发明授权
- 专利标题: Process for production of separators for use in cells
- 专利标题(中): 用于生产细胞分离器的方法
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申请号: US308904申请日: 1981-10-05
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公开(公告)号: US4376794A公开(公告)日: 1983-03-15
- 发明人: Sueo Machi , Isao Ishigaki , Takanobu Sugo , Kazuo Murata , Shiro Tanso , Keizi Senoo
- 申请人: Sueo Machi , Isao Ishigaki , Takanobu Sugo , Kazuo Murata , Shiro Tanso , Keizi Senoo
- 申请人地址: JPX Tokyo JPX Osaka
- 专利权人: Japan Atomic Energy Research Inst.,Yuasa Battery Co., Ltd.
- 当前专利权人: Japan Atomic Energy Research Inst.,Yuasa Battery Co., Ltd.
- 当前专利权人地址: JPX Tokyo JPX Osaka
- 优先权: JPX54-11982 19790205; JPX54-11984 19790205; JPX54-11986 19790205; JPX54-11988 19790205
- 主分类号: C08F255/02
- IPC分类号: C08F255/02 ; H01M2/16 ; B05D3/06
摘要:
A novel process for the production of a separator for use in a cell to prevent the short-circuiting of positive active material and negative active material comprises irradiating a polyolefin film 150 .mu.m or less thick with ionizing radiation at a dose rate of 5.times.10.sup.4 -10.sup.7 rads/sec. to give a total dose of 1 Mrad or more, contacting the irradiated film with an aqueous solution of a terminally unsaturated monomer such as acrylic acid, methacrylic acid and the like at a temperature of 10.degree. C.-60.degree. C. to thereby cause grafting of the monomer onto the polyolefin film before the grafted polymer film is treated with an aqueous alkaline solution to finally obtain the separator for use in a cell, which is substantially improved in that it shows low electrical resistance and is excellent both in its acid resistance and mechanical strength.