| 摘要 |
PURPOSE: Provided is an economical noise-absorbing composition for cars, which has improved noise absorption than a conventional material and has no need of additional cost for the application thereof. CONSTITUTION: The noise-absorbing composition for cars comprises 25-40 wt% of a PVC, 25-35 wt% of a plasticizer, 5-10 wt% of an additive and 3-5 wt% of an adhesive. The composition is characterized by further comprising 7-40 wt% of PZT(PbZrTiO3) which is a ferrodielectric and piezoelectric particle. In particular, the PZT optionally further comprises a small amount of Sr and represents Pb0.94Sr0.06(Zr0.53Ti0.47)O3. |
