CN109735217A - A kind of watersoluble plumbago alkene electromagnetic screen coating and preparation method thereof - Google Patents
A kind of watersoluble plumbago alkene electromagnetic screen coating and preparation method thereof Download PDFInfo
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Abstract
The invention discloses a kind of watersoluble plumbago alkene electromagnetic screen coating and preparation method thereof, belong to a kind of watersoluble plumbago alkene electromagnetic screen coating and preparation method thereof.The coating is two-component, and component A is made of hydroxylating aqueous fluorine-containing acrylic resin, conducting polymer modified graphene aqueous dispersions, silver-plated copper powder, ferrite powder, rust resisting pigment, aqueous passivator, polycarbodiimide, auxiliary agent and water；B component is made of isocyanate curing agent, dehydrating agent and solvent.The product has the characteristics that shielding frequency range is wide, shield effectiveness is high, lightweight, overlength is weather-proof, corrosion-resistant, coating VOC emission is low, storage stability is high, long-acting shielding is good.
Description
Technical field
The present invention relates to paint fields, and in particular to a kind of watersoluble plumbago alkene electromagnetic screen coating and preparation method thereof.
Background technique
With electronics, the rapid development of information industry, electrified process has penetrated into each corner of national economy, makes a living
It produces, live and also buried completely new hidden danger while bringing huge convenient.On the one hand, it can be generated not during electric equipment operation
With the electromagnetic radiation of intensity, radiation pollution is caused to cause harm to the human body." the residential housing rule come into effect on March 1st, 2006
Model ", establishment group explicitly points out in written general condensed summary: " electromagnetic pollution be acknowledged as atmosphere pollution, water pollution,
The fourth-largest public hazards after noise pollution.Electromagnetic radiation is classified as the main pollution that must be controlled by the United Nations's human environment conference
One of object." on the other hand, electromagnetic radiation will lead to electromagnetic wave leakage, threaten information security；Meanwhile electrical equipment easily by
The interference radiated to external electromagnetic brings serious consequence for commercial affairs, production, life, even military affairs.Therefore, it takes reasonable
Electrostatic screen scheme is particularly significant.
Typically, electromagnetic shielding material can be divided into structural type by moulding process and bearing capacity and coating type is electromagnetically shielded
Material.In various electromagnetic shielding materials, electromagnetic screen coating with its simple process, without special installation, do not take up space and
Numerous advantages such as integrated with substrate become outstanding person therein.Statistics display, electromagnetic screen coating account for shielding material total amount
80% or more.
In many constituents of electromagnetic screen coating, the electromagnetic performance of conductive filler is the pass for determining coating shielding properties
Key.According to the difference for filling out conductive material type, electromagnetic screen coating can be divided into silver-colored system, 4 major class of copper system, nickel system and carbon system.Silver system product
Electric conductivity, excellent in stability, expensive, be chiefly used in the higher aerospace field of shielding requirements.The conduction of copper system product
Property is taken second place, and shield effectiveness is also preferable, but inoxidizability is bad.The electric conductivity of nickel system product is again, price is human-oriented, in shield effectiveness
Above, inoxidizability is strong, is the mainstream of current electromagnetic screen coating application.Carbon system product mainly using electrically conductive graphite as filler, such
Product price is cheap, and electric conductivity is bad, mostly low-end applications.
In terms of film forming matter, electromagnetic screen coating mostly uses the solvent type polyurethane resin, solvent type acrylic resin to be
Main film forming component.Coating largely uses hydro carbons, benzene class, esters and ketones solvent, and coating VOC is up to 400~600g/L, environment
Friendly is poor.As the atmosphere such as national emission reduction control haze administer the gradually landing of policy, Water-borne modification just becomes electromagnetic screen coating
Emphasis transition direction.Currently, Some Enterprises have been proposed the aqueous electromagnetic shielding coating of environmental protection successively, but there are still more for product
Technological deficiency.Mainly are as follows: 1) shielding action seriously relies on metallic conductive fillers, thick and heavy, at high cost, the decorative difference of coating.In addition
The storage problem of not adequately addressed metal packing in an aqueous medium, gained coating shield efficiency is relatively low, shielding wave band is partially narrow；2) it applies
The aqueous vapor barrier property of layer is bad, weather resistance is general.After coating puts into outdoor use, it may appear that metal packing oxidation, coating
The problems such as water suction, resin dusting, shield effectiveness is caused quickly to reduce, coating frequency of maintenance is high.3) product is mainly directed towards concrete
Substrate, corrosion protection is ineffective when applied to metal base, and it is bad to be applied to adhesive force when plastic basis material.
Summary of the invention
The object of the present invention is to provide one kind to be suitable for metal, engineering plastics, concrete surface, has excellent electromagnetic screen
It covers, water vapor rejection and the watersoluble plumbago alkene electromagnetic screen coating of corrosion protection and preparation method thereof.The coating is aqueous, double groups
Part, self-drying type product, have that shielding frequency range is wide, shield effectiveness is high, lightweight, overlength are weather-proof, corrosion-resistant, coating VOC emission
The low, technical advantages such as storage stability is high, long-acting shielding is good.
The purpose of the present invention can be achieved through the following technical solutions:
A kind of watersoluble plumbago alkene electromagnetic screen coating, the coating include component A and component B；
The ingredient of component A is as follows:
The ingredient of component B is as follows:
70~90 parts of isocyanate curing agent
1~2 part of dehydrating agent
9~28 parts of solvent；
Component A and component B are in 100:(5~15) ratio mixing.
In technical solution of the present invention: the hydroxylating aqueous fluorine-containing acrylic resin is the east fluorination aqueous tree of work DF-03
Rouge or instruction reach green wood HD-827 water-base resin.
In technical solution of the present invention: the conducting polymer modified graphene aqueous dispersions are to be prepared via a method which
It obtains:
S1: ultrasonic disperse is uniform after water, sodium hydroxide, graphene oxide powder, aniline and pyrroles are mixed, and is mixed
Liquid；
S2: under conditions of ice-water bath, the aqueous solution of ammonium persulfate is slowly added into the mixed liquor in S1 and is reacted
15~25h adjusts reaction system to alkalinity after reaction, and hydrazine hydrate is added and carries out back flow reaction 18~for 24 hours, back flow reaction knot
It is 7~8 that the solid filtered out after beam, which is washed to transparent and pH value, obtains solid head product；
S3: for regulation system to acidity, ultrasonic disperse is equal after the solid head product is mixed with wetting dispersing agent and water
It is even, conducting polymer modified graphene aqueous dispersions can be obtained.
In technical solution of the present invention, the parameter of conducting polymer modified graphene aqueous dispersions is as follows:
In S1: water, sodium hydroxide, graphene oxide powder, aniline and the mass ratio of pyrroles are 50~100:0.1~0.3:
5~15:0.1~5:0.1~0.5；
In S2: the mass ratio of pyrroles, ammonium persulfate and hydrazine hydrate are 0.1~0.5:0.1~5:0.02~0.1；
In S3: the mass ratio of solid head product, wetting dispersing agent and water is 5~15:1~5:80~90；
It is preferred that: the wetting dispersing agent is that Digao Dispersion 757W wetting dispersing agent or Bi Ke BYK-190 are soaked
Dispersing agent.
In technical solution of the present invention: in component A:
The aqueous passivator is WD012 aqueous aluminum powder passivator；
The rust resisting pigment is triumphant one hundred HEUCOPHOS ZAPP rust resisting pigment；
The wetting dispersing agent is Digao Dispersion 757W wetting dispersing agent or Bi Ke BYK-190 wetting and dispersing
Agent；
The coalescing agent is alcohol ester 12 or dipropylene；
The auxiliary rheological agents are the modest BENTONE-LT auxiliary rheological agents of Hai Mingsi moral；
The substrate wetting agents are air chemical industry Surfynol 104E substrate wetting agents；
The defoaming agent is Bi Ke BYK-024 defoaming agent；
The polyurethane associative thickener is Tao Shi RM-8W thickener；
The polycarbodiimide is this tal fibre XR-5580 or this tal fibre XL-701.
In technical solution of the present invention: in component B:
The isocyanate curing agent is that Bayhydur 305 (polyether-modified HDI trimer), Cohan wound are created in Cohan
Desmodur N3300 (HDI trimer) and Cohan wound Desmodur Z4470 SN (IPDI tripolymer), the mixed proportion of three
For 1~6:3~8:1.
In technical solution of the present invention: in component B: the solvent is dipropylene glycol methyl ether acetic acid esters or propylene glycol oxalic acid
Ester.
In technical solution of the present invention: in component B: dehydrating agent is OMG Additive TI dehydrating agent.
A kind of preparation method of above-mentioned watersoluble plumbago alkene electromagnetic screen coating, method includes the following steps:
(1) preparation method of component A:
S1: silver-plated copper powder, aqueous passivator are added in dehydrated alcohol, is stirred 30min；Filter out silver-plated copper
Powder, and the dry 20min at 50 DEG C, the silver-plated copper powder being surface-treated；
S2: Xiang Shuizhong is sequentially added under stirring conditions wetting dispersing agent, auxiliary rheological agents, is led at fumed silica
Electric polymer modified graphene aqueous dispersions, the silver-plated copper powder of surface treatment, ferrite powder, rust resisting pigment and defoaming agent, high speed
It is dispersed to uniformly, without powder ball without agglomeration；Dimethylethanolamine, adjustment slurry pH value to 6.5~7.5 are added later；Hydroxyl is added
Change aqueous fluorine-containing acrylic resin, coalescing agent, substrate wetting agents, isothiazolinone, stirs evenly；Polyurethane association type is added
Thickener adjusts system viscosity to 70~110KU；Be added polycarbodiimide, after mixing evenly room temperature curing for 24 hours to get arrive water
Property graphene electromagnetic screen coating component A；
(2) preparation method of component B: paint mixing kettle is added in solvent, dehydrating agent, stirs 30min under nitrogen protection.It is added
Isocyanate curing agent stirs evenly, i.e. acquisition watersoluble plumbago alkene electromagnetic screen coating B component；
(3) by component A and component B in 100:(5~15) ratio be uniformly mixed, target product can be obtained.
Beneficial effects of the present invention:
Firstly, shielding system using the ternary of " modified graphene/silver-plated copper powder/ferrite ", coating shield frequency range is wide, shields
Cover efficiency height.Graphene have carbon hexatomic ring composition two-dimensional periodic structure, have π-it is pi-conjugated, have splendid conductivity,
Higher specific surface area, tensile strength, light transmission rate and stability etc..The introducing of graphite olefinic constituents has been obviously improved coating conductance
Metal consumption is effectively reduced in rate, makes coating more lightweight.Shield effectiveness decrease caused by being reduced simultaneously because of metal oxidation etc.
Risk.Secondly, carrying out functional modification to graphene using conducting polymer.Graphite is overcome in the case where not influencing conductivity
Alkene lamella agglomeration traits improve the compatibility of graphene and film-forming resin, give full play to water vapor rejection, the mechanics reinforcement of graphene
Characteristic.Third, the comprehensive mode being passivated using metal lining and organic matter are carried out anti-oxidation protection to copper powder, greatly improve copper powder
Stability in water environment and outdoor atmospheric environment.Meanwhile by rationally controlling passivator dosage, coated conductive is avoided the occurrence of
Property reduce problem.4th, the aqueous fluorine-containing acrylic acid-isocyanates film forming system for selecting high in environmental protection, having excellent weather resistance, coating
VOC emission can be down to 50g/L or less.Compare the styrene-acrylic emulsion, pure-acrylic emulsion, hydroxyl acrylic emulsion etc. generally used on the market
Film forming system, program weather resistance is more excellent, the protection time limit is higher, and coating maintenance cost can be greatly decreased.5th, preferably poly- carbon
Change diimine and high-efficiency enclosed is carried out to hydrophilic radical excessive in resin, auxiliary agent.Under the premise of not reducing system stability, substantially
Water resistance, chemical-resistant, salt fog resistance and the hardness for promoting coating, further increase protection effect.6th, using hydrophilic different
The mode that cyanate is compounded with hydrophobic isocyanurate prepares waterborne curing agent, evades because hydrophilic segment too high levels are to coating antiseptic
The influence of performance.Meanwhile by reasonably matching screening, it is ensured that the high-compatibility of curative systems and water-base resin system,
Assign coating more preferably decorative effect.In addition, being properly added rate of drying and hardness that IPDI tripolymer improves coating.
The watersoluble plumbago alkene electromagnetic screen coating shielding frequency range of the disclosure of the invention is wide, shield effectiveness is high, lightweight, overlength are resistance to
It waits, corrosion-resistant, coating VOC emission is low, storage stability is high, long-acting shielding is good.
Specific embodiment
Below with reference to embodiment, the present invention will be further described, and but the scope of the present invention is not limited thereto.Embodiment 1
~4 and comparative example 1~3 watersoluble plumbago alkene electromagnetic screen coating preparation step it is following (material proportion is shown in Table 1):
(1) water, sodium hydroxide, stirring the preparation of conducting polymer modified graphene aqueous dispersions: are added in the reactor
Uniformly.Graphene oxide powder, aniline, pyrroles is added, ultrasonic disperse 30min is transferred to ice-water bath stirring 5min.By ammonium persulfate
It is dissolved in the water, is slowly dropped into reactor, 1h is dripped off.Under ice-water bath, continue to be stirred to react 15~16h.A small amount of ammonium hydroxide is added,
Adjustment system pH to 10~11.80% hydrazine hydrate is added, 18~19h of back flow reaction at 80~90 DEG C.It is cooling, solid is filtered out,
Dehydrated alcohol, distilled water washed product are successively used, until eluate is 7~8 in colorless and transparent and pH value.By above-mentioned solid and profit
Hygroscopic water powder, water are uniformly mixed, and the hydrochloric acid conditioning solution pH value that 0.01mol/L is added dropwise is 6~7, ultrasonic disperse 30min is obtained
Obtain conducting polymer modified graphene aqueous dispersions.
(2) silver-plated copper powder, the passivation of WD012 aqueous aluminum powder the surface treatment of silver-plated copper powder: are added in 150g dehydrated alcohol
Agent is stirred 30min.Silver-plated copper powder is filtered out, and the dry 20min at 50 DEG C, the silver-plated copper powder being surface-treated.
(3) preparation of watersoluble plumbago alkene electromagnetic screen coating component A: Xiang Shuizhong sequentially adds wetting and dispersing under stiring
Agent, fumed silica, BENTONE-LT auxiliary rheological agents, conducting polymer modified graphene aqueous dispersions, surface treatment plating
Silver-bearing copper powder, ferrite powder, ZAPP rust resisting pigment, BYK-024 defoaming agent, high speed dispersion is to uniformly, without powder ball without agglomeration.It is added two
Methylethanolamine, adjustment slurry pH value to 6.5~7.5.Be added hydroxylating aqueous fluorine-containing acrylic resin, coalescing agent,
Surfynol 104E substrate wetting agents, isothiazolinone, stir evenly.Be added RM-8W thickener adjust system viscosity to 70~
110KU.Be added polycarbodiimide, after mixing evenly room temperature curing for 24 hours to get arrive watersoluble plumbago alkene electromagnetic screen coating A group
Part.
(4) paint the preparation of watersoluble plumbago alkene electromagnetic screen coating B component: is added in solvent, Additive TI dehydrating agent
Kettle stirs 30min under nitrogen protection.Cohan is added and creates Bayhydur 305, Desmodur N3300 and Desmodur
Z4470 SN, stirs evenly, i.e. acquisition watersoluble plumbago alkene electromagnetic screen coating B component.
The additive amount (g) of material in 1 Examples 1 to 4 of table and comparative example 1~3
The key technical indexes of 2 watersoluble plumbago alkene electromagnetic screen coating of table
Test result shows that Examples 1 to 4 is obtained suitable for metal, engineering plastics, concrete surface, stability
Height, shield effectiveness is excellent, corrosion protection is prominent, the watersoluble plumbago alkene electromagnetic screen coating of excellent in weather.Wherein, embodiment 2, reality
It is more prominent to apply example 3, the comprehensive performance of embodiment 4.
As the test result of Examples 1 to 4 it is found that using high graphene, low metal filling mixture ratio embodiment 2 obtained by produce
Product are superior to low graphene in terms of surface resistivity, shield effectiveness, hardness, adhesive force and salt fog resistance, high metal filler contains
The embodiment 1 of amount.Meanwhile after outdoor aging in 1 year, 2 product shield effectiveness of embodiment is more stable.As it can be seen that using
Conducting polymer modified graphene substitution metal packing will not only damage the conductivity and shielding efficiency of system, but also be conducive to
Coating PVC is reduced, coating compactness is improved.Meanwhile graphene can also give full play to mechanics reinforcement and steam shielding action, be promoted
The mechanical performance and anti-corrosion effect of coating.In test it was also found that for " modified graphene/silver-plated copper powder/ferrite " three
" modified graphene+silver-plated copper powder " of first compound system, higher proportion is conducive to the radioshielding (embodiment 3) of electromagnetic wave, compared with
A high proportion of " modified graphene+ferrite " is conducive to the low frequency shielding (embodiment 2) of electromagnetic wave.Therefore, in practical applications
Coating formula can be reasonably adjusted according to building, the shielding frequency range demand of electrical equipment.For all spectrum mask demands
Higher occasion can obtain more preferably shield effectiveness (being shown in Table 3) by way of two kinds of coatings of coating simultaneously.
The comprehensive shielded effect of double coatings of 3 embodiment of table, 2 coating collocation 3 coating of embodiment
1 test result of comparative example is shown, can not obtain low surface resistivity, Gao Ping using unmodified graphene dispersing solution
Cover the product of efficiency.Meanwhile salt fog resistance, water resistance, the hardness of coating are also declined, resistance to artificial weathering test also compared with
There is Blister in early.This is derived from non-modified graphene and quickly reunites in coating system, can not play it is conductive,
The characteristics such as mechanics reinforcement, water vapor rejection, properties of coating reduce.
2 test result of comparative example shows that the control of hydrophilic radical content is for the water resistance of coating, anti-corrosive properties and long-acting screen
Covering property is most important.Maturation process is carried out to coating without using polycarbodiimide, will lead in coating residual largely by auxiliary agent,
The hydrophilic radical that resin introduces；Using only hydrophilic isocyanate curing agent, can be further introduced into coating system a large amount of hydrophilic
Base.The two collaboration can significantly improve coating water absorption rate, damage water resistance, the salt fog resistance of product, be easier to so as to cause in coating
Blistering falls off, metal packing is easier to oxidation consumption, significantly affects long-term effect.It, on the one hand can be effective using polycarbodiimide
Close hydrophilic radical, on the other hand can promote the crosslink density of coating, improve hardness with it is wear-resisting.It also found in experiment, poly- carbon
The dosage for changing diimine answers strict control, otherwise will appear resin gelatinization, causes coating thickening, divides water, demulsification, particle etc. and ask
Topic.It is appropriate to spell the water resistance that coating is promoted with hydrophobic HDI trimer, to improve corrosion protection effect.It is appropriate to spell
The rate of drying and hardness of coating can be improved with IPDI tripolymer.It has also been found that, hydrophobic type curing agent ratio should not mistake in experiment
Otherwise height can destroy the compatibility of curing agent and water-base resin, lead to that coating film forming is poor, gloss is low, while can also damage painting
The adhesive force and corrosion protection effect of layer.
3 test result of comparative example shows that carrying out surface treatment to metal packing without using passivator will affect the screen of coating
Efficiency is covered, especially long-acting shield effectiveness.Since when carrying out silver-plated cladding, surface has cladding defect to copper powder, such as without having
Effect protection, copper powder will appear partial oxidation after aqueous medium is added, influence the shielding properties at initial stage.And after putting into outdoor use,
The copper powder not adequately protected can faster oxidation loss, to the quick reduction of shield effectiveness occur.It has also been found that, it is passivated in experiment
The dosage of agent answers strict control, otherwise can reduce the electric conductivity of metal packing, damages electromagnetic shielding performance.
Claims (9)
1. a kind of watersoluble plumbago alkene electromagnetic screen coating, it is characterised in that: the coating includes component A and component B；
The ingredient of component A is as follows:
The ingredient of component B is as follows:
70~90 parts of isocyanate curing agent
1~2 part of dehydrating agent
9~28 parts of solvent；
Component A and component B are in 100:(5~15) ratio mixing.
2. watersoluble plumbago alkene electromagnetic screen coating according to claim 1, it is characterised in that: the hydroxylating is aqueous to be contained
Perfluoroalkyl acrylate resin is that east fluorination work DF-03 water-base resin or instruction reach green wood HD-827 water-base resin.
3. watersoluble plumbago alkene electromagnetic screen coating according to claim 1, it is characterised in that: the conducting polymer changes
Property graphene aqueous dispersions are to be prepared via a method which to obtain:
S1: ultrasonic disperse is uniform after water, sodium hydroxide, graphene oxide powder, aniline and pyrroles are mixed, and obtains mixed liquor；
S2: under conditions of ice-water bath, the aqueous solution of ammonium persulfate is slowly added into the mixed liquor in S1 and react 15~
25h adjusts reaction system to alkalinity after reaction, and hydrazine hydrate is added and carries out back flow reaction 18~for 24 hours, after back flow reaction
It is 7~8 that the solid filtered out, which is washed to transparent and pH value, obtains solid head product；
S3: regulation system is to acidity after the solid head product is mixed with wetting dispersing agent and water, and ultrasonic disperse is uniform, i.e.,
Conducting polymer modified graphene aqueous dispersions can be obtained.
4. according to watersoluble plumbago alkene electromagnetic screen coating described in right 2, it is characterised in that:
In S1: water, sodium hydroxide, graphene oxide powder, aniline and the mass ratio of pyrroles be 50~100:0.1~0.3:5~
15:0.1~5:0.1~0.5；
In S2: the mass ratio of pyrroles, ammonium persulfate and hydrazine hydrate are 0.1~0.5:0.1~5:0.02~0.1；
In S3: the mass ratio of solid head product, wetting dispersing agent and water is 5~15:1~5:80~90；
It is preferred that: the wetting dispersing agent is Digao Dispersion 757W wetting dispersing agent or Bi Ke BYK-190 wetting and dispersing
Agent.
5. watersoluble plumbago alkene electromagnetic screen coating according to claim 1, it is characterised in that: in component A:
The aqueous passivator is WD012 aqueous aluminum powder passivator；
The rust resisting pigment is triumphant one hundred HEUCOPHOS ZAPP rust resisting pigment；
The wetting dispersing agent is Digao Dispersion 757W wetting dispersing agent or Bi Ke BYK-190 wetting dispersing agent；
The coalescing agent is alcohol ester 12 or dipropylene；
The auxiliary rheological agents are the modest BENTONE-LT auxiliary rheological agents of Hai Mingsi moral；
The substrate wetting agents are air chemical industry Surfynol 104E substrate wetting agents；
The defoaming agent is Bi Ke BYK-024 defoaming agent；
The polyurethane associative thickener is Tao Shi RM-8W thickener；
The polycarbodiimide is this tal fibre XR-5580 or this tal fibre XL-701.
6. watersoluble plumbago alkene electromagnetic screen coating according to claim 1, it is characterised in that: in component B:
The isocyanate curing agent is that Bayhydur 305 (polyether-modified HDI trimer), Cohan wound are created in Cohan
Desmodur N3300 (HDI trimer) and Cohan wound Desmodur Z4470 SN (IPDI tripolymer), the mixed proportion of three
For 1~6:3~8:1.
7. watersoluble plumbago alkene electromagnetic screen coating according to claim 1, it is characterised in that: in component B: the solvent
For dipropylene glycol methyl ether acetic acid esters or propylene-glycol diacetate.
8. watersoluble plumbago alkene electromagnetic screen coating according to claim 1, it is characterised in that: in component B: dehydrating agent is
OMG Additive TI dehydrating agent.
9. a kind of preparation method of watersoluble plumbago alkene electromagnetic screen coating described in claim 1, it is characterised in that: this method packet
Include following steps:
(1) preparation method of component A:
S1: silver-plated copper powder, aqueous passivator are added in dehydrated alcohol, is stirred 30min；Silver-plated copper powder is filtered out, and
Dry 20min, the silver-plated copper powder being surface-treated at 50 DEG C；
S2: Xiang Shuizhong is sequentially added under stirring conditions wetting dispersing agent, fumed silica, auxiliary rheological agents, conductive poly-
Polymer modified graphene aqueous dispersions, the silver-plated copper powder of surface treatment, ferrite powder, rust resisting pigment and defoaming agent, high speed dispersion
To uniformly, without powder ball without agglomeration；Dimethylethanolamine, adjustment slurry pH value to 6.5~7.5 are added later；Hydroxylating water is added
Property fluoroacrylic resin, coalescing agent, substrate wetting agents, isothiazolinone, stir evenly；The thickening of polyurethane association type is added
Agent adjusts system viscosity to 70~110KU；Be added polycarbodiimide, after mixing evenly room temperature curing for 24 hours to get arrive aqueous stone
Black alkene electromagnetic screen coating component A；
(2) preparation method of component B: paint mixing kettle is added in solvent, dehydrating agent, stirs 30min under nitrogen protection.Isocyanide is added
Acid esters curing agent, stirs evenly, i.e. acquisition watersoluble plumbago alkene electromagnetic screen coating B component；
(3) by component A and component B in 100:(5~15) ratio be uniformly mixed, target product can be obtained.
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| CN111454641A (en) * | 2020-05-29 | 2020-07-28 | 南京长江涂料有限公司 | Aqueous single-component conductive coating for insulator and preparation method thereof |
| CN114226724A (en) * | 2021-12-22 | 2022-03-25 | 合肥工业大学 | Copper @ silver core-shell structure particle and related preparation method and application |
| CN115340823A (en) * | 2022-08-18 | 2022-11-15 | 东莞市樱之蓝新材料科技有限公司 | Odorless environment-friendly low-resistance water-based conductive paint and preparation method thereof |
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| CN114226724A (en) * | 2021-12-22 | 2022-03-25 | 合肥工业大学 | Copper @ silver core-shell structure particle and related preparation method and application |
| CN114226724B (en) * | 2021-12-22 | 2024-01-16 | 合肥工业大学 | Copper@silver core-shell structure particle and related preparation method and application |
| CN115340823A (en) * | 2022-08-18 | 2022-11-15 | 东莞市樱之蓝新材料科技有限公司 | Odorless environment-friendly low-resistance water-based conductive paint and preparation method thereof |
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