THE EFFECT OF PRELOADING UNDER VARIOUS ENVIRONMENTAL CONDITIONS ON THE STRENGTH OF GLASS-FIBRE LAMINATED PLASTICS

Technical Report · Thu Nov 01 04:00:00 EST 1956

OSTI ID:4345764

Cornford, M M; Wright, W W

The flexural strength of glass-fiber laminated plastics was determined after preloading under conditions of elevated temperature, high humidity, or both. The strength depended on the types of resin and glass cloth, and on the treatment applied to the glass cloth. An epoxy resin was superior to the other resins tested. High alkali glass-cloth polyester laminates were less affected than were similar low alkali glass-cloth laminates, but the latter possessed greater flexural strength. The use of vinyl trichlorosilane treated cloth resulted in improved strength figures with polyester, epoxy and phenolic resins as compared with other treated cloths. It is recommended that when low alkali glass-cloth polyester laminates may be subjected to elevated temperature and humidity they should not be stressed beyond one-sixth of their ultimate strength. A combination of an epoxy resin with a low alkali glass cloth treated with vinyl trichlorosilane gave laminates having properties markedly superior to those of the other resin-glass cloth combinations tested. (auth)

• Research Organization: Gt. Brit. Royal Aircraft Establishment, Farnborough, Hants, England
• NSA Number: NSA-12-003646
• OSTI ID: 4345764
• Report Number(s): RAE-TN-CHEM-1291
• Country of Publication: Country unknown/Code not available
• Language: English

Related Subjects

ALKALI METALS
ELASTICITY
ENGINEERING
FIBERS
GLASS
HIGH TEMPERATURE
HUMIDITY
MATERIALS TESTING
MECHANICAL PROPERTIES
ORGANIC CHLORINE COMPOUNDS
PHENOLS
POLYESTERS
POLYMERS
RESINS
SILANES
STRESSES
VINYL RADICALS