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Anti-icing material, preparation method and application thereof

A functional material and anti-icing technology, which is applied in the field of chemical materials and can solve the problems of easy wear and applicable temperature range of materials, poor performance of anti-icing materials, and high energy consumption.

Inactive Publication Date: 2015-06-03
INST OF CHEM CHINESE ACAD OF SCI
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

It solves the problems of poor performance of current anti-icing materials in condensation environment, high energy consumption during defrosting, easy wear of materials and narrow applicable temperature range, etc.

Method used

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  • Anti-icing material, preparation method and application thereof
  • Anti-icing material, preparation method and application thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0031] Example 1: Preparation of oil gel anti-icing material

[0032] At room temperature, mix the purchased commercial polydimethylsiloxane prepolymer and cross-linking agent at a mass ratio of 10:1, stir evenly, centrifuge at 4000r / min for 5min to remove bubbles, and then drain in a vacuum atmosphere at room temperature Air for 30 minutes to remove bubbles in the mixed solution, then gently pour the mixed solution into a clean and dry glass petri dish, calibrate the level, and cure overnight at 80°C to make it fully crosslinked into an elastic silica gel PDMS.

[0033] Cut the prepared PDMS into a suitable size, immerse it in molten paraffin and swell for 5 hours, take out the swollen PDMS, the oil gel, and let it cool at room temperature, then carefully remove the oil gel from the molten liquid with tweezers and lens cleaning paper. Bring out the paraffin for use.

[0034] Other paraffin swellable cross-linked network polymers can also be used to prepare oil gels.

Embodiment 2

[0035] Example 2 Swelling and slow release of alkane molecules in oil gel

[0036] Such as figure 1 The cured PDMS prepared in the embodiment is an elastic transparent solid, and the paraffin-swollen PDMS is a transparent color. PDMS is immersed in molten paraffin, and it has reached half-saturation swelling rate quickly within 0.5h, and then slowly reaches swelling saturation in about 4~5h, saturated swelling ratio is 20.5%, and PDMS cross-linked network absorbs 20.5% of its own mass. Of paraffin.

[0037] The cross-linked network can hold more solvent at high temperature, and the capacity of the solvent is reduced when the temperature is lowered, causing the solvent to squeeze out of the cross-linked network structure. The slow-release surface driven by osmotic pressure forms a liquid film layer on which there are scattered droplets. AFM (tapping mode) shows that the sample surface is as flat as PDMS.

Embodiment 3

[0038] Example 3 DSC characterizes the glass transition temperature of paraffin wax

[0039] Such as figure 2 , For paraffin body phase differential scanning calorimeter (Differential Scanning Calorimeter, DSC) test, at 1℃ / min rate temperature, there is no obvious exothermic peak and endothermic peak, faster at 2℃ / min and 5℃ / min The temperature rate of -20℃ shows an exothermic step change, and the endothermic process is still a gradual change, indicating that the paraffin wax exhibits a glass transition during the temperature change, no phase change occurs, and the enthalpy change is very low.

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PUM

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Abstract

The invention discloses an anti-icing material, a preparation method and an application of the anti-icing material. The anti-icing material comprises a cross-linked network polymer and paraffin, wherein the paraffin is selected from alkane with the carbon atom number of 10-60 or a mixture of the alkane. The invention also provides the preparation method of the material. A paraffin layer slowly released on the surface of an oil gel material is taken as a lubricating layer with the ultralow ice adhesion characteristic, and the low-temperature application range is wider; furthermore, PDMS body cross-linked network provides a support and a storage space for slow release of the lubricating layer, so that the oil gel lubricating layer can be stably and continuously used and becomes an ultralow-adhesion wear-resistant anti-icing material with an ultra-wide low-temperature application range.

Description

Technical field [0001] The invention relates to a material with anti-icing function, a preparation method and application thereof, and belongs to the field of chemical materials. Background technique [0002] Ice coating is a frequent phenomenon in nature, especially in areas with low temperature and high humidity. The occurrence of ice coating causes huge economic and energy losses to production and life. The icing of transmission lines often causes major accidents such as insulator flashovers, tower collapses and line interruptions, which affect the safe operation of the power system. Ice on the surface of the aircraft will reduce the effective load and affect the aerodynamic shape and maneuvering characteristics. The icing of the road can cause slippery roads, which may cause brake failure of motor vehicles and cause serious traffic accidents. Frosting of the refrigerator condenser leads to an increase in power consumption and a decrease in cooling effect, which wastes energ...

Claims

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Application Information

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IPC IPC(8): C09K3/18
Inventor 王健君王亚玲贺志远江雷
Owner INST OF CHEM CHINESE ACAD OF SCI
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