CN107892871A - A kind of anticorrosion microwave absorbing coating and preparation method thereof - Google Patents
A kind of anticorrosion microwave absorbing coating and preparation method thereof Download PDFInfo
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- CN107892871A CN107892871A CN201711335526.5A CN201711335526A CN107892871A CN 107892871 A CN107892871 A CN 107892871A CN 201711335526 A CN201711335526 A CN 201711335526A CN 107892871 A CN107892871 A CN 107892871A
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- microwave absorbing
- anticorrosion
- absorbing coating
- layer
- acroleic acid
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Classifications
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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
- C09D175/00—Coating compositions based on polyureas or polyurethanes; Coating compositions based on derivatives of such polymers
- C09D175/04—Polyurethanes
- C09D175/14—Polyurethanes having carbon-to-carbon unsaturated bonds
-
- 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
- C09D5/08—Anti-corrosive paints
-
- 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
Abstract
The invention provides a kind of anticorrosion microwave absorbing coating and preparation method thereof, it is related to rubber-ferrite field of functional coatings.The anticorrosion microwave absorbing coating includes the acroleic acid polyurethane bottom, suction ripple layer and anti-corrosion surface layer being arranged in order, and anti-corrosion surface layer is as obtained by by surface of the unmaned platform coated on suction ripple layer.Its preparation method includes：Acroleic acid polyurethane coating is sprayed in substrate surface, forms acroleic acid polyurethane bottom；Antiradar coatings are sprayed on acroleic acid polyurethane bottom after hardening, is formed and inhales ripple layer；Suction ripple layer surface spraying unmaned platform after hardening again, forms anti-corrosion surface layer.This microwave absorbing coating has the characteristics of strong wave-sucking performance, excellent anti-corrosion performance, can solve the problems, such as existing antiradar coatings decay resistance deficiency, improve the weatherability and service life of microwave absorbing coating.
Description
Technical field
The present invention relates to rubber-ferrite field of functional coatings, in particular to a kind of anticorrosion microwave absorbing coating and its
Preparation method.
Background technology
With the development of avionics and modern material technology, absorbing material technology is military and civilian important
Property is more and more significant.Many work have been done in countries in the world in this respect, and absorbing material technology successfully is applied into aviation, boat
My god, the field such as electromagnetic protection, electromagnetic shielding.Absorbing material technology is by designing and using some certain materials, weakening, suppression
System, absorb, the technology of deflecting object electromagnetic wave.A kind of microwave absorbing coating absorbing material good as convenience, economy, adaptability, most
It is just to need to develop for the radar-wave absorbing of space flight, aviation aircraft, but with the development of science and technology and social economy
Progress, microwave absorbing coating also begins to popularization and application on land equipment, marine settings, civilian equipment, especially high fever, high humidity,
Application under the regional climate environment of high salt fog, there is higher requirement to the decay resistance of microwave absorbing coating.
Existing microwave absorbing coating decay resistance is poor, turns into a great difficult problem for restricting its popularization and application, in consideration of it, this
Invention provides a kind of corrosion-resistant microwave absorbing coating and preparation method thereof.
The content of the invention
The first object of the present invention is to provide a kind of anticorrosion microwave absorbing coating, and the coating has that wave-sucking performance is strong, corrosion resistant
The characteristics of losing excellent performance, can solve the problems, such as existing antiradar coatings decay resistance deficiency, improve the weatherability of microwave absorbing coating
And service life.
The second object of the present invention is to provide a kind of preparation method of above-mentioned anticorrosion microwave absorbing coating, the letter of this method technique
It is single, easily implement, and raw material sources are extensive, and the good compatibility of coating wave absorbtion and corrosion resistance can be achieved.
In order to realize the above-mentioned purpose of the present invention, spy uses following technical scheme：
A kind of anticorrosion microwave absorbing coating, its acroleic acid polyurethane bottom for including being arranged in order, ripple layer and anti-corrosion surface layer are inhaled,
Anti-corrosion surface layer is as obtained by by surface of the unmaned platform coated on suction ripple layer.
A kind of preparation method of anticorrosion microwave absorbing coating, it includes：
Acroleic acid polyurethane coating is sprayed in substrate surface, forms acroleic acid polyurethane bottom, acroleic acid polyurethane bottom
Dry film coating thickness be 20~100 μm；
Antiradar coatings are sprayed on acroleic acid polyurethane bottom after hardening, is formed and inhales ripple layer, inhale the dry film coating of ripple layer
Thickness is 300~2000 μm；
Suction ripple layer surface spraying unmaned platform after hardening again, forms anti-corrosion surface layer, and anti-corrosion surface layer is done
Membrane coat thickness is 50~500 μm.
Compared with prior art, beneficial effects of the present invention for example including：
This anticorrosion microwave absorbing coating provided by the invention and preparation method thereof, there is three layer coating structure, i.e. acrylic acid
Polyurethane basecoat, ripple layer and anti-corrosion surface layer are inhaled, every layer is respectively provided with unique feature, and compatible good between coating, can assist
The combination property of the enhancing coating of tonality.
Wherein, the present invention prepares anti-corrosion surface layer using unmaned platform, this unmaned platform and
Compatible good between suction ripple layer, coated substrate system approaches, phenomena such as being not susceptible to bleeding, lifting, come off, ply adhesion
By force；There is excellent mechanical property and antiseptic property by the anti-corrosion surface layer of the coating preparation, and its dielectric constant is low, is advantageous to electricity
Magnetic wave, which is injected, to be inhaled ripple layer and is absorbed inhaling ripple layer；Meanwhile the matches impedances between the anti-corrosion surface layer and suction ripple layer, so as to keep away
Exempt from the electromagnetic wave between anti-corrosion surface layer and suction ripple layer because the impedance mismatch of the two is reflected, influence absorbing property.
Therefore, this anticorrosion microwave absorbing coating provided by the invention, preparation technology is simple, and raw material sources are extensive, can be achieved
The good compatibility of coating wave absorbtion and corrosion resistance, improve in the prior art microwave absorbing coating corrosion-resistant the defects of, improve inhale
The weatherability and service life of ripple coating.
Embodiment
Embodiment of the present invention is described in detail below in conjunction with embodiment, but those skilled in the art will
Understand, the following example is merely to illustrate the present invention, and is not construed as limiting the scope of the present invention.It is unreceipted specific in embodiment
Condition person, the condition suggested according to normal condition or manufacturer are carried out.Agents useful for same or the unreceipted production firm person of instrument, it is
The conventional products that can be obtained by commercially available purchase.
Present embodiment provides a kind of anticorrosion microwave absorbing coating, its acroleic acid polyurethane bottom for including being arranged in order, inhales
Ripple layer and anti-corrosion surface layer.
Wherein, anti-corrosion surface layer is as obtained by by surface of the unmaned platform coated on suction ripple layer, more preferably
, the coating layer thickness of anti-corrosion surface layer is 50~500 μm, be either 100~400 μm or is 200~300 μm, or is 240
~260 μm.Anti-corrosion surface layer can not be too thick, otherwise can influence the efficiency of transmission of electromagnetic wave, weakens its absorbing property；And anti-corrosion face
If layer is too thin, be difficult to effective corrosion-resistant purpose, can cause the weatherability of the microwave absorbing coating of final gained it is poor, using the longevity
Life shortens.
Although there is many materials to realize corrosion-resistant function in the prior art, most materials therein are with inhaling
The poor compatibility of ripple layer, and the compactness of the coating formed is bad, it is difficult to make material while Corrosion Protection is possessed, also
Excellent absorbing property can be kept.
Why this special material of unmaned platform is selected to prepare anti-corrosion surface layer in the present embodiment, this
It is due to：The anti-corrosion surface layer prepared by the unmaned platform, has the advantage that：Unmaned platform and this suction
Ripple coating system compatibility is good, and property is stable, and Corrosion Protection is excellent, mature technology, and construction is quick and convenient.
In addition, this unmaned platform, due to its solid content ＞ 99.5%, that is, is practically free of solvent, therefore phase
For common antisepsis finishing paint of the prior art, as the solvent in the curing process of the coating obtained by this unmaned platform
The stomata formed that volatilizees is few so that the compactness and closure of coating are strengthened, and then improve the permeability resistance of coating, can
The infiltration of moisture, air, ion etc. is effectively prevented, and there is the characteristics of high-wearing feature, high-flexibility, high chemical stability, from
And cause whole microwave absorbing coating that there is good corrosion resistance and weatherability.
Further, it is as obtained by by surface of the antiradar coatings coated on acroleic acid polyurethane bottom to inhale ripple layer, inhales ripple
The coating layer thickness of layer is 300~2000 μm, be either 500~1700 μm or is 800~1500 μm, or be 1000~
1300μm.The thickness for inhaling ripple layer can be according to the wavelength and intensity of electromagnetic wave in the application scenarios of the microwave absorbing coating in 300~2000 μ
Set in the range of m.
Wherein, the raw material of antiradar coatings includes by mass percentage：Absorbent 9.0%~63.0%, matrix resin
7.0%~73.0%, dispersant 0.5%~2.0%, anti-heavy agent 0.4%~1.0%, diluent 4.0%~26.0%, solidification
Agent 1.0%~12.0%.
Wherein, above-mentioned absorbent includes at least one of ferrite, carbonyl iron dust, iron sial, iron silicochromium and carbon black；On
State the performed polymer type polyurethane that matrix resin reacts to obtain for toluene di-isocyanate(TDI), polyester diol and PEPA；On
State diluent include toluene, dimethylbenzene, butyl acetate, methylisobutylketone, butanone and cyclohexanone in two or more
Mixture；Above-mentioned curing agent is aromatic diamines curing agent, and more preferably, the aromatic diamines curing agent includes：3,
5- dimethythiotoluene diamines, 3,5- diethyl toluene diamines, 2,4- diaminourea -3,5- dimethyl sulphur-baseds chlorobenzene, 3,3 ' two chloro- 4,
The one or several kinds of 4 '-diaminodiphenyl-methane.Above-mentioned anti-heavy agent includes：For example organic swelling of the anti-heavy agent of commercially available common coating
Soil, aerosil, modified hydrogenated castor oil, the N monomethyl pyrrolidones etc. of modified polyurea；Above-mentioned dispersant includes：City
Sell common polymer electrolyte polyurethane coating dispersant.
Further, the preparation method of the antiradar coatings includes：
By mass percentage, matrix resin, dispersant, anti-heavy agent are mixed with diluent, in turning for 1000~1200rmp
After 20~40min of the lower stirring of speed, the absorbent is added, after continuing 20~40min of stirring, addition curing agent, stirring 3~
10min。
The suction ripple layer prepared by the above method, it is poly- using performed polymer type polyurethane resin and amine curing agent reaction generation
Urea, the coating degree of cross linking is high, and mechanical property is good, good with all kinds of radio-radar absorber compatibility, and can meet absorbent high filler loading capacity
Requirement, realize the extensive regulation of different absorbing property requirements.
Further, acroleic acid polyurethane bottom is formed by spraying acroleic acid polyurethane coating in substrate surface,
More preferable, its coating layer thickness is 20~100 μm, is either 30~80 μm or is 40~60 μm, or is 45~65 μ
m.The thickness of acroleic acid polyurethane bottom can be set according to the material and surface appearance of base material in 20~100 μ ms
It is fixed.
Bottom is Acrylic Polyurethane Coating, and its matrix is acrylic resin and additive by adding good weatherability etc.
Polyurethane resin is modified and formed, there is good adhesive force, pliability, acid and alkali-resistance, salt tolerant, oil resistant, water resistance, it is applied
Metallic substrate surface is overlayed on, high with the adhesion of substrate interface, compactness is good, can cover substrate surface defect, greatly improves painting
The barrier propterty and service life of layer.
Present embodiment also provides a kind of preparation method of above-mentioned anticorrosion microwave absorbing coating, and it includes：
Step S1:Acroleic acid polyurethane coating is sprayed in substrate surface, forms the acroleic acid polyurethane bottom, described third
The dry film coating thickness of olefin(e) acid polyurethane basecoat is 20~100 μm；
Preferably, before implementation steps S1, in addition to：The substrate surface constructed to needs carries out polishing abatement processes,
Polished using craft or power tool, surface scouring is then carried out using alcohol, acetone and other organic solvent.
Step S2:Antiradar coatings are sprayed on the acroleic acid polyurethane bottom after hardening, form the suction ripple layer, institute
The dry film coating thickness for stating suction ripple layer is 300~2000 μm.
Step S3:Suction ripple layer surface spraying unmaned platform after hardening again, forms the anti-corrosion surface layer, institute
The dry film coating thickness for stating anti-corrosion surface layer is 50~500 μm.
The feature and performance of the present invention are described in further detail with reference to embodiments：
Embodiment 1
The present embodiment provides a kind of anticorrosion microwave absorbing coating, and its preparation method includes：
Coating preparation is carried out on 180mm × 180mm × 5mm aluminum alloy base material plates：
First, substrate sheet surface is polished with 80 mesh sand paper using Pneumatic grinding machine, to there is coarse frosted texture,
Acetone is dipped with cotton and wipes surface, is removed surface impurity and greasy dirt, is dried.Then acrylic polyurethane primer, thickness are sprayed
55 μm, normal temperature cure 12 hours, form acroleic acid polyurethane bottom；Antiradar coatings, 580 μm of thickness, normal temperature cure 24 are sprayed again
Hour, formed and inhale ripple layer；Unmaned platform is finally sprayed, forms anti-corrosion surface layer, 60 μm of thickness, normal temperature cure 12 hours
Afterwards, anticorrosion microwave absorbing coating is produced.
The preparation method of wherein described antiradar coatings is：
By 100g performed polymers type polyurethane resin, the anti-heavy agent organobentonite of 3.0g dispersants 923S, 1.5g, 50g dilutions
Agent (dimethylbenzene：Cyclohexanone=4:1, mass ratio) it is added in beaker, it is disperseed using mixer, speed of agitator is set
For 1000rpm；After stirring 30min, be gradually slowly added to 252g carbonyl iron dust absorbents, to be absorbed dose add after continue to stir
30min is to well mixed；4.7g curing agent 3 is added, 5- diethyl toluene diamines, after stirring 5min, obtains sprayable suction
Ripple coating.
Embodiment 2
The present embodiment provides a kind of anticorrosion microwave absorbing coating, and its preparation method includes：
Coating preparation is carried out on 300mm × 300mm × 5mm aluminum alloy base material plates：
First, surface is polished with 120 mesh sand paper using Pneumatic grinding machine, to there is coarse frosted texture, uses cotton
Cloth dips alcohol wipe surface, removes surface impurity and greasy dirt, dries.Then acrylic polyurethane primer is sprayed, 70 μm of thickness,
Normal temperature cure 12 hours, form acroleic acid polyurethane bottom；Spray antiradar coatings again, 1050 μm of thickness, normal temperature cure 24 hours,
Formed and inhale ripple layer；Finally spray unmaned platform, form anti-corrosion surface layer, 110 μm of thickness, normal temperature cure 12 hours, i.e.,
Obtain anticorrosion microwave absorbing coating.
The preparation method of wherein described antiradar coatings is：
By 503g performed polymers type polyurethane resin, 9.8g dispersants 495, anti-heavy agent BYK-410,220g diluents of 6.0g
(toluene：Butyl acetate：Butanone=4:2:1, mass ratio) it is added in beaker, it is disperseed using mixer, stirring turns
Speed is arranged to 1100rpm；After stirring 40min, be gradually slowly added to 422g Ferrite Absorbers, to be absorbed dose add after continue to stir
20min is mixed to well mixed；22g curing agent 2 is added, 4- diaminourea -3,5- dimethyl sulphur-based chlorobenzenes, after stirring 3min, is obtained
Sprayable antiradar coatings.
Embodiment 3
The present embodiment provides a kind of anticorrosion microwave absorbing coating, and its preparation method includes：
Coating preparation is carried out on 180mm × 180mm × 3mm iron backing material plates：
First, surface is polished with 80 mesh sand paper using hand sand method, to there is bright ferrous metal color and luster, uses cotton
Cloth dips acetone and wipes surface, removes surface impurity and greasy dirt, dries.Then acrylic polyurethane primer is sprayed, 90 μm of thickness,
Normal temperature cure 12 hours, form acroleic acid polyurethane bottom；Spray antiradar coatings again, 1550 μm of thickness, normal temperature cure 24 hours,
Formed and inhale ripple layer；Finally spray unmaned platform, form anti-corrosion surface layer, 230 μm of thickness, normal temperature cure 12 hours, i.e.,
Obtain anticorrosion microwave absorbing coating.
The preparation method of wherein described antiradar coatings is：
By 557g performed polymers type polyurethane resin, the anti-heavy agent 2810 of 5.7g dispersant Bs YK-161,3.5g, 195g diluents
(dimethylbenzene：Butyl acetate：Methylisobutylketone：Cyclohexanone=4:2:1:1, mass ratio) it is added in beaker, using mixer pair
It is disperseed, and speed of agitator is arranged to 1200rpm；After stirring 20min, 45g conductive black absorbents are gradually slowly added to, are treated
Absorbent continues to stir 40min to well mixed after adding；Add 3,3 ' two chloro- 4,4 '-diamino-diphenyl of 25g curing agent
Methane, after stirring 10min, obtain sprayable antiradar coatings.
The present embodiment of embodiment 4~6 provides a kind of anticorrosion microwave absorbing coating, and its preparation method and embodiment 1 are basically identical,
Difference is：Acroleic acid polyurethane bottom, the thickness for inhaling ripple layer and anti-corrosion surface layer, are specifically shown in Table 1.
Comparative example 1~3
This comparative example provides a kind of microwave absorbing coating, and its preparation method and embodiment 1 are basically identical, and difference is：
Anti-corrosion surface layer in these three comparative example floating coats is that conventional polyurethanes antifouling paint (solid content 60 is respectively adopted
± 5%), epoxy anticorrosion paint, acrylic acid antifouling paint are coated on the surface gained for inhaling ripple layer.
Experimental example
With reference to performance test data to the microwave absorbing coating that is provided in the embodiment of the present invention 1~6 and comparative example 1~3
Effect in terms of ripple and anti-corrosion is inhaled is evaluated：
Following standard methods are respectively adopted to carry out microwave absorbing coating obtained in embodiment 1~6 and comparative example 1~3
Test：
A. the coating model being cured is used into GJB2038A-2011《Radar absorbing reflectivity test method》Test
Its 8GHz~18GHz frequency range reflectivity, its average reflectance are designated as reflectivity a；
B. the coating model being cured is used into GJB150.11A-2009《Military hardware laboratory environment test method》Survey
Its salt spray resistance is tried, after experiment in 2000 hours, appearance of coat is observed, tests its 8GHz~18GHz frequency range reflectivity, it is flat
Equal reflectivity is designated as reflectivity b.
As a result it is as shown in table 1：
As can be seen from Table 1, the microwave absorbing coating that the embodiment of the present invention 1~6 provides, in 8GHz~18GHz band limits
Reflectivity is respectively less than -3.0dB, there is preferable wave-absorbing effect；In the test of its salt spray resistance, after test in 2000 hours, apply
The well-tended appearance of layer, without change colour, be layered, come off, bubble phenomena such as occur, and its wave-sucking performance keeps original state substantially, by
This explanation, the microwave absorbing coating that the embodiment of the present invention 1~6 provides, has excellent antiseptic property and absorbing property.
And the microwave absorbing coating that comparative example 1~3 provides, compared with Example 1, its difference is the anticorrosive paint used
For existing common antifouling paint, test result shows the microwave absorbing coating that comparative example 1~3 provides, and under the same conditions, process is resistance to
After salt fog performance test, there is phenomena such as changing colour, wrinkle, being layered, coming off in coating, and its wave-sucking performance is also far below initial shape
State.Thus further illustrate, anti-corrosion surface layer pair made from the unmaned platform that microwave absorbing coating provided by the invention uses
The absorbing property and antiseptic property of whole microwave absorbing coating have vital influence.
Although illustrate and describing the present invention with specific embodiment, but will be appreciated that without departing substantially from the present invention's
Many other change and modification can be made in the case of spirit and scope.It is, therefore, intended that in the following claims
Including belonging to all such changes and modifications in the scope of the invention.
Claims (10)
- A kind of 1. anticorrosion microwave absorbing coating, it is characterised in that its acroleic acid polyurethane bottom for including being arranged in order, inhale ripple layer and Anti-corrosion surface layer, the anti-corrosion surface layer are as obtained by by surface of the unmaned platform coated on the suction ripple layer.
- 2. anticorrosion microwave absorbing coating according to claim 1, it is characterised in that the coating layer thickness of the anti-corrosion surface layer is 50 ~500 μm.
- 3. anticorrosion microwave absorbing coating according to claim 1, it is characterised in that the coating layer thickness for inhaling ripple layer is 300 ~2000 μm.
- 4. anticorrosion microwave absorbing coating according to claim 1, it is characterised in that the suction ripple layer is by by antiradar coatings Obtained by surface coated on the acroleic acid polyurethane bottom；The raw material of the antiradar coatings includes by mass percentage：
- 5. anticorrosion microwave absorbing coating according to claim 4, it is characterised in that the absorbent include ferrite, iron powder, At least one of iron sial, iron silicochromium and carbon black.
- 6. anticorrosion microwave absorbing coating according to claim 4, it is characterised in that described matrix resin includes different by toluene two Cyanate, polyester diol and PEPA react obtained performed polymer type polyurethane.
- 7. anticorrosion microwave absorbing coating according to claim 4, it is characterised in that the curing agent is aromatic diamine；It is excellent Choosing, the aromatic diamine includes：3,5- diformazan sulfydryls toluenediamine, 3,5- diethyl toluene diamines, 2,4- diaminourea -3, At least one of 5- diformazan sulfydryl chlorobenzenes and 3,3 ' two chloro- 4,4 '-diaminodiphenyl-methanes.
- 8. anticorrosion microwave absorbing coating according to claim 4, it is characterised in that the diluent include toluene, dimethylbenzene, Two or more mixture in butyl acetate, methylisobutylketone, butanone and cyclohexanone.
- 9. anticorrosion microwave absorbing coating according to claim 4, it is characterised in that the preparation method bag of the antiradar coatings Include：By mass percentage, described matrix resin, the dispersant, the anti-heavy agent are mixed with the diluent, in 1000 After stirring 20~40min under~1200rmp rotating speed, the absorbent is added, after continuing 20~40min of stirring, is added solid Agent, stir 3~10min.
- 10. according to the preparation method of any one of the claim 1~9 anticorrosion microwave absorbing coating, it is characterised in that it includes：Acroleic acid polyurethane coating is sprayed in substrate surface, forms the acroleic acid polyurethane bottom, the acroleic acid polyurethane The dry film coating thickness of bottom is 20~100 μm；Antiradar coatings are sprayed on the acroleic acid polyurethane bottom after hardening, form the suction ripple layer, the suction ripple layer Dry film coating thickness is 300~2000 μm；Suction ripple layer surface spraying unmaned platform after hardening again, forms the anti-corrosion surface layer, the anti-corrosion surface layer Dry film coating thickness be 50~500 μm.
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| CN110591493A (en) * | 2018-06-13 | 2019-12-20 | 洛阳尖端技术研究院 | Wave-absorbing material |
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