| 简介 |
PROBLEM TO BE SOLVED : To provide a composition for a bonded magnet, which keeps excellent magnetic properties and is superior in injection molding properties.
SOLUTION : The composition for the bonded magnet includes at least a magnet powder and a polyamide resin. The magnet powder contains a rare-earth element, and the polyamide resin has a number average molecular weight in a range of 1, 000-10, 000, which has been determined from the distribution of the molecular weight in terms of polymethyl methacrylate. The composition for the bonded magnet has a 2, 6-di-t-butylphenol structure and further contains 0.04-0.60 mass% of a butylphenol compound having the molecular weight of 200-300.
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