers, easy agglomeration, low reactivity, etc., and achieve the effects of short production cycle, reduced pollution and high reactivity

Inactive Publication Date: 2017-04-19
GUANGZHOU KAIYAO ASSET MANAGEMENT CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0005] In order to overcome the deficiencies and shortcomings of ordinary nano-zinc oxide in the prior art, such as easy agglomeration, poor compatibility with polymers, and low reactivity, the primary purpose of the present invention is to provide a method for preparing a novel zinc oxide rubber vulcanization activator

Method used

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  • Novel zinc oxide rubber vulcanization activator, and preparation method and application thereof
  • Novel zinc oxide rubber vulcanization activator, and preparation method and application thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0039] (1) Mix methacrylic acid and sodium hydroxide solution evenly, and adjust the pH to 9.0; then slowly add zinc chloride solution with an initial concentration of 276mg / ml, wherein the molar ratio of zinc chloride to methacrylic acid in the reaction system 1:2, the mol ratio of zinc chloride to the hydroxide ion in the sodium hydroxide solution is 1:2; after the zinc chloride solution is added, stir and react for 40min, filter and separate to obtain the crude product, then wash, Obtain nano zinc methacrylate;

[0040] (2) Mix the nano-zinc methacrylate prepared in step (1) with sodium hydroxide solution and ultrasonically treat it for 40min, then slowly add the zinc chloride solution whose initial concentration is 63.4mg / ml, wherein, the chlorine in the reaction system The molar ratio of zinc chloride to zinc methacrylate is 2:1, and the molar ratio of zinc chloride to hydroxide ions in sodium hydroxide solution is 1:1; Stir and react for 80 minutes; filter and separate ...

Embodiment 2

[0043] (1) Mix 2-butenoic acid and sodium hydroxide solution evenly, and adjust the pH to 10.0; then slowly add zinc chloride solution with an initial concentration of 74mg / ml, wherein, in the reaction system, zinc chloride and 2-butene The molar ratio of the acid is 1:1, and the molar ratio of the hydroxide ion in the zinc chloride to the sodium hydroxide solution is 1:1; after the addition of the zinc chloride solution, stir and react for 30 minutes, filter and separate to obtain the crude product , and then washed to obtain nano-zinc 2-butenoate;

[0044](2) Mix the nano-zinc 2-butenoate prepared in step (1) with sodium hydroxide solution and ultrasonically treat it for 30min, then slowly add the zinc nitrate solution whose initial concentration is 33.2mg / ml, wherein, in the reaction system The molar ratio of zinc nitrate to zinc 2-butenoate is 3:1, and the molar ratio of zinc nitrate to hydroxide ions in the sodium hydroxide solution is 1:2; Stir and react for 100 minutes...

Embodiment 3

[0047] (1) Mix methacrylic acid and sodium hydroxide solution evenly, and adjust the pH to 8.0; then slowly add calcium chloride solution with an initial concentration of 111mg / ml, wherein the molar ratio of calcium chloride to methacrylic acid in the reaction system It is 1:1.5, and the mol ratio of calcium chloride and the hydroxide ion in the sodium hydroxide solution is 1:1.5; After the calcium chloride solution is added, stir and react for 60min, filter and separate, obtain the crude product, then wash, Obtain nanometer calcium methacrylate;

[0048] (2) Mix the nano-calcium methacrylate prepared in step (1) with sodium hydroxide solution and ultrasonically treat it for 50min, then slowly add the zinc chloride solution whose initial concentration is 63.4mg / ml, wherein, the chlorine in the reaction system The molar ratio of zinc chloride to calcium methacrylate is 1:1, and the molar ratio of zinc chloride to hydroxide ions in sodium hydroxide solution is 1:1.5; Stir and r...

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Abstract

The invention belongs to the field of rubber assistants, and concretely relates to a novel zinc oxide rubber vulcanization activator, and a preparation method and an application thereof. The preparation method comprises the following steps: adding a soluble metal salt to an unsaturated carboxylic acid and alkali solution mixed solution to obtain a nanometer unsaturated carboxylic acid metal salt, carrying out a direct chemical precipitation technology to prepare a composite microsphere adopting the nanometer unsaturated carboxylic acid metal salt as a core and a zinc oxide nanoparticle as a shell, and modifying the surface of the zinc oxide nanoparticle on the surface of the composite microsphere to obtain the novel zinc oxide rubber vulcanization activator. The unsaturated carboxylic acid metal salt introduced to the activator has excellent cross-linking, reinforcing, lubricating and dispersion-aiding effects. Nanometer zinc oxide is grafted with a coupling agent, and the steric hindrance effect of the coupling agent of the organic long chain of the coupling agent makes nanometer composite microspheres effectively agglomerated, so the nanometer composite microspheres are uniformly dispersed. The activator is added to substantially improve the mechanical performances, the ageing resistance and the ultraviolet resistance of rubber.

Description

technical field [0001] The invention belongs to the field of rubber additives, and in particular relates to a novel zinc oxide rubber vulcanization activator and its preparation method and application. Background technique [0002] In the vulcanization molding process of rubber, in addition to adding vulcanizing agents, vulcanization accelerators, and anti-scorch agents, in order to increase the vulcanization speed, it is generally necessary to add vulcanization activators. The commonly used vulcanization activators are zinc oxide, stearic acid, etc. . Among them, zinc oxide has been used as a vulcanization activator in rubber for a hundred years. It is a classic combination with stearic acid, and the dosage has remained unchanged at 5 parts. As an active agent, zinc oxide and stearic acid generate zinc stearate, which improves its solubility in the rubber compound; it chelates with the cross-linking precursor, increases new cross-linking bonds, and increases the cross-link...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C08K9/06C08K7/16C08K3/22C08K5/098C08L9/02
CPCC08K9/06C08K3/22C08K5/098C08K7/16C08K2003/2296C08L9/02C08L2205/025C08L2205/035C08L91/00C08L91/06C08K13/06C08K5/09C08K3/04C08K5/548C08K3/06C08K5/47C08K5/18
Inventor 曹蓓蓓
Owner GUANGZHOU KAIYAO ASSET MANAGEMENT CO LTD
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