Silk-novolac-epoxy-mixed full-degradation food bag and preparing method thereof

Abstract

The invention discloses a silk-novolac-epoxy-mixed full-degradation food bag and a preparing method thereof. The silk-novolac-epoxy-mixed full-degradation food bag is prepared from, by weight, 50-60 parts of phenolic 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 silk, 2-3 parts of gelatin, 1-2 parts of magnesium stearate, 13-15 parts of acetyl citric acid three butyl ester, 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 product is produced with a safe formula, and can be used for making a food packaging bag and the like, and the product is large in strength, resistant to water and oil and durable; meanwhile, large-scale industrial production can be achieved, and the food bag and the preparing method are easy to grasp and convenient to popularize; a wasted product can be automatically decomposed under the effects of oxygen enrichment and microorganisms, carbon dioxide and water are automatically generated, and ecological environmental protection is achieved.

Description

technical field [0001] The invention relates to the technical field of plastic films, in particular to a silk-phenolic epoxy resin blended fully degradable food 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 silk materials to prepare degradable packaging films has become a researc...

AI Technical Summary

Problems solved by technology

However, while silk 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 too hydrophilic and has poor compatibility 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 silk plastics in the process of industrialization

Phenolic resin is a widely used high molecular polymer, its performance is between plastic and rubber, it contains a large number of polar group 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, and also has certain biodegradability, 6 under the condition of bacteria in wet environment It can be completely decomposed into water and carbon dioxide within a 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.