LOW COST NON-AUTOCLAVE PROCESSING OF ULTRAHIGH-MODULUS CARBON FIBER THERMOPLASTIC COMPOSITES

Award Information
Agency:
Department of Defense
Branch
Army
Amount:
$50,532.00
Award Year:
1991
Program:
SBIR
Phase:
Phase I
Contract:
n/a
Award Id:
16001
Agency Tracking Number:
16001
Solicitation Year:
n/a
Solicitation Topic Code:
n/a
Solicitation Number:
n/a
Small Business Information
516 Sw Kaw, Bartlesville, OK, 74003
Hubzone Owned:
N
Minority Owned:
N
Woman Owned:
N
Duns:
n/a
Principal Investigator:
Dr Scott R Taylor
Principal Investigator
() -
Business Contact:
() -
Research Institute:
n/a
Abstract
VERY RECENTLY, THERMOPLASTIC PULTRUSIONS, INC., HAS DEVELOPED THE CAPABILITY TO PULTRUDE ULTRA HIGH-MODULUS GRAPHITE FIBER/POWDERED THERMOPLASTIC RESIN PREPREGS INTO HIGH QUALITY COMPOSITES WITHOUT DAMAGING THE FIBERS. SINCE THE PULTRUDED COMPOSITES ARE ALREADY CONSOLIDATED, REFORMING DOES NOT REQUIRE THE HIGH PRESSURES AND LONG DURATIONS TYPICAL OF AUTOCLAVE FABRICATION. HENCE, IT SHOULD BE POSSIBLE TO LAYUP A COMPONENT FROM PULTRUDED STOCK MATERIALS ONTO A MANDREL WHICH WOULD FIT INSIDE ANOTHER METAL SHELL. THE KEY WILL BE TO MAKE THE INNER AND OUTER MANDRELS OUT OF MATERIALS HAVING DIFFERENT COEFFICIENTS OF THERMAL EXPANSION. BY HAVING AN INNER MANDREL THAT CAN EXPAND MORE THAN THE EXTERNAL SHELL, VIRTUALLY ANY PRESSURE COULD BE EXERTED ON THE COMPOSITE SANDWICHED IN BETWEEN IN AN INEXPENSIVE OVEN. THE GOAL OF THE PROPOSED PROJECT WILL BE TO UTILIZE THE UNIQUE REFORMING PROPERTIES OF THERMOPLASTIC COMPOSITES TO ALLOW SIMPLE FABRICATION OF HIGH-MODULUS HIGH-STRENGTH TUBULAR COMPOSITE COMPONENTS VIA THIS NOVEL DIFFERENTIAL THERMAL EXPANSION (DTE) PROCESS.

* information listed above is at the time of submission.

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