Polyethylene terephthalate (PET) plastic with bacteriostatic effect

Abstract

The invention discloses polyethylene terephthalate (PET) plastic with a bacteriostatic effect. The PET plastic comprises the following components in parts by weight: 100 parts of PET plastic, 1-5 parts of a composite antibacterial agent and 1-4 parts of a plasticizer; the composite antibacterial agent is prepared from the following raw materials in percentage by weight: 40% of an organic bacteriostatic agent, 40% of nano titanium dioxide and 20% of chitosan, wherein the organic bacteriostatic agent is prepared from the following raw materials in percentage by weight: 40% of terpenic oil, 40% of eucalyptus oil and 20% of clove oil; and the plasticizer is dibutyl phthalate. According to the PET plastic with the bacteriostatic effect, the composite antibacterial agent is added into the PET plastic, so that the antibacterial effect of the PET plastic is improved, and the PET plastic has a good inhibition effect on staphylococcus aureus and escherichia coli. In addition, the traditional Chinese medicine extracts are mixed with the nano titanium dioxide, the chitosan and the like for use, so that the effects of bacteriostasis and sterilization are greatly improved.

Description

technical field [0001] The invention relates to the field of plastics, in particular to a PET plastic with the effect of inhibiting bacteria. Background technique [0002] PET plastic is a non-toxic, odorless, tasteless milky white high-crystallization 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. 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% to 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. Contents of the invention [0003] The technical problem to be solved by the present invention is to provide a PET plastic with antibacterial effect, which comprises: 100 parts of PET plastic, 1-5 parts of composite antibacterial agent, and 1-4 parts of plast...

AI Technical Summary

Problems solved by technology

Good formability, but due to the large shrinkage rate (1% to 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