RIGID-ROD NETWORKS - LIQUID-CRYSTALLINE EPOXY-RESINS

被引：50

作者：

CARFAGNA, C

AMENDOLA, E

GIAMBERINI, M

机构：

[1] Department of Materials and Production Engineering, University of Naples 'Federico II' Piazzale Tecchio 80

来源：

COMPOSITE STRUCTURES | 1994年 / 27卷 / 1-2期

关键词：

Curing - Fracture - Liquid crystals - Molecular structure - Monomers - Rheology - Strength of materials - Thermal effects - Thermosets;

D O I：

10.1016/0263-8223(94)90064-7

中图分类号：

O3 [力学];

学科分类号：

08 ; 0801 ;

摘要：

Liquid crystalline polymers are well known for their unique mechanical and theological properties. In recent years, some interest has been devoted to the study of a new class of liquid crystalline thermoset based on epoxy resins. Liquid crystalline epoxy resins can be obtained either by curing glycidyl terminated prepolymers over a range of temperature in which the mesophase is stable, or by reacting epoxy functionalized rigid monomers with a suitable curing agent. In our work this second approach has been followed. An unusual behaviour has been found for the form of the exotherm during increased curing temperature. Fracture toughness K-q, was found to decrease with increased curing temperature. This experimental evidence has been correlated with the reduction of the extent of liquid crystalline character with temperature.

引用

页码：37 / 43

页数：7

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SINGH, B ;

BHUSHAN, B ;

BHARGAVA, PM ;

KACKER, IK ;

RAMACHANDRAN, K ;

SASTRI, VDN ;

RAO, NS .

JOURNAL OF THE CHEMICAL SOCIETY, 1954, (OCT) :3360-3362

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