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Hydrophobic ceramic aerogel material with micro-nano structure and preparation method of hydrophobic ceramic aerogel material
The invention relates to a hydrophobic ceramic aerogel material with a micro-nano structure and a preparation method of the hydrophobic ceramic aerogel material, and the method comprises the following steps: uniformly mixing alumina nano powder and a sulfuric acid solution with water to obtain a mixed solution, and then placing the mixed solution at 150-300 DEG C for hydrothermal reaction for 12-18 hours to obtain gel; aging the gel to obtain a gel block; soaking the gel block in a hydrophobic treatment solution for 24-96 hours; the preparation of the hydrophobic treatment liquid comprises the following steps: preparing silane into a silane solution by using ethanol, then adding acetic acid or oxalic acid into the silane solution, reacting for 0.5-12 hours to obtain hydrolysate, then adding an ammonium fluoride solution or an ammonia water solution into the hydrolysate, and stirring for 1-30 minutes to obtain the hydrophobic treatment liquid; the treated gel block is sequentially subjected to solvent replacement and supercritical drying, and the hydrophobic ceramic aerogel material with the micro-nano structure is prepared. According to the invention, the hydrophobic ceramic aerogel material with the micro-nano structure, which is super-hydrophobic, high-temperature-resistant and efficient in heat insulation, is obtained.
本发明涉及一种微纳米结构疏水型陶瓷气凝胶材料及其制备方法，所述方法为：用水将氧化铝纳米粉和硫酸溶液混合均匀，得到混合液，然后将混合液置于150～300℃下水热反应12～18h，得到凝胶；将所述凝胶进行老化，得到凝胶块；将凝胶块置于疏水处理液中浸泡24～96h；疏水处理液的配制为：用乙醇将硅烷配制成硅烷溶液，然后往硅烷溶液中加入醋酸或草酸反应0.5～12h，得到水解液，然后往水解液中加入氟化铵溶液或氨水溶液搅拌1～30min，得到疏水处理液；将处理后的凝胶块依次进行溶剂置换和超临界干燥，制得微纳米结构疏水型陶瓷气凝胶材料。本发明得到了一种超疏水、耐高温及高效隔热的微纳米结构疏水型陶瓷气凝胶材料。
Hydrophobic ceramic aerogel material with micro-nano structure and preparation method of hydrophobic ceramic aerogel material
The invention relates to a hydrophobic ceramic aerogel material with a micro-nano structure and a preparation method of the hydrophobic ceramic aerogel material, and the method comprises the following steps: uniformly mixing alumina nano powder and a sulfuric acid solution with water to obtain a mixed solution, and then placing the mixed solution at 150-300 DEG C for hydrothermal reaction for 12-18 hours to obtain gel; aging the gel to obtain a gel block; soaking the gel block in a hydrophobic treatment solution for 24-96 hours; the preparation of the hydrophobic treatment liquid comprises the following steps: preparing silane into a silane solution by using ethanol, then adding acetic acid or oxalic acid into the silane solution, reacting for 0.5-12 hours to obtain hydrolysate, then adding an ammonium fluoride solution or an ammonia water solution into the hydrolysate, and stirring for 1-30 minutes to obtain the hydrophobic treatment liquid; the treated gel block is sequentially subjected to solvent replacement and supercritical drying, and the hydrophobic ceramic aerogel material with the micro-nano structure is prepared. According to the invention, the hydrophobic ceramic aerogel material with the micro-nano structure, which is super-hydrophobic, high-temperature-resistant and efficient in heat insulation, is obtained.
本发明涉及一种微纳米结构疏水型陶瓷气凝胶材料及其制备方法，所述方法为：用水将氧化铝纳米粉和硫酸溶液混合均匀，得到混合液，然后将混合液置于150～300℃下水热反应12～18h，得到凝胶；将所述凝胶进行老化，得到凝胶块；将凝胶块置于疏水处理液中浸泡24～96h；疏水处理液的配制为：用乙醇将硅烷配制成硅烷溶液，然后往硅烷溶液中加入醋酸或草酸反应0.5～12h，得到水解液，然后往水解液中加入氟化铵溶液或氨水溶液搅拌1～30min，得到疏水处理液；将处理后的凝胶块依次进行溶剂置换和超临界干燥，制得微纳米结构疏水型陶瓷气凝胶材料。本发明得到了一种超疏水、耐高温及高效隔热的微纳米结构疏水型陶瓷气凝胶材料。
Hydrophobic ceramic aerogel material with micro-nano structure and preparation method of hydrophobic ceramic aerogel material
一种微纳米结构疏水型陶瓷气凝胶材料及其制备方法
ZHANG ENSHUANG (author) / LEI CHAOSHUAI (author) / LI WENJING (author) / WANG PENG (author) / XU PEI (author) / ZHANG HAO (author) / LIU YUANYUAN (author)
2022-08-05
Patent
Electronic Resource
Chinese
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