武汉工程大学学报2012，Vol.34Issue(10)：54-57,4.DOI:10.3969/j.issn.1674-2869.2012.10.013
超支化聚酯与聚丙烯共混物的结晶及力学性能
Mechanical properties and crystallization of polypropylene and hyperbranched polyester blends
摘要
Abstract
Blends composed of AB2 type hyperbranched polyester (HBP) and polypropylene (PP) were prepared by melt blending method. Effects of amounts of HBP on crystallinity and crystallization rate of blends were investigated by differential scanning calorimetry (DSC). Fracture surface of the blends was observed by scanning electron microscopy (SEM). The influence of the content of HBP on the mechanical properties of the blends was studied. The results show that HBP acts as a nucleating agent for PP during crystallization; The crystallization rate and the crystallinity of PP are increased with hyperbranched polyester added. When the content of hyperbranched polyester is 10% ? The crystallinity is 32. 15% and increases by 32. 63%. The tensile strength is improved with low amounts of HBP. When the content of hyperbranched polyester is 2% , the tensile strength reaches a maximum 36. 2 Mpa and increases by 7. 10%. The maximum impact strength of PP is 5. 80 kJ/m2 and increases by about 12. 60% when the content of hyperbranched polyester is 10%.关键词
结晶度/增韧/冲击强度Key words
crystallinity/ toughening/ impact strength分类
化学化工引用本文复制引用
樊庆春,段菲红,郭怀兵,吴田..超支化聚酯与聚丙烯共混物的结晶及力学性能[J].武汉工程大学学报,2012,34(10):54-57,4.基金项目
武汉工程大学青年基金(Q200902) （Q200902）
