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Inorganic fiber reinforced aerogel sheet and preparation method thereof
The invention relates to the technical field of thermal insulation materials, in particular to an inorganic fiber reinforced aerogel sheet and a preparation method thereof.The aerogel sheet is a composition of inorganic fibers and aerogel, and the problem that an aerogel sheet is short in fireproof and burning-resistant time is solved; the aerogel is prepared into a large-thickness fiber-reinforced gel composite block material through sol dipping, pressurized compounding and in-situ gelling methods; after demolding, drying the gel composite material by adopting a supercritical ethanol drying method to obtain a large-thickness aerogel composite block material; the aerogel composite block with the large thickness is subjected to machining and slicing, and the aerogel thin plate is obtained. According to the invention, large-thickness inorganic fiber is adopted as a base material, different from a fiber paper base material, the inorganic fiber base material does not contain organic glue and other substances, the prepared aerogel sheet basically does not contain organic matters, the combustion heat value is lower than 2.0 MJ/kg, and the combustion grade reaches grade A1; and the phenomena of smoldering, smoking, color changing and the like do not exist in the use process.
本发明涉及绝热材料技术领域，具体涉及一种无机纤维增强的气凝胶薄板及其制备方法，气凝胶薄板为无机纤维和气凝胶的组合物，解决气凝胶薄板防火耐烧时间短的问题；气凝胶通过溶胶浸渍、加压复合、原位凝胶的方法制备大厚度的纤维增强凝胶复合块材；脱模后，凝胶复合材料采用超临界乙醇干燥方法获得大厚度的气凝胶复合块材；对大厚度的气凝胶复合块材进行机械加工和剖片，即得本发明所述气凝胶薄板；本发明采用大厚度的无机纤维为基材，区别于纤维纸类类基材，无机纤维基中不含有机胶类等物质，制得的气凝胶薄板中基本不含有机物，燃烧热值低于2.0MJ/kg，燃烧等级达到A1级；使用过程中不存在闷烧、冒烟、变色等现象。
Inorganic fiber reinforced aerogel sheet and preparation method thereof
The invention relates to the technical field of thermal insulation materials, in particular to an inorganic fiber reinforced aerogel sheet and a preparation method thereof.The aerogel sheet is a composition of inorganic fibers and aerogel, and the problem that an aerogel sheet is short in fireproof and burning-resistant time is solved; the aerogel is prepared into a large-thickness fiber-reinforced gel composite block material through sol dipping, pressurized compounding and in-situ gelling methods; after demolding, drying the gel composite material by adopting a supercritical ethanol drying method to obtain a large-thickness aerogel composite block material; the aerogel composite block with the large thickness is subjected to machining and slicing, and the aerogel thin plate is obtained. According to the invention, large-thickness inorganic fiber is adopted as a base material, different from a fiber paper base material, the inorganic fiber base material does not contain organic glue and other substances, the prepared aerogel sheet basically does not contain organic matters, the combustion heat value is lower than 2.0 MJ/kg, and the combustion grade reaches grade A1; and the phenomena of smoldering, smoking, color changing and the like do not exist in the use process.
本发明涉及绝热材料技术领域，具体涉及一种无机纤维增强的气凝胶薄板及其制备方法，气凝胶薄板为无机纤维和气凝胶的组合物，解决气凝胶薄板防火耐烧时间短的问题；气凝胶通过溶胶浸渍、加压复合、原位凝胶的方法制备大厚度的纤维增强凝胶复合块材；脱模后，凝胶复合材料采用超临界乙醇干燥方法获得大厚度的气凝胶复合块材；对大厚度的气凝胶复合块材进行机械加工和剖片，即得本发明所述气凝胶薄板；本发明采用大厚度的无机纤维为基材，区别于纤维纸类类基材，无机纤维基中不含有机胶类等物质，制得的气凝胶薄板中基本不含有机物，燃烧热值低于2.0MJ/kg，燃烧等级达到A1级；使用过程中不存在闷烧、冒烟、变色等现象。
Inorganic fiber reinforced aerogel sheet and preparation method thereof
一种无机纤维增强的气凝胶薄板及其制备方法
CHEN YONG (author) / HSIEH JIANG (author) / DUAN ZHENGJI (author) / FU BIN (author) / LIAO MINGXIN (author)
2024-08-02
Patent
Electronic Resource
Chinese
IPC:
C04B
Kalk
,
LIME
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