【摘要】 将笼状磷酸酯微胶囊(ET)与聚磷酸铵(APP)复配用于阻燃聚丙烯(PP)。采用氧指数和UL 94评价了阻燃PP的阻燃性能,采用热重分析、扫描电子显微镜照片、傅里叶变换红外光谱及X射线电子能谱研究了阻燃剂的协同效应和阻燃机理。结果表明:ET与APP有较好的复配协同效应,ET/APP的阻燃性能随m(ET)/m(APP)的不同而变化。当m(ET)/m(APP)为1∶2时,阻燃效果最好。w(ET/APP)为30%时,氧指数达29.7%,且达到UL 94 V-0级。更多还原

【Abstract】 A novel microcapsulated caged-phosphate(ET) was compounded with ammonium polyphosphate(APP) to flame retard polypropylene(PP).The flame retardancy of the flame retardant PP were evaluated by limiting oxygen index(LOI) and UL 94 test,and the synergistic effect and flame retardant mechanism were studied by thermogravimetric(TG) analysis,scanning electron microscopy(SEM),Fourier transmission infrared spectroscopy(FTIR) and X-ray photoelectron spectroscopy(XPS).The results indicate that there is good synergistic effect between ET and APP.Moreover,the flame retardancy of ET/APP varies with their mass ratio.And the optimal flame retardancy can be obtained when the mass ratio of ET to APP is 1:2.When the mass content of ET/APP is 30%,LOI of the flame retardant PP reaches 29.7%,and UL 94 V-0 rating can be achieved.更多还原