发明名称 |
DIFFUSION FILM, ELECTRODE HAVING THE DIFFUSION FILM, AND PROCESS FOR PRODUCING DIFFUSION FILM |
摘要 |
A diffusion membrane contains uncalcined polytetrafluoroethylene (PTFE), calcined PTFE and a conductive substance. An electrode has the diffusion layer (membrane) and a catalyst layer disposed thereon. A process for producing diffusion membranes comprises dispersing uncalcined PTFE, calcined PTFE and a conductive substance in a dispersion medium, removing the dispersion medium, adding a liquid lubricant followed by kneading, compressing the resultant kneaded product (preferably a rod-shaped preform) to expand the same into a membrane, and removing the liquid lubricant. The diffusion membrane preferably contains 1 to 30 wt % of the uncalcined PTFE and 5 to 30 wt % of the calcined PTFE. The conductive substance is desirably a combination of graphite and carbon black. The diffusion membrane is free from local variation in properties, has suitable mass producibility and can be produced inexpensively. |
申请公布号 |
AU2002366467(A1) |
申请公布日期 |
2003.06.30 |
申请号 |
AU20020366467 |
申请日期 |
2002.12.13 |
申请人 |
NIPPON VALQUA INDUSTRIES, LTD. |
发明人 |
MICHINAO HAYASHI;TOHRU SUGITANI;YOSHITAKA ASANO |
分类号 |
C08J5/22;H01B1/24;H01G11/22;H01G11/26;H01G11/38;H01G11/86;H01M4/86;H01M4/88;H01M4/96;H01M8/02;H01M8/10 |
主分类号 |
C08J5/22 |
代理机构 |
|
代理人 |
|
主权项 |
|
地址 |
|