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US 4,661,559 AGranted
Impact resistant matrix resins for advanced composites
AssigneeUnion Carbide Corporation
InventorsHugh C. Gardner, Michael J. Michno, Jr., George L. Brode, Robert J. Cotter
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Abstract
Described herein is a composition which contains a specific group of hardeners, an epoxy resin and a thermoplastic polymer. When combined with a structural fiber the composition produces composites which have improved impact resistance, improved tensile properties and high compressive properties.
Claims35
A composition comprising:
- (a) from about 5 to about 60 weight percent of a diamine hardener represented by the following general formula:
- ##STR12## wherein the X's are independently selected from a direct bond, O, S, SO.sub.2, CO, COO, C(CF.sub.3).sub.2, C(R.sub.1 R.sub.2).sub.2 wherein R.sub.1 and R.sub.2 are independently hydrogen or alkyl of 1 to 4 carbon atoms,
- (b) from about 10 to about 80 weight percent of an epoxy resin containing two or more 1,2-epoxy groups per molecule, and
- (c) from 1 to about 25 weight percent of a thermoplastic polymer.
1 more element
A composition comprising:
- (a) from about 5 to about 60 weight percent of a diamine hardener represented by the following general formula:
- ##STR24## wherein the X's are independently selected from a direct bond, O, S, SO.sub.2, CO, COO, C(CF.sub.3).sub.2, C(R.sub.1 R.sub.2).sub.2 wherein R.sub.1 and R.sub.2 are independently hydrogen or alkyl of 1 to 4 carbon atoms,
- (b) from about 10 to about 80 weight percent bis(2,3-epoxycyclopentyl)ether, and
- (c) from 1 to about 25 weight percent of a thermoplastic polymer.
1 more element
Dependencies are inferred from the claim text.