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Antimicrobial polyamide material and preparation method thereof

An antibacterial polyamide and polyamide resin technology is applied in the field of antibacterial polyamide materials and their preparation, and achieves the effects of simple process and wide sterilization ability.

Inactive Publication Date: 2011-11-16
SHENZHEN KEJU NEW MATERIAL
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Nylon is a polar molecule with polar amide bonds in its molecular chain, and has good compatibility with chitosan. However, there is no research report on the modification of nylon antibacterial materials by filling chitosan into nylon resin.

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0040] (1) Take components by mass percentage: PA6 resin mass ratio is 80%; Compatibilizer (PP grafted maleic anhydride) mass ratio is 10%; Antioxidant mass ratio is 0.2%;

[0041] (2) Mix in high-speed mixer for 10 minutes;

[0042] (3) Put the homogeneously mixed components in a twin-screw extruder, melt, mix, extrude and granulate.

[0043] Wherein the antibacterial agent (chitosan, molecular weight 10000 Dalton, deacetylation degree 98%, mass ratio 9.8%) is added in the way of side feeding.

[0044] In the temperature control section of the twin-screw machine, the processing technology is: the temperature of the first zone is 200-220°C, the temperature of the second zone is 210-230°C, the temperature of the third zone is 220-240°C, the temperature of the fourth zone is 220-240°C, and the temperature of the fifth zone is 220-240°C. The temperature in the zone is 210-230°C, the temperature in the sixth zone is 210-230°C, and the temperature in the seventh zone is 230-250°C....

Embodiment 2

[0046] (1) Take components by mass percentage: PA6 resin mass ratio is 90%; Compatibilizer (PP grafted maleic anhydride) mass ratio is 5%; Antioxidant mass ratio is 0.2%;

[0047] (2) Mix in high-speed mixer for 10 minutes;

[0048] (3) Put the homogeneously mixed components in a twin-screw extruder, melt, mix, extrude and granulate.

[0049] Wherein the antibacterial agent (chitosan, molecular weight 10000 Dalton, deacetylation degree 98%, mass ratio 4.8%) is added in the way of side feeding.

[0050] In the temperature control section of the twin-screw machine, the processing technology is: the temperature of the first zone is 200-220°C, the temperature of the second zone is 210-230°C, the temperature of the third zone is 220-240°C, the temperature of the fourth zone is 220-240°C, and the temperature of the fifth zone is 220-240°C. The temperature in the zone is 220-240°C, the temperature in the sixth zone is 210-230°C, and the temperature in the seventh zone is 230-250°C. ...

Embodiment 3

[0052] (1) Take components by mass percentage: PA66 resin mass ratio is 92%; Compatibilizer (PP grafted maleic anhydride) mass ratio is 4%; Antioxidant mass ratio is 0.2%;

[0053] (2) Mix in high-speed mixer for 10 minutes;

[0054] (3) Put the homogeneously mixed components in a twin-screw extruder, melt, mix, extrude and granulate.

[0055] Wherein the antibacterial agent (chitosan, molecular weight 10000 Dalton, deacetylation degree 98%, mass ratio 3.8%) is added in the way of side feeding.

[0056] In the temperature control section of the twin-screw machine, the processing technology is: the temperature of the first zone is 200-220°C, the temperature of the second zone is 230-240°C, the temperature of the third zone is 240-270°C, the temperature of the fourth zone is 250-270°C, and the temperature of the fifth zone is 250-270°C. The temperature in the zone is 240-260°C, the temperature in the sixth zone is 230-250°C, and the temperature in the seventh zone is 250-270°C....

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Abstract

The invention relates to the technical field of polymer plastics and discloses an antimicrobial polyamide material and a preparation method thereof. The antibacterial polyamide material consists of the following components: polyamide resin, an antimicrobial agent, a compatibilizer and an antioxidant. One purpose of the invention is to provide the antimicrobial polyamide material which is non-toxic, antibacterial, natural and environmentally-friendly; and the other purpose of the invention is to provide the preparation method of the antimicrobial polyamide material, wherein the preparation method is simple and environmentally-friendly in process.

Description

technical field [0001] The invention relates to the technical field of polymer plastics, in particular to an antibacterial polyamide material and a preparation method thereof. Background technique [0002] Polyamide (PA, nylon) modified engineering plastics have the following characteristics: high melting point, excellent heat resistance and self-extinguishing properties; excellent balance of toughness, durability, electrical properties and other physical properties; excellent oil resistance agent, chemical resistance; excellent wear resistance, creep resistance and aging resistance. Therefore, nylon engineering plastics are widely used in industrial fields. [0003] At present, the preparation method of antibacterial plastics is mainly made by adding a small amount of antibacterial agents, blending and compounding, and its active ingredients are antibacterial agents. , the most widely used, but most inorganic antibacterial agents are heavy metal ions, which are highly tox...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C08L77/02C08L77/06C08L77/00C08L5/08C08L51/06C08K5/134C08K5/526
Inventor 徐东徐永黄新政
Owner SHENZHEN KEJU NEW MATERIAL
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