| 摘要 |
PURPOSE:To obtain the title composition improved in heat resistance, humidity resistance, chemical resistance and mechanical strengths by applying or adhering a specified polymer to a magnet powder. CONSTITUTION:99.5-60vol.% (99.9-85wt.%) magnet powder (a) (e.g., Sr0.6Fe2O3) is surface-treated with 0-5wt.%, based on component (a), coupling agent (b) (e.g., N-beta-aminoethyl-gamma-aminopropyltrimethoxysilane), and 0.5-40vol.% (0.1-15wt.%) polycyanoaryl ether (c) which is a polymer of an intrinsic viscosity (in p- chlorophenol at 60 deg.C) >=0.2dl/g, having repeating units of formula I (wherein Ar is a group of formula II-V) is applied or adhered to the surface-treated powder. |
