CN105802441B - A kind of watersoluble plumbago alkene composite coating, watersoluble plumbago alkene composite coating and preparation method thereof - Google Patents

A kind of watersoluble plumbago alkene composite coating, watersoluble plumbago alkene composite coating and preparation method thereof Download PDF

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CN105802441B
CN105802441B CN201410841675.9A CN201410841675A CN105802441B CN 105802441 B CN105802441 B CN 105802441B CN 201410841675 A CN201410841675 A CN 201410841675A CN 105802441 B CN105802441 B CN 105802441B
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water
graphene
composite coating
aniline
coating
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CN105802441A (en
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余海斌
刘栓
赵海超
顾林
戴雷
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Ningbo Institute of Material Technology and Engineering of CAS
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Ningbo Institute of Material Technology and Engineering of CAS
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Priority to EP15865917.7A priority patent/EP3228592A4/en
Priority to PCT/CN2015/095742 priority patent/WO2016086796A1/en
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Abstract

The present invention provides a kind of watersoluble plumbago alkene composite coatings, it is made of water-base resin, graphene, oligomer of phenylamine derivative, water and coating additive, mass percent shared by the graphene described in watersoluble plumbago alkene composite coating is 0.01%~4%, which is dispersed in the water-base resin and forming pi-pi bond with oligomer of phenylamine derivative.The present invention also provides a kind of preparation methods of watersoluble plumbago alkene composite coating and watersoluble plumbago alkene composite coating.

Description

A kind of watersoluble plumbago alkene composite coating, watersoluble plumbago alkene composite coating and its preparation Method
Technical field
The present invention relates to a kind of anticorrosive paint and corrosion-inhibiting coating more particularly to a kind of watersoluble plumbago alkene based on graphene are multiple Close coating, watersoluble plumbago alkene composite coating and preparation method thereof.
Background technique
Anticorrosive paint, etch-proof paint can be played the role of to metal etc. by referring to.Country was always right in recent years The ocean of the earth 7/10ths increases dynamics of investment, and anticorrosive paint has become the important fresh combatants of paint field, anticorrosive paint Increasing effect is played, development prospect is considerable.
Water paint refers to solvent of the water as coating.When in use, coating is dispersed in water with molecule aggregate, is relied on Molecule aggregate is mutually drawn close, interfacial molecular infiltration, and micel dimeric fusion ultimately forms coating after water volatilization.Aqueous painting Material uses water to be used as solvent due to not using organic solvent, thus it is more environmentally friendly and by public favor.
However, water paint is hardly formed homogeneity, the membrane structure of compact structure, to constrain the property of water paint Energy.Meanwhile in film forming procedure, since the residual of hydrophilic radical causes coating hydrophilic to improve, to steam diffusion barrier ability It reduces, coating moisture-resistant cementitiousness reduces.In addition to this, water-base resin is difficult to realize the height infiltration to filler and granules of pigments And dispersion, cause its hardly possible to form the anticorrosive paint of high quality.
Summary of the invention
In view of the deficiencies of the prior art, the main purpose of the present invention is to provide a kind of watersoluble plumbago alkene composite coatings, water Property graphene composite coating and preparation method thereof, graphene uniform is scattered in water-base resin in the watersoluble plumbago alkene composite coating In, made watersoluble plumbago alkene composite coating and the watersoluble plumbago that metallic matrix binding force is big, organic volatile discharge is low, obtained Alkene composite coating has good moisture penetration and salt fog resistance and stronger protective capacities, can be used as anticorrosive paint and answers For in the relatively harsh corrosive environment such as ship, bridge.
The present invention provides a kind of watersoluble plumbago alkene composite coating, derivative by water-base resin, graphene, oligomer of phenylamine Object, water and coating additive form, and mass percent shared by the graphene described in watersoluble plumbago alkene composite coating is 0.01% ~4%, which is dispersed in water and forming pi-pi bond with oligomer of phenylamine derivative.
Wherein, the mass ratio of the oligomer of phenylamine derivative and graphene is 1:10~10:1.
Wherein, the diameter of the graphene is 5 μm~50 μm.
Wherein, the oligomer of phenylamine derivative be the oligomer of phenylamine with functional group, the functional group include carboxyl, Alkyl, sulfonic group, phosphate, epoxy group, polyethylene group and/or polyvinyl alcohol group, the oligomer of phenylamine are benzene One of amine tripolymer, Tetraaniline, aniline pentamer, six aggressiveness of aniline or combination.
Wherein, the water-base resin is aqueous epoxy resins, water-based acrylic resin, waterborne polyurethane resin, aqueous third One of olefin(e) acid polyurethane resin and water-compatible amino resin or combination.
Wherein, the coating additive includes anti-settling agent, defoaming agent and levelling agent, the anti-settling agent be fumed silica, One of polyamide wax and organobentonite or combination, the defoaming agent are dimethicone, ether ester compound, modified mineral One of oil, polyoxyethanyl glycerin ether, small molecule metallorganic and silicon modified organic polymer or combination, the levelling agent For butyl glycol ether, cellaburate, polyacrylate, silicone oil, hydroxymethyl cellulose, polydimethylsiloxane, polymethyl-benzene One of radical siloxane and modified organic silicon compound or combination.
The present invention also provides a kind of preparation methods of watersoluble plumbago alkene composite coating comprising following steps: by equimolar The oligomer of phenylamine derivative and alkali of amount are dissolved in water, obtain mixture A;Graphene is added into the mixture A, makes aniline Oligomer derivative, which is uniformly mixed with graphene and forms pi-pi bond between oligomer of phenylamine derivative and graphene, obtains graphite Alkene dispersion liquid;One water-base resin is provided, the graphene dispersing solution is added into the water-base resin and is uniformly mixed, is mixed Close object B;Coating additive is added into the mixture B, obtains watersoluble plumbago alkene composite coating, wherein in the watersoluble plumbago Mass percent shared by graphene described in alkene composite coating is 0.01%~4%.
Wherein, the alkali is one of sodium hydroxide, triethylamine, potassium hydroxide and ammonium hydroxide.
The present invention also provides a kind of watersoluble plumbago alkene composite coatings, derivative by water-base resin, graphene, oligomer of phenylamine Object and coating additive composition, mass percent shared by the graphene described in watersoluble plumbago alkene composite coating is 0.01%~ 4%, which is dispersed in the water-base resin and forming pi-pi bond with oligomer of phenylamine derivative.
Wherein, mass percent shared by the water-base resin described in watersoluble plumbago alkene composite coating is 80%~95%, Mass percent shared by the oligomer of phenylamine derivative is 0.01%~5%, quality percentage shared by the coating additive Number is 1%~10%.
Compared to the prior art, it in watersoluble plumbago alkene composite coating provided by the invention, is passed through by the surface to graphene The modifying and decorating for crossing oligomer of phenylamine derivative greatly improves the dispersibility and chemical stability of graphene, so that the stone Black alkene is dispersed in the water-base resin, and graphene has good hydrophobic performance, therefore in application process, it can be effective Inhibit hydrone in the adsorption of the watersoluble plumbago alkene composite coating of formation.Meanwhile graphene has two-dimensional slice structure, Evenly dispersed in coating, after forming watersoluble plumbago alkene composite coating, graphene can be layering, and form fine and close isolation Layer, thus small molecule corrosive medium (hydrone, chloride ion etc.) is difficult to play object outstanding by this layer of fine and close isolation layer Manage insulating effect.That is, obtained watersoluble plumbago alkene composite coating have good resistant to water penetration and salt fog resistance and compared with Strong protective capacities, so that watersoluble plumbago alkene composite coating has excellent anti-corrosion effect.Also, the watersoluble plumbago alkene is compound Coating is free of organic solvent, organic volatile will not be brought to discharge, environmentally protective.The compound painting of watersoluble plumbago alkene provided by the invention The preparation method of material, is innovated by preparation process, can be obtained multiple with the preferably watersoluble plumbago alkene of dispersibility and chemical stability Coating is closed, preparation process is simple, and it is low in cost, it is conducive to industrialization.
Detailed description of the invention
Fig. 1 be graphene dispersing solution (right side) and untreated graphene described in embodiment 1 after water dispersion (left side) photograph Piece.
Fig. 2 is the transmission electron microscope photo of graphene dispersing solution described in embodiment 1.
Fig. 3 a is surface topography photo of the 1 aqueous epoxy resins coating of comparative example after salt mist experiment 500 hours.
Fig. 3 b is that surface topography of the resulting watersoluble plumbago alkene composite coating of embodiment 1 after salt mist experiment 500 hours shines Piece.
Fig. 4 is the resulting watersoluble plumbago alkene composite coating of embodiment 1 (corresponding b curve) and 1 aqueous epoxy resins of comparative example Coating (corresponding a curve) impregnated 48 hours in 3.5wt%NaCl solution after corrosion potential curve.
Fig. 5 a is that 1 aqueous epoxy resins coating of comparative example impregnates the resistance of the exchange in 48 hours in 3.5wt%NaCl solution The impedance complex plane figure of anti-spectrum.
Fig. 5 b is that 1 aqueous epoxy resins coating of comparative example impregnates the resistance of the exchange in 48 hours in 3.5wt%NaCl solution The Bode diagram of anti-spectrum.
Fig. 5 c is that the resulting watersoluble plumbago alkene composite coating of embodiment 1 impregnates in 48 hours in 3.5wt%NaCl solution Ac impedance spectroscopy impedance complex plane figure.
Fig. 5 d is that the resulting watersoluble plumbago alkene composite coating of embodiment 1 impregnates in 48 hours in 3.5wt%NaCl solution Ac impedance spectroscopy Bode diagram.
Fig. 6 is that the resulting watersoluble plumbago alkene composite coating of embodiment 1 (corresponding solid line) is applied with 1 aqueous epoxy resins of comparative example Layer (respective dashed) impregnates the polarization curve in 48 hours in 3.5wt%NaCl solution.
Fig. 7 is the resulting watersoluble plumbago alkene composite coating of embodiment 1 (corresponding b curve) and 1 aqueous epoxy resins of comparative example Coating (corresponding a curve) impregnates the lgQ in 48 hours in 3.5wt%NaCl solutionc-t1/2Curve and equation of linear regression (its In, QcFor the capacitor of coating, t is the testing time).
Fig. 8 a is the contact angle photo on the surface of 1 aqueous epoxy resins coating of comparative example.
Fig. 8 b is the contact angle photo on the surface of the resulting watersoluble plumbago alkene composite coating of embodiment 1.
Specific embodiment
Below with reference to attached drawing to watersoluble plumbago alkene composite coating provided by the invention, watersoluble plumbago alkene composite coating and its Preparation method is described further.
The embodiment of the present invention provides a kind of preparation method of watersoluble plumbago alkene composite coating.This method comprises the following steps:
Process (1): the oligomer of phenylamine derivative and alkali of equimolar amounts are dissolved in water, obtain mixture A.Add the mesh of alkali Be to enable oligomer of phenylamine derivative to be preferably dissolved in water.Adding equimolar amounts is to make oligomer of phenylamine derivant structure In the group of carboxylic acid or other acid that has can be with alkali complete neutralization.The alkali is sodium hydroxide, triethylamine, hydroxide One of potassium and ammonium hydroxide.
Oligomer of phenylamine derivative and alkali are dispersed in water, dissolve oligomer of phenylamine derivative sufficiently.The aniline Oligomer derivative is for graphene described in modification.The oligomer of phenylamine derivative is that the aniline with functional group is oligomeric Object, the functional group include carboxyl, alkyl, sulfonic group, phosphate, epoxy group, polyethylene group and/or polyvinyl alcohol based Group.Preferably, the oligomer of phenylamine is one of aniline tripolymer, Tetraaniline, aniline pentamer, six aggressiveness of aniline Or combination.
Described oligomer of phenylamine or derivatives thereof can have the following structure formula:
(M is mainly sodium ion, potassium ion, quaternary ammonium salt etc.).
Process (2): graphene is added in the mixture A, is uniformly mixed oligomer of phenylamine derivative with graphene And pi-pi bond is formed between oligomer of phenylamine derivative and graphene and obtains graphene dispersing solution.Specifically, due to the aniline Phenyl ring and graphene-structured in oligomer derivative is close, thus the oligomer of phenylamine derivative can between graphene shape It realizes at pi-pi bond and is mixed with graphene uniform.It should be pointed out that utilizing shape between oligomer of phenylamine derivative and graphene At pi-pi bond, this mode is different from grafting modification, the structure of graphene itself is not destroyed, also different from physical The macromolecule of coated graphite alkene does not sacrifice the performance of graphene.That is, being changed by oligomer of phenylamine Derivatives Modified Property graphene, only make the dispersibility of graphene and stability more preferable, and do not destroy the structure of graphene, also do not reduce graphite The original performance of alkene.
It is appreciated that graphene uniform can be made to disperse by the dispersing method of high-speed stirred, ultrasound, ball milling and/or sand milling, It is uniformly mixed graphene with oligomer of phenylamine derivative.
The graphene includes graphene nanometer sheet, graphene micron film, graphene nanobelt, few layer graphene (2-5 Layer), multi-layer graphene (2-9 layers), graphene quantum dot and these graphite alkenes materials derivative).The graphene material The definition of material can be found in document " All in the graphene family-A recommended nomenclature for two-dimensional carbon materials".The grapheme material is also selected from thickness≤20nm, more preferably Ground, thickness≤10nm material.In the present embodiment, the grapheme material thickness preferably≤3nm, grapheme material is thinner, Flexibility is better, is more easily worked.The preparation method of the grapheme material is unlimited, and use is well known to those skilled in the art Graphene product is prepared with conventional preparation method.The limited public affairs of the preferred Ningbo Mo Xi science and technology of grapheme material of the invention The graphene product provided is provided.Grapheme material can selected from chemical oxidization method such as Brodie method, Hummers method or The graphene oxide of any one method preparation in Staudenmaier method is thermally expanded grapheme material obtained.It can also be with Select the grapheme material of mechanical stripping, liquid phase removing or electrochemical stripping preparation.The diameter of the graphene is 5 μm~50 μ m。
The mass ratio of the oligomer of phenylamine derivative and graphene is 1:10~10:1.Preferably, the aniline is oligomeric The mass ratio of object derivative and graphene is 2:1~1:1.
Process (3): providing a water-base resin, and the graphene dispersing solution is added into the water-base resin and mixes equal It is even, obtain mixture B.Graphene dispersing solution can be kept uniform by the dispersing method of high-speed stirred, ultrasound, ball milling and/or sand milling It is scattered in water-base resin, is further scattered in graphene uniform in water-base resin.The water-base resin is water-base epoxy tree One of rouge, water-based acrylic resin, waterborne polyurethane resin, aqueous acrylic urethane resins and water-compatible amino resin or Combination.
Process (4): being added coating additive into the mixture B, obtains watersoluble plumbago alkene composite coating.The coating helps Agent includes anti-settling agent, defoaming agent and levelling agent.The anti-settling agent is in fumed silica, polyamide wax and organobentonite A kind of or combination.The defoaming agent is dimethicone, ether ester compound, modified mineral oil, polyoxyethanyl glycerin ether, small molecule One of metallorganic and silicon modified organic polymer or combination.The levelling agent be butyl glycol ether, cellaburate, Polyacrylate, silicone oil, hydroxymethyl cellulose, polydimethylsiloxane, polymethylphenylsiloxane and modified organic silicon chemical combination One of object or combination.It is appreciated that the watersoluble plumbago alkene composite coating may also include curing agent.The curing agent can be Aqueous polyamide, for accelerating the watersoluble plumbago alkene composite coating solidification process.
Mass percent shared by graphene described in obtained watersoluble plumbago alkene composite coating is 0.01%~4%, excellent It is selected as, 0.2%~1.0%.
The present invention also provides a kind of watersoluble plumbago alkene composite coatings prepared using the above method.The watersoluble plumbago alkene is compound Coating is made of water-base resin, graphene, oligomer of phenylamine derivative, water and coating additive.In watersoluble plumbago alkene composite coating Described in mass percent shared by graphene be 0.01%~4%.Preferably, the institute in the watersoluble plumbago alkene composite coating Stating mass percent shared by graphene is 0.2%~1.0%.The graphene is by forming π-π with oligomer of phenylamine derivative Key and be dispersed in the water-base resin.
The present invention also provides a kind of obtained watersoluble plumbago alkene using the preparation of above-mentioned watersoluble plumbago alkene composite coating is compound Coating.Specifically, above-mentioned watersoluble plumbago alkene composite coating is coated on matrix by means such as blade coating, roller coating, to the water Property graphene composite coating in water volatilization after form watersoluble plumbago alkene composite coating.The watersoluble plumbago alkene composite coating by Water-base resin, graphene, oligomer of phenylamine derivative and coating additive composition.The graphite described in watersoluble plumbago alkene composite coating Mass percent shared by alkene is 0.01%~4%.The graphene is uniform and forming pi-pi bond with oligomer of phenylamine derivative It is scattered in the water-base resin.Mass percent shared by the water-base resin described in watersoluble plumbago alkene composite coating is 80% ~95%, mass percent shared by the oligomer of phenylamine derivative is 0.01%~5%, matter shared by the coating additive Measuring percentage is 1%~10%.
It is derivative by oligomer of phenylamine by the surface to graphene in watersoluble plumbago alkene composite coating provided by the invention The modifying and decorating of object greatly improves the dispersibility and chemical stability of graphene, so that the graphene uniform is scattered in institute It states in water-base resin, and graphene has good hydrophobic performance, therefore in application process, hydrone can be effectively suppressed and formed Watersoluble plumbago alkene composite coating adsorption.Meanwhile graphene has two-dimensional slice structure, uniformly divides in coating It dissipating, after forming watersoluble plumbago alkene composite coating, graphene can be layering, fine and close isolation layer is formed, thus small molecule is rotten Erosion medium (hydrone, chloride ion etc.) is difficult to play the role of physical isolation outstanding by this layer of fine and close isolation layer.That is, Obtained watersoluble plumbago alkene composite coating has good resistant to water penetration and salt fog resistance and stronger protective capacities, from And watersoluble plumbago alkene composite coating has excellent anti-corrosion effect.Also, the watersoluble plumbago alkene composite coating is without organic molten Agent will not bring organic volatile to discharge, environmentally protective.The preparation method of watersoluble plumbago alkene composite coating provided by the invention, It is innovated by preparation process, can obtain preparing work with the watersoluble plumbago alkene composite coating of preferably dispersibility and chemical stability Skill is simple, low in cost, is conducive to industrialization.
To further describe the present invention, here is the watersoluble plumbago alkene composite coating, watersoluble plumbago alkene composite coating Preparation method, the specific embodiment under different parameters:
Embodiment 1:
It weighs aniline tripolymer 1.24g to be dissolved in 50ml THF, adds 1.04g succinic anhydride, react 3 hours, use stone Oily ether precipitating, obtains aniline tripolymer carboxy derivatives.
It weighs 2.0g aniline tripolymer carboxy derivatives and 0.33g NaOH solid is dissolved in 10mL water, obtain mixture A. 2g graphene (being purchased from Ningbo Mo Xi Science and Technology Ltd.) is added into the mixture A, ultrasonic disperse 1 hour, obtains graphite Alkene dispersion liquid.Content of the graphene after the modification of aniline tripolymer carboxy derivatives in water reaches 0.2g/mL.The graphene Dispersion liquid and contrast effect of the untreated graphene after water dispersion are shown in Fig. 1.The electronic transmission of the graphene dispersing solution Electromicroscopic photograph is shown in Fig. 2.By Fig. 1 and Fig. 2 as it can be seen that graphene can be dispersed in after the modification of aniline tripolymer carboxy derivatives In water, graphene structure in the form of sheets in the graphene dispersing solution.
The graphene dispersing solution is added in 45g aqueous epoxy resins (purchased from North West Yongxin Group Co., Ltd.), and It is uniformly mixed, obtains mixture B.Sequentially added into the mixture B 1g levelling agent, 2g defoaming agent, 2.67g anti-settling agent and 45g aqueous polyamide curing agent stirs evenly to get watersoluble plumbago alkene composite coating is arrived.
Obtained watersoluble plumbago alkene composite coating is coated on a plain steel, after water volatilization, obtains watersoluble plumbago Alkene composite coating.
For comparative experiments effect, it is also prepared for 1 aqueous epoxy resins coating of comparative example.Aqueous ring described in comparative example 1 The preparation method is the same as that of Example 1 for oxygen resinous coat, unlike, graphene dispersing solution is not added.
Salt tolerant is carried out to the aqueous epoxy resins coating of watersoluble plumbago alkene composite coating described in embodiment 1 and comparative example 1 The test of mist performance.Specifically, the watersoluble plumbago alkene composite coating and 1 aqueous epoxy resins coating of comparative example are respectively placed in It in salt spray test chamber, takes out, and is taken pictures after being dried at room temperature for (see Fig. 3 a and Fig. 3 b) after 500 hours.By Fig. 3 a and figure 3b is as it can be seen that the surface of aqueous epoxy resins coating has apparent etch pit to occur, and the surface of watersoluble plumbago alkene composite coating does not have There is apparent corrosion phenomenon.
Anti-corrosion is carried out to the aqueous epoxy resins coating of watersoluble plumbago alkene composite coating described in embodiment 1 and comparative example 1 The test of performance.Specifically, the aqueous epoxy resins coating of the watersoluble plumbago alkene composite coating and comparative example 1 is existed respectively It is impregnated in 3.5wt%NaCl solution (with simulated seawater) 8 days, uses Shanghai morning China CHI660E electrochemical workstation, then to open The effect machine of road current potential, AC impedance and dynamic potential polarization curve measuring technology analysis graphene to watersoluble plumbago alkene composite coating Reason.Specifically, platinum plate electrode is to electrode, and graphene applies using the saturated calomel electrode with Luggin capillary as reference electrode Layer/carbon steel electrode is working electrode, is impregnated after stablizing open circuit potential (OCP) in simulated seawater solution, with sine at OCP Wave disturbance amplitude 30mV, frequency range are that 100000Hz~0.01Hz carries out electrical impedance (EIS) scanning.The scanning speed of polarization curve Degree is 0.5mV/s, and scanning range is -200~200mV vs.OCP.Test OCP result is shown in Fig. 4, and results of AC impedance is shown in Fig. 5 a To Fig. 5 d, polarization curve result is shown in Fig. 6.By Fig. 4, Fig. 5 a to Fig. 5 d, Fig. 6 it is found that the watersoluble plumbago alkene composite coating compares ring The impedance of oxygen resinous coat is big;After impregnating 48 hours, the corrosion current density of watersoluble plumbago alkene composite coating is 130nA cm-2, and the corrosion current density of aqueous epoxy resins coating is 38nAcm-2.This explanation passes through oligomer of phenylamine derivative The graphene of modifying and decorating can be dispersed in water-base resin, the open circuit electricity of the watersoluble plumbago alkene composite coating obtained from Position is shuffled, and impedance increases, and corrosion current density reduces, and then substantially increases the anti-corrosive properties of watersoluble plumbago alkene composite coating Energy.
Water-fast infiltration is carried out to watersoluble plumbago alkene composite coating described in embodiment 1 and 1 aqueous epoxy resins coating of comparative example The test of permeability energy.Specifically, by being fitted to AC impedance, with lgQc(Qc is coating capacitor) is to t1/2Mapping, obtains To Fig. 7.By linear fit, the linear regression of aqueous epoxy resins coating and watersoluble plumbago alkene composite coating can be respectively obtained Equation, so the diffusion coefficient that aqueous epoxy resins coating and watersoluble plumbago alkene composite coating is calculated be respectively 5.56 × 10-9cm2/ h and 1.61 × 10-11cm2/h.This explanation can be uniform by the graphene of the modifying and decorating of oligomer of phenylamine derivative It is scattered in water-base resin, to slow down diffusion velocity of the hydrone in watersoluble plumbago alkene composite coating.
Contact angle is carried out to watersoluble plumbago alkene composite coating described in embodiment 1 and 1 aqueous epoxy resins coating of comparative example Test (see Fig. 8).As a result are as follows: the contact angle of the watersoluble plumbago alkene composite coating is 95.38 °;The aqueous epoxy resins The contact angle of coating is 87.32 °.This explanation can be dispersed in by the graphene of the modifying and decorating of oligomer of phenylamine derivative In water-base resin, so that the contact angle of the aqueous epoxy resins coating be made to increase, and then the aqueous epoxy resins are increased The hydrophobic performance of coating.
Embodiment 2:
It weighs the made aniline tripolymer carboxy derivatives of 1.5g embodiment and 0.33g NaOH solid is dissolved in 10mL water, Obtain mixture A.1.5g graphene is added into the mixture A, ultrasonic disperse 1 hour, obtains graphene dispersing solution.Graphite Content of the alkene after the modification of aniline tripolymer carboxy derivatives in water reaches 0.15g/mL.
The graphene dispersing solution is added in 92g waterborne polyurethane resin (purchased from North West Yongxin Group Co., Ltd.), And be uniformly mixed, obtain mixture B.1.67g levelling agent, 1g defoaming agent, 2g anti-settling agent are sequentially added into the mixture B, It stirs evenly to get watersoluble plumbago alkene composite coating is arrived.
Embodiment 3:
It weighs the made aniline tripolymer carboxy derivatives of 2g embodiment 1 and 0.33g NaOH solid is dissolved in 10mL water, Obtain mixture A.2g graphene is added into the mixture A, ultrasonic disperse 1 hour, obtains graphene dispersing solution.Graphene Content after the modification of aniline tripolymer carboxy derivatives in water reaches 0.2g/mL.
The graphene dispersing solution is added in 91g water-based acrylic resin (limited purchased from Shandong Weifang Fuller new material Company), and be uniformly mixed, obtain mixture B.It is anti-that 1.67g levelling agent, 2g defoaming agent, 2g are sequentially added into the mixture B Heavy agent, stirs evenly, that is, arrives watersoluble plumbago alkene composite coating.
The above description of the embodiment is only used to help understand the method for the present invention and its core ideas.It should be pointed out that pair For those skilled in the art, without departing from the principle of the present invention, the present invention can also be carried out Some improvements and modifications, these improvements and modifications also fall within the scope of protection of the claims of the present invention.To these embodiments A variety of modifications are it will be apparent that the general principles defined herein can be not for those skilled in the art It is realized in other embodiments in the case where being detached from the spirit or scope of the present invention.Therefore, the present invention is not intended to be limited to this These embodiments shown in text, and it is to fit to the widest scope consistent with the principles and novel features disclosed herein.

Claims (9)

1.一种水性石墨烯复合涂料,其特征在于,其由水性树脂、石墨烯、苯胺低聚物衍生物、水及涂料助剂组成,在水性石墨烯复合涂料中所述石墨烯所占的质量百分数为0.01%~4%,该石墨烯通过与苯胺低聚物衍生物形成π-π键而均匀分散于水中,所述苯胺低聚物衍生物为带有功能团的苯胺低聚物;1. a water-based graphene composite coating, is characterized in that, it is made up of water-based resin, graphene, aniline oligomer derivative, water and coating auxiliary agent, in the water-based graphene composite coating, the amount of graphene that is occupied. The mass percentage is 0.01% to 4%, and the graphene is uniformly dispersed in water by forming a π-π bond with an aniline oligomer derivative, and the aniline oligomer derivative is an aniline oligomer with functional groups; 所述水性石墨烯复合涂料通过以下步骤制得:The water-based graphene composite coating is prepared by the following steps: 将等摩尔量的苯胺低聚物衍生物和碱溶解于水,得到混合物A;Dissolve equimolar amounts of oligoaniline derivative and alkali in water to obtain mixture A; 向所述混合物A中加入石墨烯,使苯胺低聚物衍生物与石墨烯混合均匀并在苯胺低聚物衍生物与石墨烯之间形成π-π键得到石墨烯分散液,所述苯胺低聚物衍生物为带有功能团的苯胺低聚物;Graphene is added to the mixture A, the aniline oligomer derivative and the graphene are mixed uniformly, and a π-π bond is formed between the aniline oligomer derivative and the graphene to obtain a graphene dispersion, and the aniline low The polymer derivatives are aniline oligomers with functional groups; 提供一水性树脂,向所述水性树脂中加入所述石墨烯分散液并混合均匀,得到混合物B;A water-based resin is provided, and the graphene dispersion is added to the water-based resin and mixed to obtain a mixture B; 向所述混合物B中加入涂料助剂,得到水性石墨烯复合涂料。A coating additive is added to the mixture B to obtain an aqueous graphene composite coating. 2.根据权利要求1所述水性石墨烯复合涂料,其特征在于,所述苯胺低聚物衍生物与石墨烯的质量比为1:10~10:1。2 . The water-based graphene composite coating according to claim 1 , wherein the mass ratio of the aniline oligomer derivative to graphene is 1:10 to 10:1. 3 . 3.根据权利要求1所述水性石墨烯复合涂料,其特征在于,所述石墨烯的直径为5μm~50μm。3 . The water-based graphene composite coating according to claim 1 , wherein the graphene has a diameter of 5 μm˜50 μm. 4 . 4.根据权利要求1所述水性石墨烯复合涂料,其特征在于,所述功能团包括羧基、烷基、磺酸基、磷酸基、环氧基团、聚乙二醇基团和/或聚乙烯醇基团,所述苯胺低聚物为苯胺三聚体、苯胺四聚体、苯胺五聚体、苯胺六聚体中的一种或组合。4. water-based graphene composite coating according to claim 1, is characterized in that, described functional group comprises carboxyl group, alkyl group, sulfonic acid group, phosphoric acid group, epoxy group, polyethylene glycol group and/or poly Vinyl alcohol group, the aniline oligomer is one or a combination of aniline trimer, aniline tetramer, aniline pentamer, and aniline hexamer. 5.根据权利要求1所述水性石墨烯复合涂料,其特征在于,所述水性树脂为水性环氧树脂、水性丙烯酸树脂、水性聚氨酯树脂、水性丙烯酸聚氨酯树脂和水性氨基树脂中的一种或组合。5. water-based graphene composite coating according to claim 1, is characterized in that, described water-based resin is one or the combination in water-based epoxy resin, water-based acrylic resin, water-based polyurethane resin, water-based acrylic polyurethane resin and water-based amino resin . 6.根据权利要求1所述水性石墨烯复合涂料,其特征在于,所述涂料助剂包括防沉剂、消泡剂和流平剂,所述防沉剂为气相二氧化硅、聚酰胺蜡和有机膨润土中的一种或组合,所述消泡剂为二甲基硅油、醚酯化合物、改性矿物油、聚氧乙基甘油醚、小分子金属有机物和改性有机硅聚合物中的一种或组合,所述流平剂为乙二醇丁醚、醋丁纤维素、聚丙烯酸酯类、硅油、羟甲基纤维素、聚二甲基硅烷、聚甲基苯基硅氧烷和改性有机硅化合物中的一种或组合。6. water-based graphene composite coating according to claim 1, is characterized in that, described coating auxiliary agent comprises anti-settling agent, defoamer and leveling agent, and described anti-settling agent is fumed silica, polyamide wax And one or a combination of organic bentonite, the defoamer is dimethyl silicone oil, ether ester compound, modified mineral oil, polyoxyethyl glyceryl ether, small molecular metal organic matter and modified organosilicon polymer. One or a combination, the leveling agent is ethylene glycol butyl ether, butyl cellulose, polyacrylates, silicone oil, hydroxymethyl cellulose, polydimethylsilane, polymethylphenylsiloxane and One or a combination of modified organosilicon compounds. 7.根据权利要求1所述水性石墨烯复合涂料,其特征在于,所述碱为氢氧化钠、三乙胺、氢氧化钾和氨水中的一种。7. water-based graphene composite coating according to claim 1, is characterized in that, described alkali is a kind of sodium hydroxide, triethylamine, potassium hydroxide and ammoniacal liquor. 8.一种水性石墨烯复合涂层,其特征在于,其由水性树脂、石墨烯、苯胺低聚物衍生物及涂料助剂组成,所述苯胺低聚物衍生物为带有功能团的苯胺低聚物,在水性石墨烯复合涂层中所述石墨烯所占的质量百分数为0.01%~4%,该石墨烯通过与苯胺低聚物衍生物形成π-π键而均匀分散于所述水性树脂中。8. a water-based graphene composite coating, is characterized in that, it is made up of water-based resin, graphene, aniline oligomer derivative and coating auxiliary agent, and described aniline oligomer derivative is the aniline with functional group Oligomer, the mass percentage of the graphene in the aqueous graphene composite coating is 0.01% to 4%, and the graphene is uniformly dispersed in the said graphene by forming π-π bonds with aniline oligomer derivatives in water-based resins. 9.根据权利要求8所述水性石墨烯复合涂层,其特征在于,在水性石墨烯复合涂层中所述水性树脂所占的质量百分数为80%~95%,所述苯胺低聚物衍生物所占的质量百分数为0.01%~5%,所述涂料助剂所占的质量百分数为1%~10%。9. The water-based graphene composite coating according to claim 8, wherein the mass percentage of the water-based resin in the water-based graphene composite coating is 80% to 95%, and the aniline oligomer is derived from The mass percentage of the coating additives is 0.01%-5%, and the mass percentage of the coating additives is 1%-10%.
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