A Study of Bi-Axial Stretching Process for the PTFE Membrane (II)

이축연신 PTFE 막 제조 공정에 관한 연구 (II)

  • Published : 2007.09.29


In the performance test of polytetrafluoroethylene (PTFE) membrane, melting temperature and crystallinity were $344.1^{\circ}C$ and 42.5%, respectively, according to TGA and DSC analysis. These values were similar to those of commercially available GE Osmonics PTFE membrane. The average of pore size was observed $0.716{\mu}m$ and the average flow rate was 1.570 LMH. These are slightly higher values than those of GE Osmonics sample. The filtering efficiency rate was 30.5%.


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