Starch-novolac epoxy resin blended fully-degradable zip lock bag and preparation method thereof

Abstract

The invention discloses a starch-novolac epoxy resin blended fully-degradable zip lock bag and a preparation method thereof. The starch-novolac epoxy resin blended fully-degradable zip lock bag is prepared from, by weight, 50-60 parts of novolac epoxy resin, 8-15 parts of calcium carbonate, 1-4 parts of nanometer titania, 10-20 parts of benzoin ethyl ether, 7-9 parts of nano-montmorillonite, 1.2-1.4 parts of tetrabutyl titanate, 12-14 parts of ramie sticks, 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-ditert-butyl-4-methylphenol, 4-6 parts of 3-hydroxybenzoic acid, 1-2 parts of laurinol sulfate and 4-6 parts of plant saponin. The product is produced according to a safe formula, and can be used for manufacturing food packaging bags and the like; during use, the product is high in strength, resistant to water and oil and durable, large-scale industrial production can be achieved, grasping is easy, popularization is convenient, the waste product can be automatically degraded under the effects of rich oxygen and microorganisms, carbon dioxide and water are finally generated, and the starch-novolac epoxy resin blended fully-degradable zip lock bag is ecological and environmentally friendly.

Description

technical field [0001] The invention relates to the technical field of plastic films, in particular to a starch-phenolic epoxy resin blended fully degradable compact 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 ...

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

Novolac epoxy 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 properties and water resistance after special treatment, and also has a certain degree of biodegradability, in the presence of bacteria in a wet environment It can be completely decomposed into water and carbon dioxide within 6 months. 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.