公开(公告)号：US11993679B2

公开(公告)日：2024-05-28

申请号：US17252508

申请日：2019-06-18

Applicant: SEKISUI POLYMATECH CO., LTD.

Inventor： Hiroki Kudoh ,  Taku Sasaki ,  Kana Hattori ,  Kazuyuki Yahara ,  Yasunari Kusaka

IPC: F28F21/06 ,  C08G77/06 ,  C08G77/18 ,  C08J5/18 ,  C08K7/06 ,  H05K7/20

CPC classification number: C08G77/18 ,  C08G77/06 ,  C08J5/18 ,  C08K7/06 ,  H05K7/2039 ,  F28F21/06

Abstract: A thermally conductive sheet 10 of the present invention comprises a polymer matrix 12 and an anisotropic filler 13, and the anisotropic filler 13 is oriented in a thickness direction. The anisotropic filler 13 is disposed in such a way as to fall down in a proportion of 1 to 45% in the vicinity of surfaces 10A, 10B of the thermally conductive sheet 10. According to the present invention, a thermally conductive sheet capable of sufficiently improving the thermal conductive properties in the thickness direction can be provided.

公开(公告)号：US11987686B2

公开(公告)日：2024-05-21

申请号：US17252957

申请日：2019-06-18

Applicant: SEKISUI POLYMATECH CO., LTD.

Inventor： Hiroki Kudoh ,  Taku Sasaki ,  Kana Hattori ,  Kazuyuki Yahara ,  Yasunari Kusaka

IPC: C08K3/04 ,  C08L83/04 ,  C08K3/22 ,  C08K7/04 ,  C08K7/18

CPC classification number: C08K3/04 ,  C08L83/04 ,  C08K2003/2227 ,  C08K7/04 ,  C08K7/18 ,  C08K2201/001 ,  C08K2201/003 ,  C08K2201/004

Abstract: A thermally conductive sheet 10 comprises a polymer matrix 12 and an anisotropic filler 13, and the anisotropic filler 13 is oriented in a thickness direction. The anisotropic filler 13 is exposed on the surfaces 10A, 10B of the thermally conductive sheet 10, and the anisotropic filler 13 which is exposed is disposed in such a way as to fall down in a proportion of 3.5 to 45%.

公开(公告)号：US11084965B2

公开(公告)日：2021-08-10

申请号：US16095978

申请日：2017-04-07

Applicant: SEKISUI POLYMATECH CO., LTD.

Inventor： Hiroki Kudoh ,  Tomonari Yamada

IPC: C09K5/14 ,  C08J5/18 ,  C08K3/22 ,  C08K7/06 ,  C08L101/00 ,  B29C35/02 ,  B29C39/00 ,  B29C39/38 ,  B29C69/00 ,  C08G77/06 ,  C08K3/04 ,  B29K83/00 ,  B29K507/04 ,  B29L7/00

Abstract: To provide a thermally conductive sheet that has high thermal conductivity.
A method for producing a thermally conductive sheet S includes a step of obtaining a thermally conductive composition by mixing a reactive liquid resin, which forms a rubbery or gelatinous matrix when crosslinked, a volatile liquid having a boiling point 10° C. or more higher than a curing temperature of the reactive liquid resin, and a thermally conductive filler; a step of forming a molded body by crosslinking and curing the reactive liquid resin at a temperature 10° C. or more lower than the boiling point of the volatile liquid; and a step of evaporating the volatile liquid by heating the molded body, in which these steps are performed sequentially.

公开(公告)号：US11702579B2

公开(公告)日：2023-07-18

申请号：US17246924

申请日：2021-05-03

Applicant: SEKISUI POLYMATECH CO., LTD.

Inventor： Hiroki Kudoh ,  Tomonari Yamada

IPC: C09K5/14 ,  C08J5/18 ,  C08K3/22 ,  C08K7/06 ,  C08L101/00 ,  B29C35/02 ,  B29C39/00 ,  B29C39/38 ,  B29C69/00 ,  C08G77/06 ,  C08K3/04 ,  B29K83/00 ,  B29K507/04 ,  B29L7/00

CPC classification number: C09K5/14 ,  B29C35/02 ,  B29C39/003 ,  B29C39/38 ,  B29C69/001 ,  C08G77/06 ,  C08J5/18 ,  C08K3/04 ,  C08K3/22 ,  C08K7/06 ,  C08L101/00 ,  B29K2083/00 ,  B29K2507/04 ,  B29K2995/0013 ,  B29L2007/002 ,  C08J2383/04 ,  C08K2003/2227 ,  C08K2201/001

Abstract: A method for producing a thermally conductive sheet S includes a step of obtaining a thermally conductive composition by mixing a reactive liquid resin, which forms a rubbery or gelatinous matrix when crosslinked, a volatile liquid having a boiling point 10° C. or more higher than a curing temperature of the reactive liquid resin, and a thermally conductive filler; a step of forming a molded body by crosslinking and curing the reactive liquid resin at a temperature 10° C. or more lower than the boiling point of the volatile liquid; and a step of evaporating the volatile liquid by heating the molded body, in which these steps are performed sequentially.

公开(公告)号：US20210269695A1

公开(公告)日：2021-09-02

申请号：US17246924

申请日：2021-05-03

Applicant: SEKISUI POLYMATECH CO., LTD.

Inventor： Hiroki Kudoh ,  Tomonari Yamada

IPC: C09K5/14 ,  C08J5/18 ,  C08K3/22 ,  C08K7/06 ,  C08L101/00 ,  B29C35/02 ,  B29C39/00 ,  B29C39/38 ,  B29C69/00 ,  C08G77/06 ,  C08K3/04

Abstract: A method for producing a thermally conductive sheet S includes a step of obtaining a thermally conductive composition by mixing a reactive liquid resin, which forms a rubbery or gelatinous matrix when crosslinked, a volatile liquid having a boiling point 10° C. or more higher than a curing temperature of the reactive liquid resin, and a thermally conductive filler; a step of forming a molded body by crosslinking and curing the reactive liquid resin at a temperature 10° C. or more lower than the boiling point of the volatile liquid; and a step of evaporating the volatile liquid by heating the molded body, in which these steps are performed sequentially.

公开(公告)号：US11008462B2

公开(公告)日：2021-05-18

申请号：US16605886

申请日：2018-06-25

Applicant: SEKISUI POLYMATECH CO., LTD.

Inventor： Hiroki Kudoh

IPC: C08J5/18 ,  C08L83/04 ,  H01L23/36 ,  C08K3/04 ,  C08K5/541 ,  C08K7/06

Abstract: A thermally conductive sheet contains a matrix composed of an organopolysiloxane having a crosslinked structure, a thermally conductive filler dispersed in the matrix, and a silicon compound. The silicon compound is at least one selected from the group consisting of alkoxysilane compounds and alkoxysiloxane compounds.

公开(公告)号：US11618247B2

公开(公告)日：2023-04-04

申请号：US17770539

申请日：2020-10-26

Applicant: SEKISUI POLYMATECH CO., LTD.

Inventor： Hiroki Kudoh ,  Miho Ishihara

IPC: B32B27/00 ,  B32B38/00 ,  B32B27/08 ,  B32B27/20

Abstract: Provided is a thermally conductive sheet having high thermal conductivity not only in a thickness direction of the sheet but also in one direction along a plane direction of the sheet. The thermally conductive sheet is a thermally conductive sheet containing a scaly filler 12 in a polymer matrix 11, wherein the scaly filler 12 is oriented such that a long axis direction of a scale surface is along one of a first direction that is a thickness direction of the thermally conductive sheet and a second direction that is perpendicular to the first direction, and a transverse axis direction that is perpendicular to the long axis direction in the scale surface is along the other of the first direction and the second direction.

公开(公告)号：US10964620B2

公开(公告)日：2021-03-30

申请号：US16086202

申请日：2017-02-27

Applicant: SEKISUI POLYMATECH CO., LTD.

Inventor： Hiroki Kudoh

IPC: F28F7/00 ,  H01L23/373 ,  F28F21/02 ,  H01L23/42 ,  H05K7/20 ,  C08K3/04 ,  C08K7/06

Abstract: To provide a thermally conductive sheet that has high thermal conductivity. A thermally conductive sheet contains carbon fibers and a flake graphite powder that are dispersed in a polymer matrix. The flake graphite powder is disposed between the carbon fibers, the fiber axis directions of the carbon fibers are oriented in a sheet thickness direction Z, long axis directions of flake surfaces of the flake graphite powder are oriented in the sheet thickness direction Z, and normal directions to the flake surfaces are randomly oriented in a surface direction of the sheet. A mass ratio of the carbon fibers to the flake graphite powder is in a range of 120:10 to 60:70. According to this thermally conductive sheet, the thermal conductivity can be increased compared to when carbon fibers are used alone or a flake graphite powder is used alone.

公开(公告)号：US20190092995A1

公开(公告)日：2019-03-28

申请号：US16095978

申请日：2017-04-07

Applicant: SEKISUI POLYMATECH CO., LTD.

Inventor： Hiroki Kudoh ,  Tomonari Yamada

IPC: C09K5/14 ,  B29C39/00 ,  B29C39/38 ,  B29C69/00 ,  C08G77/06 ,  C08J5/18 ,  C08K3/04 ,  C08K7/06 ,  C08K3/22

Abstract: To provide a thermally conductive sheet that has high thermal conductivity.A method for producing a thermally conductive sheet S includes a step of obtaining a thermally conductive composition by mixing a reactive liquid resin, which forms a rubbery or gelatinous matrix when crosslinked, a volatile liquid having a boiling point 10° C. or more higher than a curing temperature of the reactive liquid resin, and a thermally conductive filler; a step of forming a molded body by crosslinking and curing the reactive liquid resin at a temperature 10° C. or more lower than the boiling point of the volatile liquid; and a step of evaporating the volatile liquid by heating the molded body, in which these steps are performed sequentially.