| 摘要 |
PURPOSE: To obtain compositions for a resin coupling type magnet having excellent magnetic characteristics, moldability and physical characteristics (particularly mechanical strength) by adding polyethylene-ethylacrylate copolymerization resin to polyamide resin with a particular proportion. CONSTITUTION: In a component of magnetic powder with the anisotropic magnetic field (HA) of higher than 50 KOe and Class 1, Class 2 or higher polyamide resin, 0.01 to 50 pts.wt. of polyethylene-ethylacrylate copolymerization resin or polyorefin resin and/or polyorefin copolymerization resin is added to 100 pts.wt. of polyamide resin. Magnetic powder is rate earth cobalt, rate earth-iron- boron, and rare earth-iron-nitrogen magnetic powder which are normally used for resin-coupled type magnets. 0.1 to 20 pts.wt. of polyethylene-ethylacrylate copolymerization resin to 100 pts.wt. polyamide resin is desired but 1 to 10 pts.wt. is more desired. |
