Eine Plattform für die Wissenschaft: Bauingenieurwesen, Architektur und Urbanistik
Eine Plattform für die Wissenschaft: Bauingenieurwesen, Architektur und Urbanistik
Preparation method of high-temperature ceramifiable aerogel thermal insulation material
The invention relates to the field of thermal insulation materials, and discloses a preparation method of a high-temperature ceramifiable aerogel thermal insulation material, which comprises the following steps: 1) mixing gelatin and water, heating and dissolving, adding oxidized cellulose, and stirring until uniform gel is formed; (2) mixing a ceramic forming filler, a fluxing agent and water, adding the mixture into the gel, and uniformly mixing to obtain mixed gel; (3) adding gelatin into the mixed gel while heating, and uniformly mixing; and 4) adding a glutaraldehyde solution, pouring the obtained precursor liquid into a mold, and freeze-drying to obtain the high-temperature ceramifiable aerogel thermal insulation material. The aerogel skeleton of the high-temperature ceramifiable aerogel thermal insulation material is formed by crosslinking oxidized cellulose and gelatin, and has the characteristics of low heat conductivity coefficient and good fatigue resistance; a ceramic forming filler and a fluxing agent are loaded in an aerogel skeleton, so that the thermal insulation material disclosed by the invention has the characteristic of high-temperature porcelainization, not only has excellent fire resistance, but also can still have relatively good structural stability at a high temperature.
本发明涉及隔热材料领域，公开了一种高温可瓷化气凝胶隔热材料的制备方法，包括：1）将明胶与水混合并加热溶解，加入氧化纤维素，搅拌至形成均匀的凝胶；2）将成瓷填料、助熔剂与水混合，加至凝胶中混匀，得到混合凝胶；3）在加热下向混合凝胶中加入明胶混匀；4）加入戊二醛溶液，将所得前驱体液体倒入模具中，冷冻干燥，得到高温可瓷化气凝胶隔热材料。本发明高温可瓷化气凝胶隔热材料的气凝胶骨架由氧化纤维素和明胶交联形成，具有导热系数低，耐疲劳性能好的特点；该气凝胶骨架中负载有成瓷填料和助熔剂，使本发明隔热材料具有高温可瓷化特性，不仅具有出色的防火性，并且可使隔热材料在高温下仍具有较好的结构稳定性。
Preparation method of high-temperature ceramifiable aerogel thermal insulation material
The invention relates to the field of thermal insulation materials, and discloses a preparation method of a high-temperature ceramifiable aerogel thermal insulation material, which comprises the following steps: 1) mixing gelatin and water, heating and dissolving, adding oxidized cellulose, and stirring until uniform gel is formed; (2) mixing a ceramic forming filler, a fluxing agent and water, adding the mixture into the gel, and uniformly mixing to obtain mixed gel; (3) adding gelatin into the mixed gel while heating, and uniformly mixing; and 4) adding a glutaraldehyde solution, pouring the obtained precursor liquid into a mold, and freeze-drying to obtain the high-temperature ceramifiable aerogel thermal insulation material. The aerogel skeleton of the high-temperature ceramifiable aerogel thermal insulation material is formed by crosslinking oxidized cellulose and gelatin, and has the characteristics of low heat conductivity coefficient and good fatigue resistance; a ceramic forming filler and a fluxing agent are loaded in an aerogel skeleton, so that the thermal insulation material disclosed by the invention has the characteristic of high-temperature porcelainization, not only has excellent fire resistance, but also can still have relatively good structural stability at a high temperature.
本发明涉及隔热材料领域，公开了一种高温可瓷化气凝胶隔热材料的制备方法，包括：1）将明胶与水混合并加热溶解，加入氧化纤维素，搅拌至形成均匀的凝胶；2）将成瓷填料、助熔剂与水混合，加至凝胶中混匀，得到混合凝胶；3）在加热下向混合凝胶中加入明胶混匀；4）加入戊二醛溶液，将所得前驱体液体倒入模具中，冷冻干燥，得到高温可瓷化气凝胶隔热材料。本发明高温可瓷化气凝胶隔热材料的气凝胶骨架由氧化纤维素和明胶交联形成，具有导热系数低，耐疲劳性能好的特点；该气凝胶骨架中负载有成瓷填料和助熔剂，使本发明隔热材料具有高温可瓷化特性，不仅具有出色的防火性，并且可使隔热材料在高温下仍具有较好的结构稳定性。
Preparation method of high-temperature ceramifiable aerogel thermal insulation material
一种高温可瓷化气凝胶隔热材料的制备方法
DING KAI (Autor:in) / JIN DANDAN (Autor:in) / LIANG ZHENG (Autor:in) / JIN MIAOQIAN (Autor:in) / HU MINGGAO (Autor:in)
11.10.2024
Patent
Elektronische Ressource
Chinesisch
IPC:
C04B
Kalk
,
LIME
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