CN-121975224-A - Preparation method and application of copper-based antibacterial master batch

Abstract

The invention discloses a preparation method and application of copper-based antibacterial master batch. The copper-based antibacterial master batch comprises, by weight, 73-93 parts of carrier resin, 5-20 parts of copper-based antibacterial agent, 1-5 parts of dispersing agent and 1-2 parts of antioxidant. According to the invention, through reasonable proportion of the carrier resin, the copper-based antibacterial agent, the dispersing agent and the antioxidant, the prepared copper-based antibacterial master batch has high-efficiency and durable antibacterial effect and excellent stability and safety, and can be widely applied to various antibacterial materials.

Inventors

• CHEN PENG
• Niu Xiruo
• JIE BINYONG
• CAO SHIHAI

Assignees

• 长篙新材料科技(湖州)有限公司
• 南京工程学院

Dates

Publication Date

20260505

Application Date

20260106

Claims (8)

1. 1. The copper-based antibacterial master batch is characterized by comprising, by weight, 73-93 parts of carrier resin, 5-20 parts of copper-based antibacterial agent, 1-5 parts of dispersing agent and 1-2 parts of antioxidant.
2. 2. The copper-based antimicrobial master batch of claim 1, wherein the carrier resin comprises at least one of polyethylene, polypropylene, polyvinyl chloride, polystyrene, polyurethane, acrylonitrile-butadiene-styrene copolymer, polyethylene terephthalate, polyamide, polycarbonate, polybutylene terephthalate, polyphenylene oxide, polyoxymethylene, thermoplastic polyurethane, polysulfone, or polymethyl methacrylate.
3. 3. The copper-based antimicrobial master batch of claim 1, wherein the copper-based antimicrobial agent is copper phosphate.
4. 4. The copper-based antimicrobial master batch of claim 1, wherein the dispersant comprises at least one of polyethylene wax, oxidized polyethylene wax, polypropylene wax, stearic acid, zinc stearate, calcium stearate, a silane coupling agent, a titanate coupling agent, a glycerol fatty acid ester, a maleic anhydride graft, an oleamide, or an erucamide.
5. 5. The copper-based antimicrobial master batch of claim 1, wherein the antioxidant comprises at least one of antioxidant 1010, antioxidant 1076, antioxidant 168, or antioxidant 626.
6. 6. A method for preparing the copper-based antibacterial master batch according to claims 1 to 5, comprising the following steps: mixing and stirring carrier resin, copper-based antibacterial agent, dispersing agent and antioxidant according to the proportion to obtain a mixture; and (3) carrying out melt extrusion granulation on the mixture by a double-screw extruder to obtain the copper-based antibacterial master batch.
7. 7. Use of the copper-based antibacterial master batch according to any one of claims 1 to 5 for the preparation of a fibrous or plastic article.
8. 8. The application of the copper-based antibacterial master batch in preparing fiber products or plastic products, according to claim 7, is characterized in that the fiber products or plastic products comprise, by weight, 90-97.5 parts of resin raw materials and 2.5-10 parts of copper-based antibacterial master batch.

Description

Preparation method and application of copper-based antibacterial master batch Technical Field The invention relates to the field of antibacterial materials, in particular to a preparation method and application of copper-based antibacterial master batches. Background With the development of society and the increase of public health consciousness, there is an increasing need for efficient, safe, broad-spectrum antibacterial materials. The plastic product has the advantages of portability, durability, low cost and the like, and is widely applied to the fields of daily life, medical treatment and health, food packaging, building material home furnishing and the like. However, many polymeric materials do not possess antimicrobial and mildew-proof properties, and their surfaces are extremely susceptible to contamination and growth of microorganisms such as bacteria, mold, etc. in warm, humid use environments. This not only results in mildew, discoloration and performance degradation of the product, shortening the service life, but also may be a vehicle for disease transmission, potentially threatening public health and human health. The silver ion antibacterial master batch commonly used at present has excellent antibacterial effect, but has certain toxicity by European and American markets. Therefore, the invention tries to develop an antibacterial master batch with excellent stability, long-acting property, safety and broad-spectrum antibacterial property. The patent CN116903952A discloses a mildew-proof antibacterial master batch for a high-salt high-humidity environment and a preparation method thereof, wherein the mildew-proof antibacterial master batch comprises, by mass, 70-80% of an ethylene-vinyl acetate copolymer, 1-5% of a dispersing agent, 1-7% of a water repellent, 5-15% of an organic mildew-proof antibacterial agent and 5-15% of an inorganic antibacterial agent, the organic mildew-proof antibacterial agent is selected from one or a combination of more of triclosan, iodopropynyl butylcarbamate and polyhexamethylene guanidine hydrochloride, and the inorganic antibacterial agent is a nano silver/halloysite composite antibacterial agent. The mildew-proof antibacterial master batch prepared by the process has the advantage of excellent mildew-proof antibacterial effect under a high-salt and high-humidity environment. However, organic antimildew and antibacterial agents are prone to biological resistance and have poor heat resistance and chemical stability. In addition, nano-silver may damage human cells, which also presents a potential risk to the environment and ecology. Patent CN113604015A provides a photocatalyst polylactic acid antibacterial master batch, a preparation method and application thereof. The photocatalyst polylactic acid antibacterial master batch comprises, by weight, 75-90 parts of polylactic acid, 3-12 parts of photocatalyst nano particles, 0.5-2 parts of an antioxidant, 1-1.5 parts of a dispersing agent and 7-23 parts of a modified inorganic silver-carrying antibacterial agent. The photocatalyst polylactic acid antibacterial master batch has excellent antibacterial and antiviral effects, and is nontoxic and harmless. However, the inorganic silver-carrying antibacterial agent achieves a sterilizing effect by releasing silver ions, so that a long-acting lasting effect cannot be achieved. Meanwhile, dissolved silver ions are easy to permeate and accumulate in human bodies when contacting with the human bodies, and potential safety hazards exist. Disclosure of Invention Aiming at the defects of the prior art, the invention aims to provide a preparation method and application of copper-based antibacterial master batch. The copper-based antibacterial master batch provided by the invention has the advantages of high-efficiency and durable antibacterial effect, excellent stability and safety, simple preparation process, wide raw material sources, low cost, no need of complex equipment and suitability for industrial application. In order to achieve the above purpose, the present invention adopts the following technical scheme: In the first aspect, the invention provides a copper-based antibacterial master batch, which comprises, by weight, 73-93 parts of a carrier resin, 5-20 parts of a copper-based antibacterial agent, 1-5 parts of a dispersing agent and 1-2 parts of an antioxidant. Preferably, the carrier resin comprises at least one of polyethylene, polypropylene, polyvinyl chloride, polystyrene, polyurethane, acrylonitrile-butadiene-styrene copolymer, polyethylene terephthalate, polyamide, polycarbonate, polybutylene terephthalate, polyphenylene oxide, polyoxymethylene, thermoplastic polyurethane, polysulfone, or polymethyl methacrylate. Preferably, the copper-based antimicrobial agent is copper phosphate. Preferably, the dispersant comprises at least one of polyethylene wax, oxidized polyethylene wax, polypropylene wax, stearic acid, zinc stearate, calcium stearate, a silane coupling ag