Anti-icing/deicing composite material and preparation method and application thereof

A composite material and composite film technology, applied in the field of anti-icing/de-icing composite materials and their preparation, can solve the problem of inability to maintain de-icing/anti-icing performance and the like

Active Publication Date: 2021-09-14
LANZHOU INST OF CHEM PHYSICS CHINESE ACAD OF SCI +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, the aforementioned titanium dioxide anti-icing / de-icing coatings cannot maintain the de-icing / anti-icing performance under frequent mechanical wear

Method used

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  • Anti-icing/deicing composite material and preparation method and application thereof
  • Anti-icing/deicing composite material and preparation method and application thereof
  • Anti-icing/deicing composite material and preparation method and application thereof

Examples

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preparation example Construction

[0035] The present invention also provides a method for preparing the anti-icing / de-icing composite material described in the above technical solution, comprising the following steps:

[0036] Mixing an organic titanium source, an organic carbon source and an organic solvent to obtain a source solution;

[0037] gelling the source solution to obtain a gel system;

[0038] The gel system is deposited on the surface of the substrate to be deposited by using airgel-assisted chemical vapor deposition to obtain an anti-icing / de-icing composite material.

[0039] In the present invention, unless otherwise specified, the raw materials used are all preferably commercially available products.

[0040] The invention mixes the organic titanium source, the organic carbon source and the organic solvent to obtain the source solution.

[0041] In the present invention, the organic titanium source preferably includes one or more of titanium isopropoxide, isopropyl titanate, ethyl titanate a...

Embodiment 1

[0061] A method for preparing a carbon-doped titanium dioxide film, comprising the steps of:

[0062] 1) First wipe the substrate with absorbent cotton dipped in acetone, then ultrasonically clean it in acetone, absolute ethanol, and three times of distilled water for 10 minutes, then immerse it in piranha solution at 80°C for 1 hour, and then ultrasonically clean it in three times of distilled water 5min, put into the reaction chamber after drying.

[0063] 2) Ultrasonically disperse titanium isopropoxide and acetylacetone (power 250W, time 10min) in toluene to obtain a mass percent concentration of titanium isopropoxide of 5.51wt% and a mass percent content of acetylacetone of 0.387wt%. source solution; feed nitrogen gas (flow rate 0.6L / min), discharge the air in the airgel-assisted chemical vapor deposition device, set the heating rate of the reaction chamber to 10°C / min, and the target temperature to 450°C, after reaching the reaction temperature Turn on the ultrasonic at...

Embodiment 2

[0070] The only difference from Example 1 is that the mass percentage of acetylacetone in the source solution is 1.12wt%.

[0071] The mass content of carbon in the carbon-doped titanium dioxide film was measured by X-ray photoelectron spectroscopy to be 67.1%.

[0072] The surface and cross section of the obtained carbon-doped titanium dioxide film were observed with a JSM-7610F field emission scanning electron microscope, the results are as follows Figure 5 and 6 shown. From Figure 5 and 6 It can be seen that the surface of the obtained carbon-doped titanium dioxide film is nano-scale spherical particles uniformly distributed, and the thickness is 3.1 μm.

[0073] Adopt X-ray energy spectrum (EDX) to measure the chemical composition of gained carbon-doped titanium dioxide film section, the result is as follows Figure 7 Shown, wherein, (b) figure is the X-ray energy spectrogram of (a) figure 1. From Figure 7 It can be seen that the point-scan section of the X-ray e...

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Abstract

The invention belongs to the technical field of anti-icing / deicing, and provides an anti-icing / deicing composite material and a preparation method and application thereof. The anti-icing / deicing composite material comprises a titanium dioxide film and carbon doped in the titanium dioxide film; the carbon exists in the form of graphite carbon; the doping amount of the carbon is 30-75 weight percent. The anti-icing / deicing composite material is finally a brownish black or black film due to the doping of carbon, the composite material with the color has a good absorption effect on visible light, ultraviolet light and infrared light, and along with the increase of illumination time, the temperature of the surface of the composite material is increased, so that ice / frost can be melted, and the surface of the composite material is prevented from being frozen / frosted, i.e. the composite material provided by the invention has a good photothermal effect and can be used for preventing icing. The carbon in the composite material is pulled out as a self-lubricating material in the friction process and forms a layer of lubricating film on the friction interface through the friction behavior so that the frictional wear is reduced.

Description

technical field [0001] The invention relates to the field of anti-icing / de-icing technology, in particular to an anti-icing / de-icing composite material and its preparation method and application. Background technique [0002] Ice buildup on solid surfaces can cause serious damage and accidents. At present, the commonly used anti-icing / de-icing layer material is titanium dioxide, especially titanium dioxide in the form of anatase has high photocatalytic efficiency, and the energy band gap is 3.2eV. However, the above-mentioned titanium dioxide anti-icing / deicing coatings cannot maintain the deicing / anti-icing performance under frequent mechanical wear. Contents of the invention [0003] In view of this, the object of the present invention is to provide an anti-icing / de-icing composite material and its preparation method and application. The anti-icing / deicing composite material provided by the invention has both excellent deicing / anti-icing performance and wear resistance...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C09K3/18
CPCC09K3/185C09K3/18
Inventor 张霞王可丽王晓波刘维民
Owner LANZHOU INST OF CHEM PHYSICS CHINESE ACAD OF SCI
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