PEG及其复合加工助剂对UHMWPE/PP共混物流变性能的影响  

EFFECT OF PEG AND PEG-CONTAINING AIDS ON UHMWPE/PP BLEND

作　　者：谢美菊[1] 刘小龙[1] 刘功德[1] 李惠林[1] 

机构地区：[1]高分子材料工程国家重点实验室四川大学高分子研究所,四川成都610065

出　　处：《高分子材料科学与工程》2005年第1期210-213,共4页Polymer Materials Science & Engineering

基　　金：国家重点基础研究专项经费资助项目(G1999064809);国家自然科学基金重点项目(50233010)和教育部博士点基金(20030610057)

摘　　要：用高压毛细管流变仪研究了PEG、PEG与硅藻土和玻璃微珠的复合物对UHMWPE/PP(80/20)共混物加工流变性的影响,结果表明,少量PEG及其复合加工助剂均能显著降低UHMWPE/PP的熔体表观粘度,改善挤出物的外观质量。PEG与玻璃微珠对UHMWPE/PP熔体有协同降粘作用。Polyethylene glycol (PEG), PEG/diatomite hybrid(PPA1) and PEG/glass bead hybrid(PPA2) were used as processing aids to improve the rheological properties of ultrahigh molecular weight polyethylene /polypropylene UHMWPE/PP(80/20) blend in this study. The results show that the apparent viscosity of UHMWPE/PP(80/20) reduce effectively with small amout of PEG or PPA1 or PPA2 added to. A synergetic effect on viscosity reduction is obtained when PEG and glass bead are used together while a minor adverse effect with the combination of PEG and diatomite. By the addition of PEG or PEG-containing aids the appearance of UHMWPE/PP(80/20) extrudates can also be improved.

关 键 词：超高分子量聚乙烯 聚丙烯 聚乙二醇 加工助剂 流变 

分 类 号：O631.21[理学—高分子化学]