发明授权
- 专利标题: METHOD FOR MANUFACTURING POLYETHYLENE POROUS FILM AND POLYETHYLENE POROUS FILM
- 专利标题(中): 制备聚乙烯多孔膜和聚乙烯多孔膜的方法
-
申请号: EP13833843.9申请日: 2013-08-16
-
公开(公告)号: EP2891677B1公开(公告)日: 2018-04-18
- 发明人: UEHARA, Hiroki , YAMANOBE, Takeshi , TANAKA, Hidekazu
- 申请人: National University Corporation Gunma University
- 申请人地址: 2 Aramaki-machi 4-chome Maebashi-shi, Gunma 371-8510 JP
- 专利权人: National University Corporation Gunma University
- 当前专利权人: National University Corporation Gunma University
- 当前专利权人地址: 2 Aramaki-machi 4-chome Maebashi-shi, Gunma 371-8510 JP
- 代理机构: Held, Stephan
- 优先权: JP2012189287 20120829
- 国际公布: WO2014034448 20140306
- 主分类号: C08J9/00
- IPC分类号: C08J9/00 ; B01D71/26 ; H01M2/16 ; B01D67/00 ; B32B27/08 ; B32B27/32 ; B32B3/26 ; H01M10/0525
摘要:
Disclosed is a polyethylene porous film having an average pore diameter of 200 nm or less, a specific surface area of 50 m 2 /g or more, and a porosity of 15% or more, each of which is measured by a mercury intrusion method at room temperature, the polyethylene porous film being obtained by forming pores only by drawing a film containing an ultrahigh molecular weight polyethylene having a viscosity average molecular weight of from 1 million to 15 million and a polyethylene having a weight average molecular weight of from 10,000 to 800,000 at a mass ratio of from 50:50 to 99:1. The polyethylene porous film is produced by molding a film using a mixture of the ultrahigh weight polyethylene and the polyethylene having a weight average molecular weight of from 10,000 to 800,000, biaxially drawing the film, then heat-treating and redrawing the film to form pores in the film.
公开/授权文献
信息查询