Silver nanowire-polyperfluorinated ethylene propylene super-hydrophobic porous membrane and preparation method

A polyperfluoroethylene propylene and silver nanowire technology is applied in the field of composite materials, which can solve the problems of difficult control or adjustment of membrane pore structure, poor antibacterial performance of superhydrophobic porous membrane, and lack of antibacterial function of membrane material, and achieves good superhydrophobicity. Hydrophobic properties, dynamic control or adjustment of membrane pore structure, super-hydrophobicity and strong self-cleaning ability

Active Publication Date: 2019-01-04
上海优梯熙光学材料有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

The antibacterial performance of the superhydrophobic porous membrane made by the invention is poor, which affects the durability of use
[0007] In summary, the preparation of super-hydrophobic porous membranes in the existing technology has the disadvantages that the membrane pore structure is difficult to control or adjust, the preparation process is complicated, and the prepared membrane material does not have antibacterial function. Therefore, a superhydrophobic membrane with antibacterial properties has been developed. Porous membranes are of great significance

Method used

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  • Silver nanowire-polyperfluorinated ethylene propylene super-hydrophobic porous membrane and preparation method

Examples

Experimental program
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Effect test

Embodiment 1

[0033] (1) Add polystyrene to a mixed solvent of dichloromethane and chloroform, add acetone, stir to completely dissolve polystyrene to obtain a casting solution, then cast the casting solution on the surface of the substrate, and immediately use the The water-saturated high-humidity air passes through the surface of the casting liquid, and the honeycomb polystyrene porous membrane is prepared through the formation of water drop templates and the volatilization of solvent and water; the relative humidity of the high-humidity air is 94%, and the flow line speed is 16L / min; In the casting solution, 17 parts by weight of polystyrene, 34 parts by weight of dichloromethane, 42 parts by weight of chloroform, and 7 parts by weight of acetone;

[0034] (2) Mix liquid tetrafluoroethylene, liquid hexafluoroethylene, organic peroxide initiator, and molecular weight regulator evenly, and defoam to obtain a reaction liquid, and then cast it on the polystyrene porous membrane prepared in s...

Embodiment 2

[0038] (1) Add polystyrene to a mixed solvent of dichloromethane and chloroform, add acetone, stir to completely dissolve polystyrene to obtain a casting solution, then cast the casting solution on the surface of the substrate, and immediately use the The water-saturated high-humidity air passes through the surface of the casting liquid, and the honeycomb polystyrene porous membrane is prepared through the formation of water drop templates and the volatilization of solvent and water; the relative humidity of the high-humidity air is 92%, and the flow line speed is 12L / min; In the casting solution, 16 parts by weight of polystyrene, 32 parts by weight of methylene chloride, 47 parts by weight of chloroform, and 5 parts by weight of acetone;

[0039] (2) Mix liquid tetrafluoroethylene, liquid hexafluoroethylene, organic peroxide initiator, and molecular weight regulator evenly, and defoam to obtain a reaction liquid, and then cast it on the polystyrene porous membrane prepared i...

Embodiment 3

[0043] (1) Add polystyrene to a mixed solvent of dichloromethane and chloroform, add acetone, stir to completely dissolve polystyrene to obtain a casting solution, then cast the casting solution on the surface of the substrate, and immediately use the The water-saturated high-humidity air passes through the surface of the casting liquid, and the honeycomb polystyrene porous membrane is prepared through the formation of water drop templates and the volatilization of solvent and water; the relative humidity of the high-humidity air is 98%, and the flow line speed is 18L / min; In the casting solution, 19 parts by weight of polystyrene, 37 parts by weight of dichloromethane, 37 parts by weight of chloroform, and 7 parts by weight of acetone;

[0044] (2) Mix liquid tetrafluoroethylene, liquid hexafluoroethylene, organic peroxide initiator, and molecular weight regulator evenly, and defoam to obtain a reaction liquid, and then cast it on the polystyrene porous membrane prepared in s...

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Abstract

The invention provides a silver nanowire-polyperfluorinated ethylene propylene super-hydrophobic porous membrane and a preparation method. The method comprises the following steps: first, preparing acellular polystyrene porous membrane according to a breath figure method, and performing reverse repeated etching by taking the polystyrene porous membrane as a template to produce a polyperfluorinated ethylene porous membrane with micro-nanograde bulge array, and further depositing a layer of etching silver nanowire orientation film on the surface of the polyperfluorinated ethylene porous membrane, thereby producing the silver nanowire-polyperfluorinated ethylene propylene super-hydrophobic porous membrane. Compared with the traditional method, the super-hydrophobic porous membrane prepared according to the method of the invention is not only large in water contact angle, small in rolling angle, and strong in super-hydrophobic capacity and self-cleaning ability, but also has high antibacterial capability; the preparation method is simple, the membrane pore structure can be dynamically controlled or regulated, and the pollution cannot be produced.

Description

technical field [0001] The invention belongs to the technical field of composite materials, and provides a silver nanowire-polyperfluoroethylene propylene superhydrophobic porous membrane and a preparation method thereof. Background technique [0002] In recent years, the superhydrophobic phenomenon of plant leaves has attracted people's attention. The so-called superhydrophobic ability of plants means that the leaves of plants have significant hydrophobicity, desorption, anti-sticking, self-cleaning functions, etc. The reason why the lotus "comes out of the mud without being stained" is because its surface has a layer of super-hydrophobic film, which can make it have the function of self-cleaning. Superhydrophobic membrane materials have excellent properties such as waterproof, anti-fouling, and can reduce the viscosity of fluids, and are currently one of the hotspots in the research of functional materials. [0003] The basic theoretical research on superhydrophobic memb...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B01D69/02B01D71/32B01D67/00
CPCB01D67/0079B01D69/02B01D71/32B01D2325/38B01D2325/48
Inventor 蔡杰
Owner 上海优梯熙光学材料有限公司
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