Polypropylene with bacteriostasis function

Abstract

The invention relates to polypropylene with a bacteriostasis function. The polypropylene comprises the following ingredients by weight: 80 parts of polypropylene, 0.15-0.3 part of a compound antibacterial agent and 0.2-0.3 part of a plasticizer, wherein the compound antibacterial agent is prepared from the following raw materials by weight: 40 percent of an organic bacteriostatic agent, 35 percent of nano titanium dioxide and 25 percent of chitosan; the organic bacteriostatic agent comprises the following raw materials by weight percent: 35 percent of terpenic oil, 25 percent of a scutellaria baicalensis extract and 30 percent of clove oil. As the compound antibacterial agent is added into the polypropylene with the bacteriostasis function, the bacteriostatic effect of the polypropylene is improved, and staphylococcus aureus and colibacillus can be well inhibited; as the traditional Chinese medicine extract is mixed with nano titanium dioxide, chitosan and the like, the bacteriostatic and bactericidal effects are greatly improved, and the effect is greatly higher than the single using effect.

Description

technical field [0001] The invention belongs to the field of plastics, and in particular relates to a polypropylene with antibacterial effect. Background technique [0002] Polypropylene is a non-toxic, odorless, tasteless milky white highly crystalline polymer with a density of only 0.90--"0.91g / cm3, which is one of the lightest types of all plastics. It is particularly stable to water, and its The water absorption rate is only 0.01%, and the molecular weight is about 80,000 to 150,000. The formability is good, but due to the large shrinkage rate (1%~2.5%), thick-walled products are easy to sag, and it is difficult to achieve some parts with high dimensional accuracy. Requirements, the surface gloss of the product is good. Polypropylene is widely used and is an important raw material for food packaging, but the existing polypropylene material has no antibacterial effect, which causes bacteria to breed in polypropylene products during use, affecting the safety during use. ...

AI Technical Summary

Problems solved by technology

Good formability, but due to the large shrinkage rate (1%~2.5%), thick-walled products are easy to sag, and it is difficult to meet the requirements for some parts with high dimensional accuracy, and the surface gloss of the product is good

Polypropylene is widely used and is an important raw material for food packaging, but the existing polypropylene materials have no antibacterial effect, causing bacteria to breed in polypropylene products during use, affecting the safety during use

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