Effects of environmental exposure on fiber/epoxy interfacial shear strength

Journal Article · Wed Aug 01 00:00:00 EDT 1990 · Polymer Composites; (USA)

DOI:https://doi.org/10.1002/pc.750110404· OSTI ID:6563793

Gaur, U; Miller, B ^[1]

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1. Textile Research Institute, Princeton, NJ (USA)

A microbond technique for direct determination of fiber/resin interfacial shear strength in composites (Miller et al., 1987) has been used to investigate the influence of environmental conditions on adhesive bonding in certain systems. The small dimensions involved in the method facilitate uniform exposure and short exposure times. Significant changes in both average shear strength and in shear strength distributions are observed on exposing aramid/epoxy and glass/epoxy microbond assemblies to steam or hot water. Shear strength drops to a plateau value in both cases, the reduction being more drastic with the glass fiber. Vacuum drying restores shear strength completely in aramid/epoxy microassemblies, even when the surface of the aramid fiber has been chemically modified, but there is only partial regeneration of bond strength with the glass/epoxy system. 15 refs.

• OSTI ID: 6563793
• Journal Information: Polymer Composites; (USA), Vol. 11; ISSN 0272-8397
• Country of Publication: United States
• Language: English

Related Subjects

36 MATERIALS SCIENCE
ARAMIDS
SHEAR PROPERTIES
COMPOSITE MATERIALS
EPOXIDES
GLASS
AGING
BONDING
ENVIRONMENT
FIBERS
INTERFACES
RESINS
STABILITY
STRESS ANALYSIS
FABRICATION
JOINING
MATERIALS
MECHANICAL PROPERTIES
ORGANIC COMPOUNDS
ORGANIC OXYGEN COMPOUNDS
ORGANIC POLYMERS
PETROCHEMICALS
PETROLEUM PRODUCTS
PLASTICS
POLYMERS
SYNTHETIC MATERIALS
360603* - Materials- Properties