| 摘要 |
PROBLEM TO BE SOLVED: To provide a rubber magnet having a high orientation and excellent magnetic characteristics. SOLUTION: The composition for bond magnet comprising a magnetic anisotropy magnetic powder and a flexible binder is provided with such an αas α≡al /ah >=10, where ah and al are the inclination of characteristic curve of required torque (kneading torque) vs temperature when a stirrer/kneader filled with the binder is rotated on the higher temperature side and lower temperature side, respectively, of a temperature Tc where the derivative of second order is maximized. The ah is the tangential inclination of the characteristic curve at a temperature higher by 30 deg.C than the Tc and al is the tangential inclination of the characteristic curve at a temperature lower by 20 deg.C than the Tc . |
