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High-temperature and high-pressure synthesis method of modified carbon fiber ceramic composite material
The invention discloses a high-temperature and high-pressure synthesis method of a modified carbon fiber ceramic composite material, and belongs to the technical field of preparation of carbon fiber-ceramic composite materials. The preparation method comprises the following steps: hydrolyzing a silane coupling agent in an alcohol-water solution for 0.5-24 hours, adding polyacrylonitrile (PAN) carbon fibers, reacting for 0.5-24 hours, carrying out suction filtration and drying to obtain modified carbon fibers, loading the obtained modified carbon fibers into an assembly block of a cubic press, and sintering and pressing for 10-30 minutes under the conditions of 1000-1500 DEG C and 1-5 GPa to obtain the block carbon fiber ceramic composite material. The ceramic composite material with the carbon fibers distributed in a three-dimensional network form is obtained by taking the nano silicon oxide as a high-strength/high-toughness binding phase among the carbon fibers through a high-temperature and high-pressure technical means; meanwhile, the synthetic material also has good self-lubricating performance.
本发明的一种改性碳纤维陶瓷复合材料的高温高压合成方法属于碳纤维‑陶瓷复合材料的制备技术领域。将硅烷偶联剂在醇水溶液中水解0.5～24小时，加入聚丙烯腈基(PAN)碳纤维，反应0.5～24小时，抽滤烘干后得到改性碳纤维，将得到的改性碳纤维装于六面顶压机的组装块中，在1000～1500℃、1～5GPa条件下烧结压制10～30分钟，得到块体的碳纤维陶瓷复合材料。本发明通过高温高压技术手段，以纳米氧化硅为碳纤维间的高强/高韧粘结相，获得了碳纤维呈三维网状形态分布的陶瓷复合材料；同时，合成材料还具有良好的自润滑性能。
High-temperature and high-pressure synthesis method of modified carbon fiber ceramic composite material
The invention discloses a high-temperature and high-pressure synthesis method of a modified carbon fiber ceramic composite material, and belongs to the technical field of preparation of carbon fiber-ceramic composite materials. The preparation method comprises the following steps: hydrolyzing a silane coupling agent in an alcohol-water solution for 0.5-24 hours, adding polyacrylonitrile (PAN) carbon fibers, reacting for 0.5-24 hours, carrying out suction filtration and drying to obtain modified carbon fibers, loading the obtained modified carbon fibers into an assembly block of a cubic press, and sintering and pressing for 10-30 minutes under the conditions of 1000-1500 DEG C and 1-5 GPa to obtain the block carbon fiber ceramic composite material. The ceramic composite material with the carbon fibers distributed in a three-dimensional network form is obtained by taking the nano silicon oxide as a high-strength/high-toughness binding phase among the carbon fibers through a high-temperature and high-pressure technical means; meanwhile, the synthetic material also has good self-lubricating performance.
本发明的一种改性碳纤维陶瓷复合材料的高温高压合成方法属于碳纤维‑陶瓷复合材料的制备技术领域。将硅烷偶联剂在醇水溶液中水解0.5～24小时，加入聚丙烯腈基(PAN)碳纤维，反应0.5～24小时，抽滤烘干后得到改性碳纤维，将得到的改性碳纤维装于六面顶压机的组装块中，在1000～1500℃、1～5GPa条件下烧结压制10～30分钟，得到块体的碳纤维陶瓷复合材料。本发明通过高温高压技术手段，以纳米氧化硅为碳纤维间的高强/高韧粘结相，获得了碳纤维呈三维网状形态分布的陶瓷复合材料；同时，合成材料还具有良好的自润滑性能。
High-temperature and high-pressure synthesis method of modified carbon fiber ceramic composite material
一种改性碳纤维陶瓷复合材料的高温高压合成方法
XU DAN (Autor:in) / GUO YU (Autor:in) / FU YUBO (Autor:in) / DONG JUNYAN (Autor:in) / DONG SHUSHAN (Autor:in) / TAO QIANG (Autor:in) / ZHU PINWEN (Autor:in)
12.12.2023
Patent
Elektronische Ressource
Chinesisch
IPC:
C04B
Kalk
,
LIME
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