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Adhesion Promoter for Polyimide

IP.com Disclosure Number: IPCOM000082369D
Original Publication Date: 1974-Nov-01
Included in the Prior Art Database: 2005-Feb-28
Document File: 1 page(s) / 11K

Publishing Venue

IBM

Related People

Vaughan, EV: AUTHOR

Abstract

The strength of the adhesive band between a polyimide surface and most commercially available adhesives is greatly improved, if the polyimide surface is first treated with a primer consisting of 30% by volume ethyl silicate, 50% by volume methyl alcohol and 20% by volume xylene.

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Adhesion Promoter for Polyimide

The strength of the adhesive band between a polyimide surface and most commercially available adhesives is greatly improved, if the polyimide surface is first treated with a primer consisting of 30% by volume ethyl silicate, 50% by volume methyl alcohol and 20% by volume xylene.

The organic solvent action of the primer has the effect of softening the polyimide surface. Whilst in this state, the ethyl silicate decomposes to leave hydrated silica dispersed into and over the softened polyimide surface. The methyl alcohol and xylene eventually evaporate and the polyimide rehardens with a silica bonded surface which is receptive to the adhesives.

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