公开(公告)号：US10336039B2

公开(公告)日：2019-07-02

申请号：US15490141

申请日：2017-04-18

申请人： E I DU PONT DE NEMOURS AND COMPANY

发明人： Byoung Sam Kang ,  Sang Woo Lee

IPC分类号： H01B17/60 ,  B32B19/06 ,  B32B5/02 ,  B32B5/12 ,  B32B5/16 ,  B32B5/22 ,  B32B5/24 ,  B32B5/30 ,  B32B7/12 ,  B32B19/02

摘要： This invention pertains to a laminate structure suitable for use as electrical insulation, comprising a first paper layer comprising 90 to 99 weight percent uniformly distributed calcined mica and 1 to 10 weight percent supporting material, a majority by weight of the supporting material being in the form of a floc; and a support layer comprising unidirectional filaments or unidirectional yarns or woven yarns; wherein the support layer is bound to the first paper layer; the laminate structure having a dielectric strength of 15 kV/mm or greater, a Gurley porosity of 400 seconds or less, and total mica content of 60 weight percent or greater. The laminate structure can further comprise a second paper layer bound to the support layer, the second paper layer comprising 90 to 99 weight percent uniformly distributed calcined mica and 1 to 10 weight percent supporting material, a majority by weight of the supporting material being in the form of a floc.

公开(公告)号：US10186353B2

公开(公告)日：2019-01-22

申请号：US15188500

申请日：2016-06-21

申请人： E I DU PONT DE NEMOURS AND COMPANY

发明人： Byoung Sam Kang ,  Sang Woo Lee

IPC分类号： H01B17/60 ,  B32B5/02 ,  B32B19/02 ,  B32B19/06 ,  H01B17/66 ,  B32B5/12 ,  B32B5/16 ,  B32B5/22 ,  B32B5/24 ,  B32B5/30 ,  B32B7/12 ,  H01B3/04 ,  H02K3/30

摘要： Laminate structure suitable for use as electrical insulation comprising: a) a corona-resistant layer comprising 90 to 99 weight percent uniformly distributed calcined mica and 1 to 10 weight percent aramid material, the aramid material being in the form of floc, fibrid, or mixtures thereof; b) a support layer comprising unidirectional or woven filament yarns, the support layer having a first and second face; and c) a resin-compatible layer comprising 60 to 80 weight percent uniformly distributed uncalcined mica and 20 to 40 weight percent aramid material, the aramid material being in the form of floc, fibrid, or mixtures thereof; wherein the first face of the support layer is directly bound to the corona-resistant layer and the second face of the support layer is directly bound to the resin-compatible layer; the laminate structure having a total mica content of 60 weight percent or greater.