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Method for preparing perfluor liquid injection type transparent flexible anti-icing thin film through electrostatic spinning

A technology of electrospinning and liquid injection, applied in filament/thread forming, textile and papermaking, non-woven fabrics, etc., can solve the problem of not being able to have high transparency and flexibility at the same time, and achieve good anti-icing effect and good anti-ice effect. Ice effect, high transparency and soft effect

Active Publication Date: 2015-11-18
BEIHANG UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

It aims to solve the problem that the traditional perfluorinated liquid-injected porous surface cannot have high transparency and flexibility at the same time, so as to provide better materials for the anti-icing field

Method used

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  • Method for preparing perfluor liquid injection type transparent flexible anti-icing thin film through electrostatic spinning
  • Method for preparing perfluor liquid injection type transparent flexible anti-icing thin film through electrostatic spinning
  • Method for preparing perfluor liquid injection type transparent flexible anti-icing thin film through electrostatic spinning

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0060] Example 1: The preparation of K100-PVDF-PET transparent and flexible anti-icing film, the specific steps are:

[0061] Step 1: preparing electrospinning precursor solution;

[0062] Weigh 15g of PVDF powder, vacuum dry at 50°C for 24h, dissolve the dried PVDF powder in 85g of DMF, heat, and stir at 80°C for 8h to obtain the electrospinning precursor solution, let stand until the bubbles in the electrospinning precursor solution completely disappear .

[0063] Step 2: Electrospinning to prepare an electrospun membrane;

[0064] Select aluminum foil as the receiving plate, put the electrospinning precursor in step 1 into a 20mL syringe, and place the syringe on a micro-syringe pump, and control the flow rate of the electrospinning precursor to 2.0mL / h. The inner diameter of the electrospinning needle is 0.2mm, the voltage applied by the electrospinning equipment to the electrospinning precursor solution is 25kV, the vertical distance from the spinneret to the receivin...

Embodiment 2

[0073] Example 2: The preparation of PO-PVDF-BOPP transparent and flexible anti-icing film, the specific steps are:

[0074] Step 1: preparing electrospinning precursor solution;

[0075] Weigh 15g of PVDF powder, vacuum dry at 50°C for 24h, dissolve the dried PVDF powder in 85g of DMF, heat, and stir at 80°C for 8h to obtain the electrospinning precursor solution, let stand until the bubbles in the electrospinning precursor solution completely disappear .

[0076] Step 2: Electrospinning to prepare an electrospun membrane;

[0077] Select aluminum foil as the receiving plate, put the electrospinning precursor in step 1 into a 20mL syringe, and place the syringe on a micro-syringe pump, and control the flow rate of the electrospinning precursor to 2.0mL / h. The inner diameter of the electrospinning needle is 0.2mm, the voltage applied by the electrospinning equipment to the electrospinning precursor solution is 25kV, the vertical distance from the spinneret to the receiving...

Embodiment 3

[0083] Example 3: The preparation of K100-PH-PET transparent and flexible anti-icing film, the specific steps are:

[0084] Step 1: Configure the electrospinning precursor;

[0085] Weigh 10g of PVDF-HFP copolymer, after vacuum drying at 50°C for 24h, dissolve the dried PVDF-HFP copolymer in 90g of dimethylacetamide and acetone mixture, and stir at 80°C for 8h to obtain the electrospinning precursor , stand still until the bubbles in the electrospinning precursor solution completely disappear.

[0086] Step 2: Electrospinning to prepare an electrospun membrane;

[0087] Select aluminum foil as the receiving plate, put the electrospinning precursor in step 1 into a 20mL syringe, and place the syringe on a micro-syringe pump, and control the flow rate of the electrospinning precursor to 1.0mL / h. The inner diameter of the electrospinning needle is 0.8 mm, the voltage applied by the electrospinning equipment to the electrospinning precursor solution is 20 kV, the vertical dist...

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Abstract

The invention provides a method for preparing a perfluor liquid injection type transparent flexible anti-icing thin film through electrostatic spinning and belongs to the field of interface chemistry. An electrospinning film is prepared on the surface of aluminum foil through the electrospinning technology; the electrospinning film on the surface of the aluminum foil is transferred to the surface of a propping material through alcohol soaking, hot pressing and drying processes, and a porous electrostatic spinning nanofiber film is prepared; perfluor liquid is added to the surface of the porous electrostatic spinning nanofiber membrane dropwise, and the perfluor liquid injection type transparent flexible anti-icing thin film is obtained. The visible light transmittance of the prepared transparent flexible anti-icing thin film is more than 80%, the contact angles between water drops and the surface of the flexible anti-icing thin film are 113 degrees, and the rolling angles are 3 degrees. Most of the regions of the surface of the transparent flexible anti-icing thin film are frostless after 60 min under the condition of the -5 DEG C temperature and the 50% humidity, and the drop setting time is obviously prolonged compared with a traditional hydrophobic film.

Description

technical field [0001] The invention belongs to the field of interface chemistry, and specifically refers to a method for preparing a porous electrospun nanofiber membrane on the surface of a support material, and then injecting a perfluorinated liquid to prepare a perfluorinated liquid injection-type transparent and flexible anti-icing film. Background technique [0002] Traditional anti-icing materials mostly construct micro-nano structures by hydrothermal method, electron beam etching, etc. to form super-hydrophobic surfaces. However, the anti-icing effect of traditional super-hydrophobic surfaces is not significant under high pressure or high humidity conditions. The rough structure is easy to damage or promote the nucleation of ice crystals. The perfluorinated liquid-infused porous surface effectively solves the drawbacks of traditional superhydrophobic surfaces. However, the traditional perfluorinated liquid-injected porous surface cannot have high transparency and fl...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): D04H1/728D04H1/4318D01D5/00D06M15/53D06M13/08D06M13/33
Inventor 郑咏梅高春雷章淼鑫王磊
Owner BEIHANG UNIV
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