PE antibacterial film and preparation method thereof

Abstract

The invention discloses a PE (polyethylene) antibacterial film and a preparation method thereof. The PE antibacterial film is prepared from the following raw materials in parts by weight: 100-150 parts of linear low-density polyethylene, 25-40 parts of antibacterial master batch, 18-25 parts of a composite antibacterial agent, 15-20 parts of hexanediol butyl ether acetate, 8-16 parts of glycerol, 0.5-1.5 parts of an antioxidant and 0.5-0.8 parts of a preservative. The antibacterial master batch is prepared from the following components in parts by weight: 50-70 parts of low-density polyethylene, 20-35 parts of polyvinyl alcohol, 10-20 parts of chitosan and 3-7 parts of inorganic antibacterial powder. The antibacterial master batch and the composite antibacterial agent are added into the linear low-density polyethylene, and the PE antibacterial film is prepared through the processes of extrusion granulation and extrusion film blowing. The antibacterial rate of the finally prepared PE antibacterial film on escherichia coli is larger than or equal to 99.99%, and meanwhile, the antibacterial rate on staphylococcus aureus and the antibacterial rate on candida albicans are larger than or equal to 99.14%. The PE antibacterial film has broad-spectrum and high-efficiency antibacterial performance, good mechanical performance and high tensile strength.

Description

technical field [0001] The invention relates to the technical field of film materials, in particular to a PE antibacterial film and a preparation method thereof. Background technique [0002] There are a large number of microorganisms in nature, and they are the most contacted organisms with human beings. Microbial pollution will have adverse effects on the human body. For example, common polar enteritis and chronic enteritis are caused by infections such as Halobacterium, Salmonella, Escherichia coli, Proteus and Staphylococcus. These common intestinal infection bacteria exist in large quantities In contaminated poultry, livestock meat, fish; and in leftovers and leftovers contaminated by Staphylococcus aureus. Serious bacterial infection even threatens human life, and millions of people die from bacterial infection every year all over the world. Therefore, countries all over the world pay more and more attention to the research of antibacterial agents and antibacterial p...

AI Technical Summary

Problems solved by technology

Adding silver-loaded antibacterial agent or nano-zinc oxide to polyethylene film can prevent the infection of harmful microorganisms, but the silver ion in the silver-loaded inorganic antibacterial agent with silver ion as the main additive is active in chemical properties and relatively sensitive to light and heat. Sensitive, there is some discoloration problem

[0005] In addition, common PE films have some shortcomings, such as: poor film stiffness, low tensile strength, easy to deform when heated, poor tear resistance, and low barrier properties, etc.

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