苯并噁嗪协效二乙基次磷酸铝阻燃PA66研究.docx

NE.Cms_InsertNE.Cms_InsertNE.Cms_Insert苯并噁嗪协效二乙基次磷酸铝阻燃PA66的研究 鲁哲宏1，冯伟丽1，康兴隆1，刘保英2，房晓敏*1,2，丁涛1,2 （1.河南大学化学化工学院功能有机分子工程研究所，河南开封 475004；2.阻燃与功能材料河南省工程实验室，河南开封 475004） 摘要:以双酚A型苯并噁嗪（BOZ）作为成炭协效剂，与二乙基次磷酸铝（ADP）复配,通过熔融共混制备了阻燃尼龙66（PA66）复合材料。通过垂直燃烧测试（UL94）、极限氧指数（LOI）、锥形量热（Cone）、SEM以及TGA等考察了复合材料的协同阻燃性能及作用机制。结果表明：BOZ和ADP具有良好的协同阻燃效应。适量BOZ的引入不但可以提高材料的阻燃性能，还可以改善材料的热稳定性，并且对材料的力学性能影响不大。添加0.3%的BOZ（质量百分数，下同）和7.7%的ADP时，ADP/BOZ阻燃PA66复合材料的垂直燃烧达到UL94 V-0级，LOI达到了32.8%，拉伸强度、弯曲强度分别为81.52、111.11MPa。阻燃机理研究表明：ADP/BOZ和ADP都是以气相阻燃作用为主的气相和凝聚相协同阻燃机制。 关键词：PA66；二乙基次磷酸铝；苯并噁嗪；阻燃；协效 中图分类号：TQ323.6文献标志码：A文章编号：1003-5214（2018）00-0000-00 Research?of?Flame?Retardant?PA66?Composites?with?Benzoxazine?and?Diethyl-Phosphate?Aluminum? LU Zhe-hong1，FENG Wei-li1，KANG Xing-long1，LIU Bao-ying2，FANG Xiao-min1,2*，DING Tao1,2 （1 Institute of Functional Organic Molecular Engineering, College of Chemistry and Chemical Engineering, Henan University，Kaifeng 475004；2 Henan Engineering Laboratory of Flame-Retardant and Functional Materials, Henan University, Kaifeng 475004, P. R. China） Abstract: Flame-retardant PA66 composites were prepared by melt blending with bisphenol Abenzoxazine (BOZ) as a carbon synergist and diethyl-phosphate aluminum (ADP). Their synergistic flame retardant effects and mechanism were investigated by means of UL94 vertical burning rating, limiting oxygen index(LOI), cone calorimeter test（Cone）,SEM and TGA.The results showed that BOZ and ADP had good synergistic flame retardancy in PA66. Introducing proper amount of BOZ can not only improve the flame retardancy of the PA66 composites, but also significantly enhance the thermal stability especially the initial decomposition temperature. Moreover the mechanical properties of the composites are not much worse. When 0.3%BOZ and 7.7%ADP were added(based on the total mass), the ADP/BOZ/PA66 composites reached UL94 V-0, LOI arrived to 32.8%, and their tensile strength and bending strength were 81.52MPa and 111.11MPa respectively. The study of flame retardant me