| abstract |
The present invention provides a kind of polytetrafluoroethylene (PTFE) separation materials, have the pore structure of three-dimensional connection, it is characterised in that: have transforaminal on the stem of hole；Transforaminal aperture is less than 200nm not less than 100nm.The polytetrafluoroethylene material is invented with special microstructure, there is stable and firm fibre morphology and transforaminal structure, the persistence of separating property is good, and the service phase of material is long. |