摘要
用差示扫描量热法(DSC)和偏光显微镜研究了聚丙烯(PP)/无机填料复合体系的非等温结晶过程以及填料含量、尺寸、形状、偶联处理对PP结晶行为的影响。结果表明:玻璃微珠的含量增加引起结晶度降低,但不会影响球晶尺寸;小尺寸的玻璃微珠能使球晶尺寸更均匀;对玻璃微珠进行偶联处理能提高材料的结晶度;同时发现,纳米碳酸钙引发了聚丙烯由α晶型向β晶型的转变。
Nonisothermal crystallization behavior of polypropylene （PP）linorganic fillers composites and the effects of content, size, form and surface treatment of fillers on the crystallization property of PP were studied by DSC and POM. The results show： the increase of glass bead （GB） content decreases the crystallinity of the composite, but it has no effect on the crystal size; the smaller GB makes the crystal size more uniform; coupling treatment for GB increases the crystallinity of the composite; meanwhile, Nano-CaCO3 makes PP change from α-crystal to β -crystal.
出处
《塑料科技》
CAS
北大核心
2008年第3期46-50,共5页
Plastics Science and Technology
基金
教育部科学技术研究重点项目资助(106133)
国家基础研究专项经费(973项目)资助(2005CB623800)
关键词
聚丙烯
填料
结晶
Polypropylene
Filler
Crystallization
