含磷离子液体/石墨烯环氧复合材料力学及阻燃性能的研究  

Study on mechanical and flame retardant properties of phosphorus-containing ILs/GO/EP composite

作　　者：徐子策 尚垒[1] 敖玉辉[1] Xu Zice;Shang Lei;Ao Yuhui(Jilin Province Key Laboratory of Carobn Fiber Development and Application,College of Chemistry and Life Science,Changchun University of Technology,Changchun 130012)

机构地区：[1]长春工业大学化学与生命科学学院,吉林省碳纤维开发与应用重点实验室,长春130012

出　　处：《化工新型材料》2022年第6期112-116,共5页New Chemical Materials

基　　金：吉林省自然科学基金项目(20190201301JC)。

摘　　要：针对环氧树脂的阻燃问题,基于咪唑与石墨层之间的π-π相互作用,设计了咪唑基含磷离子液体([Dmim]Es)与石墨烯在环氧树脂(EP)中的分散体系。复合材料的热性能和阻燃性能研究表明,改性后的石墨烯纳米片材提高了环氧树脂的阻燃、抑烟和热稳定性。当加入7.5%[Dmim]Es和1%石墨烯(Gr)时,极限氧指数达到32.2%,UL-94测试等级达到V-0。力学性能测试表明,共混物的拉伸性能和冲击性能分别提高了23%和44%。离子液体[Dmim]Es改性的石墨烯纳米片材基体中的良好分散性不仅给EP带来了优异的力学性能,而且具有良好的阻燃性。Aiming at the flame retardant problem of epoxy(EP)resin,based on theπ-πstacking effect between imidazole and graphite layer,the dispersion system of imidazolyl phosphorus-containing ionic liquid(ILs)([Dmim]Es)and graphene(GO)in EP resin was designed.The study on the thermal and flame retardant properties of the composites showed that the modified GO nanosheets improved the flame retardancy,smoke suppression and thermal stability of EP resin.When 7.5wt%[Dmim]Es and 1%GO were added,and the limiting oxygen index reached 32.2%.The mechanical properties test showed that the tensile properties and impact properties of the blends were increased by 23%and 44%,respectively.The results shown that the good dispersion of GO nanosheet modified by ionic liquid[Dmim]Es not only bringed excellent mechanical properties to the EP,but also had good flame retardancy.

关 键 词：环氧树脂 离子液体 石墨烯 9 10-二氢-9-氧杂-10-磷杂菲-10-氧化物 阻燃剂 复合材料 

分 类 号：TB332[一般工业技术—材料科学与工程]