PP／CaCO3／PP—g—AA复合材料形态与性能研究

摘要

Acrylic acid grafted polypropylene（PP-g-AA） was prepared via melt grafting using a two screw extruder equipped with a liquid feeding, which was used as a compstibilizer in PP/CaCO3 system. The resulted system was studied using Fourier transform infrared spectroscopy（FTIR）, differential scanning calorimetery（DSC）, and scanning electron microscope（SEM）. When content of CaCO3 was 10 % and content of PP-g-AA（grafting ratio 2. 204%） was 10 %, a set of optimal mechanical properties was obtained.%采用双螺杆挤出机液体进料熔融接枝制备了丙烯酸接枝聚丙烯（PP-g-AA），研究了聚丙烯（PP）／碳酸钙（CaCO3）／PP-g-AA复合材料的力学性能，并采用红外光谱、差示扫描量热仪、扫描电子显微镜等对复合材料进行了表征分析。结果表明，用此PP-g-AA作为PP／CaCO3的相容剂时，能有效提高其力学性能，且当CaCO3的含量为10％（质量分数，下同），接枝率为2．204％的PP-g-AA的含量为10％时，效果最佳。