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Method for preparing aerogel composite material by taking inorganic silica sol as silicon source based on initiator
The invention discloses a method for preparing an aerogel composite material by taking inorganic silica sol as a silicon source based on an initiator. The method comprises the following steps: A, uniformly stirring an alcohol solvent, the initiator, the inorganic silica sol, water and a catalyst according to a mass ratio of (1-30): (0.1-1): (1-50): (0.1-30): (0.1-1) to obtain a mixed sol solution; b, adding acid or alkali into the obtained mixed sol solution to adjust the pH value of the solution to be 6-8; and C, gum dipping: dipping the silica sol solution into the inorganic fiber material through a gum dipping process. The high-quality and low-price inorganic silica sol is selected as an inorganic silicon source material, the raw material cost is low, the production process is simple, an inorganic gel network is initiated by the initiator, the aerogel network structure stability and the aerogel material high-temperature resistance are improved, and meanwhile, the prepared silicon-based aerogel composite material has a good application prospect through test characterization. The heat conductivity coefficient of the aerogel composite material at the room temperature is smaller than 0.021 W/mK, the heat conductivity coefficient at the high temperature of 500 DEG C is smaller than 0.06 W/mK, and the aerogel composite material does not burn at the temperature of 750 DEG C.
本发明公开了基于引发剂以无机硅溶胶为硅源制备气凝胶复合材料方法，包括以下步骤：A、将醇溶剂、引发剂、无机硅溶胶、水、催化剂按1‑30：0.1‑1：1‑50：0.1‑30：0.1‑1的质量比搅拌均匀后得到混合溶胶液；B、将所得混合溶胶液，加入酸或碱调节溶液的pH为6‑8；C、浸胶：通过浸胶工艺使硅溶胶溶液浸入无机纤维材料中。本发明选用优质价廉的无机硅溶胶为无机硅源材料，且原料成本低且生产工艺简单，并由引发剂引发无机凝胶网络，提高气凝胶网络结构稳定性和气凝胶材料的耐高温性能，同时，所制得的硅基气凝胶复合材料，经测试表征，该气凝胶复合材料在室温下的导热系数小于0.021W/mK，在高温500℃下的导热系数小于0.06W/mK，750℃不燃烧。
Method for preparing aerogel composite material by taking inorganic silica sol as silicon source based on initiator
The invention discloses a method for preparing an aerogel composite material by taking inorganic silica sol as a silicon source based on an initiator. The method comprises the following steps: A, uniformly stirring an alcohol solvent, the initiator, the inorganic silica sol, water and a catalyst according to a mass ratio of (1-30): (0.1-1): (1-50): (0.1-30): (0.1-1) to obtain a mixed sol solution; b, adding acid or alkali into the obtained mixed sol solution to adjust the pH value of the solution to be 6-8; and C, gum dipping: dipping the silica sol solution into the inorganic fiber material through a gum dipping process. The high-quality and low-price inorganic silica sol is selected as an inorganic silicon source material, the raw material cost is low, the production process is simple, an inorganic gel network is initiated by the initiator, the aerogel network structure stability and the aerogel material high-temperature resistance are improved, and meanwhile, the prepared silicon-based aerogel composite material has a good application prospect through test characterization. The heat conductivity coefficient of the aerogel composite material at the room temperature is smaller than 0.021 W/mK, the heat conductivity coefficient at the high temperature of 500 DEG C is smaller than 0.06 W/mK, and the aerogel composite material does not burn at the temperature of 750 DEG C.
本发明公开了基于引发剂以无机硅溶胶为硅源制备气凝胶复合材料方法，包括以下步骤：A、将醇溶剂、引发剂、无机硅溶胶、水、催化剂按1‑30：0.1‑1：1‑50：0.1‑30：0.1‑1的质量比搅拌均匀后得到混合溶胶液；B、将所得混合溶胶液，加入酸或碱调节溶液的pH为6‑8；C、浸胶：通过浸胶工艺使硅溶胶溶液浸入无机纤维材料中。本发明选用优质价廉的无机硅溶胶为无机硅源材料，且原料成本低且生产工艺简单，并由引发剂引发无机凝胶网络，提高气凝胶网络结构稳定性和气凝胶材料的耐高温性能，同时，所制得的硅基气凝胶复合材料，经测试表征，该气凝胶复合材料在室温下的导热系数小于0.021W/mK，在高温500℃下的导热系数小于0.06W/mK，750℃不燃烧。
Method for preparing aerogel composite material by taking inorganic silica sol as silicon source based on initiator
基于引发剂以无机硅溶胶为硅源制备气凝胶复合材料方法
SUN ZHENGYUAN (Autor:in) / JING FENG (Autor:in) / TENG KAIMING (Autor:in) / HU DABIN (Autor:in) / ZHANG BOBO (Autor:in) / WANG WANYONG (Autor:in)
15.11.2024
Patent
Elektronische Ressource
Chinesisch
IPC:
C04B
Kalk
,
LIME
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