Accession Number : ADB020803

Title :   Development of Thermoplastic Structural Adhesives

Descriptive Note : Final rept. 5 Nov 1975-1 Mar 1977

Corporate Author : BOEING AEROSPACE CO SEATTLE WA BOEING MILITARY AIRPLANE DEVELOPMENT

Personal Author(s) : Hill, S G ; Hoggatt, J T

PDF Url : ADB020803

Report Date : Mar 1977

Pagination or Media Count : 89

Abstract : Six different classes of thermoplastic polymers having high temperature capabilities (+300 deg F service) were surveyed after studying available data; five polymers from three different classes were screened for adhesive shear properties. The screening was conducted on two polysulfones, PKXA and P-1700; one polyethersulfone, 100P; and two polyimides, NR150A2 and 2080D. Screening test results indicated that all five polymers were good potential adhesives. Two polymers, PKXA and NR150A2, were selected for in-depth studies in surface preparation and environmental resistance. The environmental resistance of PKXA and NR150A2 adhesively bonded DCB and lap shear specimens were evaluated in thermal, salt water, humidity and fluid environments. Test results indicated that the PKXA DCB specimens were resistant to significant crack growth in all environments. The shear strength of PKXA specimens was not significantly reduced in thermal or room temperature JP-4 environments. NR150A2 DCB specimens were not significantly affected by humidity and MIL-H-5606 environments, but the lap shear specimens were significantly affected in thermal, JP-4 (RT and 160 deg F) and MIL-L-7808 environments.

Descriptors :   *ADHESIVES, *THERMOPLASTIC RESINS, ADHESIVE BONDING, AGING(MATERIALS), ALUMINUM, ANODIC COATINGS, CRACK PROPAGATION, CRACKING(FRACTURING), HUMIDITY, POLYETHERS, POLYIMIDE RESINS, POLYPHENYLENES, POLYSULFONES, PREPARATION, RESISTANCE, SALT WATER, SHEAR STRENGTH, STAINLESS STEEL, STRUCTURES, SUBSTRATES, SULFIDES, SULFONES, SURFACE PROPERTIES, THERMAL DEGRADATION, TITANIUM

Subject Categories : Organic Chemistry
      Adhesives, Seals and Binders

Distribution Statement : APPROVED FOR PUBLIC RELEASE