Plastic bag capable of being quickly naturally degraded

Abstract

The invention provides a plastic bag capable of being quickly naturally degraded. The plastic bag is prepared from, by weight, 30-40 parts of carboxy-modified polyvinyl alcohol, 20-25 parts of modified starch, 15-20 parts of waste plant fibers, 8-12 parts of polyacrylamide, 10-15 parts of aluminium polychlorid, 30-40 parts of sulfonated bisphenol-based polyether sulphone, 10-15 parts of a nanometer immobilized lignin degrading enzyme catalyst, 7-10 parts of nanometer microencapsulated benzene compound degrading bacteria and 5-10 parts of EDTA. While the plastic bag capable of being quickly naturally degraded is quickly degraded, absorption bacteria are gathered on plastic bag degradation residues, while degradation of the plastic bag is further accelerated, heavy metal ions, macromolecularorganic matter and trace organic pollutants in soil or water can be cleared away, it is achieved that the plastic bag is quickly degraded, a natural environment beneficial for growth of crops or aquaculture farm products is formed, and no secondary pollution is caused.

Description

technical field [0001] The application belongs to the field of plastics, in particular to a rapidly and naturally degradable plastic bag. Background technique [0002] As a new type of material, plastic products have the advantages of light weight, waterproof, durable, mature production technology, and low cost. They are widely used all over the world and show an increasing trend year by year. But the white pollution harm it causes is more serious. According to the statistical analysis of the Professional Committee of Plastic Recycling of the China Plastics Association, China uses 1 billion plastic bags every day to buy vegetables, and the amount of other plastic bags is more than 2 billion per day, which is equivalent to at least 2 billion per day for each Chinese. plastic bag. Since the "Plastic Restriction Order" was promulgated in June 2008, all large, medium and small cities across the country have strictly implemented it. The environmental protection requirements for...

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Problems solved by technology

[0004] Chinese patent 201611150729.2 discloses a new type of degradable plastic bag material. In its technical solution, styrene-ethylene / butylene-styrene copolymer is used, and plasticizers, stabilizers and other substances are used. Although the product is non-toxic, It can be degraded naturally, but after degradation, the benzene-containing organic substances in its production components and the macromolecular organic substances and trace organic substances produced by the degradation of other polymer materials will cause secondary pollution to water bodies or soil, which is not conducive to animals or cultivation in water bodies The growth of crops is easy to cause harm to the human body after eating agricultural products, and the degraded plastic bags are likely to cause soil compaction, which is not conducive to the growth of crops

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