CN115971018B - Radar wave-absorbing coating structure and preparation method thereof - Google Patents
Radar wave-absorbing coating structure and preparation method thereof Download PDFInfo
- Publication number
- CN115971018B CN115971018B CN202310021089.9A CN202310021089A CN115971018B CN 115971018 B CN115971018 B CN 115971018B CN 202310021089 A CN202310021089 A CN 202310021089A CN 115971018 B CN115971018 B CN 115971018B
- Authority
- CN
- China
- Prior art keywords
- absorbing coating
- wave
- coating
- absorbing
- thickness
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Active
Links
Classifications
-
- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02A—TECHNOLOGIES FOR ADAPTATION TO CLIMATE CHANGE
- Y02A90/00—Technologies having an indirect contribution to adaptation to climate change
- Y02A90/10—Information and communication technologies [ICT] supporting adaptation to climate change, e.g. for weather forecasting or climate simulation
Abstract
The invention belongs to the technical field of surface treatment, and particularly relates to a radar wave-absorbing coating structure and a preparation method thereof, wherein the radar wave-absorbing coating structure comprises the following steps: processing a matrix and a grid according to the structure size and the coating thickness of a target unit of a structure to be prepared, and enabling the surface curvatures of the grid and the matrix to be consistent; according to the thickness of the coating, a bottom wave-absorbing coating and a surface wave-absorbing coating are sequentially sprayed on the surface of the substrate; after the surface layer wave-absorbing coating is partially cured, pressing the grille into the surface layer wave-absorbing coating until the lower surface of the grille contacts with the bottom layer wave-absorbing coating; and polishing the uneven area after the surface wave-absorbing coating is completely solidified. The invention improves the radar wave absorbing performance of the coating on the premise of not improving the thickness and the area density of the coating. The preparation method is suitable for large-area and curved surface processing, and can keep the surface smooth while forming the structure. The preparation method is simplified while realizing large-area preparation.
Description
Technical Field
The invention belongs to the technical field of surface treatment, and particularly relates to a radar wave-absorbing coating structure and a preparation method thereof.
Background
Aircraft surfaces are typically covered with a radar absorbing coating of a certain thickness. Currently, a radar wave absorbing coating generally contains ferrocarbonyl iron or ferrite and other ferromagnetic radar wave absorbing agents, so that incident radar waves are converted into heat through magnetic loss in the coating, thereby reducing the reflection of the radar waves and reducing the radar sectional area of weapon equipment. As emerging wave-absorbing agents have evolved slowly, some studies have begun focusing on improving the wave-absorbing properties of radar absorbing coatings using surface structures.
Early researches on the mechanism of surface structuring were studied by the middle section jade-plane et al (design preparation of a discontinuous body wave-absorbing flat plate and wave-absorbing mechanism analysis), and discontinuous particles are arranged on the surface, so that the expansion of wave-absorbing bandwidth is realized. Li Wei et al achieved-10 db absorption at 4-40GHz using a 3.7mm thick wave-absorbing coating by micro engraving machine machining on the wave-absorbing coating surface.
Huang Lingxi et al processed a metal mold containing a structure, which was pressed against the surface of the coating when the wave-absorbing coating was not fully cured, and formed a surface structure after the coating was fully cured. Researches show that the hexagonal structure with the side length of about 3.2mm can improve the wave-absorbing bandwidth of-10 db from 0 to 8-18GHz under the condition of not increasing the thickness of the coating.
In view of the existing literature and patent, a great deal of researches at present show that the wave-absorbing performance can be effectively improved by carrying out structural design on the wave-absorbing coating, however, the researches mainly aim at the research on the structural design method and the wave-absorbing performance improving mechanism, and the researches on several processing modes of the surface of the structural wave-absorbing coating are still more traditional and have the following defects:
1) The micro-structure can be accurately prepared on the surface of the wave-absorbing coating by a micro engraving machine, a micro machine tool or ultra-fast laser processing and the like, but the preparation efficiency is low, and the structure is required to be molded one by one, so that the large-area molding is difficult. Current surface microstructure sizes are typically several millimeters, and thus preparation of large area surface structures is difficult.
2) The template imprinting method can mold a plurality of structures at one time and the mold can be reused, but the mold has limited size and complex processing, and is difficult to mold a large-area surface. In the coating curing process, the template needs to keep pressure until the fluidity of the coating is small, and the volatilization of the organic solvent in the coating is slowed down because the template is covered on the coating, so that the curing time is longer, and compared with the processing modes such as a laser or a position carving machine, the efficiency is not improved. Because the used die is metal, the flexibility is relatively poor, and therefore, the processing difficulty of the curved surface is higher. Multiple templates may even be required for complex surfaces to achieve full coverage.
3) After the current wave-absorbing coating is structured, the surface is uneven due to the existence of the structure, and the uneven surface cannot be suitable for equipment surfaces with the requirement of drag reduction, such as aircrafts and the like. Excessive surface roughness increases the frictional resistance of the surface at both low and high speeds. Therefore, extra steps are needed to fill the wave-transparent resin in the grooves of the structure and to level the surface, and the method needs very good fluidity of the resin to fill the grooves with large depth-to-width ratio.
It can be seen from the existing patents and documents that the current technology for processing the surface structure of the wave-absorbing coating is difficult to realize large-area structure molding, the difficulty in processing the curved surface is higher, and the equipment such as an aircraft which has the requirement on the surface smoothness is more required to be filled with wave-absorbing resin after the surface structure is prepared, so that the working procedure is complex.
Disclosure of Invention
First, the technical problem to be solved
The invention mainly aims at the problems and provides a radar wave-absorbing coating structure and a preparation method thereof, which aim to solve the problem of how to improve the wave-absorbing performance of a coating radar on the premise of not improving the thickness and the surface density of the coating and the problem of how to keep the surface flat when large-area and curved surface processing is carried out.
(II) technical scheme
In order to achieve the above purpose, the invention provides a preparation method of a structured radar wave-absorbing coating, which comprises the following steps:
processing a matrix and a grid according to the structure size and the coating thickness of a target unit of a structure to be prepared, and enabling the surface curvatures of the grid and the matrix to be consistent;
according to the thickness of the coating, a bottom wave-absorbing coating and a surface wave-absorbing coating are sequentially sprayed on the surface of the substrate;
after the surface layer wave-absorbing coating is partially cured, pressing the grille into the surface layer wave-absorbing coating until the lower surface of the grille contacts with the bottom layer wave-absorbing coating;
and polishing the uneven area after the surface wave-absorbing coating is completely solidified.
Further, the grid is made of polyethylene drawn net, and the grid size is prepared by adjusting the outlet shape of an extrusion die and the weaving process.
Further, the grid is a flexible grid, and when the self flexibility of the grid cannot be attached to the surface of the substrate, the step of processing the grid with the curvature consistent with the surface of the substrate comprises the following steps: spreading the grille on the curved surface, heating the grille to softening temperature locally by using heating equipment, attaching the grille to the surface shape of the matrix, and finishing local shaping after the grille is cooled.
Further, after the surface wave-absorbing coating is completely cured, polishing the uneven area comprises the following steps: superfluous coating or protruding gratings are ground off for surface irregularities using a pneumatic grinder.
Further, the method for preparing the bottom wave-absorbing coating paint further comprises the steps of: and fully mixing the epoxy resin A material and carbonyl iron powder in a mass ratio of 1:3, adding 0.5 part of the epoxy resin B material after fully mixing in a stirrer, and continuously stirring to obtain the bottom wave-absorbing coating.
Further, the method for preparing the surface wave-absorbing coating paint further comprises the steps of: and fully mixing the epoxy resin A material and carbonyl iron powder in a mass ratio of 1:3, adding 0.5 part of the epoxy resin B material after fully mixing in a stirrer, and continuously stirring to obtain the surface wave-absorbing coating.
Further, according to the thickness of the coating, the step of spraying the bottom wave-absorbing coating on the surface of the substrate comprises the following steps: spraying the fully stirred bottom wave-absorbing coating on the surface of the substrate by using a compressed air spray gun; and (3) the compressed air spray gun is 30cm away from the surface of the substrate, curing is carried out for 5 minutes after spraying for two times, a wet film thickness measuring tool is used for detecting the thickness of the coating, and spraying is stopped when the thickness of the coating reaches the target thickness.
Further, according to the thickness of the coating, the step of spraying the surface layer wave-absorbing coating on the surface of the bottom layer wave-absorbing coating comprises the following steps: spraying the surface layer wave-absorbing coating paint which is fully stirred on the surface of the bottom layer wave-absorbing coating by using a compressed air spray gun; and (3) spraying the coating by using a compressed air spray gun 30cm away from the surface of the bottom wave-absorbing coating, detecting the thickness of the coating by using a wet film thickness measuring tool, and stopping spraying when the thickness of the coating reaches the target thickness.
The invention provides a radar wave-absorbing coating structure which is characterized by comprising a substrate, a bottom wave-absorbing coating and a surface wave-absorbing coating, wherein the bottom wave-absorbing coating and the surface wave-absorbing coating are sequentially sprayed on the substrate, a plurality of target unit structures are arranged on the surface wave-absorbing coating, grooves consistent with the shape and the size of the grids are reserved among the target unit structures, and the grids fill the grooves.
(III) beneficial effects
The technical scheme of the invention has the following advantages: the grid is utilized to replace the dielectric constant of the air-conditioning structured surface, meanwhile, the rigidity of the high polymer grid and the fluidity of the wave-absorbing coating before solidification are utilized, the shape of the grid is printed on the surface of the coating to form a structure, the dielectric constant of the surface wave-absorbing coating is regulated and controlled by dividing the surface wave-absorbing coating into independent structures, electromagnetic wave reflection is reduced, electromagnetic wave scattering is increased, and the wave-absorbing performance of the coating radar is improved; after the polymer grid is buried on the surface of the coating, the surface is flattened by polishing.
Drawings
Fig. 1 is a schematic perspective view of a structure to be prepared according to the present invention.
Fig. 2 is a schematic view of a partial perspective view of a grille according to the present invention.
FIG. 3 is a schematic perspective view of a grid consistent with the curvature of a substrate in accordance with the present invention.
FIG. 4 is a schematic perspective view of a spray coating of the present invention on a substrate surface.
Fig. 5 is a schematic perspective view of a planar substrate according to the present invention.
Fig. 6 is a schematic perspective view of a substrate with a small curvature surface according to the present invention.
Fig. 7 is a schematic perspective view of a substrate with a large curvature surface according to the present invention.
FIG. 8 is a schematic view of a radar absorbing coating made according to the present disclosure.
In the figure: 1. a target cell structure; 2. a base; 3. a grille; 4. a bottom wave-absorbing coating; 5. a surface wave-absorbing coating; 201. a groove.
Detailed Description
The following describes in further detail the embodiments of the present invention with reference to the drawings and examples. The following examples are illustrative of the invention and are not intended to limit the scope of the invention.
In the description of the present invention, it should be understood that the terms "center", "longitudinal", "lateral", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", etc. indicate orientations or positional relationships based on the orientations or positional relationships shown in the drawings, are merely for convenience in describing the present invention and simplifying the description, and do not indicate or imply that the devices or elements referred to must have a specific orientation, be configured and operated in a specific orientation, and thus should not be construed as limiting the present invention. Furthermore, the terms "first," "second," and the like, are used for descriptive purposes only and are not to be construed as indicating or implying relative importance.
In the description of the present invention, it should be noted that, unless explicitly specified and limited otherwise, the terms "mounted," "connected," and "connected" are to be construed broadly, and may be either fixedly connected, detachably connected, or integrally connected, for example; can be mechanically or electrically connected; can be directly connected or indirectly connected through an intermediate medium, and can be communication between two elements. The specific meaning of the above terms in the present invention will be understood in specific cases by those of ordinary skill in the art.
In one aspect of the invention, a method of preparing a structured radar absorbing coating is provided. The radar wave-absorbing coating structure prepared by the method for preparing the radar wave-absorbing coating structure has excellent radar wave-absorbing performance and processing characteristics of large-area preparation.
In the method, the formed radar wave-absorbing coating structure can be regulated and controlled by regulating and controlling the unit size and the coating thickness of the prepared structure.
The embodiment of the application provides a preparation method of a structured radar wave-absorbing coating, which comprises the following steps:
and S1, processing a matrix and a grid according to the size and the coating thickness of a target unit structure of a structure to be prepared, and enabling the surface curvatures of the grid and the matrix to be consistent.
In the step S1, firstly, determining the size and the coating thickness of a target unit structure 1 for preparing a structure, setting the coating thickness as h, enabling a structural unit to be square with a side length of L, depth d and unit interval as w, wherein the specific structure is shown in figure 1; depending on the absorber and the application scenario, one preferred example of the several common ranges of structural dimensions is: 0.5mm < h < 2mm,1mm < L < 5mm,0.2mm < h < 2mm,0.1mm < w < 1mm. As shown in fig. 1 and 2, the substrate 2 and the grating 3 are processed according to the determined size and coating thickness, wherein the curvature of the processed grating 3 is consistent with the surface curvature of the substrate 2, and the processed grating 3 has a line width w, a depth d and a mesh side length L; it will be appreciated that the surface curvature is consistent including a plane surface of the base 2, a small curvature surface and a large curvature surface, when the surface of the base 2 is a plane surface, the grating 3 is parallel to the surface of the base 2, and when the surface of the base 2 is a curved surface, the grating 3 is a curved surface having a curvature consistent with that of the base 2, so that the grating 3 can be attached to the surface shape of the base 2 in a subsequent process, and it should be noted that the surface of the base 2 is a curved surface including a small curvature as shown in fig. 6 and a large curvature as shown in fig. 7.
And S2, spraying a bottom wave-absorbing coating 4 and a surface wave-absorbing coating 5 on the surface of the substrate in sequence according to the thickness of the coating.
In this step S2, the bottom layer wave-absorbing coating 4 with thickness h-d is sprayed on the surface of the substrate, and cured in air, and because the depth of the structure is d, the region of the bottom layer wave-absorbing coating 4 with thickness h-d has no structure, and the bottom layer wave-absorbing coating 4 is sprayed first to provide support for the preparation process of the upper layer structure after curing. After the bottom layer wave-absorbing coating 4 is solidified, a surface layer wave-absorbing coating 5 with the thickness d is sprayed on the surface of the bottom layer wave-absorbing coating 4, as shown in fig. 4.
And S3, pressing the grille into the surface layer wave-absorbing coating until the lower surface of the grille contacts with the bottom layer wave-absorbing coating after the surface layer wave-absorbing coating is partially solidified.
5-7, after the coating is partially cured, the grating 3 is pressed into the surface wave-absorbing coating 5, the surface wave-absorbing coating is divided into independent structures by the grating 3, and the dielectric constant of the surface wave-absorbing coating 5 is regulated, so that the dielectric constant of an interface is more prone to air, and the reflection of radar waves is reduced. At the same time, the structure increases the edge which can lead to radar wave scattering, and reduces the vertical reflection of the radar wave.
And S4, polishing the uneven area after the surface wave-absorbing coating is completely solidified.
As shown in fig. 8, the excess coating or protruding grid 3 is ground off by using a pneumatic grinder for surface irregularities. The surface of the whole body can be relatively flat, and the surface leveling device can be suitable for equipment such as aircraft surfaces and the like which have requirements on surface flatness.
In this embodiment, the material of the grid 3 is a polyethylene drawn net, and the grid size is adjusted by the shape of the outlet of the extrusion die and the knitting process.
In this embodiment, the grating is a polymer flexible grating 3, and when the self flexibility of the grating 3 cannot be attached to the surface of the substrate, the step of processing the grating 3 with the curvature consistent with the surface of the substrate includes: the grid 3 is shaped.
In at least one example of shaping the grid 3, the grid 3 can be bonded to the surface by using the flexibility of the polymer itself on the surface with a small curved surface, but for the hyperboloid or the surface with a large curvature, the flexibility of the polymer itself is insufficient, so that it is difficult to achieve a good bonding, and therefore, the grid 3 needs to be locally heated and softened, and is used after shaping. Specifically, the grating 3 is paved on the curved surface, heating equipment such as a hot air gun is used for locally heating the grating 3 to a temperature slightly lower than the softening temperature, the grating 3 is attached to the surface shape, and local shaping is completed after the grating 3 is cooled, as shown in fig. 3.
In the method of preparing the radar absorbing coating structure of the above embodiment, the manner of preparing the spraying agent of the bottom layer absorbing coating 4 and the top layer absorbing coating 5 is not particularly limited.
The coating material such as the underlying wave-absorbing coating 4 described above may be formulated by a method that may include: and fully mixing the epoxy resin A material and carbonyl iron powder in a mass ratio of 1:3, adding 0.5 part of the epoxy resin B material after mixing for 1.5 hours at a rotating speed of 700rpm in a stirrer, and continuously stirring for 30 minutes to obtain the bottom layer wave-absorbing coating.
The coating of the surface wave-absorbing coating 5 can be prepared in a mode similar to that of the bottom wave-absorbing coating 4, and the description of this embodiment is not repeated here.
In yet another aspect of the present invention, a radar absorbing coating structure is provided, which is manufactured by the above manufacturing method, and includes a substrate 2, and a bottom absorbing coating 4 and a surface absorbing coating 5 sequentially sprayed on the substrate 2, where the surface absorbing coating 5 has a plurality of target unit structures 1, a groove 201 with a shape and a size consistent with those of the grating 3 is left between two adjacent target unit structures 1, and the grating 3 fills the groove 201.
The following examples illustrate the invention in more detail in order to further disclose the nature of the invention. All proportions cited are in parts by weight. It is to be understood that the invention is not to be limited to the specific conditions or details set forth in the examples except insofar as such conditions are specified in the appended claims.
Example 1
The structural wave-absorbing coating is prepared on the surface of the large-curvature titanium alloy aircraft panel, and the structural size parameters of the unit are designed through simulation and test in the early stage: h=1.5 mm, d=0.8 mm, l=1.8 mm, w=0.3 mm.
Step S1-1: the outer surface of the wallboard (i.e., substrate 2 described above) was polished using 400 mesh coarse sand paper to increase the surface roughness.
Step S2-1: spreading the polymer grille on the surface of the wallboard, heating the grille locally to 80-90 degrees by using a hot air gun for a large curvature area, lightly pressing the grille on the surface of the wallboard, monitoring the temperature by using an infrared thermometer during the period, and finishing shaping after the grille is cooled.
Step S3-1: the epoxy resin A material and carbonyl iron powder with the mass ratio of 1:3 are fully mixed, and after being mixed for 1.5 hours in a stirrer at the speed of 700rpm, 0.5 part of epoxy resin B material is added, and stirring is continued for 30 minutes.
Step S4-1: the well-stirred primer wave-absorbing coating paint was sprayed onto the wallboard using a compressed air spray gun. The lance was spaced about 30cm from the sample and the process sample was placed on the side of the sample for thickness control. After each spray-coating time, curing for 5 minutes, coating thickness detection is carried out on the process sample by using a wet film thickness measuring tool, and when the wet film thickness is 0.7mm, spraying is stopped.
Step S5-1: after 2 days of standing in a room temperature ventilation environment, the bottom layer wave absorber is cured.
Step S6-1: the wave-absorbing paint is prepared and the wave-absorbing agent on the surface layer is sprayed by the same method in the step S3-1 and the step S4-1, the thickness of the process sample is detected by using a wet film thickness measuring tool, and the spraying is stopped when the thickness is 0.8 mm.
Step S7-1: after 4 hours of standing in a room temperature ventilation environment, the surface layer wave absorber was partially cured.
Step S8-1: gradually pressing into the surface coating until the lower surface of the grille contacts with the bottom coating to form a support.
Step S9-1: after 2 days of standing in a room temperature ventilation environment, the surface wave absorber is cured.
Step S10-1: superfluous coating or protruding gratings are ground off for surface irregularities using a pneumatic grinder.
According to the embodiment, the method is applicable to large-area preparation of the structured wave-absorbing coating, and compared with the existing similar invention or technology, the preparation method is high in preparation efficiency, relatively simple and applicable to large-area processing; by the preparation method, the flexibility of the polymer grille is utilized, so that the method can be used for processing the microstructure of the large-area curved surface without using a die additionally; and because the structure gap is filled by the polymer grid after the structure is formed, the whole surface is relatively flat, and the structure gap can be suitable for equipment with the requirement on surface flatness, such as aircraft surfaces.
The foregoing is merely a preferred embodiment of the present invention, and it should be noted that it will be apparent to those skilled in the art that modifications and variations can be made without departing from the technical principles of the present invention, and these modifications and variations should also be regarded as the scope of the invention.
Claims (5)
1. The preparation method of the structured radar wave-absorbing coating is characterized by comprising the following steps of:
according to the target unit structure size and the coating thickness of the structure to be prepared, processing a matrix and a grating, and enabling the curvature of the grating and the surface of the matrix to be consistent, wherein the grating is a flexible grating, and when the self flexibility of the grating cannot be adhered to the surface of the matrix, the step of processing the grating with the curvature of the surface of the matrix to be consistent comprises the following steps: spreading a grating on a curved surface, locally heating the grating to a softening temperature by using heating equipment, attaching the grating to the surface shape of a matrix, and completing local shaping after the grating is cooled;
according to the thickness of the coating, a bottom wave-absorbing coating and a surface wave-absorbing coating are sequentially sprayed on the surface of the substrate, wherein after the bottom wave-absorbing coating is solidified, the surface wave-absorbing coating is sprayed on the surface of the bottom wave-absorbing coating;
after the surface layer wave-absorbing coating is partially cured, pressing the grille into the surface layer wave-absorbing coating until the lower surface of the grille contacts with the bottom layer wave-absorbing coating;
polishing an uneven area after the surface wave-absorbing coating is completely cured, wherein the surface wave-absorbing coating is provided with a plurality of target unit structures, grooves with the same shape and size as the grids are reserved among the target unit structures, and the grids fill the grooves;
the preparation method of the bottom wave-absorbing coating paint further comprises the following steps of: fully mixing an epoxy resin A material and carbonyl iron powder in a mass ratio of 1:3, adding 0.5 part of an epoxy resin B material after fully mixing in a stirrer, and continuously stirring to obtain the bottom wave-absorbing coating;
the preparation method of the surface wave-absorbing coating paint further comprises the steps of: and fully mixing the epoxy resin A material and carbonyl iron powder in a mass ratio of 1:3, adding 0.5 part of the epoxy resin B material after fully mixing in a stirrer, and continuously stirring to obtain the surface wave-absorbing coating.
2. The method for preparing the structured radar absorbing coating according to claim 1, wherein the material of the grating is a polyethylene drawing net, and the size of the grating is prepared by adjusting the outlet shape of an extrusion die and the weaving process.
3. The method of producing a structured radar absorbing coating according to claim 1, wherein the step of polishing the uneven area after the surface absorbing coating is completely cured comprises: superfluous coating or protruding gratings are ground off for surface irregularities using a pneumatic grinder.
4. The method of producing a structured radar absorbing coating according to claim 1, wherein the step of spraying a primer absorbing coating on the surface of the substrate according to the thickness of the coating comprises: spraying the fully stirred bottom wave-absorbing coating on the surface of the substrate by using a compressed air spray gun; and (3) the compressed air spray gun is 30cm away from the surface of the substrate, curing is carried out for 5 minutes after spraying for two times, a wet film thickness measuring tool is used for detecting the thickness of the coating, and spraying is stopped when the thickness of the coating reaches the target thickness.
5. The method for preparing a structured radar absorbing coating according to claim 1, wherein the step of spraying a top absorbing coating on the surface of the bottom absorbing coating according to the thickness of the coating comprises: spraying the surface layer wave-absorbing coating paint which is fully stirred on the surface of the bottom layer wave-absorbing coating by using a compressed air spray gun; and (3) spraying the coating by using a compressed air spray gun 30cm away from the surface of the bottom wave-absorbing coating, detecting the thickness of the coating by using a wet film thickness measuring tool, and stopping spraying when the thickness of the coating reaches the target thickness.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202310021089.9A CN115971018B (en) | 2023-01-07 | 2023-01-07 | Radar wave-absorbing coating structure and preparation method thereof |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202310021089.9A CN115971018B (en) | 2023-01-07 | 2023-01-07 | Radar wave-absorbing coating structure and preparation method thereof |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN115971018A CN115971018A (en) | 2023-04-18 |
| CN115971018B true CN115971018B (en) | 2023-07-28 |
Family
ID=85962365
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202310021089.9A Active CN115971018B (en) | 2023-01-07 | 2023-01-07 | Radar wave-absorbing coating structure and preparation method thereof |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN115971018B (en) |
Citations (10)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102427714A (en) * | 2011-09-27 | 2012-04-25 | 东华大学 | Wave absorbing sheet with carbon fiber endless tows in grid-shaped arrangement and preparation method thereof |
| CN107128050A (en) * | 2017-04-21 | 2017-09-05 | 中国航空工业集团公司基础技术研究院 | A kind of embedded cellular manufacture method and implantation frock of eliminating the noise |
| JP2017220585A (en) * | 2016-06-08 | 2017-12-14 | 中国塗料株式会社 | Radio wave absorber and method of manufacturing radio wave absorber and painting method of radio wave absorber |
| CN108097560A (en) * | 2017-11-13 | 2018-06-01 | 上海无线电设备研究所 | It is a kind of based on three-dimensionally shaped wave-absorber preparation method and corresponding wave-absorber |
| CN108483388A (en) * | 2018-02-05 | 2018-09-04 | 航天特种材料及工艺技术研究所 | Multi-functional thermally protective materials and preparation method thereof |
| CN108582913A (en) * | 2018-04-02 | 2018-09-28 | 浙江洁呈新材料科技有限公司 | Inhale wave non-woven fabrics |
| CN111572109A (en) * | 2020-07-01 | 2020-08-25 | 宁波曙翔新材料股份有限公司 | Stealth material system and preparation method thereof |
| CN211651220U (en) * | 2019-12-30 | 2020-10-09 | 南京联合荣大工程材料有限责任公司 | Anti-crack structure for fire-resistant pouring |
| WO2021040007A1 (en) * | 2019-08-29 | 2021-03-04 | 関西ペイント株式会社 | Millimeter wave-absorbing structure |
| CN114589979A (en) * | 2022-01-22 | 2022-06-07 | 中北大学 | Honeycomb sandwich composite material with high-speed impact resistance and wave-absorbing stealth function and preparation method thereof |
Family Cites Families (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US7511653B2 (en) * | 2007-07-20 | 2009-03-31 | Chang-Sui Yu | Radar wave camouflage structure and method for fabricating the same |
-
2023
- 2023-01-07 CN CN202310021089.9A patent/CN115971018B/en active Active
Patent Citations (10)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102427714A (en) * | 2011-09-27 | 2012-04-25 | 东华大学 | Wave absorbing sheet with carbon fiber endless tows in grid-shaped arrangement and preparation method thereof |
| JP2017220585A (en) * | 2016-06-08 | 2017-12-14 | 中国塗料株式会社 | Radio wave absorber and method of manufacturing radio wave absorber and painting method of radio wave absorber |
| CN107128050A (en) * | 2017-04-21 | 2017-09-05 | 中国航空工业集团公司基础技术研究院 | A kind of embedded cellular manufacture method and implantation frock of eliminating the noise |
| CN108097560A (en) * | 2017-11-13 | 2018-06-01 | 上海无线电设备研究所 | It is a kind of based on three-dimensionally shaped wave-absorber preparation method and corresponding wave-absorber |
| CN108483388A (en) * | 2018-02-05 | 2018-09-04 | 航天特种材料及工艺技术研究所 | Multi-functional thermally protective materials and preparation method thereof |
| CN108582913A (en) * | 2018-04-02 | 2018-09-28 | 浙江洁呈新材料科技有限公司 | Inhale wave non-woven fabrics |
| WO2021040007A1 (en) * | 2019-08-29 | 2021-03-04 | 関西ペイント株式会社 | Millimeter wave-absorbing structure |
| CN211651220U (en) * | 2019-12-30 | 2020-10-09 | 南京联合荣大工程材料有限责任公司 | Anti-crack structure for fire-resistant pouring |
| CN111572109A (en) * | 2020-07-01 | 2020-08-25 | 宁波曙翔新材料股份有限公司 | Stealth material system and preparation method thereof |
| CN114589979A (en) * | 2022-01-22 | 2022-06-07 | 中北大学 | Honeycomb sandwich composite material with high-speed impact resistance and wave-absorbing stealth function and preparation method thereof |
Also Published As
| Publication number | Publication date |
|---|---|
| CN115971018A (en) | 2023-04-18 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN103741139B (en) | A kind of plane metalloid part laser quick cladding device and cladding method thereof | |
| CN102076482A (en) | Device for producing a three-dimensional object in layers | |
| CN115971018B (en) | Radar wave-absorbing coating structure and preparation method thereof | |
| CN104261726B (en) | Special grinding pad of a kind of two-sided fine finishining of optical glass and preparation method thereof | |
| CN107319895B (en) | A kind of blocky magnetic carpet and preparation method thereof | |
| CN204892951U (en) | Direct quick former automatic levelling device of metal | |
| CN111744771A (en) | Reflecting plate production device and preparation method thereof | |
| CN110512754B (en) | Composite insulation board with three-dimensional structure interface and preparation method thereof | |
| CN106125051B (en) | The low scattering holder of one kind and its manufacturing method | |
| CN110405543B (en) | Ferrite substrate polishing method adopting acidic polishing solution and metal-based polishing disk | |
| CN114211785A (en) | Composite material repairing process for aircraft skin hole-breaking type damage | |
| CN112659662A (en) | Wave-absorbing patch/hard substrate adhesive composite structure and preparation method thereof | |
| CN113997213B (en) | Ceramic diamond grinding wheel for thinning SiC wafer and manufacturing method thereof | |
| CN112553617A (en) | Low-stress laser cladding repair method suitable for thin-wall structure | |
| CN108252189A (en) | A kind of asphalt road surface by microwave heating in-situ heat regeneration device and method | |
| CN103710555A (en) | Method for preparing tungsten copper sheets or plates by utilization of tape casting method | |
| CN203611119U (en) | Consolidation material-grinding pad for grinding and polishing of spherical workpiece | |
| CN109788728A (en) | A kind of lightweight inhales wave darkroom pointed cone material and preparation method thereof | |
| CN114142238A (en) | Microwave/infrared electromagnetic compatible metamaterial based on polygonal element structure and preparation method thereof | |
| CN112687253A (en) | Light sound insulation structure based on triple-period extremely-small curved surface and preparation method thereof | |
| CN110465898A (en) | The manufacturing method of piece is thinned in a kind of diamond | |
| CN220900738U (en) | Auxiliary metal spraying tool | |
| CN105195396A (en) | Manual microwave-absorbing coating application forming device and coating preparation method | |
| CN110405649A (en) | A kind of collosol and gel polishing pellet and preparation method thereof of addition with waterproof coating soluble filler | |
| CN208009217U (en) | A kind of asphalt road surface by microwave heating in-situ heat regeneration device |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| PB01 | Publication | ||
| PB01 | Publication | ||
| SE01 | Entry into force of request for substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| GR01 | Patent grant | ||
| GR01 | Patent grant |