The invention belongs to the technical field of solar backsheets, and in particular relates to a high-barrier and hydrolysis-resistant solar cell backsheet and a preparation method thereof. The high-barrier and hydrolysis-resistant solar cell backsheet comprises a surface layer, an intermediate layer and a bottom layer arranged in sequence. The surface layer consists of the following components in weight percentage: 20–80% nylon-polyolefin graft, 0–50% polyolefin, 0–60% semi-aromatic nylon, 5–30% functional filler, and 0–15% auxiliary agent. The intermediate layer consists of the following components: 30–97% polyolefin, 0–30% nylon-polyolefin graft, 2–30% nano-flaky inorganic filler, 0–30% functional filler, and 0–15% auxiliary agent. The bottom layer consists of the following components: 20–70% polyolefin, 0–50% polyolefin elastomer, 5–30% functional filler, and 0–15% auxiliary agent. The invention uses nylon-polyolefin graft and semi-aromatic nylon as main components of the surface layer for good hydrolysis resistance, and adds functional fillers to improve the water vapor barrier property of the surface layer. The nano-flaky inorganic fillers added in the intermediate layer can fill between functional fillers to form a good barrier.
Area Code: CN
Application Number: CN202010374674.3
