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Method for uniformly fluorinating zinc oxide powder

A technology of zinc oxide and zinc oxide powder, which is applied in the direction of zinc oxide/zinc hydroxide, nanotechnology, etc., can solve the problems of complex process and expensive modifier, achieve strong bonding, improve surface properties, improve The effect of interface interaction

Active Publication Date: 2018-07-27
HENAN INST OF ENG
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Although these methods have improved the compatibility between zinc oxide nanopowders and polymers and the bonding between the interfaces, the methods for improving the interfaces are complicated and the modifiers are expensive.

Method used

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  • Method for uniformly fluorinating zinc oxide powder
  • Method for uniformly fluorinating zinc oxide powder

Examples

Experimental program
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Effect test

Embodiment 1

[0022] A method for uniformly fluorinating zinc oxide powder, the following steps are adopted:

[0023] (1) Zinc oxide powder surface coupling agent treatment: Add zinc oxide powder with a particle size of 10nm to the mixture of titanate coupling agent NDZ-101 and alcohol, in which titanate coupling agent NDZ-101 The mass ratio of alcohol to alcohol is 1:10, treated at 90°C for 5 hours, cleaned with deionized water and alcohol, and dried in a drying oven for 2 hours;

[0024] (2) Polyvinyl alcohol coating treatment on the surface of zinc oxide powder: place the zinc oxide powder treated in the first step in polyvinyl alcohol aqueous solution, where the concentration of polyvinyl alcohol aqueous solution is 5%, zinc oxide powder and The mass ratio of the polyvinyl alcohol aqueous solution is 1:1, stirred at 50°C for 5 hours, then centrifuged, then centrifuged, and deionized water to wash to obtain fluorinated zinc oxide powder coated with polyvinyl alcohol on the surface;

[0...

Embodiment 2

[0029] A method for uniformly fluorinating zinc oxide powder, the following steps are adopted:

[0030] (1) Zinc oxide powder surface coupling agent treatment: Add zinc oxide powder with a particle size of 20 μm to the mixture of titanate coupling agent NDZ-101 and alcohol, in which titanate coupling agent NDZ-101 The mass ratio of alcohol to alcohol is 1:15, treated at 100°C for 3 hours, cleaned with deionized water and alcohol, and dried in a drying oven for 2 hours;

[0031] (2) Polyvinyl alcohol coating treatment on the surface of zinc oxide powder: place the zinc oxide powder treated in the first step in a polyvinyl alcohol aqueous solution, where the concentration range of the polyvinyl alcohol aqueous solution is 20%, and the zinc oxide powder The mass ratio of polyvinyl alcohol to aqueous solution is 1:5, stirred at 80°C for 1 hour, then centrifuged, then washed with deionized water to obtain fluorinated zinc oxide powder coated with polyvinyl alcohol on the surface ;...

Embodiment 3

[0034] The method is the same as in Example 2, except that zinc oxide powder with a particle size of 5 μm is used to obtain zinc oxide powder with surface fluorination treatment.

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Abstract

The invention relates to a method for uniformly fluorinating zinc oxide powder. The method comprises the following steps: (1) treating the zinc oxide powder with a surface coupling agent: adding the zinc oxide powder into a mixed solution of a titanate coupling agent and alcohol; treating at the temperature of 90 to 100 DEG C for 3 to 5h; after washing, drying in a drying box for 2h; (2) carryingout surface polyvinyl alcohol coating treatment on the zinc oxide powder: putting the zinc oxide powder treated by step (1) into a polyvinyl alcohol water solution; after reacting; then centrifuging and washing with de-ionized water to obtain fluorinated zinc oxide powder with a surface coated with the polyvinyl alcohol; (3) carrying out fluorination treatment on the zinc oxide powder: adding thezinc oxide powder treated by above steps into a polytetrafluoroethylene container containing a certain amount of a hydrofluoric acid solution; reacting for 5 to 20min; then centrifuging and washing with the de-ionized water to obtain the uniformly fluorinated zinc oxide powder. Compared with the prior art, the method provided by the invention has the advantages of simplicity and feasibility, low cost, convenience and rapidness and the like.

Description

technical field [0001] The invention relates to the field of material preparation, in particular to a method for uniformly fluorinating zinc oxide powder. Background technique [0002] In recent years, zinc oxide nanopowder / polymer composites have attracted much attention due to their unique properties. Zinc oxide nanopowder / polymer composites combine the respective advantages of the two materials: both the mechanical properties of polymers and the It has the characteristics of good chemical stability and good processability, and retains the high mobility and optical properties of zinc oxide nanopowders. It has been widely used in many fields such as chemical industry, biomedicine, and semiconductor light-emitting devices. However, the zinc oxide nanopowder / polymer composite material is a blend of zinc oxide nanopowder and organic polymer material, and there is incompatibility between the zinc oxide nanopowder and the polymer phase, resulting in the zinc oxide nanopowder Lo...

Claims

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Application Information

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IPC IPC(8): C01G9/02B82Y40/00
CPCB82Y40/00C01G9/02C01P2002/85C01P2002/88C01P2004/61C01P2004/62C01P2004/64
Inventor 刘少辉王娇郝好山赵利敏
Owner HENAN INST OF ENG
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