振动力场对PP/PS共混物流变特性的影响  

Effect of Vibration Force Field on Rheological Properties of PP/PS Blend

作　　者：周磊[1] 刘跃军[1] 黄宇刚[1] 李祥刚[1] 

机构地区：[1]湖南工业大学包装新材料与技术重点实验室,湖南株洲412008

出　　处：《塑料科技》2010年第1期35-38,共4页Plastics Science and Technology

基　　金：国家自然科学基金资助项目(10672197);湖南省自然科学杰出青年基金资助项目(07JJ1001)

摘　　要：利用自制的聚合物流变测试装置,研究了不同配比的聚丙烯(PP)/聚苯乙烯(PS)共混物在振动力场作用下的流变特性。结果表明:与稳态相比,振动力场的引入明显降低了共混物的表观黏度和挤出胀大比;随着PP含量的增加,共混物的表观黏度在PP/PS=40/60时出现极小值,而挤出胀大比逐渐降低。在PP/PS=60/40时,当振幅为0.5mm,随着频率的增加,共混物的表观黏度呈现无规律的波动状态;当频率为20Hz时,随着振幅的增加,共混物的表观黏度逐渐降低。The rheological properties of PP/PS blend under vibration force field were studied by self-made polymer rheometer.The results show that：the introduction of vibration force field decreases the apparent viscosity and die swell ratio of the blend obviously;with the increase of PP content,the minimum value of the apparent viscosity of the blend appears when the blend ratio is PP/PS=40/60,while the die swell ratio decreases gradually.When the blend ratio is PP/PS=60/40 and amplitude is 0.5 mm,the apparent viscosity of the blend is in fluctuation state with the increase of the frequency;when the blend ratio is PP/PS=60/40 and frequency is 20 Hz,the apparent viscosity of the blend decreases gradually with the increase of the amplitude.

关 键 词：振动力场 聚丙烯 聚苯乙烯 共混 流变特性 

分 类 号：TQ325.14[化学工程—合成树脂塑料工业] TQ325.2