Degradable environment-friendly plastic and preparing method thereof

Abstract

The invention relates to a degradable environment-friendly plastic prepared from the following raw materials in parts by weight: 53-90 parts of film level polyethylene, 48-85 parts of microcrystalline cellulose, 48-85 parts of thermoplastic starch, 45-90 parts of ethylene and acrylic copolymer, 45-90 parts of polyvinyl alcohol, 42-70 parts of film level polylactic acid, 36-65 parts of polyhydroxyalkanoate, 36-65 parts of triphenyl phosphite, 20-30 parts of plasticizer, 15-30 parts of xylogen, and 12-30 parts of vegetable dyes. The invention further discloses a preparing method of the degradable environment-friendly plastic. A plastic product manufactured by the method can be self-degraded, cannot pollute the environment or damage a soil structure, and is a true green plastic. The plastic product has good flexibility, oil resistant property, and heat sealability. The added vegetable dyes not only have a coloring effect, but also have a certain antibacterial property.

Description

technical field [0001] The invention belongs to the technical field of plastics, and in particular relates to a degradable environment-friendly plastic and a preparation method thereof. Background technique [0002] As we all know, the plastic bag made of plastic film is light, thin, impermeable, strong, and low in cost. It is a good packaging material. The advantages of light weight, high strength, stable chemical properties and low cost have been widely developed in many fields. However, because the used waste plastic bags are not easy to recycle, especially not easy to degrade, most of them are generally disposed of as solid waste, resulting in air pollution. The formation of pollutants such as acid rain has become more and more serious to the pollution of the natural environment, causing serious harm to our lives. [0003] In order to reduce the pollution of plastic films to the environment, people have developed some degradable and environmentally friendly plastic film...

AI Technical Summary

Problems solved by technology

However, the processing performance of this degradable and environmentally friendly plastic film is not good, and the physical properties and appearance of the plastic film produced are poor; The environment is either placed in a closed garbage disposal system or exposed to a natural environment with unstable conditions. It is difficult to ensure the fixed conditions required for the degradation of this plastic film. In most cases, these degradable plastics, regardless of Whether it is in the garbage disposal system or in the natural environment, it cannot be degraded well due to limited conditions