α-Al2O2/γ-Al2O2/Teflon AF2400 中空纤维油气分离膜的制备及性能研究.

Rapid detection of dissolved gas in transformer insulation oil can promptly analyze the types and harmfulness of transformer faults. However, the separation efficiency of traditional oil-gas separation membranes is low, which cannot meet the latest standard and manual inspection requirements. In order to improve separation efficiency,the hollow fiber composite membranes of α-Al2O3/γ-Al2O3/Teflon AF2400 were prepared, and the effects of γ-Al2O3 and annealing temperature on the interfacial properties of the composite membranes were studied. It was found that the addition of γ-Al2O3 could effectively improve the interfacial properties of organic/ceramic composite membrane. The interfacial strength of the composite film could be further improved by annealing at 330 ℃. The hollow fiber membrane had lower gas transmission resistance, which led to one hour balance time for all 7 kinds of insulation oil dissolved gases and laid the foundation for rapid detection of dissolved gases in transformer insulating oil. [ABSTRACT FROM AUTHOR]