Choosing the Right Silane Adhesion Promoters for SMP Sealants
Silane-modified polypropylene oxides (SMPs), or MS Polymers, offer a wide range of physical properties and can be formulated into a variety of moisture-curable adhesives and sealants. Silane additives greatly influence the performance of SMP adhesives and sealants and play a key role in the success of these products.
This article outlines silane chemistry and the preparation and characterization of a low-modulus SMP sealant. The article also reviews the impact of various aminosilane adhesion promoters on the sealant's shelf life, cure rate, physical properties, and dry and wet adhesion.