Eine Plattform für die Wissenschaft: Bauingenieurwesen, Architektur und Urbanistik
Eine Plattform für die Wissenschaft: Bauingenieurwesen, Architektur und Urbanistik
Assembled and combined type aerogel composite insulation board
The invention belongs to the technical field of insulation boards, and particularly relates to an assembled and combined aerogel composite insulation board, which is composed of composite microspheres, a foaming agent and carbon fibers, and is prepared by the following steps: S1, under water bath heating, dissolving polyvinylpyrrolidone in absolute ethyl alcohol, adding modified silicon dioxide aerogel and styrene, continuing to keep stirring, adding a foaming agent, and stirring; performing microwave heating, centrifugal separation, washing and drying to obtain composite microspheres; and S2, stirring in a high-speed stirrer, uniformly mixing the composite microspheres, a foaming agent and carbon fibers, pouring into a mold, carrying out heat preservation foaming, cooling at room temperature, and demolding. The modified silicon dioxide aerogel in the composite microspheres has a nanoscale porous structure, so that the heat conductivity coefficient of the material is greatly reduced. The air or the vacuum layer in the nanometer holes is used as a poor conductor of heat, so that a heat conduction path is effectively blocked, a heat bridge effect and acceleration of local heat conduction are avoided, and the heat preservation effect is remarkably improved.
本发明属于保温板技术领域，具体地涉及一种装配组合式气凝胶复合保温板，由复合微球、发泡剂和碳纤维组成，包括以下步骤制得：S1、水浴加热下，将聚乙烯吡咯烷酮溶解在无水乙醇中，加入改性二氧化硅气凝胶和苯乙烯，继续保持搅拌，微波加热，离心分离，洗涤干燥，得到复合微球；S2、在高速搅拌机中搅拌将复合微球、发泡剂和碳纤维混合均匀，倒入模具中保温发泡，在室温下冷却后脱模。本发明中复合微球内部的改性二氧化硅气凝胶具有纳米级的多孔结构，极大地降低了材料的导热系数。纳米孔洞中的空气或真空层作为热的不良导体，有效地阻断了热传导路径，避免了热桥效应和局部热传导的加速，从而显著提升了保温效果。
Assembled and combined type aerogel composite insulation board
The invention belongs to the technical field of insulation boards, and particularly relates to an assembled and combined aerogel composite insulation board, which is composed of composite microspheres, a foaming agent and carbon fibers, and is prepared by the following steps: S1, under water bath heating, dissolving polyvinylpyrrolidone in absolute ethyl alcohol, adding modified silicon dioxide aerogel and styrene, continuing to keep stirring, adding a foaming agent, and stirring; performing microwave heating, centrifugal separation, washing and drying to obtain composite microspheres; and S2, stirring in a high-speed stirrer, uniformly mixing the composite microspheres, a foaming agent and carbon fibers, pouring into a mold, carrying out heat preservation foaming, cooling at room temperature, and demolding. The modified silicon dioxide aerogel in the composite microspheres has a nanoscale porous structure, so that the heat conductivity coefficient of the material is greatly reduced. The air or the vacuum layer in the nanometer holes is used as a poor conductor of heat, so that a heat conduction path is effectively blocked, a heat bridge effect and acceleration of local heat conduction are avoided, and the heat preservation effect is remarkably improved.
本发明属于保温板技术领域，具体地涉及一种装配组合式气凝胶复合保温板，由复合微球、发泡剂和碳纤维组成，包括以下步骤制得：S1、水浴加热下，将聚乙烯吡咯烷酮溶解在无水乙醇中，加入改性二氧化硅气凝胶和苯乙烯，继续保持搅拌，微波加热，离心分离，洗涤干燥，得到复合微球；S2、在高速搅拌机中搅拌将复合微球、发泡剂和碳纤维混合均匀，倒入模具中保温发泡，在室温下冷却后脱模。本发明中复合微球内部的改性二氧化硅气凝胶具有纳米级的多孔结构，极大地降低了材料的导热系数。纳米孔洞中的空气或真空层作为热的不良导体，有效地阻断了热传导路径，避免了热桥效应和局部热传导的加速，从而显著提升了保温效果。
Assembled and combined type aerogel composite insulation board
一种装配组合式气凝胶复合保温板
YANG YANG (Autor:in) / REN LI (Autor:in) / SONG HUI (Autor:in) / XIAO WANXIN (Autor:in) / JU YAO (Autor:in) / SONG LILI (Autor:in) / YIN HAORAN (Autor:in)
10.09.2024
Patent
Elektronische Ressource
Chinesisch
IPC:
C04B
Kalk
,
LIME
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