Toughness Effect of Graphene Oxide-Nano Silica on Thermal-Mechanical Performance of Epoxy Resin  

作　　者：徐铭涛 张苏心 周霞 张岩 王萍 谷志旗 李媛媛 XU Mingtao;ZHANG Suxin;ZHOU Xia;ZHANG Yan;WANG Ping;GU Zhiqi;LI Yuanyuan(Key Laboratory of Jiangsu Province for Silk Engineering,College of Textiles&Clothing Engineering,Soochow University,Suzhou 215123,China;Nantong Hanvo New Material Technology Co.,Ltd.,Nantong 226400,China;Jiangsu Advance Textile Engineering Technology Center,Nantong 226400,China)

机构地区：[1]Key Laboratory of Jiangsu Province for Silk Engineering,College of Textiles&Clothing Engineering,Soochow University,Suzhou 215123,China [2]Nantong Hanvo New Material Technology Co.,Ltd.,Nantong 226400,China [3]Jiangsu Advance Textile Engineering Technology Center,Nantong 226400,China

出　　处：《Journal of Donghua University(English Edition)》2023年第6期580-589,共10页东华大学学报（英文版）

基　　金：Natural Science Foundation of Jiangsu Province,China(No.BK 20180244);Foundation of Qing Lan Project,China;Opening Project of Key Laboratory of Jiangsu Province for Silk Engineering,Soochow University,China(No.KJS2278)。

摘　　要：A graphene oxide/nano-silica(GOS)hybrid was rapidly and easily synthesized using graphene oxide(GO)and nano-silica(nano-SiO_(2))as raw materials,and the synthesized GOS was used to improve the mechanical properties of epoxy resin(EP).The modified EP with different mass fractions of GOS(0,0.1%,0.2%,0.3%and 0.4%)were prepared and studied.The structure,thermal stability,mechanical properties,fracture toughness and failure morphology of the modified EP were analyzed.The results showed that the tensile strength of GOS modified EP increased from 40.6 MPa to 80.2 MPa compared with EP,the critical stress intensity factor of GOS modified EP increased by 65.9%from 0.82 MPa·m^(1/2)to 1.36 MPa·m^(1/2),indicating a significant enhancement in fracture toughness.In addition,failure morphology was observed by scanning electron microscopy(SEM)observation.The toughness mechanism of the modified EP was also discussed.Finally,the thermal stability of the modified EP was improved by the addition of GOS.Compared with neat EP,the initial thermal degradation temperature and glass transition temperature of GOS modified EP increased by 4.5℃and 10.3℃,respectively.

关 键 词：toughness modification epoxy resin(EP) graphene oxide(GO) NANO-SILICA mechanical property failure mechanism thermal behavior 

分 类 号：TQ323.5[化学工程—合成树脂塑料工业]