STUDY ON ROUGH-SURFACE BIAXIALLY ORIENTED POLYPROPYLENE FILM .1. FORMATION OF BETA-FORM CRYSTALS IN SHEET CAST WITH T-DIE EXTRUDER

被引：32

作者：

FUJIYAMA, M ^{[1
]}

KAWAMURA, Y ^{[1
]}

WAKINO, T ^{[1
]}

OKAMOTO, T ^{[1
]}

机构：

[1] TOKUYAMA SODA CO LTD,DIV ELECTR BUSINESS,PRINTED CIRCUIT PROD,FUJISAWA,KANAGAWA 252,JAPAN

来源：

JOURNAL OF APPLIED POLYMER SCIENCE | 1988年 / 36卷 / 05期

关键词：

CRYSTALS - Forming - PLASTICS MACHINERY - Extruders - PLASTICS SHEETS - Extrusion - POLYPROPYLENE - Extrusion;

D O I：

10.1002/app.1988.070360501

中图分类号：

O63 [高分子化学（高聚物）];

学科分类号：

070305 ; 080501 ; 081704 ;

摘要：

Sheets were cast by extruding polypropylenes (PP) which contained gamma -quinacridone, a beta -crystal nucleator, at levels of 0-10 ppm using a 30 mm phi extruder with a T-die at extrusion temperatures of 200-260 degree C and chill roll temperatures of 30-90 degree C. The influences of raw resin characteristics such as gamma -quinacridone content and MFI of the base PP and casting conditions such as extrusion temperature and chill roll temperature on the amount of beta -crystals formed in the sheet were studied. The amount of the beta -crystals formed was larger as the gamma -quinacridone content was higher and the extrusion temperature was lower and almost independent of the chill roll temperature.

引用

页码：985 / 993

页数：9

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