Starch-polyethylene resin blended fully-degradable garbage bag and production method thereof

Abstract

The invention discloses a starch-polyethylene resin blended fully-degradable garbage bag and a production method thereof. The garbage bag comprises, by weight, 50-60 parts of polyethylene resin, 8-15 parts of calcium carbonate, 1-4 parts of nanometer titanium dioxide, 10-20 parts of benzoin ethyl ether, 7-9 parts of nanometer montmorillonite, 1.2-1.4 parts of tetrabutyl titanate, 12-14 parts of ramie bones, 60-65 parts of corn starch, 2-3 parts of gelatin, 1-2 parts of magnesium stearate, 13-15 parts of acetyl tributyl citrate, 1-1.5 parts of 2,6-di-tert-butyl-4-methylphenol, 4-6 parts of 3-hydroxybenzoic acid, 1-2 parts of lauryl sulfate and 4-6 parts of plant saponin. The garbage bag is produced according to a safe formula, can be used for manufacturing food packaging bags, and has the advantages of realization of large strength, good water resistance, good oil resistance and good durability in use, facilitation of realization of large-scale industrial production, easiness in knowing, and convenience in promotion; and the garbage bag automatically decomposes under the action of rich oxygen and microbes after being wasted in order to finally generate carbon dioxide and water, so the garbage bag is ecologic and environmentally-friendly.

Description

technical field [0001] The invention relates to the technical field of plastic films, in particular to a starch-polyethylene resin blended fully degradable garbage bag and a preparation method thereof. Background technique [0002] In recent years, due to the increasingly serious "white pollution" caused by waste plastics that are difficult to degrade, it has attracted widespread attention from all over the world. Countries around the world have successively issued relevant laws and regulations restricting or prohibiting the use of non-degradable plastic packaging. On the other hand, because petroleum, the raw material for making traditional plastics, is a non-renewable resource, it will be exhausted with the massive use of human beings. Therefore, it is imminent to develop environmentally friendly plastics that use renewable resources as raw materials and are degradable. [0003] The use of biodegradable starch materials to prepare degradable packaging films has become a re...

AI Technical Summary

Problems solved by technology

However, while starch improves the degradability of plastics, on the one hand, it will cause a decrease in its physical and mechanical properties, making it difficult to process. On the other hand, it is also too hydrophilic, which is not compatible with most general-purpose resins. Poor, resulting in a significant decline in the mechanical properties of the film, poor water resistance, thus hindering the wide application of starch plastics in the process of industrialization

Polyethylene resin is a widely used high molecular polymer, its performance is between plastic and rubber, it contains a large number of polar hydroxyl groups, its toxicity is very low, its molecular chain structure is symmetrical and regular, and it has unique strong adhesion, Film flexibility, smoothness, oil resistance, solvent resistance, protective colloid, gas barrier and water resistance after special treatment, but also has a certain degree of biodegradability, in the presence of bacteria in a wet environment 6 It can be completely decomposed into water and carbon dioxide within one month. It is a completely biodegradable material, but the degradation process has high requirements on the degradation environment, so the degradation rate is still relatively slow.