| 简介 |
PROBLEM TO BE SOLVED : To provide a rare earth bond magnet which is less in demagnetization to a temperature change and high in physical heat resistance.
SOLUTION : A rare earth bond magnet comprises : rare earth-iron based magnet powder; and a thermosetting resin composition. In the thermosetting resin composition, dicyclopentadiene type epoxy resins including a predetermined structure of which the average of repeating units n is 1-3 as a main agent, and dicyandiamide as a hardening agent are blended. Preferably, of the dicyclopentadiene type epoxy resins blended in the thermosetting resin composition, a dicyclopentadiene type epoxy resin of which the repeating unit n is 1 accounts for 70% or more.
SELECTED DRAWING : Figure 1
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