Selecting Organosilane Adhesion Promoters and Primers
Edward M Petrie
- Jun 13, 2012
This article is intended to be a guide to the selection of an organosilane adhesion promoter or primer. The choice of the correct organosilane family or a type within a given family is often not a straight-forward task. Organosilane adhesion promoters and primers work in a similar fashion to improve adhesion. However, they differ in the way that they are applied. The primer is applied directly to a substrate surface before an adhesive or sealant is applied. The promoter is added to the adhesive or sealant formulation and must migrate to the substrate surface before the adhesive cures for it to be effective. In either case the organosilane adds a new layer at the interface as shown in Figure 1. This new layer is bifunctional and bonds well to both the substrate and the adhesive or sealant. The new layer is thin so that it provides improved interfacial bonding characteristics, yet it is not thick enough so that its bulk properties significantly affect the overall properties of the bond.
not all information are complete ,others is marketing - Jun 13, 2012
posted by emil schmid, R&D - Applied/ Formulation/ Product development at tack-service-international
dear sirs,thank you for this information.however i learned during my 40 years expierence.this is not the expierence of the writer.this written by the rawmaterial supplier.also a lot of additonal informations are missing here and not complete at all.most of them are too general.for my understanding this article is written by the rawmaterial supplier,not from the author.