PP/EHDPET共混体系熔体粘度对相转变的影响  

Effect of melt viscosity on phase transition in PP/EHDPET blends

作　　者：高曙光[1] 田慕川[1] 付中玉[1] 张大省[1] 

机构地区：[1]北京服装学院材料工程系,北京100029

出　　处：《合成纤维工业》2002年第2期8-11,共4页China Synthetic Fiber Industry

基　　金：国家自然科学基金资助 (5 9973 0 0 2 )

摘　　要：以聚丙烯 (PP) /易水解聚酯 (EH DPET)共混体系为研究对象 ,测试了共混组分在不同加工温度与不同剪切速率下的熔体粘度。结果表明 ,加工温度与剪切速率的改变均会导致 PP与 EHDPET熔体粘度比的变化 ,进而影响到两组分的海 -岛结构构成。选择较高的加工温度及较低的剪切速率 ,可以使共混物 PP在高组成比时成为分散相。The melt viscosities of different components of polypropylene/easy hydrolytic degradation polyester (PP/EHDPET) blend system were measured at different spinning temperatures and shearing rates. The results showed that the changes in spinning temperature and shearing rate both resulted in the changes in melt viscosity ratio of PP and EHDPET, thus affecting the 'sea\|island' structure. Higher spinning temperatures and lower shearing rate caused PP to form disperse phase at higher composition ratio.

关 键 词：PP/EHDPET 共混体系 熔体粘度 相转变 影响 聚丙烯 易水解聚酯 相形态 超细纤维 

分 类 号：TQ316.67[化学工程—高聚物工业]