钛系和锑系催化剂对阻燃聚酯制备的影响  

Effect of titanium and antimony catalysts on the preparation of flame retardant polyester

作　　者：俞雨农 郑兵 蒲新明 冯卫芳 张顺花[1] YU Yunong;ZHENG Bing;PU Xinming;FENG Weifang;ZHANG Shunhua(College of Materials Science and Engineering,Zhejiang Sci-Tech University,Hangzhou 310018,China;Wankai New Materials Co.,Ltd.,Haining 314415,China;Zhengkai Textile Co.,Ltd.,Hangzhou 311223,China)

机构地区：[1]浙江理工大学材料科学与工程学院,杭州310018 [2]万凯新材料股份有限公司,浙江海宁314415 [3]正凯纺织有限公司,杭州311223

出　　处：《现代纺织技术》2022年第4期94-101,共8页Advanced Textile Technology

基　　金：海宁市协同创新项目(20210102);萧山区重科技计划项目(20202105)。

摘　　要：为了探究不同种类催化剂对阻燃聚酯聚合工艺及性能的影响,选用了两种钛系催化剂和一种锑系催化剂,以2-羧乙基苯基次磷酸为阻燃单体,采用直接酯化法合成阻燃改性共聚酯,探讨了不同的催化剂对合成共聚酯性能的影响。结果表明:两种钛系催化剂制备的阻燃聚酯(Ti-PET)的缩聚反应时间都长于锑系阻燃聚酯(Sb-PET),其特性黏度低于Sb-PET的;使用乙二醇钛作为催化剂制备的阻燃聚酯呈深黄色,采用自制的Ti/Zn催化剂制备的阻燃聚酯呈淡黄色;热分析测试表明:两种Ti-PET的熔点(T_(m))、峰顶温度(T_(p))都高于Sb-PET,其熔融热焓和结晶热焓都高于Sb-PET;其热稳定性更好,残碳量高;阻燃性能测试表明,3种阻燃聚酯的极限氧指数均在29.5%左右,UL-94测试结果都达到V-0级。In order to explore the influence of different types of catalysts on the polymerization process and properties of flame-retardant polyester,two kinds of titanium-based catalysts and one kind of antimony-based catalyst were selected to synthesize flame-retarded modified copolyesters by direct esterification methodusing 2-carboxyethyl(phenyl)phosphinicacid as the flame retarded monomer,and the influence of different catalysts on the performance of the copolyester was discussed.The results show that the polycondensation reaction time of the flame-retardant polyester(Ti-PET)prepared by the two titanium-based catalysts is longer than that of the flame-retardant polyester(Sb-PET)prepared by the antimony-based catalyst,and the intrinsic viscosity of the two Ti-PETs is lower than that of Sb-PET;the flame-retardant polyester prepared with ethylene glycol titanium catalyst is dark yellow,and the flame-retardant polyester prepared with self-made Ti/Zn catalyst is light yellow;DSC test shows that the melting temperature(T_(m))and peak temperature(T_(p))of two kinds of Ti-PET are higher than those of Sb-PET,and their melting enthalpy and crystallization enthalpy are also higher thanthose of Sb-PET;TG test shows that Ti-PET has good thermal stability and high residual carbon content;the fire performance test shows that the flame retardant performance of the three flame retardant polyesters is not much different,the limiting oxygen index is about 29.5%,and the UL-94 test results have reached the V-0 level.

关 键 词：阻燃聚酯 钛系催化剂 锑系催化剂 聚合 

分 类 号：TB34[一般工业技术—材料科学与工程]