SOUND ABSORBING AND INSULATING MATERIAL AND METHOD FOR MANUFACTURING THE SAME

摘要

The present invention relates to a sound absorbing and insulating material and a method for manufacturing the same, more particularly to a sound absorbing and insulating material obtained by impregnating a polyimide binder into a nonwoven fabric formed of a heat-resistant fiber, having superior sound-absorbing property, flame retardancy, heat resistance and heat resistance, thus being applicable to parts maintained at high temperatures of 300° C. as well as at room temperature and moldability due to the use of the polyimide binder, and a method for manufacturing the same.

主权项

1. A sound absorbing and insulating material comprising:
a nonwoven fabric comprising 30-100 wt % of a heat-resistant fiber; and a polyimide binder impregnated into the nonwoven fabric and present in the same layer as the nonwoven fabric, being distributed and attached on a yarn surface of the nonwoven fabric and maintaining a three-dimensional structure inside the nonwoven fabric by maintaining or further forming micro cavities of the nonwoven fabric.