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一种耐热高比表面积氧化铝气凝胶粉体填充绝热蜂窝的制备方法

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10Claims · 2 independent
§ Ⅰ

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Inventor

李宜彬; 马毓

IPC Classification

C04B 38/00 (2006.01)C04B 35/10 (2006.01)C04B 35/622 (2006.01)C04B 35/624 (2006.01)C04B 35/638 (2006.01)

本发明涉及绝热材料与蜂窝复合结构制备领域,公开了一种耐热高比表面积氧化铝气凝胶粉体填充绝热蜂窝的制备方法。该方法以纤维/羽毛状氧化铝溶胶为基体,水相加入纳米氧化硅胶体共分散,喷雾瞬时冻结并真空冻干制得蓬松复合粉体;将其填充耐热蜂窝后,在中温黏结形成稀疏玻璃相微颈部,实现原位稳固定型与孔道连通兼顾,能够克服绝热性能与填充稳固性的矛盾。工艺流程简单、环境友好、运维压力小,适于产业化应用。

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