宇航材料工艺2024，Vol.54Issue(4)：63-69,7.DOI:10.12044/j.issn.1007-2330.2024.04.009
还原氧化石墨烯/酚醛杂化气凝胶的制备与性能研究
Preparation and Properties Study of Reduced Graphene Oxide/Phenolic Resin Hybrid Aerogel
王晓岚 1师建军 1姚祺 1孔磊 1杨云华1
作者信息
- 1. 航天材料及工艺研究所,北京 100076
- 折叠
摘要
Abstract
Reduced graphene oxide/phenolic resin(RGO/PR)hybrid aerogel was prepared by physical blending and ambient drying method based on sol-gel technology.The changes in the microstructure,thermal stability and dielectric properties of RGO/PR hybrid aerogel were investigated with the RGO content,and the application performance of RGO/PR hybrid aerogel as a thermal insulation/microwave absorption composite matrix was explored.The results show that the RGO lamellar structure is uniformly dispersed in the phenolic aerogel skeleton,and the addition of RGO can effectively improve the thermal stability of the aerogel.When RGO with a mass fraction of 4％is added,the Tmax of the hybrid aerogel is increased by 17.28℃.RGO has a significant effect on the dielectric properties of RGO/PR,and the real part of the 2 GHz dielectric constant increases from 2.6 to 4.7,which can realize flexible regulation of the electric properties of PR aerogel.When the aerogel thickness is 20 mm,the minimum reflection loss is less than-10 dB.After the quartz fiber reinforced RGO/PR hybrid aerogel is ablated for 500 s at a surface temperature of 1 200 ℃,the maximum back temperature is only 186.31 ℃,showing good thermal insulation performance.关键词
酚醛树脂/有机气凝胶/还原氧化石墨烯/防热/吸波Key words
Phenolic resin/Organic aerogel/Reduced graphene oxide/Thermal protection/Microwave absorption分类
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王晓岚,师建军,姚祺,孔磊,杨云华..还原氧化石墨烯/酚醛杂化气凝胶的制备与性能研究[J].宇航材料工艺,2024,54(4):63-69,7.
