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Method for quick synthesis of zinc oxide whiskers by means of microwaves

A zinc oxide whisker and microwave synthesis technology, which is applied in the field of functional ceramics, can solve the problems affecting the market price and popularization and application of zinc oxide whisker products, which is not conducive to popularization and application, and the market fluctuates greatly, so as to reduce the whisker preparation process, The effect of reducing equipment investment and reducing production costs

Inactive Publication Date: 2016-09-07
梁宝岩
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0003] At present, the method for preparing zinc oxide whiskers is mainly to prepare four-needle and multi-needle zinc oxide whiskers from metal zinc. Since the price of zinc is relatively expensive and the market fluctuates greatly, it directly affects the market price of zinc oxide whiskers. and promotional applications
And adopt the zinc-containing compound such as zinc oxide as raw material, adopt the method for vapor phase evaporation to prepare tetraacicular zinc oxide whisker, productive rate is lower, is unfavorable for popularizing and applying

Method used

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  • Method for quick synthesis of zinc oxide whiskers by means of microwaves
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  • Method for quick synthesis of zinc oxide whiskers by means of microwaves

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Effect test

Embodiment 1

[0023] A method for rapidly synthesizing zinc oxide whiskers utilizing microwaves, comprising the steps of:

[0024] 1) Mixing treatment: Take iron (Fe) powder with a particle size of 53 microns and high-purity zinc oxide powder with a particle size of 1 micron (purity 99.0wt.%) as raw materials according to a molar ratio of 2:1, and then use a ball mill to mill Mix well for 5 hours, after ball milling, dry in an oven at 70°C to obtain dry powder;

[0025] 2) Microwave synthesis: Put the dry powder obtained in step 1) into a quartz crucible, and place it in a microwave high-temperature furnace for microwave synthesis. The heating rate of the microwave high-temperature furnace is 300°C / min. The white flocculent product obtained after the furnace is cooled is tetraacicular zinc oxide powder (such as figure 1 shown), with a diameter of about 2 μm and a length of about 8 μm.

Embodiment 2

[0027] A method for rapidly synthesizing zinc oxide whiskers utilizing microwaves, comprising the steps of:

[0028] 1) Mixing treatment: Take titanium (Ti) powder with a particle size of 74 microns and high-purity zinc oxide powder with a particle size of 1 micron as raw materials at a molar ratio of 1.2:1, and then use a ball mill for 5 hours to fully mix them evenly. After ball milling, place in an oven and dry at 70°C to obtain dry powder;

[0029] 2) Microwave synthesis: Put the dry powder obtained in step 1) into a quartz crucible, and place it in a microwave high-temperature furnace for microwave synthesis. The heating rate of the microwave high-temperature furnace is 350°C / min. The white flocculent product obtained after furnace cooling is needle-shaped zinc oxide powder (such as figure 2 and 3 shown), the diameter is about 0.2-0.5 μm, and the length is about 2-4 μm.

Embodiment 3

[0031] A method for rapidly synthesizing zinc oxide whiskers utilizing microwaves, comprising the steps of:

[0032] 1) Mixing treatment: Take manganese (Mn) powder with a particle size of 53 microns and high-purity zinc oxide powder with a particle size of 1 micron as raw materials according to a molar ratio of 1.5:1, and then use a ball mill for 5 hours to fully mix them evenly. After ball milling, place in an oven and dry at 70°C to obtain dry powder;

[0033] 2) Microwave synthesis: Put the dry powder obtained in step 1) into a quartz crucible, and place it in a microwave high-temperature furnace for microwave synthesis. The heating rate of the microwave high-temperature furnace is 300°C / min. The white flocculent product obtained after the furnace is cooled is tetraacicular zinc oxide powder (such as Figure 4 shown), with a diameter of about 0.2 μm and a length of about 1 μm.

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Abstract

The invention relates to a method for quick synthesis of zinc oxide whiskers by means of microwaves. The method comprises the steps of 1, mixing, wherein zinc oxide powder and metal powder are taken in proportion and subjected to ball milling for 5-8 h, and then obtained powder is placed in an oven to be dried at 50-90 DEG C so that dried powder can be obtained; 2, microwave synthesis, wherein the dried powder obtained in step 1 is placed in a microwave high-temperature furnace for microwave synthesis, the heating rate of the microwave high-temperature furnace is 200-600 DEG C / min, heat insulation reaction is conducted for 1-5 min when temperature reaches 700-1200 DEG C, and then the zinc oxide whiskers are obtained. The process is simple, cost is low, operability is high, and the one-phase pure zinc oxide whiskers can be obtained at a low temperature within a short heat insulation time.

Description

technical field [0001] The invention belongs to the technical field of functional ceramics, and more specifically relates to a method for preparing zinc oxide whisker materials using microwave rapid synthesis reaction technology. Background technique [0002] Zinc oxide is an important semiconductor material that exhibits many special properties, such as fluorescence, piezoelectricity, ability to absorb and scatter ultraviolet light, etc., and utilizes its wonderful properties in light, electricity, magnetism, and sensitivity. In the past ten years, it has been found that nano-zinc oxide exhibits many special properties in catalysis, optics, magnetism and mechanics, and has very important application value in the fields of ceramics, chemical industry, electronics, optics, biology and medicine. Zinc oxide does not have the performance. Therefore, scientific research and application research on nano-zinc oxide is one of the most important and cutting-edge fields of materials ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C30B1/00C30B29/16C30B29/62
CPCC30B1/00C30B29/16C30B29/62
Inventor 梁宝岩胡宏涛张旺玺
Owner 梁宝岩
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