Improving adhesion between a segmented poly(ether-urethane) and a fluorocarbon copolymer coating
A moisture barrier coating of Kel-F 800, developed at LLNL to reduce uranium corrosion, had to be bonded to a porous ceramic. The adhesive could not bond too strongly or react with the coating and jeopardize its barrier properties. Methods of improving adhesion to the Kel-F coating were studied. Silane and titanate coupling agents and a fluorocarbon surfactant were somewhat effective at increasing adhesion depending on the application procedure. X-ray photoelectron spectroscopy (XPS) was used to demonstrate the presence of fluorosurfactant at the fracture interface. Postcuring at elevated temperatures (85/sup 0/C) also significantly improved adhesive strength to the fluorocarbon coating. This was attributed to thermal acceleration to interfacial diffusion of the urethane adhesive into the fluoropolymer surface.
- Research Organization:
- Lawrence Livermore National Lab., CA
- DOE Contract Number:
- W-7405-ENG-48
- OSTI ID:
- 5337457
- Journal Information:
- I and EC Product Research and Development; (United States), Vol. 23:4
- Country of Publication:
- United States
- Language:
- English
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Related Subjects
KEL-F
ADHESION
URANIUM
CORROSION PROTECTION
SURFACE COATING
COPOLYMERS
INTERFACES
MOISTURE
ACTINIDES
DEPOSITION
ELEMENTS
METALS
ORGANIC CHLORINE COMPOUNDS
ORGANIC COMPOUNDS
ORGANIC FLUORINE COMPOUNDS
ORGANIC HALOGEN COMPOUNDS
ORGANIC POLYMERS
POLYETHYLENES
POLYMERS
POLYOLEFINS
360105* - Metals & Alloys- Corrosion & Erosion
360403 - Materials- Polymers & Plastics- Mechanical Properties- (-1987)