无卤阻燃不饱和聚酯浸渍树脂的研究  

Study on halogen-free flame retardant unsaturated polyester impregnating resin

作　　者：周展 王健 龚桂胜 李雪 宋桂霞 刘杰军 吕雨农 ZHOU Zhan;WANG Jian;GONG Guisheng;LI Xue;SONG Guixia;LIU Jiejun;LÜYunong(Hunan Electrical College of Technology,Xiangtan 411101,China;Guilin Electrical Equipment Scientific Research Institute Co.,Ltd.,Guilin 541004,China;Institute for Advanced Materials and Technology University of Science and Technology Beijing,Beijing 100083,China;Xiangtan Electrical Manufacturing Group,Xiangtan 411101,China)

机构地区：[1]湖南电气职业技术学院,湖南湘潭411101 [2]桂林电器科学研究院有限公司,广西桂林541004 [3]北京科技大学新材料技术研究院,北京100083 [4]湘电集团有限公司,湖南湘潭411101

出　　处：《绝缘材料》2023年第11期23-27,共5页Insulating Materials

基　　金：湖南省自然科学基金-省市联合基金项目(CG-2022JJ50110);湖南电气职业技术学院自然科学基金项目(2023ZK01)。

摘　　要：将无卤阻燃剂DOPO引入到不饱和聚酯中制备得到无卤阻燃不饱和聚酯绝缘浸渍树脂,并通过红外光谱、热重测试及阻燃性能实验分析加入阻燃剂对树脂各项性能的影响。结果表明:采用MTHPA作为载体,将DOPO先与甲基四氢苯酐(MTHPA)反应,再与顺丁烯二酸酐(MA)发生加成反应,可以提高DOPO的加成转化率,树脂均匀,固化后透明,阻燃性好,阻燃等级达到UL94 V0级;随着磷含量的提高,树脂的热稳定性下降,磷含量控制在2.7%左右较为合适;当不饱和酸与饱和酸的摩尔比为1∶1至1.5∶1,同时采用复配引发阻聚体系时,树脂具有较好的反应活性和存放稳定性。A halogen-free flame retardant unsaturated polyester insulating impregnating resin was prepared by introducing DOPO into unsaturated polyester.The effect of adding flame retardant on the properties of the resin were analyzed by infrared spectroscopy,thermogravimetric analysis and flame retardancy experiment.The results show that the addition conversion rate of DOPO can be improved by using methyl tetrahydrophthalic anhydride(MTHPA)as the carrier to react with DOPO first and then with maleic anhydride(MA).The prepared resin is uniform,transparent after curing,and has good flame retardance,which can reach UL94 V0 level.With the increase of phosphorus content,the thermal stability of resin decreases,and the optimal phosphorus content is about 2.7%.When the molar ratio of unsaturated acid to saturated acid is 1∶1 to 1.5∶1 and using the compound initiation polymerization system,the resin has good reactivity and storage stability.

关 键 词：磷系阻燃剂 DOPO 不饱和聚酯 浸渍树脂 

分 类 号：TM215[一般工业技术—材料科学与工程]