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Nano-copper antibacterial plastic masterbatch and preparation method thereof

A technology of antibacterial plastics and nano-copper, which is applied in the field of nano-copper antibacterial plastic masterbatch and its preparation, can solve the problems of high price of silver-based antibacterial agents, failure to meet antibacterial requirements, and reduced commercial value, etc., to achieve complete and effective antibacterial, mildew-proof, Easy to distribute evenly, good antibacterial and antifungal properties

Inactive Publication Date: 2015-04-29
SHANGHAI NAXU IND
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] At present, the commonly used inorganic antibacterial agents on the market are silver-based and zinc-based antibacterial agents. Although silver-based antibacterial agents have high bactericidal ability, they have relatively high chemical stability due to their high chemical potential of 0.798 volts (25°C). Poor, under ultraviolet radiation or after heating to a certain temperature, silver ions are reduced to metallic silver and immediately converted to silver oxide, making the product gray and black, which not only reduces its commercial value, but also weakens its antibacterial properties
In addition, the price of silver-based antibacterial agents is relatively high, and their antifungal ability is weak
Although the zinc-based antibacterial agent has no discoloration problem and is cheap, its antibacterial performance is low and cannot meet the antibacterial requirements

Method used

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  • Nano-copper antibacterial plastic masterbatch and preparation method thereof
  • Nano-copper antibacterial plastic masterbatch and preparation method thereof
  • Nano-copper antibacterial plastic masterbatch and preparation method thereof

Examples

Experimental program
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Effect test

Embodiment 1

[0023] Embodiment 1: an antibacterial plastic master batch, the weight parts of each component are as follows: 40 parts of polypropylene resin, 20 parts of liquid paraffin, 10 parts of antioxidant, 30 parts of nano-copper antibacterial agent, when preparing, first pre-treating raw materials , process the polypropylene resin into a plastic powder with a particle size between 1 μm and 20 μm, and dry the nano-copper antibacterial powder, and then blend the components according to conventional methods in the art, and use a twin-screw extruder to carry out For processing, the parameters of the twin-screw extruder are set to: 90°C in the first zone, 120°C in the second zone, 130°C in the third zone, 150°C in the fourth zone, 160°C in the fifth zone, 180°C in the sixth zone, 190°C in the seventh zone, and 190°C in the eighth zone. , 200 ℃ in nine zones, the main engine speed is 100 rpm, the feeding speed is 10 rpm, dicing, and low temperature drying. The SEM image of the antibacteria...

Embodiment 2

[0024] Embodiment 2: an antibacterial plastic masterbatch, the weight parts of each component are as follows: 80 parts of polypropylene resin, 1 part of liquid paraffin, 3 parts of antioxidant, 16 parts of nano-copper antibacterial agent, when preparing, first pretreating raw materials , process the polypropylene resin into a plastic powder with a particle size between 1 μm and 20 μm, and dry the nano-copper antibacterial powder, and then blend the components according to conventional methods in the art, and use a twin-screw extruder to carry out For processing, the parameters of the twin-screw extruder are set to: 120°C in the first zone, 130°C in the second zone, 140°C in the third zone, 150°C in the fourth zone, 160°C in the fifth zone, 190°C in the sixth zone, 190°C in the seventh zone, and 200°C in the eighth zone. , nine zones 200 ℃, main engine speed 150 rpm, feeding speed 15 rpm, dicing, low temperature drying. The antibacterial plastic masterbatch obtained in this exa...

Embodiment 3

[0025] Embodiment 3: an antibacterial plastic masterbatch, the weight parts of each component are as follows: 85 parts of polypropylene resin, 3 parts of liquid paraffin, 1 part of antioxidant, 11 parts of nano-copper antibacterial agent, when preparing, first pretreating raw materials , process the polypropylene resin into a plastic powder with a particle size between 1 μm and 20 μm, and dry the nano-copper antibacterial powder, and then blend the components according to conventional methods in the art, and use a twin-screw extruder to carry out For processing, the parameters of the twin-screw extruder are set to: 130°C in the first zone, 150°C in the second zone, 170°C in the third zone, 180°C in the fourth zone, 180°C in the fifth zone, 185°C in the sixth zone, 185°C in the seventh zone, and 195°C in the eighth zone. Nine zones 195°C, main engine speed 200 rpm, feeding speed 20 rpm, dicing, low temperature drying. The antibacterial plastic masterbatch obtained in this examp...

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Abstract

The invention discloses a nano-copper antibacterial plastic masterbatch and a preparation method thereof. The antibacterial plastic masterbatch is prepared from the following components in parts by weight: 1-10 parts of an antioxidant, 1-20 parts of liquid paraffin, 1-30 parts of a nano-copper antibacterial agent and 40-90 parts of a plastic body. The preparation method comprises the following steps: raw material pretreatment, mixing, extruding and pelletizing. The antibacterial plastic masterbatch disclosed by the invention has the advantages of simple production process, high universality, good machinability and the like; continuous large-scale production can be achieved; the plastic product obtained by the plastic processing manners such as injection molding and extruding has a good antibacterial effect; and the mechanical property of the plastic product is not affected by addition of the antibacterial masterbatch.

Description

technical field [0001] The invention relates to the technical field of polymer composite materials. Specifically, it relates to a nano-copper antibacterial plastic masterbatch and a preparation method thereof. Background technique [0002] With the development and progress of industry and the improvement of people's material living standards, people have higher and higher requirements for product safety, living and working environment hygiene. Because of its light weight, no rust, easy molding, good insulation, and no water absorption, plastic has become the raw material for the manufacture of various daily necessities, especially in the field of kitchen and bathroom products that have been in a humid environment for a long time. Because most of the plastic products that are exposed to daily, such as: telephones, computers, washing machines, refrigerators, power switches, bus handrails, cutting boards, toilets, etc., do not have antibacterial functions, bacteria can easily ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C08L23/12C08K13/02C08K3/08C08K5/01C08J3/22
CPCC08L23/12C08J3/226C08J2323/12C08J2491/06C08K2201/011C08L2201/08
Inventor 何丹农王岩岩张春明张现韩哓芳陈超高林
Owner SHANGHAI NAXU IND
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