Thermoplastic prepreg intermediate material for fuel cell separation plate and method for manufacturing thermoplastic prepreg for fuel cell separation plate by using same

Patent metadata

Field	Value
Publication number	US-2017298200-A1
Application number	US-201515512605-A
Country	US
Kind code	A1
Filing date	Sep 23, 2015
Priority date	Sep 29, 2014
Publication date	Oct 19, 2017
Grant date	—

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.

First claim

1 . A thermoplastic prepreg intermediate material for a fuel cell separation plate, characterized in that: a hydrophobic thermoplastic resin film, of which (i) a degree of crystallization is 1 to 20%, (ii) a thickness is 3 to 50 μm and (iii) a content of an electroconductive material is 1 to 20% by weight (‘wt. %’), is laminated on at least one surface of a fiber base.

2 . The thermoplastic prepreg intermediate material for a fuel cell separation plate according to claim 1 , wherein the electroconductive material is one selected from silver nanowire, carbon nanotube, graphene and carbon black.

3 . The thermoplastic prepreg intermediate material for a fuel cell separation plate according to claim 1 , wherein the degree of crystallization of the hydrophobic thermoplastic resin film is 3 to 12%.

4 . The thermoplastic prepreg intermediate material for a fuel cell separation plate according to claim 1 , wherein the thickness of the hydrophobic thermoplastic resin is 7 to 40 μm.

5 . The thermoplastic prepreg intermediate material for a fuel cell separation plate according to claim 1 , wherein a weight ratio of the fiber base:the hydrophobic thermoplastic resin film is 65 to 90 wt. %:10 to 35 wt. %

6 . The thermoplastic prepreg intermediate material for a fuel cell separation plate according to claim 1 , wherein the fiber base is a fiber sheet in which fibers on a filament are arranged in one direction.

7 . The thermoplastic prepreg intermediate material for a fuel cell separation plate according to claim 1 , wherein the hydrophobic thermoplastic resin film is one selected from a polypropylene resin film, polyester resin film, thermoplastic polyurethane film, polyethylene resin film, polybutylene terephthalate resin film, polyamide resin film, polyethylene terephthalate resin film, polyphenylene sulfide film, Teflon resin film and polyetherether ketone resin film.

8 . A method for manufacturing a thermoplastic prepreg for a fuel cell separation plate, comprising: laminating a hydrophobic thermoplastic resin film, of which (i) a degree of crystallization is 1 to 20%, (ii) a thickness is 3 to 50 μm and (iii) a content of an electroconductive material is 1 to 20 wt. %, on at least one surface of a fiber base to prepare a thermoplastic prepreg intermediate material for a fuel cell separation plate; and pressurizing the prepared thermoplastic prepreg intermediate material for a fuel cell separation plate at a temperature higher than a melting point of the hydrophobic thermoplastic resin film.

9 . The method for manufacturing a thermoplastic prepreg for a fuel cell separation plate according to claim 8 , the pressurizing process is performed with a pressure of 50 to 1,500 kgf/cm at a temperature 30 to 100° C. higher than the melting point of the hydrophobic thermoplastic resin.

Assignees

• Kolon Inc

Inventors

• Yi Jee Sung
• Lee Hyun Chul
• Yoon Joon Young
• Cho Eun Jeong
• Kang Chung Seock

Classifications

• C08J2367/02

  Polyesters derived from dicarboxylic acids and dihydroxy compounds; (C08J2367/06 takes precedence) · CPC title

• C08J2323/12

  Polypropene · CPC title

• B32B2309/105

  Thickness · CPC title

• B32B2398/20

  Thermoplastics · CPC title

• H01M8/0221 Primary

  Organic resins; Organic polymers · CPC title