Surface pre-treatment prior to underwater bonding

Details Surface pre-treatment prior to underwater bonding Surface pre-treatment prior to underwater bonding

B - Operations, Transporting

05

D

117/95

B05D 7/14 (2006.01) B05D 1/36 (2006.01) B05D 3/10 (2006.01)

Patent

CA 1164284

ABSTRACT The invention relates to a method of forming a metal-resin bond in the presence of environmental contamination of the metal surface by, for example, adsorbed water. The method consists of cleaning the metal surface and then coating it with a pre-treatment material adapted to displace the adsorbed contaminant and to be displaced in turn by the applied resin. The method is particularly relevant to the formation of steel/epoxy resin bonds underwater for the repair of submerged structures. The pre-treatment material may consist of a hydrocarbon solvent containing in solution a surfactant such as an ionic surfactant together with a viscous hydrocarbon such as petroleum jelly.

382646

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