Back to results
US 7,923,102 B2Granted
Method for making composite material with blend of thermoplastic particles
AssigneesHexcel Corporation, Hexcel Composites Limited
InventorsDavid Tilbrook, Dana Blair, Maureen Boyle, Paul Mackenzie
Life of this patent
Estimating the term…
Abstract
A method for making a pre-impregnated composite material (prepreg) is provided. The prepreg can be cured to form composite parts that have high levels of damage tolerance. The matrix resin includes a thermoplastic particle component that is a blend of particles that have a melting point above the curing temperature and particles that have a melting point at or below the curing temperature.
Claims20
A method for making a pre-impregnated composite material for curing at a curing temperature, said method comprising the steps of:
- A) providing a reinforcing fiber;
- and
- B) impregnating said reinforcing fiber with a matrix wherein said matrix comprises:
- a) a resin component comprising a difunctional epoxy resin, a trifunctional meta-glycidyl amine and a tetrafunctional para-glycidyl amine;
- b) a thermoplastic particle component comprising high melting thermoplastic particles that have a melting point above said curing temperature and low melting thermoplastic particles that have a melting point at or below said curing temperature;
- d) a thermoplastic toughening agent;
- and
- e) a curing agent wherein said curing temperature is between 140° C. and 200° C.
5 more elements
Dependencies are inferred from the claim text.