Agricultural insect killing and oxygen isolating environment-friendly degradable plastic film

Abstract

The invention provides an agricultural insect killing and oxygen isolating environment-friendly degradable plastic film. The agricultural insect killing and oxygen isolating environment-friendly degradable plastic film is prepared by coating both sides of a plastic film with an insecticide and comprises the following components in parts by weight: 40-60 parts of corn starch, 100 parts of low density polyethylene (LDPE), 20-40 parts of pulullan, 10-20 parts of polycarbonate, 2-4 parts of antioxidant, 0.5-1 part of ultraviolet absorber, 4.5-6.5 parts of cedar oil, 5-10 parts of polyethylene wax and 6-8 parts of composite filler. The film per m<2> is coated with 4-6g of insecticide slurry. The oxygen isolating degradable plastic film provided by the invention has the advantages and beneficial effects that the plastic film can be automatically decomposed under the actions of rich oxygen and microorganisms; the waste films can be completely decomposed and digested by microorganisms in the natural world to finally generate carbon dioxide and water; the oxygen isolating property of the plastic film can be improved by 40% compared with the oxygen isolating properties of LDPE films in the same thickness; a preparation method of the plastic film is simple in process and high in production efficiency, is easy to implement industrially and can be used for producing the plastic film by using a common plastic film blowing machine.

Description

technical field [0001] The invention belongs to the field of plastic film materials, in particular to an agricultural degradable insecticidal, environment-friendly, oxygen-insulating and degradable plastic film. Background technique [0002] With the vigorous development of the food and pharmaceutical industries, the demand for new oxygen barrier packaging materials is more urgent than ever. It is an important and urgent strategic task to develop and research new oxygen barrier materials for food and pharmaceutical packaging. At present, the environmental pollution of packaging materials has attracted great attention from all over the world, and realizing the environmental friendliness of packaging materials has become one of the most attractive and challenging directions of material science research. [0003] Biodegradable plastics are one of the effective ways to control the environmental pollution caused by plastic waste and buffer the contradiction of petroleum resources...

AI Technical Summary

Problems solved by technology

The third-generation product is a fully biodegradable plastic material obtained by extruding or injection molding thermoplastic starch, natural starch, amylose or high-amylose starch under high temperature, high pressure and high humidity conditions without adding polymers. research stage

Although the plastic film material with high starch content has good biodegradability, the mechanical properties of the film material are lacking, and the oxygen barrier property of the film is not good. When it is used in the packaging fields of food and medicine, it has different degrees of air permeability and seriously affects it. quality of packaging

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