PRODUCTION AND PROPERTIES OF HIGHLY ORIENTED POLYPROPYLENE BY DIE DRAWING

被引：47

作者：

TARAIYA, AK

RICHARDSON, A

WARD, IM

机构：

[1] Univ of Leeds, Leeds, Engl, Univ of Leeds, Leeds, Engl

来源：

JOURNAL OF APPLIED POLYMER SCIENCE | 1987年 / 33卷 / 07期

关键词：

MATERIALS TESTING - Tensile Tests - PLASTICS - Mechanical Properties - PLASTICS PRODUCTS - Testing;

D O I：

10.1002/app.1987.070330723

中图分类号：

O63 [高分子化学（高聚物）];

学科分类号：

070305 ; 080501 ; 081704 ;

摘要：

A comprehensive examination of the die-drawing behavior of polypropylene has been carried out, examining the effects of draw temperature, haul-off speed, and initial billet size. A range of oriented products was obtained and characterized, primarily by the determination of Young's modulus at room temperature, the maximum modulus being 20 GPa for a draw ratio R//A of 23. 2. Using a large-scale machine, it was found possible to produce drawn products at speeds up to 2 m min** minus **1 at a draw temperature of 155 degree C and R//A of 19. 3. The dynamic mechanical behavior of several drawn materials was studied over the temperature range minus 80 to plus 80 degree C. It was of particular interest that the beta relaxation was found to be absent in samples of high draw ratio.

引用

页码：2559 / 2579

页数：21

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