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A platform for research: civil engineering, architecture and urbanism
Novel micro-nano synergistic carbon aerogel-based composite material as well as preparation method and application thereof
The invention belongs to the technical field of materials, and discloses a preparation method of a novel micro-nano synergistic carbon aerogel-based composite material, which comprises the following steps: by taking nano-cellulose gel as a raw material, mixing with deionized water and carrying out ultrasonic treatment to obtain nano-cellulose uniform dispersion liquid with required concentration; mixing the dispersion liquid and the graphite oxide solution, performing ultrasonic treatment to obtain gel, performing water bath heating, putting the gel into a directional freezing mold, performing molding, taking out the molded product, and performing freeze drying for 10-15 hours to obtain nanofiber/graphite oxide aerogel; the nanofiber/graphite oxide aerogel is subjected to heat preservation for 4-4.5 h at the temperature of 450-550 DEG C in an inert gas environment and then subjected to heat preservation for 2-3 h at the temperature of 950-1050 DEG C, and the nanofiber/graphite oxide aerogel is obtained. The carbon aerogel prepared by the method disclosed by the invention has excellent high-temperature resistance and oxidation resistance and relatively excellent compression resilience, so that the carbon aerogel has a wide application prospect when being applied to the fields of aerospace, civil high-performance damping, sensors and the like.
本发明属于材料技术领域，公开一种新型微纳协同碳气凝胶基复合材料的制备方法，包括如下步骤：以纳米纤维素凝胶为原料，与去离子水混合超声后，得到所需浓度的纳米纤维素均匀分散液；将分散液和氧化石墨溶液混合，超声至凝胶状，进行水浴加热后，置于定向冷冻模具中后，成型后，取出冷冻干燥10～15h，得到纳米纤维/氧化石墨气凝胶；将纳米纤维/氧化石墨气凝胶在惰性气体环境下于450～550℃保温4～4.5h，再于950～1050℃保温2～3h，得到。本发明方法制备得到的碳气凝胶具有优异的耐高温和抗氧化性能，且具有较优异的压缩回弹性能，使其应用于在航空航天和民用高性能阻尼、传感器等领域有着广泛的应用前景。
Novel micro-nano synergistic carbon aerogel-based composite material as well as preparation method and application thereof
The invention belongs to the technical field of materials, and discloses a preparation method of a novel micro-nano synergistic carbon aerogel-based composite material, which comprises the following steps: by taking nano-cellulose gel as a raw material, mixing with deionized water and carrying out ultrasonic treatment to obtain nano-cellulose uniform dispersion liquid with required concentration; mixing the dispersion liquid and the graphite oxide solution, performing ultrasonic treatment to obtain gel, performing water bath heating, putting the gel into a directional freezing mold, performing molding, taking out the molded product, and performing freeze drying for 10-15 hours to obtain nanofiber/graphite oxide aerogel; the nanofiber/graphite oxide aerogel is subjected to heat preservation for 4-4.5 h at the temperature of 450-550 DEG C in an inert gas environment and then subjected to heat preservation for 2-3 h at the temperature of 950-1050 DEG C, and the nanofiber/graphite oxide aerogel is obtained. The carbon aerogel prepared by the method disclosed by the invention has excellent high-temperature resistance and oxidation resistance and relatively excellent compression resilience, so that the carbon aerogel has a wide application prospect when being applied to the fields of aerospace, civil high-performance damping, sensors and the like.
本发明属于材料技术领域，公开一种新型微纳协同碳气凝胶基复合材料的制备方法，包括如下步骤：以纳米纤维素凝胶为原料，与去离子水混合超声后，得到所需浓度的纳米纤维素均匀分散液；将分散液和氧化石墨溶液混合，超声至凝胶状，进行水浴加热后，置于定向冷冻模具中后，成型后，取出冷冻干燥10～15h，得到纳米纤维/氧化石墨气凝胶；将纳米纤维/氧化石墨气凝胶在惰性气体环境下于450～550℃保温4～4.5h，再于950～1050℃保温2～3h，得到。本发明方法制备得到的碳气凝胶具有优异的耐高温和抗氧化性能，且具有较优异的压缩回弹性能，使其应用于在航空航天和民用高性能阻尼、传感器等领域有着广泛的应用前景。
Novel micro-nano synergistic carbon aerogel-based composite material as well as preparation method and application thereof
一种新型微纳协同碳气凝胶基复合材料、制备方法和应用
WANG SIHUI (author) / GONG XIAOPENG (author)
2023-08-15
Patent
Electronic Resource
Chinese
IPC:
C04B
Kalk
,
LIME
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