Dense articles formed tetrafluoroethylene core shell copolymers and methods of making the same |
|||||||
| 申请号 | US15478817 | 申请日 | 2017-04-04 | 公开(公告)号 | US09988506B2 | 公开(公告)日 | 2018-06-05 |
| 申请人 | W. L. Gore & Associates, Inc.; W. L. Gore & Associates GmbH; | 发明人 | Lawrence A. Ford; Michael E. Kennedy; Shaofeng Ran; Todd S. Sayler; Gregory J. Shafer; | ||||
| 摘要 | A tetrafluoroethylene (TFE) copolymer film having a first endotherm between about 50° C. and about 300° C., a second endotherm between about 320° C. and about 350° C., and a third endotherm between about 350° C. and about 400° C. is provided. In exemplary embodiments, the third endotherm is approximately 380° C. In some embodiments, the second endotherm is between about 320° C. and about 330° C. or between about 330° C. and about 350° C. TFE copolymer films have a methane permeability less than about 20 μg*micron/cm2/min. In addition, the dense articles have a void volume of less than about 20%. Methods for dense articles from core shell tetrafluoroethylene copolymers are also provided. The dense articles exhibit improved physical and mechanical properties such as adhesion and barrier properties. | ||||||
| 权利要求 | |||||||
| 说明书全文 | |||||||
QQ群二维码
意见反馈
意见反馈