CN110711688A - Preparation method of coating type stealth coating - Google Patents
Preparation method of coating type stealth coating Download PDFInfo
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- CN110711688A CN110711688A CN201910831730.9A CN201910831730A CN110711688A CN 110711688 A CN110711688 A CN 110711688A CN 201910831730 A CN201910831730 A CN 201910831730A CN 110711688 A CN110711688 A CN 110711688A
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B05—SPRAYING OR ATOMISING IN GENERAL; APPLYING FLUENT MATERIALS TO SURFACES, IN GENERAL
- B05D—PROCESSES FOR APPLYING FLUENT MATERIALS TO SURFACES, IN GENERAL
- B05D7/00—Processes, other than flocking, specially adapted for applying liquids or other fluent materials to particular surfaces or for applying particular liquids or other fluent materials
- B05D7/14—Processes, other than flocking, specially adapted for applying liquids or other fluent materials to particular surfaces or for applying particular liquids or other fluent materials to metal, e.g. car bodies
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- C—CHEMISTRY; METALLURGY
- C09—DYES; PAINTS; POLISHES; NATURAL RESINS; ADHESIVES; COMPOSITIONS NOT OTHERWISE PROVIDED FOR; APPLICATIONS OF MATERIALS NOT OTHERWISE PROVIDED FOR
- C09D—COATING COMPOSITIONS, e.g. PAINTS, VARNISHES OR LACQUERS; FILLING PASTES; CHEMICAL PAINT OR INK REMOVERS; INKS; CORRECTING FLUIDS; WOODSTAINS; PASTES OR SOLIDS FOR COLOURING OR PRINTING; USE OF MATERIALS THEREFOR
- C09D201/00—Coating compositions based on unspecified macromolecular compounds
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- C—CHEMISTRY; METALLURGY
- C09—DYES; PAINTS; POLISHES; NATURAL RESINS; ADHESIVES; COMPOSITIONS NOT OTHERWISE PROVIDED FOR; APPLICATIONS OF MATERIALS NOT OTHERWISE PROVIDED FOR
- C09D—COATING COMPOSITIONS, e.g. PAINTS, VARNISHES OR LACQUERS; FILLING PASTES; CHEMICAL PAINT OR INK REMOVERS; INKS; CORRECTING FLUIDS; WOODSTAINS; PASTES OR SOLIDS FOR COLOURING OR PRINTING; USE OF MATERIALS THEREFOR
- C09D5/00—Coating compositions, e.g. paints, varnishes or lacquers, characterised by their physical nature or the effects produced; Filling pastes
- C09D5/02—Emulsion paints including aerosols
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- C—CHEMISTRY; METALLURGY
- C09—DYES; PAINTS; POLISHES; NATURAL RESINS; ADHESIVES; COMPOSITIONS NOT OTHERWISE PROVIDED FOR; APPLICATIONS OF MATERIALS NOT OTHERWISE PROVIDED FOR
- C09D—COATING COMPOSITIONS, e.g. PAINTS, VARNISHES OR LACQUERS; FILLING PASTES; CHEMICAL PAINT OR INK REMOVERS; INKS; CORRECTING FLUIDS; WOODSTAINS; PASTES OR SOLIDS FOR COLOURING OR PRINTING; USE OF MATERIALS THEREFOR
- C09D5/00—Coating compositions, e.g. paints, varnishes or lacquers, characterised by their physical nature or the effects produced; Filling pastes
- C09D5/32—Radiation-absorbing paints
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B05—SPRAYING OR ATOMISING IN GENERAL; APPLYING FLUENT MATERIALS TO SURFACES, IN GENERAL
- B05D—PROCESSES FOR APPLYING FLUENT MATERIALS TO SURFACES, IN GENERAL
- B05D2202/00—Metallic substrate
- B05D2202/20—Metallic substrate based on light metals
- B05D2202/25—Metallic substrate based on light metals based on Al
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- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08K—Use of inorganic or non-macromolecular organic substances as compounding ingredients
- C08K2201/00—Specific properties of additives
- C08K2201/011—Nanostructured additives
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- Chemical & Material Sciences (AREA)
- Life Sciences & Earth Sciences (AREA)
- Engineering & Computer Science (AREA)
- Wood Science & Technology (AREA)
- Materials Engineering (AREA)
- Organic Chemistry (AREA)
- Dispersion Chemistry (AREA)
- Application Of Or Painting With Fluid Materials (AREA)
Abstract
The invention discloses a preparation method of a coating type stealth coating, which comprises the following steps: weighing the binder and the diluent in corresponding proportion, and mixing for later use to obtain a coating A; weighing wave absorbing agents in corresponding proportion, and mixing the wave absorbing agents with the coating A for later use to obtain a coating B; selecting an aluminum plate, and polishing for later use; uniformly spraying the coating B on an aluminum plate for multiple times; and (6) curing and testing. The coating type stealth coating is composed of a wave-absorbing coating, and the wave-absorbing coating comprises a raw material binder, a wave-absorbing agent and a diluent. The invention has simple preparation process, simple raw material, uniform surface density, excellent wave-absorbing performance and other excellent mechanical properties of the coating.
Description
Technical Field
The invention relates to the technical field of coatings, in particular to a preparation method of a coating type stealth coating.
Background
With the development of scientific technology, radar reconnaissance is one of the most used and most effective reconnaissance means in the world at present, so that the radar stealth technology becomes the most important stealth technology, and on the basis of the radar stealth technology, colleges and universities, research institutes and enterprises at home and abroad carry out a great deal of experimental research on the radar stealth technology. The radar scouting is used for scouting a target object through electromagnetic waves and is mainly used for finding and identifying targets such as airplanes, missiles, satellites and the like and determining the position movement speed, the track and the like of the targets, and the radar stealth coating aims to eliminate the possibility that the targets are scouted by the radar to the maximum extent. At present, the research on the radar stealth technology mainly focuses on wave-absorbing materials and structural design. The radar stealth coating is well applied to military industry, such as Jian-20 in China, F-22 in the United states and T-50 in Russia.
With the development of electronic technology, information technology, and military technology, electromagnetic waves are the most commonly used information carriers in all aspects of life. Highly integrated and mobile electronic products obviously improve the living standard, but the use of a large amount of electromagnetic waves seriously threatens the life of people, and the interference of the electromagnetic waves on daily communication signals is also becoming serious. Therefore, the research on the coating type stealth coating has great significance for improving the living environment of people, ensuring the electronic information safety and improving the stealth performance of buildings.
In both military and civil fields, the quantity of the wave-absorbing coating has larger requirements, but the preparation process and the construction process in the prior art are complex, and the later maintenance is complicated, so that the mass production cannot be realized; the mixing of the wave absorbing agent and the binder can change the related properties of the original coating, such as strength, toughness, environmental resistance and the like of the material to a certain extent, but the incorporation of the wave absorbing agent in the prior art can reduce the excellent properties of the binder, and meanwhile, the wave absorbing agent cannot be uniformly dispersed in the binder and can keep the properties stable for a long time.
Disclosure of Invention
Aiming at the defects of the prior art, the invention provides the preparation method of the coating type wave-absorbing coating, which has the advantages of simple preparation process and construction process, no pollution, uniform surface density distribution, excellent wave-absorbing performance of the coating and good mechanical property of the coating.
In order to achieve the above purpose, the invention provides a preparation method of a coating type stealth coating, which specifically comprises the following steps:
a preparation method of a coating type stealth coating comprises the following steps:
s1, weighing the binder and the diluent in corresponding proportion;
s2, fully stirring and uniformly mixing by using a high-speed stirrer to obtain a diluted coating A for later use;
s3, weighing wave absorbers in corresponding proportion, and adding the wave absorbers into the coating A;
s4, fully stirring and uniformly mixing by using a high-speed stirrer to obtain a coating B;
s5, selecting an aluminum plate, and grinding for later use;
s6, uniformly spraying the coating B on a spare aluminum plate by using air pump jet equipment;
and S7, curing.
The step S1 is to obtain a binder with strong fluidity and uniformity, and the step S3 is to obtain a uniform wave-absorbing coating. Since the wave absorber is a powder, the binder is too viscous to cause uneven mixing, and the binder, the diluent, and the wave absorber are simultaneously stirred to cause uneven mixing.
The binder is at least one of emulsion paint, waterproof coating surface, polyurethane and epoxy resin; the wave absorbing agent is a wave absorbing material compounded by ferrite, nano metal powder, nano ceramic powder, nickel nitrate and the like; the diluent is at least one of water, epoxy resin diluent and special diluent for polyurethane; wherein, the wave absorbing agent is a prerequisite condition for good and bad wave absorbing performance of the coating, and the adhesive and the diluent are decisive factors for ensuring the uniform dispersion and the mechanical performance of the wave absorbing agent.
20-80 parts of binder, 10-80 parts of wave absorbing agent and 10-40 parts of diluent in corresponding proportions; preferably, the adhesive is 30-60 parts by weight, the wave absorbing agent is 20-60 parts by weight, and the diluent is 15-30 parts by weight.
The high-speed stirrer has the rotating speed of 800-1000 rpm, preferably 900-1000 rpm, and further 1000 rpm; wherein the stirring time in the step S2 is 2min-5min, and the stirring time in the step S4 is 20min-40 min; wherein the stirring time in the step S2 is 5min, and the stirring time in the step S4 is 30 min.
The spraying process of the invention preferably adopts an air pump paint spraying machine to spray, and the air pressure of the spraying is 60kg/cm2-90kg/ cm2The thickness of single spraying is controlled to be 0.05mm-0.1 mm. Control of the individual thickness of the coating is particularly important, as a single spray application of a small thickness can cause the coating to bulge and eventually crack the bulged section.
The curing of the invention can be carried out at normal temperature, and the corresponding curing time is 0.5h-5h when the room temperature is 0-40 ℃; heating and curing can be adopted, the heating temperature is 100-300 ℃, and the corresponding curing time is 10-30 min. The higher the curing temperature is, the shorter the curing time is, and the curing temperature can be controlled according to actual needs.
The coating is sprayed for multiple times, S6 and S7 are repeated during spraying, spraying can be performed after the previous layer is completely cured, and the total thickness of the final coating is 0.8-2.4 mm; further, the total thickness of the coating is 1.2mm-1.8 mm; in the area of the aluminum plate, under the influence of the surface density, if the thickness of the coating is uneven, the error of the wave absorbing performance is larger, so that the error of the total thickness of the coating is not more than 0.05mm-0.15 mm.
The aluminum plate can completely vertically reflect electromagnetic waves, and the length, the width and the height of the aluminum plate are respectively 300, 300 and 3 or 180, 180 and 3; in grinding the aluminum plate, 280-600 mesh sandpaper is preferably used. The purpose of polishing the aluminum plate is to roughen the surface of the aluminum plate so as to ensure that the coating can be well adhered to the aluminum plate.
The wave absorbing effect of the coating type stealth coating changes along with the difference of the coating thickness.
Compared with the prior art, the invention has the beneficial effects that:
1. the preparation method of the coating type stealth coating has simple preparation process and construction process;
2. the preparation method of the coating type stealth coating, disclosed by the invention, has the advantages of normal-temperature curing, short curing period, energy conservation, emission reduction and good environmental friendliness;
3. the preparation method of the coating type stealth coating has wide application range, and can be applied to house buildings, weaponry or civil industrial equipment.
4. The preparation method of the coating type stealth coating has uniform surface density distribution and good wave-absorbing effect.
Drawings
FIG. 1 shows the wave absorbing properties of the coated coating sample of example 1;
FIG. 2 shows the wave absorbing properties of the coated coating sample of example 2;
figure 3 shows the wave absorbing properties of the coated coating sample of example 3.
Detailed Description
The present invention will be described in detail with reference to examples. It should be noted that the embodiments and features of the embodiments may be combined with each other without conflict.
The present invention is further illustrated in detail by the following examples, which are provided only for illustrating the present invention and are not intended to limit the scope of the present invention.
Example 1:
s1, weighing 40 parts of latex paint as a binder and 15 parts of water as a diluent, and fully stirring for 2min at the speed of 1000 rpm by using a high-speed stirrer to obtain diluted latex paint for later use;
s2, weighing 20 parts of wave absorbing agent, adding the wave absorbing agent into the emulsion paint for later use in the first step, and fully stirring the mixture for 30min at the speed of 1000 revolutions per minute by using a high-speed stirrer to obtain stealth paint for later use;
s3, taking an aluminum plate with the length, width and height of 300mm, 300mm and 3mm respectively, and polishing the aluminum plate by using 600-mesh abrasive paper for later use;
s4, spraying the prepared stealth paint on a spare aluminum plate by using an air pump paint spraying machine, wherein the air pressure of an air pump is 90kg/cm2The thickness of the sprayed single layer is controlled to be 0.1mm plus or minus 0.05mm, the spraying uniformity is ensured, and the thickness error in the area of the aluminum plate is not more than plus or minus 0.1 mm;
s5, heating and curing the aluminum plate prepared in the fourth step in an oven at 200 ℃, taking out after 20min, and finishing curing;
s6, repeating S4 and S5 until the overall thickness of the coating reaches 1.5mm +/-0.1 mm.
Example 2:
s1, weighing 40 parts of latex paint as a binder and 20 parts of water as a diluent, and fully stirring for 2min at the speed of 1000 revolutions per minute by using a high-speed stirrer to obtain diluted latex paint for later use;
s2, weighing 30 parts of wave absorbing agent, adding the wave absorbing agent into the emulsion paint for later use in the first step, and fully stirring the mixture for 40min at the speed of 1000 revolutions per minute by using a high-speed stirrer to obtain stealth paint for later use;
s3, taking an aluminum plate with the length, width and height of 300mm, 300mm and 3mm respectively, and polishing the aluminum plate by using 600-mesh abrasive paper for later use;
s4, spraying the prepared stealth paint to the inner wall of the container by using an air pump paint spraying machineOn the spare aluminum plate, the air pressure of the air pump is 90kg/cm2The thickness of the sprayed single layer is controlled to be 0.1mm plus or minus 0.05mm, the spraying uniformity is ensured, and the thickness error in the area of the aluminum plate is not more than plus or minus 0.1 mm;
s5, heating and curing the aluminum plate prepared in the fourth step in an oven at 200 ℃, taking out after 20min, and finishing curing;
s6, repeating S4 and S5 until the overall thickness of the coating reaches 1.5mm +/-0.1 mm.
Example 3:
s1, weighing 40 parts of latex paint as a binder and 20 parts of water as a diluent, and fully stirring for 2min at the speed of 1000 revolutions per minute by using a high-speed stirrer to obtain diluted latex paint for later use;
s2, weighing 30 parts of wave absorbing agent, adding the wave absorbing agent into the emulsion paint for later use in the first step, and fully stirring the mixture for 30min at the speed of 1000 revolutions per minute by using a high-speed stirrer to obtain stealth paint for later use;
s3, taking an aluminum plate with the length, width and height of 300mm, 300mm and 3mm respectively, and polishing the aluminum plate by using 600-mesh abrasive paper for later use;
s4, spraying the prepared stealth paint on a spare aluminum plate by using an air pump paint spraying machine, wherein the air pressure of an air pump is 90kg/cm2The thickness of the sprayed single layer is controlled to be 0.1mm plus or minus 0.05mm, the spraying uniformity is ensured, and the thickness error in the area of the aluminum plate is not more than plus or minus 0.1 mm;
s5, heating and curing the aluminum plate prepared in the fourth step in an oven at 200 ℃, taking out after 20min, and finishing curing;
s6, repeating S4 and S5 until the overall thickness of the coating reaches 1.7mm +/-0.1 mm.
Fig. 1, 2 and 3 respectively show the wave-absorbing properties of samples in example 1, example 2 and example 3 of the present invention.
For clarity, the key data are shown in table 1, where the 3 examples are inconsistent.
Table 1: critical data of the embodiment
Analysis of 3 examples shows that the wave-absorbing performance of example 1 is poor, and the wave-absorbing performance of examples 2 and 3 is good, but the final thickness of example 3 is thicker than that of example 2, so that example 2 is the optimal solution.
It will be apparent to those skilled in the art that various modifications and variations can be made in the specific embodiments of the present disclosure without departing from the scope or spirit of the disclosure. Other embodiments will be apparent to those skilled in the art from consideration of the specification. The specification and examples are exemplary only.
Claims (8)
1. A preparation method of a coating type stealth coating comprises the following steps:
s1, weighing the binder and the diluent in corresponding proportion;
s2, fully stirring and uniformly mixing by using a high-speed stirrer to obtain a diluted coating A for later use;
s3, weighing wave absorbers in corresponding proportion, and adding the wave absorbers into the coating A;
s4, fully stirring and uniformly mixing by using a high-speed stirrer to obtain a coating B;
s5, selecting an aluminum plate, and grinding for later use;
s6, uniformly spraying the coating B on a spare aluminum plate by using air pump jet equipment;
and S7, curing.
2. The method of preparing a coating-type camouflage coating according to claim 1, wherein the binder, the wave absorber and the diluent are used in respective proportions of 20 to 80 parts by weight, 10 to 80 parts by weight and 10 to 40 parts by weight.
3. The method of claim 1, wherein the binder is at least one of latex paint, waterproof paint, polyurethane, epoxy resin; the wave absorbing agent is a wave absorbing material compounded by ferrite, nano metal powder, nano ceramic powder, nickel nitrate and the like; the diluent is at least one of water, epoxy resin diluent and special diluent for polyurethane.
4. The method of claim 1, wherein the high speed mixer of S2 and S4 rotates at 800 rpm-1000 rpm, the mixing time of S2 is 2min-5min, and the mixing time of S4 is 20min-40 min.
5. The method of preparing a coating-type stealth coating according to claim 1, wherein the spraying process of S6 is carried out by using an air pump spray coater at an air pressure of 60kg/cm2-90kg/ cm2The thickness of single spraying is controlled to be 0.05mm-0.1 mm.
6. The method of claim 1, wherein the curing step S7 is performed at room temperature, wherein the curing time is 0.5h to 5h at room temperature of 0 ℃ to 40 ℃; heating and curing can also be adopted, the heating temperature is 100-300 ℃, and the corresponding curing time is 10-30 min.
7. The method of preparing a coating-type stealth coating according to claim 1, wherein when the total thickness of the coating is thick, the spraying is required, and S6 and S7 are repeated, and when the spraying is required, the spraying is possible after the previous layer is completely cured, and the total thickness of the coating is 0.8mm to 2.4 mm; the error of the total thickness of the coating is not more than 0.05mm-0.15mm within the area of the aluminum plate.
8. The method of preparing a coating-type stealth coating according to claim 1, wherein the length, width and height of the aluminum sheet in S5 are 300, 3 or 180, 3; when the aluminum plate needs to be polished, 280-600 meshes of sand paper is preferably used.
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| CN201910831730.9A CN110711688A (en) | 2019-09-04 | 2019-09-04 | Preparation method of coating type stealth coating |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114213880A (en) * | 2021-12-23 | 2022-03-22 | 国网辽宁省电力有限公司电力科学研究院 | Preparation method of SiC-based wave-absorbing coating |
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| CN101259463A (en) * | 2008-04-30 | 2008-09-10 | 东北大学 | Preparation of foam aluminum alloy base wave-absorbing material |
| CN106507797B (en) * | 2009-06-24 | 2013-10-16 | 中国海洋大学 | A kind of radar invisible coating and preparation method thereof |
| WO2016141227A1 (en) * | 2015-03-03 | 2016-09-09 | Clear Technology Holdings, Llc | Waterborne light radiation absorbing polyurethane mixed polyester polymer coating system |
| CN107760149A (en) * | 2016-08-23 | 2018-03-06 | 洛阳尖端技术研究院 | A kind of antiradar coatings and preparation method thereof |
| CN108314954A (en) * | 2018-03-19 | 2018-07-24 | 田东昊润新材料科技有限公司 | A kind of low-temperature setting wave-absorbing and camouflage coating and preparation method thereof |
-
2019
- 2019-09-04 CN CN201910831730.9A patent/CN110711688A/en active Pending
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101259463A (en) * | 2008-04-30 | 2008-09-10 | 东北大学 | Preparation of foam aluminum alloy base wave-absorbing material |
| CN106507797B (en) * | 2009-06-24 | 2013-10-16 | 中国海洋大学 | A kind of radar invisible coating and preparation method thereof |
| WO2016141227A1 (en) * | 2015-03-03 | 2016-09-09 | Clear Technology Holdings, Llc | Waterborne light radiation absorbing polyurethane mixed polyester polymer coating system |
| CN107760149A (en) * | 2016-08-23 | 2018-03-06 | 洛阳尖端技术研究院 | A kind of antiradar coatings and preparation method thereof |
| CN108314954A (en) * | 2018-03-19 | 2018-07-24 | 田东昊润新材料科技有限公司 | A kind of low-temperature setting wave-absorbing and camouflage coating and preparation method thereof |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114213880A (en) * | 2021-12-23 | 2022-03-22 | 国网辽宁省电力有限公司电力科学研究院 | Preparation method of SiC-based wave-absorbing coating |
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Application publication date: 20200121 |