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Title:
A POLYTETRAFLUOROETHYLENE FIBER FILM
Document Type and Number:
WIPO Patent Application WO/2017/080476
Kind Code:
A1
Abstract:
A polytetrafluoroethylene (PTFE) fiber membrane, comprising a PTFE material body, wherein the PTFE is in the form of fibers > 200 nm and ≤ 2000 nm in diameter, the body is provided with pore spaces between 10 nm and 2000 nm in diameter, and pore walls are formed around the pore spaces in a three-dimensional space, where the pore spaces are evenly distributed and interconnected in all three dimensions. The pore spaces being evenly distributed is defined herein as each pore space being evenly distributed over the porous material in an arbitrary unit volume. Porosity is 80% or greater, tensile strength is higher than 25 N/mm2, and water pressure resistance is higher than 4 kg/cm2. The porous distribution uniformity of a porous material and the multi-level structure thereof are measured at the scale of a small unit volume, thus ensuring the uniformity and consistency in every property of the porous material.

Inventors:
YE, Lei (No.9 Qinye Road, Yubei, Chongqing 0, 401120, CN)
Application Number:
CN2016/105278
Publication Date:
May 18, 2017
Filing Date:
November 10, 2016
Export Citation:
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Assignee:
CHONGQING RUNZE PHARMACEUTICAL COMPANY LIMITED. (No.9 Qinye Road, Yubei, Chongqing 0, 401120, CN)
International Classes:
B01D71/36
Foreign References:
CN104998556A2015-10-28
CN104968422A2015-10-07
CN101530750A2009-09-16
CN104114265A2014-10-22
CN102941025A2013-02-27
Attorney, Agent or Firm:
CHONGQING HONGXU PATENT AGENCY CO., LTD. (7-1 Unit 1, Building 16 SUNAC Trade Era,No.18 Qixia Road, Liangjiang New Area, Chongqing 0, 401120, CN)
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