Is the PU foam Sealant have Sound Insulation Function?

PU foam sealant is a moisture-cured polyurethane foam. After curing, it forms a porous rigid foam structure, widely used in waterproofing, sealing and filling for doors/windows installations, gap and hole filling, electronic engineering, transportation, building etc., and can also achieve sound insulation. Some may wonder: does PU foam sealant truly insulate sound? Let's elaborate today.

PU foam sealant can indeed provide certain sound insulation. This is mainly due to its high surface activity, which effectively reduces the liquid surface tension. It arranges double electron layers on the liquid film surface to enclose air, forming bubbles that aggregate into foam, thus achieving sound insulation. As a material, it rapidly expands to fill all gaps after spraying. Upon completing the chemical reaction with air, it transforms into a foam-board-like material with sound-insulating properties.

China PU foam sealant and Silicone Sealant suppliers-Lotfix, provides high-quality products that have won unanimous praise from numerous customers!