CHEMICAL STRUCTURES AND PROPERTIES OF LOW THERMAL-EXPANSION COEFFICIENT POLYIMIDES

被引：76

作者：

NUMATA, S ^{[1
]}

KINJO, N ^{[1
]}

MAKINO, D ^{[1
]}

机构：

[1] HITACHI CHEM CO LTD,YAMAZAKI WORKS,HITACHI,IBARAKI 317,JAPAN

来源：

POLYMER ENGINEERING AND SCIENCE | 1988年 / 28卷 / 14期

关键词：

AROMATIC POLYMERS - Thermal Expansion - COATINGS - Stresses;

D O I：

10.1002/pen.760281405

中图分类号：

TQ [化学工业];

学科分类号：

0817 ;

摘要：

The relationships between chemical structures of various aromatic polyimides and their thermal expansion coefficients, were investigated and the properties of low thermal expansion polyimides were elucidated. Such low values were observed for polyimides obtained from pyromellitic dianhydride or 3,3 prime ,4,4 prime -biphenyltetracarboxylic dianhydride and aromatic diamines, which included only benzene or pyridine rings fused at para-positions without a flexible linkage. It was proposed that these low thermal expansion coefficients were related to the linearity of their polymer molecular skeletons. In particular, PIQ-L100 (Hitachi Chemical Co. Ltd) is one such low thermal expansion polyimide and it has excellent mechanical properties, thermal stability, and low absorbed moisture content.

引用

页码：906 / 911

页数：6