PHBV/PBAT复合阻燃材料的燃烧性能、力学性能及流变性能研究  

Research on the Combustion Performance,Mechanical and Rheological Properties of PHBV/PBAT Flame Retardant Composites

作　　者：易爱 刘跃军[1] YI Ai;LIU Yuejun(Key Laboratory of New Materials and Technology for Packaging,Hunan University of Technology,Zhuzhou Hunan 412007,China)

机构地区：[1]湖南工业大学包装新材料与技术重点实验室,湖南株洲412007

出　　处：《湖南工业大学学报》2016年第6期61-68,共8页Journal of Hunan University of Technology

基　　金：国家自然科学基金资助项目(11372108);湖南省自然科学基金资助项目(14JJ5021)

摘　　要：采用熔融共混的方法,将MMT和聚磷酸铵基阻燃剂添加到PHBV/PBAT复合材料中,研究复合阻燃材料的力学性能、流变性能以及燃烧性能。极限氧指数和垂直燃烧结果表明,聚磷酸铵基阻燃剂的添加提高了复合材料的极限氧指数,MMT的加入使得极限氧指数进一步提高,当MMT的质量分数为1%时通过了UL-94垂直燃烧V-0级别测试。结合流变性能测试与力学性能测试表明,聚磷酸铵基阻燃剂恶化了复合材料的力学性能,而MMT提高了粉体在基体材料中的分散性能,提高了复合阻燃材料的力学性能。锥形量热测试表明,MMT的加入明显降低了复合材料的热释放速率以及产烟量。By adopting the method of melt blending,with an addition of MMT and ammonium-phosphate-based flame retardant to PHBV/PBAT composites,a research has been carried out on the combustion performance,mechanical and rheological properties of PHBV/PBAT composites.Results concerning the limiting oxygen index and vertical burning show that the ammonium-phosphate-based flame retardant helps to improve the limit oxygen index of the PHBV/PBAT composites,and the addition of MMT contributes to a further improvement of the limit oxygen index,followed by the V-0level of UL-94vertical combustion tested,with MMT1%of the content.Experimental results of the rheological and mechanical properties show that the ammonium-phosphate-based flame retardant deteriorates the mechanical properties of the composites,while MMT helps to improve the dispersion properties of the powder in matrix materials,as well as the mechanical properties of the flame retardant composites.The cone calorimeter test shows that an addition of montmorillonite significantly decreases the heat release rate and the amount of smoke production of the composites.

关 键 词：PHBV 燃烧性能 力学性能 流变性能 

分 类 号：TQ320.4[化学工程—合成树脂塑料工业]