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Preparation method of high-load antibacterial nanofiber film

A nanofiber, high-load technology, used in fiber processing, fiber chemical characteristics, rayon manufacturing, etc., can solve the problems of ignoring the synergy between technological development and environmental problems, unable to distribute evenly, and mix evenly, and increase the number of attachment points. , the effect of increasing the load rate and increasing the specific surface area

Inactive Publication Date: 2020-12-15
ZHEJIANG YASHA DECORATION
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0002] Today in the 21st century, the development of science and technology has made outstanding contributions to the survival and development of human beings, but human beings ignore the synergy between technological development and environmental issues
In this application, the PVC resin cannot be dissolved in the mixed solution of absolute ethanol, acetic acid and triethylamine provided by the patent, and the obtained mixed solution is a separated solid-liquid two-phase, and the nano-titanium dioxide cannot be evenly distributed on the PVC surface, so in Tetrabutyl titanate cannot be mixed evenly with PVC resin, and agglomeration will occur during the high-pressure hydrothermal reaction process, which makes nano-titanium dioxide not firmly combined with PVC resin, and there is a problem of low loading rate

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0033] A preparation method for a high-load antibacterial nanofiber film, comprising the following steps:

[0034](1) Mix dimethylformamide and tetrahydrofuran at a volume ratio of 1:1 and stir evenly to obtain a solvent. Slowly add 3.0 g of PVC resin into 30 mL of solvent, and stir until the PVC resin is completely dissolved to obtain a PVC solution.

[0035] (2) Add 8 mL of tetrabutyl titanate to the PVC solution prepared above, and stir until the mixture is evenly dispersed to obtain a titanium precursor solution.

[0036] Prepare the electrospinning device. The electrospinning device is mainly composed of a propulsion pump, a syringe, a high-voltage power supply, and a receiving device. Among them, the positive pole and the negative pole of the high-voltage power supply are connected to the syringe needle and the receiving device respectively, and the form of the receiving device is also diversified, which can be a stationary plane, a high-speed rotating roller or a disc,...

Embodiment 2

[0042] A preparation method for a high-load antibacterial nanofiber film, comprising the following steps:

[0043] (1) Mix dimethylformamide and tetrahydrofuran at a volume ratio of 0.5:1 and stir evenly to prepare a solvent. Slowly add 1.5 g of PVC resin into 30 mL of solvent, and stir until the PVC resin is completely dissolved to obtain a PVC solution.

[0044] (2) Add 6 mL of tetrabutyl titanate to the PVC solution prepared above, and stir until the mixture is evenly dispersed to obtain a titanium precursor solution.

[0045] Transfer the above-mentioned titanium precursor solution to the syringe of the electrospinning device, adjust the high-voltage power supply to 8KV, and the relative air humidity to 40%, and spray the above-mentioned titanium precursor solution at a flow rate of 1.0m / h to make PVC- TBT film.

[0046] (3) Transfer the prepared film to a high-pressure hydrothermal reactor (that is, a stainless steel pressure cooker lined with polytetrafluoroethylene), ...

Embodiment 3

[0050] A preparation method for a high-load antibacterial nanofiber film, comprising the following steps:

[0051] (1) Mix dimethylformamide and tetrahydrofuran at a volume ratio of 3:1 and stir evenly to obtain a solvent. Slowly add 4.5 g of PVC resin into 30 mL of solvent, and stir until the PVC resin is completely dissolved to obtain a PVC solution.

[0052] (2) Add 9 mL of tetrabutyl titanate to the PVC solution prepared above, and stir until the mixture is evenly dispersed to obtain a titanium precursor solution.

[0053] Transfer the above-mentioned titanium precursor solution to the syringe of the electrospinning device, adjust the high-voltage power supply to 14KV, and the relative air humidity to 60%, and spray the above-mentioned titanium precursor solution at a flow rate of 4.0m / h to make PVC - TBT film.

[0054] (3) Transfer the prepared film to a high-pressure hydrothermal reactor (that is, a stainless steel pressure cooker lined with polytetrafluoroethylene), a...

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Abstract

The invention relates to the technical field of antibacterial materials, in particular to a preparation method of a high-load antibacterial nanofiber film. The preparation method comprises the following steps that PVC resin is added into a solvent to be dissolved to obtain a PVC solution, wherein the solvent comprises dimethylformamide; the PVC solution is uniformly mixed with a titanium source toobtain a precursor solution of titanium, and the precursor solution of titanium is prepared into a film by adopting an electrostatic spinning method; and nano titanium dioxide is synthesized with rutile phase content of more than 99% from the titanium source on the film by adopting a hydrothermal method to prepare the high-load nanofiber film. According to the preparation method, the loading rateand the loading stability of the nano titanium dioxide on the PVC surface can be effectively improved.

Description

technical field [0001] The invention relates to the technical field of antibacterial materials, in particular to a method for preparing a high-load antibacterial nanofiber film. Background technique [0002] Today in the 21st century, the development of science and technology has made outstanding contributions to the survival and development of human beings, but human beings have ignored the synergy between technological development and environmental issues. The natural ecological environment has been seriously damaged, and human health has been greatly threatened. The SARS in 2003, various bird flus and bacterial viruses in the later period caused human beings to face unprecedented disasters. Therefore, people began to have extremely high requirements for antibacterial in terms of food, drink, housing, transportation, antibacterial textiles, etc. [0003] Due to the characteristics of small fiber diameter, small pore size, high porosity and large specific surface area, tr...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): D04H1/728D01D5/00D01F6/48D01F1/10
CPCD01D5/0015D01F1/103D01F6/48D04H1/728
Inventor 彭伟丁欣欣丁泽成王文广周东珊蒋义赏郑爱爱
Owner ZHEJIANG YASHA DECORATION
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