Environment-friendly degradable plastic bag

Abstract

The invention discloses an environment-friendly degradable plastic bag. The environment-friendly degradable plastic bag comprises the following components of 30-55 parts of low density polyethylene, 20-26 parts of polyvinyl alcohol resin, 3-5 parts of butantriol, 2-6 parts of photocoupler, 5-10 parts of a degradation accelerator, 2-7 parts of cellulose acetate, 1-10 parts of diatomite, 1-4 parts of a chelating agent, 2-5 parts of an emulsifying agent and 3-7 parts of a self-collapsing agent in parts by weight. The environment-friendly degradable plastic bag, disclosed by the invention, has theadvantages that cross-linking and gelation caused by thermal ageing in the plastic bag machining process can be prevented by adding the photocoupler and the chelating agent to a polyethylene molded plastic system in a synergistic manner, thermostability and oxidation resistance of the prepared plastic bag can be greatly improved; a plastifying effect can also be realized; and meanwhile, as the degradation accelerator is added to the material, the prepared plastic bag obtains excellent biological degradability.

Description

technical field [0001] The invention relates to an environment-friendly degradable plastic bag. Background technique [0002] Polyethylene (PE for short) is a thermoplastic resin obtained by polymerization of ethylene. Polyethylenes are crystalline thermoplastic resins whose chemical structure, molecular weight, degree of polymerization and other properties are largely dependent on the polymerization method used. Polyethylene is a typical thermoplastic, which is an odorless, tasteless, non-toxic, flammable white powder; polyethylene is easy to be photooxidized, thermally oxidized, and ozonized, and it is easy to degrade under the action of ultraviolet rays; polyethylene has good chemical stability. At room temperature, it can withstand dilute nitric acid, dilute sulfuric acid and any concentration of hydrochloric acid, hydrofluoric acid, phosphoric acid, formic acid, acetic acid, ammonia water, amines, hydrogen peroxide, sodium hydroxide, potassium hydroxide and other solut...