| abstract |
The invention discloses a kind of high partial discharge voltage solar cell backboard basement membrane and preparation method thereof, it is characterized in that：It is combined and is constituted with the B stratas ester film with hydrolysis function by the A stratas ester film with high partial discharge voltage function.By A stratas ester film and the mass ratio 400~900 of B strata ester films：100, after being melted respectively by extruder at 260 DEG C~290 DEG C, through resin melting distributor layering co-extrusion extrusion, the slab on 15 DEG C~25 DEG C cold drums, it is that the high partial discharge voltage solar cell backboard basement membrane that thickness is 100 μm~350 μm is made in 190 DEG C~230 DEG C thermal finalizations again through 2.9~3.5 times of longitudinal stretchings, 3.0~3.5 times of horizontal biaxial tensiones；The shelf depreciation voltage of the high partial discharge voltage solar cell backboard basement membrane of the present invention is 800V~1800V；It is shelf depreciation pressure, long-term resistance to ultraviolet etc. functional；Suitable for the manufacture of solar photovoltaic cell backplane material. |