公开(公告)号：US20240308179A1

公开(公告)日：2024-09-19

申请号：US18268576

申请日：2021-12-20

Applicant: POSCO Co., Ltd

Inventor： Jong-Tae Park ,  Jungwoo Kim ,  Bongwoo Ha ,  Donggyu Lee

IPC: B32B7/12 ,  B32B15/04 ,  B32B15/18 ,  B32B37/12

CPC classification number: B32B7/12 ,  B32B15/043 ,  B32B15/18 ,  B32B37/1284 ,  B32B2255/06 ,  B32B2255/20 ,  B32B2255/26 ,  B32B2264/102 ,  B32B2307/54 ,  B32B2307/542 ,  B32B2307/748 ,  B32B2309/02 ,  B32B2311/30

Abstract: The present invention relates to a self-bonding electrical steel sheet and a laminate comprising same, the self-bonding electrical steel sheet comprising an electrical steel sheet and a self-bonding layer positioned on the electrical steel sheet, wherein the amount of inorganic material in the self-bonding layer is 5-35 wt % and the tensile/shear strength of the laminate is 7.5-20 N/mm2.

公开(公告)号：US20240051269A1

公开(公告)日：2024-02-15

申请号：US18268269

申请日：2021-12-20

Applicant: POSCO Co., Ltd

Inventor： Jungwoo Kim ,  Bongwoo Ha ,  Donggyu Lee ,  Taeyoung No ,  Gyeongryeol Park

IPC: B32B15/18 ,  B32B15/04 ,  B32B7/12 ,  B32B37/12 ,  B32B37/18 ,  H02K1/02

CPC classification number: B32B15/18 ,  B32B15/043 ,  B32B7/12 ,  B32B37/12 ,  B32B37/1284 ,  B32B37/18 ,  H02K1/02 ,  B32B2255/26 ,  B32B2255/06 ,  B32B2307/748 ,  B32B2309/12 ,  B32B2311/30 ,  B32B2457/00 ,  B32B2037/1253 ,  B32B2305/72 ,  B32B2307/206

Abstract: The present invention relates to an electrical steel sheet laminate, and provided is an electrical steel sheet laminate comprising: a plurality of electrical steel sheets; and polymer adhesive layers positioned between the electrical steel sheets, wherein the coating thickness of the polymer adhesive layers is 1.8-5.4 μm, the space factor of the laminate is 95.8-98.5%, and the following mathematical formula 1 is satisfied. [Mathematical Formula 1] 172.4≤space factor (%)×thickness (μm)≤531.


172.4≤space factor (%)×thickness(μm)≤531  [Equation 1]

公开(公告)号：US20240301237A1

公开(公告)日：2024-09-12

申请号：US18268806

申请日：2021-12-16

Applicant: POSCO Co., Ltd

Inventor： Bongwoo Ha ,  Jungwoo Kim ,  Kang Seo ,  Daegyu Kang ,  Taeyoung No ,  Donggyu Lee ,  Gyeongryeol Park

IPC: C09D175/08 ,  B32B7/12 ,  B32B15/04 ,  B32B15/18 ,  C08G18/48 ,  C08G18/72 ,  C08G18/73 ,  C08G18/76 ,  C08K3/04 ,  C08K3/22 ,  C08K3/36 ,  C09D7/61 ,  H01F1/147

CPC classification number: C09D175/08 ,  B32B7/12 ,  B32B15/043 ,  B32B15/18 ,  C08G18/4825 ,  C08G18/722 ,  C08G18/73 ,  C08G18/7614 ,  C08G18/7671 ,  C08K3/04 ,  C08K3/22 ,  C08K3/36 ,  C09D7/61 ,  H01F1/14791 ,  B32B2255/06 ,  B32B2255/26 ,  B32B2264/1021 ,  B32B2264/1022 ,  B32B2264/108 ,  B32B2307/748 ,  C08K2003/2241

Abstract: The present invention relates to an electrical steel sheet and a laminate thereof, and provided is an electrical steel sheet including: an electrical steel sheet, and a polyurethane coating layer positioned on the electrical steel shoot, in which the rebound clastic modulus of the polyurethane coating layer is 5% to 30%.

公开(公告)号：US20250059648A1

公开(公告)日：2025-02-20

申请号：US18719726

申请日：2022-12-16

Applicant: POSCO CO., LTD

Inventor： Jungwoo Kim ,  Bongwoo Ha ,  Donggyu Lee ,  Taeyoung No

IPC: C23C22/20 ,  C23C22/82

Abstract: An insulating coating composition for an electrical steel sheet, according to an embodiment of the present invention, comprises, on the basis of 100 wt % of a total composition: 10 to 50 wt % of a first composition including first inorganic material particles and second inorganic material particles; 10 to 50 wt % of a second composition including a metal phosphate; and 20 to 60 wt % of an organic/inorganic composite in which inorganic nano particles are substituted in an organic resin.