| abstract |
A thermally expandable material is provided that, once expanded, has a Young's storage modulus E' between 0.1 MPa and 1000 MPa, a loss factor of at least 0.3 (preferably, at least 1) and a shear storage modulus G' preferably between 0.1 MPa and 500 MPa at a temperature between -10 and +40 degrees C in the frequency range 0 to 500 Hz. Such materials are useful in connection with reducing the transfer of vibrations from a vibration generator, as may be present in a vehicle. |