Please use this identifier to cite or link to this item: http://hdl.handle.net/1959.3/41684

Title

Evaluation of methacrylic acid-modified poly(ethylene) coatings applied by flame spray technology

Author(s)

Sugama, Toshifumi;  Kawase, Ryoichi;  Berndt, Christopher C.;  Herman, Herbert

Abstract

Using a flame spray coating process, the methacrylic acid-modified poly(ethylene) copolymer was overlaid onto cold rolled steel surfaces. An appropriate setting of the rate of air flow led to the incorporation of increased numbers of functional oxygen derivatives, such as COOH and C = O groups, into the copolymer. The interaction between these functional groups and the steel surfaces improved the interfacial bond strength of the copolymer-to-steel joints. However, such bond structures were vulnerable to high pH, created by the cathodic reaction, H2O + 1/2 O2 + 2e- → 2OH-, at the corrosion side of a defect in the coating film. The attack of the alkali solution on the interfacial reaction products caused bond breakage in copolymer-steel linkages, thereby resulting in cathodic delamination of the coating film from the steel. Nevertheless, a low rate of delamination corresponded to a strong bond strength at the copolymer-to-steel joints.

Publication type

Journal article

Source

Progress in Organic Coatings, Vol. 25, no. 2 (Jan 1995), pp. 205-216

Publication year

1995

Keyword(s)

Cathodic lamination;  Copolymer steel linkages;  Copolymers;  Corrosion;  Delamination;  Flame spraying;  Joints;  Methacrylic acid modified polyethylene coatings;  Methacrylic polyethylene copolymer;  Organic coatings;  Oxygen;  Oxygen derivatives;  pH;  Polyethylenes;  Steel;  Strength of materials;  Surfaces

Publisher

Elsevier Science

ISSN

0300-9440

Publisher URL

http://dx.doi.org/10.1016/0300-9440(94)00507-W

Copyright

Copyright © 1995 Published by Elsevier Science B.V.

Peer reviewed