DIELECTRIC AND VISCOELASTIC PROPERTIES OF SOME META-TETRAMETHYL XYLENE DIISOCYANATE-BASED POLYURETHANES AS A FUNCTION OF SAMPLE COMPOSITION

被引：1

作者：

CAPPS, RN ^{[1
]}

STACK, GM ^{[1
]}

SAMUELS, MQ ^{[1
]}

BEUMEL, LL ^{[1
]}

机构：

[1] TRI,TESSCO,ORLANDO,FL 32806

来源：

JOURNAL OF APPLIED POLYMER SCIENCE | 1992年 / 45卷 / 07期

关键词：

D O I：

10.1002/app.1992.070450706

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 series of linear segmented polyurethanes were synthesized, based on soft segments of polycaprolactone having an average number molecular weight of 2100, or hydroxy-terminated polybutadiene having an approximate molecular weight of 2800. Hard segments were made of meta-tetramethyl xylene diisocyanate and diethyl toluene diamine. The dynamic Young's modulus and loss tangent, relative permittivity, and dielectric loss, were found to be significantly affected by soft segment polarity and hard segment content. These results are discussed in terms of polymer morphology, such as degree of phase separation and soft segment phase state.

引用

页码：1175 / 1188

页数：14

共 46 条

[1] STRUCTURE PROPERTY STUDIES OF POLYESTER-BASED AND POLYETHER-BASED MDI-BD SEGMENTED POLYURETHANES - EFFECT OF ONE-STAGE VS 2-STAGE POLYMERIZATION CONDITIONS [J].