- 专利标题: BONDED PERMANENT MAGNETS PRODUCED BY ADDITIVE MANUFACTURING
-
申请号: PCT/US2018/018168申请日: 2018-02-14
-
公开(公告)号: WO2018152192A1公开(公告)日: 2018-08-23
- 发明人: UCAR, Huseyin , PARANTHAMAN, Mariappan Parans , RIOS, Orlando , MONONO, Belther Mojoko , POST, Brian K. , KUNC, Vlastimil , NLEBEDIM, Cajetan I. , MCCALLUM, R. William , MCCALL, Scott K.
- 申请人: UT-BATTELLE, LLC , IOWA STATE UNIVERSITY RESEARCH FOUNDATION, INC. , LAWRENCE LIVERMORE NATIONAL LABORATORY
- 申请人地址: One Bethel Valley Road Oak Ridge, Tennessee 37831-6528 US
- 专利权人: UT-BATTELLE, LLC,IOWA STATE UNIVERSITY RESEARCH FOUNDATION, INC.,LAWRENCE LIVERMORE NATIONAL LABORATORY
- 当前专利权人: UT-BATTELLE, LLC,IOWA STATE UNIVERSITY RESEARCH FOUNDATION, INC.,LAWRENCE LIVERMORE NATIONAL LABORATORY
- 当前专利权人地址: One Bethel Valley Road Oak Ridge, Tennessee 37831-6528 US
- 代理机构: GROLZ, Edward W.
- 优先权: US15/432,251 20170214
- 主分类号: A61N2/00
- IPC分类号: A61N2/00 ; H01F1/055 ; H01F1/08
摘要:
A method for producing a bonded permanent magnet, comprising: (i) incorporating a solid precursor material comprising a thermoplastic crosslinkable polymer and magnetic particles into an additive manufacturing device, wherein the crosslinkable polymer has a delayed crosslinking ability; (ii) melting the precursor material by heating it to a temperature of at least and no more than 10C above its glass transition temperature; (iii) extruding the melt through the additive manufacturing device and, as the extrudate exits from the nozzle and is deposited on a substrate as a solidified preform of a desired shape, exposing the resultant extrudate to a directional magnetic field of sufficient strength to align the magnetic particles; and (iv) curing the solidified preform by subjecting it to conditions that result in crosslinking of the thermoplastic crosslinkable polymer to convert it to a crosslinked thermoset. The resulting bonded permanent magnet and articles made thereof are also described.