KR-102964612-B1 - MANUFACTURING METHOD OF ANTIBACTERIAL MASTERBATCH FOR POLYESTER CONTAINING GRAPHENE

Abstract

The present invention relates to a method for manufacturing an antibacterial masterbatch for polyester containing graphene, and more specifically, comprises a graphene mixture manufacturing step of manufacturing a graphene mixture by mixing deionized water, graphene, and ammonia; a raw material mixing step of mixing the graphene mixture manufactured through the graphene mixture manufacturing step and an antibacterial agent into polyester; a zinc powder mixing step of mixing zinc powder into the mixture manufactured through the raw material mixing step; and an extrusion step of extruding the mixture manufactured through the zinc powder mixing step. The graphene-containing antimicrobial masterbatch for polyester produced through the above process not only exhibits excellent antimicrobial properties but also provides the effect of supplying polyester yarn with improved physical properties such as far-infrared radiation, lubricity, scratch resistance, UV blocking, abrasion resistance, electrical conductivity, and tensile strength.

Inventors

• 김택용

Dates

Publication Date

20260513

Application Date

20240502

Claims (7)

1. A graphene mixture preparation step of preparing a graphene mixture by mixing ionized water, graphene, and ammonia; A raw material mixing step in which a graphene mixture obtained through the graphene mixture manufacturing step and an antimicrobial agent are mixed into a polyester; A zinc powder mixing step for mixing zinc powder into the mixture obtained through the above raw material mixing step; and An extrusion step for extruding the mixture obtained through the above zinc powder mixing step; A method for manufacturing an antimicrobial masterbatch for polyester containing graphene, characterized by comprising:
2. In claim 1. A method for manufacturing an antibacterial masterbatch for polyester containing graphene, characterized in that the graphene mixture manufacturing step comprises 100 parts by weight of ionized water, 1 to 5 parts by weight of graphene, and 0.2 to 0.4 parts by weight of ammonia.
3. In claim 1, A method for manufacturing an antibacterial masterbatch for polyester containing graphene, characterized in that the above raw material mixing step comprises mixing 1 to 5 parts by weight of a graphene mixture obtained through the above graphene mixture manufacturing step, 0.5 to 10 parts by weight of an antibacterial agent, and 1 to 5 parts by weight of a dispersant with 100 parts by weight of polyester.
4. In claim 1 or 3, A method for manufacturing an antimicrobial masterbatch for polyester containing graphene, characterized in that the above antimicrobial agent is composed of zeolite.
5. In claim 3, A method for manufacturing an antibacterial masterbatch for polyester containing graphene, characterized in that the above-mentioned dispersant comprises one or more selected from the group consisting of amine-based and stearic acid-based agents.
6. In claim 1, A method for manufacturing an antibacterial masterbatch for polyester containing graphene, characterized in that the zinc powder mixing step is performed by mixing 0.1 to 1 part by weight of zinc powder having a particle size of 0.1 to 1.0 micrometers with 100 parts by weight of the mixture obtained through the raw material mixing step.
7. In claim 1, A method for manufacturing an antibacterial masterbatch for polyester containing graphene, characterized in that the extrusion step is performed by extruding the mixture obtained through the raw material mixing step at a temperature of 210 to 270°C using a twin extruder with an L/D ratio of 44:1.

Description

Manufacturing Method of Antibacterial Masterbatch for Polyester Containing Graphene The present invention relates to a method for manufacturing an antimicrobial masterbatch for polyester containing graphene, and more specifically, to a method for manufacturing a polyester yarn containing graphene for producing a polyester yarn having excellent antimicrobial performance and improved mechanical properties such as far-infrared radiation, lubricity, scratch resistance, UV blocking, abrasion resistance, electrical conductivity, and tensile strength. delete Although synthetic fibers possess superior mechanical properties compared to natural fibers, their low absorption capacity allows sweat and various organic substances secreted by the human body to adhere, providing a suitable environment for microorganisms such as bacteria and fungi to thrive. The proliferation of these microorganisms can lead to foul odors, discoloration and contamination of textile products, and even diseases caused by human infection. For this reason, many attempts have long been made to impart the function of inhibiting the growth of bacteria harmful to the human body to fiber materials. In addition, a master batch refers to a highly concentrated functional resin in which functional compounding agents, such as additives, are mixed at a high concentration to impart various necessary functionalities to petrochemical-related industrial products, including chemical fibers, and a dispersant is used to prevent the compounding agents from shifting. Meanwhile, graphene is a single-atom layer two-dimensional material in which carbon atoms form a honeycomb-shaped hexagon and are connected by covalent bonds. It has excellent thermal, mechanical, electrical, and optical properties, and thus has infinite potential for application in various industrial fields, such as barrier coating materials and ultra-lightweight high-strength composites. However, since defect-free graphene is difficult to uniformly disperse in polymer resins and organic solvents due to van der Waals forces between graphene layers, it is difficult to manufacture coating materials and high-performance functional composites, and research on technologies for actual application is currently very limited. To address these issues with graphene, research on surface modification utilizing various functional groups of graphene is actively underway. However, existing studies have encountered problems such as high reaction heat, low reproducibility, and unsuitability for mass production, requiring improvements. delete FIG. 1 is a flowchart illustrating a method for manufacturing an antibacterial masterbatch for polyester containing graphene according to the present invention. FIGS. 2 to 10 are test reports showing the antibacterial performance of a polyester yarn containing an antibacterial masterbatch containing graphene, manufactured through Examples 1 to 3 of the present invention. Hereinafter, preferred embodiments of the present invention and the physical properties of each component are described in detail. This description is intended to be sufficient for a person skilled in the art to easily practice the invention, and does not imply that the technical scope and concept of the present invention are limited thereby. As illustrated in FIG. 1, the method for manufacturing an antibacterial masterbatch for polyester containing graphene according to an embodiment of the present invention comprises a graphene mixture manufacturing step (S101) of manufacturing a graphene mixture by mixing ionized water, graphene, and ammonia; a raw material mixing step (S103) of mixing the graphene mixture manufactured through the graphene mixture manufacturing step (S101) and an antibacterial agent into polyester; a zinc powder mixing step (S105) of mixing zinc powder into the mixture manufactured through the raw material mixing step (S103); and an extrusion step of extruding the mixture manufactured through the zinc powder mixing step (S105). The above graphene mixture manufacturing step (S101) is a step of manufacturing a graphene mixture by mixing ionized water, graphene, and ammonia, and preferably consists of 100 parts by weight of ionized water, 1 to 5 parts by weight of graphene, and 0.2 to 0.4 parts by weight of ammonia. Specifically, graphene is first processed into a powder form, then 100 parts by weight of deionized water and 1 to 5 parts by weight of the graphene processed into a powder form are added to a stirrer and mixed, and heated and stirred at a temperature of 60°C to produce a 3-9% concentrated mixture in a liquid state. At this time, since the aqueous graphene solution in liquid state has a strong acidity with a pH between 3 and 5, 0.2 to 0.4 parts by weight of ammonia are mixed to disperse the graphene particles. It is preferable to use a thin plate-like graphene with a thickness of 50 to 200 nanometers based on D50. Here, graphene is a two-dimensional carbon-bonded monolayer material made