改性三氧化二锑协效二乙基次磷酸铝阻燃PA6研究  

Study on Synergistic Effect of Modified Antimony Trioxide and Aluminum Diethylhypophosphite on Flame⁃retardant PA6

作　　者：柳妍 鲁哲宏 康兴隆 冯伟丽 刘保英[2] 李建通 丁涛[1,2] 徐元清[1,2] 房晓敏[1,2] LIU Yan;LU Zhehong;KANG Xinlong;FENG Weili;LIU Baoying;LI Jiantong;DING Tao;XU Yuanqing;FANG Xiaomin(College of Chemistry and Chemical Engineering,Henan University,Kaifeng 475004,China;Flame Retardant and Functional Materials Engineering Laboratory of Henan Province,Henan University,Kaifeng 475004,China)

机构地区：[1]河南大学化学化工学院,河南开封475004 [2]河南大学阻燃与功能材料河南省工程实验室,河南开封475004

出　　处：《中国塑料》2020年第11期29-35,共7页China Plastics

基　　金：国家自然科学基金项目(51403051);河南省科技发展计划项目(162102210023、162300410018)。

摘　　要：采用硅烷偶联剂(KH560)对三氧化二锑(Sb2O3)进行表面改性处理,并将其协效二乙基次磷酸铝(ADP)应用于聚酰胺6(PA6)阻燃研究。采用傅里叶变换红外光谱和热失重分析对改性Sb2O3进行表征,运用垂直燃烧、氧指数、锥形量热仪、热分析以及扫描电子显微镜和拉曼光谱等对阻燃PA6进行了阻燃性能及机理分析。结果表明,改性Sb2O3与Sb2O3相比,与ADP具有更好的协同阻燃效应,其作用机制主要是在气相发挥阻燃作用;当ADP含量为8%,改性Sb2O3含量为2%时,阻燃PA6复合材料的UL 94等级达到V-0级,极限氧指数达到33.8%。Antimony trioxide(Sb2O3)was modified with a silane coupling agent(KH560),and then the synergistic flame retarding effect of Sb2O3 and aluminum diethylphosphate(ADP)on polyamide 6(PA6)was investigated.The chemical structure and thermal performance of modified Sb2O3 was characterized by Fourier-transform infrared spectroscopy and thermogravimetric analysis(TG).The flame-retardant performance and relevant mechanism of PA6-based composites were analyzed by vertical burning test,limiting oxygen index,and cone calorimeter analysis,TGA,SEM and Raman spectroscopy.The results indicated that the modified Sb2O3 exhibited a better synergistic flame-retardant effect than pristine Sb2O3.The flame-retardant PA6 composites achieved a UL 94 V-0 classification and a LOI of 33.8 vol%at a modified Sb2O3 content of 2 wt%and a ADP content of 8 wt%.

关 键 词：聚酰胺6 二乙基次磷酸铝 三氧化二锑 协同作用 

分 类 号：TQ323.6[化学工程—合成树脂塑料工业]