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Heat-insulating and high-temperature-resistant aerogel gradient composite material and preparation method thereof
The invention discloses a heat-insulating and high-temperature-resistant aerogel gradient composite material and a preparation method thereof. According to the aerogel gradient composite material, ethyl alcohol and deionized water serve as solvents, a silicon source is fully dissolved, then an acid catalyst is used, inorganic fibers serve as fiber reinforcements, and through sol-gel, aging and solvent replacement methods, the gradient composite material final-state gel is prepared and is subjected to carbon dioxide supercritical drying treatment, and finally the heat-insulating and high-temperature-resistant aerogel gradient composite material is obtained.
本发明公开了一种隔热、耐高温气凝胶梯度复合材料及其制备方法，该气凝胶梯度复合材料，以乙醇、去离子水作为溶剂，充分溶解硅源，再用酸性催化剂，以无机纤维作为纤维增强体，通过溶胶‑凝胶、老化、溶剂置换的方法，制得梯度复合材料终态凝胶，经二氧化碳超临界干燥处理，最终得到隔热、耐高温气凝胶梯度复合材料。
Heat-insulating and high-temperature-resistant aerogel gradient composite material and preparation method thereof
The invention discloses a heat-insulating and high-temperature-resistant aerogel gradient composite material and a preparation method thereof. According to the aerogel gradient composite material, ethyl alcohol and deionized water serve as solvents, a silicon source is fully dissolved, then an acid catalyst is used, inorganic fibers serve as fiber reinforcements, and through sol-gel, aging and solvent replacement methods, the gradient composite material final-state gel is prepared and is subjected to carbon dioxide supercritical drying treatment, and finally the heat-insulating and high-temperature-resistant aerogel gradient composite material is obtained.
本发明公开了一种隔热、耐高温气凝胶梯度复合材料及其制备方法，该气凝胶梯度复合材料，以乙醇、去离子水作为溶剂，充分溶解硅源，再用酸性催化剂，以无机纤维作为纤维增强体，通过溶胶‑凝胶、老化、溶剂置换的方法，制得梯度复合材料终态凝胶，经二氧化碳超临界干燥处理，最终得到隔热、耐高温气凝胶梯度复合材料。
Heat-insulating and high-temperature-resistant aerogel gradient composite material and preparation method thereof
一种隔热、耐高温气凝胶梯度复合材料及其制备方法
GAO QINGFU (author) / YANG BIN (author) / ZHANG SIZHAO (author) / XIONG XI (author) / LI YONG (author)
2021-05-25
Patent
Electronic Resource
Chinese
High-temperature-resistant heat-insulating aerogel and preparation method thereof
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