CN111303770B - Bio-based water-based anticorrosive conductive coating for bridge building protection and health monitoring and preparation method thereof - Google Patents
Bio-based water-based anticorrosive conductive coating for bridge building protection and health monitoring and preparation method thereof Download PDFInfo
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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
- C09D201/00—Coating compositions based on unspecified macromolecular compounds
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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
- C09D5/00—Coating compositions, e.g. paints, varnishes or lacquers, characterised by their physical nature or the effects produced; Filling pastes
- C09D5/24—Electrically-conducting 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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- 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
- C08K2201/00—Specific properties of additives
- C08K2201/001—Conductive additives
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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
- C08K2201/00—Specific properties of additives
- C08K2201/011—Nanostructured additives
Abstract
The invention discloses a bio-based waterborne anticorrosion force-sensitive conductive coating for bridge building protection and health monitoring, which comprises bio-based resin, an auxiliary agent, deionized water, a cosolvent, a pigment and a conductive filler, wherein the conductive filler can be nano carbon black, a carbon nano tube, Mxene, a silver nano wire or a nickel nano wire. The bio-based resin is used as a main film forming material, so that the production of the product prepared by the invention is green and environment-friendly and accords with sustainable development, and the conductive filler is added, so that the prepared bio-based water-based anticorrosion force-sensitive conductive coating has the anticorrosion property, and also has the conductivity and sensitive sensitivity, thereby being used for stress detection or bridge deformation detection.
Description
Technical Field
The invention relates to the technical field of coatings, in particular to a bio-based water-based anticorrosion force-sensitive conductive coating for bridge building protection and health monitoring.
Background
The service life of the bridge building is a great key problem influencing the safety of the bridge building. The key point is that the metal material and the structural member are influenced by environmental corrosion and stress damage in the using process. Therefore, in order to prolong the service life, it is important to monitor the corrosion protection and stress damage.
The corrosion of metal materials is mainly caused by electrochemical reaction between moisture in the air and oxygen, so that epoxy resin with good weather resistance, corrosion resistance, stability and mechanical property is often used as an anticorrosive coating to isolate moisture, oxygen and the like. Among them, water-soluble epoxy ester is the current focus of development. The epoxy ester is derived from petrochemical resources at present, and is not beneficial to environment and sustainable development. The method for preparing the bio-based water-soluble epoxy ester by extracting from renewable resources (wastes, crops and the like) is an environment-friendly, economic and efficient mode.
The stress and deformation conditions of the metal bridge and the structural member building need to be monitored in real time, nondestructively and remotely, so that the health condition of the metal bridge and the structural member building can be conveniently mastered. The key problem is the preparation of the force-sensitive sensing material and the installation and use of the force-sensitive sensing material in bridge construction. The polymer-based force-sensitive conductive composite material has the advantages of simple preparation, low cost, convenience in installation, accuracy in detection and the like.
Therefore, how to construct the bio-based anticorrosion force-sensitive conductive coating, realize the anticorrosion protection and the stress sensor, namely the health monitoring, and improve the service life of the metal bridge and the structural member is a difficult problem to be solved urgently.
Disclosure of Invention
The invention aims to solve the existing problems, and provides a bio-based water-based anticorrosion sensitive conductive coating for bridge building protection and health monitoring and a preparation method thereof, which can realize environmental protection and sustainable development and can be used for stress detection.
The technical solution of the invention is as follows:
a bio-based aqueous anticorrosion force-sensitive conductive coating for bridge building protection and health monitoring comprises a component A and a component B;
the component A comprises bio-based resin, an auxiliary agent, deionized water, a cosolvent and a pigment;
the component B is conductive filler which can be nano carbon black, a carbon nano tube, Mxene, a silver nano wire or a nickel nano wire.
Preferably, the auxiliary agent consists of a pH regulator, a drier, a dispersing agent, a defoaming agent, a wetting agent, a thickening agent, fumed silica and an anti-flash rust auxiliary agent;
the cosolvent is an ether cosolvent;
the pigment consists of precipitated barium sulfate, talcum powder and antirust pigment.
Preferably, the component A and the component B are prepared from the following raw materials in parts by weight:
a component
Bio-based resin: 20-25 parts;
pH regulator: 0.3-0.6 parts;
a drier: 0.3-0.4 parts;
dispersing agent: 0.2-0.3 parts;
defoaming agent: 0.08-0.1 part;
wetting agent: 0.1 to 0.3 parts;
fumed silica: 0.4-0.5 parts;
anti-flash rust additive: 0.4-0.5 parts;
cosolvent: 3-5 parts;
precipitating barium sulfate: 15-18 parts;
talc powder: 5-8 parts of a solvent;
deionized water: 28-37 parts;
thickening agent: 0.1 to 0.5 parts;
antirust pigment: 3-5 parts;
component B
Conductive filler: 8-15 parts.
Preferably, the steps are as follows:
s1, taking 8-15 parts of conductive filler for surface treatment;
s2, putting 10-13 parts of bio-based resin, 0.3-0.6 part of pH regulator, 3-5 parts of cosolvent and 0.3-0.4 part of drier into a dispersion tank in sequence for dispersion treatment to obtain a solution I;
s3, adding 9-13 parts of deionized water into the solution I prepared in the step S2, and performing dispersion treatment to obtain a solution II;
s4, taking 0.2-0.3 part of dispersing agent, 0.08-0.1 part of defoaming agent, 0.1-0.3 part of wetting agent, 15-18 parts of precipitated barium sulfate, 5-8 parts of talcum powder, 3-5 parts of antirust pigment, 0.4-0.5 part of fumed silica, 15-19 parts of deionized water, 0.4-0.5 part of anti-flash rust auxiliary agent, and taking 65-70% of conductive filler subjected to surface treatment in the step S1, respectively adding the conductive filler into the solution II prepared in the step S3, and performing dispersion treatment to obtain a solution III;
s5, putting the solution III obtained in the step S4 into a grinder for grinding treatment;
s6, putting the solution III which is ground in the step S5 into a dispersion cylinder again, mixing 10-12 parts of bio-based resin and 4-5 parts of deionized water to obtain a solution IV, flushing the grinding machine with the solution IV and recycling the solution IV into the dispersion cylinder to obtain a solution V;
s7, putting 30-35% of the conductive filler subjected to surface treatment in the step S1 and 0.1-0.5 part of thickening agent into the solution V for dispersion treatment, and completing preparation of the bio-based anticorrosive conductive coating.
Preferably, the conductive filler in step S1 is nano carbon black, carbon nanotube or Mxene, and the surface treatment step is performed as follows: dispersing a silane coupling agent in an ethanol aqueous solution to obtain a solution VI, and then putting a conductive filler into a dispersion cylinder containing the solution VI for dispersion treatment;
in the step S1, if the conductive filler is a silver nanowire or a nickel nanowire, the surface treatment step is as follows: firstly, mercaptan is dispersed in an ethanol water solution to obtain a solution VII, and then the conductive filler is placed in the solution VII for dispersion treatment.
Preferably, the time of the dispersing treatment in the step S2 is 5-6 minutes, and the dispersing speed is 400-600 r/min;
the time of the dispersing treatment in the step S3 is 5-6 minutes, and the dispersing speed is 400-600 r/min;
the time of the dispersing treatment in the step S4 is 18-22 minutes, and the dispersing speed is 600-800 r/min;
the time of the dispersion treatment in the step S7 is 5-6 minutes, and the dispersion speed is 400-600 r/min.
Preferably, the grinding treatment in the step S5 is to grind to the fineness of less than 30 microns, and the temperature during the grinding treatment is not more than 50 ℃.
Preferably, the conductive filler is nano carbon black, a carbon nano tube or Mxene, the dispersion treatment is firstly carried out for 18-22 min at 400-600 r/min, then the temperature is raised to 48-50 ℃, and the dispersion time is 28-30 min at 400-600 r/min;
the conductive filler is silver nanowires or nickel nanowires, and the dispersion treatment is firstly carried out for 18-22 min at 400-600 r/min, then the temperature is raised to 38-40 ℃, and the dispersion time is 28-30 min at 400-600 r/min.
The invention has the beneficial effects that:
1. the bio-based anticorrosive conductive coating disclosed by the invention adopts bio-based resin as a main film forming material, so that the production of the product prepared by the invention is green and environment-friendly and meets the sustainable development.
2. The conductive coating is added into the bio-based anticorrosive conductive coating, so that the bio-based anticorrosive conductive coating has the advantages of corrosion resistance, prolonged service life of a bridge, conductivity and sensitive sensing, and is used for stress detection or bridge deformation detection.
The specific implementation mode is as follows:
the technical solutions in the embodiments of the present invention will be clearly and completely described below, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.
As used herein, unless otherwise indicated, "a", "an", "the", "at least one", and "one or more" are used interchangeably herein, as well as where no numerical word is used. Thus, for example, a coating composition comprising "an" additive can be interpreted to mean that "one or more" additives are included in the coating composition. The use of a singular form herein is intended to include the plural form as well, unless the context clearly indicates otherwise.
Where a composition is described as including or comprising a particular component, optional components not contemplated by the present invention are not contemplated as being excluded from the composition and it is contemplated that the composition may consist of or consist of the recited component or where a method is described as including or comprising a particular process step, optional process steps not contemplated by the present invention are not contemplated as being excluded from the method and it is contemplated that the method may consist of or consist of the recited process step.
For the sake of brevity, only some numerical ranges are explicitly disclosed herein. However, any lower limit may be combined with any upper limit to form ranges not explicitly recited; and any lower limit may be combined with any other lower limit to form a range not explicitly recited, and similarly any upper limit may be combined with any other upper limit to form a range not explicitly recited. Also, although not explicitly recited, each point or individual value between endpoints of a range is encompassed within the range. Thus, each point or individual value can form a range not explicitly recited as its own lower or upper limit in combination with any other point or individual value or in combination with other lower or upper limits.
A bio-based aqueous anticorrosion force-sensitive conductive coating for bridge building protection and health monitoring comprises a component A and a component B;
the component A consists of bio-based resin, an auxiliary agent, deionized water, a cosolvent and a pigment;
the component B is conductive filler which can be nano carbon black, a carbon nano tube, Mxene, a silver nano wire or a nickel nano wire. Different conductive networks are constructed by regulating and controlling the consumption of the conductive filler, so that the uniformity of stress sensitivity and conductivity is realized.
Specifically, the bio-based resin is a waterborne epoxy ester based on bio-based materials, and the production and preparation method thereof is disclosed in patent document with patent application No. 201810587010.8 and patent name "a waterborne epoxy ester based on bio-based materials and preparation method thereof", and thus detailed description thereof is omitted.
Specifically, the auxiliary agent consists of a pH regulator, a drier, a dispersing agent, a defoaming agent, a thickening agent, a wetting agent, fumed silica and an anti-flash rust auxiliary agent;
the cosolvent is an ether cosolvent;
the pigment consists of precipitated barium sulfate, talcum powder and antirust pigment.
Specifically, the component A and the component B are prepared from the following raw materials in parts by weight:
a component
Bio-based resin: 20-25 parts;
pH regulator: 0.3-0.6 parts;
a drier: 0.3-0.4 parts;
dispersing agent: 0.2-0.3 parts;
defoaming agent: 0.08-0.1 part;
wetting agent: 0.1 to 0.3 parts;
fumed silica: 0.4-0.5 parts;
anti-flash rust additive: 0.4-0.5 parts;
cosolvent: 3-5 parts;
precipitating barium sulfate: 15-18 parts;
talc powder: 5-8 parts of a solvent;
deionized water: 28-37 parts;
thickening agent: 0.1 to 0.5 parts;
antirust pigment: 3-5 parts;
component B
Conductive filler: 8-15 parts.
Specifically, a preparation method of a bio-based water-based anticorrosion force-sensitive conductive coating for bridge building protection and health monitoring comprises the following steps:
s1, taking 8-15 parts of conductive filler for surface treatment;
s2, putting 10-13 parts of bio-based resin, 0.3-0.6 part of pH regulator, 3-5 parts of cosolvent and 0.3-0.4 part of drier into a dispersion cylinder in sequence for dispersion treatment, wherein the dispersion treatment time is 5-6 minutes and the speed is 400-600 r/min, and obtaining a solution I;
s3, adding 9-13 parts of deionized water into the solution I prepared in the step S2, and performing dispersion treatment, wherein the dispersion treatment time is 5-6 minutes, and the speed is 400-600 r/min, so as to obtain a solution II;
s4, taking 0.2-0.3 part of dispersing agent, 0.08-0.1 part of defoaming agent, 0.1-0.3 part of wetting agent, 15-18 parts of precipitated barium sulfate, 5-8 parts of talcum powder, 3-5 parts of antirust pigment, 0.4-0.5 part of fumed silica, 15-19 parts of deionized water and 0.4-0.5 part of anti-flash rust auxiliary agent, and respectively putting 65-70% of conductive filler subjected to surface treatment in the step S1 into the solution II prepared in the step S3 for dispersion treatment, wherein the dispersion treatment time is 18-22 minutes and the speed is 600-800 r/min, so as to obtain a solution III;
s5, putting the solution III obtained in the step S4 into a grinder for grinding until the fineness is less than 30 micrometers, wherein the temperature is not more than 50 ℃ in the grinding process, and the temperature of the system is controlled to be prevented from being too high, and partial auxiliary agents are volatilized too fast to influence the overall effect;
s6, putting the solution III which is ground in the step S5 into a dispersion cylinder again, mixing 10-12 parts of bio-based resin and 4-5 parts of deionized water to obtain a solution IV, flushing the grinding machine with the solution IV and recycling the solution IV into the dispersion cylinder to obtain a solution V;
and S7, putting 30-35% of the conductive filler subjected to surface treatment in the step S1 and 0.1-0.5 part of thickening agent into the solution V for dispersion treatment, wherein the dispersion treatment time is 5-6 minutes, the speed is 400-600 r/min, the viscosity is adjusted, the color meets the standard, and the preparation of the bio-based anticorrosion-force-sensitive conductive coating is completed.
Specifically, the bio-based resin is added in two steps, and the functions are as follows:
firstly, the method comprises the following steps: the production efficiency is improved, a part of the bio-based resin is added firstly, the time for mixing and dispersing the bio-based resin with other components is greatly shortened if the part of the bio-based resin is less by weight, the subsequent steps need to be dispersed originally, and the rest of the bio-based resin is added and dispersed with the subsequent steps, so that the production efficiency is improved.
Secondly, the method comprises the following steps: the cleaning is more thorough, and in the process of cleaning the grinding machine, part of substances are insoluble in deionized water, so that the biological-based resin is used for cleaning at the position, the utilization rate of raw materials is greatly improved, and waste is avoided.
Specifically, the conductive filler is added in two steps for the purpose of increasing dispersibility and improving conductivity because the conductive paint added in the first part is ground after being added. The second portion of the added conductive paint is ground to increase sensitivity.
Specifically, if the conductive filler in step S1 is carbon black, carbon nanotube or Mxene, the surface treatment step is: firstly dispersing a silane coupling agent in an ethanol aqueous solution according to the ratio of 1:10, wherein the ratio of ethanol to the aqueous solution of the ethanol aqueous solution is 1:10 to obtain a solution VI, then putting a conductive filler into a dispersion cylinder containing the solution VI, performing dispersion treatment at the speed of 400-600 r/min for 18-22 min, heating to 48-50 ℃, performing dispersion treatment at the speed of 400-600 r/min for 28-30 min, and heating to reduce the viscosity, thereby being beneficial to the dispersion of the conductive filler.
In the step S1, if the conductive filler is a silver nanowire or a nickel nanowire, the surface treatment step is as follows: firstly, mercaptan is dispersed in an ethanol aqueous solution according to the ratio of 1:10, the ratio of ethanol to the aqueous solution of the ethanol aqueous solution is 1:10, a solution VII is obtained, and then the conductive filler is placed in the solution VII for dispersion treatment. The dispersion treatment is to firstly carry out dispersion treatment for 18-22 min at 400-600 r/min, then heat up to 38-40 ℃, and the dispersion treatment is carried out for 28-30 min at 400-600 r/min.
Specifically, the silane coupling agent adopted by the invention is an aminosilane coupling agent, when the surface treatment is carried out, silane reacts with nano carbon black, carbon nano tubes or Mxene, and amino groups can react with epoxy groups to promote the interface reaction of the conductive filler and the matrix.
When the mercaptan is 2-aminoethanethiol and 2-aminothiophenol, sulfur of the mercaptan reacts with metal in the metal nanowire during surface treatment, and amino groups contained in the mercaptan can react with epoxy groups to promote interfacial reaction between the conductive filler and the matrix.
Specific examples are as follows:
the first embodiment is as follows:
the CM-3880 resin comprises the following components in parts by weight: 20 parts of (1);
pH regulator: 0.3 part;
CM-001 drier: 0.3 part;
490 dispersing agent: 0.3 part;
901 defoaming agent: 0.1 part;
348 wetting agents: 0.1 part;
fumed silica a 200: 0.5 part;
flash rust prevention assistant Rb 60: 0.4 part;
ethylene glycol butyl ether: 3 parts of a mixture;
precipitating barium sulfate: 15 parts of (1);
talc powder: 5 parts of a mixture;
deionized water: 36.7 parts of;
thickening agent: 0.3 part;
antirust pigment: 3 portions of
Nano carbon black or Mxene: 15 parts.
Example two:
the CM-3880 resin comprises the following components in parts by weight: 25 parts of (1);
pH regulator: 0.6 part;
CM-001 drier: 0.3 part;
490 dispersing agent: 0.3 part;
901 defoaming agent: 0.1 part;
348 wetting agents: 0.1 part;
fumed silica a 200: 0.5 part;
flash rust prevention assistant Rb 60: 0.4 part;
ethylene glycol butyl ether: 5 parts of a mixture;
precipitating barium sulfate: 17 parts of (1);
talc powder: 5 parts of a mixture;
deionized water: 31.4 parts;
thickening agent: 0.3 part;
antirust pigment: 4 portions of
Carbon nanotube: 10 parts of (A);
example three:
the CM-3880 resin comprises the following components in parts by weight: 25 parts of (1);
pH regulator: 0.6 part;
CM-001 drier: 0.3 part;
490 dispersing agent: 0.3 part;
901 defoaming agent: 0.1 part;
348 wetting agents: 0.1 part;
fumed silica a 200: 0.5 part;
flash rust prevention assistant Rb 60: 0.4 part;
ethylene glycol butyl ether: 5 parts of a mixture;
precipitating barium sulfate: 17 parts of (1);
talc powder: 8 parts of a mixture;
deionized water: 29.4 parts;
thickening agent: 0.3 part;
antirust pigment: 5 parts of a mixture;
silver nanowires or nickel nanowires: 8 parts.
The bio-based anticorrosion-force sensitive conductive coating obtained in the first embodiment is black;
the bio-based anticorrosion-force sensitive conductive coating obtained in the second embodiment is black;
the bio-based anticorrosive-force-sensitive conductive coating obtained in example three is gray;
the cost of the nano carbon black, the carbon nano tube or the Mxene is lower than that of the silver nanowire or the nickel nanowire, so the price of the obtained bio-based anticorrosion-force-sensitive conductive coating is higher in the third embodiment than in the first embodiment and the second embodiment.
The index data of the first embodiment, the second embodiment and the third embodiment about conductivity, sensitivity and corrosion prevention effect are as follows:
the above description is only a preferred embodiment of the present invention, and all other embodiments obtained by those skilled in the art without any inventive work shall fall within the scope of the present invention.
Claims (5)
1. A bio-based water-based anticorrosion force-sensitive conductive coating for bridge building protection and health monitoring is characterized in that: the components of the composition consist of a component A and a component B;
the component A comprises bio-based resin, an auxiliary agent, deionized water, a cosolvent and a pigment;
the component B is a conductive filler, and the conductive filler is nano carbon black, a carbon nano tube, Mxene, a silver nanowire or a nickel nanowire;
the auxiliary agent consists of a pH regulator, a drier, a dispersant, a defoaming agent, a wetting agent, a thickening agent, fumed silica and an anti-flash rust auxiliary agent;
the cosolvent is an ether cosolvent;
the pigment consists of precipitated barium sulfate, talcum powder and antirust pigment;
the component A and the component B are prepared from the following raw materials in parts by weight:
a component
Bio-based resin: 20-25 parts;
pH regulator: 0.3-0.6 parts;
a drier: 0.3-0.4 parts;
dispersing agent: 0.2-0.3 parts;
defoaming agent: 0.08-0.1 part;
wetting agent: 0.1 to 0.3 parts;
fumed silica: 0.4-0.5 parts;
anti-flash rust additive: 0.4-0.5 parts;
cosolvent: 3-5 parts;
precipitating barium sulfate: 15-18 parts;
talc powder: 5-8 parts of a solvent;
deionized water: 28-37 parts;
thickening agent: 0.1 to 0.5 parts;
antirust pigment: 3-5 parts;
component B
Conductive filler: 8-15 parts;
a preparation method of a bio-based water-based anticorrosion force-sensitive conductive coating for bridge building protection and health monitoring comprises the following steps:
s1, taking 8-15 parts of conductive filler for surface treatment;
s2, putting 10-13 parts of bio-based resin, 0.3-0.6 part of pH regulator, 3-5 parts of cosolvent and 0.3-0.4 part of drier into a dispersion tank in sequence for dispersion treatment to obtain a solution I;
s3, adding 9-13 parts of deionized water into the solution I prepared in the step S2, and performing dispersion treatment to obtain a solution II;
s4, taking 0.2-0.3 part of dispersing agent, 0.08-0.1 part of defoaming agent, 0.1-0.3 part of wetting agent, 15-18 parts of precipitated barium sulfate, 5-8 parts of talcum powder, 3-5 parts of antirust pigment, 0.4-0.5 part of fumed silica, 15-19 parts of deionized water, 0.4-0.5 part of anti-flash rust auxiliary agent, and taking 65-70% of conductive filler subjected to surface treatment in the step S1, respectively adding the conductive filler into the solution II prepared in the step S3, and performing dispersion treatment to obtain a solution III;
s5, putting the solution III obtained in the step S4 into a grinder for grinding treatment;
s6, putting the solution III which is ground in the step S5 into a dispersion cylinder again, mixing 10-12 parts of bio-based resin and 4-5 parts of deionized water to obtain a solution IV, flushing the grinding machine with the solution IV and recycling the solution IV into the dispersion cylinder to obtain a solution V;
s7, putting 30-35% of the conductive filler subjected to surface treatment in the step S1 and 0.1-0.5 part of thickening agent into the solution V for dispersion treatment, and completing preparation of the bio-based anticorrosive conductive coating;
when the conductive filler in step S1 is carbon black, carbon nanotube or Mxene, the surface treatment step is as follows: dispersing a silane coupling agent in an ethanol aqueous solution to obtain a solution VI, and then putting a conductive filler into a dispersion cylinder containing the solution VI for dispersion treatment;
when the conductive filler in step S1 is a silver nanowire or a nickel nanowire, the surface treatment step is as follows: firstly, mercaptan is dispersed in an ethanol aqueous solution to obtain a solution VII, and then conductive filler is placed in the solution VII for dispersion treatment;
the silane coupling agent is an amino silane coupling agent, and the mercaptan is 2-aminoethanethiol and 2-aminobenzenethiol.
2. The bio-based aqueous corrosion-resistant force-sensitive conductive coating for bridge building protection and health monitoring according to claim 1, characterized in that:
the time of the dispersing treatment in the step S2 is 5-6 minutes, and the dispersing speed is 400-600 r/min;
the time of the dispersing treatment in the step S3 is 5-6 minutes, and the dispersing speed is 400-600 r/min;
the time of the dispersing treatment in the step S4 is 18-22 minutes, and the dispersing speed is 600-800 r/min;
the time of the dispersion treatment in the step S7 is 5-6 minutes, and the dispersion speed is 400-600 r/min.
3. The bio-based aqueous corrosion-resistant force-sensitive conductive coating for bridge building protection and health monitoring according to claim 1, characterized in that: in the step S5, the grinding treatment is carried out until the fineness is less than 30 micrometers, and the temperature is not more than 50 ℃ in the grinding treatment process.
4. The bio-based aqueous corrosion-resistant force-sensitive conductive coating for bridge building protection and health monitoring according to claim 1, characterized in that:
the conductive filler is nano carbon black, a carbon nano tube or Mxene, the dispersion treatment is firstly carried out for 18-22 min at 400-600 r/min, then the temperature is raised to 48-50 ℃, and the dispersion time is 28-30 min at 400-600 r/min;
the conductive filler is silver nanowires or nickel nanowires, and the dispersion treatment is firstly carried out for 18-22 min at 400-600 r/min, then the temperature is raised to 38-40 ℃, and the dispersion time is 28-30 min at 400-600 r/min.
5. The bio-based aqueous corrosion-resistant force-sensitive conductive coating for bridge building protection and health monitoring according to claim 1, characterized in that:
the ratio of ethanol to water in the ethanol water solution is 1: 10;
the ratio of the silane coupling agent to the aqueous solution of ethanol is 1: 10;
the ratio of the mercaptan to the aqueous ethanol solution was 1: 10.
Priority Applications (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202010124120.8A CN111303770B (en) | 2020-02-27 | 2020-02-27 | Bio-based water-based anticorrosive conductive coating for bridge building protection and health monitoring and preparation method thereof |
| PCT/CN2020/080386 WO2021168945A1 (en) | 2020-02-27 | 2020-03-20 | Bio-based aqueous anti-corrosion conductive coating for bridge building protection and health monitoring and preparation method therefor |
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| CN202010124120.8A CN111303770B (en) | 2020-02-27 | 2020-02-27 | Bio-based water-based anticorrosive conductive coating for bridge building protection and health monitoring and preparation method thereof |
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| CN111978822B (en) * | 2020-08-30 | 2021-10-26 | 盐城工学院 | Two-dimensional composite material modified waterborne epoxy zinc-rich composite coating, and preparation method and application thereof |
| CN114479542A (en) * | 2020-11-12 | 2022-05-13 | 青岛市资源化学与新材料研究中心（中国科学院兰州化学物理研究所青岛研究发展中心） | Anti-corrosion and anti-static water-based fluorocarbon coating and preparation method and application thereof |
| CN113061363B (en) * | 2021-04-19 | 2022-09-02 | 北京纳米能源与系统研究所 | Marking paint, single-electrode friction nano generator and touch detection system |
| CN114350188B (en) * | 2021-12-14 | 2023-01-03 | 青岛理工大学 | Energy storage protection type cement-based micro-variation monitoring coating for existing building strain monitoring and cement-based sensor |
| CN115595019A (en) * | 2022-10-17 | 2023-01-13 | 广西至善新材料科技有限公司（Cn） | Locust bean gum conductive coating and preparation method thereof |
| CN115558378A (en) * | 2022-10-31 | 2023-01-03 | 上海席亚高分子材料有限公司 | Ultrathin coating conductive coating and preparation method thereof |
| CN116239932B (en) * | 2023-02-15 | 2023-12-12 | 西南交通大学 | Gly@Ti-based 3 C 2 Tx/AgNWs high-conductivity water-based paint and preparation method thereof |
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| US20050119371A1 (en) * | 2003-10-15 | 2005-06-02 | Board Of Trustees Of Michigan State University | Bio-based epoxy, their nanocomposites and methods for making those |
| CN105008466A (en) * | 2013-03-08 | 2015-10-28 | 比克化学有限公司 | Process for providing metallic substrates with corrosion resistance |
| JP6308737B2 (en) * | 2013-08-26 | 2018-04-11 | デクセリアルズ株式会社 | Metal nanowire, dispersion, transparent conductive film, information input device, and electronic device |
| EP3349981B1 (en) * | 2015-09-17 | 2020-08-26 | Roberto Velozzi Jerez | Load-bearing composite panels, materials, products, and processes to make and use same |
| CN108384448B (en) * | 2017-05-17 | 2019-10-29 | 东华大学 | A kind of composite Nano corrosion-inhibiting coating of imitative clam shell feature and preparation method thereof |
| CN107236421B (en) * | 2017-07-19 | 2019-10-15 | 清华大学深圳研究生院 | A kind of electromagnetic screen coating |
| CN108690466B (en) * | 2018-06-06 | 2020-07-24 | 长木（宁波）新材料科技有限公司 | Waterborne epoxy ester based on bio-based material and preparation method thereof |
| CN110373087A (en) * | 2019-07-05 | 2019-10-25 | 中山大学 | A kind of aqueous photoresponse self-repairing coating material and preparation method thereof |
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