CN110964426A - Ultraviolet-resistant vehicle paint and preparation method thereof - Google Patents
Ultraviolet-resistant vehicle paint and preparation method thereof Download PDFInfo
- Publication number
- CN110964426A CN110964426A CN201911171749.1A CN201911171749A CN110964426A CN 110964426 A CN110964426 A CN 110964426A CN 201911171749 A CN201911171749 A CN 201911171749A CN 110964426 A CN110964426 A CN 110964426A
- Authority
- CN
- China
- Prior art keywords
- parts
- agent
- ultraviolet
- paint
- titanium dioxide
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Pending
Links
Classifications
-
- 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
-
- 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
-
- 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
- C09D7/62—Additives non-macromolecular inorganic modified by treatment with other compounds
-
- 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
- C09D7/65—Additives macromolecular
-
- 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
- C09D7/70—Additives characterised by shape, e.g. fibres, flakes or microspheres
-
- 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
-
- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08L—COMPOSITIONS OF MACROMOLECULAR COMPOUNDS
- C08L2201/00—Properties
- C08L2201/08—Stabilised against heat, light or radiation or oxydation
Landscapes
- Chemical & Material Sciences (AREA)
- Life Sciences & Earth Sciences (AREA)
- Engineering & Computer Science (AREA)
- Materials Engineering (AREA)
- Wood Science & Technology (AREA)
- Organic Chemistry (AREA)
- Inorganic Chemistry (AREA)
- Paints Or Removers (AREA)
Abstract
The invention relates to the field of industrial coatings, in particular to an ultraviolet-resistant vehicle paint and a preparation method thereof. The water-based paint comprises the following components: the paint comprises a water-based hydroxyl polyacrylic acid dispersoid, a pH neutralizer, a film-forming aid, deionized water, polytetrafluoroethylene micro powder, a benzotriazole ultraviolet absorbent, titanium dioxide, a flame retardant, a pigment, barium sulfate, bentonite, a thickening agent, a water-based polyurethane curing agent, propylene glycol diacetate, a dispersing agent, a defoaming agent, a wetting and leveling agent and an antibacterial agent. The automobile paint has good ultraviolet resistance, good luster, decoration and hydrophobicity, low VOC and low smell, and is environment-friendly.
Description
Technical Field
The invention relates to the field of industrial coatings, in particular to an ultraviolet-resistant vehicle paint and a preparation method thereof.
Background
The ultraviolet ray has high energy, can destroy the composition of organic matters and accelerate the aging of the organic matters, so that the traditional automobile paint can generate undesirable phenomena such as color change, light loss and the like under the irradiation of sunlight. On the other hand, the traditional automobile paint has high VOC content and is harmful to the environment, generally has no high temperature resistance, and can emit pungent odor and even burn even under the irradiation of sunlight due to high temperature.
Disclosure of Invention
The invention provides an anti-ultraviolet vehicle paint, aiming at the problems that the existing vehicle paint is easy to age and cannot resist high temperature under ultraviolet rays.
The invention also provides a preparation method of the ultraviolet-resistant automobile paint.
In order to achieve the purpose of the invention, the embodiment of the invention adopts the following technical scheme:
the anti-ultraviolet vehicle paint comprises the following raw materials in parts by weight: 60-80 parts of water-based hydroxyl polyacrylic acid dispersoid, 1-3 parts of pH neutralizer, 3-6 parts of film-forming additive, 15-30 parts of deionized water, 4-8 parts of polytetrafluoroethylene micro powder, 1-3.5 parts of benzotriazole ultraviolet absorbent, 1-2 parts of titanium dioxide, 2-4 parts of flame retardant, 4-6 parts of pigment, 3-5 parts of barium sulfate, 1-3 parts of bentonite, 1-2 parts of thickener, 55-105 parts of waterborne polyurethane curing agent, 20-40 parts of Propylene Glycol Diacetate (PGDA), 1-3 parts of dispersant, 1-3 parts of defoaming agent, 3-6 parts of wetting and leveling agent and 1-3 parts of antibacterial agent.
The automobile paint has excellent ultraviolet resistance, flame retardance, environmental protection and good aging resistance. The aqueous hydroxyl polyacrylic acid dispersoid and the aqueous polyurethane curing agent are matched, so that the paint liquid is suitable for drying at room temperature and forced drying (such as drying at 60-80 ℃), various drying requirements after spraying of the automobile paint can be met, and a cured paint film has good hardness and mechanical properties and excellent weather resistance. The waterborne hydroxyl polyacrylic acid dispersoid is preferably 3AH0545W in the chemical industry of the same morals, and the dispersoid can ensure that a paint film has high gloss and high hardness after being matched with other components in the vehicle paint, has strong universality, excellent chemical resistance, water resistance, weather resistance, adhesive force, bursting foam performance, leveling performance and mechanical performance and long activation period, and is suitable for being used as the vehicle paint.
The benzotriazole ultraviolet absorbent has a high light absorption index within 300-385 nm, can convert absorbed light energy into heat energy, is based on tautomers, has a high interconversion effect, and can be repeated infinitely, so that the ultraviolet absorbent has very good light stability and is safe to apply. The invention adopts the benzotriazole ultraviolet absorbent to absorb ultraviolet, can effectively prevent the surface of the coated substrate from losing light, aging, cracking and the like, and plays a vital role in the ultraviolet resistance of the automobile paint. In the present invention, at least one of 2- [ 2-hydroxy-3, 5-bis (1, 1-dimethylpropylphenyl) ] -2H-benzotriazole (UV-328) and 2- [ 2-hydroxy-5-tert-octylphenyl ] benzotriazole (UV-329) is preferably used.
The polytetrafluoroethylene micro powder has good mechanical property, electrical property and wide use temperature range (-200 ℃ to +260 ℃), and the extremely high bond energy (460KJ/mol) between carbon atoms and fluorine atoms in molecules ensures that the polytetrafluoroethylene micro powder has excellent chemical resistance, weather resistance, good non-stick property and lubricity, has extremely smooth property, anti-caking property and excellent stain resistance in the vehicle paint, and can improve the fluidity of paint liquid in a spraying device. After the polytetrafluoroethylene micro powder is matched with other components in the vehicle paint, the hardness of a paint film is high, and the scratch resistance can pass the test of the hardness of a 3H pencil. Preferably, the parylene micro wax W-8006 has good dispersibility and uniform fineness and is low in dosage.
In the vehicle paint, the aqueous hydroxy polyacrylic acid dispersoid can generate lipid substances with benzotriazole ultraviolet absorbers, and polytetrafluoroethylene and the lipid substances can generate hybrid copolymerization reaction to form a copolymer. The copolymer not only can enable the paint to have weather resistance which is obviously superior to that of the traditional paint, but also greatly improves the glossiness and the anti-oxidation yellowing performance, and can avoid the influence on the appearance caused by the color difference generated in the use process of the automobile paint.
The bentonite can play a high-efficiency thickening effect in the automobile paint, can provide thermal stability of viscosity and give thixotropy to the automobile paint, and has the advantages of electrolyte stability, emulsion stability, prevention of hard precipitation of pigments or fillers, reduction of water shrinkage, and minimization of color separation and blooming phenomena. Preferably, Haimines Bentone LT.
The coating is compounded by the components, so that the obtained automobile paint can form a paint film with good ultraviolet resistance, high gloss, high decoration and high hydrophobicity, and is low in VOC and low in smell, and is an environment-friendly coating.
Preferably, the water-based paint comprises the following raw materials in parts by weight: 70 parts of aqueous hydroxyl polyacrylic acid dispersoid, 2 parts of pH neutralizer, 4.8 parts of film-forming assistant, 24 parts of deionized water, 6 parts of polytetrafluoroethylene micro powder, 2.8 parts of benzotriazole ultraviolet absorbent, 1.5 parts of titanium pigment, 3.1 parts of flame retardant, 5.1 parts of pigment, 4 parts of barium sulfate, 2 parts of bentonite, 1.6 parts of thickening agent, 81 parts of aqueous polyurethane curing agent, 30 parts of propylene glycol diacetate, 2 parts of dispersing agent, 2 parts of defoaming agent, 4.5 parts of wetting and leveling agent and 2 parts of antibacterial agent.
Preferably, the film-forming aid is propylene glycol phenyl ether (PPH), has high boiling point, no toxicity, environmental protection, good miscibility, excellent coalescence and coupling capacity, obvious effects of improving the leveling property, the gloss and the fullness of a paint film, moderate volatilization rate and no problem of overhigh VOC (volatile organic compound).
Preferably, the titanium dioxide is rutile type nano titanium dioxide with the mass percentage content of titanium dioxide more than or equal to 99% and oil absorbability less than or equal to 23% w/w. The rutile type nano titanium dioxide has an excellent ultraviolet shielding function, can greatly improve the ultraviolet resistance of a paint film in the vehicle paint with the formula, can reduce the aging of the paint film, can also improve the weather resistance, the dispersibility and the curing property of the paint film, and is non-toxic and pollution-free. Meanwhile, the rutile type nano titanium dioxide can endow car paint with gorgeous color after being matched with the pigment, and a paint film has high gloss. Preferably, Dupont rutile type titanium dioxide R706.
Preferably, the flame retardant is a mixture of asbestos and glass fiber powder in a mass ratio of 0.8-1.2: 1. The glass fiber powder has good insulation property, strong heat resistance, good corrosion resistance and high mechanical strength, but has brittle property and poor wear resistance, can make up the defect after being used with asbestos, and simultaneously plays better roles of fire resistance, electrical insulation and heat insulation.
Preferably, the waterborne polyurethane curing agent is 50-90 parts of Japanese NPU CORONATE-HXR and 5-15 parts of German Kakosa Bayhydur 401-70. The Japanese NPU CORONATE-HXR is HDI modified polyisocyanate containing isocyanurate, has good weather resistance, and can improve the hardness and the glossiness of a product and improve the physical drying, curing and chemical drying conditions of a paint film. The German Kostewa Bayhydur401-70 is hydrophilic modified aliphatic polyisocyanate based on isophorone diisocyanate (IPDI), can improve the chemical resistance and weather resistance of a paint film, and can prolong the activation period of the vehicle paint after the curing agent reacts with propylene glycol diacetate. The two curing agents are compounded for use, so that the hardness and the dryness of a paint film can be improved, the activation period can be prolonged, the workability of the product is improved, and manpower and material resources are saved.
Preferably, the antimicrobial agent is g-C3N4/TiO2Composite material of said g-C3N4/TiO2The preparation method of the composite material comprises the following steps:
heating dicyandiamide to 540-560 ℃ at the speed of 2.5-3.5 ℃/min, and preserving heat for 4-4.5 hours to enable the raw materials to have thermal polymerization reaction to obtain graphite-like phase carbon nitride (g-C)3N4) (ii) a Crushing the obtained product, putting the crushed product into a mixed solution of isopropanol and deionized water in a volume ratio of 8.5-9: 1, continuously stirring for 24-28 h, taking a supernatant, heating the supernatant to 115-125 ℃ at a speed of 4.5-5.5 ℃/min, preserving heat for 36-38 h, drying the obtained product at 100-110 ℃ to obtain layered g-C3N4(ii) a The resulting layer g-C is then3N4Dispersing in 9-11% v/v ethanol water solution, carrying out ultrasonic treatment for 40-45 min, adding NaOH activated titanium dioxide, and carrying out vacuum impregnation for 6-7 h. Washing with distilled water, sequentially ultrasonically cleaning with absolute ethyl alcohol and distilled water, drying, putting into a mixed aqueous solution containing 0.8-1.2 mol/L urea and 0.038-0.042 mol/L ammonium fluotitanate, keeping 2-3 g at 90 ℃, naturally cooling to room temperature, taking out, ultrasonically cleaning with deionized water and ethanol respectively, and drying to obtain the product. The antibacterial agent can improve the photocatalytic efficiency of the coating, and hasEffectively degrading organic pollutants on the surface of the metal base material and initially endowing the metal base material coating with self-cleaning performance. The method for activating the titanium dioxide by using NaOH is preferably as follows: 10mol/L NaOH and titanium dioxide are put into a hydrothermal kettle for calcination, and Na is obtained through hydrothermal reaction2Ti3O7Then, the mixture is washed by nitric acid of 0.1mol/L and distilled water until the pH value is 7 +/-0.5, (H in the washing process)+Will replace Na+To obtain H2Ti3O7) Calcining for dehydration to obtain activated TiO2。
Preferably, the wetting and leveling agent is organic modified siloxane, preferably an Effka EFKA-3580 leveling agent, has high-quality anti-shrinkage cavity performance and leveling effect, can improve the substrate wetting effect, and does not influence the interlayer adhesion.
Preferably, the barium sulfate has a particle size of 1500 mesh, i.e., all can pass through a 1500 mesh screen.
Preferably, the thickener is a strong pseudoplastic polyurethane thickener, preferably
Gel 0620, the thickening agent does not influence the gloss of a paint film, can reduce sagging and sedimentation phenomena to the greatest extent, and is suitable for the common spraying construction mode of vehicle paint.
Preferably, the defoamer is a self-emulsifying phosphate ester foam inhibitor/defoamer. Preference is given to
941PL, which has a long-lasting foam suppressing property, hardly loses defoaming ability even during storage, has very good water dispersibility, has no side effect on the appearance and uniformity of a paint film after being added to the automotive paint, and does not cause the phenomenon that fish eyes, craters and the like have an effect on the appearance of the paint film.
The invention also provides a preparation method of the ultraviolet-resistant automobile paint, which comprises the following steps:
step a, sequentially adding the dispersing agent, the defoaming agent, the wetting and leveling agent and the antibacterial agent into 45-55% of the deionized water according to the formula amount under the stirring state, uniformly stirring, sequentially adding the polytetrafluoroethylene micro powder, the benzotriazole ultraviolet absorbent, the titanium dioxide, the flame retardant, the pigment, the barium sulfate and the bentonite under the stirring state, completely dispersing, grinding to the fineness of less than or equal to 25 microns, and filtering by a 200-mesh sieve to obtain early-stage slurry;
b, adding the aqueous hydroxyl polyacrylic acid emulsion, a pH neutralizer, a film forming aid and the rest deionized water into the early-stage slurry under a stirring state, uniformly mixing, adding the thickening agent, uniformly mixing, and filtering by using 200-mesh filter cloth to obtain a component A;
step c, mixing and uniformly dispersing the waterborne polyurethane curing agent and PGDA, and filtering by a 200-mesh sieve to obtain a component B;
and d, mixing the component A and the component B just before use to obtain the composition.
The preparation method of the ultraviolet-resistant vehicle paint provided by the invention is simple to operate and is suitable for large-scale production operation. The input speed of the polytetrafluoroethylene micro powder, the benzotriazole ultraviolet absorbent, the titanium dioxide, the flame retardant, the pigment, the barium sulfate and the bentonite is suitable for being quickly rolled into the paint paste, and a large amount of powder cannot be accumulated on the liquid surface.
Preferably, the stirring state when the dispersing agent, the defoaming agent, the wetting and leveling agent and the antibacterial agent are added into the deionized water in the step a is 400-600 rpm.
Preferably, the stirring state when the polytetrafluoroethylene micro powder, the benzotriazole ultraviolet absorber, the titanium dioxide, the flame retardant, the pigment, the barium sulfate and the bentonite are added in the step a is 600-800 rpm.
Preferably, the stirring state in the step b is 600-800 rpm.
Preferably, the dispersing in the step c is stirring at 400-600 rpm until the dispersion is uniform.
Detailed Description
In order to make the objects, technical solutions and advantages of the present invention more apparent, the present invention is further described in detail with reference to the following embodiments. It should be understood that the specific embodiments described herein are merely illustrative of the invention and are not intended to limit the invention.
Examples
The embodiment of the invention provides an ultraviolet-resistant vehicle paint and a preparation method thereof, and the mass parts of the raw materials in the embodiments are shown in table 1.
TABLE 1
Wherein the aqueous hydroxy polyacrylic acid dispersoid is 3AH0545W of chemical industry of same De, the pH neutralizer is AMP-95 of Dow of America, the polytetrafluoroethylene micropowder is polytetrafluoroethylene micropowder wax W-8006 of Partner, the titanium dioxide is Dupont rutile type titanium dioxide R706, the pigment is MH-5R red pigment, the bentonite is Hamming Smodesty bentonite Bentoni LT, and the thickener is Hamming Smodesty bentonite Bentoni LT
Gel 0620, the water-based curing agent (1) is Japan NPU CORONATE-HXR, the water-based curing agent (2) is German Kadsura Bayhydur401-70, the dispersing agent is AFCONA 4474, and the defoaming agent is
941PL, Effka EFKA-3580 as wetting and leveling agent, g-C as antibacterial agent3N4/TiO2A composite material.
Wherein g-C3N4/TiO2The preparation method of the composite material comprises the following steps: accurately weighing 5.00g of dicyandiamide in a quartz crucible, slowly transferring the quartz crucible into an open-type vacuum tube electric furnace, heating to 550 ℃ at the speed of 3 ℃/min in the nitrogen atmosphere, and keeping the temperature for 4h to ensure that the raw materials undergo thermal polymerization reaction to obtain graphite-like phase carbon nitride (g-C)3N4). Collecting graphite-like carbon nitride obtained by reaction, grinding into powder with quartz mortar, adding 0.50g of the obtained product into 300mL of mixed solution of isopropanol and deionized water with the volume ratio of 9:1, continuously stirring for 24h, and taking supernatantPlacing the mixture into a high-pressure reaction kettle, placing the mixture into a constant-temperature drying box, heating the mixture to 120 ℃ at the speed of 5 ℃/min, and preserving the heat for 36 hours to obtain a hydrothermal substance. Transferring the obtained hydrothermal substance into a vacuum drying oven, and drying at 100 deg.C to obtain layered g-C3N4. The obtained layer g-C3N4Dispersing in 10% v/v ethanol water solution, ultrasonic treating for 40min, placing NaOH activated titanium dioxide therein, and vacuum soaking for 6 h. Washing with distilled water, sequentially ultrasonic cleaning with anhydrous ethanol and distilled water for 3 times, and oven drying to obtain g-C3N4/TiO2And (5) semi-finished product. A mixed aqueous solution containing 1.00mol/L of urea and 0.04mol/L of ammonium fluorotitanate was prepared. G to C3N4/TiO2Putting the semi-finished product into the mixed solution, rapidly heating to 90 ℃ under stirring, and keeping for 2 h. Naturally cooling to room temperature, taking out, respectively ultrasonically cleaning with deionized water and ethanol for 3 times, and oven drying. The method for activating the titanium dioxide by using NaOH comprises the following steps: 10mol/L NaOH and titanium dioxide are put into a hydrothermal kettle for calcination, and Na is obtained through hydrothermal reaction2Ti3O7Then, the mixture is washed by nitric acid of 0.1mol/L and distilled water until the pH value is 7 +/-0.5, (H in the washing process)+Will replace Na+To obtain H2Ti3O7) Calcining for dehydration to obtain activated TiO2
The preparation method of the ultraviolet-resistant vehicle paint in each embodiment comprises the following steps:
step a, sequentially adding a dispersing agent, a defoaming agent, a wetting leveling agent and an antibacterial agent into 45-55% formula amount of deionized water under the stirring state of 400-600 rpm, stirring for 5 minutes, sequentially adding polytetrafluoroethylene micro powder, benzotriazole ultraviolet absorbent, titanium dioxide, a flame retardant, pigment, barium sulfate and bentonite under the stirring state of 600-800 rpm, throwing at a speed which is suitable for being quickly rolled into paint slurry and preventing a large amount of powder from being accumulated on the liquid surface, dispersing at 800-1000 rpm for 10 minutes, grinding to the fineness of less than or equal to 25 mu m, and filtering with a 200-mesh sieve to obtain early-stage slurry;
b, adding the aqueous hydroxyl polyacrylic acid emulsion, the pH neutralizer, the film forming auxiliary agent and the residual deionized water into the slurry in the previous stage under the stirring state of 600-800 rpm, stirring for 20 minutes, slowly adding the thickening agent, uniformly mixing, and filtering by using 200-mesh filter cloth to obtain a component A;
step c, mixing the aqueous curing agent (1), the aqueous curing agent (2) and PGDA, uniformly dispersing at a stirring speed of 400-600 rpm, and filtering with a 200-mesh sieve to obtain a component B;
and d, mixing the component A and the component B just before use to obtain the composition.
Specific parameters in the preparation process of each example are shown in table 2:
TABLE 2
Comparative example
The comparative example provides an anti-ultraviolet vehicle paint and a preparation method thereof, wherein the mass part ratio of raw materials in each comparative example is based on example 5, the raw materials with similar functions and effects are replaced with part of raw materials in example 5, and specific pigments are shown in Table 3.
TABLE 3
The sources of the raw materials and the preparation method in each proportion are the same as those in example 5.
Examination example
The products of examples 1 to 5 and comparative examples 1 to 3 were sprayed on a 08AL steel plate of 250X 150mm, exposed to sunlight for 7 hours, and then subjected to physical property inspection.
The results are shown in Table 4.
TABLE 4
The stain resistance detection specifically comprises the following steps: preparing a rectangular performance board 10cm x 15cm (namely a flat board) prepared according to a standard temperature in a laboratory with the temperature of 25 ℃ and the humidity of 75%, obliquely placing the prepared performance board at 60 degrees with a horizontal plane, taking a side with the side length of 10cm as a bottom edge, then dropwise adding a pollution liquid at the 4/5 height position of the upper surface of the performance board (namely, the position which is vertical to the bottom edge and has the distance of 12 cm), uniformly dropping 1 ml of the pollution liquid at five positions, dropwise adding 1 ml of the pollution liquid at each position, after the flow of the pollution liquid is stopped, placing the experiment board into an oven, baking the oven for 2 hours at the temperature of 50 +/-1 ℃, then taking out the experiment board, washing away the pollutants on the surface by water, placing the experiment board into a xenon lamp for aging for 2000 hours, and observing the state of.
The test results in table 4 show that after being exposed to ultraviolet light, the ultraviolet-resistant automotive paints prepared in examples 1 to 5 have good gloss, hardness, stain resistance, heat resistance and artificial aging resistance after being formed into films, and are obviously superior to each proportion, which indicates that the ultraviolet-resistant automotive paints provided by the invention have excellent ultraviolet resistance.
The above description is only for the purpose of illustrating the preferred embodiments of the present invention and is not to be construed as limiting the invention, and any modifications, equivalents or improvements made within the spirit and principle of the present invention should be included in the scope of the present invention.
Claims (10)
1. An ultraviolet-resistant vehicle paint is characterized in that: the material comprises the following raw materials in parts by weight: 60-80 parts of water-based hydroxyl polyacrylic acid dispersoid, 1-3 parts of pH neutralizer, 3-6 parts of film-forming additive, 15-30 parts of deionized water, 4-8 parts of polytetrafluoroethylene micro powder, 1-3.5 parts of benzotriazole ultraviolet absorbent, 1-2 parts of titanium dioxide, 2-4 parts of flame retardant, 4-6 parts of pigment, 3-5 parts of barium sulfate, 1-3 parts of bentonite, 1-2 parts of thickener, 55-105 parts of waterborne polyurethane curing agent, 20-40 parts of propylene glycol diacetate, 1-3 parts of dispersant, 1-3 parts of defoamer, 3-6 parts of wetting and leveling agent and 1-3 parts of antibacterial agent.
2. The ultraviolet resistant automotive paint of claim 1, wherein: the material comprises the following raw materials in parts by weight: 70 parts of aqueous hydroxyl polyacrylic acid dispersoid, 2 parts of pH neutralizer, 4.8 parts of film-forming assistant, 24 parts of deionized water, 6 parts of polytetrafluoroethylene micro powder, 2.8 parts of benzotriazole ultraviolet absorbent, 1.5 parts of titanium pigment, 3.1 parts of flame retardant, 5.1 parts of pigment, 4 parts of barium sulfate, 2 parts of bentonite, 1.6 parts of thickening agent, 81 parts of aqueous polyurethane curing agent, 30 parts of propylene glycol diacetate, 2 parts of dispersing agent, 2 parts of defoaming agent, 4.5 parts of wetting and leveling agent and 2 parts of antibacterial agent.
3. The ultraviolet resistant automotive paint of claim 1, wherein: the film-forming aid is propylene glycol phenyl ether.
4. The ultraviolet resistant automotive paint of claim 1, wherein: the titanium dioxide is rutile type nano titanium dioxide with titanium dioxide content more than or equal to 99% w/w and oil absorption less than or equal to 23% w/w.
5. The ultraviolet resistant automotive paint of claim 1, wherein: the flame retardant is a mixture of asbestos and glass fiber powder in a mass ratio of 0.8-1.2: 1.
6. The ultraviolet resistant automotive paint of claim 1, wherein: the waterborne polyurethane curing agent comprises 50-90 parts of Japanese NPU CORONATE-HXR and 5-15 parts of German Kostewa Bayhydur 401-70.
7. The ultraviolet resistant automotive paint of claim 1, wherein: the antibacterial agent is g-C3N4/TiO2Composite material of said g-C3N4/TiO2The preparation method of the composite material comprises the following steps:
heating dicyandiamide to 540-560 ℃ at the speed of 2.5-3.5 ℃/min and preserving heat for 4-4.5 h; crushing the obtained product, placing the crushed product into a mixed solution of isopropanol and deionized water in a volume ratio of 8.5-9: 1, continuously stirring for 24-28 h, taking a supernatant, heating the supernatant to 115-125 ℃ at a speed of 4.5-5.5 ℃/min, preserving heat for 36-38 h, drying the obtained product at 100-110 ℃, dispersing the dried product into 9-11% v/v ethanol water solution, performing ultrasonic treatment for 40-45 min, adding titanium dioxide subjected to NaOH activation treatment, and performing vacuum impregnation for 6-7 h; washing with distilled water, sequentially carrying out ultrasonic cleaning with absolute ethyl alcohol and distilled water, drying, putting into a mixed aqueous solution containing 0.8-1.2 mol/L urea and 0.038-0.042 mol/L ammonium fluotitanate, keeping 2-3 g at 90 ℃, naturally cooling to room temperature, taking out, respectively carrying out ultrasonic cleaning with deionized water and ethanol, and drying to obtain the product.
8. The ultraviolet-resistant vehicle paint as claimed in any one of claims 1 to 7, wherein: the wetting and leveling agent is organic modified siloxane; and/or
The thickening agent is a strong pseudoplastic polyurethane thickening agent; and/or
The particle size of the barium sulfate is 1500 meshes; and/or
The defoaming agent is a self-emulsifying phosphate ester foam inhibiting/defoaming agent.
9. The preparation method of the ultraviolet-resistant vehicle paint as claimed in any one of claims 1 to 8, characterized by comprising the following steps: the method specifically comprises the following steps:
step a, sequentially adding the dispersing agent, the defoaming agent, the wetting and leveling agent and the antibacterial agent into 45-55% of the deionized water according to the formula amount under the stirring state, uniformly stirring, sequentially adding the polytetrafluoroethylene micro powder, the benzotriazole ultraviolet absorbent, the titanium dioxide, the flame retardant, the pigment, the barium sulfate and the bentonite under the stirring state, completely dispersing, grinding to the fineness of less than or equal to 25 microns, and filtering by a 200-mesh sieve to obtain early-stage slurry;
b, adding the aqueous hydroxyl polyacrylic acid emulsion, a pH neutralizer, a film forming aid and the rest deionized water into the early-stage slurry under a stirring state, uniformly mixing, adding the thickening agent, uniformly mixing, and filtering by using 200-mesh filter cloth to obtain a component A;
step c, mixing and uniformly dispersing the waterborne polyurethane curing agent and PGDA, and filtering by a 200-mesh sieve to obtain a component B;
and d, mixing the component A and the component B just before use to obtain the composition.
10. The method for preparing the ultraviolet-resistant vehicle paint according to claim 9, wherein the method comprises the following steps: in the step a, the stirring state when the dispersing agent, the defoaming agent, the wetting and leveling agent and the antibacterial agent are added into the deionized water is 400-600 rpm; and/or
B, adding the polytetrafluoroethylene micro powder, the benzotriazole ultraviolet absorbent, the titanium dioxide, the flame retardant, the pigment, the barium sulfate and the bentonite in the step a, wherein the stirring state is 600-800 rpm; and/or
The stirring state in the step b is 600-800 rpm; and/or
And c, stirring at 400-600 rpm until the dispersion is uniform.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201911171749.1A CN110964426A (en) | 2019-11-26 | 2019-11-26 | Ultraviolet-resistant vehicle paint and preparation method thereof |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201911171749.1A CN110964426A (en) | 2019-11-26 | 2019-11-26 | Ultraviolet-resistant vehicle paint and preparation method thereof |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN110964426A true CN110964426A (en) | 2020-04-07 |
Family
ID=70031710
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201911171749.1A Pending CN110964426A (en) | 2019-11-26 | 2019-11-26 | Ultraviolet-resistant vehicle paint and preparation method thereof |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN110964426A (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113527972A (en) * | 2021-08-25 | 2021-10-22 | 青岛金芳华新型建材科技有限公司 | High-glossiness anti-oxidation coating and preparation method thereof |
| CN118006179A (en) * | 2024-04-10 | 2024-05-10 | 合肥旭阳铝颜料有限公司 | Impact-resistant water-based automotive coating and preparation method thereof |
| CN118995022A (en) * | 2024-09-09 | 2024-11-22 | 道夫新材料(惠州)有限公司 | Water-based ultraviolet-resistant penetrating paint and preparation method thereof |
Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102559028A (en) * | 2012-01-19 | 2012-07-11 | 北京航材百慕新材料技术工程股份有限公司 | Protection finish paint for wind power blade and preparation method of protection finish paint |
| CN103102792A (en) * | 2013-02-26 | 2013-05-15 | 富思特新材料科技发展股份有限公司 | Water-based bicomponent polyurethane matte coating and preparation method thereof |
| CN103589313A (en) * | 2013-11-08 | 2014-02-19 | 株洲市九华新材料涂装实业有限公司 | Stain adhesion prevention finishing coating for subway vehicle and preparation method thereof |
| CN104209136A (en) * | 2014-09-15 | 2014-12-17 | 浙江大学 | Preparation method of TiO2/porous g-C3N4 composite |
| CN104311864A (en) * | 2014-10-16 | 2015-01-28 | 扬州喜达屋环保科技有限公司 | High-efficiency visible light antibacterial fresh-keeping plastic packaging material and preparation method thereof |
| CN106280781A (en) * | 2015-05-26 | 2017-01-04 | 苏州市贝特利高分子材料股份有限公司 | Computor-keyboard high abrasion white coating |
| CN109897513A (en) * | 2017-12-07 | 2019-06-18 | 河北晨阳工贸集团有限公司 | A kind of water paint and preparation method thereof for wind power generation blade |
-
2019
- 2019-11-26 CN CN201911171749.1A patent/CN110964426A/en active Pending
Patent Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102559028A (en) * | 2012-01-19 | 2012-07-11 | 北京航材百慕新材料技术工程股份有限公司 | Protection finish paint for wind power blade and preparation method of protection finish paint |
| CN103102792A (en) * | 2013-02-26 | 2013-05-15 | 富思特新材料科技发展股份有限公司 | Water-based bicomponent polyurethane matte coating and preparation method thereof |
| CN103589313A (en) * | 2013-11-08 | 2014-02-19 | 株洲市九华新材料涂装实业有限公司 | Stain adhesion prevention finishing coating for subway vehicle and preparation method thereof |
| CN104209136A (en) * | 2014-09-15 | 2014-12-17 | 浙江大学 | Preparation method of TiO2/porous g-C3N4 composite |
| CN104311864A (en) * | 2014-10-16 | 2015-01-28 | 扬州喜达屋环保科技有限公司 | High-efficiency visible light antibacterial fresh-keeping plastic packaging material and preparation method thereof |
| CN106280781A (en) * | 2015-05-26 | 2017-01-04 | 苏州市贝特利高分子材料股份有限公司 | Computor-keyboard high abrasion white coating |
| CN109897513A (en) * | 2017-12-07 | 2019-06-18 | 河北晨阳工贸集团有限公司 | A kind of water paint and preparation method thereof for wind power generation blade |
Non-Patent Citations (1)
| Title |
|---|
| 魏保志等: "《新旧动能转换新引擎 新材料产业专利导航》", 中国矿业大学出版社 * |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113527972A (en) * | 2021-08-25 | 2021-10-22 | 青岛金芳华新型建材科技有限公司 | High-glossiness anti-oxidation coating and preparation method thereof |
| CN118006179A (en) * | 2024-04-10 | 2024-05-10 | 合肥旭阳铝颜料有限公司 | Impact-resistant water-based automotive coating and preparation method thereof |
| CN118995022A (en) * | 2024-09-09 | 2024-11-22 | 道夫新材料(惠州)有限公司 | Water-based ultraviolet-resistant penetrating paint and preparation method thereof |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN110964426A (en) | Ultraviolet-resistant vehicle paint and preparation method thereof | |
| CN104877484B (en) | Petrochemical industry oil tank aqueous energy-saving heat-insulating thermal insulation coatings and preparation method thereof | |
| AU2014237704B2 (en) | Superhydrophilic coating composition | |
| CN101012351A (en) | Weather-resistant rust-proof water paint and preparing method thereof | |
| WO2019233161A1 (en) | Water-based heat-resistant paint and preparation method thereof | |
| CN101885943A (en) | Nano-glass heat insulation paint and preparation method thereof | |
| CN105111875A (en) | Self-cleaning nano protective liquid used for glass and preparation method | |
| CN103589311B (en) | A kind of preparation method of titanate esters modified nano cerium oxide/polyurethane Composite Coating | |
| CN102925050B (en) | Method for preparing water-based infrared-laser composite stealthy coating | |
| CN103409026B (en) | A kind of environment-friendly water-based anti-flaming dope | |
| CN106366892B (en) | Scratch-resistant outdoor powder coating | |
| CN108129967A (en) | A kind of aqueous polyurethane anticorrosive paint | |
| CN114686073A (en) | An environmentally friendly water-based aluminum-rich coating with long-term storage stability | |
| CN110484064B (en) | Aluminum paste fluorocarbon coating and preparation method thereof | |
| CN113652154A (en) | Wear-resistant color paste coating with high weather resistance and preparation method thereof | |
| CN112920667A (en) | Organic-inorganic antibacterial antifouling interior wall coating and preparation method thereof | |
| CN111732892A (en) | Household nano self-cleaning coating and preparation method thereof | |
| CN112920697B (en) | A kind of preparation method of superhydrophobic low infrared emissivity coating | |
| DE102013009881B3 (en) | Process for the preparation of an SiO 2 antireflective coating, SiO 2 antireflective coated substrate and its use | |
| CN105315805B (en) | A kind of energy-saving water paint of absorption degradation formaldehyde and releasing negative oxygen ion | |
| CN108485346B (en) | Non-toxic environment-friendly antifouling self-cleaning coating and preparation method thereof | |
| CN110527423B (en) | Antifouling radiation-proof water-based paint and preparation method thereof | |
| CN111138929B (en) | Nano composite graphene coating and preparation method thereof | |
| CN115124876A (en) | Functional filler, water-based wind power blade anti-icing coating and preparation method thereof | |
| CN111574862A (en) | Environment-friendly zeolite water-based paint for interior walls and preparation method thereof |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| PB01 | Publication | ||
| PB01 | Publication | ||
| SE01 | Entry into force of request for substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| RJ01 | Rejection of invention patent application after publication |
Application publication date: 20200407 |
|
| RJ01 | Rejection of invention patent application after publication |