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Simple method for preparing mullite fiber-based porous heat insulation tile
A simple method for preparing a mullite fiber-based porous heat insulation tile is provided. The method comprises the following steps: firstly, shearing and deslagging polycrystalline mullite fibers to obtain chopped mullite fibers; mixing polydimethylsilicone oil and polydimethylsilicone rubber to obtain a precursor solution; dropwise adding a surfactant oleic acid into the precursor solution toachieve a better fiber dispersion effect, and then slowly adding the short-cut mullite fibers while stirring; adding a curing agent dipropylene triamine (DPTA), and then carrying out compression molding; curing a green body at room temperature, and then discharging glue and sintering in a high-temperature furnace to obtain the mullite fiber porous heat insulation tile. The technical problem of thermal migration of a mullite ceramic fiber heat insulation tile binder is solved, the production process is optimized, and the prepared mullite fiber heat insulation tile can bear the high temperatureof 1500 DEG C, has high resilience and can be used for hypersonic speed aerospace crafts.
一种制备莫来石纤维基多孔隔热瓦的简易方法，首先多晶莫来石纤维进行剪切和除渣，得到短切莫来石纤维,将聚二甲基硅油和聚二甲基硅橡胶混合，得到前驱体溶液；向前驱体溶液滴加表面活性剂油酸以达到更好的纤维分散效果，然后缓慢地加入短切莫来石纤维且边加入边搅拌；加入固化剂二丙烯三胺(DPTA)后模压成型；坯体室温下固化后在高温炉中进行排胶和烧结，得到莫来石纤维多孔隔热瓦；本发明克服了莫来石陶瓷纤维隔热瓦粘结剂热迁移的技术问题并且优化了生产工艺，制备的莫来石纤维隔热瓦能承受1500℃高温且有高回弹性，可用于高超声速航天飞行器。
Simple method for preparing mullite fiber-based porous heat insulation tile
A simple method for preparing a mullite fiber-based porous heat insulation tile is provided. The method comprises the following steps: firstly, shearing and deslagging polycrystalline mullite fibers to obtain chopped mullite fibers; mixing polydimethylsilicone oil and polydimethylsilicone rubber to obtain a precursor solution; dropwise adding a surfactant oleic acid into the precursor solution toachieve a better fiber dispersion effect, and then slowly adding the short-cut mullite fibers while stirring; adding a curing agent dipropylene triamine (DPTA), and then carrying out compression molding; curing a green body at room temperature, and then discharging glue and sintering in a high-temperature furnace to obtain the mullite fiber porous heat insulation tile. The technical problem of thermal migration of a mullite ceramic fiber heat insulation tile binder is solved, the production process is optimized, and the prepared mullite fiber heat insulation tile can bear the high temperatureof 1500 DEG C, has high resilience and can be used for hypersonic speed aerospace crafts.
一种制备莫来石纤维基多孔隔热瓦的简易方法，首先多晶莫来石纤维进行剪切和除渣，得到短切莫来石纤维,将聚二甲基硅油和聚二甲基硅橡胶混合，得到前驱体溶液；向前驱体溶液滴加表面活性剂油酸以达到更好的纤维分散效果，然后缓慢地加入短切莫来石纤维且边加入边搅拌；加入固化剂二丙烯三胺(DPTA)后模压成型；坯体室温下固化后在高温炉中进行排胶和烧结，得到莫来石纤维多孔隔热瓦；本发明克服了莫来石陶瓷纤维隔热瓦粘结剂热迁移的技术问题并且优化了生产工艺，制备的莫来石纤维隔热瓦能承受1500℃高温且有高回弹性，可用于高超声速航天飞行器。
Simple method for preparing mullite fiber-based porous heat insulation tile
一种制备莫来石纤维基多孔隔热瓦的简易方法
LIU JIACHEN (author) / ZHU WENJUN (author) / GUO ANRAN (author)
2020-04-21
Patent
Electronic Resource
Chinese
IPC:
C04B
Kalk
,
LIME
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