聚磷酸酯阻燃剂对PET结晶行为及形态结构的影响  

Effect of Polyphosphoester Flame Retardant on Crystallization Behavior and Morphology of PET

作　　者：黄山 刘炳艳[1] 田秀娟[1] 赵丽芬[1] HUANG Shan;LIU Bingyan;TIAN Xiujuan;ZHAO Lifen(College of Materials Science and Engineering,Shandong University of Science andTechnology,Qingdao,Shandong 266590,China)

机构地区：[1]山东科技大学材料科学与工程学院,山东青岛266590

出　　处：《山东科技大学学报（自然科学版）》2018年第5期45-51,共7页Journal of Shandong University of Science and Technology(Natural Science)

基　　金：国家自然科学基金项目(51503117)

摘　　要：采用共混法制备了不同磷含量的阻燃聚对苯二甲酸乙二醇酯(poly(ethylene terephthalate),PET)样品,差示扫描量热(differential scanning calorimetry,DSC)和Avrami方法研究了该阻燃体系的等温结晶动力学。原子力显微镜(atomic force microscope,AFM)、偏光显微镜(polarized optical microscopy,POM)和X射线衍射仪(Xray diffraction,XRD)分析了共混体系的晶体形貌、尺寸和结构。结果表明:阻燃剂的加入没有改变PET的成核机理,其初级结晶均为二维盘状和三维球晶生长;少量阻燃剂的加入可以在PET中起到异相成核作用,晶粒尺寸减小,结晶速率加快。Flame retardant poly（ethylene terephthalate）（PET） with different phosphorus contents were prepared by melt blending. The isothermal crystallization kinetics of the flame retardant systems was first studied by using differential scanning calorimetry （DSC） and Avrami method. Then polarizing microscope （POM）, atomic force microscope （AFM） and X-ray diffraction （XRD） were adopted to analyze the crystal morphologies, size and structure of the blending systems. The results show that the addition of flame retardant has not changed the nucleation mechanism of PET, whose primary crystallization is two-dimensional disk and three-dimensional spherulite growth and that the addition of small amounts of flame retardant has the effect of heterogeneous nucleation on PET and its main performance is to reduce the grain size and accelerate the crystallization rate.

关 键 词：聚对苯二曱酸乙二醇酯 聚磷酸酯阻燃剂 结晶动力学 Avami方法 

分 类 号：TQ323[化学工程—合成树脂塑料工业]