稀土填充乙丙共聚物流变行为研究  

RHEOLOGICAL BEHAVIORS OF RARE EARTH FILLED ETHYLENE PROPYLENE COPOLYMER

作　　者：张晓民[1] 尹志辉[1] 那天海[1] 杨毓华[1] 殷敬华[1] 

机构地区：[1]中国科学院长春应用化学研究所高分子物理联合开放实验室

出　　处：《高分子材料科学与工程》1997年第1期49-62,共14页Polymer Materials Science & Engineering

基　　金：国家自然科学基金

摘　　要：用椎板流变仪研究了稀土氧化钇填充乙丙共聚物的流变行为。共混物的熔体粘度显著低于空白乙丙共聚物，体系粘度随稀土含量的变化而变化。Ethylene propylene copolymer (EPM) and rare earth (Y 2O 3) were mixed mechanically by brabender Single Screw extruder. Sample melt viscosities were measured with a Cone plate viscometer. Viscosities of Y 2O 3 filled EPM are significantly lower than that of plain EPM, flow activation energy for different Y 2O 3 content are almost identical. Newtonian Index ( n ) for Y 2O 3 filled EPM increases with increasing of Y 2O 3 content, it show that non Newtonanism decreases after yittrium oxide (Y 2O 3) was filled. The viscosity of the blend changes with yittrum oxide composition. The curve of viscosity vs. time showed that the samples has good melt flow and stability for extrusion molding.

关 键 词：氧化钇 乙丙共聚物 填充 流变性 共聚物 

分 类 号：O631.21[理学—高分子化学]