| 摘要 |
PURPOSE:To manufacture a rare earth metal resin magnet in a mass production by injection molding a kneaded material of power of intermetallic compound containing mainly Sm and Co surface-treated with silane coupling agent, epoxy resin and its curing agent under the prescribed conditions. CONSTITUTION:The using amount of resin in which 30-50vol% of diethylene triamine is added to long chain fatty or alicyclic epoxy resin is in a range of 10-40vol%, and the workability of injection molding and magnetic properties are preferably held. Magnet powder mainly containing Sm and Co is moistened by alcohol solution of 5-20vol% of gamma-mercapto-propyl-trimethoxysilane, water- repellent and lubricating properties are imparted to the powder, and kneaded at ambient temperature with prepared epoxy resin. The mixture is molded under the conditions of ambient temperature -80 deg.C, 1,500-2,400kg/cm<2>, 5-30sec of injecting time. According to this structure, the magnet powder is preferably dispersed in the resin, the fluidity of the mixture is preferably maintained, worked with or without application of a magnetic field, and anisotropic or isotropic epoxy resin magnet can be obtained in good mass productivity. |
