Antibacterial easily-degradable plastic bottle cap and preparation method thereof

Abstract

The invention discloses an antibacterial easily-degradable plastic bottle cap and a preparation method thereof. The antibacterial easily-degradable plastic bottle cap is prepared from the following raw materials in parts by weight: 50-70 parts of polylactic acid; 10-20 parts of polypropylene; 5-10 parts of a dispersing agent; 1-3 parts of a plasticizer; 6-10 parts of a chain extender; 3-8 parts ofsilicon quaternary ammonium salt; 10 to 15 parts of citric acid; 10 to 15 parts of porous titanium dioxide; and 3-8 parts of organosilicon quaternary ammonium salt. Compared with the prior art, the antibacterial easily-degradable plastic bottle cap disclosed by the invention can be quickly decomposed and absorbed by microorganisms in soil, causes little pollution to the environment, and has better environmental benefits; the efficient and long-acting antibacterial property is realized, the antibacterial effect is obvious, and the preservation of the product is better facilitated; injection molding is carried out through a conventional processing technology, so that the preparation method is simple and flexible, and the processing molding performance is good.

Description

Technical field [0001] The present invention relates to the field of plastic caps and preparation method, particularly to a plastic bottle cap easily degradable antibacterial preparation method thereof. Background technique [0002] With the popularity of plastic bottles, the problems it brings more and more significant, because of its good corrosion resistance, and some can not be recycled waste plastic bottles back to nature difficult to break down, resulting in the accumulation of waste plastic this is what we often say "white pollution." [0003] Currently, the most commonly used method is to re-use plastic bottle recycling process. However, due to the relatively small plastic bottle caps, plastic bottle caps typically occurs with plastic bottles isolated phenomenon, which also caused difficult to recycle plastic bottle caps. In addition, for some packaged beverage or food plastic bottles, the caps play a protective effect on the food and beverage plastic bottle, plastic bott...

AI Technical Summary

Problems solved by technology

However, due to the relatively small size of the plastic bottle cap, the phenomenon of separation of the plastic bottle cap and the plastic bottle usually occurs, which also makes it difficult to recycle the plastic bottle cap

In addition, for some plastic bottles containing beverages or food, the caps can protect the beverages and food in the plastic bottles, and the plastic caps are especially prone to bacteria breeding when exposed to the air for a long time, causing pollution to food and medicine.

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