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Preparation method of Cu/ZnO composite antibacterial PP masterbatch

A technology of compound antibacterial and antibacterial masterbatch, applied in the field of preparation of polypropylene masterbatch, can solve the problems of easy discoloration of silver ion activity, poor stability, poor heat resistance, etc., and achieve good spectral antibacterial and antifungal effects, bending and stretching. The effect of increasing strength and good mechanical properties

Inactive Publication Date: 2015-05-06
SHANGHAI NAXU IND
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Inorganic antibacterial agents usually refer to inorganic substances such as silver, copper, zinc, etc., which mainly use their oxidative activity and free ions to kill fungi. Among them, silver-based substances have the strongest bactericidal ability, but the presence of silver ions is slightly toxic, too active, and easy to change color. and other problems, while copper-based substances have strong lethality to fungi, but have almost no effect on bacteria, and zinc-based substances have only moderate antibacterial performance; the main varieties of organic antibacterial agents are vanillin and ethyl vanillin compounds, but organic antibacterial agents Antibacterial agents have problems such as unknown safety, poor heat resistance, and easy hydrolysis; natural antibacterial agents are mainly extracted from natural plants such as mustard, chitin, and horseradish, but they have problems such as limited bactericidal effect and poor stability.

Method used

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  • Preparation method of Cu/ZnO composite antibacterial PP masterbatch
  • Preparation method of Cu/ZnO composite antibacterial PP masterbatch
  • Preparation method of Cu/ZnO composite antibacterial PP masterbatch

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0023] Take 700 g of isotactic polypropylene, 0.25 g of antioxidant 1010, 0.25 g of antioxidant 168 and 50 g of liquid paraffin, put them into a high-mixer for mixing, and take them out for later use. Take 125 g of nano-copper and nano-zinc oxide for high-speed mixing. After mixing evenly, add the previous mixture and continue mixing to obtain an antibacterial mixture. Antibacterial PP masterbatch is obtained through a twin-screw extruder. Take 50 g of the antibacterial masterbatch and 950 g of blank PP slices, melt and blend them through a twin-screw extruder, and pelletize them with a high-speed cold cutter to obtain antibacterial PP slices, which are designated as #1.

[0024] Table 1 is the PP masterbatch twin-screw extrusion process table, figure 1 is the SEM photo of nano-copper, figure 2 It is the SEM photo of ZnO nanoparticles.

Embodiment 2

[0026] 800 g of isotactic polypropylene, 0.3 g of antioxidant 1010, 0.6 g of antioxidant 168, and 25 g of liquid paraffin were put into a high-mixer for mixing, and then taken out for later use. Take 50 g of nano-copper and 125 g of nano-zinc oxide for high-speed mixing. After mixing evenly, add the previous mixture and continue mixing to obtain an antibacterial mixture. Antibacterial PP masterbatch is obtained through a twin-screw extruder. Take 120 g of the antibacterial masterbatch and 880 g of blank PP slices, melt and blend them through a twin-screw extruder, and pelletize them with a high-speed cold cutter to obtain antibacterial PP slices, which are designated as #2.

[0027] Table 2 shows the EDS analysis data of PP antibacterial masterbatch.

Embodiment 3

[0029] 850 g of isotactic polypropylene, 0.5 g of antioxidant 1010, 1.5 g of antioxidant 168 and 10 g of liquid paraffin were put into a high-mixer for mixing, and were taken out for later use. Take 27.6 g of nano-copper and 138 g of nano-zinc oxide for high-speed mixing. After mixing evenly, add the previous mixture and continue mixing to obtain an antibacterial mixture. Antibacterial PP masterbatch is obtained through a twin-screw extruder. Take 100 g of the antibacterial masterbatch and 900 g of blank PP slices, melt and blend them through a twin-screw extruder, and pelletize them with a high-speed cold cutter to obtain antibacterial PP slices, which are designated as #3.

[0030] image 3 It is the SEM photo of the cross section of PP masterbatch.

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Abstract

The invention mainly provides a preparation method of Cu / ZnO composite antibacterial PP masterbatch. The antibacterial masterbatch comprises the following blended components: matrix resin, a composite antibacterial agent, a lubricant and a composite antioxidant, wherein the composite antibacterial agent accounts for 10-30wt%, the dosage of the lubricant is 1-5wt%, and the dosage of the composite antioxidant is 0.05-0.2wt%. The method has the advantages of simple process and relatively low cost; the prepared antibacterial masterbatch is applied to antibacterial modification of polypropylene, has relatively high antibacterial rate against bacteria and fungi and causes less influence on the mechanical properties of resin, thereby having a good market prospect.

Description

technical field [0001] The invention relates to a preparation method for polymer composite functional materials, in particular to a preparation method for polypropylene masterbatch with composite antibacterial function. Background technique [0002] Polypropylene is a thermoplastic resin polymerized from propylene. According to the arrangement of methyl groups, it can be divided into three types: isotactic polypropylene, atactic polypropylene and syndiotactic polypropylene. Polypropylene has high crystallinity and regular structure, so it has excellent mechanical properties. At the same time, it also has advantages such as non-toxic, odorless, and low density. Its strength, stiffness, hardness, and heat resistance are all better than low-pressure polyethylene. Therefore, polypropylene has gradually replaced the latter and has more applications in the fields of household appliances, plastic pipes, and high-permeability materials. [0003] With the development of society, peo...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C08L23/12C08L91/06C08K13/02C08K3/08C08K3/22C08K5/134C08K5/526C08J3/22
CPCC08J3/226C08J2323/12C08J2423/12C08K2201/011C08L23/12C08L91/06C08K13/02C08K5/1345C08K5/526C08K2003/085C08K2003/2296
Inventor 何丹农张现张春明王岩岩韩哓芳陈超高林
Owner SHANGHAI NAXU IND