CN111518463A - High-gloss water-based middle coating for rail transit and preparation method and application thereof - Google Patents
High-gloss water-based middle coating for rail transit and preparation method and application thereof Download PDFInfo
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- CN111518463A CN111518463A CN202010403643.6A CN202010403643A CN111518463A CN 111518463 A CN111518463 A CN 111518463A CN 202010403643 A CN202010403643 A CN 202010403643A CN 111518463 A CN111518463 A CN 111518463A
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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
- C09D175/00—Coating compositions based on polyureas or polyurethanes; Coating compositions based on derivatives of such polymers
- C09D175/04—Polyurethanes
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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
- C09D7/63—Additives non-macromolecular organic
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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
- C09D7/80—Processes for incorporating ingredients
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- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08L—COMPOSITIONS OF MACROMOLECULAR COMPOUNDS
- C08L2205/00—Polymer mixtures characterised by other features
- C08L2205/02—Polymer mixtures characterised by other features containing two or more polymers of the same C08L -group
- C08L2205/025—Polymer mixtures characterised by other features containing two or more polymers of the same C08L -group containing two or more polymers of the same hierarchy C08L, and differing only in parameters such as density, comonomer content, molecular weight, structure
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- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08L—COMPOSITIONS OF MACROMOLECULAR COMPOUNDS
- C08L2205/00—Polymer mixtures characterised by other features
- C08L2205/03—Polymer mixtures characterised by other features containing three or more polymers in a blend
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Abstract
The invention relates to the technical field of water-based floating paints, in particular to a high-gloss water-based floating paint for rail transit, a preparation method thereof and application thereof in rail transit vehicle coating, wherein the paint comprises a component A and a component B, and the weight ratio of the component A to the component B is 9: the paint comprises a component A, a component B and a component C, wherein the component A comprises resin A, resin B, a dispersing agent, a defoaming agent, a pigment, a filler, a film-forming aid, an anti-settling agent, a thickening agent, deionized water and a water-based zinc stearate emulsion, the resin A is Corsika 2457 resin, the resin B is Corsika 2695 resin, and the component B comprises a curing agent and a film-forming aid; the preparation method comprises the steps of grinding the color paste, preparing the component A, preparing the component B and mixing the component A and the component B. This floating coat coating gloss is high, possesses good polishing performance simultaneously, and the back gloss of polishing disappears, and the condition of polishing is convenient for inspect, promotes inspection efficiency, and the guarantee inspection accuracy to reduce rail transit vehicle's accident risk.
Description
Technical Field
The invention relates to the technical field of water-based floating coat paint, in particular to high-gloss water-based floating coat paint for rail transit and a preparation method and application thereof.
Background
The water-based intermediate coating is an intermediate coating widely applied to rail transit vehicles at present, and mainly has the effects of enhancing the adhesive force between a putty layer and a finish coating and filling gaps left after putty construction and polishing. Because the auxiliary agent contained in the intermediate coating can reduce the adhesive force between the intermediate coating and the finish paint, a polishing link can be added during construction.
The traditional middle coating for rail transit is generally low in glossiness which is generally below 20 degrees, appearance changes of the coating before and after polishing are not obvious, surface conditions are difficult to distinguish after polishing is completed, difficulty in an inspection process is high, misjudgment is prone to occurring, adhesion of finish paint is poor, service life of rail transit vehicles is affected, and maintenance cost is increased.
Therefore, the water-based intermediate coating for rail transit, which can conveniently check whether the intermediate coating is polished, and the preparation method and the application thereof are necessary.
Disclosure of Invention
The invention provides a high-gloss water-based floating coat paint for rail transit, a preparation method and application thereof, aiming at the problem that the polishing integrity of the floating coat is difficult to check because the glossiness of the floating coat paint for the conventional rail transit is generally low.
In a first aspect, the invention provides a high-gloss water-based floating coating for rail transit, which comprises a component A and a component B, wherein the weight ratio of the component A to the component B is 9:1,
the component A comprises resin A, resin B, a dispersant, a defoaming agent, pigment, filler, a film-forming additive, an anti-settling agent, a thickening agent, deionized water and a water-based zinc stearate emulsion,
the resin A is a Kesimao 2457 resin,
the resin B is Kostew 2695 resin,
the component B comprises a curing agent and a film-forming assistant.
Further, the component A comprises 20-30 parts of resin A, 1-20 parts of resin B, 0.05-3 parts of dispersing agent, 0.05-0.5 part of defoaming agent, 2-20 parts of pigment, 2-40 parts of filler, 0.5-10 parts of film forming additive, 0.05-2 parts of anti-settling agent, 0.05-1 part of thickening agent, 5-20 parts of deionized water and 0.05-1 part of water-based zinc stearate emulsion,
in the component B, the weight ratio of the curing agent to the film-forming assistant is 5-8: 2 to 5.
Further, the component A comprises 30 parts of resin A, 12 parts of resin B, 2 parts of dispersant, 0.3 part of defoamer, 10 parts of pigment, 29 parts of filler, 6 parts of film forming additive, 2 parts of anti-settling agent, 0.5 part of thickener, 8.5 parts of deionized water and 0.5 part of waterborne zinc stearate emulsion,
in the component B, the weight ratio of the curing agent to the film-forming assistant is 17: 8.
furthermore, in the component A, the dispersant is a nonionic dispersant, such as BYK-2012 dispersant, and the nonionic dispersant has the characteristics of reducing the viscosity of the system and better dispersing the pigment and filler in the component A;
the defoaming agent is a silicon-containing defoaming agent, preferably Tego901 and Tego825, the Tego901 defoaming agent cannot be demulsified in the grinding process and can effectively eliminate large bubbles, and the Tego825 defoaming agent can effectively eliminate microbubbles in the film forming process;
the pigment is one or a combination of inorganic pigment and organic pigment, specifically, color matching is carried out according to a national standard color card, the inorganic pigment and the organic pigment are produced domestically except carbon black, and the carbon black is carbon black of Mitsubishi corporation of Japan;
the filler is an inorganic filler, the inorganic filler comprises one or more of barium sulfate, talcum powder and sericite, the filler mainly functions in increasing the film thickness and filling, and the talcum powder can also increase the sanding property after film forming;
the film-forming auxiliary agent is an alcohol ether solvent, the alcohol ether solvent comprises one or more of ethylene glycol butyl ether, diethylene glycol methyl ether and alcohol ester-12, and the film-forming auxiliary agent has the advantages of reducing the temperature required by the paint when a paint film is formed, improving the flexibility of the paint film and increasing the leveling property of the paint film;
the anti-settling agent is polyurethane anti-settling agent, such as OMG R-299, and the polyurethane anti-settling agent has the function of improving the storage time of the coating and can not reduce the gloss of the coating after the coating forms a paint film;
the thickener is a polyurethane associative thickener, such as BYK-420, and has the advantages of improving the viscosity of the paint under high shear and facilitating construction;
the water-based zinc stearate emulsion is an expensive new material X-36, and has good polishing performance after a paint film is formed by the paint under the condition of not reducing the gloss.
Furthermore, in the component B, the curing agent is an isocyanate curing agent, such as a Corsikon 2547 curing agent, and the isocyanate curing agent has the advantage of being copolymerized with the component A to form a paint film;
the film-forming assistant is propylene glycol diacetate which is characterized by not reacting with the component A, increasing the contact area of the isocyanate curing agent and the component A and improving the reaction activity.
In a second aspect, the invention provides a preparation method of the high-gloss water-based floating coating for rail transit, which comprises the following steps:
(1) grinding color paste: pouring deionized water into a grinding cylinder, sequentially adding a dispersing agent, a defoaming agent, a pigment, a filler, a film forming aid and an anti-settling agent under the stirring condition, dispersing for 10-15 min at 2000-2500 r/min, adding zirconium beads for grinding, and stopping grinding when the fineness is less than 20 micrometers for later use;
(2) preparation of component A: pouring resin A and resin B into a production cylinder 1, controlling the rotating speed to be 1000-1500 r/min under the stirring condition, adding the rest film-forming auxiliary agent of the component A for 5min, increasing the rotating speed to be 2000-2500 r/min for dispersing for 10-15 min, reducing the speed to be 500-1000 r/min, slowly adding color paste, the rest defoaming agent and the water-based zinc stearate emulsion, adjusting the rotating speed to be 2000-2500 r/min for dispersing for 20min, and adding a thickening agent and the rest deionized water for adjusting the viscosity to obtain the component A;
(3) preparation of component B: adding the film forming auxiliary agent in the component B into a production cylinder 2, adding a curing agent at the rotating speed of 500-1000 r/min, and stirring for 5min to obtain a component B;
(4) mixing the component A and the component B: and (3) mixing the component A and the component B in a production cylinder 3 according to the weight ratio of 9:1, and stirring for 10min at the speed of 500r/min to prepare the high-gloss water-based intermediate coating.
Further, the preparation method comprises the following steps:
(1) grinding color paste: pouring 5-7 parts of deionized water into a grinding cylinder, sequentially adding 0.05-3 parts of dispersing agent, 0.05-0.2 part of defoaming agent, 2-20 parts of pigment, 2-40 parts of filler, 0.5-2 parts of film forming additive and 0.05-2 parts of anti-settling agent under the condition of stirring, dispersing for 10-15 min at 2000-2500 r/min, adding zirconium beads for grinding, and stopping when the fineness is less than 20 microns for later use;
(2) preparation of component A: pouring 20-30 parts of resin A and 1-20 parts of resin B into a production cylinder 1, controlling the rotating speed to be 1000-1500 r/min under the stirring condition, adding the rest of the film-forming auxiliary agent of the component A for 5min, increasing the rotating speed to be 2000-2500 r/min after the film-forming auxiliary agent is added, dispersing for 10-15 min, reducing the speed to be 500-1000 r/min, slowly adding 0.05-1 part of color paste, the rest of the defoaming agent and the water-based zinc stearate emulsion, adjusting the rotating speed to be 2000-2500 r/min, dispersing for 20min, adding 0.05-1 part of thickening agent and the rest of deionized water, and adjusting the viscosity to obtain the component A;
(3) preparation of component B: adding the film forming aid in the component B into a production cylinder 2, and adding a curing agent at a rotating speed of 500-1000 r/min, wherein the weight ratio of the curing agent to the film forming aid is 5-8: 2-5, stirring for 5min to obtain a component B;
(4) mixing the component A and the component B: and (3) mixing the component A and the component B in a production cylinder 3 according to the weight ratio of 9:1, and stirring for 10min at the speed of 500r/min to prepare the high-gloss water-based intermediate coating.
Further, the preparation method comprises the following steps:
(1) grinding color paste: pouring 7 parts of deionized water into a grinding cylinder, sequentially adding 2 parts of dispersing agent, 0.2 part of defoaming agent, 10 parts of pigment, 29 parts of filler, 2 parts of film forming additive and 2 parts of anti-settling agent under the condition of stirring, dispersing for 10-15 min at 2000-2500 r/min, adding zirconium beads, grinding, and stopping when the fineness is less than 20 mu m for later use;
(2) preparation of component A: pouring 30 parts of resin A and 12 parts of resin B into a production cylinder 1, adding 4 parts of residual film-forming aid for 5min under the stirring condition of controlling the rotating speed to be 1000-1500 r/min, increasing the rotating speed to be 2000-2500 r/min after the film-forming aid is added, dispersing for 10-15 min, reducing the speed to be 500-1000 r/min, slowly adding color paste, 0.1 part of residual defoaming agent and 0.5 part of aqueous zinc stearate emulsion, adjusting the rotating speed to be 2000-2500 r/min, dispersing for 20min, adding 0.5 part of thickening agent, and adjusting the viscosity of 1.5 parts of residual deionized water to obtain a component A;
(3) preparation of component B: adding the film-forming aid in the component B into a production cylinder 2, and adding a curing agent at a rotating speed of 500-1000 r/min, wherein the weight ratio of the curing agent to the film-forming aid is 17: 8, stirring for 5min to obtain a component B;
(4) mixing the component A and the component B: and (3) mixing the component A and the component B in a production cylinder 3 according to the weight ratio of 9:1, and stirring for 10min at the speed of 500r/min to prepare the high-gloss water-based intermediate coating.
Further, the defoaming agent added in the step (1) is Tego901, and the defoaming agent added in the step (2) is Tego 825.
In a third aspect, the invention provides an application of the high-gloss water-based floating coat paint for rail transit in rail transit vehicle coating.
Further, the application is that the high-gloss water-based intermediate coating is used for coating rail transit vehicles and polishing coatings, and the polishing degree is judged according to the gloss change of the coatings.
The beneficial effect of the invention is that,
the invention provides a high-gloss water-based floating coat paint for rail transit and a preparation method thereof, and by utilizing the characteristic that the gloss of the paint changes before and after polishing, technicians in the field can more quickly and easily judge the polishing condition of the coating, simplify the existing coating inspection into the observation of whether the gloss is reduced by naked eyes by means of professional instruments, ensure the speed of the inspection process and the accuracy of the inspection result, and further improve the later-stage construction efficiency;
the Coxiella 2457 resin used in the coating component A of the invention has the characteristics of high film-forming Tg and quick drying; the kesichu 2695 resin has high gloss and good leveling property; the water-based zinc stearate emulsion can ensure that the paint has good polishing performance after being formed into a paint film under the condition of not reducing the gloss.
Detailed Description
In order to make those skilled in the art better understand the technical solutions in the present invention, 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.
Example 1
A high-gloss water-based floating coat paint for rail transit comprises a component A and a component B, wherein the weight ratio of the component A to the component B is 9:1, the dosage of the raw materials of the component A and the component B is shown in the following table 1,
the preparation method of the intermediate coating comprises the following steps:
(1) grinding color paste: pouring 7 parts of deionized water into a grinding cylinder, sequentially adding 2 parts of dispersing agent, 0.2 part of Tego901 defoaming agent, 10 parts of pigment, 29 parts of filler, 2 parts of film forming additive and 2 parts of anti-settling agent under the condition of stirring, dispersing for 15min at 2500r/min, adding zirconium beads, grinding, and stopping when the fineness is less than 20 mu m for later use;
(2) preparation of component A: pouring 30 parts of resin A and 12 parts of resin B into a production cylinder 1, adding 4 parts of residual film-forming aid for 5min under the stirring condition of controlling the rotating speed to be 1500r/min, increasing the rotating speed to be 2500r/min to disperse for 15min after the film-forming aid is added, reducing the speed to be 1000r/min, slowly adding 0.1 part of color paste, 0.5 part of Tego825 defoaming agent and 0.5 part of aqueous zinc stearate emulsion, adjusting the rotating speed to be 2500r/min to disperse for 20min, adding 0.5 part of thickening agent and 1.5 parts of residual deionized water to adjust the viscosity, and obtaining a component A;
(3) preparation of component B: adding the film-forming aid in the component B into a production cylinder 2, and adding a curing agent at the rotating speed of 1000r/min, wherein the weight ratio of the curing agent to the film-forming aid is 17: 8, stirring for 5min to obtain a component B;
(4) mixing the component A and the component B: and (3) mixing the component A and the component B in a production cylinder 3 according to the weight ratio of 9:1, and stirring for 10min at the speed of 500r/min to prepare the high-gloss water-based intermediate coating.
Comparative example 1
A high-gloss water-based floating coat paint for rail transit comprises a component A and a component B, wherein the weight ratio of the component A to the component B is 9:1, the dosage of the raw materials of the component A and the component B is shown in the following table 1,
the preparation method of the intermediate coating comprises the following steps:
(1) grinding color paste: pouring 7 parts of deionized water into a grinding cylinder, sequentially adding 2 parts of dispersing agent, 0.2 part of Tego901 defoaming agent, 10 parts of pigment, 29 parts of filler, 2 parts of film forming additive and 2 parts of anti-settling agent under the condition of stirring, dispersing for 15min at 2500r/min, adding zirconium beads, grinding, and stopping when the fineness is less than 20 mu m for later use;
(2) preparation of component A: pouring 30 parts of resin A and 12 parts of resin B into a production cylinder 1, adding 4 parts of residual film-forming aid for 5min under the stirring condition of controlling the rotating speed to be 1500r/min, increasing the rotating speed to be 2500r/min after the film-forming aid is added, dispersing for 15min, reducing the speed to be 1000r/min, slowly adding 0.5 part of color paste, 0.1 part of silica sol and 0.1 part of Tego825 defoaming agent, adjusting the rotating speed to be 2500r/min, dispersing for 20min, adding 0.5 part of thickening agent and 1.5 parts of residual deionized water, and adjusting the viscosity to obtain a component A;
(3) preparation of component B: adding the film-forming aid in the component B into a production cylinder 2, and adding a curing agent at the rotating speed of 1000r/min, wherein the weight ratio of the curing agent to the film-forming aid is 17: 8, stirring for 5min to obtain a component B;
(4) mixing the component A and the component B: and (3) mixing the component A and the component B in a production cylinder 3 according to the weight ratio of 9:1, and stirring at 500r/min for 10min to prepare the water-based floating coat.
Comparative example 2
A high-gloss water-based floating coat paint for rail transit comprises a component A and a component B, wherein the weight ratio of the component A to the component B is 9:1, the dosage of the raw materials of the component A and the component B is shown in the following table 1,
the preparation method of the intermediate coating comprises the following steps:
(1) grinding color paste: pouring 7 parts of deionized water into a grinding cylinder, sequentially adding 2 parts of dispersing agent, 0.2 part of Tego901 defoaming agent, 10 parts of pigment, 29 parts of filler, 2 parts of film forming additive and 2 parts of anti-settling agent under the condition of stirring, dispersing for 15min at 2500r/min, adding zirconium beads, grinding, and stopping when the fineness is less than 20 mu m for later use;
(2) preparation of component A: pouring 42 parts of resin into a production cylinder 1, adding 4 parts of residual film-forming auxiliary agent for 5min under the stirring condition of controlling the rotating speed to be 1500r/min, increasing the rotating speed to be 2500r/min after the film-forming auxiliary agent is added, dispersing for 15min, reducing the speed to be 1000r/min, slowly adding color paste, 0.1 part of Tego825 defoaming agent and 0.5 part of water-based zinc stearate emulsion, adjusting the rotating speed to be 2500r/min, dispersing for 20min, adding 0.5 part of thickening agent and 1.5 parts of residual deionized water, and adjusting the viscosity to obtain a component A;
(3) preparation of component B: adding the film-forming aid in the component B into a production cylinder 2, and adding a curing agent at the rotating speed of 1000r/min, wherein the weight ratio of the curing agent to the film-forming aid is 17: 8, stirring for 5min to obtain a component B;
(4) mixing the component A and the component B: and (3) mixing the component A and the component B in a production cylinder 3 according to the weight ratio of 9:1, and stirring for 10min at the speed of 500r/min to prepare the high-gloss water-based intermediate coating.
TABLE 1 amount of each raw material of component A and component B
Comparative example 3
The comparative example 3 is a conventional water-based intermediate coat for rail transit, which comprises a component A, a component B and a component C, wherein the component A comprises the following raw materials in parts by weight:
47 parts of resin (Japan empire chemical KC-593), 0.5 part of dispersant (BYK-190), 0.5 part of defoamer (Tego 901), 0.5 part of wetting agent (BYK-346), 15 parts of pigment (titanium dioxide), 18 parts of filler (comprising 5 parts of barium sulfate, 3 parts of talcum powder and 10 parts of mica powder), 5 parts of film-forming assistant (ethylene glycol monobutyl ether), 0.5 part of anti-settling agent (Delume LT), 1 part of thickener (BYK-420), 10 parts of deionized water and 2 parts of new silica sol (Baite SS 3010);
the component B comprises the following raw materials in parts by weight:
50 parts of curing agent (emperor chemical DNW-5500 ZS);
the component C comprises the following raw materials in parts by weight:
50 parts of deionized water;
the preparation method of the intermediate coating comprises the following steps:
(1) grinding color paste: starting stirring, sequentially adding 0.5 part of dispersing agent, 10 parts of deionized water, 15 parts of pigment, 18 parts of filler, 0.5 part of anti-settling agent and 0.5 part of defoaming agent into a reaction kettle, controlling the rotating speed to be 1500-2000 rpm/min, and grinding the mixture for 20-40 min by using zirconium beads until the fineness is 15-20 mu m to obtain color paste;
(2) preparation of component A: adding 47 parts of resin into a reaction kettle, slowly adding 5 parts of a film-forming assistant, controlling the rotating speed to be 1000-1500 rpm/min, stirring for 10-15 min, continuously mixing the prepared color paste into the reaction kettle, controlling the rotating speed to be 1000-1500 rpm/min, stirring for 10-15 min, sequentially adding 2 parts of silica sol, 0.5 part of wetting agent and 1 part of thickening agent under the stirring condition, controlling the rotating speed to be 1500-2000 rpm/min, and stirring for 20-25 min to obtain a prepared paint;
(3) mixing the component B and the component C: 50 parts of curing agent is filled into a packaging barrel 1 and kept stand, 50 parts of deionized water is filled into a packaging barrel 2 and kept stand, the packaging barrel 1 and the materials of the packaging barrel 2 are mixed in a packaging barrel 3, and the rotation speed is controlled to be 500-1000 rpm/min for stirring for 5-10 min;
(4) mixing the component A, the component B and the component C: and (3) slowly adding the curing agent part mixed in the step (3) into the component A in the step (2) under stirring, controlling the rotating speed to be 500-1000 rpm/min, stirring for 15-20 min, and filtering to obtain the water-based intermediate coating for rail transit.
Test example 1
The intercoat coatings prepared in example 1 and comparative examples 1-3, and two commercial intercoat coating products were subjected to performance tests, the results of which are shown in table 2 below.
TABLE 2 Performance test results for intercoat coatings
As can be seen from Table 2, the high-gloss water-based intermediate coating provided by the invention can meet the use requirements in terms of adhesive force, bending property and impact resistance, and the polishing time is equivalent to that of the existing zero-gloss intermediate coating;
the two resins of Kesimong 2457 and Kesimong 2695 can obviously improve the glossiness of the coating, and the coating can have a highlight effect which is not available in a commercially available product after being used, so that technicians can conveniently judge the surface condition during polishing, the detection difficulty is reduced, and misjudgment is avoided; on the other hand, the scientific wound 2457 and the scientific wound 2695 can also improve the cupping performance of the coating;
the water-based zinc stearate emulsion used in the high-gloss water-based floating coat paint can improve the polishing performance of the paint and shorten the polishing completion time on the premise of ensuring the gloss.
Although the present invention has been described in detail by way of preferred embodiments, the present invention is not limited thereto. Various equivalent modifications or substitutions can be made on the embodiments of the present invention by those skilled in the art without departing from the spirit and scope of the present invention, and these modifications or substitutions are within the scope of the present invention/any person skilled in the art can easily conceive of the changes or substitutions within the technical scope of the present invention. Therefore, the protection scope of the present invention shall be subject to the protection scope of the claims.
Claims (9)
1. The high-gloss water-based floating coat paint for rail transit is characterized by comprising a component A and a component B, wherein the weight ratio of the component A to the component B is 9:1,
the component A comprises resin A, resin B, a dispersant, a defoaming agent, pigment, filler, a film-forming additive, an anti-settling agent, a thickening agent, deionized water and a water-based zinc stearate emulsion,
the resin A is a Kesimao 2457 resin,
the resin B is Kostew 2695 resin,
the component B comprises a curing agent and a film-forming assistant.
2. The high-gloss water-based middle coating of claim 1, wherein the component A comprises 20-30 parts of resin A, 1-20 parts of resin B, 0.05-3 parts of dispersing agent, 0.05-0.5 part of defoaming agent, 2-20 parts of pigment, 2-40 parts of filler, 0.5-10 parts of film forming additive, 0.05-2 parts of anti-settling agent, 0.05-1 part of thickening agent, 5-20 parts of deionized water and 0.05-1 part of water-based zinc stearate emulsion,
in the component B, the weight ratio of the curing agent to the film-forming assistant is 5-8: 2 to 5.
3. The high-gloss water-based middle coating of claim 2, wherein the component A comprises 30 parts of resin A, 12 parts of resin B, 2 parts of dispersing agent, 0.3 part of defoaming agent, 10 parts of pigment, 29 parts of filler, 6 parts of film forming additive, 2 parts of anti-settling agent, 0.5 part of thickening agent, 8.5 parts of deionized water and 0.5 part of water-based zinc stearate emulsion,
in the component B, the weight ratio of the curing agent to the film-forming assistant is 17: 8.
4. the high gloss aqueous basecoat of claim 1 wherein said component A is a nonionic dispersant,
the defoaming agent is a silicon-containing defoaming agent,
the pigment is one or the combination of more of inorganic pigment and organic pigment,
the filler is an inorganic filler,
the film-forming auxiliary agent is an alcohol ether solvent,
the anti-settling agent is a polyurethane anti-settling agent,
the thickener is polyurethane associative thickener;
in the component B, the curing agent is isocyanate curing agent, and the film-forming auxiliary agent is propylene glycol diacetate.
5. The high gloss aqueous basecoat of claim 4 wherein said defoamer comprises Tego901 and Tego 825.
6. The preparation method of the high-gloss water-based floating coating for rail transit according to any one of claims 1 to 5, characterized by comprising the following steps:
(1) grinding color paste: pouring deionized water into a grinding cylinder, sequentially adding a dispersing agent, a defoaming agent, a pigment, a filler, a film forming aid and an anti-settling agent under the stirring condition, dispersing for 10-15 min at 2000-2500 r/min, adding zirconium beads for grinding, and stopping grinding when the fineness is less than 20 micrometers for later use;
(2) preparation of component A: pouring resin A and resin B into a production cylinder 1, controlling the rotating speed to be 1000-1500 r/min under the stirring condition, adding the rest film-forming auxiliary agent of the component A for 5min, increasing the rotating speed to be 2000-2500 r/min for dispersing for 10-15 min, reducing the speed to be 500-1000 r/min, slowly adding color paste, the rest defoaming agent and the water-based zinc stearate emulsion, adjusting the rotating speed to be 2000-2500 r/min for dispersing for 20min, and adding a thickening agent and the rest deionized water for adjusting the viscosity to obtain the component A;
(3) preparation of component B: adding the film forming auxiliary agent in the component B into a production cylinder 2, adding a curing agent at the rotating speed of 500-1000 r/min, and stirring for 5min to obtain a component B;
(4) mixing the component A and the component B: and (3) mixing the component A and the component B in a production cylinder 3 according to the weight ratio of 9:1, and stirring for 10min at the speed of 500r/min to prepare the high-gloss water-based intermediate coating.
7. The method for preparing the high-gloss water-based floating paint according to claim 6, wherein the defoaming agent added in the step (1) is Tego901, and the defoaming agent added in the step (2) is Tego 825.
8. The use of the high-gloss water-based intermediate coating for rail transit according to any one of claims 1 to 5 for rail transit vehicle coating.
9. The use according to claim 8, wherein the use is for coating rail transit vehicles with the high gloss water based midcoat paint and sanding the coating, the degree of sanding being judged from the change in gloss of the coating.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
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| CN202010403643.6A CN111518463A (en) | 2020-05-13 | 2020-05-13 | High-gloss water-based middle coating for rail transit and preparation method and application thereof |
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| Application Number | Priority Date | Filing Date | Title |
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| CN202010403643.6A CN111518463A (en) | 2020-05-13 | 2020-05-13 | High-gloss water-based middle coating for rail transit and preparation method and application thereof |
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| CN111518463A true CN111518463A (en) | 2020-08-11 |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113045989A (en) * | 2021-03-17 | 2021-06-29 | 山东七维新材料有限公司 | High-toughness quick-drying water-based primer surfacer for rail transit and preparation method thereof |
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2020
- 2020-05-13 CN CN202010403643.6A patent/CN111518463A/en not_active Withdrawn
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113045989A (en) * | 2021-03-17 | 2021-06-29 | 山东七维新材料有限公司 | High-toughness quick-drying water-based primer surfacer for rail transit and preparation method thereof |
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Application publication date: 20200811 |