环氧树脂/聚芳醚腈复合材料的制备及性能研究  

Preparation and Properties of Epoxy Resin/Polyaryl Ether Nitrile Composites

作　　者：覃建洪 张伦志 陈卓[1] 赵春霞[1] 向东 武元鹏[1] QIN Jianhong;ZHANG Lunzhi;CHEN Zhuo;ZHAO Chunxia;XIANG Dong;WU Yuanpeng(College of New Energy and Materials,Southwest Petroleum University,Chengdu 610500,China)

机构地区：[1]西南石油大学新能源与材料学院,四川成都610500

出　　处：《塑料工业》2023年第8期35-39,91,共6页China Plastics Industry

基　　金：国家自然科学基金青年基金(12102374);四川省科技计划项目(2022YFG0113)。

摘　　要：采用环氧树脂(EP)和聚芳醚腈(PEN)制备了EP/PEN复合材料。通过万能材料试验机、热重分析仪(TG)和动态热机械分析仪(DMA)探讨分析了PEN对EP力学性能和热性能的影响。EP/PEN-10%具有最佳力学性能,其拉伸强度和弯曲强度分别达到了79.1 MPa和140.1 MPa,相比纯EP分别提高了22.6%和56.8%。冲击强度高达15.9 MPa/m^(2),相比纯环氧树脂提高了107.5%。拉伸样条断面刻蚀前后的扫描电子显微镜(SEM)观察结果表明,PEN呈球型均匀分散在基体中,可有效分散外力作用能,提高材料力学性能。同时,10%的PEN可使EP的初始分解温度(T onset)提高了11.7℃,玻璃化转变温度(T g)提高了7.9℃。PEN可有效提高EP的综合性能,有望拓展EP的应用领域。Epoxy resin(EP)/poly(aryl ether nitriles)(PEN)composites were prepared based on EP and PEN.The influence of PEN on the mechanical and thermal properties of EP was investigated by means of universal material testing machine,thermogravimetric analyzer(TG)and dynamic thermo-mechanical analyzer(DMA).EP/PEN-10%has the best mechanical properties.Its tensile strength and bending strength could reach up to 79.1 MPa and 140.1 MPa,respectively,which are 22.6%and 56.8%higher than that of the pure EP.The impact strength of EP/PEN-10%is up to 15.9 MPa/m^(2),which is 107.5%higher than that of pure EP.Scanning electron microscope(SEM)observation before and after the etching of the tensile spline section shows that PEN is uniformly dispersed in the matrix with a spherical shape,which can effectively disperse the external force energy and improve the mechanical properties of the material.Meanwhile,10%PEN can increase the initial decomposition temperature(T onset)of EP by 11.7℃and the glass transition temperature(T g)by 7.9℃.PEN can effectively improve the comprehensive performance of EP and is expected to expand the application field of EP.

关 键 词：聚芳醚腈 环氧树脂 力学性能 玻璃化转变温度 

分 类 号：TQ323.5[化学工程—合成树脂塑料工业]