Eine Plattform für die Wissenschaft: Bauingenieurwesen, Architektur und Urbanistik
Eine Plattform für die Wissenschaft: Bauingenieurwesen, Architektur und Urbanistik
Multi-component oxide high-temperature-resistant aerogel composite material and preparation method thereof
The invention relates to a multi-component oxide high-temperature-resistant aerogel composite material and a preparation method thereof. The method comprises the following steps: uniformly dispersing an aluminum source and a magnesium source with water to obtain a dispersion liquid, then adding a structure modulating agent and a mineralizing agent into the dispersion liquid, and carrying out a hydrothermal reaction to obtain a composite precursor sol; the aluminum source is an aluminum oxide nanowire and/or an aluminum oxide nanobelt; the magnesium source is magnesium oxide nano powder; adding mullite nanofibers, silicon carbide nanopowder and an inorganic gelling agent into the composite precursor sol, uniformly mixing, and aging after system gelation to obtain wet gel; the inorganic gelling agent is calcium aluminosilicate cement and/or calcium ion doped zirconium oxide sol; the wet gel is sequentially subjected to solvent replacement and supercritical drying, and the multi-element oxide high-temperature-resistant aerogel composite material is prepared. The temperature resistance of the material is improved, the particle size and the structure of the material are effectively controlled, and the force, heat and high-temperature sintering performance of the aerogel heat insulation material can be effectively improved.
本发明涉及一种多元氧化物耐高温气凝胶复合材料及其制备方法。所述方法包括：用水将铝源和镁源分散均匀，得到分散液，然后往分散液中加入结构调变剂和矿化剂并进行水热反应，得到复合前驱体溶胶；所述铝源为氧化铝纳米线和/或氧化铝纳米带；所述镁源为氧化镁纳米粉；往复合前驱体溶胶中加入莫来石纳米纤维、碳化硅纳米粉和无机胶凝剂并混合均匀，待体系凝胶后进行老化，得到湿凝胶；所述无机胶凝剂为硅铝酸钙水泥和/或钙离子掺杂的氧化锆溶胶；将湿凝胶依次进行溶剂置换和超临界干燥，制得多元氧化物耐高温气凝胶复合材料。本发明提高了材料的耐温性，有效控制了材料的粒径和结构，能够有效提升气凝胶隔热材料的力、热性能以及高温烧结能。
Multi-component oxide high-temperature-resistant aerogel composite material and preparation method thereof
The invention relates to a multi-component oxide high-temperature-resistant aerogel composite material and a preparation method thereof. The method comprises the following steps: uniformly dispersing an aluminum source and a magnesium source with water to obtain a dispersion liquid, then adding a structure modulating agent and a mineralizing agent into the dispersion liquid, and carrying out a hydrothermal reaction to obtain a composite precursor sol; the aluminum source is an aluminum oxide nanowire and/or an aluminum oxide nanobelt; the magnesium source is magnesium oxide nano powder; adding mullite nanofibers, silicon carbide nanopowder and an inorganic gelling agent into the composite precursor sol, uniformly mixing, and aging after system gelation to obtain wet gel; the inorganic gelling agent is calcium aluminosilicate cement and/or calcium ion doped zirconium oxide sol; the wet gel is sequentially subjected to solvent replacement and supercritical drying, and the multi-element oxide high-temperature-resistant aerogel composite material is prepared. The temperature resistance of the material is improved, the particle size and the structure of the material are effectively controlled, and the force, heat and high-temperature sintering performance of the aerogel heat insulation material can be effectively improved.
本发明涉及一种多元氧化物耐高温气凝胶复合材料及其制备方法。所述方法包括：用水将铝源和镁源分散均匀，得到分散液，然后往分散液中加入结构调变剂和矿化剂并进行水热反应，得到复合前驱体溶胶；所述铝源为氧化铝纳米线和/或氧化铝纳米带；所述镁源为氧化镁纳米粉；往复合前驱体溶胶中加入莫来石纳米纤维、碳化硅纳米粉和无机胶凝剂并混合均匀，待体系凝胶后进行老化，得到湿凝胶；所述无机胶凝剂为硅铝酸钙水泥和/或钙离子掺杂的氧化锆溶胶；将湿凝胶依次进行溶剂置换和超临界干燥，制得多元氧化物耐高温气凝胶复合材料。本发明提高了材料的耐温性，有效控制了材料的粒径和结构，能够有效提升气凝胶隔热材料的力、热性能以及高温烧结能。
Multi-component oxide high-temperature-resistant aerogel composite material and preparation method thereof
一种多元氧化物耐高温气凝胶复合材料及其制备方法
REN ZHONGQI (Autor:in) / TU YUMING (Autor:in)
05.11.2024
Patent
Elektronische Ressource
Chinesisch
IPC:
C04B
Kalk
,
LIME
High-temperature-resistant composite component aerogel material and preparation method thereof
| Europäisches Patentamt | 2022
High-temperature-resistant ternary aerogel composite material and preparation method thereof
| Europäisches Patentamt | 2024
High-temperature-resistant aerogel fiber composite material and preparation method thereof
| Europäisches Patentamt | 2020
| Europäisches Patentamt | 2021
| Europäisches Patentamt | 2024