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High thermal conductivity electrospun film suitable for dye separation, preparation method and application

A technology of electrospinning and high thermal conductivity, which is applied in the manufacture of rayon, textiles and paper, and single-component synthetic polymer rayon. good capacitive effect

Active Publication Date: 2021-04-30
SHANGHAI UNIVERSITY OF ELECTRIC POWER
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

At present, polymer-based thermally conductive composite materials have been prepared by filling thermally conductive fillers such as carbon nanotubes, aluminum nitride, silicon dioxide, and silicon carbide. However, there is a problem that the material loses flexibility due to high filling amount or high filling amount.

Method used

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  • High thermal conductivity electrospun film suitable for dye separation, preparation method and application
  • High thermal conductivity electrospun film suitable for dye separation, preparation method and application
  • High thermal conductivity electrospun film suitable for dye separation, preparation method and application

Examples

Experimental program
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Effect test

Embodiment 1

[0042] A method for preparing a high thermal conductivity electrospinning film suitable for dye separation. The composite filament diameter is 5 ~500nm, polyvinyl alcohol / boron nitride nanocomposite film with a film thickness of 1μm~5mm, such as Figure 10 shown. Include the following steps:

[0043]Take commercially available boron nitride powder and p-aminobenzenesulfonic acid at a mass ratio of 1:1 to 1:40. In this example, take 1 g of commercially available boron nitride powder and 5 g of p-aminobenzenesulfonic acid and add them to the polytetrafluoroethylene ball mill In the tank, the commercially available boron nitride powder can be the powder of commercially available boron nitride nanosheets, the powder of commercially available boron nitride nanotubes, the commercially available boron nitride nanowhiskers, or the above three For the combination of two or more of them, in this implementation, choose commercially available boron nitride nanosheet powder, add commerci...

Embodiment 2 and Embodiment 3

[0051] The difference from Example 1 is that the amount of boron nitride nanofiller used is different, and the amount of boron nitride nanofiller in Examples 2 and 3 is 0.02g and 0.1g respectively. The obtained products have the same appearance and similar microscopic appearance. With the increase of the boron nitride nano-filler addition, the boron nitride nano-filler of the polyvinyl alcohol / boron nitride nanocomposite film is more densely dispersed, and the adsorption effect and thermal conductivity of the composite film Differences.

[0052] Figure 8 It is the ultraviolet spectrogram after the polyvinyl alcohol / boron nitride nanocomposite film adsorption dye that makes in embodiment 1,2,3, can find that when the boron nitride nanofiller filling amount is 1.0wt% (embodiment 2) when the polyvinyl alcohol / boron nitride nanocomposite film has the best overall adsorption effect on dyes, and when the boron nitride nanofiller filling amount is 5.0wt% (embodiment 3), the polyvin...

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Abstract

The invention relates to a high thermal conductive electrospinning film suitable for dye separation and its preparation method and application. Functionalized boron nitride nanomaterials are used as thermal conductive fillers, and uniform boron nitride nanomaterials are prepared by simple ultrasonic and mechanical stirring. Filler / polyvinyl alcohol spinning solution, followed by electrospinning to prepare polyvinyl alcohol / boron nitride nanocomposite membrane, which is a high thermal conductivity electrospinning film suitable for dye separation. Compared with the prior art, the polyvinyl alcohol / boron nitride nanocomposite membrane prepared by the present invention has a certain separation effect on dyes, and has better thermal conductivity than pure polyvinyl alcohol membranes, and the production method is simple , the raw material is easy to get. Facing the current high requirements for the use of materials, the materials prepared by the present invention have potential wider applications in sewage treatment, heat conduction and heat dissipation, and the like.

Description

technical field [0001] The invention belongs to the technical field of membrane separation materials, and in particular relates to a high thermal conductivity electrostatic spinning film suitable for dye separation, a preparation method and application. Background technique [0002] Environmental pollution has become a serious problem on a global scale, because they not only have a great impact on human health, but also have an extremely significant negative impact on the sustainable development of society, so they need to be resolved urgently. The water pollution problem is one of the most serious problems in the environmental pollution problem, which is related to the discharge of various organic dyes and heavy metal ions and the leakage of crude oil and petroleum products, and it is becoming more and more serious. Currently, many strategies or new materials have been developed to treat wastewater. Among these materials, membrane materials have been noticed by humans. Th...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): D04H1/728D04H1/4309D01F6/50D01F1/10C02F1/44
CPCC02F1/44D01F1/10D01F6/50D04H1/4309D04H1/728
Inventor 范金辰尹传根闵宇霖徐群杰
Owner SHANGHAI UNIVERSITY OF ELECTRIC POWER
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