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A kind of graphene antibacterial masterbatch, fiber and preparation method thereof

A technology of antibacterial masterbatch and antibacterial fiber, which is applied in the field of graphene antibacterial masterbatch, fiber and its preparation, can solve the problems of weak antibacterial performance, poor heat resistance of chitosan, agglomeration, etc., and achieve good antibacterial performance, uniform dispersion, The effect of enhancing physical and mechanical properties

Active Publication Date: 2020-04-07
福建烯石新材料科技有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0006] Chinese patent document CN 104098893 A proposes a conductive, antibacterial polyamide 6 / polypropylene composite material and its preparation method. The invention uses silver-zinc inorganic antibacterial agents, graphene and other additives to prepare polyamide 6 / polypropylene composite materials. There is graphene agglomeration, and nano-silver zinc-based inorganic antibacterial agents have been banned from use in textiles by the United States and other countries
CN106417275 A proposes a preparation method of chitosan-wrapped nano-silver graphene oxide composite antibacterial material, the method graphene dispersibility is better, but its heat resistance of chitosan is poor, more than 200 ℃, degradation reaction occurs, and The processing temperature of nylon fiber is generally around 240°C
[0007] In the process of realizing the present invention, the inventors found the following problems in the prior art: the nano-metal antibacterial agent commonly used in existing nylon fibers can penetrate human skin and produce toxicity
However, when graphene is applied to nylon fibers to make antibacterial fibers, there is a problem that the antibacterial performance is weak when the amount of addition is small, and agglomeration occurs when the amount of addition is large.

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0028] The first powder preparation: 1g of graphene oxide is placed in a 500ml beaker, 200ml of distilled water is added, the PH value is adjusted to 8 with NaOH, magnetically stirred evenly to form a graphene oxide suspension; 5g of water-soluble polyquaternary ammonium salt is added and stirred again for 0.5 h, make it fully dissolved, place the mixed solution under ultrasonic for 2h, filter, and wash with distilled water to remove unreacted NaOH, dry it for later use, and obtain the first powder.

[0029] The second powder preparation: Weigh 15g nylon 6 slices and dissolve them in a beaker containing 100mL formic acid, stir at room temperature to dissolve, add 5g of the first powder, stir again for 0.5h, ultrasonically shake, use ethanol to clean and filter, in a blast drying oven Dry to constant weight at 80℃ to obtain the second powder.

[0030] Masterbatch preparation: Add the second powder and nylon 6 into a high-speed mixer at a mass ratio of 1:3, stir for 5 minutes and the...

Embodiment 2

[0033] The first powder preparation: 1g of graphene oxide is placed in a 500ml beaker, 200ml of distilled water is added, the PH value is adjusted to 9 with NaOH, magnetically stirred evenly to form a graphene oxide suspension; 8g of water-soluble polyquaternary ammonium salt is added and stirred again for 0.5 h, make it fully dissolved, place the mixed solution under ultrasonic for 2h, filter, and wash with distilled water to remove unreacted NaOH, dry it for later use, and obtain the first powder.

[0034] Preparation of the second powder: Weigh 15g nylon 6 slices and dissolve them in a beaker containing 100mL formic acid, stir at room temperature to dissolve, add 8g of the first powder, stir again for 0.5h, ultrasonically shake, use ethanol to clean and filter, in a blast drying oven Dry to constant weight at 70°C to obtain the second powder.

[0035] Masterbatch preparation: Add the second powder and nylon 6 into a high-speed mixer according to a mass ratio of 1:5, stir for 5 m...

Embodiment 3

[0038] The first powder preparation: 1g of graphene oxide is placed in a 500ml beaker, 200ml of distilled water is added, the pH value is adjusted to 8.5 with NaOH, magnetically stirred to form a graphene oxide suspension; 10g of water-soluble polyquaternary ammonium salt is added, and stirred again for 0.5 h, make it fully dissolved, place the mixed solution under ultrasonic for 2h, filter, and wash with distilled water to remove unreacted NaOH, dry it for later use, and obtain the first powder.

[0039] Preparation of the second powder: Weigh 15g nylon 6 slices and dissolve them in a beaker containing 100mL formic acid, stir at room temperature to dissolve, add 10g of the first powder, stir again for 0.5h, ultrasonically shake, use ethanol to clean and filter, in a blast drying oven Dry to constant weight at 90°C to obtain the second powder.

[0040] Masterbatch preparation: Add the second powder and nylon 6 into a high-speed mixer at a mass ratio of 1:4, stir for 5 minutes and t...

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PUM

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Abstract

A preparation method of graphene antibacterial master batch comprises the following steps of first powder preparation, second powder preparation and master batch preparation. According to the technical scheme, water-soluble polyquaternary ammonium salt serves as an intercalation agent and an antibacterial agent, gaps between layers of a graphene oxide sheet are increased, then the water-soluble polyquaternary ammonium salt and nylon 6 are prepared into a microcapsule, and a core-shell structure is formed. According to the antibacterial master batch prepared through the method, polyquaternary ammonium salt and graphene oxide are used for preventing bacteria together, so that the master batch is good in antibacterial property; meanwhile, graphene is uniform in dispersion, and the physical and mechanical properties are enhanced; the graphene and nylon 6 can be fused and blended for preparing antibacterial textile silk.

Description

Technical field [0001] The invention relates to the field of material engineering, in particular to graphene antibacterial master batches, fibers and preparation methods thereof. Background technique [0002] Polyamide fiber is commonly known as nylon and nylon. It is a general term for thermoplastic fibers containing repeating amide groups—[NHCO]—on the molecular backbone. Nylon fiber has the characteristics of good abrasion resistance, high resilience, good dyeability, and excellent mechanical properties, and can be used in clothing, construction, chemical and other fields. However, nylon fiber itself does not have antibacterial function, especially in the humid air in the south, when nylon fiber fabric comes in contact with human skin, due to the accumulation of static electricity, nylon fiber will attract nutrients such as dander from the human body, and it is easy to breed bacteria. Fiber discoloration and mildew can cause skin infections, endanger people's health, and even...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C08L77/02C08K7/00C08K3/04D01F6/60D01F1/10C08J3/22
CPCC08J3/226C08J2377/02C08L77/02C08L2201/08C08L2203/12C08L2205/025D01F1/103D01F6/60C08K7/00C08K3/04
Inventor 方华玉鲍领翔王国德卓丽琼吴建通李天源朱恩斌姜兴盛李忠亭杨庆文陈建华托马斯·沃尔特施密特克里斯蒂娜·罗森赫斯勒卡梅伦·达内希瓦尔
Owner 福建烯石新材料科技有限公司
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