Calcium sulfate whisker-nano zinc oxide composite material and preparation method and application thereof

A calcium sulfate whisker and nano-zinc oxide technology, applied in the field of composite materials, can solve the problems of easy static electricity, uneven dispersion, affecting the mechanical properties of rubber materials, etc., and achieve the effect of preventing agglomeration

Active Publication Date: 2020-07-10
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-nano zinc oxide composite material and preparation method and application thereof
  • Calcium sulfate whisker-nano zinc oxide composite material and preparation method and application thereof
  • Calcium sulfate whisker-nano zinc oxide composite material and preparation method and application thereof

Examples

Experimental program
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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. The preparation method comprises the steps: dissolving calcium hydroxide in water to prepare calcium hydroxide slurry, and adding a dispersing agent and a crystalline growth promoter; dissolving zinc sulfate in water to prepare a zinc sulfate solution, and adding the zinc sulfate solution into the calcium hydroxide slurry to obtain a mixed slurry of calcium sulfate whiskers and zinc hydroxide; putting zinc oxide, fatty acid, a vulcanization accelerator and waterinto a ball mill for grinding, carrying out complexation reaction on part of zinc oxide to form mixed slurry containing a zinc complex, then adding the mixed slurry into the mixed slurry of calcium sulfate whiskers and zinc hydroxide, and fully mixing to obtain the calcium sulfate whisker-nano zinc oxide composite material. The zinc organic complex modifies the surface of the composite material so that the dispersion performance and the vulcanization reaction speed of the composite material in rubber are improved, the influence of low zinc content on the performance of the vulcanization activator is made up, and the calcium sulfate whiskers also play a role in reinforcing and toughening the rubber while zinc oxide in the rubber formula is used in a decrement manner.

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 Applications(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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