Green plastic bag with double biodegradation and photodegradation and manufacturing method thereof

Abstract

The invention discloses a green plastic bag with double biodegradation and photodegradation and a manufacturing method thereof, which relate to the technical field of plastic thin films. The green plastic bag is prepared from the following raw materials in parts by weight: 20 to 30 parts of polyethylene, 20 to 30 parts of calcium carbonate, 15 to 25 parts of microcrystalline starch, 10 to 20 partsof xyloglucan, 10 to 20 parts of chitosan, 2 to 6 parts of diphenylcyclopropenone, 1 to 5 parts of iron dithiocarbamate, 1 to 5 parts of titanate coupling agent, 1 to 3 parts of nanometer titania, 1to 3 parts of simethicone, 2 to 5 parts of sorbitol, 2 to 4 parts of phthalic acid, 2 to 6 parts of sodium carboxymethylcellulose, 2 to 8 parts of oxidized polyethlene wax, 2 to 8 parts of mannitol stearate, and 2 to 8 parts of acetic acid. The green plastic bag provided by the invention has synergism, cooperation and coherent functions between biodegradation and photodegradation, and the photodegradation and oxide degradation can be carried out at the same time and mutually promoted; biodegradation easily occurs after photodegradation, meanwhile, the water resistance, the strength, the heat machinability and the service life are improved, and a comprehensive performance is further improved.

Description

technical field [0001] The invention relates to the technical field of plastic films, in particular to an environmentally friendly plastic bag with dual biodegradation and photodegradation and a manufacturing method thereof. Background technique [0002] With the increasing use of plastics, a large amount of plastic waste is generated. Because it is difficult to degrade (ordinary plastics can be completely degraded in 200-400 years), white pollution has become a worldwide public hazard that endangers the social environment and seriously hinders the sustainable development of social economy and the environment. In order to solve this serious social problem, more and more scholars advocate the development and application of degradable plastics, and regard it as an ideal way to solve this world problem. [0003] At present, the degradable plastics researched in the world can be divided into four categories, photodegradable plastics, biodegradable plastics, chemically degradabl...

AI Technical Summary

Problems solved by technology

[0004] In the prior art, in order to solve the problem of white pollution, photobiodegradable plastics have been produced, but the degradation effect is average and the degradation speed is slow. At the same time, photobiodegradable plastics have defects such as poor oxidation resistance, poor thermal stability, and short service life. It is easy to oxidize in an environment with high temperature, and it is easy to deteriorate when used in a high temperature environment.