High-temperature-resistant anti-photoaging degradable PE membrane and preparation method thereof

Abstract

The invention discloses a high-temperature-resistant anti-photoaging degradable PP membrane and a preparation method thereof. The PE membrane comprises the following components: PE, an antioxidant, an antioxidant aid, a light stabilizer, polyester fibers, silica gel powder, plant oil, butyl titanate, sorbic acid, hydroxypropyl starch and hydroxypropyl methyl cellulose. The preparation method comprises the following steps: adding PE, polyester fibers, silica gel powder, butyl titanate and hydroxypropyl methyl cellulose into a reaction kettle, and at the temperature of 180-200DEG C and under the condition of vacuum degree of 0.02-0.06MPa, stirring and reacting to obtain a mixture I, then adding the remaining components into the mixture I, stirring and evenly mixing, then extruding and pelletizing in a double-screw extruder to obtain master batches, finally extruding and performing membrane blowing to the master batches by adopting a plastic membrane blowing machine to obtain the high-temperature-resistant anti-photoaging degradable PE membrane. The PE membrane has excellent high temperature resistance, anti-photoaging and degradable properties, and the application range is extended.

Description

technical field [0001] The invention belongs to the field of chemical materials, and in particular relates to a degradable PE film with high temperature resistance, light resistance and aging resistance and a preparation method thereof. Background technique [0002] Polyethylene (PE for short) is a thermoplastic resin obtained by polymerization of ethylene. In industry, it also includes copolymers of ethylene and a small amount of α-olefins. Polyethylene is odorless, non-toxic, feels like wax, has excellent low temperature resistance (the lowest operating temperature can reach -100 ° C ~ -70 ° C), good chemical stability, and can withstand most acid and alkali erosion (not resistant to oxidation) nature of the acid). It is insoluble in common solvents at room temperature, has low water absorption and excellent electrical insulation, so it is widely used in various industries. Polyethylene film is the most widely used polymer material in the world today. PE protective fil...

AI Technical Summary

Problems solved by technology

Polyethylene film has now been widely used in medicine, chemical industry, food, electronics, printing and other industries, but based on some characteristics of polyethylene itself, polyethylene film also has some shortcomings in application, such as the temperature resistance of polyethylene is not good High, the current temperature of polyethylene film used in the market generally does not exceed 100 ° C, so in some special fields polyethylene film will be limited, and at the same time under long-term light conditions, the surface of polyethylene film will appear discoloration and other phenomena , Yes, the aging of the film is accelerated, thus affecting the service life, these aspects greatly limit the application of polyethylene film

At the same time, due to the poor degradation performance of polyethylene, the use of polyethylene film will involve environmental protection. Therefore, it is necessary to have a PE film material that can overcome the influence of use temperature and has good degradation performance.

[0003] The Chinese patent with the application number 201310641154.4 discloses a photodegradable polyethylene film. The film is composed of 43% corn starch, 12% compatibilizer, 25% carbonic acid, 15% nanocrystalline dispersing powder, and 5% coupling agent. , the rest are impurities, but it does not indicate the level of its temperature resistance and degradation performance, nor does it improve the light aging resistance of the film

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