Abstract: Ultraviolet radiation was chosen to treat the PP non-symmetric solid-liquid separation membrane and got the aging rule of the separation membrane at different temperatures. The separation membrane’s morphology, physical and mechanical properties and infiltration performance were studied. The results showed that the C=O stretching vibration was found in polypropylene membrane surface which was handled at 45 degrees celsius for 1 day and its surface was oxidized; after the membrane ,respectively, treated at 45 degrees celsius for 6 day and at 60 degrees celsius for 4 day, the separation membrane’s rupture strength retention rate were 2.28% and 5.81% and they had lost value in use, further the membrane surface’s hydrophilic disappeared and the water conductivity decreased rapidly.

Key words: PP separation membrane, UV, structure, performance