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

作者机构：Key Laboratory of Jiangsu Province for Silk EngineeringCollege of Textiles&Clothing EngineeringSoochow UniversitySuzhou 215123China Nantong Hanvo New Material Technology Co.Ltd.Nantong 226400China Jiangsu Advance Textile Engineering Technology CenterNantong 226400China 

出 版 物：《Journal of Donghua University(English Edition)》 (东华大学学报（英文版）)

年 卷 期：2023年第40卷第6期

页      面：580-589页

学科分类：08[工学] 0805[工学-材料科学与工程（可授工学、理学学位）] 080502[工学-材料学] 

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) 

主　　题：toughness modification epoxy resin(EP) graphene oxide(GO) nano-silica mechanical property failure mechanism thermal behavior 

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 *** structure,thermal stability,mechanical properties,fracture toughness and failure morphology of the modified EP were *** 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 *** addition,failure morphology was observed by scanning electron microscopy(SEM)*** toughness mechanism of the modified EP was also ***,the thermal stability of the modified EP was improved by the addition of *** with neat EP,the initial thermal degradation temperature and glass transition temperature of GOS modified EP increased by 4.5℃and 10.3℃,respectively.