Abstract
Plastisol sealants are widely used in the automotive industry both as structural adhesives and as water-proofing compounds. Over the years, a variety of materials have been used to promote adhesion in formulated plastisol sealants. This paper covers experimental work with a series of plastisol sealants using silane coupling agents as integral blend adhesion promoters. Silanes with cyclic epoxy, mer capto, amino, and diamino functional groups have been studied. The influence of silane structure on adhesion, viscosity, viscosity stabil ity, flow properties, and sag resistance has been examined. After detailed study of formulating variables, it has been found that silane coupling agents will contribute significantly to the improvement of a number of essential sealant characteristics.
Get full access to this article
View all access options for this article.