Sol for bonding expoxies to aluminum or titanium alloys

Details Sol for bonding expoxies to aluminum or titanium alloys Sol for bonding expoxies to aluminum or titanium alloys

1997-09-18

2000-03-14

Dixon, Merrick

Stock material or miscellaneous articles

Composite

Of silicon containing

428447, 427301, 427327, 427387, 427409, B32B 906

Patent

active

060370602

ABSTRACT:
A surface treatment for titanium and aluminum alloys forms a sol-gel film covalently bonded on the metal surface to produce strong, durable adhesive bonds between the metal and an organic adhesive without using toxic chemicals and while significantly reducing or eliminating rinse water requirements of traditional anodizing or etching processes. An aqueous sol containing an alkoxyzirconium and a glyddoxysilane with an organic acid catalyst and zirconium stabilizer is applied to etched or grit blasted substrates by dipping, spraying, or drenching, to produce bonds in a single application comparable in strength and performance to standard anodize controls. Parameters affecting performance include the sol composition, the Si/Zr ratio, the ratio of sol ingredients, the concentration of the sol, the carrier solvent, solution age, catalysts, surface pretreatment, application method, curing process, and primer used.

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Abstract, Method for Improving Durability of Electrode Tip, Japanese Appl. 63--86129 (Kawamoto) Jan. 1990.

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