POLYURETHANE SOUND-INSULATING COMPOSITION AND METHOD OF MANUFACTURING SOUND-ABSORBING AND INSULATING MATERIAL FOR VEHICLES USING THE SAME

摘要

A liquid polyurethane sound-insulating composition prepared by forming a urethane bond between a polyether polyol resin and modified methylene bisphenyl diisocyanate and uniformly dispersing an inorganic filler and a method of manufacturing a sound-absorbing and insulating material for vehicles, and therefore various types of sound-absorbing and insulating materials may be manufactured with no scraps by spray-coating a surface of a sound-absorbing material with the polyurethane sound-insulating composition, and sound-insulating performance with respect to a weight of the composition. Particularly, provided are a polyurethane sound-insulating composition which may be partially spray-coated on a part requiring sound-insulating performance, rather than being spray-coated on an entire surface of a sound-absorbing material, thereby minimizing an increase in weight and maximizing the sound-insulating performance, and a method of manufacturing a sound-absorbing and insulating material for vehicles.

主权项

1. A polyurethane sound-insulating composition, comprising:
a polyether polyol resin at 15 to 30 wt %, modified methylene bisphenyl diisocyanate at 10 to 25 wt %, and an inorganic filler at 55 to 75 wt %.