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Infrared camouflage paint and preparation method thereof

A stealth coating and infrared technology, which is applied in the field of polymer composite material preparation, can solve the problems of coating limitation, poor coating tolerance, increased emissivity, etc., and achieve improved processing performance, improved stability, and enhanced heat transfer performance Effect

Inactive Publication Date: 2012-04-18
LANZHOU UNIVERSITY OF TECHNOLOGY
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0006] In the field of military thermal infrared camouflage, low-emissivity materials, especially low-emissivity coatings, have been the focus of research in the early days. This type of coating mainly uses low-emissivity materials such as aluminum powder and brass powder as infrared absorbers, and has the following shortcomings : (1) It is difficult to be compatible with the camouflage of visible light, especially the radar band; (2) The coating has poor tolerance to pollution, and dust and moisture can significantly increase its emissivity
Therefore, the application of low-emissivity coatings has been greatly restricted
[0007] The low-emissivity infrared stealth materials of the background technology are not compatible with visible light, especially the camouflage in the radar band, and the coating has poor tolerance to pollution. Dust and moisture can significantly increase the emissivity and reduce the stealth effect

Method used

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  • Infrared camouflage paint and preparation method thereof
  • Infrared camouflage paint and preparation method thereof
  • Infrared camouflage paint and preparation method thereof

Examples

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preparation example Construction

[0051] The preparation method of infrared stealth coating, carries out batching according to above-mentioned components, and its steps are:

[0052] (1) The preparation steps of melamine-formaldehyde prepolymer are:

[0053] Add the formulated amount of melamine, formaldehyde and deionized water into the four-necked bottle equipped with electric stirring, condenser, thermometer, feeding port and water bath heating in sequence, and the water bath is heated to 75 ° C. After the bulk material system is transparent, use 10% Triethanolamine aqueous solution is adjusted to pH = 8-9, and then reacted at a constant temperature for 30 minutes to prepare a melamine-formaldehyde prepolymer, which is discharged and set aside;

[0054] (2) The preparation steps of paraffin core material emulsion are:

[0055] ① Add the deionized water and emulsifier 2 in the prescribed amount into a three-port container equipped with a thermometer, mechanical stirring and condensing device, heat the water...

Embodiment 1

[0069] The preparation of embodiment 1.MF prepolymer

[0070] Add 20.2g of melamine, 38.9g of 37% formaldehyde and 110.4g of deionized water into a four-neck bottle equipped with electric stirring, condenser, thermometer, feeding port and water bath heating in sequence, and heat the water bath to 75°C. After the material system becomes transparent , use 10% triethanolamine aqueous solution to adjust pH=8-9, then react at constant temperature for 30 minutes to prepare MF prepolymer, discharge and set aside.

Embodiment 2

[0071] Embodiment 2. The preparation of core material emulsion

[0072] (1) Preparation of paraffin core material emulsion

[0073] ①Add 164.0g of deionized water and 13.6g of emulsifier op-10 into a three-port container equipped with a thermometer, mechanical stirring and condensing device, heat the water bath to 65°C, stir at 300-400r / min for 20min, and obtain an emulsifier aqueous solution , discharge, and set aside; ②Add 40g of paraffin and 2.4g of emulsifier span-80 into the emulsification reactor, heat and melt and stir at 1000r / min, stop heating and keep warm when the material reaches 65°C, and continue stirring for 20min; ③In At a stirring speed of 1000r / min, divide the emulsifier aqueous solution into 5 parts and add them to the emulsification reactor in batches, with an interval of 5 minutes each time. After the last batch of emulsifier aqueous solution is added, directly adjust the stirring speed to 4000r / min and stir for 40 minutes. Prepare paraffin wax emulsion, ...

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Abstract

The invention discloses infrared camouflage paint and a preparation method thereof. The infrared camouflage paint uses three different phase change materials with different phase transition temperature ranges as the core materials and melamine-formaldehyde resin as the wall material; and the in-situ polymerization method is adopted to prepare phase change microcapsules which are used as the temperature controlling material to be added in the infrared camouflage paint, thus the temperature of the target can be regulated, the thermal infrared radiation intensity of the target can be controlled, the aim of infrared camouflage can be achieved and the infrared camouflage requirement of the protected target can be met at about 10-60 DEG C. By adopting the paint, the defects of the low emissivity infrared camouflage material that the paint and the visible light are difficult in compatibility, especially in the radar frequency band, the tolerance of the paint on the pollution is poor, the emissivity can be obviously increased owning to dust and water and the camouflage effect is lowered, can be overcome.

Description

technical field [0001] The invention relates to the preparation of polymer composite materials. Background technique [0002] Due to the universality of infrared radiation from objects, the difference between target and background infrared radiation, and the passivity of thermal reconnaissance, thermal infrared detection is playing an increasingly important role in modern military reconnaissance and surveillance. under threat. Especially moving targets, such as airplanes, tanks, warships and missile loading vehicles, all have high-power power sources, which will generate strong thermal infrared radiation when moving. Some high-speed moving targets, such as airplanes, missiles, etc., are also sources of thermal infrared radiation when their shells rub against the atmosphere during flight. [0003] The atmospheric infrared window has the following three bands: 1-2.5 μm, 3-5 μm and 8-14 μm. Infrared radiation is basically opaque outside these three bands, and the infrared ra...

Claims

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Application Information

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IPC IPC(8): C09D133/00C09D7/12B01J13/02C08G12/32
Inventor 崔锦峰马永强杨保平周应萍郭军红李延华刘永强李军
Owner LANZHOU UNIVERSITY OF TECHNOLOGY
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