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A method for synthesizing zirconium carbide composite ceramic precursor thermosetting resin

A technology of complex phase ceramics and zirconium carbide, which is applied in the field of low-temperature sintering to prepare ZrC multiphase ceramics, can solve the problems that it is difficult to achieve co-sintering of various ceramic powders, achieve good processing technology, reduce manufacturing costs, and increase yield. Effect

Inactive Publication Date: 2017-12-01
TAISHAN MEDICAL UNIV
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  • Summary
  • Abstract
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  • Application Information

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Problems solved by technology

However, co-sintering of various ceramic powders is difficult to achieve

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0028] In a 1000mL glass bottle equipped with a reflux condenser, a thermometer and an addition funnel (equipped with a nitrogen protection system), add 120ml (0.3mol) n-BuLi n-hexane solution, and cool the reaction bottle to -30°C; add 13.2g dropwise (0.1mol) trichlorethylene, control the rate of addition to keep the internal temperature below -20°C; after the dropwise addition, react with a natural temperature rise for 2 hours to obtain a milky white ethynyl dilithium salt solution. Referring to the same method, add 80ml (0.2mol) n-BuLi n-hexane solution to another 250mL reaction flask, and cool the reaction flask to -20°C; add dropwise 60mL of toluene containing 23.6g (0.1mol) p-dibromobenzene solution, control the rate of addition to keep the internal temperature below 0°C; after the dropwise addition, react with a natural temperature rise for 3 hours to obtain a translucent brown-red phenyl dilithium salt solution. The phenyl dilithium salt solution was added to the alkyn...

Embodiment 2

[0032] In a 1000mL glass bottle equipped with a reflux condenser, a thermometer and an addition funnel (equipped with a nitrogen protection system), add 120ml (0.3mol) n-BuLi n-hexane solution, and cool the reaction bottle to -30°C; add 13.2g dropwise (0.1mol) trichlorethylene, control the rate of addition to keep the internal temperature below -20°C; after the dropwise addition, react with a natural temperature rise for 2 hours to obtain a milky white ethynyl dilithium salt solution. The reaction flask was cooled to -30°C again, and 29.3g (0.1mol) of C p 2 ZrCl 2 100mL of toluene solution was added dropwise to the above lithium salt solution, and the internal temperature was maintained not to exceed -10°C during the dropwise addition process; the temperature was raised naturally for 3 hours to obtain a cloudy solution.

[0033] Filtrate through an online filtration system to obtain a white filter cake and a brown-red transparent filtrate. The filtrate was evaporated on a ro...

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Abstract

The purpose of the present invention is to disclose a preparation method of zirconium-containing thermosetting ceramic precursor polyzirconocene ethynylene resin, a) preparation of ethynyl dilithium salt; b) preparation of phenyl dilithium salt; c) mixing the above two solution, d) desalting by filtration; the present invention can meet liquid phase impregnation process (such as resin transfer molding process, high-pressure impregnation process, autoclave process), and is suitable as a matrix of high-performance ceramic matrix composite materials.

Description

technical field [0001] The invention discloses a method for synthesizing a ZrC multiphase ceramic precursor resin and a zirconium-containing thermosetting resin, and a technology for preparing ZrC multiphase ceramics by sintering at low temperature, belonging to the technical field of preparation of special ceramic materials. technical background [0002] Zirconium carbide (melting point 3540°C) is an important high-temperature structural material with ultra-high melting point, high strength and corrosion resistance. Generally, zirconium carbide powder is obtained by carbothermal reduction of zirconia, and then isostatically pressed into a blank and high-temperature sintered. Monolithic ceramics, the process requires high pressure and temperature. The brittleness of single-phase ceramics is very high, which is a restrictive factor that prevents ceramic materials from being widely used. It is an effective method to improve the toughness and mechanical properties of ceramics ...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C08G61/12C04B35/56C04B35/52
CPCC04B35/52C04B35/5622C04B2235/48C08G61/12C08G2261/12C08G2261/344
Inventor 王者辉孙红张锦锦徐秀鸿
Owner TAISHAN MEDICAL UNIV
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