CN109423181A - A kind of infrared coating and preparation method thereof of compatible radar invisible - Google Patents
A kind of infrared coating and preparation method thereof of compatible radar invisible Download PDFInfo
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- CN109423181A CN109423181A CN201710511870.9A CN201710511870A CN109423181A CN 109423181 A CN109423181 A CN 109423181A CN 201710511870 A CN201710511870 A CN 201710511870A CN 109423181 A CN109423181 A CN 109423181A
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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
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- C09—DYES; PAINTS; POLISHES; NATURAL RESINS; ADHESIVES; COMPOSITIONS NOT OTHERWISE PROVIDED FOR; APPLICATIONS OF MATERIALS NOT OTHERWISE PROVIDED FOR
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- C09D127/00—Coating compositions based on homopolymers or copolymers of compounds having one or more unsaturated aliphatic radicals, each having only one carbon-to-carbon double bond, and at least one being terminated by a halogen; Coating compositions based on derivatives of such polymers
- C09D127/02—Coating compositions based on homopolymers or copolymers of compounds having one or more unsaturated aliphatic radicals, each having only one carbon-to-carbon double bond, and at least one being terminated by a halogen; Coating compositions based on derivatives of such polymers not modified by chemical after-treatment
- C09D127/12—Coating compositions based on homopolymers or copolymers of compounds having one or more unsaturated aliphatic radicals, each having only one carbon-to-carbon double bond, and at least one being terminated by a halogen; Coating compositions based on derivatives of such polymers not modified by chemical after-treatment containing fluorine atoms
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- C09D183/00—Coating compositions based on macromolecular compounds obtained by reactions forming in the main chain of the macromolecule a linkage containing silicon, with or without sulfur, nitrogen, oxygen, or carbon only; Coating compositions based on derivatives of such polymers
- C09D183/04—Polysiloxanes
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- C09D183/00—Coating compositions based on macromolecular compounds obtained by reactions forming in the main chain of the macromolecule a linkage containing silicon, with or without sulfur, nitrogen, oxygen, or carbon only; Coating compositions based on derivatives of such polymers
- C09D183/04—Polysiloxanes
- C09D183/08—Polysiloxanes containing silicon bound to organic groups containing atoms other than carbon, hydrogen, and oxygen
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- C09D5/00—Coating compositions, e.g. paints, varnishes or lacquers, characterised by their physical nature or the effects produced; Filling pastes
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- C09D5/00—Coating compositions, e.g. paints, varnishes or lacquers, characterised by their physical nature or the effects produced; Filling pastes
- C09D5/18—Fireproof paints including high temperature resistant paints
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- C09D5/00—Coating compositions, e.g. paints, varnishes or lacquers, characterised by their physical nature or the effects produced; Filling pastes
- C09D5/30—Camouflage paints
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- 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
- C08K3/00—Use of inorganic substances as compounding ingredients
- C08K3/02—Elements
- C08K3/08—Metals
- C08K2003/0812—Aluminium
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- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08L—COMPOSITIONS OF MACROMOLECULAR COMPOUNDS
- C08L2201/00—Properties
- C08L2201/08—Stabilised against heat, light or radiation or oxydation
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- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
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Abstract
The present invention provides a kind of preparation methods of the infrared coating of compatible radar invisible, comprising: 66-72 portions of resin binders, 28-34 parts of aluminium powders, 8-24 parts of pigments and fillers, 10-20 parts of mill bases is taken to be uniformly mixed so that pre-dispersed slurry is prepared；Diluent and auxiliary rheological agents are added into pre-dispersed slurry with will be in the range of the viscosity-adjusting agent to 13-18s of pre-dispersed slurry；Curing agent is added into pre-dispersed slurry, is uniformly dispersed, the infrared coating of compatible radar invisible is prepared；The infrared coating that would be compatible with radar invisible is sprayed on absorbing material to obtain coating；And by coating surface drying.Radar compatible type infrared coating of the present invention can be suitable for multiclass Radar Stealth Materials, realize infrared radar multi-Functional Camouflage, and have many advantages, such as it is at low cost, have excellent performance and with equip form fit it is good.
Description
Technical field
The invention belongs to functional coating material technical fields, more particularly, to a kind of infrared painting of compatible radar invisible
Layer and preparation method thereof.
Background technique
At this stage, stealth technology has radar invisible, infrared stealth, laser camouflage, Sound stealth and visible light stealth etc..It is existing
Stage, radar was about 60% in the target acquisition of military spacecraft, infrared by 30%, and other 10%.Therefore, military field
Chief threat is still radar and infrared acquisition at present.Stealth technology research is also attached most importance to radar and infrared stealth, same to time control
The other signals features such as laser processed, sound, visible light, to obtain multi-functional, high performance stealthy functional material and structural material.
But research shows that radar absorbing requires material high-selenium corn, low reflection, but the electromagnetic energy absorbed is in material
Portion is converted into thermal energy, increases the surface temperature of material, is easily identified by infrared detector.In addition, infrared stealth requires material
Low absorption, high reflection, this reflects back radar wave directly on the surface of the material, and the effect of radar invisible is not achieved.Therefore, it grinds
Study carefully the hot spot that compatible infrared and radar Multi-band stealth has become research.
Previous infrared radar multi-Functional Camouflage coating, due to containing a large amount of unscreened highly conductive pigments and fillers, coating compared with
Thickness does not carry out the reasons such as dielectric regulation and keeps coating dielectric constant higher, to radar wave reflectivity with higher, makes to be compatible with hidden
The radar invisible performance of stature material is greatly lowered.In addition, structural type compatible camouflage materials such as crystal film with photon, frequency-selective surfaces
Deng because its processing technology it is complicated, it is at high cost, with the equipment reasons such as form fit difference, engineering widely applies property not high.
Summary of the invention
In order to solve defect existing in the prior art, the purpose of the present invention is to provide a kind of high-permeabilities and low reflection
The infrared coating of the compatibility radar invisible of property, to realize infrared radar multi-Functional Camouflage performance.
According to an aspect of the invention, there is provided a kind of preparation method of the infrared coating of compatible radar invisible, special
Sign is, comprising: 66-72 portions of resin binders, 28-34 parts of aluminium powders, 8-24 parts of pigments and fillers, 10-20 parts of mill bases is taken to be uniformly mixed
Pre-dispersed slurry is prepared；Diluent and auxiliary rheological agents are added into the pre-dispersed slurry with by the pre-dispersed slurry
Viscosity-adjusting agent to 13-18s in the range of；Curing agent is added into the pre-dispersed slurry, is uniformly dispersed, compatibility is prepared
The infrared coating of radar invisible；The infrared coating of the compatible radar invisible is sprayed on absorbing material to obtain coating；With
And by the coating surface drying.
In the above preparation method, it is described take 66-72 portions of resin binders, 28-34 parts of aluminium powders, 8-24 parts of pigments and fillers,
In the step of 10-20 parts of mill bases are uniformly mixed so that pre-dispersed slurry is prepared, through high speed disperser at 200-450rpm
Stirring 0.4-0.8h implement the resin binder, the aluminium powder, the pigments and fillers and the mill base mixture, and side is stirred
It mixes side and diluent is added.
In the above preparation method, before the step of diluent and auxiliary rheological agents are added into the pre-dispersed slurry,
After the step of diluent and auxiliary rheological agents are added into the pre-dispersed slurry, further comprise: pre- point will be stirred
Bulk cargo slurry stands 24-48h at room temperature, or is put into ball grinder on ball mill after 20-60rpm ball-milling at variable speed 8-12h, quiet
Set 1-3h；Pre-dispersed good slurry is diluted, investment laboratory sand mill is ground, and is put into after grinding 0.3h-0.5h
Agitator tank；Diluent is added into ground material to be stirred with high speed disperser, revolving speed is less than 500rpm.
In the above preparation method, further comprise by the step of coating surface drying: by the coating in clean room
Surface drying 12h or more or refer to grind surface drying after toast 2-4h under 60-80 DEG C of temperature environment.
In the above preparation method, the resin binder is polyurethane, fluororesin, epoxy modified silicone resin, gathers
The combination of one or more of urethane modified organic silicone resin, fluorine richness polyurethane.
In the above preparation method, the pigments and fillers are polytetrafluoroethylene (PTFE), polyimides, polyphenylene oxide, fluorine doped polyimides
One or more of combination.
In the above preparation method, the mill base is blue, green, yellow or black color paste.
In the above preparation method, the diluent is ethyl acetate, butyl acetate, dimethylbenzene, cyclohexanone, isophorone
One or more of combination；The auxiliary rheological agents be fumed silica, talcum powder, aluminum magnesium silicate, modified alta-mud,
The combination of one or more of polyethylene wax.
In the above preparation method, the curing agent is the isocyanates such as TDI addition product, HDI biuret, HDI trimer
One or more of combination.
According to another aspect of the present invention, it is hidden to additionally provide a kind of compatibility radar being prepared according to above-mentioned preparation method
The infrared coating of body.
The present invention solves the problems, such as that infrared stealth for a long time is incompatible with radar invisible, realizes for radar-wave absorbing
Coating and infrared stealth Performance Match with the consistent Meta Materials class absorbing material of Circuit analogous absorber principle.The present invention is compatible
For type infrared low-emissivity coating layer thickness less than 35 μm, 8-14 μm of infrared emittance is average to 2-18GHz radar wave anti-less than 0.2
Rate is penetrated less than or equal to 10%, 2-18GHz band radar drain performance is influenced to be less than 3dB, is achieved the effect that excellent.
Present invention could apply to absorption coating, Circuit analogous absorber base Meta Materials etc., and infrared coating to be required to have
The Radar Stealth Materials of high-permeability and low reflectivity, to realize infrared radar multi-Functional Camouflage performance.It can be used for aircraft, fire
Arrow, land face equipment and surface vessel etc., improve the synthesis Stealth Fighter of equipment.
Radar compatible type infrared coating of the present invention can be suitable for multiclass Radar Stealth Materials, realize that infrared radar compatibility is hidden
Body, and have many advantages, such as it is at low cost, have excellent performance and with equipment form fit it is good.
By the way that infrared coating pigments and fillers are selected and controlled in the present invention so that pigments and fillers can either meet it is infrared property
Energy (requiring it with high conductivity high reflectance), and compatible radar invisible performance (require pigments and fillers that there is low conductivity,
Low dielectric parameter), therefore, the present invention is by selecting suitable pigments and fillers and carrying out such as pattern, size, content to pigments and fillers
Control, realizes the preparation of radar compatible type infrared coating, and the simple process and low cost, the radar compatible type prepared is red
External coating is had excellent performance.
Detailed description of the invention
It in order to more clearly explain the embodiment of the invention or the technical proposal in the existing technology, below will be to institute in embodiment
Attached drawing to be used is needed to be briefly described, it should be apparent that, the accompanying drawings in the following description is only some implementations of the invention
Example, for those of ordinary skill in the art, without creative efforts, can also obtain according to these attached drawings
Obtain other attached drawings.
Fig. 1 is the work of the method for the infrared coating for being used to prepare compatible radar invisible according to some embodiments of the present invention
Skill process.
Specific embodiment
Following will be combined with the drawings in the embodiments of the present invention, and technical solution in the embodiment of the present invention carries out clear, complete
Site preparation description, it is clear that described embodiments are only a part of the embodiments of the present invention, instead of all the embodiments.It is based on
Embodiment in the present invention, those of ordinary skill in the art's every other embodiment obtained belong to what the present invention protected
Range.
The preparation method of heat-resistance type infrared low-emissivity coating provided by the invention, comprising the following steps:
Shown in step S101 as shown in fig. 1,66-72 portions of resin binders, 28-34 parts of aluminium powders, 8-24 parts of face is taken to fill out
Material, 10-20 parts of mill bases are uniformly mixed so that pre-dispersed slurry is prepared, and are stirred at 200-450rpm by high speed disperser
The mixing of 0.4-0.8h implementation resin binder, aluminium powder, pigments and fillers and mill base.Preferably, 68 portions of resin binders, 27 parts are weighed
Aluminium powder, 16 parts of pigments and fillers, 15 parts of mill bases, stir 0.6h with high speed disperser at 300 rpm, diluent are added while stirring.Its
In, pigments and fillers are the lower low dielectric pigments and fillers of dielectric constant, such as low dielectric pigments and fillers of the dielectric constant less than 3.0, resin
Adhesive is polyurethane, in fluororesin, epoxy modified silicone resin, polyurethane-modified organic siliconresin, fluorine richness polyurethane
One or more kinds of combinations.Pigments and fillers are one of polytetrafluoroethylene (PTFE), polyimides, polyphenylene oxide, fluorine doped polyimides
Or a variety of combination.Mill base is blue, green, yellow or black color paste.
Then, the pre-dispersed slurry being stirred is stood into 24-48h at room temperature, or is put into ball grinder on ball mill
After 20-60rpm ball-milling at variable speed 8-12h, 1-3h is stood；Preferably, the pre-dispersed slurry being stirred is stood at room temperature
36h, or ball grinder is put on ball mill after 40rpm ball-milling at variable speed 10h, stand 2h.
Pre-dispersed good slurry is subjected to dilution appropriate, investment laboratory sand mill is ground, and 0.3h- is ground
Agitator tank is put into after 0.5h, preferably 0.5h；
Diluent appropriate is added into ground material to be stirred with high speed disperser, revolving speed is less than 500rpm, excellent
It is selected as 400rpm.
Shown in step S102 as shown in fig. 1, diluent is added into pre-dispersed slurry and auxiliary rheological agents are pre- to adjust
Disperse the viscosity of slurry.Wherein, diluent is one of ethyl acetate, butyl acetate, dimethylbenzene, cyclohexanone, isophorone
Or a variety of combination；Auxiliary rheological agents are fumed silica, in talcum powder, aluminum magnesium silicate, modified alta-mud, polyethylene wax
One or more kinds of combinations.In the range of the viscosity-adjusting agent to 13-18s of pre-dispersed slurry, it is preferably adjusted to 15s.
Shown in step S103 as shown in fig. 1, curing agent is added into pre-dispersed slurry, is uniformly dispersed, is prepared
The infrared coating of compatible radar invisible, wherein curing agent is in the isocyanates such as TDI addition product, HDI biuret, HDI trimer
One or more kinds of combinations.
Shown in step S104 as shown in fig. 1, would be compatible with radar invisible infrared coating be sprayed on absorbing material with
Obtain coating.Wherein, the absorbing material is microwave absorbing coating or breadboardin absorber.
Shown in step S105 as shown in fig. 1, by coating surface drying, specifically, by coating clean room surface drying 12h with
It is upper or refer to grind surface drying after in 60-80 DEG C of environment toast 2-4h, it is preferable that by coating surface drying 12h or more or after referring to and grinding surface drying
3h is toasted in 70 DEG C of environment.
Embodiment 1
1,66 parts of resin binder polyurethane is weighed, 34 parts of aluminium powder is added, 8 parts of low dielectric pigments and fillers poly- four are added
Vinyl fluoride, the blue (either green or yellow or black color paste) for being added 15 parts, are stirred at 450 rpm with high speed disperser
0.4h is mixed, suitable diluent ethyl acetate is added while stirring；
2, the pre-dispersed slurry being stirred is stood for 24 hours at room temperature, or is put into ball grinder (grinding bead diameter is greater than
8mm) on planetary ball mill after 20rpm ball-milling at variable speed 8h, 1h is stood；
3, pre-dispersed good slurry is subjected to dilution appropriate, investment laboratory sand mill is ground, and (grinding medium is upright
Diameter is greater than 0.8mm), agitator tank is put into after grinding 0.4h；
4, diluent ethyl acetate appropriate will be added in ground material to be stirred with high speed disperser, revolving speed
450rpm adds suitable diluent ethyl acetate, the progress rheological property adjusting of auxiliary rheological agents talcum powder during stirring,
To be 16s by the viscosity-adjusting agent of pre-dispersed slurry；
5, after adjusting the rheological properties such as viscosity, the curing agent HDI trimer calculated is added, dispersion is sprayed after mixing evenly
It is coated on microwave absorbing coating, all paint vehicles mixed up should construct within 1h and finish；
6, the exemplar sprayed more than clean room surface drying 12h or refer to grind surface drying after in 60 DEG C of environment toast 4h；
7, infrared low-emissivity performance test and radar-wave absorbing performance test are carried out to exemplar；
8, environmental resistance such as high temperature resistant, low temperature, cooling thermal impact performance and resistance to Neutral Salt Spray Corrosion is carried out to exemplar to try
It tests.
Embodiment 2
1, it is poly- that 72 parts of resin binder polyurethane, the aluminium powder of 34 parts of addition, the low dielectric pigments and fillers of 24 parts of addition are weighed
Acid imide, the green mill base for being added 20 parts, stir 0.8h with high speed disperser at 200 rpm, are added while stirring suitable dilute
Release agent butyl acetate；
2, the pre-dispersed slurry being stirred is stood into 48h at room temperature, or is put into ball grinder (grinding bead diameter is greater than
8mm) on planetary ball mill after 60rpm ball-milling at variable speed 8h, 3h is stood；
3, pre-dispersed good slurry is subjected to dilution appropriate, investment laboratory sand mill is ground, and (grinding medium is upright
Diameter is greater than 0.8mm), agitator tank is put into after grinding 0.3h；
4, diluent butyl acetate appropriate will be added in ground material to be stirred with high speed disperser, revolving speed
400rpm adds suitable diluent butyl acetate during stirring, auxiliary rheological agents aluminum magnesium silicate carries out rheological property tune
Section, the viscosity-adjusting agent by pre-dispersed slurry is 15s；
5, after adjusting the rheological properties such as viscosity, the curing agent HDI trimer calculated is added, dispersion is sprayed after mixing evenly
It is coated on microwave absorbing coating, all paint vehicles mixed up should construct within 1h and finish；
6, the exemplar sprayed more than clean room surface drying 12h or refer to grind surface drying after in 80 DEG C of environment toast 2h；
7, infrared low-emissivity performance test and radar-wave absorbing performance test are carried out to exemplar；
8, environmental resistance such as high temperature resistant, low temperature, cooling thermal impact performance and resistance to Neutral Salt Spray Corrosion is carried out to exemplar to try
It tests.
Embodiment 3
1,70 parts of resin binder fluorine richness polyurethane is weighed, 30 parts of aluminium powder is added, 30 parts of low dielectric face is added
15 parts of blue mill base is added in filler fluorine doped polyimides, stirs 0.6h at 300 rpm with high speed disperser, while stirring plus
Enter suitable diluent ethyl acetate；
2, the pre-dispersed slurry being stirred is stood into 32h at room temperature, or is put into ball grinder (grinding bead diameter is greater than
8mm) on planetary ball mill after 40rpm ball-milling at variable speed 10h, 2h is stood；
3, pre-dispersed good slurry is subjected to dilution appropriate, investment laboratory sand mill is ground, and (grinding medium is upright
Diameter is greater than 0.8mm), agitator tank is put into after grinding 0.5h；
4, diluent ethyl acetate appropriate will be added in ground material to be stirred with high speed disperser, revolving speed
420rpm adds suitable diluent ethyl acetate during stirring, auxiliary rheological agents modified alta-mud carries out rheological property
It adjusts, the viscosity-adjusting agent by pre-dispersed slurry is 17s；
5, after adjusting the rheological properties such as viscosity, the curing agent HDI trimer calculated is added, dispersion is sprayed after mixing evenly
It is coated on Circuit analogous absorber, all paint vehicles mixed up should construct within 1h and finish；
6, the exemplar sprayed more than clean room surface drying 12h or refer to grind surface drying after in 70 DEG C of environment toast 3h；
7, infrared low-emissivity performance test and radar-wave absorbing performance test are carried out to exemplar；
8, environmental resistance such as high temperature resistant, low temperature, cooling thermal impact performance and resistance to Neutral Salt Spray Corrosion is carried out to exemplar to try
It tests.
Embodiment 4
1,68 parts of the polyurethane-modified organic siliconresin of resin binder is weighed, 34 parts of aluminium powder is added, is added 26 parts
Low dielectric pigments and fillers polytetrafluoroethylene (PTFE), the blue mill base for being added 18 parts, stir 0.7h at 400rpm with high speed disperser, while stirring
It mixes side and suitable diluent ethyl acetate is added；
2, the pre-dispersed slurry being stirred is stood into 40h at room temperature, or is put into ball grinder (grinding bead diameter is greater than
8mm) on planetary ball mill after 50rpm ball-milling at variable speed 9h, 1.5h is stood；
3, pre-dispersed good slurry is subjected to dilution appropriate, investment laboratory sand mill is ground, and (grinding medium is upright
Diameter is greater than 0.8mm), agitator tank is put into after grinding 0.4h；
4, diluent ethyl butyrate appropriate will be added in ground material to be stirred with high speed disperser, revolving speed
480rpm adds suitable diluent ethyl butyrate during stirring, auxiliary rheological agents polyethylene wax carries out rheological property tune
Section, the viscosity-adjusting agent by pre-dispersed slurry is 14s；
5, after adjusting the rheological properties such as viscosity, the curing agent HDI trimer calculated is added, dispersion is sprayed after mixing evenly
It is coated on microwave absorbing coating, all paint vehicles mixed up should construct within 1h and finish；
6, the exemplar sprayed more than clean room surface drying 12h or refer to grind surface drying after in 75 DEG C of environment toast 3.5h.
7, infrared low-emissivity performance test and radar-wave absorbing performance test are carried out to exemplar；
8, environmental resistance such as high temperature resistant, low temperature, cooling thermal impact performance and resistance to Neutral Salt Spray Corrosion is carried out to exemplar to try
It tests.
Embodiment 5
1,67 parts of resin binder epoxy modified silicone resin is weighed, 33 parts of aluminium powder is added, 29 parts low is added
Dielectric pigments and fillers polytetrafluoroethylene (PTFE), the yellow mill base for being added 17 parts stir 0.5h, side stirring with high speed disperser at 440rpm
Suitable diluent ethyl acetate is added in side；
2, the pre-dispersed slurry being stirred is stood into 46h at room temperature, or is put into ball grinder (grinding bead diameter is greater than
8mm) on planetary ball mill after 45rpm ball-milling at variable speed 11h, 2.5h is stood；
3, pre-dispersed good slurry is subjected to dilution appropriate, investment laboratory sand mill is ground, and (grinding medium is upright
Diameter is greater than 0.8mm), agitator tank is put into after grinding 0.5h；
4, diluent appropriate will be added in ground material to be stirred with high speed disperser, revolving speed 300rpm is being stirred
Suitable diluent ethyl acetate, the progress rheological property adjusting of auxiliary rheological agents fumed silica are added during mixing, it will
The viscosity-adjusting agent of pre-dispersed slurry is 15s；
5, after adjusting the rheological properties such as viscosity, the curing agent HDI trimer calculated is added, dispersion is sprayed after mixing evenly
It is coated on Circuit analogous absorber, all paint vehicles mixed up should construct within 1h and finish；
6, the exemplar sprayed more than clean room surface drying 12h or refer to grind surface drying after in 65 DEG C of environment toast 3.5h；
7, infrared low-emissivity performance test and radar-wave absorbing performance test are carried out to exemplar；
8, environmental resistance such as high temperature resistant, low temperature, cooling thermal impact performance and resistance to Neutral Salt Spray Corrosion is carried out to exemplar to try
It tests.
Embodiment 6
1,68 parts of resin binder fluororesin is weighed, 32 parts of aluminium powder is added, 23 parts of low dielectric pigments and fillers are added mix
Fluorine polyimides, the black color paste for being added 16 parts, stir 0.6h with high speed disperser at 280rpm, are added while stirring appropriate
Diluent butyl acetate；
2, the pre-dispersed slurry being stirred is stood into 32h at room temperature, or is put into ball grinder (grinding bead diameter is greater than
8mm) on planetary ball mill after 50rpm ball-milling at variable speed 11h, 3h is stood；
3, pre-dispersed good slurry is subjected to dilution appropriate, investment laboratory sand mill is ground, and (grinding medium is upright
Diameter is greater than 0.8mm), agitator tank is put into after grinding 3 circulations；
4, diluent butyl acetate appropriate will be added in ground material to be stirred with high speed disperser, revolving speed
400rpm adds suitable diluent butyl acetate, the progress rheological property adjusting of auxiliary rheological agents talcum powder during stirring,
To be 15s by the viscosity-adjusting agent of pre-dispersed slurry；
5, after adjusting the rheological properties such as viscosity, the curing agent HDI trimer calculated is added, dispersion is sprayed after mixing evenly
It is coated on microwave absorbing coating, all paint vehicles mixed up should construct within 1h and finish；
6, the exemplar sprayed more than clean room surface drying 12h or refer to grind surface drying after in 80 DEG C of environment toast 4h；
7, infrared low-emissivity performance test and radar-wave absorbing performance test are carried out to exemplar；
8, environmental resistance such as high temperature resistant, low temperature, cooling thermal impact performance and resistance to Neutral Salt Spray Corrosion is carried out to exemplar to try
It tests.
Above-mentioned performance test is carried out to the infrared coating for the compatibility radar invisible being prepared in embodiment 1-6, is used
FTIR bounce technique and IR-2 bounce technique are tested, wherein testing result shows: preparation-obtained compatible radar invisible
The thickness of infrared coating is respectively less than 35 μm；The infrared emittance of the infrared coating of preparation-obtained compatible radar invisible is lower,
8-14 μm of infrared emittance is below 0.15, is respectively less than to 2-18GHz radar wave average reflectance or equal to 10%；It is prepared
The infrared coating of obtained compatibility radar invisible influences 2-18GHz absorbing property to be respectively less than 3dB；Preparation-obtained compatible thunder
Up to the stealthy equal high temperature resistant of infrared coating, normal by 4h rear surface at a temperature of 150 DEG C, binding force does not die down；It is prepared
The infrared coating of obtained compatibility radar invisible is also low temperature resistant, also normal by 4h rear surface at a temperature of -50 DEG C, binding force
Also it does not die down；The infrared coating of preparation-obtained compatible radar invisible moment in -50 DEG C of -150 DEG C of temperature ranges replaces
Impact that 3 circulation rear surfaces are normal, and binding force is not deteriorated；During the infrared coating of preparation-obtained compatible radar invisible is resistance to
Property salt air corrosion be greater than 200h.
The above is merely preferred embodiments of the present invention, be not intended to limit the invention, it is all in spirit of the invention and
Within principle, any modification, equivalent replacement, improvement and so on be should all be included in the protection scope of the present invention.
Claims (10)
1. a kind of preparation method of the infrared coating of compatible radar invisible characterized by comprising
66-72 portions of resin binders, 28-34 parts of aluminium powders, 8-24 parts of pigments and fillers, 10-20 parts of mill bases are taken to be uniformly mixed to be prepared into
To pre-dispersed slurry；
Diluent and auxiliary rheological agents are added into the pre-dispersed slurry with by the viscosity-adjusting agent of the pre-dispersed slurry to 13-
In the range of 18s；
Curing agent is added into the pre-dispersed slurry, is uniformly dispersed, the infrared coating of compatible radar invisible is prepared；
The infrared coating of the compatible radar invisible is sprayed on absorbing material to obtain coating；And
By the coating surface drying.
2. preparation method according to claim 1, which is characterized in that take 66-72 parts of resin binders, 28-34 described
In the step of part aluminium powder, 8-24 parts of pigments and fillers, 10-20 parts of mill bases are uniformly mixed so that pre-dispersed slurry is prepared, pass through high speed
Dispersion machine stirs 0.4-0.8h at 200-450rpm and implements the resin binder, the aluminium powder, pigments and fillers and described
The mixing of mill base, and the diluent is added while stirring.
3. preparation method according to claim 1, which is characterized in that into the pre-dispersed slurry be added diluent and
After the step of auxiliary rheological agents, the preparation method further comprises:
The pre-dispersed slurry being stirred is stood into 24-48h at room temperature, or is put into ball grinder 20-60rpm on ball mill and becomes
After revolving speed ball milling 8-12h, 1-3h is stood；
Pre-dispersed good slurry is diluted, investment laboratory sand mill is ground, and is put into stirring after grinding 0.3h-0.5h
Tank；
Diluent is added into ground material to be stirred with high speed disperser, revolving speed is less than 500rpm.
4. preparation method according to claim 1, which is characterized in that further comprise by the step of coating surface drying:
By the coating more than clean room surface drying 12h or refer to grind surface drying after toast 2-4h under 60-80 DEG C of temperature environment.
5. preparation method according to claim 1, which is characterized in that the resin binder is polyurethane, fluororesin, ring
The combination of one or more of oxygen modified organic silicone resin, polyurethane-modified organic siliconresin, fluorine richness polyurethane.
6. preparation method according to claim 1, which is characterized in that the pigments and fillers be polytetrafluoroethylene (PTFE), polyimides,
The combination of one or more of polyphenylene oxide, fluorine doped polyimides.
7. preparation method according to claim 1, which is characterized in that the mill base is blue, green, yellow or black
Mill base.
8. preparation method according to claim 1, which is characterized in that the diluent is ethyl acetate, butyl acetate, two
The combination of one or more of toluene, cyclohexanone, isophorone；The auxiliary rheological agents be fumed silica, talcum powder,
The combination of one or more of aluminum magnesium silicate, modified alta-mud, polyethylene wax.
9. preparation method according to claim 1, which is characterized in that the curing agent be TDI addition product, HDI biuret,
The combination of one or more of the isocyanates such as HDI trimer.
10. a kind of compatibility radar invisible that preparation method according to claim 1 to 9 is prepared is infrared
Coating.
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| Application Number | Priority Date | Filing Date | Title |
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| CN201710511870.9A CN109423181B (en) | 2017-06-27 | 2017-06-27 | Infrared coating compatible with radar stealth and preparation method thereof |
| PCT/CN2018/083682 WO2019001104A1 (en) | 2017-06-27 | 2018-04-19 | Infrared coating compatible with radar stealth, and method for preparing same |
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| CN201710511870.9A CN109423181B (en) | 2017-06-27 | 2017-06-27 | Infrared coating compatible with radar stealth and preparation method thereof |
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| CN109423181B CN109423181B (en) | 2021-10-22 |
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| WO (1) | WO2019001104A1 (en) |
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Also Published As
| Publication number | Publication date |
|---|---|
| WO2019001104A1 (en) | 2019-01-03 |
| CN109423181B (en) | 2021-10-22 |
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