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Title: Improving adhesion between a segmented poly(ether-urethane) and a fluorocarbon copolymer coating

Abstract

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.

Authors:
; ;
Publication Date:
Research Org.:
Lawrence Livermore National Lab., CA
OSTI Identifier:
5337457
DOE Contract Number:  
W-7405-ENG-48
Resource Type:
Journal Article
Journal Name:
I and EC Product Research and Development; (United States)
Additional Journal Information:
Journal Volume: 23:4
Country of Publication:
United States
Language:
English
Subject:
36 MATERIALS SCIENCE; 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)

Citation Formats

Hoffman, D M, Walkup, C M, and Chiu, I L. Improving adhesion between a segmented poly(ether-urethane) and a fluorocarbon copolymer coating. United States: N. p., 1984. Web. doi:10.1021/i300016a012.
Hoffman, D M, Walkup, C M, & Chiu, I L. Improving adhesion between a segmented poly(ether-urethane) and a fluorocarbon copolymer coating. United States. https://doi.org/10.1021/i300016a012
Hoffman, D M, Walkup, C M, and Chiu, I L. 1984. "Improving adhesion between a segmented poly(ether-urethane) and a fluorocarbon copolymer coating". United States. https://doi.org/10.1021/i300016a012.
@article{osti_5337457,
title = {Improving adhesion between a segmented poly(ether-urethane) and a fluorocarbon copolymer coating},
author = {Hoffman, D M and Walkup, C M and Chiu, I L},
abstractNote = {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.},
doi = {10.1021/i300016a012},
url = {https://www.osti.gov/biblio/5337457}, journal = {I and EC Product Research and Development; (United States)},
number = ,
volume = 23:4,
place = {United States},
year = {Sun Jan 01 00:00:00 EST 1984},
month = {Sun Jan 01 00:00:00 EST 1984}
}