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Zinc oxide-quaternary ammonium salt polymer composite antibacterial agent and preparation method thereof

A compound antibacterial agent and quaternary ammonium salt technology, which is applied in the field of zinc oxide-quaternary ammonium salt polymer composite antibacterial agent and its preparation, can solve the problem of weak binding force, loss of nano-zinc oxide, and inability to exert long-term antibacterial properties of nano-zinc oxide effect and other issues, to achieve the effect of good combination fastness, uniform dispersion, and long-lasting antibacterial finishing effect

Active Publication Date: 2019-11-15
科凯精细化工(上海)有限公司
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  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0005] However, in the preparation methods of these composite antibacterial agents, there are some deficiencies. For example, due to the weak binding force between the nano-zinc oxide and the quaternary ammonium salt copolymer, the rapid loss of the nano-zinc oxide during the use of the finished textile is caused. The antibacterial effect of nano zinc oxide cannot be exerted for a long time; another example is that the composite antibacterial agent of nano zinc oxide and quaternary ammonium salt copolymer is easy to fall off from the textile, especially after repeated washing, thus losing the original antibacterial performance, etc. Therefore, we must try to overcome these defects and develop antibacterial agents with good antibacterial performance and better fastness.

Method used

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  • Zinc oxide-quaternary ammonium salt polymer composite antibacterial agent and preparation method thereof
  • Zinc oxide-quaternary ammonium salt polymer composite antibacterial agent and preparation method thereof
  • Zinc oxide-quaternary ammonium salt polymer composite antibacterial agent and preparation method thereof

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preparation example Construction

[0032] The preparation method of the zinc oxide-quaternary ammonium salt polymer composite antibacterial agent of one embodiment, comprises the following steps:

[0033] Step S110, using a silane coupling agent containing double bonds to modify the nano-zinc oxide to obtain active nano-zinc oxide.

[0034] In one embodiment, the silane coupling agent containing double bonds is γ-methacryloxypropyltrimethoxysilane.

[0035]In one of the embodiments, the step of modifying nano-zinc oxide to obtain active nano-zinc oxide with a silane coupling agent containing a double bond is specifically:

[0036] Step S111 , after mixing nanometer zinc oxide, γ-methacryloxypropyltrimethoxysilane and a solvent, ultrasonically dispersing to obtain a dispersion liquid.

[0037] Preferably, ultrasonic dispersion is performed for 1 hour to obtain a dispersion.

[0038] Preferably, the mass ratio of nanometer zinc oxide to γ-methacryloxypropyltrimethoxysilane is 1:1˜1:5.

[0039] Preferably, the ...

Embodiment 1

[0102] (1) Preparation of nano-zinc oxide composite solution: Mix 1.0g nano-zinc oxide, 40g ethanol, 18g water and 4g γ-methacryloxypropyltrimethoxysilane evenly, ultrasonically disperse for 1h, and heat at 60°C The water bath was refluxed for 12 hours, then cooled to room temperature, and the product was centrifuged and washed to obtain active nanometer zinc oxide. Dissolve 4g of ammonium persulfate in 10g of deionized water, and divide it into two equal parts, then add 4.0g of active nano-zinc oxide, 50g of deionized water, 12g of acrylic acid, 4.0g of allyl glycidyl ether and 7g of potassium persulfate solution to the In a three-neck flask, stir evenly, then heat in a water bath to 80°C, and react for 20 minutes; then add dropwise 12g of acrylic acid, 4.0g of allyl glycidyl ether, and 7g of potassium persulfate solution, keep stirring for 4.0h, then cool down to room temperature, that is Obtain nano-zinc oxide complex solution.

[0103] (2) Synthesis of quaternary ammonium...

Embodiment 2

[0106] (1) Preparation of nano-zinc oxide composite solution: Mix 1.0g nano-zinc oxide, 40g ethanol, 18g water and 4g γ-methacryloxypropyltrimethoxysilane evenly, ultrasonically disperse for 1h, and heat at 60°C The water bath was refluxed for 12 hours, then cooled to room temperature, and the product was centrifuged and washed to obtain active nanometer zinc oxide. Dissolve 4g of ammonium persulfate in 10g of deionized water, and divide it into two equal parts, then add 4.0g of active nano-zinc oxide, 50g of deionized water, 12g of acrylic acid, 4.0g of allyl glycidyl ether and 7g of potassium persulfate solution to the In a three-neck flask, stir evenly, then heat in a water bath to 80°C, and react for 20 minutes; then add dropwise 12g of acrylic acid, 4.0g of allyl glycidyl ether, and 7g of potassium persulfate solution, keep stirring for 4.0h, then cool down to room temperature, that is Obtain nano-zinc oxide complex solution.

[0107] (2) Synthesis of quaternary ammonium...

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Abstract

The invention relates to a preparation method of a zinc oxide-quaternary ammonium salt polymer composite antibacterial agent. The preparation method of the zinc oxide-quaternary ammonium salt polymer composite antibacterial agent comprises the following steps of preparing a nanometer zinc oxide compound solution; preparing a quaternary ammonium salt polymer solution; mixing the nanometer zinc oxide compound solution and the quaternary ammonium salt polymer solution to obtain the zinc oxide-quaternary ammonium salt polymer composite antibacterial agent. The zinc oxide-quaternary ammonium salt polymer composite antibacterial agent prepared by the preparation method of the zinc oxide-quaternary ammonium salt polymer composite antibacterial agent is a compound of a quaternary ammonium salt copolymer and active nanometer zinc oxide; through the synergistic effect of quaternary ammonium salt ions and nanometer zinc oxide, the antibacterial performance of organic and inorganic materials can be fully realized; good antibacterial performance is given to fabrics; meanwhile, active groups capable of taking an effect with cotton fiber are contained in an antibacterial finishing agent, so that the durable antibacterial effect is achieved.

Description

technical field [0001] The invention relates to a zinc oxide-quaternary ammonium salt polymer composite antibacterial agent and a preparation method thereof. Background technique [0002] With the continuous improvement of living standards, people's demand for healthy and environmentally friendly fabrics has also increased rapidly, and antibacterial fabrics have become one of the most important means to increase the added value of textiles. There are two main production methods for antibacterial fabrics: one method is to add antibacterial agents to fiber-forming polymers and make antibacterial fibers after spinning; the other method is to use antibacterial finishing methods. The most commonly used method at present is the antibacterial finishing method, which is realized by adding antibacterial agents during the finishing of textiles. This method is very convenient and is widely used in actual production. [0003] There are many antibacterial finishing agents applied to tex...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): D06M15/356D06M15/347C08F292/00C08F220/06C08F216/14C08F226/02D06M101/06
CPCC08F226/02C08F292/00D06M15/347D06M15/3562D06M16/00D06M2101/06D06M2400/01C08F220/06C08F216/1416
Inventor 任一波俞成丙
Owner 科凯精细化工(上海)有限公司
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