公开(公告)号：US10596545B2

公开(公告)日：2020-03-24

申请号：US15321258

申请日：2015-06-11

Applicant: KOLON INDUSTRIES, INC.

Inventor： Tae Sang Lee ,  Eun Jeong Cho ,  Joon Young Yoon

IPC: B01J20/20 ,  B01D39/20 ,  D02J1/18 ,  D04H3/005 ,  D01F9/14 ,  D01D11/02 ,  D01F9/12 ,  B01D53/02 ,  B01J20/28 ,  D04H3/105 ,  D04H3/11

Abstract: A filament web type precursor fabric for an activated carbon fiber fabric is produced by (i) spreading precursor filaments for preparing activated carbon fiber in a web state; and (ii) punching the precursor filaments for preparing activated carbon fiber spread in a web state to entangle the precursor filaments for preparing activated carbon fiber with each other. The filament web type precursor fabric has a structure in which the precursor filaments for preparing activated carbon fiber are spread in a web form and entangled with each other, and has a weight per unit area ranging from 50 to 500 g/m2. An activated carbon fiber fabric manufactured by activating the filament web type precursor fabric contains yarns with improved and uniform durability and crystallinity, and an shows improved performance of forming microfine pores having a diameter of 1 to 2 nm.

公开(公告)号：US10703873B2

公开(公告)日：2020-07-07

申请号：US15512605

申请日：2015-09-23

Applicant: KOLON INDUSTRIES, INC.

Inventor： Jee Sung Yi ,  Hyun Chul Lee ,  Joon Young Yoon ,  Eun Jeong Cho ,  Chung Seock Kang

IPC: B32B27/12 ,  C08J5/24 ,  C08K3/00 ,  H01M8/0228 ,  C08J5/10 ,  C08K3/04 ,  B32B37/18 ,  B32B27/06 ,  B32B37/06 ,  B32B37/10 ,  C08J5/04 ,  H01M8/0213 ,  H01M8/0221 ,  H01M8/0226 ,  H01M8/0206 ,  C08K3/08

Abstract: An intermediate material of a thermoplastic prepreg for a fuel cell separation plate comprises a hydrophobic thermoplastic resin film and a fiber base. The hydrophobic thermoplastic resin film has a degree of crystallization of 1 to 20%, a thickness of 3 to 50 μm, and (iii) a content of an electroconductive material of 1 to 20 wt. %. The film is laminated on at least one surface of the fiber base. The thermoplastic prepreg for a fuel cell separation plate is manufactured by pressurizing the thermoplastic prepreg intermediate material at a temperature higher than the melting point of the hydrophobic thermoplastic resin film. A fuel cell separation membrane manufactured using the thermoplastic prepreg intermediate material and thermoplastic prepreg is thin and light-weight, and have a good durability.

公开(公告)号：US10189217B2

公开(公告)日：2019-01-29

申请号：US15125684

申请日：2015-04-07

Applicant: KOLON INDUSTRIES, INC.

Inventor： Jee Sung Yi ,  Eun Jeong Cho ,  Joon Young Yoon ,  Hyun Chul Lee ,  Chung Seock Kang

IPC: C08J5/24 ,  B29B15/12 ,  B29C70/50 ,  B29K101/12 ,  B29K105/08

Abstract: A method for preparing a high quality thermoplastic prepreg, includes: laminating a thermoplastic resin film having a crystallization degree in a range of 1 to 20% on at least one surface of a matrix fiber; and heating the laminate to a higher temperature than a melting point of the film, then, pressing the same. The method uniformly impregnates a matrix fiber with a thermoplastic resin, has a short curing cycle in the formation, and involves no random modification in alignment of fibers in the matrix fiber due to a low crystallization degree of the impregnated thermoplastic resin, thereby increasing rigidity of a formed product and enabling reduction of thickness. Thus produced prepreg has a low weight variation per unit area.

公开(公告)号：US10923732B2

公开(公告)日：2021-02-16

申请号：US16340908

申请日：2017-12-19

Applicant: KOLON INDUSTRIES, INC.

Inventor： Joon Young Yoon ,  Da Kyoung Yong

IPC: H01M4/88 ,  D01F9/16 ,  D21H13/50 ,  D21H25/06 ,  D21H19/10 ,  D21H17/70 ,  H01M8/0245 ,  D21H17/48 ,  D21H25/04 ,  D21H19/84 ,  H01M8/0234 ,  D21H19/20

Abstract: A method for producing a roll-type gas diffusion layer is disclosed. The method includes preparing a carbon paper from carbon fiber chops having a low modulus of 10 to 100 Gpa; impregnating the prepared carbon paper with a phenol resin, and then carbonizing the resin-impregnated carbon paper at 1,800 to 2,400° C.; forming a microporous polytetrafluoroethylene resin layer on one side of the carbonized carbon paper, to prepare a gas diffusion layer sheet; and winding the prepared gas diffusion layer sheet on a roll. Since the roll of gas diffusion layer is formed using the carbon fiber chops having a low modulus, the gas diffusion layer exhibits excellent and uniform spreading properties. Therefore, sealing between the gas diffusion layer and the fuel cell separation plate is reliably secured without using a separate binder.