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High-strength clay aerogel thermal insulation material and preparation method thereof
The invention relates to the technical field of heat preservation and heat insulation, and discloses a high-strength clay aerogel heat insulation material and a preparation method thereof.The preparation method comprises the steps that a polyvinyl alcohol solution and a chitosan solution are mixed to obtain a mixed solution, then clay and a coupling agent are added, and clay slurry is obtained after uniform stirring and mixing; and transferring the clay slurry into a container, and freeze-drying to obtain the high-strength clay aerogel. According to the invention, the blending of polyvinyl alcohol and chitosan adjusts the microstructure of the aerogel, forms a closed pore channel and a closed surface, and is helpful to hinder air convection and reduce the thermal conductivity coefficient; meanwhile, the double organic components improve the machinability of the aerogel; the clay and the chitosan form chemical crosslinking through the coupling agent, so that the compression strength and the compression modulus of the aerogel are improved; the aerogel heat insulation material obtained by the invention shows good heat insulation performance and excellent strength.
本发明涉及保温隔热技术领域，公开了一种高强度粘土气凝胶隔热材料及其制备方法，将聚乙烯醇溶液与壳聚糖溶液混合得到混合溶液，随后加入粘土、偶联剂，搅拌混合均匀后得到粘土浆料；将粘土浆料转移至容器中后冷冻干燥，得到高强度粘土气凝胶。本发明中，聚乙烯醇和壳聚糖的共混调节了气凝胶的微观结构，形成了封闭孔道和封闭表面，有助于阻碍空气对流，降低热导系数；同时双有机组分改善了气凝胶的可加工性；粘土通过偶联剂与壳聚糖形成化学交联提高了气凝胶的压缩强度和压缩模量；本发明得到的气凝胶隔热材料表现出良好的隔热性能和优异的强度。
High-strength clay aerogel thermal insulation material and preparation method thereof
The invention relates to the technical field of heat preservation and heat insulation, and discloses a high-strength clay aerogel heat insulation material and a preparation method thereof.The preparation method comprises the steps that a polyvinyl alcohol solution and a chitosan solution are mixed to obtain a mixed solution, then clay and a coupling agent are added, and clay slurry is obtained after uniform stirring and mixing; and transferring the clay slurry into a container, and freeze-drying to obtain the high-strength clay aerogel. According to the invention, the blending of polyvinyl alcohol and chitosan adjusts the microstructure of the aerogel, forms a closed pore channel and a closed surface, and is helpful to hinder air convection and reduce the thermal conductivity coefficient; meanwhile, the double organic components improve the machinability of the aerogel; the clay and the chitosan form chemical crosslinking through the coupling agent, so that the compression strength and the compression modulus of the aerogel are improved; the aerogel heat insulation material obtained by the invention shows good heat insulation performance and excellent strength.
本发明涉及保温隔热技术领域，公开了一种高强度粘土气凝胶隔热材料及其制备方法，将聚乙烯醇溶液与壳聚糖溶液混合得到混合溶液，随后加入粘土、偶联剂，搅拌混合均匀后得到粘土浆料；将粘土浆料转移至容器中后冷冻干燥，得到高强度粘土气凝胶。本发明中，聚乙烯醇和壳聚糖的共混调节了气凝胶的微观结构，形成了封闭孔道和封闭表面，有助于阻碍空气对流，降低热导系数；同时双有机组分改善了气凝胶的可加工性；粘土通过偶联剂与壳聚糖形成化学交联提高了气凝胶的压缩强度和压缩模量；本发明得到的气凝胶隔热材料表现出良好的隔热性能和优异的强度。
High-strength clay aerogel thermal insulation material and preparation method thereof
一种高强度粘土气凝胶隔热材料及其制备方法
ZHAO YA (author) / ZHANG BING (author) / GUO LUQI (author) / WANG DAN (author) / SHANG HUISHAN (author) / YANG YINZE (author) / WANG JINHUA (author)
2024-09-27
Patent
Electronic Resource
Chinese
IPC:
C04B
Kalk
,
LIME
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