CN104910761A - Electromagnetic wave absorbing coating and preparation method thereof - Google Patents
Electromagnetic wave absorbing coating and preparation method thereof Download PDFInfo
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- CN104910761A CN104910761A CN201510307526.9A CN201510307526A CN104910761A CN 104910761 A CN104910761 A CN 104910761A CN 201510307526 A CN201510307526 A CN 201510307526A CN 104910761 A CN104910761 A CN 104910761A
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Abstract
The invention provides an electromagnetic wave absorbing coating and a preparation method thereof. The coating comprises amino resin, a levelling agent, distilled water, waterborne epoxy acrylate resin, a dispersing agent, a defoaming agent, aluminum powder, ultrafine talcum powder, precipitated barium sulfate, zinc phosphate and an antirust agent; moreover, due to addition of a spirulina chiralmicrowave absorbing agent, the coating is endowed with an electromagnetic wave absorbing effect. By reasonably designing the components and contents of the components, the coating film can reach 100mu m or above, the waterproofness is higher than 240h, salt mist resistance is higher than 200h, and the electromagnetic parameter test proves that the dielectric constant is changed slightly, magnetic conductivity is changed fiercely, and magnetic loss is increased obviously. The electromagnetic wave absorbing coating has strong adhesion to an iron base material, is friendly to the environment, has excellent anti-rust andanti-electromagnetic-wave characteristics, can be brushed on the surfaces of steel pylons to absorb electromagnetic waves, and has a wide application prospect in the fields of power transmission iron electric devices and the like.
Description
Technical field
The present invention relates to technical field of coatings, be specifically related to a kind of electromagnetic-absorbing coating and preparation method thereof.
Background technology
Hertzian wave is extensively present in occurring in nature, along with the development of the technology such as human society microwave, communication, electric power, ground hertzian wave increases considerably, and excessive hertzian wave not only disturbs the normal work of electrical appliance, potentially dangerous human health, therefore should be taken precautions against simultaneously.Transmission line on electric power pylon and appliance due to load comparatively large, therefore can produce very strong hertzian wave, the orthobiosis of annex resident in this serious threat.
In view of bulkiness and the specific environment of power transmission facility, prior art mainly relies on material and coating to realize to its shielding electromagnetic waves, especially coating, due to have more complete bond area, without the need to mechanical properties requirement and also do not relate to the technological improvement of transmission facility itself, therefore by coating, transmission facility especially electric power pylon emitting electromagnetic wave absorbed, alleviate and be most widely used in the prior art.
But the electromagnetic-absorbing coating of prior art is first not ideal enough in wave-absorbing effect, and the conformability of coating self and irony base material has to be hoisted, and this just includes the bonding force, quality of forming film, solidification rate etc. of coating and irony base material; In addition the antiradar coatings of prior art also urgently improves in the feature of environmental protection, rust protection etc., and this has had a strong impact on result of use and use range.
Summary of the invention
The present invention is intended to the technological deficiency for prior art, provides a kind of electromagnetic-absorbing coating and preparation method thereof, to solve the technical problem that in prior art, electromagnetic-absorbing coating absorption of electromagnetic wave effect is poor.
Another technical problem that the present invention solves promotes coating to the absorption of electromagnetic wave effect of irony electromagnetic radiation matrix.
The another technical problem that the present invention solves is the bonding force promoting coating and irony base material.
The another technical problem that the present invention solves is the salt spray resistance promoting coating.
The another technical problem that the present invention solves is the rustless property promoting coating.
The another technical problem that the present invention solves promotes the quality of forming film of coating on irony base material.
The another technical problem that the present invention solves is to provide the composition that ripple effect inhaled by imparting coating used in above-mentioned coating.
The another technical problem that the present invention solves is the wave-absorbing effect promoting this composition further.
The another technical problem that the present invention solves is to provide the preparation method of above-mentioned coating.
The another technical problem that the present invention solves improves second component disperses poor effect in this preparation method.
For realizing above technical purpose, the present invention by the following technical solutions:
A kind of electromagnetic-absorbing coating, be made up of in the ratio of 1:2 (w/w) first, second two kinds of components, wherein first component comprises the composition of following mass parts: 5 ~ 10 parts, aminoresin, flow agent 0.5 ~ 1 part, distilled water 10 ~ 15 parts, spirulina chirality wave absorbing agent 10 ~ 20 parts; Second component comprises the composition of following mass parts: water-based epoxy acrylic resin 15 ~ 25 parts, dispersion agent 0.5 ~ 1 part, defoamer 0.2 ~ 0.8 part, distilled water 20 ~ 25 parts, aluminium powder 5 ~ 10 parts, superfine talcum powder 5 ~ 10 parts, process white 5 ~ 10 parts, zinc phosphate 5 ~ 10 parts, rust-preventive agent 1 ~ 2 part.
Preferably, this coating is made up of in the ratio of 1:2 (w/w) first, second two kinds of components, and wherein first component is grouped into by the one-tenth of following mass parts: 5 parts, aminoresin, flow agent 1 part, distilled water 15 parts, spirulina chirality wave absorbing agent 10 ~ 20 parts; Second component is grouped into by the one-tenth of following mass parts: water-based epoxy acrylic resin 15 parts, dispersion agent 1 part, defoamer 0.8 part, distilled water 25 parts, aluminium powder 10 parts, superfine talcum powder 10 parts, process white 10 parts, zinc phosphate 10 parts, rust-preventive agent 2 parts.
Preferred on above two any one of technical scheme bases, described flow agent is ethylene glycol monobutyl ether.
Preferred on above two any one of technical scheme bases, described dispersion agent is the model that German Bi Ke company produces is the dispersion agent of BYK190.
Preferred on above two any one of technical scheme bases, described defoamer is the model that German Bi Ke company produces is the defoamer of BYK022.
Preferred on above two any one of technical scheme bases, described spirulina chirality wave absorbing agent is prepared by following methods:
1) get the glutaraldehyde solution that fresh spirulina and concentration are 2 ~ 3% (w/w) to mix, the weight in wet base of described fresh spirulina and the weight ratio of described glutaraldehyde solution are 1:(18 ~ 22), then under 0 ~ 8 DEG C of condition, fix 2 ~ 6h, solid-liquid separation collects frond again, dry;
2) with 4 ~ 6 weight part steps 1) dried frond and 12 ~ 18 weight part NiCl
26H
2both O are solute, prepare solution, namely obtain the first solution; With the KBH of 0.4 ~ 0.6 weight part
4be solute with both KOH of 0.04 ~ 0.08 weight part, prepare solution, namely obtain the second solution; Above-mentioned second solution is dropped in the first solution, fully gets solid phase washing, drying after reaction;
3) step 2 is got) product is incubated 50 ~ 70min under 420 ~ 480 DEG C of conditions, and namely cooling obtains described spirulina chirality wave absorbing agent.
Further preferred on this basis, step 1) described in fresh spirulina be filter by spirulina medium the frond obtained.
Further preferred on this basis, step 1) described in drying carry out under 35 ~ 40 DEG C of conditions, more optimizedly 37 DEG C.
Further preferred on this basis, step 2) described in dropping be drip under the first solution is in agitation condition.
Further preferred on this basis, step 3) described in insulation perform in tube furnace.
Further preferred on this basis, step 1) described in solid-liquid separation be centrifugal; Preferred further, centrifugal rotational speed is 800 ~ 1200r/min, more optimizedly 1000r/min.
Present invention also offers a kind of preparation method of above-mentioned electromagnetic-absorbing coating, comprise the following steps:
1) preparation of spirulina chirality wave absorbing agent: get the glutaraldehyde solution that fresh spirulina and concentration are 2 ~ 3% (w/w) and mix, the weight in wet base of described fresh spirulina and the weight ratio of described glutaraldehyde solution are 1:(18 ~ 22), then under 0 ~ 8 DEG C of condition, fix 2 ~ 6h, solid-liquid separation collects frond again, dry; With the dried frond of 4 ~ 6 weight part and 12 ~ 18 weight part NiCl
26H
2both O are solute, prepare solution, namely obtain the first solution; With the KBH of 0.4 ~ 0.6 weight part
4be solute with both KOH of 0.04 ~ 0.08 weight part, prepare solution, namely obtain the second solution; Above-mentioned second solution is dropped in the first solution, fully gets solid phase washing, drying after reaction; Then desciccate is incubated 50 ~ 70min under 420 ~ 480 DEG C of conditions, namely cooling obtains described spirulina chirality wave absorbing agent;
2) get the aminoresin of formula ratio and flow agent mixing, under 250 ~ 350r/min agitation condition, add distilled water and step 1 wherein) the spirulina chirality wave absorbing agent that obtains, dispersion 25 ~ 35min, obtains first component;
3) by formula ratio by water-based epoxy acrylic resin, dispersion agent, defoamer, distilled water Homogeneous phase mixing, under the agitation condition of 800 ~ 1200r/min, add aluminium powder, superfine talcum powder, process white, zinc phosphate, rust-preventive agent, then dispersion is until fineness is less than 20 μm, obtains second component.
Preferred on this kind of preparation method basis of above-mentioned electromagnetic-absorbing coating, step 3) described in the fineness that is dispersed to be less than 20 μm, be on high speed dispersor, first low speed dispersion, then high speed dispersion is until fineness is less than 20 μm.Wherein said low speed dispersion is normally less than the rotating speed of 200rpm, and high speed dispersion is normally higher than the rotating speed of 500rpm; Can certainly be interpreted as and dispersion process is divided into two stages, the rotating speed of the latter half is higher than previous stage.
Preferred on this kind of preparation method basis of above-mentioned electromagnetic-absorbing coating, step 1) described in fresh spirulina be filter by spirulina medium the frond obtained.
Preferred on this kind of preparation method basis of above-mentioned electromagnetic-absorbing coating, step 1) in solid-liquid separation collect frond after drying carry out under 35 ~ 40 DEG C of conditions, more optimizedly 37 DEG C.
Preferred on this kind of preparation method basis of above-mentioned electromagnetic-absorbing coating, step 1) described in dropping be drip under the first solution is in agitation condition.
Preferred on this kind of preparation method basis of above-mentioned electromagnetic-absorbing coating, step 1) described in insulation perform in tube furnace.
Preferred on this kind of preparation method basis of above-mentioned electromagnetic-absorbing coating, step 1) described in solid-liquid separation be centrifugal; Preferred further, centrifugal rotational speed is 800 ~ 1200r/min, more optimizedly 1000r/min.
In above technical scheme, superfine talcum powder is a kind of complete name of industrial raw material, and not with " ultra-fine " restriction " talcum powder ", this raw material is widely used in the industry such as plastics, rubber, coating, commercially available namely available.
Water-based epoxy acrylic resin also can be described as water dispersible epoxy acrylic resin.
Process white is also a kind of complete name of industrial raw material, commercially available namely available.
And " spirulina chirality wave absorbing agent " belongs to from creating word, its scope characterized is: spirulina nickel plating material.
Described spirulina chirality wave absorbing agent can obtain by the following method: get the glutaraldehyde solution that fresh spirulina and concentration are 2 ~ 3% (w/w) and mix, the weight in wet base of described fresh spirulina and the weight ratio of described glutaraldehyde solution are 1:(18 ~ 22), then under 0 ~ 8 DEG C of condition, fix 2 ~ 6h, solid-liquid separation collects frond again, dry; With the dried frond of 4 ~ 6 weight part and 12 ~ 18 weight part NiCl
26H
2both O are solute, prepare solution, namely obtain the first solution; With the KBH of 0.4 ~ 0.6 weight part
4be solute with both KOH of 0.04 ~ 0.08 weight part, prepare solution, namely obtain the second solution; Above-mentioned second solution is dropped in the first solution, fully gets solid phase washing, drying after reaction; Then desciccate is incubated 50 ~ 70min under 420 ~ 480 DEG C of conditions, namely cooling obtains described spirulina chirality wave absorbing agent.
In addition, above technical scheme, in the preparation link of spirulina chirality wave absorbing agent, mixed with glutaraldehyde by spirulina is to play crosslinked fixed action, in order to maintain the spirrillum microtexture of spirulina, carry out nickel plating on this basis, thus obtain the spirulina chirality wave absorbing agent with wave-absorbing effect.The electromagnetic-absorbing coating prepared in the process of the present invention, be 1:4 by described first component, second component by formula ratio quality proportioning before use, mixing, uniform stirring, can use after slaking about 10min.
Coating main film forming substance of the present invention is disperseed to form under certain processing condition by water dispersible epoxy acrylic resin and aminoresin, and the paint film after solidification has high crosslink density, strong adhesion, high rigidity, the features such as high solids content; Strong and the environmental protection of coating and steel tower basal body binding force, has excellent antirust, anti-electromagnetic wave characteristic, can brush and play electromagnetic wave absorption effect on electric power pylon surface, have broad application prospects in fields such as transmission of electricity irony electrical meanss.
Coating provided by the invention, containing spirulina chirality wave absorbing agent in paint film, to the hertzian wave injected wherein, not only the electric field of alternation can polarize by induction medium, but also induction medium magnetization, to microwave section, there is very high dielectric loss.In addition, adopt the present invention to be constructed into film thickness for twice and can to reach hundred microns, produce simple, construct convenient, have without the need to advantages such as hot setting, drying at room temperature are rapid.Coating lacquer film thickness more than 100 μm, water tolerance is greater than 240h and passes through, and salt spray resistance is greater than 200h, and electromagnetic parameter testing shows, and change in dielectric constant is little, and the magnetic loss that changes greatly of magnetic permeability obviously strengthens.
In optimal technical scheme, further determinant proportioning is because the feature such as quality of forming film, absorbing property, rustless property of coating under this qualifications is more excellent.Further restriction flow agent is ethylene glycol monobutyl ether is because the film-formation result of this flow agent in the present invention's formula is better.In the preparation method of spirulina chirality wave absorbing agent, limiting fresh spirulina further by filter type acquisition is because the Effects on Microstructure of filtration method to frond is less, more effectively can ensure the wave-absorbing effect of nickel plating after product; Further restriction drying temperature is because this temperature condition is in the adaptive temperature of microorganism growth, can not affects its microtexture; Further restriction dropping condition is more abundant owing to mixing under agitation, reacting.In the preparation method of described coating, further preferably the dispersion pattern of second component is that two benches dispersion pattern dispersion effect is more fast more at a slow speed due to this elder generation.
Formulating of recipe of the present invention is reasonable, and in this formula range, have result of use the most remarkable, the present invention achieves outstanding technique effect with creationary technical renovation, simultaneously cost lower, be easy to realize, therefore there is outstanding promotion prospect.
Embodiment
Below will be described in detail the specific embodiment of the present invention.In order to avoid too much unnecessary details, in the examples below to belonging to known structure or function will not be described in detail.
The approximating language used in following examples can be used for quantitative expression, shows to allow quantity to have certain variation when not changing basic function.Therefore, this exact value itself is not limited to the numerical value that the language such as " approximately ", " left and right " is revised.In certain embodiments, " approximately " represents and allows its numerical value revised to change in the positive and negative scope of 10 (10%), such as, and any numerical value that what " about 100 " represented can be between 90 to 110.In addition, in the statement of " about first numerical value is to second value ", revise the first and second numerical value two numerical value approximately simultaneously.In some cases, approximating language may be relevant with the precision of surveying instrument.
Apart from outside definition, technology used in following examples and scientific terminology have the identical meanings generally understood with those skilled in the art of the invention.
In the examples below, the detection of coating property is comprised to the dielectric loss of coating paint film water tolerance, coating salt spray resistance and coating.Its dielectric loss is also called dielectric loss, refers to that dielectric medium is in alternating electric field, and make owing to consuming part electric energy the phenomenon that dielectric medium itself generates heat, in the present invention, this parameter is in order to evaluate the microwave absorbing property of coating; The detection of dielectric loss of the present invention utilizes microwave vector network analyzer or electric impedance analyzer to perform according to known method to paint film.Paint film water tolerance detects and implements according to the method for GB/T1733-1993.The detection of salt spray resistance is implemented according to the method for GB/T1771-2007.
Embodiment 1
A kind of electromagnetic-absorbing coating, be made up of in the ratio of 1:2 (w/w) first, second two kinds of components, wherein first component is grouped into by the one-tenth of following mass parts: 5 parts, aminoresin, flow agent 1 part, distilled water 15 parts, spirulina chirality wave absorbing agent 10 parts; Second component is grouped into by the one-tenth of following mass parts: water dispersible epoxy acrylic resin 15 parts, dispersion agent 1 part, defoamer 0.8 part, distilled water 25 parts, aluminium powder 10 parts, superfine talcum powder 10 parts, process white 10 parts, zinc phosphate 10 parts, rust-preventive agent 2 parts.
The preparation method of above-mentioned electromagnetic-absorbing coating, comprises the following steps:
1) spirulina chirality wave absorbing agent preparation:
1.1) substratum of growth of spirulina platensis is prepared in proportion, pour in the Erlenmeyer flask after sterilizing, add algae kind again and put into illumination box, illumination 12 hours, lucifuge 12 hours, temperature 37 DEG C of temperature constant states are cultivated to filter for 2 weeks and are used, and spirulina is fixed 4 hours at 4 DEG C by the glutaraldehyde solution with 2.5%, and spirulina isolated by whizzer, the rotating speed of whizzer is 1000 revs/min, and last spirulina is placed in loft drier drying treatment temperature 37 DEG C.
1.2) 15 parts of NiCl are claimed to obtain
26H
2o and spirulina are put into beaker and are added stirring solvent to dissolving to obtain A liquid completely.Claim to obtain 0.5 part of KBH
4put into beaker with 0.06 part of KOH and add the consoluet B liquid of stirring solvent.The beaker that A liquid is housed is carried out mechanical stirring, the constant pressure funnel installing B liquid is being housed simultaneously above A liquid beaker, mix up speed instillation A liquid, reaction terminates rear filtration, cleaning, dried for standby.
1.3) heat-treated in middle temperature tube furnace by the nickel plating spirulina that experiment is obtained, processing condition are: be incubated 1 hour at 450 DEG C, obtain spirulina chirality wave absorbing agent after cooling.
2) agitator mixing is added, at 300rmin by the aminoresin of formula ratio and flow agent
-1speed stir under, then add deionized water, spirulina chirality wave absorbing agent, high speed dispersion 30min, obtains first component.
3) by formula ratio, water dispersible epoxy acrylic resin, dispersion agent, defoamer, distilled water are added Homogeneous phase mixing in pot of getting the raw materials ready, at 1000rmin
-1speed under stir, add aluminium powder, superfine talcum powder, process white, zinc phosphate, rust-preventive agent, on high speed dispersor low speed dispersion, then high speed dispersion.Under the effect of high shear force, sand milling dispersion, until fineness is less than 20 μm, obtains second component.
4) need be 1:2 by formula ratio quality proportioning by described first component, second component during construction, mixing, uniform stirring, can use after slaking 10min.
The said products is detected, obtains following detected result.
Water tolerance: 241h passes through.
Salt fog resistance: 200h.
Dielectric loss: maximum absorption band is at 10.4GHz, and reflectivity is-21.62dB.
Embodiment 2
A kind of electromagnetic-absorbing coating, be made up of in the ratio of 1:2 (w/w) first, second two kinds of components, wherein first component is grouped into by the one-tenth of following mass parts: 8 parts, aminoresin, flow agent 1 part, distilled water 15 parts, spirulina chirality wave absorbing agent 15 parts; Second component is grouped into by the one-tenth of following mass parts: water dispersible epoxy acrylic resin 20 parts, dispersion agent 1 part, defoamer 0.8 part, distilled water 25 parts, aluminium powder 10 parts, superfine talcum powder 10 parts, process white 10 parts, zinc phosphate 10 parts, rust-preventive agent 2 parts.
The preparation method of above-mentioned electromagnetic-absorbing coating, comprises the following steps:
1) spirulina chirality wave absorbing agent preparation:
1.1) substratum of growth of spirulina platensis is prepared in proportion, pour in the Erlenmeyer flask after sterilizing, add algae kind again and put into illumination box, illumination 12 hours, lucifuge 12 hours, temperature 37 DEG C of temperature constant states are cultivated to filter for 2 weeks and are used, and spirulina is fixed 4 hours at 4 DEG C by the glutaraldehyde solution with 2.5%, and spirulina isolated by whizzer, the rotating speed of whizzer is 1000 revs/min, and last spirulina is placed in loft drier drying treatment temperature 37 DEG C.
1.2) 15 parts of NiCl are claimed to obtain
26H
2o and spirulina are put into beaker and are added stirring solvent to dissolving to obtain A liquid completely.Claim to obtain 0.5 part of KBH
4put into beaker with 0.06 part of KOH and add the consoluet B liquid of stirring solvent.The beaker that A liquid is housed is carried out mechanical stirring, the constant pressure funnel installing B liquid is being housed simultaneously above A liquid beaker, mix up speed instillation A liquid, reaction terminates rear filtration, cleaning, dried for standby.
1.3) heat-treated in middle temperature tube furnace by the nickel plating spirulina that experiment is obtained, processing condition are: be incubated 1 hour at 450 DEG C, obtain spirulina chirality wave absorbing agent after cooling.
2) agitator mixing is added, at 300rmin by the aminoresin of formula ratio and flow agent
-1speed stir under, then add deionized water, spirulina chirality wave absorbing agent, high speed dispersion 30min, obtains first component.
3) by formula ratio, water dispersible epoxy acrylic resin, dispersion agent, defoamer, distilled water are added Homogeneous phase mixing in pot of getting the raw materials ready, at 1000rmin
-1speed under stir, add aluminium powder, superfine talcum powder, process white, zinc phosphate, rust-preventive agent, on high speed dispersor low speed dispersion, then high speed dispersion.Under the effect of high shear force, sand milling dispersion, until fineness is less than 20 μm, obtains second component.
4) need be 1:2 by formula ratio quality proportioning by described first component, second component during construction, mixing, uniform stirring, can use after slaking 10min.
The said products is detected, obtains following detected result.
Water tolerance: 280h passes through.
Salt fog resistance: 242h.
Dielectric loss: maximum absorption band is at 10.4GHz, and reflectivity is-21.87dB.
Embodiment 3
A kind of electromagnetic-absorbing coating, be made up of in the ratio of 1:2 (w/w) first, second two kinds of components, wherein first component is grouped into by the one-tenth of following mass parts: 10 parts, aminoresin, flow agent 1 part, distilled water 15 parts, spirulina chirality wave absorbing agent 20 parts; Second component is grouped into by the one-tenth of following mass parts: water dispersible epoxy acrylic resin 25 parts, dispersion agent 1 part, defoamer 0.8 part, distilled water 25 parts, aluminium powder 10 parts, superfine talcum powder 10 parts, process white 10 parts, zinc phosphate 10 parts, rust-preventive agent 2 parts.
The preparation method of above-mentioned electromagnetic-absorbing coating, comprises the following steps:
1) spirulina chirality wave absorbing agent preparation:
1.1) substratum of growth of spirulina platensis is prepared in proportion, pour in the Erlenmeyer flask after sterilizing, add algae kind again and put into illumination box, illumination 12 hours, lucifuge 12 hours, temperature 37 DEG C of temperature constant states are cultivated to filter for 2 weeks and are used, and spirulina is fixed 4 hours at 4 DEG C by the glutaraldehyde solution with 2.5%, and spirulina isolated by whizzer, the rotating speed of whizzer is 1000 revs/min, and last spirulina is placed in loft drier drying treatment temperature 37 DEG C.
1.2) 15 parts of NiCl are claimed to obtain
26H
2o and spirulina are put into beaker and are added stirring solvent to dissolving to obtain A liquid completely.Claim to obtain 0.5 part of KBH
4put into beaker with 0.06 part of KOH and add the consoluet B liquid of stirring solvent.The beaker that A liquid is housed is carried out mechanical stirring, the constant pressure funnel installing B liquid is being housed simultaneously above A liquid beaker, mix up speed instillation A liquid, reaction terminates rear filtration, cleaning, dried for standby.
1.3) heat-treated in middle temperature tube furnace by the nickel plating spirulina that experiment is obtained, processing condition are: be incubated 1 hour at 450 DEG C, obtain spirulina chirality wave absorbing agent after cooling.
2) agitator mixing is added, at 300rmin by the aminoresin of formula ratio and flow agent
-1speed stir under, then add deionized water, spirulina chirality wave absorbing agent, high speed dispersion 30min, obtains first component.
3) by formula ratio, water dispersible epoxy acrylic resin, dispersion agent, defoamer, distilled water are added Homogeneous phase mixing in pot of getting the raw materials ready, at 1000rmin
-1speed under stir, add aluminium powder, superfine talcum powder, process white, zinc phosphate, rust-preventive agent, on high speed dispersor low speed dispersion, then high speed dispersion.Under the effect of high shear force, sand milling dispersion, until fineness is less than 20 μm, obtains second component.
4) need be 1:2 by formula ratio quality proportioning by described first component, second component during construction, mixing, uniform stirring, can use after slaking 10min.
The said products is detected, obtains following detected result.
Water tolerance: 301h passes through.
Salt fog resistance: 289h.
Dielectric loss: maximum absorption band is at 10.4GHz, and reflectivity is-22.33dB.
Embodiment 4
A kind of electromagnetic-absorbing coating, be made up of in the ratio of 1:2 (w/w) first, second two kinds of components, wherein first component is grouped into by the one-tenth of following mass parts: 5 parts, aminoresin, flow agent 0.5 part, distilled water 10 parts, spirulina chirality wave absorbing agent 10 parts; Second component is grouped into by the one-tenth of following mass parts: water-based epoxy acrylic resin 15 parts, dispersion agent 0.5 part, defoamer 0.2 part, distilled water 20 parts, aluminium powder 5 parts, superfine talcum powder 5 parts, process white 5 parts, zinc phosphate 5 parts, rust-preventive agent 1 part.Wherein flow agent is ethylene glycol monobutyl ether.
A kind of above-mentioned spirulina chirality wave absorbing agent, prepared by following methods:
1) get the glutaraldehyde solution that fresh spirulina and concentration are 2% (w/w) to mix, the weight in wet base of described fresh spirulina and the weight ratio of described glutaraldehyde solution are 1:18, then under 0 DEG C of condition, fix 2h, then solid-liquid separation collects frond, dry;
2) with 4 weight part steps 1) dried frond and 12 weight part NiCl
26H
2both O are solute, prepare solution, namely obtain the first solution; With the KBH of 0.4 weight part
4be solute with both KOH of 0.04 weight part, prepare solution, namely obtain the second solution; Above-mentioned second solution is dropped in the first solution, fully gets solid phase washing, drying after reaction;
3) step 2 is got) product is incubated 50min under 420 DEG C of conditions, and namely cooling obtains described spirulina chirality wave absorbing agent.
On this basis, meet the following conditions:
Step 1) described in fresh spirulina be filter by spirulina medium the frond obtained.
Step 1) described in drying carry out under 35 DEG C of conditions.
Step 2) described in dropping be drip under the first solution is in agitation condition.
Step 3) described in insulation perform in tube furnace.
The preparation method of above-mentioned electromagnetic-absorbing coating, comprises the following steps:
1) preparation of spirulina chirality wave absorbing agent: with reference to the preceding method of the present embodiment, concrete steps are slightly;
2) get the aminoresin of formula ratio and flow agent mixing, under 250r/min agitation condition, add distilled water and step 1 wherein) the spirulina chirality wave absorbing agent that obtains, dispersion 25min, obtains first component;
3) by formula ratio by water-based epoxy acrylic resin, dispersion agent, defoamer, distilled water Homogeneous phase mixing, under the agitation condition of 800r/min, add aluminium powder, superfine talcum powder, process white, zinc phosphate, rust-preventive agent, then dispersion is until fineness is less than 20 μm, obtains second component.
On this basis, meet the following conditions:
Step 3) described in the fineness that is dispersed to be less than 20 μm, be on high speed dispersor, the dispersion of first low speed, then high speed dispersion is until fineness is less than 20 μm.
Embodiment 5
A kind of electromagnetic-absorbing coating, be made up of in the ratio of 1:2 (w/w) first, second two kinds of components, wherein first component is grouped into by the one-tenth of following mass parts: 10 parts, aminoresin, flow agent 1 part, distilled water 15 parts, spirulina chirality wave absorbing agent 20 parts; Second component is grouped into by the one-tenth of following mass parts: water-based epoxy acrylic resin 25 parts, dispersion agent 1 part, defoamer 0.8 part, distilled water 25 parts, aluminium powder 10 parts, superfine talcum powder 10 parts, process white 10 parts, zinc phosphate 10 parts, rust-preventive agent 2 parts.
A kind of above-mentioned spirulina chirality wave absorbing agent, prepared by following methods:
1) get the glutaraldehyde solution that fresh spirulina and concentration are 3% (w/w) to mix, the weight in wet base of described fresh spirulina and the weight ratio of described glutaraldehyde solution are 1:22, then under 8 DEG C of conditions, fix 6h, then solid-liquid separation collects frond, dry;
2) with 6 weight part steps 1) dried frond and 18 weight part NiCl
26H
2both O are solute, prepare solution, namely obtain the first solution; With the KBH of 0.6 weight part
4be solute with both KOH of 0.08 weight part, prepare solution, namely obtain the second solution; Above-mentioned second solution is dropped in the first solution, fully gets solid phase washing, drying after reaction;
3) step 2 is got) product is incubated 70min under 480 DEG C of conditions, and namely cooling obtains described spirulina chirality wave absorbing agent.
On this basis, meet the following conditions:
Step 1) described in drying carry out under 40 DEG C of conditions.
Step 2) described in dropping be drip under the first solution is in agitation condition.
The preparation method of above-mentioned electromagnetic-absorbing coating, comprises the following steps:
1) preparation of spirulina chirality wave absorbing agent: with reference to the preceding method of the present embodiment, concrete steps are slightly;
2) get the aminoresin of formula ratio and flow agent mixing, under 350r/min agitation condition, add distilled water and step 1 wherein) the spirulina chirality wave absorbing agent that obtains, dispersion 35min, obtains first component;
3) by formula ratio by water-based epoxy acrylic resin, dispersion agent, defoamer, distilled water Homogeneous phase mixing, under the agitation condition of 1200r/min, add aluminium powder, superfine talcum powder, process white, zinc phosphate, rust-preventive agent, then dispersion is until fineness is less than 20 μm, obtains second component.
On this basis, meet the following conditions:
Step 3) described in the fineness that is dispersed to be less than 20 μm, be on high speed dispersor, the dispersion of first low speed, then high speed dispersion is until fineness is less than 20 μm.
Embodiment 6
A kind of electromagnetic-absorbing coating, be made up of in the ratio of 1:2 (w/w) first, second two kinds of components, wherein first component is grouped into by the one-tenth of following mass parts: 7 parts, aminoresin, flow agent 0.6 part, distilled water 13 parts, spirulina chirality wave absorbing agent 18 parts; Second component is grouped into by the one-tenth of following mass parts: water-based epoxy acrylic resin 20 parts, dispersion agent 0.7 part, defoamer 0.5 part, distilled water 22 parts, aluminium powder 8 parts, superfine talcum powder 8 parts, process white 9 parts, zinc phosphate 6 parts, rust-preventive agent 1.5 parts.
A kind of above-mentioned spirulina chirality wave absorbing agent, prepared by following methods:
1) get the glutaraldehyde solution that fresh spirulina and concentration are 2.5% (w/w) to mix, the weight in wet base of described fresh spirulina and the weight ratio of described glutaraldehyde solution are 1:20, then under 0 ~ 8 DEG C of condition, fix 4h, then solid-liquid separation collects frond, dry;
2) with 5 weight part steps 1) dried frond and 16 weight part NiCl
26H
2both O are solute, prepare solution, namely obtain the first solution; With the KBH of 0.5 weight part
4be solute with both KOH of 0.06 weight part, prepare solution, namely obtain the second solution; Above-mentioned second solution is dropped in the first solution, fully gets solid phase washing, drying after reaction;
3) step 2 is got) product is incubated 60min under 450 DEG C of conditions, and namely cooling obtains described spirulina chirality wave absorbing agent.
The preparation method of above-mentioned electromagnetic-absorbing coating, comprises the following steps:
1) preparation of spirulina chirality wave absorbing agent: with reference to the preceding method of the present embodiment, concrete steps are slightly;
2) get the aminoresin of formula ratio and flow agent mixing, under 300r/min agitation condition, add distilled water and step 1 wherein) the spirulina chirality wave absorbing agent that obtains, dispersion 30min, obtains first component;
3) by formula ratio by water-based epoxy acrylic resin, dispersion agent, defoamer, distilled water Homogeneous phase mixing, under the agitation condition of 1000r/min, add aluminium powder, superfine talcum powder, process white, zinc phosphate, rust-preventive agent, then dispersion is until fineness is less than 20 μm, obtains second component.
Be 1:2 by above-mentioned first component, second component by formula ratio quality proportioning before using, mixing, uniform stirring, can use after slaking 12min.
Above embodiments of the invention have been described in detail, but described content is only preferred embodiment of the present invention, not in order to limit the present invention.All make in application range of the present invention any amendment, equivalent to replace and improvement etc., all should be included within protection scope of the present invention.
Claims (10)
1. an electromagnetic-absorbing coating, it is characterized in that being made up of the ratio of first, second two kinds of components by weight 1:2, wherein first component comprises the composition of following mass parts: 5 ~ 10 parts, aminoresin, flow agent 0.5 ~ 1 part, distilled water 10 ~ 15 parts, spirulina chirality wave absorbing agent 10 ~ 20 parts;
Second component comprises the composition of following mass parts: water-based epoxy acrylic resin 15 ~ 25 parts, dispersion agent 0.5 ~ 1 part, defoamer 0.2 ~ 0.8 part, distilled water 20 ~ 25 parts, aluminium powder 5 ~ 10 parts, superfine talcum powder 5 ~ 10 parts, process white 5 ~ 10 parts, zinc phosphate 5 ~ 10 parts, rust-preventive agent 1 ~ 2 part.
2. electromagnetic-absorbing coating according to claim 1, it is characterized in that this coating is made up of the ratio of first, second two kinds of components by weight 1:2, wherein first component is grouped into by the one-tenth of following mass parts: 5 parts, aminoresin, flow agent 1 part, distilled water 15 parts, spirulina chirality wave absorbing agent 10 ~ 20 parts;
Second component is grouped into by the one-tenth of following mass parts: water-based epoxy acrylic resin 15 parts, dispersion agent 1 part, defoamer 0.8 part, distilled water 25 parts, aluminium powder 10 parts, superfine talcum powder 10 parts, process white 10 parts, zinc phosphate 10 parts, rust-preventive agent 2 parts.
3. electromagnetic-absorbing coating according to claim 1 and 2, is characterized in that described flow agent is ethylene glycol monobutyl ether.
4. electromagnetic-absorbing coating according to claim 1 and 2, is characterized in that described spirulina chirality wave absorbing agent is prepared by following methods:
1) get the glutaraldehyde solution that fresh spirulina and mass concentration are 2 ~ 3% to mix, the weight in wet base of described fresh spirulina and the weight ratio of described glutaraldehyde solution are 1:18 ~ 1:22, then under 0 ~ 8 DEG C of condition, fix 2 ~ 6h, then solid-liquid separation collects frond, dry;
2) with 4 ~ 6 weight part steps 1) dried frond and 12 ~ 18 weight part NiCl
26H
2both O are solute, prepare solution, namely obtain the first solution; With the KBH of 0.4 ~ 0.6 weight part
4be solute with both KOH of 0.04 ~ 0.08 weight part, prepare solution, namely obtain the second solution; Above-mentioned second solution is dropped in the first solution, fully gets solid phase washing, drying after reaction;
3) step 2 is got) product is incubated 50 ~ 70min under 420 ~ 480 DEG C of conditions, and namely cooling obtains described spirulina chirality wave absorbing agent.
5. electromagnetic-absorbing coating according to claim 4, is characterized in that step 1) described in fresh spirulina be filter by spirulina medium the frond obtained.
6. electromagnetic-absorbing coating according to claim 4, is characterized in that step 1) described in drying carry out under 35 ~ 40 DEG C of conditions.
7. electromagnetic-absorbing coating according to claim 4, is characterized in that step 2) described in dropping be drip under the first solution is in agitation condition.
8. electromagnetic-absorbing coating according to claim 4, is characterized in that step 3) described in insulation perform in tube furnace.
9. a kind of preparation method of electromagnetic-absorbing coating described in claim 1 or 2, is characterized in that comprising the following steps:
1) preparation of spirulina chirality wave absorbing agent: get the glutaraldehyde solution that fresh spirulina and mass concentration are 2 ~ 3% and mix, the weight in wet base of described fresh spirulina and the weight ratio of described glutaraldehyde solution are 1:18 ~ 1:22, then under 0 ~ 8 DEG C of condition, fix 2 ~ 6h, solid-liquid separation collects frond again, dry; With the dried frond of 4 ~ 6 weight part and 12 ~ 18 weight part NiCl
26H
2both O are solute, prepare solution, namely obtain the first solution; With the KBH of 0.4 ~ 0.6 weight part
4be solute with both KOH of 0.04 ~ 0.08 weight part, prepare solution, namely obtain the second solution; Above-mentioned second solution is dropped in the first solution, fully gets solid phase washing, drying after reaction; Then desciccate is incubated 50 ~ 70min under 420 ~ 480 DEG C of conditions, namely cooling obtains described spirulina chirality wave absorbing agent;
2) get the aminoresin of formula ratio and flow agent mixing, under 250 ~ 350r/min agitation condition, add distilled water and step 1 wherein) the spirulina chirality wave absorbing agent that obtains, dispersion 25 ~ 35min, obtains first component;
3) by formula ratio by water-based epoxy acrylic resin, dispersion agent, defoamer, distilled water Homogeneous phase mixing, under the agitation condition of 800 ~ 1200r/min, add aluminium powder, superfine talcum powder, process white, zinc phosphate, rust-preventive agent, then dispersion is until fineness is less than 20 μm, obtains second component.
10. preparation method according to claim 9, is characterized in that step 3) described in the fineness that is dispersed to be less than 20 μm, be on high speed dispersor, the dispersion of first low speed, then high speed dispersion is until fineness is less than 20 μm.
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| CN108699378A (en) * | 2018-04-25 | 2018-10-23 | 深圳鹏汇功能材料有限公司 | Aqueous wave absorbing coating and its preparation method and application |
| CN109575744A (en) * | 2018-10-19 | 2019-04-05 | 苏州铂韬新材料科技有限公司 | A kind of coated article and preparation method thereof for inhaling wave energy with antirust |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| CN108699378A (en) * | 2018-04-25 | 2018-10-23 | 深圳鹏汇功能材料有限公司 | Aqueous wave absorbing coating and its preparation method and application |
| CN109575744A (en) * | 2018-10-19 | 2019-04-05 | 苏州铂韬新材料科技有限公司 | A kind of coated article and preparation method thereof for inhaling wave energy with antirust |
| CN109575744B (en) * | 2018-10-19 | 2020-12-08 | 苏州铂韬新材料科技有限公司 | Coating piece with rust-proof wave-absorbing function and preparation method thereof |
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