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Preparation method of ceramic-based modified carbon fiber thermal insulation material
The invention relates to a preparation method of a ceramic-based modified carbon fiber thermal insulation material. According to the method, SiOC ceramic is used for modifying a carbon fiber thermal insulation material. The method comprises the following steps: hydrolyzing one, two or four of methyltrimethoxysilane, phenyltrimethoxysilane, methylphenyldimethoxysilane and tetraethoxysilane in ethanol and water solution or methanol and an ethyl acetate solution to obtain silicon resin, impregnating a carbon fiber heat insulation tile in the silicon resin, curing at low temperature, cracking at high temperature, and repeating the three steps for 3-4 times to obtain the ceramic-based modified carbon fiber thermal insulation material. The material has excellent oxidation resistance and temperature resistance, the weightlessness is as low as 9.2% after the material is placed in an air environment at 1500 DEG C for 1 h, the compressive strength of 3 MPa or above can still be kept after the material is placed in the air environment at 1500 DEG C for 1 h, and the material has great significance in improving the performance of carbon-based thermal insulation materials.
本发明涉及一种陶瓷基改性碳纤维隔热材料的制备方法，该方法利用SiOC陶瓷对碳纤维隔热材料进行改性。利用甲基三甲氧基硅烷、苯基三甲氧基硅烷、甲基苯基二甲氧基硅烷和正硅酸乙酯中对一种、两种或四种在乙醇和水溶液或甲醇、乙酸乙酯溶液中水解，得到硅树脂，将碳纤维隔热瓦在硅树脂中经过浸渍、低温固化、高温裂解，重复该三个步骤3‑4次，得到陶瓷基改性的碳纤维隔热材料。该材料具备优异的抗氧化性能和耐温性能，在1500℃空气环境中放置1h失重低至9.2％，1500℃空气环境中放置1h后仍能保持3MPa以上的压缩强度，对于碳基隔热材料性能提升有重要意义。
Preparation method of ceramic-based modified carbon fiber thermal insulation material
The invention relates to a preparation method of a ceramic-based modified carbon fiber thermal insulation material. According to the method, SiOC ceramic is used for modifying a carbon fiber thermal insulation material. The method comprises the following steps: hydrolyzing one, two or four of methyltrimethoxysilane, phenyltrimethoxysilane, methylphenyldimethoxysilane and tetraethoxysilane in ethanol and water solution or methanol and an ethyl acetate solution to obtain silicon resin, impregnating a carbon fiber heat insulation tile in the silicon resin, curing at low temperature, cracking at high temperature, and repeating the three steps for 3-4 times to obtain the ceramic-based modified carbon fiber thermal insulation material. The material has excellent oxidation resistance and temperature resistance, the weightlessness is as low as 9.2% after the material is placed in an air environment at 1500 DEG C for 1 h, the compressive strength of 3 MPa or above can still be kept after the material is placed in the air environment at 1500 DEG C for 1 h, and the material has great significance in improving the performance of carbon-based thermal insulation materials.
本发明涉及一种陶瓷基改性碳纤维隔热材料的制备方法，该方法利用SiOC陶瓷对碳纤维隔热材料进行改性。利用甲基三甲氧基硅烷、苯基三甲氧基硅烷、甲基苯基二甲氧基硅烷和正硅酸乙酯中对一种、两种或四种在乙醇和水溶液或甲醇、乙酸乙酯溶液中水解，得到硅树脂，将碳纤维隔热瓦在硅树脂中经过浸渍、低温固化、高温裂解，重复该三个步骤3‑4次，得到陶瓷基改性的碳纤维隔热材料。该材料具备优异的抗氧化性能和耐温性能，在1500℃空气环境中放置1h失重低至9.2％，1500℃空气环境中放置1h后仍能保持3MPa以上的压缩强度，对于碳基隔热材料性能提升有重要意义。
Preparation method of ceramic-based modified carbon fiber thermal insulation material
一种陶瓷基改性碳纤维隔热材料的制备方法
GAO YUZHI (author) / LEI CHAOSHUAI (author) / HUANG HONGYAN (author) / LIU TAO (author) / XU CHUNXIAO (author) / KONG DELONG (author) / LI WENJING (author) / YANG JIEYING (author) / ZHAO YINGMIN (author) / ZHANG HAO (author)
2020-04-10
Patent
Electronic Resource
Chinese
IPC:
C04B
Kalk
,
LIME
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