Eine Plattform für die Wissenschaft: Bauingenieurwesen, Architektur und Urbanistik
Eine Plattform für die Wissenschaft: Bauingenieurwesen, Architektur und Urbanistik
Ceramic fiber aerogel heat insulation pad and preparation method thereof
The invention provides a ceramic fiber aerogel heat insulation pad and a preparation method thereof. The ceramic fiber aerogel heat insulation pad comprises the following raw material components in percentage by weight: 70-80% of tetraethoxysilane TEOS and 20-30% of ceramic fibers. The volume ratio of the ethanol to the TEOS is (3-5): 1, and the dosage of the ammonia water is 8-12% of the volume of the TEOS. The preparation method comprises the following steps: mixing TEOS with ethanol, adding ammonia water as a catalyst, and fully mixing and hydrolyzing; after the hydrolysis reaction starts for 5-15 minutes, slowly adding ceramic fibers into the mixture, and uniformly mixing; stirring until the mixture becomes turbid and starts to solidify; when the gel begins to form, pouring the gel into a mold in a layered pouring manner, and pouring the mixture of the next layer after each layer of gel is slightly cured; and finally freeze-drying and forming. The product disclosed by the invention is of a layer-by-layer overlapped cotton-fiber-shaped structure, has excellent heat insulation and buffering functions, can be used for thermal protection between battery cells, can prevent thermal runaway of the cells, and adapts to expansion and contraction changes of the cells in the charging and discharging process of the battery.
本发明提供一种陶瓷纤维气凝胶隔热垫及其制备方法，其原料组分及其重量百分比如下：70‑80％四乙氧基硅烷TEOS，20‑30％陶瓷纤维；乙醇与TEOS的体积比为3‑5:1，氨水的用量为TEOS体积的8‑12％。制备方法如下：将TEOS与乙醇混合，加入氨水作为催化剂，充分混合水解；在水解反应开始5‑15分钟后，缓慢加入陶瓷纤维到混合物中，混合均匀；搅拌直至混合物变得浑浊且开始凝固；在凝胶开始形成时，倒入模具中，采用分层倒入的方式，每层凝胶略微固化后再倒入下一层混合物；最后冷冻干燥成型。本发明产品为层层叠加的棉絮状结构，具有优良的隔热和缓冲功能，可用于电池电芯间的热防护，可防止电芯热失控，适应电池在充放电过程中电芯的膨胀和收缩变化。
Ceramic fiber aerogel heat insulation pad and preparation method thereof
The invention provides a ceramic fiber aerogel heat insulation pad and a preparation method thereof. The ceramic fiber aerogel heat insulation pad comprises the following raw material components in percentage by weight: 70-80% of tetraethoxysilane TEOS and 20-30% of ceramic fibers. The volume ratio of the ethanol to the TEOS is (3-5): 1, and the dosage of the ammonia water is 8-12% of the volume of the TEOS. The preparation method comprises the following steps: mixing TEOS with ethanol, adding ammonia water as a catalyst, and fully mixing and hydrolyzing; after the hydrolysis reaction starts for 5-15 minutes, slowly adding ceramic fibers into the mixture, and uniformly mixing; stirring until the mixture becomes turbid and starts to solidify; when the gel begins to form, pouring the gel into a mold in a layered pouring manner, and pouring the mixture of the next layer after each layer of gel is slightly cured; and finally freeze-drying and forming. The product disclosed by the invention is of a layer-by-layer overlapped cotton-fiber-shaped structure, has excellent heat insulation and buffering functions, can be used for thermal protection between battery cells, can prevent thermal runaway of the cells, and adapts to expansion and contraction changes of the cells in the charging and discharging process of the battery.
本发明提供一种陶瓷纤维气凝胶隔热垫及其制备方法，其原料组分及其重量百分比如下：70‑80％四乙氧基硅烷TEOS，20‑30％陶瓷纤维；乙醇与TEOS的体积比为3‑5:1，氨水的用量为TEOS体积的8‑12％。制备方法如下：将TEOS与乙醇混合，加入氨水作为催化剂，充分混合水解；在水解反应开始5‑15分钟后，缓慢加入陶瓷纤维到混合物中，混合均匀；搅拌直至混合物变得浑浊且开始凝固；在凝胶开始形成时，倒入模具中，采用分层倒入的方式，每层凝胶略微固化后再倒入下一层混合物；最后冷冻干燥成型。本发明产品为层层叠加的棉絮状结构，具有优良的隔热和缓冲功能，可用于电池电芯间的热防护，可防止电芯热失控，适应电池在充放电过程中电芯的膨胀和收缩变化。
Ceramic fiber aerogel heat insulation pad and preparation method thereof
一种陶瓷纤维气凝胶隔热垫及其制备方法
KE RONGFU (Autor:in) / YAN ZHENYU (Autor:in) / ZHUO KAIJIE (Autor:in)
22.11.2024
Patent
Elektronische Ressource
Chinesisch
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