磁功能化石墨烯改性环氧树脂及其复合材料的性能  

Properties of Epoxy Resin Based Composite Incorporated with Magnetically Functionalized Reduction Graphene Oxide

作　　者：曾强 王荣超 刘绮 彭化南 陈平[2] ZENG Qiang;WANG Rongchao;LIU Qi;PENG Huanan;CHEN Ping(School of Chemistry and Environmental Science,Shangrao Normal University,Shangrao 334001,China;Key Laboratory of Materials Modification by Laser,Ion and Electron Beams of Ministry of Education&School of Chemical Engineering,Dalian University of Technology,Dalian 116024,China)

机构地区：[1]上饶师范学院化学与环境科学学院,上饶334001 [2]大连理工大学化工学院三束材料改性教育部重点实验室,大连116024

出　　处：《材料研究学报》2022年第12期881-886,共6页Chinese Journal of Materials Research

基　　金：国家自然科学基金(62065016);江西省教育厅科学技术研究项目(GJJ180886);上饶师范学院校级自选课题(201904),上饶师范学院大学生创新创业训练计划(2019-CX-20);三束材料改性教育部重点实验室基金(KF2004)。

摘　　要：先以氧化石墨烯和三氯化铁为原料并用高温水热法制备还原氧化石墨烯/Fe_(3)O_(4)(rGO/Fe_(3)O_(4))复合物,再用其改性环氧树脂制备出rGO/Fe_(3)O_(4)/环氧树脂复合材料,研究了(rGO/Fe_(3)O_(4))复合物的添加对其性能的影响。结果表明,(rGO/Fe_(3)O_(4))复合物的添加量为30%的复合材料其冲击强度达到27 kJ/m^(2),比纯环氧树脂的冲击强度提高了58.8%。在环氧树脂中添加rGO/Fe_(3)O_(4)复合物,使其吸波性能显著提高。rGO/Fe_(3)O_(4)复合物的添加量为20%的复合材料,其反射率在小于-10 dB的频率范围为7.7~12.3 GHz,有效吸收频宽达4.6 GHz,覆盖了整个X波段。随着石墨烯含量的提高rGO/Fe_(3)O_(4)/环氧树脂复合材料达到最小反射率的位置向低频位置移动,控制rGO和Fe_(3)O_(4)的相对含量可调控这种复合材料的吸波性能。The magnetic functionalized rGO/Fe_(3)O_(4)was prepared by hydrothermal method with graphene oxide and ferric chloride as raw materials,and subsequently rGO/Fe_(3)O_(4)particles were blend in epoxy resin to prepared composite rGO/Fe_(3)O_(4)/epoxy resin.The results show that the impact strength of rGO/Fe_(3)O_(4)/epoxy resin composites reaches 27 kJ/m~2 when the addition amount of rGO/Fe_(3)O_(4)is 30%,which is 58.8%higher than that of the plain epoxy resin.In addition,the absorption performance of epoxy resin composite is significantly enhanced after the addition of rGO/Fe_(3)O_(4).When the addition of rGO/Fe_(3)O_(4)is 20%,the reflection loss of the rGO/Fe_(3)O_(4)/epoxy resin composite is less than-10 d B in the frequency range of 7.7~12.3 GHz.The effective absorption bandwidth (reflection loss<-10 dB) is up to 4.6 GHz,which covering the whole X-band.With the increase of graphene content,the position of the minimum reflection loss3O_(4)/epoxy resin composites moves towards low-frequencies.It follows that by controlling the relative content of rGO and Fe_(3)O_(4),the absorbing performance of rGO/Fe_(3)O_(4)/epoxy resin composites can be adjusted to the meet the requirements for materials of desired absorbing performance.

关 键 词：复合材料 还原氧化石墨烯 Fe_(3)O_(4) 改性 电磁吸波性能 

分 类 号：TB332[一般工业技术—材料科学与工程]