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Automatic-temperature-control electrothermal coating for ice removal and prevention of railway vehicles, and preparation method and application thereof

A technology for electrothermal coatings and railway vehicles, which is applied in epoxy resin coatings, polyurea/polyurethane coatings, coatings, etc., can solve the problems of undisclosed self-temperature control of coatings, thick heating coatings, and thick electrothermal coatings, etc. Achieve the effect of eliminating the process of installation and running tests, reducing the difficulty of installation and reducing the thickness of the coating

Active Publication Date: 2019-01-01
METALS & CHEM RES INST CHINA ACAD OF RAILWAY SCI +3
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Therefore, the electrothermal coating becomes thick and heavy, and it is easy to fall off after being impacted by high-speed wind and sand, so it is not suitable for railway vehicles.
It can be seen that these patents / patent applications do not disclose the self-temperature control of the coating, nor do they propose an application scheme on rolling stock
At the same time, limited by the coating system of railway vehicles, the heat-generating coating is required to have a thinner thickness and higher coating adhesion. However, the heat-generating coating in the existing patent is thicker, prone to cracking and falling off, which cannot meet the needs of railways. Rolling Stock Requirements for Electrothermal Coatings
Therefore, in the prior art, there is neither an application example of using electrothermal materials on rolling stock, nor an electrothermal coating and its application method suitable for the technical field of deicing and anti-icing of railway vehicles.

Method used

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  • Automatic-temperature-control electrothermal coating for ice removal and prevention of railway vehicles, and preparation method and application thereof
  • Automatic-temperature-control electrothermal coating for ice removal and prevention of railway vehicles, and preparation method and application thereof
  • Automatic-temperature-control electrothermal coating for ice removal and prevention of railway vehicles, and preparation method and application thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0069]

[0070]

[0071] Add the alkyl-modified carbon nanotubes, conductive carbon black and conductive titanium dioxide to the polyether polyurethane resin in proportion, then add the solvent propylene glycol methyl ether acetate and methyl isobutyl ketone and stir at a speed of 1500rpm for 0.5h Finally, ultrasonicate at 20°C and 40kHz for 20min, then continue to add various additives while stirring at a speed of 1000rpm (add in order of defoamer, dispersant, rheological agent, and drier), and finally add curing The dose is ready.

[0072]Spray the paint on the deicing and anti-icing parts of the locomotives. After it dries, spread copper paste electrodes on the surface according to the needs and existing conditions. The control module turns on or off the heating module, which can be used to prevent and remove icing of the rolling stock.

Embodiment 2

[0074]

[0075]

[0076] Add brominated n-hexadecane modified carbon nanotubes, graphite, graphene, conductive zinc powder and silver powder to bisphenol A epoxy resin E44 in proportion, and then add solvent methyl isobutyl ketone and butyl acetate After stirring with chloroform at a speed of 1000rpm for 1h, ultrasonic at 30°C and 60kHz for 40min, then continue to add various additives while stirring at a speed of 800rpm (according to defoamer, dispersant, rheological agent, catalyst, etc.) Add the dry agent sequentially), and finally add the curing agent.

[0077] Brush the paint on the deicing and anti-icing parts of the locomotives. After it dries, spread silver paste electrodes on the surface according to the needs and existing conditions. The heating module is turned on or off by using the control module, which can be used to prevent and remove the icing of the rolling stock.

Embodiment 3

[0079]

[0080]

[0081] Add bromo-n-hexadecane modified carbon nanotubes, graphene, and silver-coated graphite powder into hydroxyacrylic resin in proportion, then add solvent toluene and methyl ethyl ketone at a speed of 1000rpm and stir for 1h. Ultrasound for 30 minutes, then continue to add various additives while stirring at a speed of 1000rpm (add in the order of defoamer, dispersant, rheological agent, and drier), and finally add curing agent.

[0082] Roll-coat the paint on the deicing and anti-icing parts of the locomotive and wait for it to dry. Spread copper wire electrodes on the surface according to the needs and existing conditions. After the power is turned on, use the ability of the coating film to conduct current to convert electrical energy into heat energy. The heating module is turned on or off by using the control module, which can be used to prevent and remove the icing of the rolling stock.

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Abstract

The invention provides an automatic-temperature-control electrothermal coating for ice removal and prevention of railway vehicles, and a preparation method and application thereof. The automatic-temperature-control electrothermal coating comprises 15% to 58% of matrix resin, 0.5% to 17% of a curing agent, 5% to 40% of a conductive material, 1% to 22% of an auxiliary agent, and 18% to 70% of a solvent.

Description

technical field [0001] The invention belongs to the technical field of antifreeze and snow removal for railway transportation, and in particular relates to a self-temperature-control electrothermal coating for deicing and anti-icing of railway vehicles, a preparation method and application thereof. Background technique [0002] As my country's railways extend to Tibet, Qinghai and other alpine regions, railway rolling stock inevitably faces the problem of ice and snow during winter operation. If the locomotives and vehicles operating in snowy areas for a long time do not take special treatment, flying snowflakes will enter the gaps of mechanical components such as bogies and electrical connectors, and will hinder the normal operation of these components after melting, solidifying and expanding. After the brake shoes and brake pads are attached to ice and snow, the braking efficiency will be reduced at the beginning of braking, which will affect the reliability of train braki...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C09D175/08C09D163/00C09D133/14C09D7/62C09D7/61
CPCC08K2003/2241C08K2003/2296C08K2201/001C08K2201/011C09D133/066C09D163/00C09D175/08C09D7/61C09D7/62C08K9/04C08K3/041C08K3/04C08K3/22C08K9/10
Inventor 赵云行陈梦杜卫超王伟
Owner METALS & CHEM RES INST CHINA ACAD OF RAILWAY SCI
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