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A kind of zirconium hydroxide nanosheet/nanofiber composite membrane and preparation method thereof

A technology of nanofiber membrane and zirconium hydroxide, which is applied in fiber treatment, synthetic fiber, fiber type, etc., can solve the problems of long synthesis cycle, unstable application performance, and difficult to control the morphology of metal hydroxide nanosheets. Achieve the effect of easy size, stable structure and good mechanical properties

Active Publication Date: 2021-12-10
DONGHUA UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] The technical problem to be solved by the present invention is: the synthesis cycle of metal hydroxide nanosheets obtained by electrochemical deposition is relatively long, and it is difficult to control the morphology of metal hydroxide nanosheets, which leads to unstable application performance

Method used

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  • A kind of zirconium hydroxide nanosheet/nanofiber composite membrane and preparation method thereof
  • A kind of zirconium hydroxide nanosheet/nanofiber composite membrane and preparation method thereof
  • A kind of zirconium hydroxide nanosheet/nanofiber composite membrane and preparation method thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0034] A preparation method of zirconium hydroxide nanosheet / nanofiber composite film:

[0035] (1) 0.5g of polyvinylpyrrolidone (PVP) was dissolved in 12g of n-propanol, stirred at room temperature for 4h until a homogeneous system was formed, and a high molecular polymer solution with a mass fraction of 4% was prepared;

[0036] (2) Add 10.4g zirconium n-propoxide to the high molecular polymer solution, the mass ratio of zirconium n-propoxide and high molecular polymer solution is 1:1.2, and then stir for 3h at normal temperature to obtain clear and transparent static electricity Spinning precursor solution;

[0037] (3) Slowly inject the electrospinning precursor solution into the syringe, and then in an environment with an air humidity of 25±5% and a temperature of 20±2°C, the voltage is 10kV, the perfusion rate is 0.5mL / h, and the spinning The wire distance is 10cm, the drum speed of the receiving device is 5r / min, and the process parameters of the slide table speed are ...

Embodiment 2

[0044] A preparation method of zirconium hydroxide nanosheet / nanofiber composite film:

[0045] (1) Dissolve 1 g of polyvinylpyrrolidone (PVP) in 24 g of N'N-dimethylformamide, stir for 5 hours at room temperature until a homogeneous system is formed, and prepare a high molecular polymer solution with a mass fraction of 4%;

[0046] (2) Add 20.8g zirconium isopropoxide to the high molecular polymer solution, the mass ratio of zirconium isopropoxide and high molecular polymer solution is 1:1.2, and then stir for 4h at normal temperature to obtain a clear and transparent electrostatic Spinning precursor solution;

[0047] (3) Slowly inject the electrospinning precursor solution into the syringe, and then in an environment with an air humidity of 26±5% and a temperature of 21±2°C, the voltage is 20kV, the perfusion rate is 1.5mL / h, and the spinning The wire distance is 15cm, the drum speed of the receiving device is 15r / min, and the speed of the slide table is 15cm / min, and the ...

Embodiment 3

[0052] A preparation method of zirconium hydroxide nanosheet / nanofiber composite film:

[0053] (1) Dissolve 1g of polyvinylpyrrolidone (PVP) in a mixed solvent of 12g of ethanol and 12g of n-propanol, stir for 6 hours at room temperature until a homogeneous system is formed, and prepare a high molecular polymer solution with a mass fraction of 4%;

[0054] (2) Add 20.8g zirconium acetate to the high molecular polymer solution, the mass ratio of zirconium acetate and high molecular polymer solution is 1:1.2, and then stir for 5h at room temperature to obtain a clear and transparent electrospinning precursor solution;

[0055] (3) Slowly inject the electrospinning precursor solution into the syringe, and then in an environment with an air humidity of 27±5% and a temperature of 22±2°C, the voltage is 30kV, the perfusion rate is 2.5mL / h, and the spinning The wire distance is 20cm, the drum speed of the receiving device is 25r / min, and the speed of the slide table is 25cm / min, an...

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Abstract

The invention discloses a zirconium hydroxide nanosheet / nanofiber composite membrane and a preparation method thereof. The composite membrane has a multi-level porous structure, wherein the zirconium hydroxide nanosheets are constructed at the surface confinement of the polymer nanofibers, and are uniformly distributed on the surface of the polymer nanofibers; the zirconium hydroxide nanosheets are tortuous shape. The preparation method is as follows: dissolving the high molecular polymer in a solvent to make a high molecular polymer solution; adding zirconium source and electrospinning precursor solution; injecting it into a syringe for electrospinning to obtain a hybrid with uniform fiber diameter The nanofibrous membrane is infiltrated with ammonia water and heated for reaction. The preparation process of the present invention is simple, environmentally friendly and energy-saving, and the prepared super-soft self-supporting zirconium hydroxide nanosheet / nanofiber composite membrane has a multi-level pore structure, super moisture permeability and super high air permeability, and is resistant to erosive chemical warfare agents and Its simulants and neurochemical warfare agents and their simulants have strong adsorption and degradation capabilities.

Description

technical field [0001] The invention relates to a zirconium hydroxide nanosheet / nanofiber composite membrane and a preparation method thereof, in particular to a zirconium hydroxide nanosheet / nanofiber composite membrane for chemical protection and its in-situ growth preparation method, belonging to materials for chemical protection technology field. Background technique [0002] In recent years, since zirconium hydroxide is an amphoteric adsorption material with both acidic bridging hydroxyl functional groups and basic terminal hydroxyl functional groups, it has certain protective properties against various toxic gases, so it has attracted the attention of many scholars in the field of protection. . The disclosed zirconium hydroxide protective materials are: "synchronous protection NH 3 / SO 2 Zirconium hydroxide protective material preparation method" (CN202010143137.8), adding zirconium chloride octahydrate to deionized water, adding ammonia water, and putting it into a...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): D06M11/46D06M101/18D06M101/24D06M101/28
CPCD06M11/46D06M2101/18D06M2101/28D06M2101/24
Inventor 斯阳夏雪廖亚龙陈文焜丁彬俞建勇
Owner DONGHUA UNIV
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