Electrostatic spinning preparation method of ceramic nanometer composite fibers

A nano-composite fiber and electrospinning technology, which is applied in the field of material manufacturing, can solve the problems of not being able to meet the diversity of scientific research and production, few types of ceramic nano-composite fibers, and many restrictions on raw material selection conditions, so as to meet the requirements of scientific research and production diversity. requirements, wide selection conditions, and a wide range of options

Inactive Publication Date: 2010-12-08
XIAN UNIV OF TECH
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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 provide a method for preparing ceramic nanocomposite fibers by electrospinning, which solves the limitations of raw material selection conditions in

Method used

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  • Electrostatic spinning preparation method of ceramic nanometer composite fibers

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Embodiment 1

[0030] By volume percentage, take the boron carbide (B) that particle diameter is 10nm 4 C) 3% of nanoparticles, 15% of zinc acetate, 10% of polyvinyl alcohol (PVA for short), 72% of deionized water, and 100% of the total volume. PVA is added into deionized water, heated in a water bath and magnetically stirred to obtain a PVA solution with a certain viscosity. Then dissolve zinc acetate in the PVA solution, heat, stir and age for 2 hours to obtain a zinc acetate / PVA solution with uniform composition. then B 4 C nanoparticles were added to the zinc acetate / PVA solution, stirred continuously for 1h, and then the mixed solution was ultrasonically dispersed for 0.5h, and swelled at constant temperature for 0.5h to form B with uniform composition. 4 C / zinc acetate / PVA spinning solution. The spinning solution was poured into a syringe, and the flattened injection needle was used as a capillary for jetting fine flow. During the electrospinning process, the voltage was 40kV, the c...

Embodiment 2

[0033] By volume percentage, silicon nitride (Si 3 N 4) nanoparticles 4%, tetraethyl orthosilicate 8%, polyvinylpyrrolidone (PVP) 5%, isopropanol 83%, the total volume is 100%. Add polyvinylpyrrolidone (PVP) into isopropanol, heat in a water bath and stir magnetically to prepare a PVP solution with a certain viscosity. Then dissolve ethyl orthosilicate in PVP solution, heat, stir and age for 12 hours to obtain ethyl orthosilicate / PVP solution with uniform composition. Si 3 N 4 Add the nanoparticles into the solution, keep stirring for 1 h, then ultrasonically disperse the mixed solution for 0.5 h, and swell at constant temperature for 0.5 h to form Si with uniform composition. 3 N 4 / tetraethyl silicate / PVP spinning solution. Pour the spinning solution into the syringe, and use the flattened injection needle as the capillary for jetting fine flow. During the electrospinning process, the voltage is 10kV, the collection distance is 30cm, the spinning solution propulsion sp...

Embodiment 3

[0036] By volume percentage, titanium oxide (TiO) with a particle size of 30nm 2 ) nanoparticles 8%, butyl titanate 12%, polyvinyl butyral (PVB) 30%, methylene chloride 50%, the total volume is 100%. Add polyvinyl butyral (PVB) into dichloromethane, heat in a water bath and stir magnetically to prepare a PVB solution with a certain viscosity. Then butyl titanate was added to the PVB solution, heated and stirred and aged for 4 hours to obtain a butyl titanate / PVB solution with uniform composition. TiO 2 The nanoparticles were added to the butyl titanate / PVB solution, stirred continuously for 2 hours, then the mixed solution was ultrasonically dispersed for 0.5 hours, and swelled at a constant temperature for 0.5 hours to form a uniform TiO 2 / Butyl titanate / PVB spinning solution. Pour the spinning solution into the syringe, and use the flattened injection needle as the capillary for jetting fine flow. During the electrospinning process, the voltage is 30kV, the collection di...

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Abstract

The invention discloses an electrostatic spinning preparation method of ceramic nanometer composite fibers, comprising the following concrete steps of: firstly, according to volume percentage, weighing 3-10 percent of ceramic nanometer particles with the partilce size of 10-300 nm, 3-20 percent of ceramic precursor, 5-30 percent of spinnable polymer and 40-89 percent of solvent with the total volume of 100 percent; secondly, adding the spinnable polymer into the solvent, heating in water bath and magnetically stirring; thirdly, adding the ceramic precursor into the spinnable polymer solution obtained in the second step, heating in water bath, magnetically stirring and ageing; fourthly, adding the ceramic nanometer particles into the ceramic precursor spinnable solution obtained in the third step, heating at constant temperature in the water bath and forming a spinning solution by carrying out ultrasonic dispersion and constant temperature swelling; fifthly, preparing composite nanometer fibers by the spinning solution according to an electrostatic spinning technology; and sixthly, obtaining the ceramic nanometer composite fibers by sintering the composite nanometer fibers. In the method, raw materials have wide selection conditions and wide optional range.

Description

technical field [0001] The invention belongs to the technical field of material manufacture, and in particular relates to an electrospinning preparation method of ceramic nanocomposite fibers. Background technique [0002] There are many kinds of ceramic fibers with excellent performance, and they have a wide range of applications. According to different properties, nanomaterials can be divided into metal nanomaterials, semiconductor nanomaterials, nanoceramic materials, organic nanomaterials, etc. When the above nanostructure units are combined with other materials, they form nanocomposites. Nanocomposites are widely used in aerospace, national defense, transportation, sports and other fields due to their excellent comprehensive properties, especially the designability of their properties, among which nanocomposites are the most attractive part. Nanocomposite materials refer to composite materials composed of two or more different materials, and at least one dimension in t...

Claims

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Application Information

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IPC IPC(8): C04B35/622D01D5/00
Inventor 赵康滕乐天汤玉斐徐雷
Owner XIAN UNIV OF TECH
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