The Effect of an Active Diluent on the Properties of Epoxy Resin and Unidirectional Carbon-Fiber-Reinforced Plastics

被引：0
|
作者：
V. I. Solodilov
Y. A. Gorbatkina
A. M. Kuperman
机构：
[1] Semenov Institute of Chemical Physics,
[2] Russian Academy of Sciences,undefined
来源：
Mechanics of Composite Materials | 2003年 / 39卷
关键词：
active diluent; modified epoxy matrix; unidirectional carbon-fiber-reinforced plastic; strength; concentration dependences;
D O I：
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中图分类号：
学科分类号：
摘要：
The influence of an active diluent on the properties of an epoxy matrix and carbon-fiber-reinforced plastics (CFRP) is investigated. The physicomechanical properties of an ED-20 epoxy resin modified with diglycidyl ether of diethylene glycol (DEG-1), the adhesion strength at the epoxy matrix–steel wire interface, and the mechanical properties of unidirectional CFRP are determined. The concentration of DEG-1 was varied from 0 to 50 wt.%. The properties of the matrix, the interface, and the composites are compared. It is stated that the matrix strength affects the strength of unidirectional CFRP in bending and not their strength in tension, compression, and shear. The latter fact seems somewhat unexpected. The interlaminar fracture toughness of the composites investigated correlates with the ultimate elongation of the binder. A comparison between the concentration dependences of adhesion strength and the strength of CFRP shows that the matrices utilized provide such a high interfacial strength that the strength of CFRP no longer depends on the adhesion of its constituents.
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页码：493 / 502
页数：9
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