Eine Plattform für die Wissenschaft: Bauingenieurwesen, Architektur und Urbanistik
Eine Plattform für die Wissenschaft: Bauingenieurwesen, Architektur und Urbanistik
Preparation method of high-temperature-resistant mullite nanofiber aerogel
The invention discloses a preparation method of high-temperature-resistant mullite nanofiber aerogel. Polyhydrosiloxane and aluminum sec-butoxide are used as raw materials, and a mullite nano precursor fiber cloth is prepared by adopting an electrostatic spinning process. The precursor fibers are dispersed, and mullite nanofiber aerogel is prepared by adopting a tert-butyl alcohol gel casting method. After the mullite nanofiber aerogel is sintered at 1400 DEG C, the volume density of the mullite nanofiber aerogel is 0.108 g/cm<3>, the strength is 0.153 MPa, the heat conductivity is 0.0715 W/(m.K), and the aerogel prepared through the method is continuous and controllable and can be applied to thermal protection systems of devices such as aerospace crafts and high-temperature kilns.
本发明公开了一种耐高温的莫来石纳米纤维气凝胶的制备方法。以聚氢硅氧烷和仲丁醇铝为原料，采用静电纺丝工艺制备莫来石纳米前驱体纤维布。然后将该前驱体纤维分散采用叔丁醇凝胶注模的方法制备莫来石纳米纤维气凝胶。本发明的莫来石纳米纤维气凝胶经1400℃烧结后体积密度为0.108g/cm，强度为0.153MPa，热导率0.0715W/(m·K)，并且本发明制备的气凝胶连续可控，可应用在航天飞行器、高温窑炉等设备的热防护系统中。
Preparation method of high-temperature-resistant mullite nanofiber aerogel
The invention discloses a preparation method of high-temperature-resistant mullite nanofiber aerogel. Polyhydrosiloxane and aluminum sec-butoxide are used as raw materials, and a mullite nano precursor fiber cloth is prepared by adopting an electrostatic spinning process. The precursor fibers are dispersed, and mullite nanofiber aerogel is prepared by adopting a tert-butyl alcohol gel casting method. After the mullite nanofiber aerogel is sintered at 1400 DEG C, the volume density of the mullite nanofiber aerogel is 0.108 g/cm<3>, the strength is 0.153 MPa, the heat conductivity is 0.0715 W/(m.K), and the aerogel prepared through the method is continuous and controllable and can be applied to thermal protection systems of devices such as aerospace crafts and high-temperature kilns.
本发明公开了一种耐高温的莫来石纳米纤维气凝胶的制备方法。以聚氢硅氧烷和仲丁醇铝为原料，采用静电纺丝工艺制备莫来石纳米前驱体纤维布。然后将该前驱体纤维分散采用叔丁醇凝胶注模的方法制备莫来石纳米纤维气凝胶。本发明的莫来石纳米纤维气凝胶经1400℃烧结后体积密度为0.108g/cm，强度为0.153MPa，热导率0.0715W/(m·K)，并且本发明制备的气凝胶连续可控，可应用在航天飞行器、高温窑炉等设备的热防护系统中。
Preparation method of high-temperature-resistant mullite nanofiber aerogel
一种耐高温的莫来石纳米纤维气凝胶的制备方法
GUO ANRAN (Autor:in) / DONG YE (Autor:in) / ZHANG YING (Autor:in) / LIU JIACHEN (Autor:in)
08.05.2020
Patent
Elektronische Ressource
Chinesisch
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