The invention belongs to the technical field of photovoltaic modules, and particularly relates to a low-acid white EVA photovoltaic packaging
adhesive film and a preparation method thereof.The low-acid white EVA photovoltaic packaging
adhesive film is prepared from 100 parts of EVA resin, 5-10 parts of
titanium dioxide, 1-5 parts of a composite
acid inhibitor, 0.5-1.0 part of a
peroxide cross-linking agent, 0.3-1.0 part of an assistant cross-linking agent, 0.2-0.6 part of a
coupling agent, 0.1-0.5 part of an
antioxidant and 0-0.5 part of an
ultraviolet absorbent, the composite
acid inhibitor is prepared by mixing an amphiphilic
polymer, an alkaline
metal compound, a
carbodiimide compound and a macromolecular
coupling agent in proportion and granulating. According to the low-acid white EVA photovoltaic packaging
adhesive film disclosed by the invention, the composite
acid inhibitor is added, so that not only can the
power loss of a component caused by
water vapor erosion be solved, but also free
acetic acid generated in the long-term aging process of EVA can be effectively neutralized, the
corrosion of the packaging adhesive film to a battery piece, a
bus bar and a
metal frame is effectively relieved, and the service life of the component is prolonged.