MELT STRENGTH BEHAVIOR OF POLYETHYLENE BLENDS

被引：42

作者：

GHIJSELS, A ^{[1
]}

ENTE, JJSM ^{[1
]}

机构：

[1] KONINKLIJKE SHELL EXPTL PROD LAB, AMSTERDAM, NETHERLANDS

来源：

INTERNATIONAL POLYMER PROCESSING | 1992年 / 7卷 / 01期

关键词：

D O I：

10.3139/217.920044

中图分类号：

TQ [化学工业];

学科分类号：

0817 ;

摘要：

Melt strength data are presented on different types of binary polyethylene blends as linear low density polyethylene/low density polyethylene (LLDPE/LDPE), linear low density polyethylene/high density polyethylene (LLDPE/HDPE) and LDPE/LDPE. Melt strength was assessed from uniaxial tensile experiments with a Rheotens apparatus. In addition, the blends were characterised in terms of a few other rheological properties such as the zero-shear viscosity and the extrudate swell in capillary extrusion. For the LLDPE/LDPE blend pairs synergistic effects were observed for the melt strength and some other properties. No melt strength synergism was observed for the LLDPE/HDPE and the LDPE/LDPE blends. The results are discussed in terms of the Bersted model on the effects of long chain branching on the low-shear melt viscosity of polyethylenes.

引用

页码：44 / 50

页数：7

共 24 条

[1] FLOW PROPERTIES OF LOW-DENSITY LINEAR LOW-DENSITY POLYETHYLENES [J].

ACIERNO, D ;

CURTO, D ;

LAMANTIA, FP ;

VALENZA, A .

POLYMER ENGINEERING AND SCIENCE, 1986, 26 (01) :28-33

[2] MOLECULAR-WEIGHT DEPENDENCY OF RHEOLOGICAL CHARACTERISTICS OF LINEAR LOW-DENSITY POLYETHYLENE [J].

ACIERNO, D ;

BRANCACCIO, A ;

CURTO, D ;

LAMANTIA, FP ;

VALENZA, A .

JOURNAL OF RHEOLOGY, 1985, 29 (03) :323-334

[3]

BADR MK, 1985, SPE ANTEC TECHN PAPE, V31, P918

[4] ON THE EFFECTS OF VERY LOW-LEVELS OF LONG-CHAIN BRANCHING ON RHEOLOGICAL BEHAVIOR IN POLYETHYLENE [J].

BERSTED, BH .

JOURNAL OF APPLIED POLYMER SCIENCE, 1985, 30 (09) :3751-3765

[5] PREDICTION OF RHEOLOGICAL BEHAVIOR OF BRANCHED POLYETHYLENE FROM MOLECULAR-STRUCTURE [J].

BERSTED, BH ;

SLEE, JD ;

RICHTER, CA .

JOURNAL OF APPLIED POLYMER SCIENCE, 1981, 26 (03) :1001-1014

[6] CONVERGING FLOW OF POLYMER MELTS [J].

HUANG, DC ;

SHROFF, RN .

JOURNAL OF RHEOLOGY, 1981, 25 (06) :605-617

[7]

Cogswell FN., 1981, POLYM MELT RHEOLOGY

[8] LINEAR-LOW-DENSITY POLYETHYLENE MELT RHEOLOGY - EXTENSIBILITY AND EXTRUSION DEFECTS [J].

CONSTANTIN, D .

POLYMER ENGINEERING AND SCIENCE, 1984, 24 (04) :268-274

[9] THE RHEOLOGICAL BEHAVIOR OF HDPE LDPE BLENDS .1. END EFFECTS AND SHEAR VISCOSITY [J].

CURTO, D ;

LAMANTIA, FP ;

ACIERNO, D .

RHEOLOGICA ACTA, 1983, 22 (02) :197-208

[10]

DATTA NK, 1983, PLAST RUB PROC APPL, V3, P237

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