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An infrared coating compatible with radar stealth and its preparation method

A radar stealth and infrared coating technology, which is applied in coatings, fireproof coatings, camouflage coatings, etc., can solve the problems of poor equipment shape matching, reduced radar stealth performance, and low applicability, so as to achieve good equipment shape matching and improve The effect of comprehensive stealth performance and simple process

Active Publication Date: 2021-10-22
LUOYANG INST OF CUTTING EDGE TECH +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] In the past, infrared radar compatible stealth coatings had a high dielectric constant due to the large amount of unscreened high-conductivity pigments and fillers, thick coatings, and no dielectric regulation, which had a high resistance to radar waves. Reflectivity, which greatly reduces the radar stealth performance of compatible stealth materials
In addition, structurally compatible stealth materials such as photonic crystal films and frequency-selective surfaces, etc., are not highly applicable to engineering due to their complex processing technology, high cost, and poor matching with equipment shapes.

Method used

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  • An infrared coating compatible with radar stealth and its preparation method

Examples

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preparation example Construction

[0023] The preparation method of the temperature-resistant infrared low emissivity coating provided by the invention comprises the following steps:

[0024] Such as figure 1 As shown in step S101, take 66-72 parts of resin binder, 28-34 parts of aluminum powder, 8-24 parts of pigments and fillers, and 10-20 parts of color paste and mix them evenly to prepare pre-dispersed slurry. The high-speed disperser stirs at 200-450rpm for 0.4-0.8h to implement the mixing of resin binder, aluminum powder, pigments and fillers and color paste. Preferably, weigh 68 parts of resin binder, 27 parts of aluminum powder, 16 parts of pigment and filler, and 15 parts of color paste, stir with a high-speed disperser at 300 rpm for 0.6 h, and add diluent while stirring. Among them, the pigments and fillers are low-dielectric pigments and fillers with a low dielectric constant, such as low-dielectric pigments and fillers with a dielectric constant less than 3.0, and the resin binder is polyurethane,...

Embodiment 1

[0033] 1. Weigh 66 parts of resin binder polyurethane, add 34 parts of aluminum powder, add 8 parts of low-dielectric pigment filler polytetrafluoroethylene, add 15 parts of blue (or green or yellow or black color paste) , stir with a high-speed disperser at 450rpm for 0.4h, and add an appropriate amount of diluent ethyl acetate while stirring;

[0034] 2. Put the stirred pre-dispersed slurry at room temperature for 24 hours, or put it into a ball mill tank (the diameter of the grinding beads is greater than 8mm) and mill it on a planetary ball mill at 20rpm with variable speed for 8 hours, then let it stand for 1 hour;

[0035] 3. Properly dilute the pre-dispersed slurry, put it into a laboratory sand mill for grinding (the diameter of the grinding medium is greater than 0.8mm), and put it into the mixing tank after grinding for 0.4h;

[0036] 4. Add the appropriate diluent ethyl acetate to the ground material and stir it with a high-speed disperser at a speed of 450rpm. During...

Embodiment 2

[0042] 1. Weigh 72 parts of resin binder polyurethane, add 34 parts of aluminum powder, add 24 parts of low-dielectric pigment filler polyimide, add 20 parts of green color paste, and stir at 200rpm with a high-speed disperser 0.8h, while stirring, add an appropriate amount of diluent butyl acetate;

[0043] 2. Put the stirred pre-dispersed slurry at room temperature for 48 hours, or put it into a ball mill tank (the diameter of the grinding beads is greater than 8mm) and mill it on a planetary ball mill at 60rpm with variable speed for 8 hours, then let it stand for 3 hours;

[0044] 3. Properly dilute the pre-dispersed slurry, put it into a laboratory sand mill for grinding (the diameter of the grinding medium is greater than 0.8mm), and put it into the mixing tank after grinding for 0.3h;

[0045] 4. Add the appropriate diluent butyl acetate to the ground material and stir it with a high-speed disperser at a speed of 400rpm. During the stirring process, add an appropriate a...

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Abstract

The invention provides a method for preparing an infrared coating compatible with radar stealth, comprising: mixing 66-72 parts of resin binder, 28-34 parts of aluminum powder, 8-24 parts of pigment filler, and 10-20 parts of color paste Uniformly to prepare pre-dispersed slurry; add diluent and rheological additives to the pre-dispersed slurry to adjust the viscosity of the pre-dispersed slurry to the range of 13-18s; add curing agent to the pre-dispersed slurry, Disperse uniformly to prepare infrared paint compatible with radar stealth; spray the infrared paint compatible with radar stealth on the wave-absorbing material to obtain a coating; and surface-dry the coating. The radar-compatible infrared coating of the invention can be applied to various types of radar stealth materials to realize infrared radar-compatible stealth, and has the advantages of low cost, excellent performance, and good matching with the appearance of equipment.

Description

technical field [0001] The invention belongs to the technical field of functional coating materials, and more specifically relates to an infrared coating compatible with radar stealth and a preparation method thereof. Background technique [0002] At this stage, stealth technologies include radar stealth, infrared stealth, laser stealth, acoustic stealth, and visible light stealth. At present, in the target detection of military aircraft, radar is about 60%, infrared 30%, and other 10%. Therefore, the main threat in the military field is still radar and infrared detection. Stealth technology research also focuses on radar and infrared stealth, while controlling other signal characteristics such as laser, sound, and visible light, in order to obtain multifunctional, high-performance stealth functional materials and structural materials. [0003] However, studies have shown that radar absorbing materials require materials with high absorption and low reflection, but the abso...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C09D175/04C09D183/08C09D127/12C09D5/30C09D7/61
CPCC08K2003/0812C08L2201/08C08L2205/03C09D5/18C09D5/30C09D127/12C09D175/04C09D183/08C08L27/18C08K3/34C08K3/08C08L79/08C08K3/346C08L23/06C08K3/36C08L79/02C09D5/00C09D183/04
Inventor 不公告发明人
Owner LUOYANG INST OF CUTTING EDGE TECH
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