| 摘要 |
<p>The present invention relates to a sound-absorbing material for an automobile including foaming urethane foam to which a carbon nanotube is applied, and a preparation method thereof. More particularly, the present invention relates to a sound-absorbing material for an automobile, which has excellent sound absorption and insulation performance even while maintaining excellent flame retardancy. In particular, the sound-absorbing material is provided with an increased ratio of open cells while uniformly maintaining a cell structure of the foam by adding the carbon nanotube as a portion of flame retardant filler to semi-rigid foaming urethane foam.</p> |
