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

이축연신 PTFE 막 제조 공정에 관한 연구 (II)

  • Published : 2007.09.29

Abstract

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%.

이축 연신에 의한 폴리테트라플루오로에틸렌 (PTFE) 막을 제조하기 위한 성능평가 실험에서 TGA 및 DSC 측정결과 용융점은 $344.1^{\circ}C$로 비교 시료인 수입산 GE Osmonics PTFE 막과 비슷함을 보였으며 결정화도는 42.5%로 GE Osmonics PTFE 막 보다 조금 높게 나타났다. 기공의 평균크기는 $0.716{\mu}m$였으며, 평균유량은 1,579 LMH로 GE Osmonics 샘플에 비해 다소 높게 나타났다. 제거효율은 30.5%로 비교 시료보다 다소 낮음을 알 수 있었다.

Keywords

References

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