CN112126315A - Two-component water-based epoxy carbon-based coating and preparation method thereof - Google Patents
Two-component water-based epoxy carbon-based coating and preparation method thereof Download PDFInfo
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- CN112126315A CN112126315A CN202011031372.2A CN202011031372A CN112126315A CN 112126315 A CN112126315 A CN 112126315A CN 202011031372 A CN202011031372 A CN 202011031372A CN 112126315 A CN112126315 A CN 112126315A
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- C—CHEMISTRY; METALLURGY
- C09—DYES; PAINTS; POLISHES; NATURAL RESINS; ADHESIVES; COMPOSITIONS NOT OTHERWISE PROVIDED FOR; APPLICATIONS OF MATERIALS NOT OTHERWISE PROVIDED FOR
- C09D—COATING COMPOSITIONS, e.g. PAINTS, VARNISHES OR LACQUERS; FILLING PASTES; CHEMICAL PAINT OR INK REMOVERS; INKS; CORRECTING FLUIDS; WOODSTAINS; PASTES OR SOLIDS FOR COLOURING OR PRINTING; USE OF MATERIALS THEREFOR
- C09D163/00—Coating compositions based on epoxy resins; Coating compositions based on derivatives of epoxy resins
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- C—CHEMISTRY; METALLURGY
- C09—DYES; PAINTS; POLISHES; NATURAL RESINS; ADHESIVES; COMPOSITIONS NOT OTHERWISE PROVIDED FOR; APPLICATIONS OF MATERIALS NOT OTHERWISE PROVIDED FOR
- C09D—COATING COMPOSITIONS, e.g. PAINTS, VARNISHES OR LACQUERS; FILLING PASTES; CHEMICAL PAINT OR INK REMOVERS; INKS; CORRECTING FLUIDS; WOODSTAINS; PASTES OR SOLIDS FOR COLOURING OR PRINTING; USE OF MATERIALS THEREFOR
- C09D5/00—Coating compositions, e.g. paints, varnishes or lacquers, characterised by their physical nature or the effects produced; Filling pastes
- C09D5/08—Anti-corrosive paints
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- C—CHEMISTRY; METALLURGY
- C09—DYES; PAINTS; POLISHES; NATURAL RESINS; ADHESIVES; COMPOSITIONS NOT OTHERWISE PROVIDED FOR; APPLICATIONS OF MATERIALS NOT OTHERWISE PROVIDED FOR
- C09D—COATING COMPOSITIONS, e.g. PAINTS, VARNISHES OR LACQUERS; FILLING PASTES; CHEMICAL PAINT OR INK REMOVERS; INKS; CORRECTING FLUIDS; WOODSTAINS; PASTES OR SOLIDS FOR COLOURING OR PRINTING; USE OF MATERIALS THEREFOR
- C09D7/00—Features of coating compositions, not provided for in group C09D5/00; Processes for incorporating ingredients in coating compositions
- C09D7/40—Additives
- C09D7/60—Additives non-macromolecular
- C09D7/61—Additives non-macromolecular inorganic
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- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08K—Use of inorganic or non-macromolecular organic substances as compounding ingredients
- C08K3/00—Use of inorganic substances as compounding ingredients
- C08K3/18—Oxygen-containing compounds, e.g. metal carbonyls
- C08K3/20—Oxides; Hydroxides
- C08K3/22—Oxides; Hydroxides of metals
- C08K2003/2265—Oxides; Hydroxides of metals of iron
- C08K2003/2272—Ferric oxide (Fe2O3)
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- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08K—Use of inorganic or non-macromolecular organic substances as compounding ingredients
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- C08K2003/3045—Sulfates
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- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08K—Use of inorganic or non-macromolecular organic substances as compounding ingredients
- C08K3/00—Use of inorganic substances as compounding ingredients
- C08K3/32—Phosphorus-containing compounds
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Abstract
A bi-component water-based epoxy carbon-based coating and a preparation method thereof. The application belongs to the technical field of coatings, and particularly relates to a two-component coating and a preparation method thereof. The raw materials for preparing the two-component coating comprise a component A and a component B; the raw materials of the component A comprise: emulsified asphalt, epoxy resin, coumarone resin, a carbon material, a filler and deionized water; the raw material of the component B is an epoxy curing agent; the particle size of the emulsified asphalt D50 is <3 microns. The coating prepared by the method has high adhesion to the base material, enhances the permeability of the base material, forms a compact protective film on the surface of the base material, and isolates the entry of water vapor and corrosive media, so that the corrosion resistance of the coating is greatly improved; and the small-particle-size emulsified asphalt and the carbon material are added in the preparation process of the coating to act together, so that the problem of overlarge viscosity of the coating can be solved, the thickness of a hydration layer is reduced, and the coating with the best adhesive force effect is obtained.
Description
Technical Field
The application belongs to the technical field of coatings, and particularly relates to a two-component water-based epoxy carbon-based coating and a preparation method thereof.
Background
As an important industrial coating, the epoxy coating is more and more widely applied to the industries such as railway construction, petroleum pipelines, automobile manufacturing and the like. In order to improve the adhesion and corrosion resistance of epoxy coatings, two-component coatings have been the direction of efforts of researchers.
"research on preparation process of third-generation bi-component water-based epoxy coating" (Zhou afterwei, 2016, 1 month, 31, 01 st period, Chinese coating), discloses a preparation method of water-based iron brown primer for railway freight cars, which is a research result of water-based epoxy coating; the invention patent application with the application number of CN 107312457A discloses a water-based double-component coal asphalt anticorrosive paint and a preparation method thereof, the scheme is also a double-component paint with better water solubility, and the anticorrosive property of the paint is improved by utilizing the effects of coal asphalt, SBS modifier, water-based epoxy resin and organic silicon modified acrylic resin.
The water-based double-component coal tar pitch coating disclosed in the prior stage tries to improve the water-based problem of the pitch in the coating through the modified coal tar pitch, thereby improving the anti-corrosion performance of the coating. The invention patent application with the application number of CN 107312457A discloses a water-based double-component coal asphalt anticorrosive paint and a preparation method thereof, the scheme utilizes the effects of coal asphalt, SBS modifier, water-based epoxy resin and organic silicon modified acrylic resin to improve the anticorrosive performance of the paint, but in the application, an anhydride curing agent is adopted, the paint can be slowly cured by heating during curing, and the anhydride can not directly react with an epoxy group to generate a chemical reaction, so the process is complex; the viscosity of the coating is increased by the emulsified asphalt added in the application, although the adhesive force is improved, the leveling property of the coating is poor in the using process, and the curing time is long; "third generation bi-component water-based epoxy paint preparation process research" (Zhou afterwei, 2016, 1 month, 31, 01 st period, Chinese paint), discloses a preparation method of water-based iron brown primer for railway freight car, which uses the action between water-based amine polymer and water-based epoxy emulsion to prepare water-based iron brown primer, but no emulsified asphalt component exists in the scheme, and the adhesion of the prepared paint is not obviously improved. In the spraying process, all the later sprayed paint falls off from the primer because the adhesive force of the primer on the surfaces of metal and the like is poor, and the paint is wasted due to the continuous spraying, so that the cost is increased.
Disclosure of Invention
In order to solve the technical problems, the invention provides a two-component water-based epoxy carbon-based coating, which is prepared from a raw material comprising a component A and a component B; the raw materials of the component A comprise: emulsified asphalt, epoxy resin, coumarone resin, a carbon material, a filler and deionized water; the raw material of the component B is an epoxy curing agent; the particle size of the emulsified asphalt D50 is <3 microns.
As a preferable technical scheme, the component A comprises the following raw materials in parts by weight: 10-30 parts of emulsified asphalt, 10-30 parts of epoxy resin, 1-5 parts of coumarone resin, 1-2 parts of carbon material, 10-15 parts of filler and 20-40 parts of deionized water; the component B comprises the following raw materials: 3.7-13.8 parts of epoxy curing agent.
As a preferred technical solution, the carbon material is at least one selected from graphene, carbon nanotubes and carbon fibers.
As a preferable technical scheme, the weight ratio of the graphene to the emulsified asphalt to the epoxy resin is 1: (5-30): (10-30).
As a preferable technical scheme, the weight ratio of the graphene to the emulsified asphalt to the epoxy resin is 1: (5-15): (20-30).
As a preferable technical scheme, the weight ratio of the graphene to the emulsified asphalt to the epoxy resin is 1: 10: 30.
as a preferable technical scheme, the particle size of the emulsified asphalt is D50<1 micron.
As a preferable technical scheme, the raw materials of the component A in the double-component water-based epoxy carbon-based coating also comprise a wetting agent, a defoaming agent, a leveling agent and an anti-settling agent.
As a preferable technical scheme, the filler is selected from one or more of iron oxide red, mica powder, precipitated barium sulfate, barite powder and phosphate antirust filler.
The second aspect of the invention provides a preparation method of a two-component waterborne epoxy-carbon-based coating, which comprises the following steps:
(1) adding epoxy resin, coumarone resin and carbon material into emulsified asphalt, stirring for 20-30 minutes, and dispersing at 600-800rpm for 10-30 minutes to obtain mixed emulsified asphalt;
(2) fully sanding the filler, adding the filler into the mixed emulsified asphalt, and then continuously dispersing for 10-20 minutes at 600-800 rpm;
(3) adding a wetting agent, a defoaming agent, a leveling agent, an anti-settling agent and deionized water into the step (2) to mix, and dispersing for 50-60 minutes at 500-600rpm to obtain a component A;
(4) and adding the epoxy curing agent of the component B into the component A, and stirring and mixing to obtain a uniform paint, namely the bi-component waterborne epoxy carbon-based paint.
Has the advantages that:
1. the coating prepared by the method has high adhesion to the base material, enhances the permeability of the base material, forms a compact protective film on the surface of the base material, and isolates the entry of water vapor and corrosive media, so that the corrosion resistance of the coating is greatly improved;
2. according to the application, the small-particle-size emulsified asphalt and the carbon material are added in the preparation process of the coating to act together, so that the problem of overlarge viscosity of the coating can be solved, the thickness of a hydration layer is reduced, and the coating with the best adhesive force effect is obtained.
Detailed Description
For purposes of the following detailed description, it is to be understood that the invention may assume various alternative variations and step sequences, except where expressly specified to the contrary. Moreover, other than in any operating examples, or where otherwise indicated, all numbers expressing, for example, quantities of ingredients used in the specification and claims are to be understood as being modified in all instances by the term "about". Accordingly, unless indicated to the contrary, the numerical parameters set forth in the following specification and attached claims are approximations that may vary depending upon the desired properties to be obtained by the present invention. At the very least, and not as an attempt to limit the application of the doctrine of equivalents to the scope of the claims, each numerical parameter should at least be construed in light of the number of reported significant digits and by applying ordinary rounding techniques.
Notwithstanding that the numerical ranges and parameters setting forth the broad scope of the invention are approximations, the numerical values set forth in the specific examples are reported as precisely as possible. Any numerical value, however, inherently contains certain errors necessarily resulting from the standard deviation found in their respective testing measurements.
When a range of values is disclosed herein, the range is considered to be continuous and includes both the minimum and maximum values of the range, as well as each value between such minimum and maximum values. Further, when a range refers to an integer, each integer between the minimum and maximum values of the range is included. Further, when multiple range-describing features or characteristics are provided, the ranges may be combined. In other words, unless otherwise indicated, all ranges disclosed herein are to be understood to encompass any and all subranges subsumed therein. For example, a stated range from "1 to 10" should be considered to include any and all subranges between the minimum value of 1 and the maximum value of 10. Exemplary subranges of the range 1 to 10 include, but are not limited to, 1 to 6.1, 3.5 to 7.8, 5.5 to 10, and the like.
In order to solve the problems, the invention provides a two-component water-based epoxy carbon-based coating, which is prepared from a raw material comprising a component A and a component B; the raw materials of the component A comprise: emulsified asphalt, epoxy resin, coumarone resin, a carbon material, a filler and deionized water; the raw material of the component B is an epoxy curing agent; the particle size of the emulsified asphalt D50 is <3 microns.
Preferably, the two-component water-based epoxy carbon-based coating comprises the following raw materials in parts by weight: 10-30 parts of emulsified asphalt, 10-30 parts of epoxy resin, 1-5 parts of coumarone resin, 1-2 parts of carbon material, 10-15 parts of filler and 20-40 parts of deionized water; the component B comprises the following raw materials: 3.7-13.8 parts of epoxy curing agent.
As a preferred technical solution, the carbon material is at least one selected from graphene, carbon nanotubes and carbon fibers.
Preferably, the carbon material is graphene.
Graphene, CAS number 1034343-98-0, available from jie, shanghai, to biochemical technologies, ltd; graphene is a monoatomic layer two-dimensional crystal with a scaly structure, and carbon atoms are regularly arranged in honeycomb lattice structure units. Besides being connected with three other carbon atoms by sigma bonds, the rest pi electrons form delocalized large pi bonds with the pi electrons of the other carbon atoms, and the electrons can freely move in the layer, so that the graphene has excellent conductivity.
As a preferable technical scheme, the weight ratio of the graphene to the emulsified asphalt to the epoxy resin is 1: (5-30): (10-30).
Preferably, the weight ratio of the graphene to the emulsified asphalt to the epoxy resin is 1: (5-15): (20-30).
More preferably, the weight ratio of the graphene to the emulsified asphalt to the epoxy resin is 1: 10: 30.
as a preferable technical scheme, the particle size of the emulsified asphalt is D50<1 micron.
The applicant finds that when the emulsified asphalt is crosslinked with the epoxy resin and the coumarone resin with the particle size of D50 less than 1 micron, the dispersibility and the permeability to a base material can be enhanced due to a larger specific surface area, but in the experimental process, when the emulsified asphalt is dissolved in a system, the problems of difficulty in controlling the thickness during coating construction, poor leveling property, long curing time, serious bubbles and the like are caused, and the using effect of the coating is seriously influenced.
In the application, the carbon material graphene is added to improve the conductivity of the paint; however, applicants have found that graphene, emulsified bitumen and epoxy resin are present in a weight ratio of 1: (5-15): (20-30) the problem of adhesion of the coating can be solved, and the presumption is that: when the graphene is dispersed in the whole system, part of the graphene enters the emulsified asphalt and the epoxy resin, so that the rigidity of a resin molecular chain is enhanced, the thickness of a water-bonding layer is reduced by the dispersibility of the graphene on the surfaces of the epoxy resin and the emulsified asphalt, and the adhesion capability and the corrosion prevention effect of the coating on the surface of a base material are improved while the conductivity of the coating is improved.
As a preferable technical scheme, the raw materials of the component A in the double-component water-based epoxy carbon-based coating also comprise a wetting agent, a defoaming agent, a leveling agent and an anti-settling agent.
As a preferable technical scheme, the filler is selected from one or more of iron oxide red, mica powder, precipitated barium sulfate, barite powder and phosphate antirust filler.
Preferably, the raw materials for preparing the two-component water-based epoxy carbon-based coating also comprise an anti-flash rust agent.
Preferably, the filler is selected from iron oxide red, mica powder, precipitated barium sulfate and zinc phosphate.
Iron oxide red (CAS number 1332-37-2), mica powder, precipitated barium sulfate (CAS number 7727-43-7), and zinc phosphate as used herein are commercially available from commercial suppliers including, but not limited to, Yino chemical company, Shanghai Botong chemical company, Bozhang chemical company, Guangdong Fushan, Hubei Xinrundi chemical company, Inc.
Iron oxide Red (CAS number 1332-37-2), purchased from Yino chemical Co., Guangzhou; mica powder, purchased from Shanghai Botong chemical Co., Ltd; precipitated barium sulfate (CAS number, 7727-43-7) purchased from Bozhuang chemical Co., Fushan, Guangdong; zinc phosphate was purchased from Hubei Xinrunde chemical Co., Ltd.
The wetting agent, the defoaming agent, the leveling agent and the anti-settling agent used in the process of preparing the double-component water-based epoxy-carbon-based coating are all commercial products, and the purchasing manufacturers include but are not limited to company of Digao, Yingchuang and the like.
In this application, wetting agent, type, TEGO Dispers 755W, purchased from winning official flagship stores; defoamer, model, TEGO FOAMEX 810, purchased at winning official flagship stores; leveling agent, model, SURFYNOL440, purchased from the winning official flagship; an anti-settling agent, model number, A200, purchased from Guangzhou Xianhui International trade Co., Ltd.
In another aspect of the present application, a method for preparing a two-component waterborne epoxy-carbon based coating is provided, comprising the steps of:
(1) adding epoxy resin, coumarone resin and carbon material into emulsified asphalt, stirring for 20-30 minutes, and dispersing at 600-800rpm for 10-30 minutes to obtain mixed emulsified asphalt;
(2) fully sanding the filler, adding the filler into the mixed emulsified asphalt, and then continuously dispersing for 10-20 minutes at 600-800 rpm;
(3) adding a wetting agent, a defoaming agent, a leveling agent, an anti-settling agent and deionized water into the step (2) to mix, and dispersing for 50-60 minutes at 500-600rpm to obtain a component A;
(4) and adding the epoxy curing agent of the component B into the component A, and stirring and mixing to obtain a uniform paint, namely the bi-component waterborne epoxy carbon-based paint.
It is noted that the two-component waterborne epoxy-carbon based coating mixes component A and component B during use.
Preferably, the preparation method of the emulsified asphalt refers to the patent publication CN 111205480A, and comprises the following steps:
the first step is as follows: adding asphalt into a reaction kettle, heating to 100 ℃, stirring and melting for 2 hours, sequentially adding an anionic emulsifier, a nonionic emulsifier, propylene glycol butyl ether and a self-made polymer, and stirring for 2 hours; the second step is that: cooling to 70 ℃, slowly dripping water, controlling the dripping time of the water to be 3 hours, and continuously stirring for 0.5 hour after the water is completely dripped, and discharging to obtain the product.
The preparation method of the self-made polymer comprises the following steps: 42 percent of polyol polymer is put into a reactor and heated to 80 ℃ for melting, after the polyol polymer is completely melted, the reactor is heated to 120 ℃ for vacuumizing for 2 hours, 40 percent of toluene diisocyanate and toluene-2, 4, 6-triyl triisocyanate (the weight ratio is 3: 1) are added, the polyurethane prepolymer is obtained after reaction for 3 hours at 80 ℃, 18 percent of hydroxyl resin and catalyst organotin (the adding amount of the catalyst is 0.3 percent of the total components of the polyol polymer, the isocyanate and the hydroxyl-containing resin) are added for reaction for 3 hours, and the self-made polymer is obtained.
Preferably, the epoxy resin, product name, EL-5320 water-based epoxy resin emulsion, product number 002, is purchased from Huaxia chemical materials Co., Ltd, Yixing city; coumarone resin, brand 14, available from hengyhao rubber chemical company ltd; epoxy hardener, product name, EX-4086 waterborne epoxy hardener, product number 013, available from Huaxia chemical materials Co., Ltd, Yixing City.
As a preferred technical solution, the weight ratio of the epoxy resin to the epoxy curing agent is 1: (0.1-1).
Applicants found that when the weight ratio of epoxy resin to epoxy curing agent is 1: (0.1-1), the epoxy curing agent can be well dissolved with the component A and plays a role in curing, and the amido in the epoxy curing agent and the epoxy group in the epoxy resin are chemically crosslinked and are quickly cured, so that the curing time of the two-component water-based epoxy carbon-based coating can be shortened; the applicant has also found that, surprisingly, when the weight ratio of epoxy resin to epoxy hardener is 1: (0.1-1), the service time of the two-component water-based epoxy carbon-based coating can be prolonged; because amino in the epoxy resin is mostly used for reacting with the epoxy resin, free active groups in the coating are reduced, so that the chemical stability of the coating is improved, and the service life of the coating is prolonged.
The present invention will be specifically described below by way of examples. It should be noted that the following examples are only for illustrating the present invention and should not be construed as limiting the scope of the present invention, and that the insubstantial modifications and adaptations of the present invention by those skilled in the art based on the above disclosure are still within the scope of the present invention.
In addition, the starting materials used are all commercially available, unless otherwise specified.
Examples
Example 1
A double-component water-based epoxy carbon-based coating is prepared from a component A and a component B; the component A comprises the following raw materials in parts by weight: 10 parts of emulsified asphalt, 30 parts of epoxy resin, 5 parts of coumarone resin, 1 part of carbon material graphene, 15 parts of filler (respectively: 2 parts of iron oxide red, 3 parts of mica powder, 5 parts of precipitated barium sulfate and 5 parts of zinc phosphate), 2 parts of wetting agent, 2 parts of defoaming agent, 2 parts of anti-settling agent and 40 parts of flatting agent, wherein the leveling agent is composed of deionized water and a solvent; the component B comprises the following raw materials: 13.8 parts of epoxy curing agent.
Particle size D50<1 micron for emulsified asphalt;
epoxy resin, product name, EL-5320 aqueous epoxy resin emulsion, product number 002, purchased from Huaxia chemical materials Co., Ltd, Yixing city; coumarone resin, brand 14, available from hengyhao rubber chemical company ltd; epoxy hardener, product name, EX-4086 waterborne epoxy hardener, product number 013, available from Huaxia chemical materials Co., Ltd, Yixing; graphene, CAS number 1034343-98-0, available from jie, shanghai, to biochemical technologies, inc.
Iron oxide Red (CAS number 1332-37-2), purchased from Yino chemical Co., Guangzhou; mica powder, purchased from Shanghai Botong chemical Co., Ltd; precipitated barium sulfate (CAS number, 7727-43-7) purchased from Bozhuang chemical Co., Fushan, Guangdong; zinc phosphate was purchased from Hubei Xinrunde chemical Co., Ltd.
Wetting agents, type, TEGO Dispers 755W, purchased at winning official flagship stores; defoamer, model, TEGO FOAMEX 810, purchased at winning official flagship stores; leveling agent, model, SURFYNOL440, purchased from the winning official flagship; an anti-settling agent, model number, A200, purchased from Guangzhou Xianhui International trade Co., Ltd.
The preparation method of the emulsified asphalt comprises the following steps:
the first step is as follows: adding 40 parts of asphalt into a reaction kettle, heating to 100 ℃, stirring and melting for 2 hours, sequentially adding 2 parts of anionic emulsifier, 2 parts of nonionic emulsifier, 4 parts of propylene glycol butyl ether and 3.5 parts of self-made polymer, and stirring for 2 hours;
the second step is that: and cooling to 70 ℃, slowly dripping 25 parts of water, controlling the dripping time of the water to be 3 hours, and continuously stirring for 0.5 hour after the water is completely dripped, and discharging to obtain the water-soluble glass.
In the first step, the stirring speed is 100-.
The anionic emulsifier is tall oil and sodium dodecyl benzene sulfonate; the weight ratio of the tall oil to the sodium dodecyl benzene sulfonate is 1: 5. the non-ionic emulsifier is castor oil polyoxyethylene (20) ether, purchased from chenchen taixin lanxing.
The preparation method of the self-made polymer comprises the following steps: 42 percent of polyol polymer (the model is PEG1500, the hydroxyl value is 68-83mgKOH/g, purchased from New Yinuxin Material Co., Ltd. of Qingdao) is put into a reactor and heated to 80 ℃ for melting, after the polyol polymer is completely melted, the temperature is raised to 120 ℃ for vacuumizing for 2 hours, 40 percent of toluene diisocyanate and toluene-2, 4, 6-triyl triisocyanate (the weight ratio is 3: 1) are added for reaction for 3 hours at 80 ℃ to obtain polyurethane prepolymer, 18 percent of epoxy resin E-51 and catalyst organotin (the addition of the catalyst is 0.3 percent by weight of all the components of the polyol polymer, the isocyanate and the hydroxyl-containing resin) are added for reaction for 3 hours to obtain the self-made polymer.
The preparation method of the two-component water-based epoxy carbon-based coating comprises the following steps: (1) taking 10 parts of emulsified asphalt, adding 30 parts of epoxy resin, 5 parts of coumarone resin and 1 part of graphene, stirring for 30 minutes, and then dispersing for 10 minutes at 800rpm to obtain mixed emulsified asphalt; (2) fully sanding 2 parts of iron oxide red, 3 parts of mica powder, 5 parts of precipitated barium sulfate and 5 parts of zinc phosphate filler, adding into the mixed emulsified asphalt, and then continuously dispersing at 800rpm for 20 minutes; (3) adding 2 parts of wetting agent, 2 parts of defoaming agent, 2 parts of anti-settling agent, 2 parts of flatting agent and 40 parts of deionized water into the step (2), mixing, and dispersing at 600rpm for 60 minutes to obtain a component A; (4) and 3.8 parts of the component B epoxy curing agent is added into the component A, and the mixture is stirred and mixed to obtain a uniform paint, namely the bi-component waterborne epoxy carbon-based paint.
Example 2
A double-component water-based epoxy carbon-based coating is prepared from a component A and a component B; the component A comprises the following raw materials in parts by weight: 10 parts of emulsified asphalt, 25 parts of epoxy resin, 5 parts of coumarone resin, 1 part of carbon material graphene, 15 parts of filler (respectively: 2 parts of iron oxide red, 3 parts of mica powder, 5 parts of precipitated barium sulfate and 5 parts of zinc phosphate), 2 parts of wetting agent, 2 parts of defoaming agent, 2 parts of anti-settling agent, 2 parts of flatting agent and 40 parts of deionized water; the component B comprises the following raw materials: and 11.5 parts of epoxy curing agent.
Particle size D50<1 micron for emulsified asphalt;
epoxy resin, product name, EL-5320 aqueous epoxy resin emulsion, product number 002, purchased from Huaxia chemical materials Co., Ltd, Yixing city; coumarone resin, brand 14, available from hengyhao rubber chemical company ltd; epoxy hardener, product name, EX-4086 waterborne epoxy hardener, product number 013, available from Huaxia chemical materials Co., Ltd, Yixing; graphene, CAS number 1034343-98-0, available from jie, shanghai, to biochemical technologies, inc.
Iron oxide Red (CAS number 1332-37-2), purchased from Yino chemical Co., Guangzhou; mica powder, purchased from Shanghai Botong chemical Co., Ltd; precipitated barium sulfate, purchased from bozhe chemical company, mountain, guangdong province; zinc phosphate was purchased from Hubei Xinrunde chemical Co., Ltd.
Wetting agents, type, TEGO Dispers 755W, purchased at winning official flagship stores; defoamer, model, TEGO FOAMEX 810, purchased at winning official flagship stores; leveling agent, model, SURFYNOL440, purchased from the winning official flagship; an anti-settling agent, model number, A200, purchased from Guangzhou Xianhui International trade Co., Ltd.
The emulsified asphalt was prepared by the method described in example 1.
The preparation of the home-made polymer is described in example 1.
Preparation of two-component waterborne epoxy-carbon based coating method reference is made to example 1.
Example 3
A double-component water-based epoxy carbon-based coating is prepared from a component A and a component B; the component A comprises the following raw materials in parts by weight: 10 parts of emulsified asphalt, 30 parts of epoxy resin, 5 parts of coumarone resin, 1 part of carbon material graphene, 15 parts of filler (respectively: 2 parts of iron oxide red, 3 parts of mica powder, 5 parts of precipitated barium sulfate and 5 parts of zinc phosphate), 2 parts of wetting agent, 2 parts of defoaming agent, 2 parts of anti-settling agent and 40 parts of flatting agent, wherein the leveling agent is composed of deionized water and a solvent; the component B comprises the following raw materials: 13.8 parts of epoxy curing agent.
Particle size D50<3 microns for emulsified asphalt;
epoxy resin, product name, EL-5320 aqueous epoxy resin emulsion, product number 002, purchased from Huaxia chemical materials Co., Ltd, Yixing city; coumarone resin, brand 14, available from hengyhao rubber chemical company ltd; epoxy hardener, product name, EX-4086 waterborne epoxy hardener, product number 013, available from Huaxia chemical materials Co., Ltd, Yixing; graphene, CAS number 1034343-98-0, available from jie, shanghai, to biochemical technologies, inc.
Iron oxide Red (CAS number 1332-37-2), purchased from Yino chemical Co., Guangzhou; mica powder, purchased from Shanghai Botong chemical Co., Ltd; precipitated barium sulfate (CAS number, 7727-43-7) purchased from Bozhuang chemical Co., Fushan, Guangdong; zinc phosphate was purchased from Hubei Xinrunde chemical Co., Ltd.
Wetting agents, type, TEGO Dispers 755W, purchased at winning official flagship stores; defoamer, model, TEGO FOAMEX 810, purchased at winning official flagship stores; leveling agent, model, SURFYNOL440, purchased from the winning official flagship; an anti-settling agent, model number, A200, purchased from Guangzhou Xianhui International trade Co., Ltd.
The emulsified asphalt was prepared by the method described in example 1.
The preparation of the home-made polymer is described in example 1.
Preparation of two-component waterborne epoxy-carbon based coating method reference is made to example 1.
Example 4
A double-component water-based epoxy carbon-based coating is prepared from a component A and a component B; the component A comprises the following raw materials in parts by weight: 20 parts of emulsified asphalt, 20 parts of epoxy resin, 5 parts of coumarone resin, 1 part of carbon material graphene, 15 parts of filler (respectively: 2 parts of iron oxide red, 3 parts of mica powder, 5 parts of precipitated barium sulfate and 5 parts of zinc phosphate), 2 parts of wetting agent, 2 parts of defoaming agent, 2 parts of anti-settling agent and 40 parts of flatting agent, wherein the leveling agent is 2 parts of deionized water; the component B comprises the following raw materials: 9.2 parts of epoxy curing agent.
Particle size D50<1 micron for emulsified asphalt;
epoxy resin, product name, EL-5320 aqueous epoxy resin emulsion, product number 002, purchased from Huaxia chemical materials Co., Ltd, Yixing city; coumarone resin, brand 14, available from hengyhao rubber chemical company ltd; epoxy hardener, product name, EX-4086 waterborne epoxy hardener, product number 013, available from Huaxia chemical materials Co., Ltd, Yixing; graphene, CAS number 1034343-98-0, available from jie, shanghai, to biochemical technologies, inc.
Iron oxide Red (CAS number 1332-37-2), purchased from Yino chemical Co., Guangzhou; mica powder, purchased from Shanghai Botong chemical Co., Ltd; precipitated barium sulfate (CAS number, 7727-43-7) purchased from Bozhuang chemical Co., Fushan, Guangdong; zinc phosphate was purchased from Hubei Xinrunde chemical Co., Ltd.
Wetting agents, type, TEGO Dispers 755W, purchased at winning official flagship stores; defoamer, model, TEGO FOAMEX 810, purchased at winning official flagship stores; leveling agent, model, SURFYNOL440, purchased from the winning official flagship; an anti-settling agent, model number, A200, purchased from Guangzhou Xianhui International trade Co., Ltd.
The emulsified asphalt was prepared by the method described in example 1.
The preparation of the home-made polymer is described in example 1.
Preparation of two-component waterborne epoxy-carbon based coating method reference is made to example 1.
Example 5
A double-component water-based epoxy carbon-based coating is prepared from a component A and a component B; the component A comprises the following raw materials in parts by weight: 10 parts of emulsified asphalt, 30 parts of epoxy resin, 5 parts of coumarone resin, 1 part of carbon material graphene, 15 parts of filler (respectively: 2 parts of iron oxide red, 3 parts of mica powder, 5 parts of precipitated barium sulfate and 5 parts of zinc phosphate), 2 parts of wetting agent, 2 parts of defoaming agent, 2 parts of anti-settling agent and 40 parts of flatting agent, wherein the leveling agent is composed of deionized water and a solvent; the component B comprises the following raw materials: 30 parts of epoxy curing agent.
Particle size D50<1 micron for emulsified asphalt;
epoxy resin, product name, EL-5320 aqueous epoxy resin emulsion, product number 002, purchased from Huaxia chemical materials Co., Ltd, Yixing city; coumarone resin, brand 14, available from hengyhao rubber chemical company ltd; epoxy hardener, product name, EX-4086 waterborne epoxy hardener, product number 013, available from Huaxia chemical materials Co., Ltd, Yixing; graphene, CAS number 1034343-98-0, available from jie, shanghai, to biochemical technologies, inc.
Iron oxide Red (CAS number 1332-37-2), purchased from Yino chemical Co., Guangzhou; mica powder, purchased from Shanghai Botong chemical Co., Ltd; precipitated barium sulfate (CAS number, 7727-43-7) purchased from Bozhuang chemical Co., Fushan, Guangdong; zinc phosphate was purchased from Hubei Xinrunde chemical Co., Ltd.
Wetting agents, type, TEGO Dispers 755W, purchased at winning official flagship stores; defoamer, model, TEGO FOAMEX 810, purchased at winning official flagship stores; leveling agent, model, SURFYNOL440, purchased from the winning official flagship; an anti-settling agent, model number, A200, purchased from Guangzhou Xianhui International trade Co., Ltd.
The emulsified asphalt was prepared by the method described in example 1.
The preparation of the home-made polymer is described in example 1.
Preparation of two-component waterborne epoxy-carbon based coating method reference is made to example 1.
Comparative example 1
A double-component water-based epoxy carbon-based coating is prepared from a component A and a component B; the component A comprises the following raw materials in parts by weight: 10 parts of emulsified asphalt, 30 parts of epoxy resin, 5 parts of coumarone resin, 1 part of carbon material graphene, 15 parts of filler (respectively: 2 parts of iron oxide red, 3 parts of mica powder, 5 parts of precipitated barium sulfate and 5 parts of zinc phosphate), 2 parts of wetting agent, 2 parts of defoaming agent, 2 parts of anti-settling agent and 40 parts of flatting agent, wherein the leveling agent is composed of deionized water and a solvent; the component B comprises the following raw materials: 13.8 parts of epoxy curing agent.
Particle size D50<10 microns for emulsified asphalt;
epoxy resin, product name, EL-5320 aqueous epoxy resin emulsion, product number 002, purchased from Huaxia chemical materials Co., Ltd, Yixing city; coumarone resin, brand 14, available from hengyhao rubber chemical company ltd; epoxy hardener, product name, EX-4086 waterborne epoxy hardener, product number 013, available from Huaxia chemical materials Co., Ltd, Yixing; graphene, CAS number 1034343-98-0, available from jie, shanghai, to biochemical technologies, inc.
Iron oxide Red (CAS number 1332-37-2), purchased from Yino chemical Co., Guangzhou; mica powder, purchased from Shanghai Botong chemical Co., Ltd; precipitated barium sulfate (CAS number, 7727-43-7) purchased from Bozhuang chemical Co., Fushan, Guangdong; zinc phosphate was purchased from Hubei Xinrunde chemical Co., Ltd.
Wetting agents, type, TEGO Dispers 755W, purchased at winning official flagship stores; defoamer, model, TEGO FOAMEX 810, purchased at winning official flagship stores; leveling agent, model, SURFYNOL440, purchased from the winning official flagship; an anti-settling agent, model number, A200, purchased from Guangzhou Xianhui International trade Co., Ltd.
The emulsified asphalt was prepared by the method described in example 1.
The preparation of the home-made polymer is described in example 1.
Preparation of two-component waterborne epoxy-carbon based coating method reference is made to example 1.
Comparative example 2
A double-component water-based epoxy carbon-based coating is prepared from a component A and a component B; the component A comprises the following raw materials in parts by weight: 10 parts of emulsified asphalt, 30 parts of epoxy resin, 5 parts of coumarone resin, 1 part of carbon material graphene oxide, 15 parts of filler (respectively: 2 parts of iron oxide red, 3 parts of mica powder, 5 parts of precipitated barium sulfate and 5 parts of zinc phosphate), 2 parts of wetting agent, 2 parts of defoaming agent, 2 parts of anti-settling agent and 40 parts of flatting agent, wherein the leveling agent is composed of deionized water and a solvent; the component B comprises the following raw materials: 13.8 parts of epoxy curing agent.
Particle size D50<1 micron for emulsified asphalt;
epoxy resin, product name, EL-5320 aqueous epoxy resin emulsion, product number 002, purchased from Huaxia chemical materials Co., Ltd, Yixing city; coumarone resin, brand 14, available from hengyhao rubber chemical company ltd; epoxy hardener, product name, EX-4086 waterborne epoxy hardener, product number 013, available from Huaxia chemical materials Co., Ltd, Yixing; graphene oxide, purchased from Shanghai Rich bed worker and trade Co.
Iron oxide Red (CAS number 1332-37-2), purchased from Yino chemical Co., Guangzhou; mica powder, purchased from Shanghai Botong chemical Co., Ltd; precipitated barium sulfate (CAS number, 7727-43-7) purchased from Bozhuang chemical Co., Fushan, Guangdong; zinc phosphate was purchased from Hubei Xinrunde chemical Co., Ltd.
Wetting agents, type, TEGO Dispers 755W, purchased at winning official flagship stores; defoamer, model, TEGO FOAMEX 810, purchased at winning official flagship stores; leveling agent, model, SURFYNOL440, purchased from the winning official flagship; an anti-settling agent, model number, A200, purchased from Guangzhou Xianhui International trade Co., Ltd.
The emulsified asphalt was prepared by the method described in example 1.
The preparation of the home-made polymer is described in example 1.
Preparation of two-component waterborne epoxy-carbon based coating method reference is made to example 1.
And (3) performance testing:
and (3) testing the adhesive force: the experimental results are counted in the following table according to the method of GB/T5210 coating adhesion determination;
and (3) testing water resistance: the experimental results are summarized in the following table with reference to GB/T1733 "determination of Water resistance of paint films";
and (3) testing acid and alkali resistance: the experimental results are counted in the following table according to GB/T1763 'determination method for chemical reagent resistance of paint film';
salt spray resistance test: the experimental results are counted in the following table according to GB/T1771 determination of neutral salt spray resistance of colored paint and varnish;
and (3) testing water soaking resistance: coating the coating on a coating forming die, cutting the coating by a slicer after the coating is cured, and ensuring that the coated size is (25 multiplied by 50 multiplied by 2.0) and the weight difference of each test piece is not more than 1 mg; weighing the test piece in the air, and recording the weight of the test piece at the moment as M1; soaking the test piece in water for 60 days; after the experiment is finished, rapidly and lightly wiping the water on the surface of the test piece by using clean fiber paper, sucking the water, weighing, and recording the mass M2; calculating the water absorption R according to a formula,
and the results are tabulated below.
According to the test results of the two-component waterborne epoxy carbon-based coating prepared by the embodiment and the comparative example, the two-component waterborne epoxy carbon-based coating prepared by the method has better adhesive force and corrosion resistance.
The above description is only a preferred embodiment of the present invention, and is not intended to limit the present invention in other forms, and any person skilled in the art may modify or change the technical content of the above disclosure into equivalent embodiments with equivalent changes, but all those simple modifications, equivalent changes and modifications made to the above embodiments according to the technical spirit of the present invention still belong to the protection scope of the present invention.
Claims (10)
1. The double-component water-based epoxy carbon-based coating is characterized in that the preparation raw material comprises a component A and a component B; the raw materials of the component A comprise: emulsified asphalt, epoxy resin, coumarone resin, a carbon material, a filler and deionized water; the raw material of the component B is an epoxy curing agent; the particle size of the emulsified asphalt D50 is <3 microns.
2. The two-component waterborne epoxy-carbon based coating according to claim 1, wherein the raw materials of component A comprise, in parts by weight: 10-30 parts of emulsified asphalt, 10-30 parts of epoxy resin, 1-5 parts of coumarone resin, 1-2 parts of carbon material, 10-15 parts of filler and 20-40 parts of deionized water; the component B comprises the following raw materials: 3.7-13.8 parts of epoxy curing agent.
3. The two-component waterborne epoxy-carbon-based coating according to claim 1, wherein the carbon material is at least one selected from the group consisting of graphene, carbon nanotubes, and carbon fibers.
4. The two-component waterborne epoxy-carbon-based coating according to claim 3, wherein the weight ratio of the graphene, the emulsified asphalt and the epoxy resin is 1: (5-30): (10-30).
5. The two-component waterborne epoxy-carbon-based coating according to claim 4, wherein the weight ratio of the graphene, the emulsified asphalt and the epoxy resin is 1: (5-15): (20-30).
6. The two-component waterborne epoxy-carbon-based coating according to claim 5, wherein the weight ratio of the graphene, the emulsified asphalt and the epoxy resin is 1: 10: 30.
7. the two-part waterborne epoxy-carbon based coating of claim 1, wherein the emulsified asphalt has a particle size of D50<1 μm.
8. The two-component aqueous epoxy-carbon-based paint according to claim 1, wherein the raw materials of component A in the two-component paint further comprise a wetting agent, an antifoaming agent, a leveling agent and an anti-settling agent.
9. The two-component aqueous epoxy-carbon-based paint according to claim 1, wherein the filler is one or more selected from iron oxide red, mica powder, precipitated barium sulfate, barite powder and phosphate-based antirust filler.
10. A method of preparing the two-part waterborne epoxy-carbon based coating of claim 9, comprising the steps of:
(1) adding epoxy resin, coumarone resin and carbon material into emulsified asphalt, stirring for 20-30 minutes, and dispersing at 600-800rpm for 10-30 minutes to obtain mixed emulsified asphalt;
(2) fully sanding the filler, adding the filler into the mixed emulsified asphalt, and then continuously dispersing for 10-20 minutes at 600-800 rpm;
(3) adding a wetting agent, a defoaming agent, a leveling agent, an anti-settling agent and deionized water into the step (2) to mix, and dispersing for 50-60 minutes at 500-600rpm to obtain a component A;
(4) and adding the epoxy curing agent of the component B into the component A, and stirring and mixing to obtain a uniform paint, namely the bi-component waterborne epoxy carbon-based paint.
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN116426218A (en) * | 2023-03-30 | 2023-07-14 | 铁科创恒新材料科技有限公司 | Water-based epoxy emulsified asphalt coating and preparation method thereof |
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| CN110551451A (en) * | 2019-08-13 | 2019-12-10 | 广州集泰化工股份有限公司 | Water-based bi-component epoxy asphalt coating and preparation method thereof |
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| CN1827718A (en) * | 2006-04-05 | 2006-09-06 | 中国人民解放军国防科学技术大学 | Environment-friendly acid-resistant anticorrosion paint |
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| CN116426218A (en) * | 2023-03-30 | 2023-07-14 | 铁科创恒新材料科技有限公司 | Water-based epoxy emulsified asphalt coating and preparation method thereof |
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Application publication date: 20201225 |