公开(公告)号：US20210284893A1

公开(公告)日：2021-09-16

申请号：US16330442

申请日：2017-09-13

Applicant: ROGERS CORPORATION ,  TSINGHUA UNIVERSITY

Inventor： Yang Zhong ,  Lei Liu ,  Jing Jiang ,  Li Zhang ,  Kexin Chen ,  Zhaobo Tian ,  Yiyao Ge

IPC: C09K5/14 ,  C01B21/064 ,  C08K3/38 ,  C08J9/00 ,  F28D20/02

Abstract: In an embodiment, a method for preparing expanded hexagonal boron nitride comprises mixing a boron compound and a carbon template in an organic solvent; removing the organic solvent to provide a dried mixture of the boron compound and the carbon template; exposing the dried mixture to a nitrogen-containing gas under conditions effective to provide a crude product comprising hexagonal boron nitride; removing the carbon template from the crude product to provide the expanded hexagonal boron nitride.

公开(公告)号：US20210020343A1

公开(公告)日：2021-01-21

申请号：US16930907

申请日：2020-07-16

Applicant: ROGERS CORPORATION

Inventor： Yajie Chen ,  Robert C. Daigle ,  Li Zhang

IPC: H01F1/34 ,  C01G53/00 ,  C08K3/22 ,  C08K7/08 ,  C08K9/02

Abstract: A magnetic fiber comprises a core comprising a spinel ferrite of formula Me1-xMxFeyO4, wherein Me is Mg, Mn, Fe, Co, Ni, Cu, Zn, or a combination thereof, x=0 to 0.25, and y=1.5 to 2.5, wherein the core is solid or at least partially hollow; and a shell at least partially surrounding the core, and comprising a Me1-xMxFey alloy, wherein when the core is solid with Me=Ni and x=0 the magnetic fiber has a diameter of greater than 0.3 micrometer. A magneto-dielectric material having a magnetic loss tangent of less than or equal to 0.03 at 1 GHz comprises a polymer matrix; and a plurality of the magnetic fibers.