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Method for preparing anti-bacterial plastic filament

An antibacterial plastic and filament technology, applied in the direction of single-component polyolefin rayon, single-component polyamide rayon, etc., can solve the problems of easy to darken color, poor chemical stability, low antibacterial performance, etc. High application value, simple preparation process, and the effect of eliminating bacteria and fungi

Inactive Publication Date: 2015-09-30
SHANGHAI NAT ENG RES CENT FORNANOTECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Commonly used inorganic antibacterial agents include silver-based, copper-based, and zinc-based agents. Among them, silver-based antibacterial agents are relatively expensive, have poor chemical stability, and are prone to darken in color when exposed to external light, which ultimately affects the appearance and antibacterial properties of the product. ;Although zinc-based antibacterial agents have no discoloration problem and are cheap, they have low antibacterial performance; copper-based antibacterial agents not only have high cost performance, but copper ions are also essential trace elements for the human body, which are crucial to the life process

Method used

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  • Method for preparing anti-bacterial plastic filament
  • Method for preparing anti-bacterial plastic filament
  • Method for preparing anti-bacterial plastic filament

Examples

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Effect test

Embodiment 1

[0020] Weigh 100 g of copper powder, add it to 400 g of ethanol, stir with a high-speed shear disperser for 10 min, adjust the pH value with HCl and NaOH, then add 3 g of silane coupling agent (KH550), and shear at high speed for 60 min , After drying at 110°C for 3 h, the modified nano-copper powder was obtained. Weigh 100 parts of polyethylene resin, 1 part of liquid paraffin, 0.1 part of antioxidant, 2 parts of modified nano-copper antibacterial agent, then fully mix it evenly, process it with a twin-screw extruder, and each district of the twin-screw extruder The temperature is: Zone 1 70°C, Zone 2 80°C, Zone 3 100°C, Zone 4 140°C, Zone 5 155°C, Zone 6 155°C, Zone 7 160°C, Zone 8 160°C, Zone 9 160°C, Zone 10 zone 160°C, zone 11 160°C, zone 12 160°C, head 155°C, feeding speed: 12, extruder speed: 180 rpm, after granulation, slices were dried at 80°C for 3 hours, and the slices were drawn to prepare into copper / polyethylene antibacterial wire.

Embodiment 2

[0022] Weigh 100 g of copper powder, add it to 500 g of ethanol, stir it with a high-speed shear disperser for 5 minutes, then add 2 g of titanate coupling agent (NDZ-311), after high-speed shearing for 80 minutes, at 100 ° C After drying for 3 h, the modified nano-copper powder was obtained. Weigh 100 parts of nylon 6 resin, 1 part of zinc stearate, 0.1 part of antioxidant, and 1.5 parts of modified nano-copper antibacterial agent. The water adsorbed on the surface, then fully mix the weighed nylon 6, modified copper powder, antioxidant and lubricant, and process it with a twin-screw extruder. The temperature of each zone of the twin-screw extruder is: Zone 1 180°C, 200°C in zone 2, 200°C in zone 3, 220°C in zone 4, 255°C in zone 5, 258°C in zone 6, 258°C in zone 7, 258°C in zone 8, 258°C in zone 9, 258°C in zone 10, 11 zone 258°C, zone 12 255°C, head 250°C, feeding speed: 10, extruder speed: 160 rpm, after granulation, dry at 80°C, and draw the slices to prepare antibacteri...

Embodiment 3

[0024] Weigh 150 g of copper powder, add it to a mixture of 800 g of ethanol and water, stir for 15 min with a high-speed shear disperser, adjust the pH value with HCl and NaOH, and add 2.5 g of silane coupling agent (KH570) after stabilization , high-speed shearing for 90 min, and drying at 100 °C for 8 h to obtain modified nano-copper powder. Weigh 100 parts of nylon 6 resin, 1.8 parts of calcium stearate, 0.3 parts of antioxidant, and 3 parts of nano-copper antibacterial agent. Firstly, put the nylon 6 raw material in a dehumidification dryer, and dry it at 100°C for 8 hours to remove the water adsorbed on the surface, then fully mix the weighed nylon 6, copper powder, antioxidant and lubricant, and use a twin-screw Extruder for processing, the temperature of each zone of the twin-screw extruder is: zone 1 150°C, zone 2 180°C, zone 3 200°C, zone 4 225°C, zone 5 250°C, zone 6 255°C, zone 7 258°C , eighth zone 258°C, ninth zone 260°C, tenth zone 258°C, eleventh zone 255°C, t...

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Abstract

The invention discloses a method for preparing an anti-bacterial plastic filament. The finished product anti-bacterial plastic filament is obtained through melt extrusion, granulation and spinning with a plastic base body, modified copper powder antibacterial agents and auxiliaries as raw materials. Due to the fact that nanoscale copper powder has very excellent anti-bacterial anti-mold performances, the anti-bacterial rate of the anti-bacterial plastic filament against strains such as escherichia coli and staphylococcus aureus reaches over 99%. A process for preparing the anti-bacterial plastic filament is simple; and the anti-bacterial plastic filament has lasting broad-spectrum anti-bacterial and anti-mold effects, can be widely applied to the fields of tail fibers of intrauterine contraceptive devices, anti-bacterial toothbrushes and makeup brushes and particularly has very high application values in plum rain prone zones in the South of China.

Description

technical field [0001] The invention belongs to the technical field of preparation and application of antibacterial composite materials, and in particular relates to a preparation method of antibacterial plastic filaments. Background technique [0002] For a long time, pathogenic microorganisms such as harmful bacteria and molds have caused great harm to people's production and life. With the continuous development of society and the continuous improvement of living standards, people put forward higher requirements for health, living environment quality and hygiene level, thus promoting the rapid development of antibacterial technology and antibacterial materials. [0003] Plastics are widely used in daily life. By adding antibacterial agents, the antibacterial properties of plastics can be increased, which can effectively reduce bacterial infection, ensure the health of human life, and meet people's increasing requirements. At present, inorganic antibacterial agents have r...

Claims

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Application Information

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IPC IPC(8): D01F6/46D01F6/90D01F1/10
Inventor 何丹农韩晓芳陈超王艳丽朱君陈俊琛王岩岩张现张春明
Owner SHANGHAI NAT ENG RES CENT FORNANOTECH
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