基本信息:
- 专利标题： COMPOSITION FOR BONDED MAGNETS AND METHOD OF MANUFACTURING THE SAME
- 申请号：US16040342 申请日：2018-07-19
- 公开(公告)号：US20190027286A1 公开(公告)日：2019-01-24
- 发明人： Shuichi TADA , Satoshi YAMANAKA
- 申请人： NICHIA CORPORATION
- 申请人地址： JP Anan-shi
- 专利权人： NICHIA CORPORATION
- 当前专利权人： NICHIA CORPORATION
- 当前专利权人地址： JP Anan-shi
- 优先权： JP2017-140843 20170720; JP2018-127536 20180704
- 主分类号： H01F1/153
- IPC分类号： H01F1/153 ; H01F1/053 ; C08L23/12 ; C08L71/10 ; C08K5/09
摘要：
The present invention relates to a composition for bonded magnets having good hot water resistance and a method of manufacturing the composition. The method of manufacturing a composition for bonded magnets includes: obtaining a first kneaded mixture by kneading a rare earth-iron-nitrogen-based magnetic powder and an acid-modified polypropylene resin; and obtaining a second kneaded mixture by kneading the first kneaded mixture with a polypropylene resin and an amorphous resin having a glass transition temperature of 120° C. or higher and 250° C. or lower, wherein, with respect to 100 parts by weight of the rare earth-iron-nitrogen-based magnetic powder, the amount of the acid-modified polypropylene resin is 3.5 parts by weight or greater and less than 10.4 parts by weight, and the total amount of the polypropylene resin and the amorphous resin is 0.35 part by weight or greater and less than 3.88 parts by weight.
公开/授权文献:
IPC结构图谱:
| H | 电学 |
| --H01 | 基本电气元件 |
| ----H01F | 磁体；电感；变压器；磁性材料的选择 |
| ------H01F1/00 | 按所用磁性材料区分的磁体或磁性物体；磁性材料的选择 |
| --------H01F1/01 | .无机材料的 |
| ----------H01F1/03 | ..按其矫顽力区分的 |
| ------------H01F1/032 | ...硬磁材料的 |
| --------------H01F1/14 | ....金属或合金 |
| ----------------H01F1/147 | .....按成分区分的合金 |
| ------------------H01F1/153 | ......非晶态合金，如金属玻璃 |