Eine Plattform für die Wissenschaft: Bauingenieurwesen, Architektur und Urbanistik
Eine Plattform für die Wissenschaft: Bauingenieurwesen, Architektur und Urbanistik
High-strength high-temperature-resistant ceramic fiber aerogel and preparation method thereof
The invention discloses a high-strength high-temperature-resistant ceramic fiber aerogel and a preparation method thereof, the aerogel is composed of a modified opacifying agent, a binder and ceramic fibers, the ceramic fibers form honeycomb-shaped holes, and the binder and the modified opacifying agent are uniformly attached to hole walls; wherein the modified opacifying agent is of a double-layer ball structure formed by wrapping titanium dioxide particles with silicon dioxide. The anisotropic ceramic fiber aerogel is prepared by bonding fibers together through the binder and cooperating with directional freeze drying, and after high-temperature heat treatment, the aerogel shows extremely high strength, can bear the pressure of 500KPa in single orientation, and can meet many actual needs.
本发明公开了一种高强度耐高温陶瓷纤维气凝胶及其制备方法，气凝胶由改性遮光剂、粘结剂和陶瓷纤维组成，陶瓷纤维形成蜂窝状孔洞，粘结剂和改性遮光剂均匀附着在洞壁上；其中改性遮光剂为二氧化硅包裹二氧化钛颗粒的“双层球”结构。本发明通过粘结剂将纤维与纤维之间粘结起来，配合定向冷冻干燥，制备出了各向异性的陶瓷纤维气凝胶，在高温热处理后，气凝胶表现出极高的强度，在单一取向上能承受500KPa的压强，能够满足诸多实际需要。
High-strength high-temperature-resistant ceramic fiber aerogel and preparation method thereof
The invention discloses a high-strength high-temperature-resistant ceramic fiber aerogel and a preparation method thereof, the aerogel is composed of a modified opacifying agent, a binder and ceramic fibers, the ceramic fibers form honeycomb-shaped holes, and the binder and the modified opacifying agent are uniformly attached to hole walls; wherein the modified opacifying agent is of a double-layer ball structure formed by wrapping titanium dioxide particles with silicon dioxide. The anisotropic ceramic fiber aerogel is prepared by bonding fibers together through the binder and cooperating with directional freeze drying, and after high-temperature heat treatment, the aerogel shows extremely high strength, can bear the pressure of 500KPa in single orientation, and can meet many actual needs.
本发明公开了一种高强度耐高温陶瓷纤维气凝胶及其制备方法，气凝胶由改性遮光剂、粘结剂和陶瓷纤维组成，陶瓷纤维形成蜂窝状孔洞，粘结剂和改性遮光剂均匀附着在洞壁上；其中改性遮光剂为二氧化硅包裹二氧化钛颗粒的“双层球”结构。本发明通过粘结剂将纤维与纤维之间粘结起来，配合定向冷冻干燥，制备出了各向异性的陶瓷纤维气凝胶，在高温热处理后，气凝胶表现出极高的强度，在单一取向上能承受500KPa的压强，能够满足诸多实际需要。
High-strength high-temperature-resistant ceramic fiber aerogel and preparation method thereof
一种高强度耐高温陶瓷纤维气凝胶及其制备方法
LIN YING (Autor:in) / LIAO JIAXUAN (Autor:in) / TANG JUBO (Autor:in)
26.03.2024
Patent
Elektronische Ressource
Chinesisch
IPC:
C04B
Kalk
,
LIME
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