Antibacterial polypropylene master batch and preparation method thereof

A technology of antibacterial polypropylene and polypropylene is applied in the field of efficient and environmentally friendly antibacterial polypropylene masterbatch and its preparation, so as to achieve the effects of improving antibacterial properties, stable performance and uniform dispersion

Active Publication Date: 2017-08-01
NINGBO UNIV +2
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

This patent introduces LDH composite antibacterial agent into polypropylene to prepare highly efficien

Method used

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  • Antibacterial polypropylene master batch and preparation method thereof
  • Antibacterial polypropylene master batch and preparation method thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0026] First, the maleate-branched polypropylene with a grafting rate of 0.8% is crushed into powder with a particle size of 200 mesh, and then 400g of antibacterial agent, 200g of compatibilizer, 4g of antioxidant 1076, and 16g of calcium stearate are added to the high-speed mixer In the process, after stirring and mixing for 0.5h, add 380g polypropylene to continue mixing for 0.5h, dry at 60°C after starting the material, and then melt, extrude, and granulate through a twin-screw extruder to obtain 1000g of highly efficient and environmentally friendly antibacterial polypropylene. Acrylic masterbatch finished product.

Embodiment 2

[0028]First, the maleate branched polypropylene with a grafting rate of 0.9% is crushed into powder with a particle size of 250 mesh, and then 450g of antibacterial agent, 100g of compatibilizer, 20g of antioxidant 1010, and 30g of zinc stearate are added to the high-speed mixer In the process, after stirring and mixing for 0.5h, add 400g polypropylene and continue mixing for 0.6h. After starting the material, dry it under vacuum at 80°C, and then melt, extrude and granulate through a twin-screw extruder to obtain 1000g of highly efficient and environmentally friendly antibacterial Finished polypropylene masterbatch.

Embodiment 3

[0030] First, the maleate branched polypropylene with a grafting rate of 1.0% is pulverized into powder with a particle size of 300 mesh, then 300g of antibacterial agent, 150g of compatibilizer, 4g of antioxidant 1076, 1g of antioxidant 626, and 45g of polyethylene Add the wax into the high-speed mixer, stir and mix for 1 hour, add 500g polypropylene and continue mixing for 0.8 hours, dry at 90°C after starting the material, and then melt, extrude, and granulate through a twin-screw extruder to obtain 1000g high-efficiency Environmentally friendly antibacterial polypropylene masterbatch finished product.

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Abstract

The invention discloses antibacterial polypropylene master batch and a preparation method thereof. Each 100 weight parts of antibacterial polypropylene master batch is prepared from 20 to 50 parts of antibacterial agent, 3 to 20 parts of compatibilizer, 30 to 75 parts of carrier resin, 0.4 to 2 parts of antioxidant and 0.5 to 5 parts of lubricant. The preparation method comprises the steps of smashing the compatibilizer into powder with granularity of 200 to 400 meshes, then stirring and mixing the compatibilizer with the antibacterial agent, the antioxidant and the lubricant in a high-speed mixing machine for 0.5 to 1h, then adding the carrier resin, continuously mixing for 0.5 to 1h and drying in 60 to 100 DEG C to obtain a crude material after material discharging; melting, extruding and granulating the crude material through a double-screw extruder to obtain a finished product of the master batch. The antibacterial polypropylene master batch disclosed by the invention has the advantages of high efficiency, environmental friendliness, even antibacterial agent distribution, stable performance and the like, can be directly added into a polypropylene base body according to proportion, effectively improves antibacterial performance of polypropylene films, is wide in raw material sources, simple in preparation technology and low in energy consumption and is easy for industrial production.

Description

technical field [0001] The invention belongs to the technical field of antibacterial materials, and in particular relates to an efficient and environment-friendly antibacterial polypropylene masterbatch and a preparation method thereof. Background technique [0002] Polypropylene packaging film is one of the most widely used packaging materials at present, and is often used in food packaging materials. In actual use, due to environmental reasons, it is easy to cause bacterial growth, which brings many unsafe factors to people's lives. Antimicrobial treatment of packaging materials is often required to improve safety during transportation and storage. At present, the modification method commonly used in polypropylene packaging materials is to introduce antibacterial agents into the polypropylene matrix, such as: inorganic antibacterial agents, organic antibacterial agents and natural antibacterial agents. These antibacterial agents all have certain antibacterial effects, bu...

Claims

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Application Information

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IPC IPC(8): C08L23/12C08L51/06C08K13/02C08K3/34C08J3/22
CPCC08J3/226C08J2323/12C08J2423/12C08L23/12C08L2205/025C08L2205/03C08L2205/035C08L51/06C08K13/02C08K3/346
Inventor 曹国洲李娟朱晓艳刘在美肖道清
Owner NINGBO UNIV
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