Eine Plattform für die Wissenschaft: Bauingenieurwesen, Architektur und Urbanistik
Eine Plattform für die Wissenschaft: Bauingenieurwesen, Architektur und Urbanistik
Three-dimensional nano aerogel material based on ultrasonic-assisted freezing technology and preparation method of three-dimensional nano aerogel material
The invention relates to a three-dimensional nano aerogel material based on an ultrasonic-assisted freezing technology and a preparation method of the three-dimensional nano aerogel material, and relates to the technical field of high polymer materials. The preparation method of the three-dimensional nano aerogel material comprises the following steps: preparing a polyamide acid salt solution; carrying out ultrasonic-assisted freezing on the polyamide acid salt solution; performing freeze drying to obtain polyamide acid aerogel; and carrying out thermal imidization treatment and graphitization treatment to obtain the three-dimensional nano aerogel material. According to the method, the ultrasonic field effect is introduced into the preparation of the aerogel material to control the thickness of the sheet layer of the aerogel material, so that the prepared three-dimensional nano aerogel material has high conductivity, high thermal conductivity, high specific surface area and excellent electromagnetic shielding performance and mechanical performance.
本发明涉及一种基于超声辅助冷冻技术的三维纳米气凝胶材料及其制备方法，涉及高分子材料技术领域。本发明三维纳米气凝胶材料制备方法包括：制备聚酰胺酸盐溶液；再将聚酰胺酸盐溶液进行超声辅助冷冻；再进行冷冻干燥，得到聚酰胺酸气凝胶；再热酰亚胺化处理以及石墨化处理，得到三维纳米气凝胶材料。该方法将超声场作用引入到气凝胶材料的制备中实现对气凝胶材料片层厚度的控制，使得制备得到的三维纳米气凝胶材料具备高电导率、高热导率、高比表面积以及优异的电磁屏蔽性能和机械性能。
Three-dimensional nano aerogel material based on ultrasonic-assisted freezing technology and preparation method of three-dimensional nano aerogel material
The invention relates to a three-dimensional nano aerogel material based on an ultrasonic-assisted freezing technology and a preparation method of the three-dimensional nano aerogel material, and relates to the technical field of high polymer materials. The preparation method of the three-dimensional nano aerogel material comprises the following steps: preparing a polyamide acid salt solution; carrying out ultrasonic-assisted freezing on the polyamide acid salt solution; performing freeze drying to obtain polyamide acid aerogel; and carrying out thermal imidization treatment and graphitization treatment to obtain the three-dimensional nano aerogel material. According to the method, the ultrasonic field effect is introduced into the preparation of the aerogel material to control the thickness of the sheet layer of the aerogel material, so that the prepared three-dimensional nano aerogel material has high conductivity, high thermal conductivity, high specific surface area and excellent electromagnetic shielding performance and mechanical performance.
本发明涉及一种基于超声辅助冷冻技术的三维纳米气凝胶材料及其制备方法，涉及高分子材料技术领域。本发明三维纳米气凝胶材料制备方法包括：制备聚酰胺酸盐溶液；再将聚酰胺酸盐溶液进行超声辅助冷冻；再进行冷冻干燥，得到聚酰胺酸气凝胶；再热酰亚胺化处理以及石墨化处理，得到三维纳米气凝胶材料。该方法将超声场作用引入到气凝胶材料的制备中实现对气凝胶材料片层厚度的控制，使得制备得到的三维纳米气凝胶材料具备高电导率、高热导率、高比表面积以及优异的电磁屏蔽性能和机械性能。
Three-dimensional nano aerogel material based on ultrasonic-assisted freezing technology and preparation method of three-dimensional nano aerogel material
基于超声辅助冷冻技术的三维纳米气凝胶材料及其制备方法
YANG GANG (Autor:in) / XIAO HANG (Autor:in) / HU JIANGHUAI (Autor:in)
13.09.2024
Patent
Elektronische Ressource
Chinesisch
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