Composites Reinforced with Thermotropic Liquid Crystal Copolyester Fibers

reportActive / Technical Report | Accession Number: ADA211226 | Open PDF

Abstract:

Composites reinforced with thermotropic liquid crystal copolyester fibers Celanese Vectran have been studied with regard to fiber properties and fiber matrix adhesion. As-spun AS and heat-treated HT fibers have been characterized. Heat treatment increases the crystal-to-nematic melting point by 40 C and increases modulus 18 while doubling strength. Composites made with Vectran fibers HT should be processed at or below 275 C, because fiber properties are significantly reduced on processing above this temperature, which corresponds to the AS melting point. Keywords Composites Liquid crystal Copolyester Electron microscope Fiber surface treatment Polycarbonate.

Author(s):
Brady, Richard L. ; Porter, Roger S.
Author Organization(s):
MASSACHUSETTS UNIV AMHERST DEPT OF POLYMER SCIENCE AND ENGINEERING
Descriptive Note:
Technical rept.
Pagination:
0024

Security Markings

DOCUMENT & CONTEXTUAL SUMMARY

Distribution:
Approved For Public Release
Distribution Statement:
Approved For Public Release; Distribution Is Unlimited.

RECORD

Collection: TR
Identifying Numbers
Report Number(s):
TR-38
Contract/Grant Number(s):
N00014-88-K-0224
Monitor Series:
ONR
 Subject Terms
Joint Capability Areas:
JCA_1_Force Support
Communities of Interest:
No COI(s) Identified
Descriptor(s):
*LIQUID CRYSTALS, *FIBER REINFORCED COMPOSITES, *POLYESTER FIBERS, MODULUS OF ELASTICITY, COPOLYMERS, MATRIX MATERIALS, STRENGTH(MECHANICS), HEAT TREATMENT, REDUCTION, MELTING POINT, POLYCARBONATES, ADHESION, ELECTRON MICROSCOPES, PROCESSING, SURFACE FINISHING
Field(s)/Group(s):
Laminates and Composite Materials, Plastics
Keyword(s):
COPOLYESTER, THERMOTROPIC FIBERS
Report Date:
1989 Aug 01