| 简介 |
PROBLEM TO BE SOLVED : To provide a composition for bonded magnet and a bonded magnet obtained by forming the same, capable of remarkably improving deterioration of permanent demagnetization factor under high temperature and humidity with the passage of time, improving magnetic property while sustaining mechanical strength.
SOLUTION : The invention relates to the composition for bonded magnet comprising (A) magnetic powder based on rare earth-transition metal system dispersed in (B) a resin binder, wherein the resin binder (B) comprises ≥50 wt.% of (B-1) a polymerized fatty acid-based polyamide block copolymer and/or (B-2) a polymerized fatty acid-based polyether ester amide block copolymer, and ≥1 wt.% of a silane compound. |
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