CN112592626A - Water-based paint and preparation method and application thereof - Google Patents
Water-based paint and preparation method and application thereof Download PDFInfo
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- CN112592626A CN112592626A CN202011263275.6A CN202011263275A CN112592626A CN 112592626 A CN112592626 A CN 112592626A CN 202011263275 A CN202011263275 A CN 202011263275A CN 112592626 A CN112592626 A CN 112592626A
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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
- C09D127/00—Coating compositions based on homopolymers or copolymers of compounds having one or more unsaturated aliphatic radicals, each having only one carbon-to-carbon double bond, and at least one being terminated by a halogen; Coating compositions based on derivatives of such polymers
- C09D127/02—Coating compositions based on homopolymers or copolymers of compounds having one or more unsaturated aliphatic radicals, each having only one carbon-to-carbon double bond, and at least one being terminated by a halogen; Coating compositions based on derivatives of such polymers not modified by chemical after-treatment
- C09D127/12—Coating compositions based on homopolymers or copolymers of compounds having one or more unsaturated aliphatic radicals, each having only one carbon-to-carbon double bond, and at least one being terminated by a halogen; Coating compositions based on derivatives of such polymers not modified by chemical after-treatment containing fluorine atoms
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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
- 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
- C08K2003/2237—Oxides; Hydroxides of metals of titanium
- C08K2003/2241—Titanium dioxide
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Abstract
The application relates to the technical field of coatings, in particular to a water-based coating and a preparation method and application thereof. The water-based paint comprises the following components in percentage by weight, based on the total weight of the water-based paint as 100 percent: 50-70% of aqueous emulsion type fluorocarbon resin; 5% -15% of graphene dispersion liquid; 0.5 to 2 percent of dispersant; 0.05 to 0.2 percent of defoaming agent; titanium dioxide; 15% -25% of film-forming additive 3% -15%; 0.05 to 2 percent of thickening agent; 0 to 20 percent of water. The water-based paint has excellent cracking resistance, durability, easy application, cleanness and long-term excellent gloss and color retention, and each component is an environment-friendly component, so that the water-based paint has the advantage of environmental friendliness.
Description
Technical Field
The application belongs to the technical field of coatings, and particularly relates to a water-based coating as well as a preparation method and application thereof.
Background
Fluorocarbon coatings refer to coatings using fluororesin as a main film forming substance, and are also called fluorocarbon paint, fluorine coating, fluororesin coating and the like. Among various coatings, the fluorocarbon coating has various particularly excellent properties due to the introduction of fluorine with high electronegativity and strong carbon-fluorine bond energy.
It is known that in order to achieve the longest possible service/protection life of the coating, the coating is usually applied as thick as possible, and the increase of the coating thickness often leads to the increased tendency of the coating to crack after being subjected to wind and rain, however, the current water-based fluorocarbon coating products are still immature, the weather resistance is much lower than that of the solvent-based fluorocarbon coating, the hardness and the gloss retention are poor, and the thick coating is easy to crack.
Therefore, the related art is in need of improvement.
Disclosure of Invention
The application aims to provide a water-based paint, a preparation method and application thereof, and aims to solve the technical problem that the water-based fluorocarbon paint is easy to crack.
In order to achieve the purpose of the application, the technical scheme adopted by the application is as follows:
in a first aspect, the present application provides a water-based paint, which comprises the following components in percentage by weight, based on the total weight of the water-based paint as 100%:
the water-based paint provided by the application is a water-based graphene enhanced single-component fluorocarbon paint, the components of the water-based graphene enhanced single-component fluorocarbon paint comprise water-based emulsion fluorocarbon resin, a film forming auxiliary agent, graphene dispersion liquid, titanium dioxide, a dispersing agent, a defoaming agent, a thickening agent and water, and the water-based graphene enhanced single-component fluorocarbon paint has excellent cracking resistance, durability, easy construction performance, cleanness and long-term excellent gloss and color preservation performance through the synergistic effect of the components, is an environment-friendly component, and has the advantage of being environment-friendly.
In a second aspect, the present application provides a method for preparing a water-based paint, comprising the steps of:
weighing the components according to the formula of the water-based paint;
and mixing the aqueous emulsion fluorocarbon resin, the graphene dispersion liquid, the dispersing agent, the defoaming agent, the titanium dioxide, the film forming aid, the thickening agent and the water to obtain the aqueous coating.
According to the preparation method of the water-based paint, the raw materials of the water-based paint formula special for the application are mixed according to a specific ratio, so that the water-based graphene enhanced single-component fluorocarbon paint with the functions can be obtained.
In a third aspect, the application provides the application of the water-based paint and/or the water-based paint obtained by the preparation method of the water-based paint on the surface of an outdoor building substrate.
The water-based paint has good thick-coating crack resistance, weather resistance and self-cleaning property, so that when the water-based paint is used for outdoor infrastructure, the paint can not only achieve a good protection effect for coating a higher film thickness on a base material, but also avoid the problems of paint film cracking and the like caused by overlong film thickness and over-thickness of the coating during the use time, and is suitable for various indoor and outdoor scenes, thereby having good application prospect and market value.
Detailed Description
In order to make the technical problems, technical solutions and advantageous effects to be solved by the present application more clearly apparent, the present application is further described in detail below with reference to the embodiments. It should be understood that the specific embodiments described herein are merely illustrative of the present application and are not intended to limit the present application.
In this application, the term "and/or" describes an association relationship of associated objects, meaning that there may be three relationships, e.g., a and/or B, which may mean: a is present alone, A and B are present simultaneously, and B is present alone. Wherein A and B can be singular or plural. The character "/" generally indicates that the former and latter associated objects are in an "or" relationship.
The terminology used in the embodiments of the present application is for the purpose of describing particular embodiments only and is not intended to be limiting of the application. As used in the examples of this application and the appended claims, the singular forms "a", "an", and "the" are intended to include the plural forms as well, unless the context clearly indicates otherwise. In addition, unless the context clearly uses otherwise, an expression of a word in the singular is to be understood as including the plural of the word. The terms "comprises" or "comprising" are intended to specify the presence of stated features, quantities, steps, operations, elements, portions, or combinations thereof, but are not intended to preclude the presence or addition of one or more other features, quantities, steps, operations, elements, portions, or combinations thereof.
The weight of the related components mentioned in the description of the embodiments of the present application may not only refer to the specific content of each component, but also represent the proportional relationship of the weight among the components, and therefore, the content of the related components is scaled up or down within the scope disclosed in the description of the embodiments of the present application as long as it is scaled up or down according to the description of the embodiments of the present application. Specifically, the mass described in the specification of the embodiments of the present application may be a mass unit known in the chemical industry field such as μ g, mg, g, kg, etc.
According to a first aspect of the embodiments of the present application, there is provided a water-based paint, which comprises the following components in percentage by weight, based on the total weight of the water-based paint as 100%:
the water-based paint provided by the application is a water-based graphene enhanced single-component fluorocarbon paint, and comprises water-based emulsion fluorocarbon resin, titanium dioxide, a dispersing agent, graphene dispersion liquid, a defoaming agent, a film-forming auxiliary agent, a thickening agent and water; the coating formed by the water-based paint has good cracking resistance, weather resistance and self-cleaning property by matching with other auxiliaries and water; in addition, each component in the water-based paint is an environment-friendly component, so that the water-based paint is a water-based environment-friendly paint and has the advantage of environmental friendliness; finally, although the paint is a water-based paint, the hardness of the formed coating is equivalent to that of an oily fluorocarbon paint, and compared with the traditional fluorocarbon paint, the paint is more weather-resistant, has thick-coating crack resistance and can be applied to various outdoor scenes.
In some embodiments, the aqueous emulsion fluorocarbon resin is an alternating copolymer of a fluorinated olefin and an alkyl vinyl ether, that is, the molecular structure of the aqueous emulsion fluorocarbon resin is an alternating copolymer of a fluorinated olefin and an alkyl vinyl ether (FEVE), and vinyl silane is introduced into a fluorine resin with a fluorine-containing main chain for copolymerization to realize single-component normal-temperature crosslinking curing. FEVE type polymers are first developed by Asahi glass company of Japan as fluororesins for paints, which copolymerize different olefins into polymers by a copolymerization method, and such copolymers exhibit a combination of properties of different olefins. Through the selection of olefin varieties, the resin meeting the service performance of the coating is obtained. The FEVE type copolymer resin obtained by copolymerizing fluorine-containing olefin (FE) and Vinyl Ether (VE) with different functional groups is used for coating, not only shows the environmental aging resistance and chemical resistance of the fluorine-containing polymer, but also can be dissolved in a solvent, and as active groups are arranged on molecules, the FEVE type copolymer resin can be self-crosslinked at normal temperature or crosslinked with a curing agent, the FEVE type copolymer resin can be prepared into a solvent type or a water aqua (water emulsion) type, and the water-based emulsion fluorocarbon resin, the water-based emulsion fluorocarbon resin and titanium dioxide are used as main film forming main components of the water-based coating, have thick coating crack resistance, so that an outdoor large-scale structure can be coated with the high-performance fluorine coating, and the basic molecular structure is as follows:
further, the aqueous emulsion type fluorocarbon resin is preferably: LUMIFLON FE 4300 from Asahi Glass (AGC), F-500 from Dalian Vital, and RF-100 series from Fuxin Ruifeng. The content of the aqueous emulsion type fluorocarbon resin is 50-70%, and specifically can be 50%, 55%, 58%, 60%, 64%, 56%, 68%, 70% and the like.
In some embodiments, the titanium dioxide type is rutile titanium dioxide, and preferred titanium dioxides are: python R996, DuPon R706, Pan Steel mountain R248 +; titanium dioxide is a very good white pigment. The content of the titanium dioxide is 15-25%, and specifically 15%, 18%, 20%, 22%, 24%, 25% and the like.
According to the application, the aqueous emulsion fluorocarbon resin and the titanium dioxide are combined according to a specific proportion to serve as matrix resin of the aqueous coating, wherein the aqueous emulsion fluorocarbon resin serves as a main film forming substance and a crosslinking carrier, the titanium dioxide serves as a crosslinking curing agent and is crosslinked and cured with the aqueous emulsion fluorocarbon resin to improve the crosslinking density of a paint film, and the addition of the graphene can further improve the hardness and the cracking resistance of the paint film, so that a coating formed by the aqueous coating has good cracking resistance and weather resistance.
In some embodiments, the dispersant is an aqueous polymeric dispersant compatible with the graphene dispersion. Preferably, the graphene dispersion liquid (graphene slurry) of the present application has the following characteristics: (1) contains rich oxygen-containing functional groups such as hydroxyl, carboxyl, epoxy and the like; (2) the modified starch is easy to graft and modify, and can be compounded with the composite material in situ, so that the composite material is endowed with the performances of cracking resistance, reinforcement, antibiosis, bacteriostasis and the like; (3) has good water dispersibility. The graphene dispersion liquid is preferably SE3122, SE3522 and SE3521 of Hezhou element company, the SE3122 and SE3522 have good dispersibility in water, the sample single-layer rate is more than 90%, and the graphene dispersion liquid can be mutually dissolved with water phase only by slight stirring; the SE3521 treated by the method can achieve good water dispersibility. The dispersant is selected from dispersants matched with SE3122, SE3522 and SE3521 graphene dispersions, such as BYK-190 aqueous polymer dispersant produced by Bick company, and can prevent the flocculation of coating components, improve the stability and tinting strength of the obtained aqueous coating, namely the aqueous graphene enhanced single-component fluorocarbon coating, improve the storage stability of the coating, improve the wettability and glossiness of the coating and reduce the viscosity of the coating. The content of the graphene dispersion liquid is 5% to 15%, and specifically may be 5%, 8%, 10%, 12%, 14%, 15%, or the like. The content of the dispersant is 0.5% to 2%, and specifically may be 0.5%, 0.8%, 1%, 1.2%, 1.5%, 1.8%, 2%, etc.
In some embodiments, the defoamer is a polyether modified polysiloxane defoamer, such as TEGO 902W (emulsion of polyether polysiloxane) produced by Germany Digao auxiliary company, and has the advantages of good defoaming effect and no influence on leveling. In some specific embodiments, the mass content of the defoaming agent in the coating is 0.05-0.2%, if the addition amount is small, the defoaming effect is poor, and the defects of paint films such as miliaria, foaming, shrinkage cavity and the like are caused by more foaming in the construction process/paint film drying process; when the amount of the additive is too large, problems such as oil pits and shrinkage cavities tend to occur, while when the amount is too large, unnecessary cost is incurred. The content of the defoaming agent may be 0.05% to 0.2%, specifically 0.05%, 0.08%, 0.1%, 0.12%, 0.15%, 0.18%, 0.2%, or the like.
In some embodiments, the coalescent includes at least one of an alcohol ester-based coalescent and an alcohol ether-based coalescent. Specifically, the alcohol ester film-forming aid comprises alcohol ester-12, and the alcohol ether aids comprise ethylene glycol butyl ether EB, propylene glycol methyl ether PM, propylene glycol ethyl ether, propylene glycol butyl ether, dipropylene glycol monomethyl ether DPM, dipropylene glycol monopropyl ether DPnP, dipropylene glycol monobutyl ether DPnB, tripropylene glycol n-butyl ether TPnB, propylene glycol phenyl ether PPH and the like. The content of the film-forming assistant is 3% to 15%, and specifically, may be 3%, 4%, 5%, 8%, 10%, 12%, 15%, or the like.
In some embodiments, the thickener comprises at least one of a polyurethane-based thickener and a cellulose ether-based thickener. The thickening agent can adjust the viscosity of the thickening agent, improve the storage stability, and also has the functions of preventing sagging and improving the film thickness. In particular, the thickening agent may be selected from: romen Hass RM-8W, Akzo Nobel Bermodor 2150, CA-H12 fluorocarbon paint thickener Duomao, Guangzhou. The content of the thickener is 0.05% to 2%, and specifically may be 0.05%, 0.1%, 0.5%, 0.8%, 1%, 1.5%, 2%, etc.
In some embodiments, the water is deionized water, and the water is used as a solvent of the water-based paint of the present application, so that the water-based paint is an environment-friendly water-based paint, does not contain harmful substances such as benzene and toluene, and is more environment-friendly. The water content may be 0% to 20%, specifically 2%, 4%, 5%, 10%, 12%, 14%, 20%, etc.
In a preferred embodiment, the aqueous coating comprises:
in a second aspect, embodiments of the present application provide a method for preparing a water-based paint, including the following steps:
s01: weighing the components according to the formula of the water-based paint;
s02: and mixing the aqueous emulsion fluorocarbon resin, the graphene dispersion liquid, the dispersing agent, the defoaming agent, the titanium dioxide, the film forming aid, the thickening agent and the water to obtain the aqueous coating.
According to the preparation method of the water-based paint, the raw materials of the water-based paint formula special for the application are mixed according to a specific ratio, so that the water-based graphene enhanced single-component fluorocarbon paint with the functions can be obtained.
In step S01, the components and the content are weighed and provided to prepare the water-based paint according to the introduction of the present application.
In step S02, the components are mixed in proportion to obtain the water-based paint. In some embodiments, the surface tension of the obtained water-based paint can be more uniform and the components can be uniformly dispersed by adding and mixing the components in a specific sequence, so that the problem of oil pits of a coating formed by the water-based paint is avoided. The dispersion order is important because the components are not uniformly dispersed, and particularly, when the surfactant affecting the surface tension of the paint film is not sufficiently uniformly dispersed, the oil pit phenomenon is liable to occur. Specifically, the specific order is as follows: firstly, putting aqueous emulsion type fluorocarbon resin, a dispersing agent and partial deionized water (for example, taking the total content of water as 10 percent, half of the deionized water can be added at first, namely 5 percent, the 5 percent of water can better disperse the resin and adjust the viscosity) into a dispersion cylinder, fully stirring the mixture evenly, then adding graphene dispersion liquid to disperse evenly at a high speed (for example, at a rotation speed of 1200-1700r/min, for example, at 1500r/min), sequentially adding a defoaming agent, titanium dioxide, a film-forming aid, a thickening agent and the balance of deionized water (for example, the balance of half of water is 5 percent, so as to better clean the resin/other aids remained on the dispersion cylinder/dispersion disc), dispersing again at a high speed (for example, at a rotation speed of 1200-1700 r/min), for example 1500 r/min). The method comprises the steps of firstly adding water-based emulsion fluorocarbon resin, a dispersing agent and deionized water as dispersing carriers, then adding graphene dispersion liquid to enable graphene to be uniformly arranged, and then adding a defoaming agent, titanium dioxide and a film-forming aid under the condition of high-speed dispersion, so that the phenomenon of paint film shrinkage caused by nonuniform dispersion is avoided, and the thickening agent and the residual deionized water are added later.
Finally, the application also provides an application of the water-based paint obtained by the preparation method of the water-based paint and/or the water-based paint on the surface of the outdoor building substrate.
The water-based paint has good thick-coating crack resistance, weather resistance and self-cleaning property, so that when the water-based paint is used for outdoor infrastructure, the paint can not only achieve a good protection effect for coating a higher film thickness on a base material, but also avoid the problems of paint film cracking and the like caused by overlong film thickness and over-thickness of the coating during the use time, and is suitable for various indoor and outdoor scenes, thereby having good application prospect and market value.
Specifically, the water-based graphene-enhanced single-component fluorocarbon coating is coated on the surfaces of building exterior walls, bridges, dams, tunnels, steel structures, aluminum profiles, roofs and various outdoor building base materials, and a coating is formed through natural drying treatment, so that the excellent protection effect (thick coating cracking resistance and better weather resistance) on the base materials is realized. Specifically, the natural drying is to form the coating after drying for 24-48h under the conditions that the relative humidity is less than or equal to 75% and the temperature is 0-50 ℃.
Further, after the water-based paint is coated on the surface of the base material, the drying time is set to be 24-48h in order to ensure that the coating has enough hardness and the bonding strength between the coating and the base material is improved. Typical but non-limiting drying treatment times are 24h, 36h, 48h, 60h, 72h, 84h, 96h, 168h, 336h, 720h, etc.
The following description will be given with reference to specific examples.
Example 1
A preparation method of a water-based graphene enhanced single-component fluorocarbon coating comprises the following steps:
(1) preparing materials: preparing water-based emulsion fluorocarbon resin, titanium dioxide, a thickening agent, graphene dispersion liquid, a dispersing agent, a defoaming agent, a film forming auxiliary agent and deionized water according to the following weight ratio;
(2) mixing materials: the preparation method comprises the steps of firstly putting the aqueous emulsion fluorocarbon resin, the dispersing agent and part of deionized water into a dispersion cylinder, wherein the amount of the aqueous emulsion fluorocarbon resin, the dispersing agent and the part of deionized water are set according to the formula, fully stirring the mixture at a medium speed, then adding the graphene dispersion liquid for high-speed dispersion for 30min, respectively adding the defoaming agent, the titanium dioxide, the film-forming assistant, the thickening agent and the balance of the deionized water under the high-speed dispersion condition, filtering and packaging the mixture by using a 200-mesh filter screen after high-speed.
Example 2
A preparation method of a water-based graphene enhanced single-component fluorocarbon coating comprises the following steps:
(1) preparing materials: preparing water-based emulsion fluorocarbon resin, titanium dioxide, a thickening agent, graphene dispersion liquid, a dispersing agent, a defoaming agent, a film forming auxiliary agent and deionized water according to the following weight ratio;
(2) mixing materials: the preparation method comprises the steps of firstly putting the aqueous emulsion fluorocarbon resin, the dispersing agent and part of deionized water into a dispersion cylinder, wherein the amount of the aqueous emulsion fluorocarbon resin, the dispersing agent and the part of deionized water are set according to the formula, fully stirring the mixture at a medium speed, then adding the graphene dispersion liquid for high-speed dispersion for 30min, respectively adding the defoaming agent, the titanium dioxide, the film-forming assistant, the thickening agent and the balance of the deionized water under the high-speed dispersion condition, filtering and packaging the mixture by using a 200-mesh filter screen after high-speed.
Example 3
A preparation method of a water-based graphene enhanced single-component fluorocarbon coating comprises the following steps:
(1) preparing materials: preparing water-based emulsion fluorocarbon resin, titanium dioxide, a thickening agent, graphene dispersion liquid, a dispersing agent, a defoaming agent, a film forming auxiliary agent and deionized water according to the following weight ratio;
(2) mixing materials: the preparation method comprises the steps of firstly putting the aqueous emulsion fluorocarbon resin, the dispersing agent and part of deionized water into a dispersion cylinder, wherein the amount of the aqueous emulsion fluorocarbon resin, the dispersing agent and the part of deionized water are set according to the formula, fully stirring the mixture at a medium speed, then adding the graphene dispersion liquid for high-speed dispersion for 30min, respectively adding the defoaming agent, the titanium dioxide, the film-forming assistant, the thickening agent and the balance of the deionized water under the high-speed dispersion condition, filtering and packaging the mixture by using a 200-mesh filter screen after high-speed.
Example 4
A preparation method of a water-based graphene enhanced single-component fluorocarbon coating comprises the following steps:
(1) preparing materials: preparing water-based emulsion fluorocarbon resin, titanium dioxide, a thickening agent, graphene dispersion liquid, a dispersing agent, a defoaming agent, a film forming auxiliary agent and deionized water according to the following weight ratio;
(2) mixing materials: the preparation method comprises the steps of firstly putting the aqueous emulsion fluorocarbon resin, the dispersing agent and part of deionized water into a dispersion cylinder, wherein the amount of the aqueous emulsion fluorocarbon resin, the dispersing agent and the part of deionized water are set according to the formula, fully stirring the mixture at a medium speed, then adding the graphene dispersion liquid for high-speed dispersion for 30min, respectively adding the defoaming agent, the titanium dioxide, the film-forming assistant, the thickening agent and the balance of the deionized water under the high-speed dispersion condition, filtering and packaging the mixture by using a 200-mesh filter screen after high-speed.
Example 5
A preparation method of a water-based graphene enhanced single-component fluorocarbon coating comprises the following steps:
(1) preparing materials: preparing water-based emulsion fluorocarbon resin, titanium dioxide, a thickening agent, graphene dispersion liquid, a dispersing agent, a defoaming agent, a film forming auxiliary agent and deionized water according to the following weight ratio;
(2) mixing materials: the preparation method comprises the steps of firstly putting the aqueous emulsion fluorocarbon resin, the dispersing agent and part of deionized water into a dispersion cylinder, wherein the amount of the aqueous emulsion fluorocarbon resin, the dispersing agent and the part of deionized water are set according to the formula, fully stirring the mixture at a medium speed, then adding the graphene dispersion liquid for high-speed dispersion for 30min, respectively adding the defoaming agent, the titanium dioxide, the film-forming assistant, the thickening agent and the balance of the deionized water under the high-speed dispersion condition, filtering and packaging the mixture by using a 200-mesh filter screen after high-speed.
Example 6
A preparation method of a water-based graphene enhanced single-component fluorocarbon coating comprises the following steps:
(1) preparing materials: preparing water-based emulsion fluorocarbon resin, titanium dioxide, a thickening agent, graphene dispersion liquid, a dispersing agent, a defoaming agent, a film forming auxiliary agent and deionized water according to the following weight ratio;
(2) mixing materials: the preparation method comprises the steps of firstly putting the aqueous emulsion fluorocarbon resin, the dispersing agent and part of deionized water into a dispersion cylinder, wherein the amount of the aqueous emulsion fluorocarbon resin, the dispersing agent and the part of deionized water are set according to the formula, fully stirring the mixture at a medium speed, then adding the graphene dispersion liquid for high-speed dispersion for 30min, respectively adding the defoaming agent, the titanium dioxide, the film-forming assistant, the thickening agent and the balance of the deionized water under the high-speed dispersion condition, filtering and packaging the mixture by using a 200-mesh filter screen after high-speed.
Example 7
A preparation method of a water-based graphene enhanced single-component fluorocarbon coating comprises the following steps:
(1) preparing materials: preparing water-based emulsion fluorocarbon resin, titanium dioxide, a thickening agent, graphene dispersion liquid, a dispersing agent, a defoaming agent, a film forming auxiliary agent and deionized water according to the following weight ratio;
(2) mixing materials: the preparation method comprises the steps of firstly putting the aqueous emulsion fluorocarbon resin, the dispersing agent and part of deionized water into a dispersion cylinder, wherein the amount of the aqueous emulsion fluorocarbon resin, the dispersing agent and the part of deionized water are set according to the formula, fully stirring the mixture at a medium speed, then adding the graphene dispersion liquid for high-speed dispersion for 30min, respectively adding the defoaming agent, the titanium dioxide, the film-forming assistant, the thickening agent and the balance of the deionized water under the high-speed dispersion condition, filtering and packaging the mixture by using a 200-mesh filter screen after high-speed.
Example 8
A preparation method of a water-based graphene enhanced single-component fluorocarbon coating comprises the following steps:
(1) preparing materials: preparing water-based emulsion fluorocarbon resin, titanium dioxide, a thickening agent, graphene dispersion liquid, a dispersing agent, a defoaming agent, a film forming auxiliary agent and deionized water according to the following weight ratio;
(2) mixing materials: the preparation method comprises the steps of firstly putting the aqueous emulsion fluorocarbon resin, the dispersing agent and part of deionized water into a dispersion cylinder, wherein the amount of the aqueous emulsion fluorocarbon resin, the dispersing agent and the part of deionized water are set according to the formula, fully stirring the mixture at a medium speed, then adding the graphene dispersion liquid for high-speed dispersion for 30min, respectively adding the defoaming agent, the titanium dioxide, the film-forming assistant, the thickening agent and the balance of the deionized water under the high-speed dispersion condition, filtering and packaging the mixture by using a 200-mesh filter screen after high-speed.
Example 9
A preparation method of a water-based graphene enhanced single-component fluorocarbon coating comprises the following steps:
(1) preparing materials: preparing water-based emulsion fluorocarbon resin, titanium dioxide, a thickening agent, graphene dispersion liquid, a dispersing agent, a defoaming agent, a film forming auxiliary agent and deionized water according to the following weight ratio;
(2) mixing materials: the preparation method comprises the steps of firstly putting the aqueous emulsion fluorocarbon resin, the dispersing agent and part of deionized water into a dispersion cylinder, wherein the amount of the aqueous emulsion fluorocarbon resin, the dispersing agent and the part of deionized water are set according to the formula, fully stirring the mixture at a medium speed, then adding the graphene dispersion liquid for high-speed dispersion for 30min, respectively adding the defoaming agent, the titanium dioxide, the film-forming assistant, the thickening agent and the balance of the deionized water under the high-speed dispersion condition, filtering and packaging the mixture by using a 200-mesh filter screen after high-speed.
Example 10
A preparation method of a water-based graphene enhanced single-component fluorocarbon coating comprises the following steps:
(1) preparing materials: preparing water-based emulsion fluorocarbon resin, titanium dioxide, a thickening agent, graphene dispersion liquid, a dispersing agent, a defoaming agent, a film forming auxiliary agent and deionized water according to the following weight ratio;
(2) mixing materials: the preparation method comprises the steps of firstly putting the aqueous emulsion fluorocarbon resin, the dispersing agent and part of deionized water into a dispersion cylinder, wherein the amount of the aqueous emulsion fluorocarbon resin, the dispersing agent and the part of deionized water are set according to the formula, fully stirring the mixture at a medium speed, then adding the graphene dispersion liquid for high-speed dispersion for 30min, respectively adding the defoaming agent, the titanium dioxide, the film-forming assistant, the thickening agent and the balance of the deionized water under the high-speed dispersion condition, filtering and packaging the mixture by using a 200-mesh filter screen after high-speed.
Comparative example 1
The preparation method of the water-based fluorocarbon coating comprises the following steps:
(1) preparing materials: preparing water-based emulsion fluorocarbon resin, titanium dioxide, a thickening agent, graphene dispersion liquid, a dispersing agent, a defoaming agent, a film forming auxiliary agent and deionized water according to the following weight ratio;
(2) mixing materials: firstly, adding the aqueous emulsion type fluorocarbon resin, the dispersing agent and part of deionized water with the set formula amount into a dispersion cylinder, fully stirring uniformly at a medium speed, respectively adding the defoaming agent, the titanium dioxide, the film-forming assistant, the thickening agent and the balance of the deionized water under the condition of high-speed dispersion, dispersing for 40min at a high speed, and filtering and packaging by using a 200-mesh filter screen to obtain the aqueous single-component fluorocarbon coating.
Comparative example 2
The preparation method of the water-based fluorocarbon coating comprises the following steps:
(1) preparing materials: preparing water-based emulsion fluorocarbon resin, titanium dioxide, a thickening agent, graphene dispersion liquid, a dispersing agent, a defoaming agent, a film forming auxiliary agent and deionized water according to the following weight ratio;
(2) mixing materials: the preparation method comprises the steps of firstly putting the aqueous emulsion fluorocarbon resin, the dispersing agent and part of deionized water into a dispersion cylinder, wherein the amount of the aqueous emulsion fluorocarbon resin, the dispersing agent and the part of deionized water are set according to the formula, fully stirring the mixture at a medium speed, then adding the graphene dispersion liquid for high-speed dispersion for 30min, respectively adding the defoaming agent, the titanium dioxide, the film-forming assistant, the thickening agent and the balance of the deionized water under the high-speed dispersion condition, filtering and packaging the mixture by using a 200-mesh filter screen after.
Comparative example 3
The preparation method of the water-based fluorocarbon coating comprises the following steps:
(1) preparing materials: preparing water-based emulsion fluorocarbon resin, titanium dioxide, a thickening agent, graphene dispersion liquid, a dispersing agent, a defoaming agent, a film forming auxiliary agent and deionized water according to the following weight ratio;
(2) mixing materials: the preparation method comprises the steps of firstly putting the aqueous emulsion fluorocarbon resin, the dispersing agent and part of deionized water into a dispersion cylinder, wherein the amount of the aqueous emulsion fluorocarbon resin, the dispersing agent and the part of deionized water are set according to the formula, fully stirring the mixture at a medium speed, then adding the graphene dispersion liquid for high-speed dispersion for 30min, respectively adding the defoaming agent, the titanium dioxide, the film-forming assistant, the thickening agent and the balance of the deionized water under the high-speed dispersion condition, filtering and packaging the mixture by using a 200-mesh filter screen after.
Comparative example 4
The preparation method of the water-based fluorocarbon coating comprises the following steps:
(1) preparing materials: preparing water-based emulsion fluorocarbon resin, titanium dioxide, a thickening agent, graphene dispersion liquid, a dispersing agent, a defoaming agent, a film forming auxiliary agent and deionized water according to the following weight ratio;
(2) mixing materials: the preparation method comprises the steps of firstly putting the aqueous emulsion type fluorocarbon resin, the dispersing agent and part of deionized water into a dispersion cylinder, wherein the amount of the aqueous emulsion type fluorocarbon resin, the dispersing agent and the part of deionized water are set according to the formula, fully stirring the mixture at a medium speed, then adding the graphene dispersion liquid for high-speed dispersion for 30min, respectively adding the defoaming agent, the titanium dioxide, the thickening agent and the balance of the deionized water under the high-speed dispersion condition, filtering and packaging the mixture by using a 200-mesh filter screen after high.
Comparative example 5
The preparation method of the water-based fluorocarbon coating comprises the following steps:
(1) preparing materials: preparing water-based emulsion fluorocarbon resin, titanium dioxide, a thickening agent, graphene dispersion liquid, a dispersing agent, a defoaming agent, a film forming auxiliary agent and deionized water according to the following weight ratio;
(2) mixing materials: the preparation method comprises the steps of firstly putting the aqueous emulsion fluorocarbon resin, the dispersing agent and part of deionized water into a dispersion cylinder, wherein the amount of the aqueous emulsion fluorocarbon resin, the dispersing agent and the part of deionized water are set according to the formula, fully stirring the mixture at a medium speed, then adding the graphene dispersion liquid for high-speed dispersion for 30min, respectively adding the defoaming agent, the titanium dioxide, the film-forming assistant, the thickening agent and the balance of the deionized water under the high-speed dispersion condition, filtering and packaging the mixture by using a 200-mesh filter screen after.
Comparative example 6
The preparation method of the water-based fluorocarbon coating comprises the following steps:
(1) preparing materials: preparing water-based emulsion fluorocarbon resin, titanium dioxide, a thickening agent, graphene dispersion liquid, a dispersing agent, a defoaming agent, a film forming auxiliary agent and deionized water according to the following weight ratio;
(2) mixing materials: the preparation method comprises the steps of firstly putting the aqueous emulsion fluorocarbon resin, the dispersing agent and part of deionized water into a dispersion cylinder, wherein the amount of the aqueous emulsion fluorocarbon resin, the dispersing agent and the part of deionized water are set according to the formula, fully stirring the mixture at a medium speed, then adding the graphene dispersion liquid for high-speed dispersion for 30min, respectively adding the defoaming agent, the titanium dioxide, the film-forming assistant, the thickening agent and the balance of the deionized water under the high-speed dispersion condition, filtering and packaging the mixture by using a 200-mesh filter screen after.
Comparative example 7
The preparation method of the water-based fluorocarbon coating comprises the following steps:
(1) preparing materials: preparing water-based emulsion fluorocarbon resin, titanium dioxide, a thickening agent, graphene dispersion liquid, a dispersing agent, a defoaming agent, a film forming auxiliary agent and deionized water according to the following weight ratio;
(2) mixing materials: firstly, adding the aqueous emulsion type fluorocarbon resin, the dispersing agent and part of deionized water with the set formula amount into a dispersion cylinder, fully stirring uniformly at a medium speed, respectively adding the defoaming agent, the titanium dioxide, the film-forming assistant, the thickening agent and the balance of the deionized water under the condition of high-speed dispersion, dispersing for 40min at a high speed, and filtering and packaging by using a 200-mesh filter screen to obtain the aqueous single-component fluorocarbon coating.
Comparative example 8
The preparation method of the water-based fluorocarbon coating comprises the following steps:
(1) preparing materials: preparing water-based emulsion fluorocarbon resin, titanium dioxide, a thickening agent, graphene dispersion liquid, a dispersing agent, a defoaming agent, a film forming auxiliary agent and deionized water according to the following weight ratio;
(2) mixing materials: firstly, adding the aqueous emulsion type fluorocarbon resin, the dispersing agent and part of deionized water with the set formula amount into a dispersion cylinder, fully stirring uniformly at a medium speed, respectively adding the defoaming agent, the titanium dioxide, the film-forming assistant, the thickening agent and the balance of the deionized water under the condition of high-speed dispersion, dispersing for 40min at a high speed, and filtering and packaging by using a 200-mesh filter screen to obtain the aqueous single-component fluorocarbon coating.
Comparative example 9
The preparation method of the water-based fluorocarbon coating comprises the following steps:
(1) preparing materials: preparing water-based emulsion fluorocarbon resin, titanium dioxide, a thickening agent, graphene dispersion liquid, a dispersing agent, a defoaming agent, a film forming auxiliary agent and deionized water according to the following weight ratio;
(2) mixing materials: firstly, adding the aqueous emulsion type fluorocarbon resin, the dispersing agent and part of deionized water with the set formula amount into a dispersion cylinder, fully stirring uniformly at a medium speed, respectively adding the defoaming agent, the titanium dioxide, the film-forming assistant, the thickening agent and the balance of the deionized water under the condition of high-speed dispersion, dispersing for 40min at a high speed, and filtering and packaging by using a 200-mesh filter screen to obtain the aqueous single-component fluorocarbon coating.
Comparative example 10
The preparation method of the water-based fluorocarbon coating comprises the following steps:
(1) preparing materials: preparing water-based emulsion fluorocarbon resin, titanium dioxide, a thickening agent, graphene dispersion liquid, a dispersing agent, a defoaming agent, a film forming auxiliary agent and deionized water according to the following weight ratio;
(2) mixing materials: firstly, adding the aqueous emulsion type fluorocarbon resin, the dispersing agent and part of deionized water with the set formula amount into a dispersion cylinder, fully stirring uniformly at a medium speed, respectively adding the defoaming agent, the titanium dioxide, the film-forming assistant, the thickening agent and the balance of the deionized water under the condition of high-speed dispersion, dispersing for 40min at a high speed, and filtering and packaging by using a 200-mesh filter screen to obtain the aqueous single-component fluorocarbon coating.
And (3) performance testing:
the paints of the above examples and comparative examples were drawn down using coaters of different specifications to give dry film thicknesses of 15 μm, 30 μm and 60 μm, respectively (3 panels were drawn down for each paint of the same film thickness). And (3) placing the sample plate in a space with the temperature of 20-35 ℃ and the humidity of 60-75%, and curing for 7 days, and then carrying out a cold-hot cycle test. Cold and hot cycle test parameters: and (4) one cycle of 4 hours at the temperature of between 20 ℃ below zero and 80 ℃, and the total testing time is 7 days, and the total time is 42 cold and hot cycles. And observing the cracking condition of the paint film after the paint film is subjected to thermal expansion and cold contraction. The experimental data are shown in table 1 below.
TABLE 1
Remarking: arranging damaged states of paint films: leveling without abnormity, less cracks, more cracks and severe cracking;
from the data in table 1, it can be seen that: in the component content range of the water-based paint, the addition of the graphene is beneficial to improving the anti-cracking capability of a paint film, and the anti-cracking capability of the paint film is synchronously increased along with the increase of the addition amount of the graphene; and the additive amount of the additive and the film forming additive are cooperated to improve the anti-cracking capability of the paint film.
The above description is only exemplary of the present application and should not be taken as limiting the present application, as any modification, equivalent replacement, or improvement made within the spirit and principle of the present application should be included in the protection scope of the present application.
Claims (10)
1. The water-based paint is characterized by comprising the following components in percentage by weight based on the total weight of the water-based paint as 100 percent:
2. the aqueous coating of claim 1, wherein the aqueous coating comprises:
3. the aqueous coating of claim 1 or 2, wherein the aqueous emulsion fluorocarbon resin is an alternating copolymer of a fluoroolefin and an alkyl vinyl ether.
4. The aqueous coating material according to claim 1 or 2, wherein the dispersant is an aqueous polymer dispersant compatible with the graphene dispersion liquid.
5. The aqueous coating according to claim 1 or 2, wherein the defoaming agent is a polyether-modified polysiloxane-based defoaming agent.
6. The aqueous coating of claim 1 or 2, wherein the coalescent includes at least one of an alcohol ester-based coalescent and an alcohol ether-based coalescent.
7. The aqueous coating of claim 1 or 2, wherein the thickener comprises at least one of a polyurethane-based thickener and a cellulose ether-based thickener.
8. The preparation method of the water-based paint is characterized by comprising the following steps:
weighing the components according to the formula of the water-based paint of any one of claims 1 to 7;
and mixing the aqueous emulsion fluorocarbon resin, the graphene dispersion liquid, the dispersing agent, the defoaming agent, the titanium dioxide, the film forming aid, the thickening agent and the water to obtain the aqueous coating.
9. Use of the aqueous coating according to any one of claims 1 to 7 and/or the aqueous coating obtained by the process for the preparation of an aqueous coating according to claim 8 on outdoor construction substrate surfaces.
10. The use of claim 9, wherein the aqueous coating is applied to the surface of the outdoor construction substrate and dried at a relative humidity of 75% or less and a temperature of 0 ℃ to 50 ℃ for 24 to 48 hours to form a coating.
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN112080175A (en) * | 2020-09-25 | 2020-12-15 | 佛山市海佳鑫五金制品有限公司 | Water-based paint replacing triacid electrochemical process effect |
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