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Rubber vulcanization activator as well as preparation method and application thereof

A technology of rubber vulcanization and activator, applied in the direction of zinc oxide/hydroxide, etc., which can solve the problems of cost pressure, environmental aquatic biological hazards, etc.

Pending Publication Date: 2020-09-01
江西宝弘纳米科技有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Residual zinc oxide will not only cause huge cost pressure on the rubber industry, but will also be released during the wear and use of rubber tires, causing great harm to the environment, especially aquatic organisms

Method used

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  • Rubber vulcanization activator as well as preparation method and application thereof
  • Rubber vulcanization activator as well as preparation method and application thereof
  • Rubber vulcanization activator as well as preparation method and application thereof

Examples

Experimental program
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preparation example Construction

[0026] The invention provides a kind of preparation method of rubber vulcanization active agent, comprises the following steps:

[0027] Mixing soluble zinc salt, calcium terephthalate and water to obtain a mixed dispersion;

[0028] mixing the mixed dispersion liquid with the alkaline solution, and performing a precipitation reaction to obtain a mixed slurry;

[0029] The mixed slurry is washed, solid-liquid separated and aged in sequence to obtain a rubber vulcanization active agent.

[0030] In the present invention, unless otherwise specified, the raw materials used are conventional commercially available products in this field.

[0031] The invention mixes soluble zinc salt, calcium terephthalate and water to obtain a mixed dispersion liquid.

[0032] In the present invention, the mixing sequence of the soluble zinc salt, calcium terephthalate and water is preferably: first mix the calcium terephthalate and part of the water to obtain a calcium terephthalate dispersion;...

Embodiment 1

[0047] Weigh 20g of zinc sulfate and 30g of calcium terephthalate, dissolve zinc sulfate in 100mL of water to obtain a zinc sulfate solution with a molar concentration of 0.2mol / L, ultrasonically disperse calcium terephthalate in 50mL of water, and ultrasonically disperse for 30min. Obtaining a calcium terephthalate dispersion with a solid content of 37.5%;

[0048] The obtained zinc sulfate solution and calcium terephthalate dispersion were mixed at room temperature, and after stirring for 1 hour, a mixed dispersion was obtained at a speed of 2000r / min;

[0049] Add 100 mL of sodium hydroxide solution with a molar concentration of 0.4 mol / L dropwise into the mixed dispersion liquid while stirring at a stirring speed of 500 r / min, and the dropping time is 20 minutes. After heating up to 60°C at a heating rate of / min, keep stirring for 1 hour while keeping warm to obtain a mixed slurry;

[0050] The obtained mixed slurry was washed with water and filtered three times in seque...

Embodiment 2

[0059] Weigh 30g of zinc sulfate and 20g of calcium terephthalate, dissolve the above-mentioned zinc sulfate in 100mL of water to obtain a zinc sulfate solution with a molar concentration of 0.2mol / L, ultrasonically disperse the calcium terephthalate in 50mL of water, and ultrasonically disperse for 30min , the calcium terephthalate dispersion liquid that obtains solid content is 28.6%;

[0060] The obtained zinc sulfate solution and calcium terephthalate dispersion were mixed at room temperature, and after stirring for 1.5 hours, a mixed dispersion was obtained at a speed of 3000r / min;

[0061] Add 100mL sodium hydroxide solution with a molar concentration of 1mol / L dropwise into the mixed dispersion liquid while stirring at a stirring speed of 300r / min, and the dropwise addition time is 60 minutes. After heating up to 80°C at a heating rate of min, keep stirring for 1.5 hours while keeping warm to obtain a mixed slurry;

[0062] The obtained mixed slurry was washed with wat...

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Abstract

The invention provides a rubber vulcanization activator as well as a preparation method and application thereof, and relates to the technical field of rubber preparation. The preparation method provided by the invention comprises the following steps: mixing soluble zinc salt, calcium terephthalate and water to obtain a mixed dispersion liquid; mixing the mixed dispersion liquid with an alkaline solution, and carrying out precipitation reaction to obtain mixed slurry; and sequentially carrying out washing, solid-liquid separation and aging treatment on the mixed slurry to obtain the rubber vulcanization activator. According to the invention, zinc oxide is synthesized in situ by utilizing calcium terephthalate, and zinc oxide is uniformly dispersed on the surface of calcium terephthalate, sothat zinc oxide is not easy to agglomerate and remain in the vulcanization process of rubber, the utilization rate of zinc oxide is improved, and environmental pollution is reduced. Calcium terephthalate is used as a raw material, so that the binding force of the rubber vulcanization activator and rubber is effectively improved, and the tensile strength of the rubber is improved.

Description

technical field [0001] The invention relates to the technical field of rubber preparation, in particular to a rubber vulcanization active agent and its preparation method and application. Background technique [0002] Zinc oxide has physical properties such as tiny particles, large specific surface area, good dispersibility, looseness and porosity, and good fluidity, so it is widely used in rubber. Its main function is to reduce heat generation during rubber mixing and improve rubber strength. and elasticity. [0003] The study found that during the vulcanization process of rubber, zinc oxide did not fully participate in the vulcanization reaction of rubber, and a considerable part of zinc oxide was agglomerated into solid particles, which remained in the rubber in the form of solid particles, acting as an expensive "inorganic filler". . Residual zinc oxide will not only cause huge cost pressure on the rubber industry, but will also be released during the wear and use of r...

Claims

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Application Information

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IPC IPC(8): C08K9/12C08K3/22C08K5/098C08L21/00C01G9/02
CPCC01G9/02C08K3/22C08K5/098C08K9/12C08K2003/2296C08L21/00
Inventor 刘坤吉徐前进
Owner 江西宝弘纳米科技有限公司
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