PPEKK/PPS共混物流变性能的研究  

Study on Rheological Behavior of PPEKK/PPS Blends

作　　者：廖功雄[1] 蹇锡高[1] 郭晓园[1] 

机构地区：[1]大连理工大学化工学院高分子材料系,辽宁大连116012

出　　处：《中国塑料》2001年第7期18-21,共4页China Plastics

基　　金：国家自然科学基金资助项目 (编号 :5 9473 90 1)

摘　　要：采用溶液共沉降的方式制备了不同比例的含二氮杂萘酮结构聚醚酮酮 (PPEKK)和聚苯硫醚 (PPS)共混物。用毛细管流变仪测定了PPEKK /PPS共混物的流变性能。结果发现在所研究的温度和剪切速率范围内 ,PPEKK/PPS共混物熔体为假塑性流体 ,其熔体表观粘度随PPS含量的增加 ,温度的升高 ,剪切速率的增大而下降 ,熔融活化能随剪切速率的增大而降低。对挤出样条的胀大比率、外观形貌研究表明 ,PPS的加入不仅有利于改善PPEKK的熔融加工性 ,还能改善成品尺寸稳定性和外观。Different PPEKK/PPS(polyether ether ketone ketone/polyphenylene sulfide) blends are prepared by solution co precipitation. Rheological behavior of PPEKK/PPS blends is tested by a capillary rheometer.Experimental results show that melts of PPEKK/PPS blends exhibit pseudoplastic, apparent viscosity decreases with the increase of PPS contents and temperature as well as shear rate,and melting activity of the blends decreases with the increase of shear rate within the range of the studying temperature and shear rate.Experimental results of swelling ratio and appearance of extrudate show that incorporation of PPS can improve not only the melt processability of PPEKK,size stability and appearance of the products.

关 键 词：聚醚酮酮 聚苯硫醚 流变性能 共混法 

分 类 号：O633[理学—高分子化学]