| 摘要 |
PROBLEM TO BE SOLVED: To provide an evaluation method of a rubber/brass composite capable of determining an appropriate vulcanization condition of providing optimum adhesion between the rubber and brass and appropriately acquiring a deterioration state.SOLUTION: The evaluation method of a rubber/brass composite includes: molding a basic sample formed of the rubber/brass composite formed by embedding a brass material in an unvulcanized rubber composition containing a diene rubber and 3-10 wt.% of a sulphur with respect to the weight of the diene rubber; molding an evaluation sample formed by subjecting the basic sample to vulcanization and aging processing; applying X-rays within the range of 8900-9300 eV to the basic sample and the evaluation sample respectively, while changing energy thereof; measuring peak height of the obtained X-ray absorption spectrum of 8991-8993 eV or 9022-9023 eV; and evaluating a ratio of the peak height of the evaluation sample to the peak height H1 of the basic material. |
