发明名称 |
Method of making a microporous material |
摘要 |
A method for producing a microporous material comprising the steps of: providing an ultrahigh molecular weight polyethylene (UHMWPE); providing a filler; providing a processing plasticizer; adding the filler to the UHMWPE in a mixture being in the range of from about 1:9 to about 15:1 filler to UHMWPE by weight; adding the processing plasticizer to the mixture; extruding the mixture to form a sheet from the mixture; calendering the sheet; extracting the processing plasticizer from the sheet to produce a matrix comprising UHMWPE and the filler distributed throughout the matrix; stretching the microporous material in at least one direction to a stretch ratio of at least about 1.5 to produce a stretched microporous matrix; and subsequently calendering the stretched microporous matrix to produce a microporous material which exhibits improved physical and dimensional stability properties over the stretched microporous matrix.
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申请公布号 |
US7682536(B2) |
申请公布日期 |
2010.03.23 |
申请号 |
US20080199079 |
申请日期 |
2008.08.27 |
申请人 |
DARAMIC LLC |
发明人 |
MILLER ERIC H.;YARITZ JOSEPH G.;DEMEUSE MARK T.;WHEAR J. KEVIN |
分类号 |
B01D67/00;B29C67/20 |
主分类号 |
B01D67/00 |
代理机构 |
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代理人 |
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主权项 |
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地址 |
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