石墨烯/碳纤维/芳纶电磁屏蔽纸的制备与性能研究

Preparation and Properties of Graphene/Carbon Fiber/Aramid Electromagnetic Shielding Paper

关键词:  电磁屏蔽  碳纤维  石墨烯  芳纶纤维  纸基复合材料

Key Words:electromagnetic shielding  carbon fiber  graphene  aramid fibers  paper matrix composites

摘要:本研究以耐高温的芳纶短切纤维和芳纶沉析纤维为纸基纤维材料，导电性优良的碳纤维为导电骨架，石墨烯为电磁屏蔽增强材料，结合抄纸和涂布工艺制备得到石墨烯/碳纤维/芳纶电磁屏蔽纸。结果表明，制备的石墨烯/碳纤维/芳纶电磁屏蔽纸具有“三明治结构”，其厚度为333.9 μm时，在X波段的电磁屏蔽效能SE_T高达70.3 dB，电导率高达1 685 S/m，兼有较好的耐高温性和耐腐蚀性。

Abstract:In this paper， graphene/carbon fiber/aramid electromagnetic shielding paper was prepared by combining high-temperature resistant aramid chopped fiber and aramid precipitation fiber as paper-based materials， carbon fiber with excellent conductivity as conductive skeleton， and graphene as electromagnetic shielding reinforcement material. The results showed that the prepared graphene/carbon fiber/aramid electromagnetic shielding paper had a “sandwich structure”. With a thickness of 333.9 μm， the electromagnetic shielding efficiency in X-band was up to 70.3 dB， and the conductivity of 1 685 S/m， and excellent high-temperature resistance and corrosion resistance.