150results about "Camouflage paints" patented technology

The invention discloses an organic / inorganic hybrid high-refractive-index carbonized polymer dot film layer and a preparation method thereof, and belongs to the technical field of preparation of high-refractive-index nanoparticles. The preparation method comprises the following steps: firstly, preparing CPDs with a high refractive index by a solvothermal method, and then dissolving the CPDs in a solvent uniformly to obtain a film layer curing liquid; and coating a base material with the mixture, and carrying out thermocuring to prepare the high-refractive-index carbonized polymer dot film layer. The prepared high-refractive-index carbonized polymer dot film layer is high in refractive index and easy and convenient to form and process, an antireflection coating can be prepared by preparing film layers with different refractive index gradients, the visible light transmittance of a base material is increased, and the high-refractive-index carbonized polymer dot film layer can be applied to improving the light extraction efficiency of an OLED. Or the high-refractive-index carbonized polymer dot film layer and the low-refractive-index polymer are laminated to prepare the Bragg reflector, the high reflectivity of light of a specific wave band is achieved by controlling the thickness of the laminated layer, and the Bragg reflector can be applied to a colorful structural color anti-counterfeiting coating.

The invention provides a microwave-transmitting and infrared-compatible low-emissivity coating, and belongs to the technical field of camouflage materials. The microwave-transmitting and infrared-compatible low-emissivity coating is of a double-layer structure composed of a bottom microwave transparent layer and a surface infrared functional layer. The microwave transparent layer is made of hollow dielectric microbeads and polyvinylidene fluoride; the infrared functional layer is made of modified flaky aluminum powder, modified hexagonal boron nitride nanosheets and polyvinylidene fluoride. The microwave-transmitting compatible infrared low-emissivity coating provided by the invention has an infrared radiation inhibition effect in two atmospheric window wave bands of 3-5 microns and 8-14 microns, and has high transmissivity in an electromagnetic wave band of 2-18 GHz; the method is especially suitable for the scenes, such as stealth unmanned aerial vehicles, ship decks and 5G base station shells, where infrared characteristics need to be suppressed and microwave signal transmission needs to be kept at the same time.

The invention belongs to the technical field of stealth coating performance analysis, and relates to a normal-temperature anti-corrosion stealth coating and a design method and application thereof. The method comprises the following steps: firstly, respectively carrying out corrosion resistance analysis on a magnetic absorbent and a binder; based on a corrosion resistance analysis result, selecting an optimal modified magnetic absorbent and an optimal modified binder for preparation, and preparing a stealth coating; and finally, by analyzing the influence of the ratio of the modified magnetic absorbent to the modified binder and the thickness of the wave-absorbing coating on the wave-absorbing performance, the preparation process of the stealth coating is adjusted, so that all the performances of the stealth coating meet index requirements, the design of the target coating is completed, and the application prospect is wide. The invention aims to solve the problem of poor corrosion resistance of the wave-absorbing coating used by the existing water surface large-scale equipment.

The invention discloses a high-weather-resistance photocuring coating with radar infrared stealth and intelligent anti-counterfeiting functions and preparation, and relates to the technical field of special functional materials. According to the coating, stealth, anti-counterfeiting and extreme environment tolerance are realized through multi-component collaborative design: matrix resin is prepared by compounding organic fluorine modified epoxy acrylate and polyurethane acrylate, and trifluoro propyl trimethoxy silane and polyoxyethylene ether block copolymer are introduced, so that weather resistance is improved; the photo-initiation system contains a free radical / cation composite initiator and a low-temperature initiator, and supports wide-temperature-range curing. The functional filler comprises a core-shell complex and carbon nanotube / graphene composite powder, and uniform dispersion of the filler is realized through a gradient grinding process. The method is suitable for military equipment camouflage, aerospace protection and criminal investigation anti-counterfeiting, 800-1400 [mu] m thermal radiation matching, radar wave absorption and mobile phone camera readable encryption information are achieved, and an innovative solution is provided for high-end equipment protection and information safety.

The invention discloses a breathable plant leaf biomimetic material with antifouling, self-cleaning and spectrum simulation properties and a preparation method of the breathable plant leaf biomimetic material. The breathable plant leaf biomimetic material can be applied to a base material through a two-step coating method. The first layer is a mesophyll-like porous dual-network hydrogel structure, hyperspectral pigment and moisture absorption salt are dispersed in the first layer, spectral characteristics of plant leaves in visible light and near infrared bands are simulated, and a water transpiration function controlled by plant pores is reproduced through a pore structure and a salt medium, so that stable spectral response and dynamic water exchange are realized; and the second layer is a leaf-skin-imitated coating, and has long-term stable antifouling and self-cleaning characteristics through a liquid-like super-smooth hydrophobic surface structure. The plant leaf spectrum simulation coating has anti-mud and hydrophobic properties, can still keep an excellent plant leaf spectrum simulation effect after being washed by rainwater, and can realize high-weather-resistance spectrum simulation.

The present invention discloses an infrared stealth coating for aircraft and a preparation method thereof; the present invention relates to the technical field of infrared stealth coatings, and the infrared stealth coating comprises the following components: 20-35g of collagen, 45-65mL of deionized water, 50-60mL of acetone, 12-25g of ITO powder, 7.5-14g of adhesive, 7-12g of polyaniline complex, and 16-25g of additive. In the present invention, since collagen macromolecules are rich in oxygen, nitrogen and other atoms that have a certain affinity for metal oxides, they can be used to modify and stabilize ITO nanoparticles, making the coating more stable during storage and use; and collagen itself has a certain film-forming property, and when added to the coating, it helps to form a continuous and uniform coating, thereby improving the integrity and density of the coating.

The invention relates to a filler with low glossiness, corrosion resistance and low infrared emissivity and an infrared stealth coating. The low-infrared-emissivity filler is prepared from the following raw material components in parts by mass: 20-40 parts of Cu powder, 5-15 parts of Al powder, 2-5 parts of matting powder, 1-2 parts of a first additive, 1-2 parts of a second additive and 1-12 parts of a coupling agent. The infrared stealth coating is prepared from the following raw material components in parts by mass: 2-4 parts of low-infrared-emissivity filler, 2-4 parts of a resin matrix, 2.5-3.5 parts of a curing agent and 2-15 parts of an organic solvent. Compared with the prior art, the filler and the infrared stealth coating with low infrared emissivity, low glossiness and corrosion resistance are prepared.

The invention discloses a camouflage material, a hyperspectral camouflage coating and a preparation method and application thereof, and belongs to the technical field of camouflage materials, and the molecular formula of the camouflage material is Co2Cr3TiLiNiO10. The camouflage material has the performance of simulating spectral characteristics of natural yellow and green plants and has a good bionic function, crystals of the camouflage material are of a spinel structure, and the camouflage material has the characteristics that the lightness value L is relatively low, the hue is relatively dark, a green camouflage coating is easier to prepare, the camouflage material has the characteristics of good aging resistance, good thermal stability and the like, and the camouflage material can be used as a green camouflage coating. The reflectivity of the infrared plateau area is higher, the camouflage performance is easier to realize, and the spectral characteristics of green vegetation can be better simulated.

A particularly-formed multi-layer micron-sized particle is provided that is substantially transparent, yet that exhibits selectable coloration based on its physical properties. The disclosed physical properties of the particle are controllably selectable refractive indices to provide an opaque-appearing energy transmissive material when pluralities of the particles are suspended in a substantially transparent matrix material. Multiply-layered (up to 30+ constituent layers) particles result in an overall particle diameter of less than 5 microns. The material suspensions render the particles deliverable as aspirated or aerosol compositions onto substrates to form layers that selectively scatter specific wavelengths of electromagnetic energy while allowing remaining wavelengths of the incident energy to pass. The disclosed particles and material compositions uniquely implement optical light scattering techniques in energy (or light) transmissive layers that appear selectively opaque, while allowing 80+% of the energy impinging on the light incident side to pass through the layers.

The invention discloses a color-adjustable flake-like low-emissivity coating and a preparation method, and relates to the technical field of functional coatings, the preparation method comprises the following steps: step 1, mixing an organic solvent, micron spherical aluminum powder and micron pigment particles according to a certain proportion to obtain mixed powder; step 2, adding the ball-milled beads in the step 1 and the mixed powder into a ball-milling tank for ball-milling to obtain slurry A; 3, mixing and dispersing the slurry A obtained in the step 2 and organic silicon resin to obtain slurry B; and 4, spraying and curing the coating B obtained in the step 3 to obtain the color-adjustable flaky aluminum powder low-emissivity coating. The emissivity of the prepared coating is lower than 0.35, the lightness is about 70 + / -0.5, the binding force is about 4.0 + / -0.4 Mpa, and the coating can resist the high temperature of 500-600 DEG C and is used for meeting the visible light and infrared stealth requirements of ground equipment.

The invention belongs to the technical field of functional coatings and composite materials thereof, and particularly relates to a low-infrared-emissivity coating based on aluminum powder pretreatment and a preparation method of the low-infrared-emissivity coating. Nanometer CeO2 with a porous structure and Al powder are calcined to form an interface heterojunction under the combined action of nanoparticles and nanowires, and then the interface heterojunction is used as a filler to be prepared into a low-infrared-emissivity coating with fluorocarbon resin and an auxiliary agent; after pretreatment, the aluminum powder with the interface heterojunction structure can greatly promote electron migration, so that the conductivity is improved by 2 orders of magnitude compared with that of a traditional metal oxide; and according to the Hagen-Rubens law, the conductivity is in negative correlation with the emissivity, so that the emissivity is reduced. The infrared emissivity of the final coating at the wave band of 8-14 microns is as low as 0.16, the coating has high stability, light weight, high temperature resistance and environmental erosion resistance, the preparation process is simple, the coating is suitable for the fields of aerospace thermal management, military stealth and industrial energy saving, and an innovation direction is provided for the next generation of infrared stealth coatings.

The invention discloses a preparation method of an electromagnetic wave absorbing material based on cellulose nanocrystals. The preparation method comprises the following steps: preparing cellulose nanocrystal aerogel; adding an aniline monomer, ammonium persulfate and hydrochloric acid into an ethanol solvent to obtain a mixed solution; adding the cellulose nanocrystal aerogel into the mixed solution, and carrying out in-situ polymerization; and washing the polymerized aerogel with ethanol, and carrying out vacuum drying. The cellulose nanocrystal aerogel with a chiral structure is prepared, polyaniline is polymerized on the aerogel in situ, the conductivity of the material is improved, the electromagnetic wave absorbing material based on the cellulose nanocrystal is prepared, the preparation method is simple, and the product has excellent electromagnetic wave absorbing performance such as light weight, wide frequency band and strong absorption.

The invention discloses a polytetrafluoroethylene radome film coating with an optical camouflage function and a preparation method thereof. The coating is a single-color or multi-color camouflage film coating coated on glass fiber plain cloth or a glass fiber plain cloth polymer film. Wherein the single-color camouflage paint film coating is a plurality of polytetrafluoroethylene coatings containing superfine particle camouflage paint, the multi-color camouflage paint film coating is a plurality of polytetrafluoroethylene coatings containing superfine particle camouflage paint, and the color of the single-color or multi-color camouflage paint film coating is matched with the environment where the single-color or multi-color camouflage paint film coating is located. The polytetrafluoroethylene radome film coating with the optical camouflage function is coated on the glass fiber plain cloth or the glass fiber plain cloth polymer film and is used for constructing facilities such as a large radar radome, and optical camouflage protection of the radome under visible light and near-infrared bands can be effectively realized.

A high-temperature stealth coating with adjustable wave absorption performance and a preparation method thereof belong to the technical field of high-temperature wave absorbing material preparation, and solve the problem of low wave absorption performance of existing high-temperature coatings. The method of the present invention comprises: step 1, pre-treating the metal substrate by micro-arc oxidation to pre-form a phosphate coating on the surface of the metal substrate; step 2, mixing and stirring high-temperature ceramic aggregate, phosphate adhesive, curing agent and Co-based high-temperature absorber according to a preset mass fraction to prepare a coating; step 3, applying the coating to the pre-treated surface of the metal substrate, standing and hardening at room temperature, transferring to a high-temperature furnace for heat preservation, and obtaining a high-temperature stealth coating on the surface of the metal substrate after the coating is completely cured. The present invention is suitable for the preparation of high-temperature stealth coatings.

The invention relates to the technical field of high-temperature infrared stealth resin-based composite materials, and particularly discloses a resin-based heat-proof composite material coated with a low-temperature curing high-temperature infrared stealth coating on the surface, which sequentially comprises a resin-based heat-proof composite material and a high-temperature infrared stealth coating from inside to outside, according to the high-temperature infrared stealth coating, nano metal and flaky metal powder serve as low-emissivity filler, and a glass phase and organic resin serve as binding phases. The preparation method of the composite material has the characteristics of low cost and low energy consumption, and the damage to the resin-based heat-proof composite material is reduced. The high-temperature infrared stealth coating on the surface of the composite material has the characteristics of wide temperature range, low emissivity and high combination, so that falling and stripping of the high-temperature infrared stealth coating caused by decomposition of the composite material in a use environment are avoided, and the stealth problem of an aircraft in a wide temperature range is solved.

The invention belongs to the technical field of electromagnetic wave absorbing materials, and discloses a composite coating with electromagnetic protection and explosion-proof functions as well as a preparation method and application of the composite coating. The coating comprises 40 to 60 parts of polycarbodiimide modified diphenylmethane diisocyanate, 40 to 60 parts of a semi-prepolymer which is synthesized from polycarbonate diol with the equivalent weight of 1000 and has the NCO content of 10 to 20 percent, 73 to 100 parts of a polyether amine curing agent, 15 to 20 parts of diethyl toluenediamine or dimethyl thio toluenediamine, 0.5 to 2 parts of calcium carbonate and 3 to 6 parts of magnetic powder. And the two components are quickly reacted and molded through a spraying process. According to the invention, the polyurea elastomer is used as a matrix, so that the coating is endowed with excellent impact resistance, explosion-proof characteristics, water impermeability, oil resistance, low temperature resistance and other environmental tolerance; meanwhile, an adjustable electromagnetic wave absorption function is realized by doping specific magnetic powder. The coating is simple in preparation process and excellent in comprehensive performance, and is particularly suitable for equipment surfaces with high requirements on stealth and survival protection, such as oil storage equipment.

The invention relates to the technical field of stealth material preparation, in particular to a protective coating with a stealth function and a preparation method thereof.The preparation method of the protective coating with the stealth function comprises the steps that 1, matrix resin, a flame retardant, fiber filler, auxiliaries and part of solvent are premixed and dispersed, and a component A is obtained; (2) premixing and dispersing the stealth filler, the curing agent and the residual solvent to obtain a component B; and (3) uniformly mixing the component A and the component B to obtain the protective coating with the stealth function. The prepared protective coating with the stealth function is excellent in performance, and through the multiphase collaborative design of the matrix resin, the stealth filler and the flame retardant, the protective coating has excellent stealth performance and long-acting environmental stability.

The invention discloses a stealth coating material for aviation aircrafts. According to the invention, a three-layer composite structure design is adopted; the intelligent sensing layer is composed of graphene quantum dots and a piezoelectric nanofiber composite network, so that real-time sensing of electromagnetic wave signals is realized; the tunable metamaterial layer comprises a liquid crystal elastomer matrix and nickel-titanium alloy nanowires dispersed in the liquid crystal elastomer matrix, and electromagnetic parameters of the material are dynamically adjusted by applying an electric field or a temperature field; vanadium dioxide nanoparticles, a photonic crystal structure and carbon nanotube aerogel are integrated in the multispectral stealth layer, and radar, infrared and visible light multispectral synergistic stealth is achieved. The coating is further integrated with a microencapsulation repairing agent and an intelligent control system, and has the self-repairing and self-adaptive adjusting functions. Compared with the prior art, 0.1-40 GHz ultra-wide frequency band radar wave absorption is achieved, the radar cross section is reduced by 25-30 dB, the infrared radiation characteristic is reduced by 80% or above, the surface density is only 1.2-1.5 kg / m, the weight is reduced by 65% compared with a traditional coating, and a key material technical support is provided for a new generation of stealth aircrafts.

A method for making a reversible or adaptable camouflage scheme on a vehicle comprises first, second and third steps. The first step is to apply a first, base, coat of paint of a first colour on the m

The invention relates to the technical field of infrared camouflage coatings, in particular to a single-component sea gray water-based camouflage coating and a preparation method thereof. The invention discloses a single-component sea gray water-based camouflage coating and a preparation method thereof, a white pigment of the camouflage coating uses infrared reflection titanium dioxide to replace part of conventional titanium dioxide, so that not only is the color displayed in a visible light region ensured, but also the reflectivity to sunlight in the visible light region and a near-infrared light region is improved; and the thermal radiation energy can be controlled from the temperature, so that the infrared emissivity is reduced. The inorganic pigment paste with different components and concentrations is used for toning, so that the coating can better adapt to the requirement of rich colors in different environments, not only has excellent aesthetic feeling in appearance, but also can meet the requirement of visible light camouflage compatibility visually.

Camouflage coating systems, apparatuses, and methods described herein may include a coating deposited and bonded to a region of an external surface of an object to be camouflaged. The coating may include a plurality of stacked material arrangements deposited and bonded sequentially onto the region of the external surface and arranged to define a laterally distributed plurality of independent camouflage profiles. The coating may be configured to adjust coating emissivity at visual and IR wavelengths and to block or adjust infrared (IR) emitted by the object, thereby concealing the region of the external surface of the object from detection by a detection method in the visual, infrared, and electromagnetic regimes.

The invention discloses a long-acting anti-corrosion zinc-aluminum-magnesium coating and a preparation method thereof, and relates to the technical field of anti-corrosion coatings. The coating is prepared from, by weight, 20-35 parts of zinc-aluminum-magnesium alloy powder (the zinc content is 65-75% by weight, the aluminum content is 15-25% by weight, and the magnesium content is 5-10% by weight), 15-25 parts of polysiloxane resin, 10-18 parts of fluorocarbon modified resin, 8-15 parts of epoxy resin, 12-20 parts of pigment filler, auxiliaries and a solvent, and the preparation method comprises the steps of pretreatment, base material preparation, grinding and dispersing, blending, filtering and packaging. According to the invention, through a synergic anticorrosion mechanism of the zinc-aluminum-magnesium alloy and in combination with a composite system of polysiloxane and fluorocarbon modified resin, multifunctional synergism of long-acting anticorrosion, water resistance, fire resistance, stealth, heat insulation and the like is realized, the anticorrosion service life reaches 15 years or more, the salt spray resistance reaches 3000 hours or more, and the coating is suitable for metal structure protection in the fields of ships, airplanes, high-speed rails, ocean engineering and the like.

This invention discloses a coatable, moldable dual-functional coating material for heat protection and stealth, and its preparation method. The coating material is formed from a SiC-based composite ceramic aerogel slurry, a perovskite / MAX phase composite ceramic absorber, and a high-temperature resistant binder. The composite ceramic aerogel slurry is composed of SiC micro / nano-scale aerogel powder, SiC nanowires, and a high-temperature resistant binder; the perovskite ceramic absorber is lanthanum strontium manganese oxide (La). 1‑x Sr x MnO3), lanthanum strontium iron oxide (La) 1‑ x Sr x FeO3), lanthanum strontium cobalt oxide (La) 1‑x Sr x The MAX phase ceramic absorber is Ti3SiC2, and it contains substances such as CoO3. The technology of this invention enables the rapid application of coating materials to the surface of equipment via brushing, enhancing high-temperature radar absorption stealth and thermal protection capabilities, and facilitating the preparation and efficient repair of high-temperature stealth coatings.

The invention relates to the technical field of special camouflage coatings, in particular to a special camouflage coating and a preparation method thereof. 30-40 parts of a base material; 5-15 parts of a pigment; 0.8-2 parts of a coalescing agent; 0.5-1 part of a dispersant; according to the special camouflage paint and the preparation method thereof, the pigment adopts the pigment base material anatase type white powder to be matched with pigments in other colors for use, anatase type titanium dioxide is low in hardness, easy to grind and small in fineness, and after the anatase type titanium dioxide is used for the paint, the glossiness is high, the brightness is good, and the attractiveness of the camouflage paint is effectively improved; and the mixture is not easy to damage and fall off.

The invention belongs to the field of composite material preparation, and relates to a preparation method of a flexible vegetation-imitating green leaf camouflage material, which comprises the following steps: doping chrome green Cr2O3 particles in a polydimethylsiloxane (PDMS) matrix to form a bottom film with the appearance color similar to that of green vegetation, and then coating a layer of film doped with Au or Ag and other metal nanoparticles on the bottom film to obtain the flexible vegetation-imitating green leaf camouflage material. Therefore, the wave modulation method based on surface plasmon enhanced absorption is realized, the material can imitate the reflectivity of green vegetation in a near-infrared band, PDMS is taken as a matrix and doped with chrome green particles, so that the color of the film is similar to that of a green plant macroscopically, Ag nanorods doped in the upper PDMS coating can enable the chrome green coating to imitate a red edge effect, and the reflectivity of the green vegetation can be simulated in a near-infrared band. Vegetation is simulated in a near-infrared band. The two layers of films are compounded, so that the camouflage material and the vegetation green leaves have the same color and spectrum, and the preparation method and the material have very wide application prospects.

The present disclosure relates to a composition for providing a camouflage coating, the composition including an aqueous polyolefin binder dispersion; a low-emissive pigment; and a matting agent. The matting agent is a thermoplastic polymer matting agent. The disclosure further relates to a method of producing a low-emissive textile product using such a composition, as well as low-emissive textile products and camouflage products produced using the composition.

The invention discloses a lotus leaf carbon-based iron-cobalt composite hollow broadband wave-absorbing material and a preparation method and application thereof.The lotus leaf carbon-based iron-cobalt composite hollow broadband wave-absorbing material is prepared by the steps that lotus leaves serve as a framework material, lotus leaf biochar is prepared after high-temperature treatment, then the lotus leaf biochar reacts with ferric acetylacetonate and cobalt acetylacetonate, and then the CoFe-coated CoFe2O4 / C composite material is prepared after high-temperature treatment. The preparation process is relatively simple to operate, required equipment is common, and reaction conditions are easy to control; raw materials are low in cost, energy consumption is low, and large-scale production and wide application are facilitated; the prepared composite wave-absorbing material has the advantages of being high in absorbing capacity and wide in effective absorbing frequency band, and can be applied to absorption of electromagnetic waves.

An article includes a substrate with a surface, a coating disposed over the surface, and a subtractive colorant which absorbs electromagnetic radiation according to a specified absorption spectrum. The coating includes a binder material and a plurality of porous polymer particles having pores with a distribution of pore sizes adapted to scatter electromagnetic radiation in one or more specified wavelength bands, wherein the porous polymer particles have a shell which is impermeable to a liquid.

The application discloses a polytetrafluoroethylene radar cover film coating with an optical camouflage function and a preparation method. The coating is a single-color or multi-color camouflage film coating coated on a glass fiber plain cloth or a glass fiber plain cloth polymer film. The single-color camouflage film coating is a polytetrafluoroethylene coating containing superfine particle camouflage pigments in multiple layers. The multi-color camouflage film coating is a polytetrafluoroethylene coating containing superfine particle camouflage pigments in multiple layers. The color of the single-color or multi-color camouflage film coating is matched with the environment. The polytetrafluoroethylene radar cover film coating with the optical camouflage function is coated on the glass fiber plain cloth or the glass fiber plain cloth polymer film, and is used for constructing large radar antenna covers and other facilities, so that the optical camouflage protection of the radar cover in the visible light and near-infrared wave bands can be effectively realized.

The application discloses a lotus leaf carbon-based iron-cobalt composite hollow broadband wave-absorbing material and a preparation method and application thereof. The composite material takes lotus leaves as a skeleton material, and lotus leaf biochar is prepared after high-temperature treatment. Then, the lotus leaf biochar is reacted with acetylacetone iron and acetylacetone cobalt, and then high-temperature treatment is carried out to prepare a CoFe@CoFe2O4 / C composite material. The preparation process is relatively simple, common equipment is required, and the reaction condition is easy to control. The raw material cost is low, the energy consumption is low, and the large-scale production and wide application are facilitated. The prepared composite wave-absorbing material has the advantages of strong absorption capacity and wide effective absorption frequency band, and can be applied to the absorption of electromagnetic waves.