PHOTODEGRADATION OF POLYIMIDES .2. THERMAL-PROPERTY CHANGES OF POLYIMIDES BASED ON A HEXAFLUORINATED DIANHYDRIDE

被引：16

作者：

HOYLE, CE

ANZURES, ET

机构：

[1] Department of Polymer Science, University of Southern Mississippi, Hattiesburg, Mississippi

来源：

JOURNAL OF APPLIED POLYMER SCIENCE | 1991年 / 43卷 / 01期

关键词：

Chemical Reactions--Photolysis - Polymers--Degradation - Ultraviolet Radiation;

D O I：

10.1002/app.1991.070430102

中图分类号：

O63 [高分子化学（高聚物）];

学科分类号：

070305 ; 080501 ; 081704 ;

摘要：

Polyimides based on a hexafluorinated dianhydride decrease in thermal and thermal-oxidative stability upon photolysis with an unfiltered medium pressure mercury lamp source in air. Additionally, the glass transition of photolyzed polyimides containing the hexafluorinated moiety is lowered with increasing photolysis time. By contrast, pyromellitic-dianhydride-based polymers are relatively thermally stable even after prolonged photolysis under similar conditions.

引用

页码：11 / 18

页数：8

共 10 条

[1] ULTRAVIOLET STABILITY OF POLYIMIDES AND POLYAMIDE-IMIDES [J].