MOF-74(Ni)@聚磷酸铵的制备及对环氧树脂阻燃性能的影响  

Preparation of MOF-74(Ni)@Ammonium Polyphosphate and Its Effect on the Flame-Retardant Properties of Epoxy Composites

作　　者：杜栩烨 林健 杨宕莎 岳振青 朱妍妍 李建根 王新龙[1] Xuye Du;Jian Lin;Dangsha Yang;Zhenqing Yue;Yanyan Zhu;Jiangen Li;XinlongWang(School of Chemical Engineering,Nanjing University of Science and Technology,Nanjing 210094,China)

机构地区：[1]南京理工大学化学与化工学院,江苏南京210094

出　　处：《高分子材料科学与工程》2023年第6期64-70,共7页Polymer Materials Science & Engineering

基　　金：江苏省科技支撑计划(社会发展)(BE 2013714);江苏省高等学校优先学术计划。

摘　　要：通过溶剂热法合成了MOF-74(Ni)@聚磷酸铵(APP),将其与环氧树脂(EP)复合制备兼具良好阻燃与力学性能的环氧树脂复合材料。复合材料的氧指数、水平垂直燃烧以及电子拉力机测试结果表明:添加5%MOF-74(Ni)@APP的样品与添加5%APP的样品相比,极限氧指数从26.2%提高到28.0%,UL-94测试从NR提高至通过V-1等级,同时力学性能如拉伸强度、弯曲强度、弹性模量和断裂伸长率分别提高45.8%,6.87%,19.67%和22.68%。对燃烧后残炭的分析说明,负载的MOF-74(Ni)使残炭的石墨化程度更高,从而有利于材料阻燃性能的提高。The MOF-74(Ni)@ammonium polyphosphate(APP)was prepared by solvent thermal method.The composites were manufactured using MOF-74(Ni)@APP and epoxy resin(EP)to improve the flame retardant and mechanical properties.The flame retardant and mechanical properties of the MOF-74(Ni)@APP/EP composite were tested by oxygen index tester,horizontal vertical combustion tester and universal electronic tensile machine.The experimental results show that when the mass fraction of MOF-74(Ni)@APP is 5%,compared with sample with only 5% of APP,the limiting oxygen index(LOI)is increased from 26.2% to 28.0%,the UL-94 reaches V-1 level.What’s more,the tensile strength,bending strength,elastic modulus,and fracture elongation of the composite material are increased by 45.8%,6.87%,19.67%,and 22.68%,respectively.The analysis of the residual carbon after combustion shows that the loaded MOF-74(Ni)makes the graphitization degree of the residual carbon higher,which is conducive to the improvement of flame retardant performance of the material.

关 键 词：环氧树脂 金属有机骨架 聚磷酸铵 阻燃 

分 类 号：TB332[一般工业技术—材料科学与工程]