公开(公告)号：WO2019164732A1

公开(公告)日：2019-08-29

申请号：PCT/US2019/017920

申请日：2019-02-14

Applicant: ROGERS CORPORATION

Inventor： HORN, Allen F. III ,  LAFRANCE, Patricia A. ,  CAISSE, Christopher J. ,  SPRENTALL, Karl Edward

IPC: H01F1/34 ,  H05K9/00

Abstract: Disclosed herein is a hexaferrite composite comprising polytetrafluoroethylene; and greater than or equal to 40 wt%, or 40 to 90 vol% a plurality of Co 2 Z hexaferrite particles based on the total volume of the polytetrafluoroethylene and the plurality of Co 2 Z hexaferrite particles on a void-free basis; wherein the hexaferrite composite has a porosity of greater than or equal to 10 vol% based on the total volume of the hexaferrite composite; wherein the hexaferrite composite has a permeability of greater than or equal to 2.5 and a ratio of the permeability to the permittivity of greater than or equal to 0.4, both determined at 500 MHz.

公开(公告)号：WO2017091396A1

公开(公告)日：2017-06-01

申请号：PCT/US2016/062152

申请日：2016-11-16

Applicant: ROGERS CORPORATION

Inventor： HORN III, Allen F. ,  CAISSE, Christopher J. ,  LAFRANCE, Patricia A.

IPC: H01B3/00

CPC classification number: C08K3/22 ,  B29C43/24 ,  B29C47/0004 ,  B29K2105/253 ,  C08J5/18 ,  C08J2327/18 ,  C08K2003/2241 ,  G06F1/1613 ,  H01B3/002 ,  H01Q1/243 ,  H01Q9/0485

Abstract: In an embodiment, a dielectric substrate comprises an unsintered polytetrafluoroethylene; and a high dielectric constant filler, wherein the dielectric constant of the high dielectric constant filler is greater than or equal to 35; wherein the dielectric substrate has a specific gravity of greater than or equal to 90% of a calculated theoretical density of the dielectric substrate, wherein the theoretical specific gravity is calculated based on a measured specific gravity of the high dielectric constant filler, the specific gravity of the unsintered polytetrafluoroethylene, and the relative weight fractions of the unsintered polytetrafluoroethylene and the high dielectric constant filler; and wherein the dielectric substrate has a dielectric constant of greater than or equal to 11.5 as determined at a frequency of 10 GHz.

Abstract translation: 在一个实施例中，电介质衬底包括未烧结的聚四氟乙烯; 和高介电常数填料，其中高介电常数填料的介电常数大于或等于35; 其中所述电介质基板具有大于或等于所述电介质基板的计算理论密度的90％的比重，其中所述理论比重基于所述高电介质常数填充物的测量比重计算，所述比重 未烧结的聚四氟乙烯以及未烧结的聚四氟乙烯和高介电常数填料的相对重量分数; 并且其中介电衬底具有大于或等于11.5的介电常数，如在10GHz的频率下确定的那样。