Broad-spectrum high-efficiency antibacterial masterbatch based on nano-cluster technology and preparation method thereof

An antibacterial masterbatch and nano-cluster technology, applied in the field of plastic masterbatch, can solve the problems of difficult dispersion, poor chemical stability, high temperature resistance, etc., and achieve the effects of uniform dispersion, good stability and excellent antibacterial properties.

Inactive Publication Date: 2011-10-19
SHANGHAI LANGYI FUNCTIONAL MATERIALS
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Organic antibacterial agents have strong immediate effect, but poor safety and chemical stability. Organic antibacterial agents have poor temperature resistance and are easily decomposed and invalidated under resin processing temperature and pressure, and bacteria will also develop resistance to such antibacterial agents.
Inorganic metal antibacterial agents have good antibacterial properties, especially nano-silver, which has a good spectrum sterilization effect, but is difficult to disperse and not resistant to high temperature

Method used

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  • Broad-spectrum high-efficiency antibacterial masterbatch based on nano-cluster technology and preparation method thereof
  • Broad-spectrum high-efficiency antibacterial masterbatch based on nano-cluster technology and preparation method thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0023] Embodiment 1: 10g of nanometer silver powder is dissolved in the mixed solution of 500ml n-hexane and xylene, the mass ratio of n-hexane and xylene is 1: 1, then add MFI and be 100g in the polypropylene chip of 25, reflux in wide mouth The device was heated to reflux at 130°C until dissolved, then the temperature was raised to 150°C to distill off the solvent, and after cooling, the solid was taken out and ground into powder. Afterwards, the powder and polypropylene powder are added to the twin-screw at a mass ratio of 1:100, blended, extruded, and pelletized at 190°C to obtain brightly colored polypropylene masterbatches.

Embodiment 2

[0024] Embodiment 2: Nano-silver powder 10g is dissolved in the mixed solution of 500ml toluene and xylene, the mass ratio of toluene and xylene is 2: 1, then add MFI and be 100g in the polypropylene chip of 20, in wide-mouth reflux device Heat to reflux at 130°C until dissolved, then raise the temperature to 150°C to distill off the solvent, take out the solid after cooling and grind it into powder. Afterwards, the powder and PET powder were added to the twin-screw at a mass ratio of 1:50, blended, extruded, and pelletized at 280°C to obtain bright-colored modified PET masterbatches.

Embodiment 3

[0025] Embodiment 3: the n-heptane solution of nano-silver, wherein containing the mixed solution of nano-silver 10g and 500ml n-hexane and sherwood oil, the mass ratio of n-hexane and sherwood oil is 1: 1, then adding MFI is 25 poly Take 200g of propylene slices, heat and reflux at 130°C in a wide-mouth reflux device until dissolved, then raise the temperature to 150°C to distill off the solvent, take out the solid after cooling, and grind it into powder. Afterwards, the powder and polyethylene powder are added to the twin-screw at a mass ratio of 1:100, blended, extruded, and pelletized at 185°C to obtain polyethylene masterbatches with bright colors.

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Abstract

The invention discloses a broad-spectrum high-efficiency antibacterial masterbatch based on nano-cluster technology and a preparation method thereof, and the method particularly comprises the following steps: dispersing nanometer silver powder into a nonpolar or weak-polar solvent, adding polypropylene slices and dissolving the slices; removing the solvent by heating reflux, drying and grinding into powder, and finally performing screw extrusion to obtain the broad-spectrum high-efficiency antibacterial masterbatch based on nano-cluster technology. The antibacterial masterbatch produced by the method has excellent dispersibility, and good stability; the production process is simple; the solvent is recyclable, green and environment-friendly; the product has the excellent performance of strong versatility, lasting antibacterial activity, and reprocessability, and has wide applicability.

Description

Technical field [0001] The invention relates to a plastic master batch capable of preparing various antibacterial plastic fiber film products, in particular to a plastic master batch capable of preparing polypropylene plastic film products. Background technique [0002] "Antibacterial" has become one of the most popular words in the 21st century, reflecting people's emphasis on hygiene and quality of life. The preparation of antibacterial materials, especially antibacterial plastics and films, is usually achieved by adding antibacterial agents. The antimicrobial efficacy of an antimicrobial agent is directly related to the efficacy of the product. At present, antimicrobial agents are mainly divided into three categories: inorganic, organic and natural antimicrobial agents. Organic antibacterial agents have strong immediate effects, but poor safety, poor chemical stability, and poor temperature resistance. They are easily decomposed and invalidated under resin processing te...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C08L23/12C08K3/08C08L67/02C08L23/06C08L77/02C08L77/06C08L67/04C08L29/04C08L27/06C08L1/00
Inventor 唐晓峰赵宏鑫
Owner SHANGHAI LANGYI FUNCTIONAL MATERIALS
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