| 摘要 |
The present invention is a crosslinked body containing: (A) 100 parts by mass of an ethylene/α-olefin/unconjugated-polyene copolymer which has at least one peak of tanδ within a temperature range of -50 to -30°C, the peak being obtained by dynamic viscoelasticity measurement ; (B) 50 to 500 parts by mass of an olefin-based copolymer which has at least one peak of tanδ within a temperature range of 0 to 40°C, the peak being obtained by dynamic viscoelasticity measurement; (C) 5 to 300 parts by mass of a softening material; (D) 10 to 300 parts by mass of a reinforcing filler; and (E) 0.1 to 10 parts in mass of a vulcanization agent, wherein the crosslinked body is obtained by crosslinking a composition in which the content ratio ((C)/(D)) of (C) the softening material to (D) the reinforcing filler in mass is 0.3 to 1.5, and has a durometer hardness (value obtained immediately after measurement) of 50 to 80. The crosslinked body according to the present invention has both high hardness and low rebound resilience. From the crosslinked body, a damping material having both high hardness and low rebound resilience, and various products which require damping properties can be obtained. |
