PES与热致液晶高分子共混物的流变性能  

RHEOLOGY OF BLENDS OF PES WITH A LIQUID CRYSTALLINE POLYMER

作　　者：王霞瑜[1] 张文[1] 

机构地区：[1]湘潭大学化学系

出　　处：《高分子材料科学与工程》1994年第6期104-107,共4页Polymer Materials Science & Engineering

摘　　要：研究了ＰＥＳ与热致液晶聚合物（ＤＣＰ）ＨＢＡ／ＰＥＴ（６０／４０）共混物的转矩流变和剪切流变性能。加入２％～５％ＨＢＡ／ＰＥＴ（６０／４０）可使ＰＥＳ熔体在低剪切速率下的表观粘度下降２～４倍。共混物的粘流活化能也低于纯ＰＥＳ的活化能。加入少量ＬＣＰ（５％以下）可望大大改善ＰＥＳ的加工性能。Rheological studies of blends of polyethersulphone (PES) with a liquid crystalline polyrmer (LCP) HBA/PET(60/40)were carried out using a capillary rheometer and a HAAKE rheometer.In the shear rate range studied both the LCP and the PES and their blends exhibited non-Newtonian behavior. An approximately twofold-fourfold drop in apparrent viscosity at low shear rates for the addition of only 2%￣5% of LCP was found.The flow activation energies of the blends studied were also lower than that of PES.The processing temperature of PES may decrease 20￣30℃ by blending with a few percent of the LCP.

关 键 词：液晶聚合 共混 流变性 液晶高聚物 聚醚砜 

分 类 号：O631.21[理学—高分子化学]