长玻纤增强TPU/PBT阻燃复合材料的性能研究  

Properties of Long Glass Fiber Reinforced TPU/PBT Flame Retardant Composite

作　　者：张道海 谢锦辉[1] 谭芳 宝冬梅 尚晓煜[1] Zhang Daohai;Xie Jinhui;Tan Fang;Bao Dongmei;Shang Xiaoyu(School of Chemical Engineering,Guizhou Minzu University,Guiyang,Guizhou,550025;National Engineering Research Center for Compounding and Modification of Polymeric Materials,Guiyang,Guizhou,550014)

机构地区：[1]贵州民族大学化学工程学院,贵州贵阳550025 [2]国家复合改性聚合物材料工程技术研究中心,贵州贵阳550014

出　　处：《现代塑料加工应用》2022年第1期13-16,共4页Modern Plastics Processing and Applications

基　　金：国家自然科学基金项目(51863004);贵州省科学技术基金项目(黔科合基础[2020]1Y211);贵州省科技计划项目(黔科合基础[2017]1091,黔科合平台人才[2017]5623);贵州省2018年度高层次创新型人才培养—千层次人才项目;贵阳市专家工作站(ZJGZZ2021-07);贵阳市白云区科技计划项目(白科合同[2019]34号,白科合同[2020]28号,白科合同[2019]21号)。

摘　　要：利用9,10-二氢-9-氧杂-10-磷杂菲-10-氧化物(DOPO)作为阻燃剂,制备质量分数20%长玻璃纤维(LGF)增强热塑性聚氨酯/聚对苯二甲酸丁二醇酯/DOPO(20%LGF/TPU/PBT/DOPO)阻燃复合材料,研究了阻燃复合材料的阻燃性能、流变行为和力学性能。结果表明:随着DOPO用量增加,阻燃复合材料的阻燃性能逐渐提升,当DOPO质量分数为9%时,阻燃复合材料的阻燃等级为V-0,极限氧指数为24.5%。阻燃复合材料的阻燃机理以气相阻燃为主,凝聚相阻燃为辅。阻燃复合材料的力学性能随着DOPO用量增加而降低。Using 9,10-dihydro-9-oxa-10-phosphophenanthrene-10-oxide(DOPO)as flame retardant,20%mass fraction of long glass fiber(LGF)reinforced thermoplastic polyurethane/polybutylene terephthalate/DOPO(20%LGF/TPU/PBT/DOPO)flame retardant composites were prepared.The flame retardant properties,rheological behavior and mechanical properties of flame retardant composites were studied.The results show that with the increase of DOPO dosage,the flame retardant property of flame retardant composites is gradually improved.When the mass fraction of DOPO is 9%,the flame retardant grade of flame retardant composites is V-0,and the limit oxygen index is 24.5%.The flame retardant mechanism of flame retardant composites is mainly gas phase flame retardant supplemented by condensed phase flame retardant.The mechanical property of flame retardant composites decreases with the increase of DOPO dosage.

关 键 词：聚氨酯 聚对苯二甲酸丁二醇酯 长玻璃纤维 阻燃性能 流变行为 

分 类 号：TB332[一般工业技术—材料科学与工程]