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公开(公告)号：US4178248A
公开(公告)日：1979-12-11
申请号：US847584
申请日：1977-11-01
申请人： Mark C. Porter , Wayne P. Olson
发明人： Mark C. Porter , Wayne P. Olson
CPC分类号： B01D29/17
摘要： A microporous filter having pleated filter cartridge is provided with inlet and bypass ports for establishing tangential flow across outside boundary of cartridge inlet side resulting in slow clogging operation.
摘要翻译： 具有褶皱过滤器滤芯的微孔过滤器设置有入口和旁路端口，用于建立穿过料盒入口侧的边界的切向流动，导致缓慢的堵塞操作。
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公开(公告)号：US4196070A
公开(公告)日：1980-04-01
申请号：US859559
申请日：1977-12-12
申请人： Kwang C. Chao , Mark C. Porter
发明人： Kwang C. Chao , Mark C. Porter
CPC分类号： B01D71/32 , B01D67/003 , C08J9/26 , C25B13/08 , H01M2/1653 , C08J2327/12
摘要： A method for forming a microporous sheet of fluorocarbon polymer (e.g., polytetrafluoroethylene). An aqueous dispersion of polytetrafluoroethylene which includes a dissolved water-soluble, crystallizable metallic organic salt, preferably sodium benzoate, is formed into a sheet. Water is evaporated from an exposed surface of the sheet to grow crystals of the organic salt dispersed throughout the sheet. Then, the sheet is sintered. After cooling, the salt crystals are leached from the sheet by dissolution in water to leave a porous structure suitable for such uses as a filtration membrane or as a separation barrier in batteries or electrolytic cells.
摘要翻译： 一种形成碳氟聚合物（例如聚四氟乙烯）微孔片的方法。 包含溶解的可溶于水的可结晶的金属有机盐，优选苯甲酸钠的聚四氟乙烯的水分散体形成为片材。 水从片材的暴露表面蒸发以生长分散在整个片材中的有机盐的晶体。 然后，将片材烧结。 冷却后，通过溶解在水中将盐晶体从片中浸出以留下适合于诸如过滤膜或电池或电解槽中的隔离屏障的用途的多孔结构。
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