EFFECTS OF INTERFACIAL CONDITIONS ON WALL SLIP AND SHARKSKIN MELT FRACTURE OF HDPE

被引：74

作者：

HATZIKIRIAKOS, SG ^{[1
]}

DEALY, JM ^{[1
]}

机构：

[1] MCGILL UNIV,DEPT CHEM ENGN,MONTREAL H3A 2T5,QUEBEC,CANADA

来源：

INTERNATIONAL POLYMER PROCESSING | 1993年 / 8卷 / 01期

关键词：

D O I：

10.3139/217.930036

中图分类号：

TQ [化学工业];

学科分类号：

0817 ;

摘要：

Experiments were performed in capillary and slit rheometers to determine the effects of the presence of fluoropolymers at the polymer-wall interface on wall slip and extrudate distortion of a molten high density polyethylene. Two fluoropolymers were used to modify the interface. It was found that one of these decreased slip compared to the clean interface while the other increased slip. However, both were found to improve extrudate appearance, thus indicating that both adhesion promoters and slip promoters may improve extrudate appearance. The mechanism underlying this rather surprising conclusion is also discussed.

引用

页码：36 / 44

页数：9

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