The invention provides a packaging
adhesive film and a preparation method and application thereof. The packaging
adhesive film comprises the following
raw material components: matrix resin, a cross-linking agent, an assistant cross-linking agent, a
silane coupling agent and a light stabilizer, the assistant cross-linking agent comprises a combination of an
isocyanate assistant cross-linking agent and an
acrylate assistant cross-linking agent; the
mass ratio of the
isocyanate assistant crosslinker to the
acrylate assistant crosslinker is 1 : (0.2-5). The preparation method comprises the following steps: mixing the matrix resin, the cross-linking agent, the assistant cross-linking agent, the
silane coupling agent and the light stabilizer as well as the optional filler, the
photoinitiator, the
silane coupling agent, the
ultraviolet absorber and the anti-PID aid, and extruding the mixture to obtain the packaging
adhesive film. When the packaging adhesive film is used for preparing the photovoltaic module, the proper crosslinking degree can be provided, the lamination temperature can be reduced, the lamination time can be shortened, and the problems of higher curing temperature and higher
energy consumption of the packaging adhesive film in the preparation process of the photovoltaic module can be solved.