CN108699378A - Aqueous wave absorbing coating and its preparation method and application - Google Patents
Aqueous wave absorbing coating and its preparation method and application Download PDFInfo
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- CN108699378A CN108699378A CN201880000332.6A CN201880000332A CN108699378A CN 108699378 A CN108699378 A CN 108699378A CN 201880000332 A CN201880000332 A CN 201880000332A CN 108699378 A CN108699378 A CN 108699378A
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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
- C09D133/00—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 only one carboxyl radical, or of salts, anhydrides, esters, amides, imides, or nitriles thereof; Coating compositions based on derivatives of such polymers
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- 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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- C—CHEMISTRY; METALLURGY
- C09—DYES; PAINTS; POLISHES; NATURAL RESINS; ADHESIVES; COMPOSITIONS NOT OTHERWISE PROVIDED FOR; APPLICATIONS OF MATERIALS NOT OTHERWISE PROVIDED FOR
- C09D—COATING COMPOSITIONS, e.g. PAINTS, VARNISHES OR LACQUERS; FILLING PASTES; CHEMICAL PAINT OR INK REMOVERS; INKS; CORRECTING FLUIDS; WOODSTAINS; PASTES OR SOLIDS FOR COLOURING OR PRINTING; USE OF MATERIALS THEREFOR
- C09D5/00—Coating compositions, e.g. paints, varnishes or lacquers, characterised by their physical nature or the effects produced; Filling pastes
- C09D5/32—Radiation-absorbing paints
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- 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
- C09D7/00—Features of coating compositions, not provided for in group C09D5/00; Processes for incorporating ingredients in coating compositions
- C09D7/20—Diluents or solvents
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- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
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Abstract
Aqueous wave absorbing coating includes following weight percentage components:Water 15%-25%, aqueous dispersion 0.5%-1%, aqueous wetting agent 0.5%-2%, aqueous defoamer 0.1%-0.5%, water-based thickener 0.5%-2%, ferromagnetism inhale wave powder 35%-45%, water-soluble acrylic copolymer 35%-55%, water soluble adhesive 3%-5%, pH adjusting agent 0.1%-1%.Aqueous wave absorbing coating solid content is high, and dispersion is stablized, and the coating adhesion of formation is strong, wear-resisting, and electro-magnetic wave absorption effect is good.The preparation method process conditions of aqueous wave absorbing coating are easily-controllable, can ensure that the aqueous wave absorbing coating performance prepared is stablized.
Description
Technical field
The invention belongs to technical field of coatings, and in particular to a kind of aqueous wave absorbing coating and its preparation method and application.
Background technology
Antiradar coatings are one of military invisible coatings, its use makes beyond-visual-range attack, the fight do not met becomes
Reality so that modern combat pattern is changed, and thus has huge military benefit.In addition, the application on the product for civilian use
Also very extensive, such as the electromagnetic radiation protection of broadcast and TV radiating station, microwave dark room eliminates equipment and communication and navigation system
Electromagnetic interference, security information secrecy, the electromagnetic protection of industrial science and Medical Devices, to some emphasis military engineerings and secrecy work
Antiradar coatings are coated in the outer surface of journey, on the one hand ensure that the safety of these buildings, are in addition played to the radiation of electromagnetic wave
Shielding action.
In antiradar coatings, the rubber-ferrite agent mainly in coating is played the role of inhaling wave, suction wave in the prior art
Agent includes mainly ferrite wave-absorbing material, carbon fiber structural wave-absorbing material, nano wave-absorbing material, chiral absorbing material, polycrystalline iron
Fiber absorbing material and conduction high polymer absorbing material etc..Based on those wave absorbing agents, at present both at home and abroad antiradar coatings mainly have with
Under it is several:
Ferrite antiradar coatings, ferrite are development absorbing materials more mature earliest, mainly there is nickel-zinc ferrite, manganese
Zn ferrite and barium based ferrite etc., wave-absorbing mechanism are magnetic domain natural resonance.Ferrite be divided into spinel-type, carbuncle type and
Magnetoplumbate-type, wherein it is best with the absorbing property of hexaplanar sheet Magnetoplumbate-type, because of hexaplanar sheet magneto-plumbite type sections oxygen
Body has higher magnetic anisotropy equivalent field, and natural resonant frequency is higher, shows excellent high frequency absorbing property.Its
Advantage is that absorption is strong, frequency band is wider, at low cost;The disadvantage is that density is big, hot properties is poor.
Conduction high polymer absorbing material antiradar coatings, this kind of coating is by blending conductive fiber in regular powder absorber
It is made, its advantage is that:Density is small, can MOLECULE DESIGN, structure diversification, can be achieved that infrared and microwave is compatible, easy Compound Machining, can
Greatly to improve the absorbing property of material.But this kind of antiradar coatings have the shortcomings that frequency band is narrow, especially in low frequency
The wave-absorbing effect of wave band is very poor.
Nano wave-absorption coating is by nano-particle for obtaining the coating with certain specific functions in coating.On the one hand
Nano paint can be improved in conventional mechanical property such as adhesive force, shock resistance, flexibility, on the other hand be possible to carry
The ageing-resistant, corrosion-resistant of high coating, radiation resistance.In addition, nano paint is also possible to show certain specific functions, such as from clear
The performances such as clean, antistatic, stealthy suction wave, fire-retardant.
Although occurring some different types of antiradar coatings at present, mainly have existing for existing antiradar coatings with
Under several need improved deficiencies:1. absorptivity is low, 2. frequency bands are narrow, and 3. coating layer thicknesses are big, caused weight per square meter 3~
5 kilograms or more not only long construction periods, and because applying thickness, easy cracking falls off, and coating flexibility is inadequate.It is serious that these are insufficient
Constrain the application range of current antiradar coatings.
Invention content
It is an object of the invention to overcome the above-mentioned deficiency of the prior art, a kind of aqueous wave absorbing coating and its preparation side are provided
Method, with solve that existing antiradar coatings absorptivity is low, frequency band is narrow and coating layer thickness it is big caused by the technical problems such as fall off easy to crack.
In order to achieve the above-mentioned object of the invention, an aspect of of the present present invention provides a kind of aqueous wave absorbing coating.The aqueous suction
Wave coating includes following weight percentage components:
Another aspect of the present invention provides a kind of preparation method of aqueous wave absorbing coating.The aqueous wave absorbing coating packet
Include following steps:
Each component is weighed according to the ratio of component and the component contained by aqueous wave absorbing coating of the present invention;
Each component weighed is subjected to mixing treatment.
Another aspect of the invention provides the application process of aqueous wave absorbing coating of the present invention.The aqueous wave absorbing coating
Application in preparing any one of plastics, resin, glass, ceramics, wooden, leather material workpiece.
Compared with prior art, aqueous wave absorbing coating of the present invention passes through contained water-soluble acrylic copolymer and water solubility
Bonding agent constitutes film-forming base system so that the aqueous wave absorbing coating paint film is plentiful, wear-resisting, has water-tolerant, resistance toization
The property learned is good, and rate of drying is fast, easy to use, and assigns coating excellent flexibility, ensure that the stability of coating, and apply
Layer electro-magnetic wave absorption effect is good.The ferromagnetism inhale wave powder wave absorbing agent such as described dispersant, the wetting agent and thickener with
And the synergistic effect of the components such as pH adjusting agent, it can be evenly dispersed in the aqueous wave absorbing coating, and the dispersion formed is steady
Fixed, solid content is high.In addition, using water as bulk solvent, safety and environmental protection.
The preparation method of aqueous wave absorbing coating of the present invention passes through its preparing process so that each component is uniformly dispersed, to be formed
Stable dispersion.In addition, preparation method process conditions are easily-controllable, it can ensure that the aqueous wave absorbing coating performance prepared is steady
It is fixed, and its production cost is effectively reduced, it is suitable for industrialized production.
Specific implementation mode
In order to make technical problems, technical solutions and advantageous effects to be solved by the present invention be more clearly understood, below in conjunction with
Embodiment, the present invention will be described in further detail.It should be appreciated that specific embodiment described herein is only used to explain
The present invention is not intended to limit the present invention.
The weight of each component noted in the disclosure of the embodiment of the present invention not only may refer to the specific of each component and contain
Amount, can also indicate the proportionate relationship of weight between each component, therefore, as long as according to specification each component of the embodiment of the present invention
Content is scaled up or is reduced within specification of embodiment of the present invention scope of disclosure.Specifically, the embodiment of the present invention
Weight described in the specification can be unit of weight well known to the chemical fields such as μ g, mg, g, kg.
On the one hand, the embodiment of the present invention provides a kind of aqueous wave absorbing coating.The aqueous wave absorbing coating includes following weight
The component of percentage:
Wherein, the aqueous wave absorbing coating is employed as bulk solvent, and nontoxic non-stimulated smell is harmless, not dirty
Contaminate environment.
The water-soluble acrylic copolymer and water soluble adhesive constitute film-forming base system so that the aqueous suction
Wave coating paint film is plentiful, wear-resisting, has water-tolerant, and chemical resistance is good, and rate of drying is fast, easy to use, and assigns coating
Excellent flexibility ensure that the stability of coating, and coating electro-magnetic wave absorption effect is good.
In one embodiment, the water-soluble acrylic copolymer include aqueous polyurethane and acrylic acid copolymer dispersion,
One or both of anion aqueous polyurethane, aqueous polyurethane dispersion mixture.Wherein, the aqueous polyurethane and third
Olefin(e) acid be copolymerized dispersion can with but not only select LAMBERTI (Ning Baidi) aqueous polyurethane.Anion aqueous polyurethane can be with
But not only select ALLNEX (profound new) anion aqueous polyurethane.The aqueous polyurethane dispersion can with but not only select
ARKEMA (A Kema) aqueous polyurethane dispersion.Those water-soluble acrylic copolymers can act synergistically with polyvinyl alcohol,
Assigning the coating formed has excellent water resistance, and paint film toughness is good, and adhesive force is good.In a particular embodiment, the water solubility
The weight percentage of acrylic copolymer can be 35%, 38%, 40%, 42%, 44%, 45%, 48%, 50%, 52%,
54%, 55% etc..
In one embodiment, the water soluble adhesive includes polyvinyl alcohol.Wherein, the polyvinyl alcohol can with but not only
The various models such as Kuraray PVA, Taiwan Changchun polyvinyl alcohol are selected to choose one such model.Wherein, Japan is laughable
Beautiful PVA can be PVA217, and Taiwan Changchun polyvinyl alcohol can be BP-05, BP-17 etc..Wherein, the polyvinyl alcohol can be adopted
15% water-soluble poval contained admittedly is boiled with traditional water bath mode.Selected water soluble adhesive can with it is described water-soluble
Property acrylic copolymer synergistic effect, assign formation coating have water-fast, chemically-resistant, improve flexibility the effects that.Specific
In embodiment, the weight percentage of the water soluble adhesive can be 3%, 3.3%, 3.5%, 3.8%, 4%, 4.3%,
4.5%, 4.8%, 5% etc..
The ferromagnetism inhales wave powder wave absorbing agent in such as described dispersant, the wetting agent and thickener and pH adjusting agent etc.
The synergistic effect of component can be evenly dispersed in the aqueous wave absorbing coating and corresponding film-forming base system each component, and shape
At dispersion stablize.
Wherein, in an embodiment, the aqueous dispersion include in the modest W-19 of moral, Tao Shi X-100, BYK-110 at least
It is a kind of.Those aqueous dispersions under the assistance of other auxiliary agents, by the ferromagnetism inhale wave powder wave absorbing agent particles of inorganic material and
Part organic component progress is evenly dispersed, while preventing the sedimentation and cohesion of solid particle, forms stable dispersion.Having
In body embodiment, the weight percentage of the aqueous dispersion can be 0.5%, 0.6%, 0.7%, 0.8%, 0.9%,
1% etc..
In one embodiment, the aqueous wetting agent includes in BYK-3400, the high TEGO270 of enlightening, Guangzhou hat will OS-1400
It is at least one.Those aqueous wetting agents being capable of quick humidification each component, the especially described ferromagnetism suction wave powder and film-forming base body
It is each component, reduces each component surface tension and promote levelling and contribute to anti-shrinkage cavity.In a particular embodiment, the aqueous wetting
The weight percentage of agent can be 0.5%, 0.7%, 0.8%, 1%, 1.2%, 1.5%, 1.7%, 1.9%, 2% etc..
In one embodiment, the water-based thickener includes Guangzhou A Meisi AMS-201, ROHM AND HAAS ASE-60, Tao Shi TT-
At least one of 935.Those water-based thickeners can act on water component, adjust the sticky performance of solvent, and described in imparting
There is aqueous wave absorbing coating excellent mobility, levelability to effectively improve the shear viscosity of the aqueous wave absorbing coating.Specific
In embodiment, the weight percentage of the water-based thickener can be 0.5%, 0.7%, 0.8%, 1%, 1.2%, 1.5%,
1.7%, 1.9%, 2% etc..
The ferromagnetism inhales wave powder and constitutes wave absorbing agent, and in an embodiment, it includes Ni Zn ferrimagnet that the ferromagnetism, which inhales wave powder,
At least one of body powder, manganese-zinc ferrite powder, iron aluminum silicon powder, Tie Nie Molybdenum powder, iron silicochromium powder, carbonyl iron dust.In addition, the iron
The grain size that magnetism inhales wave powder be can be grain size that ferromagnetism commonly used in the art inhales wave powder, such as 150 μm or less.Those wave absorbing agents have
There is the features such as high magnetic permeability, high saturated magnetic induction, high resistance, low-loss, and can be evenly dispersed.In further embodiment
In, it is that the ferromagnetism by coupling agent surface modification treatment inhales wave powder, the preferably described coupling agent that the ferromagnetism, which inhales wave powder,
It coats the ferromagnetism and inhales wave powder.In a particular embodiment, the coupling agent include silane coupling agent, silane coupling agent,
At least one of titante coupling agent, aluminate coupling agent, zirconate coupling agent.The Chinese Academy of Sciences can specifically be selected
KH-450, the coupling agent for winning the models such as wound Degussa UN3267,1151,2629.Changed by inhaling wave powder surface to the ferromagnetism
Property, on the one hand enhancing the ferromagnetism inhales wave powder in the dispersing uniformity of the aqueous wave absorbing coating, while enhancing described
Ferromagnetism inhales the bond strength between wave powder and film-forming base system.In a particular embodiment, the ferromagnetism inhales wave powder or table
The weight percentage that the ferromagnetism of the face after coupling agent modified inhales wave powder can be 35%, 36%, 37%, 38%,
39%, 40%, 41%, 42%, 43%, 44%, 45% etc..
In one embodiment, the pH adjusting agent is one or both of ammonium hydroxide, methylol amine polymer mixture.It should
A little pH adjusting agents are capable of the acid-base value of active solvent system, as the carboxylic acid group in neutralization system makes corresponding component preferably realize
Water solubility improves the stability of the aqueous wave absorbing coating dispersion, improves storage stability and application property.It is being embodied
In example, the weight percentage of the pH adjusting agent can be 0.1%, 0.2%, 0.3%, 0.4%, 0.5%, 0.6%,
0.7%, 0.8%, 0.9%, 1% etc..
Have during the antifoaming agent can prepare the aqueous wave absorbing coating, transports and store or in the construction process
There are suds, the effect of defoaming to improve the stability of the aqueous wave absorbing coating, improves coating quality.Such as in one embodiment, institute
It includes that BASF A38, enlightening be high 810, at least one of Clariant 544X to state aqueous defoamer.In a particular embodiment, described
The weight percentage of antifoaming agent can be 0.1%, 0.2%, 0.3%, 0.4%, 0.5% etc..
Therefore, the aqueous wave absorbing coating is acted synergistically by contained each component, and it is evenly dispersed and stable to constitute one
Dispersion, solid content is high, while assigning the coating that the aqueous wave absorbing coating is formed has paint film plentiful, wear-resisting, has
Water-tolerant, chemical resistance is good, and rate of drying is fast, easy to use, and assigns coating excellent flexibility, ensure that coating
Stability, and coating electro-magnetic wave absorption effect is good, and the coating that such as aqueous wave absorbing coating is formed is in 0.2-18GHZ frequency range models
It encloses interior absorption peak and reaches -26dbB.
Correspondingly, the embodiment of the present invention additionally provides a kind of preparation method of above-mentioned aqueous wave absorbing coating.The aqueous suction
The preparation method of wave coating includes the following steps:
Step S01:The ratio of component and the component contained by aqueous wave absorbing coating as described above weighs each component;
Step S02:The each component weighed in step S01 is subjected to mixing treatment.
Specifically, each component preferred content of aqueous wave absorbing coating and type are as described above in above-mentioned steps S01, in order to
Length is saved, details are not described herein.Wherein, when the nickel-zinc ferrite magnetic powder weighed is the iron by coupling agent surface modification treatment
Magnetism inhales wave powder, when the preferably described coupling agent coats the ferromagnetism suction wave powder.The coupling agent surface modification treatment
It is to be prepared as follows acquisition that ferromagnetism, which inhales wave powder,:
First the ferromagnetism weighed suction wave powder is added into the aqueous solution of coupling agent and carries out mixed processing and is 85 DEG C -95
DEG C, it is specific such as heat treatment at 95 DEG C until moisture is evaporated, obtain coupling agent modified ferromagnetism and inhale wave powder.
Wherein, it is 0.1%-5 ‰ that the coupling agent inhales wave powder mixing quality ratio with the ferromagnetism, i.e. 1KG ferromagnetism is inhaled
5-10 grams of aqueous silane coupling agent is added in wave powder.The coupling agent it is as described above may include silane coupling agent, epoxy
At least one of class coupling agent, vinyl-based coupling agent, aqueous silane class coupling agent.
Mixing treatment in above-mentioned rapid S02 can select conventional mode to be handled, and such as stir, the side such as supersound process
Formula so that each component is uniformly dispersed.
In one embodiment, the mixing treatment in the step S02 is first to be added to the water water-soluble acrylic copolymer
Mixing treatment, then successively pH adjusting agent, water soluble adhesive, inhale wave powder, various auxiliary agents (aqueous dispersion, aqueous wetting agent,
Aqueous defoamer, water-based thickener) carry out mixing treatment.Wherein, during each mixing treatment, mixing treatment can be conventional
Mixing treatment, such as stirring, ultrasound, as long as enable to each component be uniformly mixed, in range disclosed by the invention.When
When being handled using stir mixing, the stir mixing processing is using middling speed 1000r/min stirrings.Batch mixing is carried out according to the sequence
Processing enables to each component ingredient to disperse and dissolve, to form stable dispersed paste system.
Further include the subsequent treatment process of coating after waiting for the step S02 mixing treatments, such as to mixing treatment after
Slurry is filtered and reconciles defoaming and packing processes etc..Wherein, filtering can be 200 mesh filter screen mistakes after stirring evenly
Filter.
Therefore, the preparation method of the aqueous wave absorbing coating passes through its preparing process so that each component is uniformly dispersed, with shape
At stable dispersion.In addition, preparation method process conditions are easily-controllable, it can ensure that the aqueous wave absorbing coating performance prepared is steady
It is fixed, and its production cost is effectively reduced, it is suitable for industrialized production.
It is dispersion that is evenly dispersed and stablizing just because of aqueous wave absorbing coating described above, while described in imparting
The coating that aqueous wave absorbing coating is formed has paint film plentiful, wear-resisting, has water-tolerant, chemical resistance is good, and rate of drying is fast, makes
It with convenient, and assigns coating excellent flexibility, ensure that the stability of coating, and coating electro-magnetic wave absorption effect is good,
To effectively extend the application field of the aqueous wave absorbing coating.As in one embodiment, the aqueous wave absorbing coating can be
Prepare the application in any one of plastics, resin, glass, ceramics, wooden, leather material workpiece.Particularly applied
At the position that the workpiece is electromagnetically shielded.Therefore, the workpiece includes for military radar, stealth aircraft, intelligence
Number, kitchen appliance product, wireless network card shell, mobile base station babinet, Medical Instruments,Any one of,.It specifically can be by institute
It states aqueous wave absorbing coating and is coated in such as notebook computer casing, tablet computer shell, handset shell, tv shell, wireless network
On the inner surfaces such as casing clamping body, mobile base station babinet or outer surface, to improve associated workpiece to electro-magnetic wave absorption effect.
Now by taking aqueous wave absorbing coating and preparation method as an example, the present invention will be described in further detail.
Embodiment 1
The present embodiment provides a kind of aqueous wave absorbing coatings and preparation method thereof comprising the component of following parts by weight:
Water 14.7%, organic silicon modified by polyether wetting agent 0.2%, sodium acrylate dipersant 0.5%, waterborne organic silicon disappear
Infusion 0.3%, hydrophobically modified acrylic acid association thickener 3%, soluble polyurethane dispersion 36%, polyvinyl alcohol water solution
3%, ammonium hydroxide 0.3%, nickel-zinc ferrite magnetic powder 42%.
The present embodiment aqueous wave absorbing coating preparation method, includes the following steps:
S11. it weighs:By weighing organic silicon modified by polyether wetting agent, sodium acrylate dipersant, aqueous in the present embodiment 1
Organic silicon defoamer, hydrophobically modified acrylic acid association thickener, soluble polyurethane dispersion, polyvinyl alcohol water solution, ammonia
The components such as water, nickel-zinc ferrite magnetic powder;
S12. slurry is prepared:Under at the uniform velocity stirring condition, successively by organic silicon modified by polyether wetting agent, sodium acrylate salinity
Powder, waterborne organic silicon antifoaming agent, hydrophobically modified acrylic acid association thickener, soluble polyurethane dispersion, polyvinyl alcohol
Mixing treatment is carried out in aqueous solution, ammonium hydroxide, nickel-zinc ferrite magnetic powder input water.
Embodiment 2
The present embodiment provides a kind of aqueous wave absorbing coatings and preparation method thereof comprising the component of following parts by weight:
Water 18%, organic silicon modified by polyether wetting agent 0.2%, sodium acrylate dipersant 0.5%, waterborne organic silicon defoaming
Agent 0.3%, hydrophobically modified acrylic acid association thickener 3%, soluble polyurethane dispersion 32%, polyvinyl alcohol water solution
2.5%, ammonium hydroxide 0.3%, nickel-zinc ferrite magnetic powder 43.2%.
The present embodiment aqueous wave absorbing coating preparation method, includes the following steps:
S11. it weighs:By weighing organic silicon modified by polyether wetting agent, sodium acrylate dipersant, aqueous in the present embodiment 2
Organic silicon defoamer, hydrophobically modified acrylic acid association thickener, soluble polyurethane dispersion, polyvinyl alcohol water solution, ammonia
The components such as water, nickel-zinc ferrite magnetic powder;
S12. slurry is prepared:Under at the uniform velocity stirring condition, successively by organic silicon modified by polyether wetting agent, sodium acrylate salinity
Powder, waterborne organic silicon antifoaming agent, hydrophobically modified acrylic acid association thickener, soluble polyurethane dispersion, polyvinyl alcohol
Mixing treatment is carried out in aqueous solution, ammonium hydroxide, nickel-zinc ferrite magnetic powder input water.
Embodiment 3
The present embodiment provides a kind of aqueous wave absorbing coatings and preparation method thereof comprising the component of following parts by weight:
Water 16%, organic silicon modified by polyether wetting agent 0.2%, sodium acrylate dipersant 0.5%, waterborne organic silicon defoaming
Agent 0.3%, hydrophobically modified acrylic acid association thickener 3%, soluble polyurethane dispersion 30%, polyvinyl alcohol water solution
2.5%, ammonium hydroxide 0.3%, nickel-zinc ferrite magnetic powder 47.2%.
The present embodiment aqueous wave absorbing coating preparation method, includes the following steps:
S11. it weighs:By weighing organic silicon modified by polyether wetting agent, sodium acrylate dipersant, aqueous in the present embodiment 3
Organic silicon defoamer, hydrophobically modified acrylic acid association thickener, soluble polyurethane dispersion, polyvinyl alcohol water solution, ammonia
The components such as water, nickel-zinc ferrite magnetic powder;
S12. slurry is prepared:Under at the uniform velocity stirring condition, successively by organic silicon modified by polyether wetting agent, sodium acrylate salinity
Powder, waterborne organic silicon antifoaming agent, hydrophobically modified acrylic acid association thickener, soluble polyurethane dispersion, polyvinyl alcohol
Mixing treatment is carried out in aqueous solution, ammonium hydroxide, nickel-zinc ferrite magnetic powder input water.
Embodiment 4
The present embodiment provides a kind of aqueous wave absorbing coatings and preparation method thereof comprising the component of following parts by weight:
Water 17%, organic silicon modified by polyether wetting agent 0.3%, sodium acrylate dipersant 0.6%, waterborne organic silicon defoaming
Agent 0.05%, hydrophobically modified acrylic acid association thickener 4.5%, soluble polyurethane dispersion 32%, polyvinyl alcohol are water-soluble
Liquid 2.0%, ammonium hydroxide 0.2%, nickel-zinc ferrite magnetic powder 43.35%.
Comparative example 1
The present embodiment provides a kind of aqueous electromagnetic shielding coatings comprising the component of following parts by weight:
Water 17.7%, organic silicon modified by polyether wetting agent 0.2%, sodium acrylate dipersant 0.5%, waterborne organic silicon disappear
Infusion 0.3%, hydrophobically modified acrylic acid association thickener 3%, soluble polyurethane dispersion 36%, ammonium hydroxide 0.3%, nickel zinc
Ferromagnetic oxide powder 42%.
Comparative example 2
The present embodiment provides a kind of aqueous electromagnetic shielding coatings comprising the component of following parts by weight:
Water 20.7%, organic silicon modified by polyether wetting agent 0.2%, sodium acrylate dipersant 0.5%, waterborne organic silicon disappear
Infusion 0.3%, soluble polyurethane dispersion 36%, ammonium hydroxide 0.3%, nickel-zinc ferrite magnetic powder 42%.
Coating forms the correlated performance test of coating
The aqueous wave absorbing coating that Examples 1 to 4 provides and the coating that comparative example provides are formed after coating in 65 DEG C of processes
Correlated performance in test such as the following table 1 after 20 points of bakings, test result is as follows shown in table 1.
Table 1
The coating that the aqueous wave absorbing coating that the various embodiments described above and comparative example are provided is formed is carried out in electro-magnetic wave absorption reality
It tests the maximum absorption band in 0.2-18GHZ band limits and reaches -26dbB, remaining frequency range is more than -10GHZ, can in conjunction with table 1
Know, the coating adhesion of aqueous wave absorbing coating of the embodiment of the present invention is strong, and hardness is high, electro-magnetic wave absorption effect.In addition, also illustrating
The aqueous wave absorbing coating dispersion is uniform.
The foregoing is merely illustrative of the preferred embodiments of the present invention, is not intended to limit the invention, all essences in the present invention
All any modification, equivalent and improvement etc., should all be included in the protection scope of the present invention made by within refreshing and principle.
Claims (18)
1. a kind of aqueous wave absorbing coating, including following weight percentage components:
2. aqueous wave absorbing coating according to claim 1, it is characterised in that:The aqueous dispersion include the modest W-19 of moral,
At least one of Tao Shi X-100, BYK-110.
3. aqueous wave absorbing coating according to claim 1, it is characterised in that:The aqueous wetting agent include BYK-3400,
At least one of the high TEGO270 of enlightening, Guangzhou hat will OS-1400.
4. aqueous wave absorbing coating according to claim 1, it is characterised in that:The aqueous defoamer include BASF A38,
Enlightening is high 810, at least one of Clariant 544X.
5. aqueous wave absorbing coating according to claim 1, it is characterised in that:The water-based thickener includes Guangzhou A Meisi
At least one of AMS-201, ROHM AND HAAS ASE-60, Tao Shi TT-935.
6. aqueous wave absorbing coating according to claim 1, it is characterised in that:It includes Ni Zn ferrimagnet that the ferromagnetism, which inhales wave powder,
At least one of body powder, manganese-zinc ferrite powder, iron aluminum silicon powder, Tie Nie Molybdenum powder, iron silicochromium powder, carbonyl iron dust.
7. aqueous wave absorbing coating according to claim 1 or 6, it is characterised in that:It is by even that the ferromagnetism, which inhales wave powder,
The ferromagnetism for joining agent surface modification treatment inhales wave powder.
8. aqueous wave absorbing coating according to claim 7, it is characterised in that:The coupling agent include silane coupling agent,
At least one of titante coupling agent, aluminate coupling agent, zirconate coupling agent.
9. aqueous wave absorbing coating according to claim 1, it is characterised in that:The water-soluble acrylic copolymer includes water
Property one or both of polyurethane and acrylic acid copolymer dispersion, anion aqueous polyurethane, aqueous polyurethane dispersion it is mixed
Close object;And/or
The water soluble adhesive includes polyvinyl alcohol.
10. aqueous wave absorbing coating according to claim 1, it is characterised in that:The pH adjusting agent is ammonium hydroxide, methyl hydramine
One or both of Type of Collective object mixture.
11. according to any aqueous wave absorbing coating of claim 1-6,8-10, it is characterised in that:The aqueous wave absorbing coating
Including following weight percentage components:
12. according to any aqueous wave absorbing coating of claim 1-6,8-10, it is characterised in that:The aqueous wave absorbing coating
Including following weight percentage components:
13. according to any aqueous wave absorbing coating of claim 1-6,8-10, it is characterised in that:The aqueous wave absorbing coating
Including following weight percentage components:
14. according to any aqueous wave absorbing coating of claim 1-6,8-10, it is characterised in that:The aqueous wave absorbing coating
The coating of formation absorption peak in 0.2-18GHZ band limits reaches -26dbB.
15. a kind of preparation method of aqueous wave absorbing coating, which is characterized in that include the following steps:
Each component is weighed according to the ratio of component and the component contained by any aqueous wave absorbing coatings of claim 1-14;
Each component weighed is subjected to mixing treatment.
16. the application of aqueous wave absorbing coating according to claim 15, it is characterised in that:The mixing treatment method is such as
Under:
First the ferromagnetism weighed suction wave powder is added into the aqueous solution of coupling agent and carries out mixed processing and is at 85 DEG C -95 DEG C
Heat treatment is evaporated up to moisture, is obtained coupling agent modified ferromagnetism and is inhaled wave powder;
The coupling agent modified ferromagnetism is inhaled into wave powder and the other components weighed carry out mixing treatment.
17. according to any aqueous wave absorbing coatings of claim 1-14 prepare plastics, resin, glass, ceramics, it is wooden,
Application in any one of leather, metal, cloth material workpiece.
18. the application of aqueous wave absorbing coating according to claim 17, it is characterised in that:The workpiece includes for military
In radar, stealth aircraft, intelligent digital, kitchen appliance product, wireless network card shell, mobile base station babinet, Medical Instruments, shielding cloth
It is any.
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| PCT/CN2018/084421 WO2019205011A1 (en) | 2018-04-25 | 2018-04-25 | Aqueous wave-absorbing coating material, preparation method therefor, and use thereof |
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| WO (1) | WO2019205011A1 (en) |
Cited By (8)
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| CN110951342A (en) * | 2019-11-27 | 2020-04-03 | 上海凯虹特种材料科技有限公司 | Radar wave-absorbing coating and preparation process thereof |
| CN111057457A (en) * | 2019-12-31 | 2020-04-24 | 江门江益磁材有限公司 | Water-resistant and environment-friendly water-based wave absorbing plate and preparation method thereof |
| CN111073265A (en) * | 2019-12-31 | 2020-04-28 | 江苏金羿先磁新材料科技有限公司 | Environment-friendly wave-absorbing material and preparation method thereof |
| CN111234777A (en) * | 2020-03-02 | 2020-06-05 | 深圳市四发实业有限公司 | Wave-absorbing powder, wave-absorbing material, preparation method and application thereof |
| CN111270529A (en) * | 2018-12-05 | 2020-06-12 | 洛阳尖端技术研究院 | Light high-elasticity wave-absorbing material and preparation method thereof |
| CN114316697A (en) * | 2022-01-25 | 2022-04-12 | 东莞天卫电磁技术有限公司 | Water-soluble wave-absorbing slurry, wave-absorbing film and preparation method thereof |
| CN116716044A (en) * | 2023-05-16 | 2023-09-08 | 驭奇材料科技常州有限公司 | Anti-electromagnetic interference nano composite wave-absorbing coating, preparation method thereof and ball milling device thereof |
| CN117363072A (en) * | 2023-10-10 | 2024-01-09 | 佛山罗斯夫科技有限公司 | Frosted surface water-based multicolor emulsion polymerization composition and preparation method thereof |
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| CN116716044A (en) * | 2023-05-16 | 2023-09-08 | 驭奇材料科技常州有限公司 | Anti-electromagnetic interference nano composite wave-absorbing coating, preparation method thereof and ball milling device thereof |
| CN117363072A (en) * | 2023-10-10 | 2024-01-09 | 佛山罗斯夫科技有限公司 | Frosted surface water-based multicolor emulsion polymerization composition and preparation method thereof |
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| WO2019205011A1 (en) | 2019-10-31 |
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