PP/空心玻璃微珠复合材料非等温结晶研究

摘要

采用熔融共混挤出的方法,制备了聚丙烯(PP)/空心玻璃微珠(HGB)复合材料,用差示扫描量热法研究了PP和PP/HGB复合材料的非等温结晶过程,并通过Jeziorny和莫志深方程研究了非等温结晶动力学.结果表明,随降温速率的增大,PP和PP/HGB复合材料的结晶峰温和结晶度降低,结晶速率增大；HGB的加入降低了PP的结晶速率.%The polypropylene/hollow glass beads (PP/HGB) composites were prepared by a melt-extrusion method, and the non-isothermal crystallization behavior of pure PP and PP/ HGB composites was characterized via a differential scanning calorimetry (DSC). The non-isothermal crystallization kinetics of the samples were discussed by Jeziorny and Mo equations, respectively. The results show that with increasing of the cooling rate, the crystallization temperature and crystallinity of PP and PP/HGB composites decrease, while the crystallization rate increases. However, HGB reduces the crystallization rate of PP.