拟薄水铝石包覆氧化石墨烯改性环氧树脂-氰酸酯复合材料的微观表征及力学性能  

Micro-characterization and mechanical properties of pseudo-boehmite stone-coated graphene oxide/epoxy resin-cyanate composites

作　　者：陈宇飞[1,2] 刘宇龙 赵辉 滕成君[3] 陈思敏 CHEN Yufei;LIU Yulong;ZHAO Hui;TENG Chengjun;CHEN Simin(Key Laboratory of Engineering Dielectrics and Its Application,Ministry of Education,Harbin University of Science and Technology,Harbin 150080,China;School of Materials Science and Engineering,Harbin University of Science and Technology,Harbin 150040,China;Center for Disease Prevention and Control,Xiangfang District,Harbin 150000,China)

机构地区：[1]哈尔滨理工大学工程电介质及应用技术教育部重点实验室,哈尔滨150080 [2]哈尔滨理工大学材料科学与工程学院,哈尔滨150040 [3]哈尔滨市香坊区疾病预防控制中心,哈尔滨150000

出　　处：《复合材料学报》2021年第9期2855-2861,共7页Acta Materiae Compositae Sinica

基　　金：国家自然科学基金(51603057);哈尔滨创新人才专项(2015RAXXJ029)。

摘　　要：以物理法石墨烯为原料,采用改进的Hummers法制备了氧化石墨烯(GO),通过溶胶-凝胶法在氧化石墨烯表面生长拟薄水铝石(AlOOH)纳米颗粒,得到拟薄水铝石包覆氧化石墨烯(GO@AlOOH),以环氧树脂(E51)和双酚A型氰酸酯(BCE)为原料,GO@AlOOH作为增强体,制备GO@AlOOH/E51-BCE复合材料。采用红外光谱和X射线表征GO@AlOOH,结果表明:AlOOH和GO存在着相互作用,且其表面含有羟基活性基团。复合材料的SEM结果显示:GO@AlOOH的加入使得树脂断裂面明显改变,性能得到提升。当掺杂量为0.6wt%时,复合材料的弯曲强度、弯曲模量以及冲击强度达到最大,分别为158.23 MPa、2.37 GPa和46.96 kJ/m^(2)。该复合材料具有优异的力学性能,具有一定的发展潜力。Graphite oxide(GO) was prepared by using a modified layer of graphite powder as the raw material, and pseudoboehmite(AlOOH) nanoparticles were grown on the surface of GO by a sol-gel method to obtain pseudoboehmite stone-coated graphene oxide(GO@AlOOH). The matrix(E51-BCE) was synthesized from epoxy resin(E51) and bisphenol A cyanate(BCE), and GO@AlOOH as reinforcement to prepare the GO@AlOOH modified epoxy resin-cyanate composites(GO@AlOOH/E51-BCE) composites. Infrared analysis and X-ray characterization of GO coating materials shows that AlOOH and GO particles have a particular interaction, and there are certain hydroxyl groups on the surface of the material after coating. The composite samples were characterized by SEM showing that the addition of GO@AlOOH significantly changes the fracture surface of the resin and improves the performance. When the doping amount is 0.6 wt%, the bending strength, bending modulus and impact strength of the composite material reach the maximum, which are 158.23 MPa, 2.37 GPa and 46.96 kJ/m^(2), respectively. The composite material has excellent mechanical properties and specific development potential.

关 键 词：双酚A型氰酸酯 氧化石墨烯 拟薄水铝石 溶胶-凝胶法 力学性能 

分 类 号：TB332[一般工业技术—材料科学与工程]