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Synthesis of micron and nano zinc oxide fiber by alloy gas controllable evaporation method

A nanofiber and zinc oxide technology, applied in the direction of zinc oxide/zinc hydroxide, etc., can solve the problems of complex process, difficult scale, low yield, etc., and achieve rapid production process, controllable dimension, easy large-scale continuous production Effect

Inactive Publication Date: 2006-06-21
HUAZHONG NORMAL UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0005] The purpose of the present invention is to overcome the shortcomings of long-term pretreatment, complicated process, low yield and difficulty in scale in the above-mentioned production of zinc oxide fibers

Method used

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  • Synthesis of micron and nano zinc oxide fiber by alloy gas controllable evaporation method
  • Synthesis of micron and nano zinc oxide fiber by alloy gas controllable evaporation method
  • Synthesis of micron and nano zinc oxide fiber by alloy gas controllable evaporation method

Examples

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Effect test

Embodiment 1

[0020] Example 1: In an open high-temperature silicon-molybdenum rod program temperature-controlled reaction furnace (GWDL-1KY, Luoyang Weida High Temperature Instrument Co., Ltd.), at 1250 ° C, copper-zinc mixed powder with a copper-zinc weight ratio of 50% was mixed in the air Put it in the reaction temperature zone, and the reaction ends in 10 minutes. A large amount of white flocculent product can be received in the downwind direction.

[0021] XRD diffraction analysis shows that the white floc product is zinc oxide with excellent crystallization degree, and no other phases of copper or copper oxide appear. The zinc oxide observed with a scanning electron microscope (SEM) is a uniform three-needle or four-needle fiber (see image 3 ). The dimensions of a single needle are 100nm and the length is 1.5um.

Embodiment 2

[0022] Embodiment 2: In the open high-temperature silicon-molybdenum rod programmed temperature control reaction furnace, at 1250 ° C, a commercially pure brass block (copper content 50wt%-65wt%) is placed in the reaction temperature zone in the air, and reacted for 15 minutes Finish. A large amount of white flocculent product can be received in the downwind direction.

[0023] XRD diffraction analysis shows that the white floc product is zinc oxide with excellent crystallization degree, and no other phases of copper or copper oxide appear. With a scanning electron microscope (SEM) ( Figure 4 a) and transmission electron microscopy (TEM) ( Figure 4 b) It is observed that the obtained zinc oxide is a one-dimensional nano-dimensional linear product. The dimensions of zinc oxide nanowires vary from 10-150nm, but most of them have dimensions of 50-100nm, the distribution of dimensions is relatively uniform, and the length is 3-8um.

[0024] The leftovers after the reaction o...

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Abstract

The invention provides a method for synthesizing zinc oxide micron and nanofibers by an alloy gas controllable evaporation method. The method utilizes copper-zinc mixed powder or directly uses commercially pure brass blocks as reactants, and directly oxidizes metal zinc vapor released from molten reactants at high temperature in air. The dimension of the synthesized zinc oxide micron fiber is 0.1μm-0.6μm, the length of a single needle is 1μm-3μm, the dimension of the synthesized zinc oxide nanowire fiber is 10-150nm, most of the dimensions are 50-100nm, and the length is 3-8μm .

Description

Technical field [0001] The invention belongs to the synthesis method of zinc oxide micro and nano fibers. Background technique [0002] Zinc oxide fiber is widely used as reinforcement and toughening agent of composite materials, shock absorption, impact resistance and sound insulation materials, wear-resistant and anti-skid materials, coatings, antistatic materials, and wave-absorbing materials. It plays a huge role in national defense, electronics, chemical industry, transportation and other fields. At present, there are two main methods for synthesizing micron and nanometer zinc oxide fibers: mechanized pre-oxidation of zinc powder (oxidation roasting method) and direct oxidation roasting of metal zinc powder. [0003] The former was developed by Matsushita Electric Corporation of Japan in the late 1980s. The principle process is: first mix the raw material zinc powder with deionized water in a certain proportion, activate it in a stamping or vortex cutting mill, and the...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C01G9/03
Inventor 唐成春程春丁晓夏祁守仁
Owner HUAZHONG NORMAL UNIV
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