caa a22 4500 463223047 CHVBK 20180405153218.0 cr unu---uuuuu 170326e20070301xx s 000 0 eng 10.1007/s10853-006-1214-1 doi (NATIONALLICENCE)springer-10.1007/s10853-006-1214-1 A novel process for preparing expanded Polytetrafluoroethylene(ePTFE) micro-porous membrane through ePTFE/ePTFE co-stretching technique [Elektronische Daten] [Yuhai Guo, Jianyong Chen, Xinmin Hao, Jianchun Zhang, Xinxing Feng, Huapeng Zhang] Co-stretching processing technique was adopted in this paper for reducing ePTFE membrane pore size in hopes of bringing it the excellent retention property of very small particles. The ePTFE porous membrane were prepared from ePTFE powder through mechanical operations: extrusion, rolling, co-stretching of double-layer sheet in longitudinal direction, and transverse direction respectively and then thermosetting. The porous structures of ePTFE membrane were studied through SEM and Coulter Porometer. The results show that each layer of the double-layer ePTFE sheet can be joined together above 2.5MPa stress at 210°C, or 3.5MPa stress at above 190°C in longitudinal stretching operation. The transition interface between the each layer in the base sheet (after longitudinal stretching operation) and in the membrane (after thermosetting operation) was formed, which contributes to the reduction in the pore size of ePTFE membrane. Springer Science+Business Media, LLC, 2006 Guo Yuhai Zhejiang Sci-Tech University, 310018, Hangzhou, P.R. China aut Chen Jianyong Zhejiang Sci-Tech University, 310018, Hangzhou, P.R. China aut Hao Xinmin Zhejiang Sci-Tech University, 310018, Hangzhou, P.R. China aut Zhang Jianchun Zhejiang Sci-Tech University, 310018, Hangzhou, P.R. China aut Feng Xinxing Zhejiang Sci-Tech University, 310018, Hangzhou, P.R. China aut Zhang Huapeng Zhejiang Sci-Tech University, 310018, Hangzhou, P.R. China aut Journal of Materials Science Kluwer Academic Publishers-Plenum Publishers; http://www.springer-ny.com 42/6(2007-03-01), 2081-2085 0022-2461 42:6<2081 2007 42 10853 https://doi.org/10.1007/s10853-006-1214-1 text/html Onlinezugriff via DOI 1 research-article jats NATIONALLICENCE 856 40 https://doi.org/10.1007/s10853-006-1214-1 text/html Onlinezugriff via DOI NATIONALLICENCE 700 1- Guo Yuhai Zhejiang Sci-Tech University, 310018, Hangzhou, P.R. China aut NATIONALLICENCE 700 1- Chen Jianyong Zhejiang Sci-Tech University, 310018, Hangzhou, P.R. China aut NATIONALLICENCE 700 1- Hao Xinmin Zhejiang Sci-Tech University, 310018, Hangzhou, P.R. China aut NATIONALLICENCE 700 1- Zhang Jianchun Zhejiang Sci-Tech University, 310018, Hangzhou, P.R. China aut NATIONALLICENCE 700 1- Feng Xinxing Zhejiang Sci-Tech University, 310018, Hangzhou, P.R. China aut NATIONALLICENCE 700 1- Zhang Huapeng Zhejiang Sci-Tech University, 310018, Hangzhou, P.R. China aut NATIONALLICENCE 773 0- Journal of Materials Science Kluwer Academic Publishers-Plenum Publishers; http://www.springer-ny.com 42/6(2007-03-01), 2081-2085 0022-2461 42:6<2081 2007 42 10853 Metadata rights reserved Springer special CC-BY-NC licence nationallicence BK010053 XK010053 XK010000 NATIONALLICENCE NATIONALLICENCE NL-springer