WALL SLIP IN VISCOUS FLUIDS AND INFLUENCE OF MATERIALS OF CONSTRUCTION

被引：502

作者：

RAMAMURTHY, AV

机构：

[1] Union Carbide Corp, Bound Brook, NJ,, USA, Union Carbide Corp, Bound Brook, NJ, USA

来源：

JOURNAL OF RHEOLOGY | 1986年 / 30卷 / 02期

关键词：

EXTRUSION - Rheology - PLASTICS FILMS - Blow Molding - POLYMERS - Adhesion - RHEOMETERS - Applications;

D O I：

10.1122/1.549852

中图分类号：

O3 [力学];

学科分类号：

08 ; 0801 ;

摘要：

The question of slip and the influence of materials of construction on teh observed extrudate irregularities are examined for high viscosity molten polyethylenes. Capillary rheometer studies were conducted for several linear and branched polyethylenes. The results demonstrate that methods to improve adhesion, by proper choice of materials of construction for the die land region and/or use of adhesion promoters in the resin, virtually eliminate the rate-limiting effects of melt fracture in commercial blown film fabrication. The results highlight a deficiency of standard capillary rheometer methods to delineate the influence of materials of construction and/or adhesion promoters on observed melt fracture characteristics with molten polyethylenes.

引用

页码：337 / 357

页数：21