Anti-falling high-toughness polyethylene film and preparation method thereof

The invention provides an anti-falling high-toughness polyethylene film. The anti-falling high-toughness polyethylene film comprises the following components in parts by mass: 50-80 parts of polyethylene; 10 to 30 parts of polyvinyl alcohol; 1 to 10 parts of polypropylene; 1-10 parts of modified silicon dioxide; 1-10 parts of modified glass fiber; 1-10 parts of fatty glyceride; 0.5 to 5 parts of a silane coupling agent; 0.1 to 1 part of an initiator; 0.5-5 parts of an auxiliary agent; wherein the modified silicon dioxide is polyether modified silicon dioxide; the modified glass fibers are surface hydroxylated glass fibers. The modified silicon dioxide and the modified glass fiber are high-strength and high-modulus materials, and the modified silicon dioxide and the modified glass fiber are added into the polyethylene film, so that the mechanical property and the thermal stability of the polyethylene film can be improved; and on the other hand, the modified silicon dioxide, the modified glass fiber and polyvin