Antibacterial thermoplastic resin composition as well as preparation method and application thereof

Abstract

The invention relates to an antibacterial thermoplastic resin composition as well as a preparation method and application thereof, belonging to the field of antibacterial thermoplastic plastics. The antibacterial thermoplastic resin composition comprises the following components in parts by weight: 100 parts of thermoplastic resin and 0.03-4.8 parts of a guanidine salt antibacterial microsphere, wherein the guanidine salt antibacterial microsphere has the characteristics of good fluidity and low moisture absorption, and in the preparation process of the antibacterial thermoplastic resin composition, a guanidine salt polymer does not adhere to the wall and is easy to discharge, production and operation are simple, and excessive production condition control is not needed. The prepared antibacterial thermoplastic resin composition has good antibacterial and mildew-proof effects, and is also improved in water resistance.

Description

technical field [0001] The invention relates to the field of antibacterial thermoplastics, and more specifically, relates to an antibacterial thermoplastic resin composition and its preparation method and application. Background technique [0002] Plastic products are one of the most common and most contacted items in people's life and work. Because plastic products are easy to be contaminated and breed a variety of microorganisms during processing and use, pathogenic bacteria and molds have caused certain damage to people's health. hazards. In recent years, with the improvement of people's living standards and the enhancement of hygiene awareness, people pay more and more attention to the pursuit of a healthy living environment, and the demand for antibacterial material products is increasing, among which antibacterial plastic products occupy an important position. Due to the wide variety of thermoplastics, easy processing, and wide application range, they are widely used ...

AI Technical Summary

Problems solved by technology

However, due to the strong water solubility of most guanidinium salt polymers, it is difficult to make powder samples, which limits its application in the fields of plastics, rubber and fibers

The Chinese patent whose publication number is CN101037503A has invented a kind of method for preparing powdered guanidinium salt polymer product, and the guanidinium salt polymer is separated from aqueous solution by ion separation exchange membrane to make powder sample; But this method prepares guanidinium salt polymer The conditions of the powder are relatively harsh and the process is more complicated

[0006] The Chinese patent with the publication number CN1350022A has invented a method for preparing polyamines and guanidinium salt polymers. The molecular structure of guanidinium salt polymers contains active groups such as double bonds and epoxy, which are used for melting and solution with resin polymers. And solid-phase grafting reaction to prepare antibacterial plastic products; but the steps are cumbersome

The publication numbers are CN102453315A and CN102453316A, which have prepared composite antibacterial agents by co-precipitating guanidinium salt polymers, pyridinium sulfate, silicate, etc., and applied them to film products such as polylactic acid and polypropylene, and foamed plastic products. application; however, sodium pyrithione needs to be used, and the cost is relatively high

The Chinese patent with publication number CN102453273A provides a kind of antibacterial masterbatch based on guanidinium salt polymer, which needs to be operated at a certain temperature in the process of preparing antibacterial agent, which consumes a lot of energy, and the appearance of the product after drying and crushing Poor particle size control