Accession Number:

ADA064774

Title:

Environmental Exposure on Thermoplastic Adhesives.

Descriptive Note:

Final rept. 20 May 77-20 Apr 78,

Corporate Author:

BOEING AEROSPACE CO SEATTLE WA BOEING MILITARY AIRPLANE DEVELOPMENT ORGANIZATION

Personal Author(s):

Report Date:

1978-12-01

Pagination or Media Count:

82.0

Abstract:

Two thermoplastic polymers PKXA Polysulfone and R-5000 polyphenylsulfone having high temperature capabilities300 F were evaluated as adhesives for bonding steel and titanium adherends. The PKXA polysulfone adhesive was also evaluated on polyimideglass composites. Chromic acid anodize and sulfuric acid anodize were selected as the surface treatments for titanium and steel, respectfully. The primer system selected was BR-34 polyimide primer American Cyanimid subsequently coated with a thin solution of the bonding resin. Prior to bonding, the thermoplastic resins were solution coated on 112E glass with A-1100 finished for bondline control. The environmental resistance of the PKXA and R-5000 adhesives were evaluated after exposure to thermal environments 180, 300 F, deicing fluid, JP-4 fuel, hydraulic fluids MIL-H-83306, MIL-H-5606, synthetic lubricant MIL-L-7808, salt water, cleaning solvent Stoddard, Naphtha, corrosion inhibitor MIL-C-85054, Naphtha, and caustic NaOH solutions. Lap shear and crack extension specimens were used to evaluate the environmental resistance of the adhesive systems. Peel, creep and fatique properties were determined for the adhesives on steel and titanium adherends. Author

Subject Categories:

  • Adhesives, Seals and Binders
  • Ceramics, Refractories and Glass
  • Laminates and Composite Materials
  • Fabrication Metallurgy
  • Plastics

Distribution Statement:

APPROVED FOR PUBLIC RELEASE