Eine Plattform für die Wissenschaft: Bauingenieurwesen, Architektur und Urbanistik
Eine Plattform für die Wissenschaft: Bauingenieurwesen, Architektur und Urbanistik
High-thermal-conductivity low-expansion carbon ceramic material and preparation method thereof
The invention discloses a high-thermal-conductivity low-expansion carbon ceramic material and a preparation method thereof.The preparation method comprises the following steps that pyrolytic carbon is deposited on a carbon fiber preform, then heat treatment is conducted, and a preform with an interface layer is prepared; the preparation method comprises the following steps: firstly dipping in a slurry A consisting of organic silicon resin, a curing agent, a catalyst and an inorganic filler, curing and cracking, then dipping in a slurry B consisting of resin, a curing agent and a solvent, and curing and cracking to obtain a carbon-carbon composite material; and finally, carrying out ceramic treatment to obtain the product. The high-thermal-conductivity low-expansion carbon-ceramic material prepared by the preparation method disclosed by the invention has the advantages that on one hand, the thermal conductivity is effectively improved, the heat dissipation of components at high temperature is facilitated, on the other hand, the thermal stress damage in the preparation process is reduced, the mechanical property of the material is improved, and the high-thermal-conductivity low-expansion carbon-ceramic material can be suitable for preparing flat plate components such as brake discs and brake pads.
本发明公开了一种高导热低膨胀碳陶材料及其制备方法，其制备方法包括以下步骤：在碳纤维预制体上沉积热解碳，然后进行热处理，制得具备界面层的预制体；然后先浸渍于有机硅树脂、固化剂、催化剂和无机填料组成的浆料A，经固化、裂解后，再浸渍于树脂、固化剂和溶剂组成的浆料B，经固化、裂解后，制得碳碳复合材料；最后经过陶瓷化处理，制得。本发明制得的高导热低膨胀碳陶材料一方面有效提高了导热性能，有利于构件高温时进行散热，另一方面减少了制备过程中的热应力损伤，提高了材料的力学性能，可适用于刹车盘、刹车片等平板构件的制备。
High-thermal-conductivity low-expansion carbon ceramic material and preparation method thereof
The invention discloses a high-thermal-conductivity low-expansion carbon ceramic material and a preparation method thereof.The preparation method comprises the following steps that pyrolytic carbon is deposited on a carbon fiber preform, then heat treatment is conducted, and a preform with an interface layer is prepared; the preparation method comprises the following steps: firstly dipping in a slurry A consisting of organic silicon resin, a curing agent, a catalyst and an inorganic filler, curing and cracking, then dipping in a slurry B consisting of resin, a curing agent and a solvent, and curing and cracking to obtain a carbon-carbon composite material; and finally, carrying out ceramic treatment to obtain the product. The high-thermal-conductivity low-expansion carbon-ceramic material prepared by the preparation method disclosed by the invention has the advantages that on one hand, the thermal conductivity is effectively improved, the heat dissipation of components at high temperature is facilitated, on the other hand, the thermal stress damage in the preparation process is reduced, the mechanical property of the material is improved, and the high-thermal-conductivity low-expansion carbon-ceramic material can be suitable for preparing flat plate components such as brake discs and brake pads.
本发明公开了一种高导热低膨胀碳陶材料及其制备方法，其制备方法包括以下步骤：在碳纤维预制体上沉积热解碳，然后进行热处理，制得具备界面层的预制体；然后先浸渍于有机硅树脂、固化剂、催化剂和无机填料组成的浆料A，经固化、裂解后，再浸渍于树脂、固化剂和溶剂组成的浆料B，经固化、裂解后，制得碳碳复合材料；最后经过陶瓷化处理，制得。本发明制得的高导热低膨胀碳陶材料一方面有效提高了导热性能，有利于构件高温时进行散热，另一方面减少了制备过程中的热应力损伤，提高了材料的力学性能，可适用于刹车盘、刹车片等平板构件的制备。
High-thermal-conductivity low-expansion carbon ceramic material and preparation method thereof
一种高导热低膨胀碳陶材料及其制备方法
DONG QIANG (Autor:in) / WANG FUYUAN (Autor:in) / SHI SITAO (Autor:in) / WANG JING (Autor:in) / ZHENG WEI (Autor:in)
26.04.2024
Patent
Elektronische Ressource
Chinesisch
IPC:
C04B
Kalk
,
LIME
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