Calcium sulfate whisker-nanometer zinc oxide composite material and its preparation method and application

A calcium sulfate whisker and nano-zinc oxide technology, applied in the field of composite materials, can solve the problems of easy static electricity, limited nano-effects, large specific surface area, etc., and achieve the effect of preventing agglomeration

Active Publication Date: 2021-10-26
JIANGSU ATE DONGTAI NEW MATERIALS TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, due to the fine particles and large specific surface area, nano-zinc oxide is prone to static electricity and agglomeration. Especially in the process of rubber mixing, it is easy to cause uneven dispersion and affect the mechanical properties of the rubber compound.
This greatly limits the play of its nano-effect

Method used

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  • Calcium sulfate whisker-nanometer zinc oxide composite material and its preparation method and application
  • Calcium sulfate whisker-nanometer zinc oxide composite material and its preparation method and application
  • Calcium sulfate whisker-nanometer zinc oxide composite material and its preparation method and application

Examples

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Effect test

Embodiment 1

[0044] This embodiment provides a preparation method of calcium sulfate whisker-nanometer zinc oxide composite material, the specific steps are:

[0045] (1) under constant stirring state, 75.4g zinc sulfate is dissolved in a certain amount of water, is made into about 25% transparent solution;

[0046] (2) Under constant stirring, dissolve 35.4g of calcium hydroxide in a certain amount of water to make a white slurry of about 25%, and add 0.3g of sodium dodecylbenzenesulfonate and 1g of magnesium sulfate powder to the white slurry .

[0047] (3) Under constant stirring, the transparent solution of zinc sulfate prepared in step (1) is slowly added to the calcium hydroxide slurry obtained in step (2), and zinc sulfate and calcium hydroxide react to form a white Precipitation of calcium sulfate and zinc hydroxide, control the pH value of the final solution to 10, continue to stir and react at a speed of 600r / min for 60min to obtain a mixed slurry of calcium sulfate and zinc hyd...

Embodiment 2

[0052] This embodiment provides a preparation method of calcium sulfate whisker-nanometer zinc oxide composite material, the specific steps are:

[0053] (1) under constant stirring state, 134.3g zinc sulfate heptahydrate is dissolved in a certain amount of water, is made into about 25% transparent solution;

[0054] (2) Under constant stirring, dissolve 35.4g of calcium hydroxide in a certain amount of water to form a white slurry of about 25%, and add 0.2g of sodium dodecylsulfonate and 0.2g of polyethylene glycol to the white slurry. Glycol 2000 and 2 g of magnesium nitrate powder.

[0055] (3) Under constant stirring, the transparent solution of zinc sulfate prepared in step (1) is slowly added to the calcium hydroxide slurry obtained in step (2), and zinc sulfate and calcium hydroxide react to form a white Precipitation of calcium sulfate and zinc hydroxide, control the pH value of the final solution to 10, continue to stir and react at a speed of 600r / min for 60min to o...

Embodiment 3

[0060] This embodiment provides a preparation method of calcium sulfate whisker-nanometer zinc oxide composite material, the specific steps are:

[0061] (1) Under constant stirring, 85.9g of zinc sulfate monohydrate is dissolved in a certain amount of water to form a transparent solution of about 25%;

[0062] (2) Under constant stirring, dissolve 35.4g of calcium hydroxide in a certain amount of water to form a white slurry of about 25%, and add 0.4g of sodium polyacrylate and 2g of nanometer zinc oxide powder to the white slurry.

[0063] (3) Under constant stirring, the transparent solution of zinc sulfate prepared in step (1) is slowly added to the calcium hydroxide slurry obtained in step (2), and zinc sulfate and calcium hydroxide react to form a white Precipitation of calcium sulfate and zinc hydroxide, control the pH value of the final solution to 10, continue to stir and react at a speed of 360r / min for 30min to obtain a mixed slurry of calcium sulfate and zinc hydro...

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Abstract

The invention provides a calcium sulfate whisker-nano-zinc oxide composite material and a preparation method and application thereof. Calcium hydroxide is dissolved in water to make calcium hydroxide slurry, and dispersant and crystal growth agent are added; zinc sulfate is dissolved in water to make zinc sulfate solution, which is added to calcium hydroxide slurry to obtain calcium sulfate whiskers and zinc hydroxide. Mixed slurry; place zinc oxide, fatty acid, vulcanization accelerator and water in a ball mill for grinding, part of the zinc oxide undergoes a complexation reaction to form a mixed slurry containing zinc complexes, and then add calcium sulfate whiskers and zinc hydroxide In the mixed slurry, the calcium sulfate whisker-nanometer zinc oxide composite material is obtained after being fully mixed. The surface modification of the composite material by the zinc organic complex improves the dispersion performance of the composite material in rubber and the vulcanization reaction speed, makes up for the influence of low zinc content on the performance of the vulcanization activator, and realizes the reduction of zinc oxide in the rubber formula At the same time, calcium sulfate whiskers also play a role in strengthening and toughening rubber.

Description

technical field [0001] The invention belongs to the technical field of composite materials, and relates to a calcium sulfate whisker-nanometer zinc oxide composite material and a preparation method and application thereof. Background technique [0002] In the rubber sulfur vulcanization system, zinc oxide is mainly used as a vulcanization activator. Its role is to give full play to the role of organic accelerators, reduce the amount of accelerators or shorten the vulcanization time, and at the same time, zinc oxide can also reduce heat generation and improve the wear resistance of tires. performance. In recent years, reducing the content of zinc oxide in rubber compounds has become an important issue. Zinc is released from rubber into the environment during rubber production, processing of rubber products, and recycling, and may also be released through tire wear during use. The release of zinc will have adverse effects on the environment and human health, especially aquat...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C08K9/04C08K7/08C08K3/22C08L7/00C08K13/06C08K3/04C08K5/09C08K3/06
CPCC08K3/04C08K3/06C08K3/22C08K5/09C08K7/08C08K9/04C08K13/06C08K2003/2296C08K2201/011C08L7/00
Inventor 易文施伟陆建
Owner JIANGSU ATE DONGTAI NEW MATERIALS TECH
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