Anti-fogging and non-dropping film and preparation method thereof

Abstract

The invention provides an anti-fogging and non-dropping film. The anti-fogging and non-dropping film comprises the following components in parts by weight: 70 to 200 parts of LLDPE (Linear Low Density Polyethylene), 15 to 50 parts of LDPE (Low-Density Polyethylene), 10 to 30 parts of EVA (Ethylene-vinyl Acetate), 20 to 50 parts of DOP (Dioctyl-Phthalate), 15 to 30 parts of BBP (Butyl Benzyl Phthalate), 0.5 to 2 parts of dibutyl tin dialurate, 3 to 7 parts of 2-ethylhexyl ester of epoxy fatty acids, 4 to 8 parts of tricresyl phosphate, 1.5 to 4 parts of glyceryl monolaurate, 1 to 6 parts of triphenyl phosphate, 0.2 to 0.8 part of ultraviolet light absorber, 0.5 to 0.9 part of calcium carbonate, 1 to 5 parts of cadmium stearate, 2 to 8 parts of barium stearate, and 0.2 to 0.7 part of sorbitan monostearate. The preparation method comprises the following steps of: drying LLDPE, LDPE and EVA under vacuum; adding other components; performing film blowing through a horizontal extruding and blowing method by utilizing a single-screw extruding film blowing device, thus obtaining the anti-fogging and non-dropping film. The anti-fogging and non-dropping film shows remarkable advantages that water on the surface of the film can flow into the soil along the surface of the film, thus moisture in the air in a greenhouse is reduced, and the anti-fogging effect is realized.

Description

technical field [0001] The invention belongs to the technical field of plastic films, and in particular relates to an anti-fog and drip-free film and a preparation method thereof. Background technique [0002] The most important use of polyethylene non-drip film in agriculture is as a greenhouse film. Plastic greenhouses play a vital role in the early sowing and ripening of vegetables and fruits. It provides fresh vegetables throughout the year and makes a major contribution to meeting people's living needs. Polyethylene non-drip film is made by mixing a certain proportion of linear low-density polyethylene (LLDPE), a certain proportion of low-density polyethylene (LDPE), and a certain proportion of non-drip masterbatch by extrusion blow molding. The main function of the plastic greenhouse is to increase the temperature inside the greenhouse. In addition to the low thermal conductivity of the plastic film itself as a polymer material, which can reduce the heat loss in the ...

AI Technical Summary

Problems solved by technology

At present, the non-drip agent in the polyethylene non-drip film masterbatch used by most agricultural mulch film manufacturers has only anti-drip effect, which leads to a large fog in the shed, which makes flowering vegetables such as cucumbers, watermelons, and eggplants susceptible to diseases. , affecting yield and harvest