公开(公告)号：US10832829B2

公开(公告)日：2020-11-10

申请号：US15550961

申请日：2016-10-25

申请人： SUMITOMO ELECTRIC INDUSTRIES, LTD. ,  SUMITOMO ELECTRIC WINTEC, INC.

发明人： Shinya Ota ,  Shuhei Maeda ,  Hideaki Saito ,  Jun Sugawara ,  Masaaki Yamauchi ,  Yasushi Tamura ,  Kengo Yoshida ,  Yudai Furuya ,  Yuji Hatanaka

IPC分类号： H01B3/48 ,  H01B3/44 ,  H01B3/00 ,  C08J9/26 ,  H01B3/46 ,  H01B7/02 ,  H01B13/06 ,  H01B13/16 ,  H01B5/00

摘要： An insulated electric wire includes a linear conductor and one or a plurality of insulating layers formed on an outer peripheral surface of the conductor. At least one of the one or plurality of insulating layers contains a plurality of pores, outer shells are disposed on peripheries of the pores, and the outer shells are derived from shells of hollow-forming particles having a core-shell structure. A varnish for forming an insulating layer contains a resin composition forming a matrix and hollow-forming particles having a core-shell structure and dispersed in the resin composition. In the varnish, cores of the hollow-forming particles contain a thermally decomposable resin as a main component, and shells of the hollow-forming particles contain a main component having a higher thermal decomposition temperature than the thermally decomposable resin.