氧化石墨烯接枝碳纤维跨尺度增强体的电磁学特性研究  

Study on electromagnetic properties ofgraphene oxide grafted carbon fiber cross-scale reinforcement

作　　者：白二雷[1] 王志航 刘俊良 赵靖 周俊鹏 黄河 BAI Erlei;WANG Zhihang;LIU Junliang;ZHAO Jing;ZHOU Junpeng;HUANG He(Aviation Engineering School,Air Force Engineering University,Xi'an 710038,China;Unit 95538,PLA,Chengdu 611430,China;Uint 94968,PLA,Nanjing 211100,China;Unit 93204,PLA,Beijing 100077,China;Engineering Design and Research Institute,Army Research Institute,Beijing 100043,China)

机构地区：[1]空军工程大学航空工程学院,西安7100382 [2]中国人民解放军95538部队,成都611430 [3]中国人民解放军94968部队,南京211100 [4]中国人民解放军93204部队,北京100077 [5]陆军研究院工程设计研究所,北京100043

出　　处：《功能材料》2024年第11期11001-11008,共8页Journal of Functional Materials

基　　金：国家自然科学基金项目(52278287);空军工程大学优秀博士学位论文扶持基金项目(KGD082323002)。

摘　　要：采用“grafting to”化学接枝法将碳纤维通过化学键键合接枝到碳纤维表面,制备氧化石墨烯接枝碳纤维跨尺度增强体(CF-GO)。通过测试碳纤维和CF-GO的单丝电导率和电磁参数,研究了接枝氧化石墨烯对碳纤维电磁学特性的影响。结果表明,与碳纤维相比,CF-GO的单丝电导率有所降低,但CF-GO的复介电常数实部、虚部和介电损耗角正切均有所增大。接枝氧化石墨烯可增强碳纤维的介电损耗能力,但对碳纤维的磁损耗能力没有影响。在0~18 GHz范围内,CF-GO的阻抗匹配率和衰减常数整体上较碳纤维大,其吸波性能更佳,碳纤维在高频段表现出较好的吸波性能。Graphene oxide is grafted to the surface of carbon fiber with chemical grafting method of“grafting to”by bonding of chemical bonds,and graphene oxide grafted carbon fiber cross-scale reinforcement(CF-GO)is prepared after.The effect of grafted graphene oxide on the electromagnetic properties of carbon fiber is studied by measuring the monofilm conductivity and electromagnetic parameters of carbon fiber and CF-GO.The results show that compared with carbon fiber,the monofilament conductivity of CF-GO decreases,but the complex dielectric constant real part,imaginary part and dielectric loss angle tangent of CF-GO increase.The grafted graphene oxide can enhance the dielectric loss capacity of carbon fiber,but has no effect on the magnetic loss capacity of carbon fiber.In the range of 0-18 GHz,the impedance matching rate and attenuation constant of CF-GO are larger than that of carbon fiber on the whole,and its wave absorbing property is better.Carbon fiber shows better wave absorbing property in high frequency.

关 键 词：碳纤维 氧化石墨烯 化学接枝 吸波性能 水泥 

分 类 号：TB332[一般工业技术—材料科学与工程]