Mechanical behavior of surface aminated polyaramid fabric/epoxy composites

Conference · Sun Jan 01 04:00:00 EST 1984

OSTI ID:5336274

Allred, R E

This study compares the mechanical behavior of aminated Kevlar 49 polyaramid fabric/DER 332-MPDA laminates with laminates fabricated with untreated polyaramid filaments. Interface-sensitive tests show that interface-dominated properties are increased by the amination. Peel resistance increases > 100% while +-45/sup 0/ tensile shear yield increased 30 to 40%. Examination of the transverse tensile fracture surfaces showed that the failure mode changed from an interface-dominated one to a mixture of filament splitting and matrix cracking in the aminated laminates. These results show that the mechanical properties of polyaramid/epoxy laminates may be improved by the formation of covalent bonds at the filament-matrix interface. It is expected that environmental resistance would also be improved.

• Research Organization: Sandia National Labs., Albuquerque, NM (USA)
• DOE Contract Number: AC04-76DP00789
• OSTI ID: 5336274
• Report Number(s): SAND-83-1686C; CONF-840459-5; ON: DE84006230
• Country of Publication: United States
• Language: English

Related Subjects

36 MATERIALS SCIENCE
360303* -- Composite Materials-- Mechanical Properties-- (-1987)
ADHESION
AMINATION
AMMONIA
ARAMIDS
CHEMICAL REACTIONS
COMPOSITE MATERIALS
EPOXIDES
FILAMENTS
HYDRIDES
HYDROGEN COMPOUNDS
INTERFACES
MATERIALS
MECHANICAL PROPERTIES
NITROGEN COMPOUNDS
NITROGEN HYDRIDES
ORGANIC COMPOUNDS
ORGANIC OXYGEN COMPOUNDS
PETROCHEMICALS
PETROLEUM PRODUCTS
PLASMA
PLASTICS
SHEAR
SURFACES
SYNTHETIC MATERIALS
TENSILE PROPERTIES
TEXTILES