ISSN:
0021-8995
Keywords:
Chemistry
;
Polymer and Materials Science
Source:
Wiley InterScience Backfile Collection 1832-2000
Topics:
Chemistry and Pharmacology
,
Mechanical Engineering, Materials Science, Production Engineering, Mining and Metallurgy, Traffic Engineering, Precision Mechanics
,
Physics
Notes:
Wet filament winding processing for unidirectional composites uses specific reactive systems with low viscosity and long-pot life. This work describes improvement of toughness of an epoxy/anhydride matrix using, first, the increasing of the average molecular weight of the diepoxy prepolymer and, second, the introduction of a functionalized elastomer. Thermomechanical behaviors (glass transition temperature, elasticity, plastic, and fracture properties) are discussed in terms of (1) the increase of the average molecular weight between crosslinks in the first case and(2) the amount of elastomer dissolved in the matrix in the second case. Dynamic mechanical spectroscopy confirms that phase separation occurred, during curing, between the epoxy system and the elastomer. A good correlation is obtained between matrix toughness and fatigue behavior of unidirectional composites. © 1993 John Wiley & Sons, Inc.
Additional Material:
8 Ill.
Type of Medium:
Electronic Resource
URL:
http://dx.doi.org/10.1002/app.1993.070470605
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