Showing papers on "Constrained-layer damping published in 1973"

A Latex IPN (Interpenetrating Polymer Network) Coating System for Damping Noise and Vibrations over a Broad Temperature Range

Abstract: : Based on the principles of constrained layer damping, 'Silent Paint' is a two-layer coating system capable of attenuating noise and vibration over a broad temperature range. The damping undercoat layer is composed primarily of a methacrylic/acrylic semi-compatible inter-penetrating polymer network (IPN) in latex form, with thickeners and preservative added. The constraining overcoat layer is based on a reinforced epoxy resin, and exhibits great stiffness. The total system, exhibiting significant damping behavior from -30 deg C to over + 70 deg C, used in the form of coatings permits easy application on arbitrary substrate configurations. The synthesis of the latex IPN is summarized, and the mechanical and damping behavior of the new coating system is compared to several materials intended for use as noise and vibration damping products.