摘要
分别采用双螺杆挤出法和转矩流变仪密炼法制备了PET/PTT共混聚酯,通过拉伸试验、冲击试验和DSC分析,研究了PET/PTT共混聚酯共混配比与力学性能的关系以及不同成核剂和不同结晶促进剂对PET/PTT共混聚酯结晶性能的影响。结果表明,当PET/PTT共混配比为75/25(质量比)时,PET/PTT共混聚酯能同时提高刚性和韧性,纳米SiO2成核剂可明显提高PET/PTT共混聚酯的结晶能力,聚醚1000结晶促进剂可显著提高PET/PTT/纳米SiO2共混聚酯的结晶速率。
PET/PTT blends were respectively prepared by using twin strew extruder and HAPRO rheomixer for the study of the relationship between the mechanical properties and blending ratio of the blends by means of tensile and impact tests, along with DSC analysis. Meanwhile, a detailed study was designed to find out the effects of different nucleators and nucleating promoter on the crystalline behavior of the blends. It was found the stiffness and toughness of the blends could be improved simultaneously when the blending ratio was 75/25 （PET/PTT, by mass fraction）. Moreover, when used as nucleators, nano-meter SiO2 could successfully increase the crystallizability of the blend, and polyether-1000 could obviously accelerate the crystallization rate of the blend.
出处
《塑料工业》
CAS
CSCD
北大核心
2006年第11期50-53,共4页
China Plastics Industry
