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tic-zro 2 Preparation method of composite powder and composite fiber

A composite powder and composite fiber technology, applied in the chemical characteristics of fibers, rayon manufacturing, textiles and papermaking, etc., can solve the problem of uniformity dependence of finished materials, and achieve the effects of good fluidity, simple raw materials, and uniform components

Active Publication Date: 2021-12-07
CHANGSHU INSTITUTE OF TECHNOLOGY
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0004] For above-mentioned prior art defect, the task of the present invention is to provide a kind of TiC-ZrO 2 The preparation method of composite powder, and provide a kind of TiC-ZrO 2 The preparation method of composite fiber solves the problem that the preparation of nano-scale composite materials requires the use of nano-scale raw materials, and solves the problem that the uniformity of finished materials depends on the adequacy of raw material powder mixing

Method used

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  • tic-zro <sub>2</sub> Preparation method of composite powder and composite fiber
  • tic-zro <sub>2</sub> Preparation method of composite powder and composite fiber
  • tic-zro <sub>2</sub> Preparation method of composite powder and composite fiber

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Embodiment 1

[0032] Weigh 0.015mol butyl titanate (TBOT), 0.015mol n-butoxide zirconium (Zr(OBu) 4 ) and 0.096mol acetylacetone (Hacac) were heated and mixed uniformly in an oil bath at 85°C for 48 hours, and 0.168mol ultrapure water was slowly added dropwise at this temperature, and the temperature was raised to 100°C and heated in an oil bath for 5 hours to hydrolyze and polycondense A uniform, stable and transparent liquid precursor is prepared. The precursor was cured in an air atmosphere at 150°C for 8 hours, then kept at 800°C for 2 hours under an Ar atmosphere, and then raised to 1200°C for 2 hours to prepare TiC-ZrO 2 Composite powder material. Prepared TiC-ZrO 2 XRD and SEM pictures of composite powder figure 1 and figure 2 shown.

Embodiment 2

[0034] Weigh 0.015mol butyl titanate (TBOT), 0.015mol n-butoxide zirconium (Zr(OBu) 4 ) and 0.12mol acetylacetone (Hacac) were heated and mixed uniformly in an oil bath at 95°C for 60 hours, and slowly added dropwise 0.21mol ultrapure water at this temperature, and the temperature was raised to 110°C and heated in an oil bath for 6 hours to hydrolyze and polycondense A stable, uniform, stable and transparent liquid precursor is prepared. The precursor was cured in an air atmosphere at 200°C for 6 hours, then kept at 800°C for 3 hours under an Ar atmosphere, and then kept at 1300°C for 1 hour to prepare TiC-ZrO 2 Composite powder material. Prepared TiC-ZrO 2 SEM and Mapping pictures of composite powder image 3 and Figure 4 shown.

Embodiment 3

[0036] Weigh 0.015mol butyl titanate (TBOT), 0.015mol n-butoxide zirconium (Zr(OBu) 4) and 0.144mol acetylacetone (Hacac) were heated and mixed uniformly in an oil bath at 105°C for 72 hours, and at this temperature, 0.24mol ultrapure water was slowly added dropwise, and the temperature was raised to 120°C and heated in an oil bath for 8 hours to hydrolyze and polycondense A stable, uniform, stable and transparent liquid precursor is prepared. The precursor was cured in an air atmosphere at 250°C for 4 hours, then kept at 800°C for 4 hours under an Ar atmosphere, and then kept at 1400°C for 1 hour to prepare TiC-ZrO 2 Composite powder material. Prepared TiC-ZrO 2 SEM and Mapping pictures of composite powder Figure 5 and Figure 6 shown.

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Abstract

The invention discloses a TiC-ZrO 2 The preparation method of the composite powder comprises the following steps: 1. Weigh tetrabutyl titanate, zirconium n-butoxide and acetylacetone, heat and mix them evenly in an oil bath, then slowly add deionized water dropwise and continue heating and stirring in an oil bath to prepare Obtain a transparent and stable polytitanium-zircone precursor solution; 2. After the precursor solution is pretreated, high-temperature heat treatment is carried out under a protective atmosphere to prepare TiC-ZrO 2 Composite powder. The invention also discloses a TiC-ZrO 2 The preparation method of the composite fiber comprises adding PVP as the spinning aid to perform electrospinning after obtaining the polytitanium-zircone precursor solution, performing pretreatment on the precursor fiber and performing high-temperature heat treatment under a protective atmosphere to prepare TiC-Ziroxane ZrO 2 Composite fibers. The method of the present invention can obtain TiC-ZrO with uniform structure 2 Composite materials, the preparation process is suitable for mass production.

Description

technical field [0001] The invention relates to a preparation method of a TiC composite material, in particular to a TiC-ZrO 2 The preparation method of composite powder and composite fiber. Background technique [0002] C / SiC composites have received extensive attention and research due to their low density and outstanding thermomechanical properties, but the excessively high oxidizing environment conditions restrict the application of C / SiC composites, so the preparation of ultra-high temperature ceramic coatings can be used Improve the oxidation and ablation resistance of C / SiC composites at high temperatures. In carbide ceramics, SiC and HfC have been widely studied in recent years, but under ultra-high temperature conditions, they cannot meet the requirements, SiC will be rapidly oxidized and evaporated, and HfC will form porous HfO 2 , so none of them are suitable coating materials. As a typical refractory metal carbide (melting point 3140°C), TiC powder has the cha...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C04B35/626C04B35/622C04B35/56C04B35/48D01F9/10D01F1/10
CPCC04B35/48C04B35/5611C04B35/6225C04B35/62277C04B35/62675C04B2235/3244C04B2235/3843C04B2235/656C04B2235/6567C04B2235/658C04B2235/94D01F1/10D01F9/10
Inventor 余磊纪网金宋云张世文刘辉王哲飞刘泉韦波王旭红
Owner CHANGSHU INSTITUTE OF TECHNOLOGY