A polyolefin based crosslinked foam

摘要

A polyolefin based crosslinked foam comprises a polyolefin based resin (A) and a conjugated diene polymer (B) having a peak tan delta value, obtained by dynamic viscoelasticity measurement, at a temperature between -20 DEG C and 40 DEG C. The foam may have an impact absorbability, as measured by an impact resilience measuring instrument, of from 10 to 50% and a vibration absorbability such as to provide a damping coefficient ratio (C/Cc) of at least 0.1%. The foam can be prepared by mixing the polyolefin based resin (A) and the conjugated diene polymer (B) and foaming the mixture.