| 摘要 |
PROBLEM TO BE SOLVED: To provide ethylene-α-olefin elastomer having small hysteresis and having excellent resistance to wear, in particular, pilling property. SOLUTION: An endless power transmission belt has (1) a tension part; (2) a cushion part; and (3) a load support part arranged between the tension part and the cushion part. This belt contains (a) ethylene-α-olefin elastomer; (b) non-migratory internal lubricant selected from a group of graphite, molybdenum disulfide, polytetrafluoroethylene and a mixture of them and having 10 to 100 weight parts (phr) per 100 weight parts of whole rubber; and (c) free radical hardening elastomer component selected from a group of organic acrylate, organic methacrylate, metal salt ofα,β-unsaturated organic acid, and a mixture of them and containing a reaction product of co-cross linking agent of 0.1 to 100 phr. |
