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A platform for research: civil engineering, architecture and urbanism
Method for rapidly preparing high-temperature carbon aerogel felt without pollution
The invention discloses a method for rapidly preparing a high-temperature carbon aerogel felt without pollution. The method comprises the following steps: preparing alcohol-soluble thermosetting phenolic resin, impregnating the alcohol-soluble resin and a fibrofelt, performing gel curing, performing supercritical drying to obtain a phenolic resin aerogel felt, and performing high-temperature carbonization on the phenolic resin aerogel felt under an inert gas condition to prepare the carbon fiber composite carbon aerogel felt which can be used in an environment with the temperature higher than 1700 DEG C. According to the method, the phenolic resin is prepared from alcohol as a solvent, solid formaldehyde as a raw material and phenols, solvent replacement is not needed, the separated liquid after supercritical drying is reused for synthesizing the phenolic resin, and the high-temperature carbon aerogel felt is rapidly prepared without emission of harmful substances.
本发明公开了一种无污染快速制备高温碳气凝胶毡的方法。该方法包括醇溶性热固酚醛树脂的制备，醇溶性树脂与纤维毡的浸渍、凝胶固化，经超临界干燥后得到酚醛树脂气凝胶毡，将其在惰性气体条件下高温碳化，制备出可用于温度高于1700℃环境下的碳纤维复合碳气凝胶毡。本发明采用醇作为溶剂，固体甲醛为原料与酚类制备出酚醛树脂，无需溶剂置换，超临界干燥后的分离液体重新用于合成酚醛树脂，实现了快速，无有害物质排放制备高温碳气凝胶毡。
Method for rapidly preparing high-temperature carbon aerogel felt without pollution
The invention discloses a method for rapidly preparing a high-temperature carbon aerogel felt without pollution. The method comprises the following steps: preparing alcohol-soluble thermosetting phenolic resin, impregnating the alcohol-soluble resin and a fibrofelt, performing gel curing, performing supercritical drying to obtain a phenolic resin aerogel felt, and performing high-temperature carbonization on the phenolic resin aerogel felt under an inert gas condition to prepare the carbon fiber composite carbon aerogel felt which can be used in an environment with the temperature higher than 1700 DEG C. According to the method, the phenolic resin is prepared from alcohol as a solvent, solid formaldehyde as a raw material and phenols, solvent replacement is not needed, the separated liquid after supercritical drying is reused for synthesizing the phenolic resin, and the high-temperature carbon aerogel felt is rapidly prepared without emission of harmful substances.
本发明公开了一种无污染快速制备高温碳气凝胶毡的方法。该方法包括醇溶性热固酚醛树脂的制备，醇溶性树脂与纤维毡的浸渍、凝胶固化，经超临界干燥后得到酚醛树脂气凝胶毡，将其在惰性气体条件下高温碳化，制备出可用于温度高于1700℃环境下的碳纤维复合碳气凝胶毡。本发明采用醇作为溶剂，固体甲醛为原料与酚类制备出酚醛树脂，无需溶剂置换，超临界干燥后的分离液体重新用于合成酚醛树脂，实现了快速，无有害物质排放制备高温碳气凝胶毡。
Method for rapidly preparing high-temperature carbon aerogel felt without pollution
一种无污染快速制备高温碳气凝胶毡的方法
ZHAO YAOYAO (author) / YANG ZHIGUO (author) / GUO WEIJIANG (author) / HUANG KUNTAO (author)
2022-11-01
Patent
Electronic Resource
Chinese
IPC:
C04B
Kalk
,
LIME
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