氧化石墨烯改性环氧树脂的制备及性能  

Preparation and its properties of graphene oxide modified epoxy resins

作　　者：南欣欣 贾玮民 郝毅杰 安云 袁才登[1,2] NAN Xin-xin;JIA Wei-min;HAO Yi-jie;AN Yun;YUAN Cai-deng(School of Chemical Engineering and Technology,Tiajin University,Tiajin 300350,China;TJU-UCGM Joint Research Center of Graphene Application,Tianjin 300350,China;Unigram Carbon Graphene Materials Co.Ltd.,Gaobeidian 074000,China)

机构地区：[1]天津大学化工学院,天津300350 [2]天津大学-隆泰丰博石墨应用联合研究中心,天津300350 [3]隆泰丰博石墨烯材料有限公司,河北高碑店074000

出　　处：《热固性树脂》2020年第4期6-11,共6页Thermosetting Resin

摘　　要：以鳞片石墨为原料合成了氧化石墨烯(GO),采用硅烷偶联剂KH550对GO进行了表面修饰,获得了功能化的氧化石墨烯(KGO),最后采用KGO与环氧树脂复合,考察了GO用量对环氧树脂性能的改善效果。采用红外光谱、X射线光电子能谱、X射线衍射光谱、原子力显微镜、热重分析、扫描电镜和力学试验机分别对GO、KGO和KGO/EP的基本性质和力学性能、热性能进行了表征和检测。结果表明,KGO表面成功接枝了硅烷偶联络剂,当KGO质量分数为0.5%时,复合材料的拉伸强度和断裂伸长率同时达到最大值,比纯环氧树脂分别提高9.6%和44.3%。The graphene oxide(GO)was prepared using flake graphite as raw materials. Then the functional graphene oxide(KGO)was obtained by the surface modification of GO with coupling agent 3-aminopropyl trimethoxysilane(KH550). The composite of KGO and epoxy resins was finally formulated and the effect of KGO content on the properties of the composite was investigated. The basic properties,mechanical properties and thermal properties of GO,KGO and KGO/EP were characterized by Fourier transform infra-red spectroscopy,X-ray photoelectron spectroscopy,X-ray diffractometer,atomic force microscope,scanning electron microscope,thermogravimetric analyzer and mechanical testing machine. The results showed that the coupling agent was successfully grafted onto the GO surface. When the KGO content was 0.5 wt%,the maximum tensile strength and elongation at break of KGO/EP composite were achieved and increased by 9.6% and 44.3%,respectively,comparing with those of the unmodified pure epoxy resins.

关 键 词：氧化石墨烯 环氧树脂﹔偶联剂 3-氨丙基三乙氧基硅烷 拉伸强度﹔断裂伸长率 

分 类 号：TQ323.5[化学工程—合成树脂塑料工业]