Preparation method of zirconium diboride (ZrB2) ceramic precursor

A ceramic precursor, zirconium diboride technology, applied in the field of material chemistry, can solve the problems that cannot meet the requirements of C/C composite materials, cannot form a homogeneous impregnation solution, etc., achieve high ceramic conversion rate and broad application prospects Effect

Inactive Publication Date: 2018-03-20
SHAANXI SHENGMAI PETROLEUM
View PDF0 Cites 6 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Due to the ZrB prepared by the above method 2 None of the ceramic precursors can form a homogeneous impregnation solution, which cannot meet the requirements of the PIP process for th

Method used

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
View more

Examples

Experimental program
Comparison scheme
Effect test

Embodiment Construction

[0020] A kind of preparation method of zirconium diboride ceramic precursor, adopts following steps:

[0021] Step 1: Ingredients:

[0022] Zirconium oxychloride octahydrate, o-hydroxybenzyl alcohol, acetylacetone and boric acid;

[0023] Step 2: Synthesis of zirconium-containing polymer PZS:

[0024] Acetylacetone (2g, 0.02mol), o-hydroxybenzyl alcohol, triethylamine (2.02g, 0.02mol) and methanol (25mL) were mixed evenly, and then added dropwise to a solution containing zirconium oxychloride (3.22 g , 0.01mol) methanol solution (50mL) in a three-necked flask;

[0025] After the dropwise addition, the reaction was stirred and reacted at room temperature for 6 hours; the reaction solution was sequentially subjected to steps such as rotary evaporation, THF dissolution, filtration, filtrate concentration, n-hexane precipitation, and vacuum drying at room temperature to obtain a light yellow zirconium-containing polymer powder;

[0026] Step 3: ZrB 2 Preparation of ceramic pre...

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to view more

PUM

No PUM Login to view more

Abstract

The invention relates to the technical field of material chemistry, in particular to a method for preparing a zirconium boride ceramic precursor. A preparation method of zirconium diboride ceramic precursor adopts the following steps: step 1: raw material; step 2: synthesis of zirconium-containing polymer PZS; step 3: preparation of ZrB2 ceramic precursor. In the present invention, zirconium oxychloride, acetylacetone and o-hydroxybenzyl alcohol undergo polycondensation reaction under alkaline conditions to generate a zirconium-containing polymer, and the polymer is blended with boric acid in a solution to obtain a ZrB2 ceramic precursor. The ceramic precursor prepared by this method can form a homogeneous impregnation solution, has a high ceramic conversion rate, meets the requirements of the PIP process, and has broad application prospects in the construction of ZrB2 ceramic modified C/C composites.

Description

technical field [0001] The invention relates to the technical field of material chemistry, in particular to a method for preparing a zirconium boride ceramic precursor. Background technique [0002] In recent years, carbon / carbon composites modified by refractory metal carbon / boride ceramics have attracted extensive attention because of their excellent properties such as low density, high specific strength, high specific modulus, anti-ablation, and thermal shock resistance. Its outstanding high-temperature oxidation resistance makes this type of composite material show attractive application prospects in hypersonic vehicles. At present, this carbon-ceramic composite material is mainly constructed by the precursor impregnation and cracking) process, that is, the porous low-density carbon fiber preform is first immersed in the refractory metal carbon / boride ceramic precursor solution, through molecular diffusion and osmosis. The macromolecules of the precursor enter the matri...

Claims

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to view more

Application Information

Patent Timeline
no application Login to view more
IPC IPC(8): C04B35/58C04B35/622
CPCC04B35/58078C04B35/622C04B2235/6562C04B2235/658
Inventor 王耀斌
Owner SHAANXI SHENGMAI PETROLEUM
Who we serve
  • R&D Engineer
  • R&D Manager
  • IP Professional
Why Eureka
  • Industry Leading Data Capabilities
  • Powerful AI technology
  • Patent DNA Extraction
Social media
Try Eureka
PatSnap group products

Browse by: Latest US Patents, China's latest patents, Technical Efficacy Thesaurus, Application Domain, Technology Topic.

© 2024 PatSnap. All rights reserved.Legal|Privacy policy|Modern Slavery Act Transparency Statement|Sitemap