CN113444413A - Water-based primer-topcoat paint special for vehicles and preparation method thereof - Google Patents
Water-based primer-topcoat paint special for vehicles and preparation method thereof Download PDFInfo
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- CN113444413A CN113444413A CN201910498249.2A CN201910498249A CN113444413A CN 113444413 A CN113444413 A CN 113444413A CN 201910498249 A CN201910498249 A CN 201910498249A CN 113444413 A CN113444413 A CN 113444413A
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- water
- agent
- paint
- topcoat
- based primer
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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
- C09D133/00—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 only one carboxyl radical, or of salts, anhydrides, esters, amides, imides, or nitriles thereof; Coating compositions based on derivatives of such polymers
- C09D133/04—Homopolymers or copolymers of esters
-
- C—CHEMISTRY; METALLURGY
- C09—DYES; PAINTS; POLISHES; NATURAL RESINS; ADHESIVES; COMPOSITIONS NOT OTHERWISE PROVIDED FOR; APPLICATIONS OF MATERIALS NOT OTHERWISE PROVIDED FOR
- C09D—COATING COMPOSITIONS, e.g. PAINTS, VARNISHES OR LACQUERS; FILLING PASTES; CHEMICAL PAINT OR INK REMOVERS; INKS; CORRECTING FLUIDS; WOODSTAINS; PASTES OR SOLIDS FOR COLOURING OR PRINTING; USE OF MATERIALS THEREFOR
- C09D5/00—Coating compositions, e.g. paints, varnishes or lacquers, characterised by their physical nature or the effects produced; Filling pastes
- C09D5/08—Anti-corrosive paints
-
- 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
- C09D7/48—Stabilisers against degradation by oxygen, light or heat
-
- 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
- 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
- C08K3/30—Sulfur-, selenium- or tellurium-containing compounds
- C08K2003/3045—Sulfates
-
- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08K—Use of inorganic or non-macromolecular organic substances as compounding ingredients
- C08K3/00—Use of inorganic substances as compounding ingredients
- C08K3/32—Phosphorus-containing compounds
- C08K2003/321—Phosphates
- C08K2003/327—Aluminium phosphate
Abstract
The invention discloses a special water-based primer-topcoat integrated paint for vehicles, which is prepared by adding an auxiliary agent with environmental protection property and a filler with shielding effect into water-based epoxy ester resin mixed with water-based epoxy modified acrylic emulsion.
Description
Technical Field
The invention relates to the technical field of paint preparation, in particular to a special water-based primer-topcoat integrated paint for vehicles and a preparation method thereof.
Background
In the prior art, two traditional anticorrosive coating systems are mainly used in the coating treatment of vehicles, namely a primer, a primer surfacer and a finish composite anticorrosive coating system or a primer and finish composite anticorrosive coating system. The primer mainly protects the surface of the base material and provides good adhesion and corrosion resistance; the middle coating mainly plays a role in repairing and filling, so that the surface of the base material is smooth, the finish coating is favorably coated, the finish coating mainly plays a role in decoration and protection, and the middle coating has the characteristics of high hardness, high wear resistance, high chemical performance and the like; however, the two coating processes are complex, the construction period is long, the requirement on the operation proficiency is high, and the matching performance of the whole coating system is poor easily caused once carelessness occurs. Meanwhile, the emission of volatile organic compounds of the traditional anticorrosive coating system is high, and benzene, toluene and free TDI contained in the system not only harm the safety of constructors and users, but also cause serious pollution to the environment.
Therefore, the problem to be solved by the technical personnel in the field is how to provide the vehicle special paint which is healthy, non-toxic and good in corrosion resistance and adhesion performance.
Disclosure of Invention
In view of the above, the invention provides the water-based primer-topcoat integrated paint special for the vehicle, which has the advantages of simple construction process, low cost, super-low VOC, and super-low VOC, is used for corrosion prevention of the primer-topcoat integrated paint for the vehicle, and has super-strong adhesion performance and no heavy metal pigment filler.
In order to achieve the purpose, the invention adopts the following technical scheme:
the invention provides a special water-based primer-topcoat integrated paint for vehicles, which comprises the following components in percentage by weight: 30-40% of water-based epoxy modified acrylic emulsion, 10-20% of water-based epoxy ester resin, 0.3-0.4% of defoaming agent, 0.2-0.4% of alkaline neutralizing agent, 2-3% of dispersing agent, 30-40% of pigment and filler, 0.5-1% of base material wetting agent, 7-10% of deionized water, 1-2% of thickening agent, 0.5-1% of anti-settling agent, 0-0.5% of antirust assistant, 1-3% of ultraviolet absorbent and 3-5% of environment-friendly solvent.
The beneficial effects of the above technical scheme are: the waterborne epoxy modified acrylic emulsion has the advantages of high drying speed, excellent adhesive force, good flexibility, good corrosion resistance, high hardness, high adhesive force and good various medium resistances, and meanwhile, the film forming speed is greatly shortened and the drying speed is further improved by matching with an alkaline neutralizer; the water-based epoxy ester resin has good water and salt spray resistance, can be rapidly cured at room temperature by being matched with the water-based epoxy modified acrylic emulsion, and provides good hardness and salt spray resistance for a paint film; the main reaction of epoxy group in epoxy resin and carboxyl group in acrylic resin, and the polymerization reaction of acrylic monomer itself and the reaction of epoxy group in the system and amine are assisted, so that the film-forming speed of the coating is accelerated, the internal structure of the system is strengthened, and the corrosion resistance, adhesive force and hardness of the system are greatly improved.
Preferably, the waterborne epoxy modified acrylic emulsion is provided by tin-free Diegon epoxy Co.Ltd; the waterborne epoxy ester resin is provided by Changzhou Guangshu chemical technology company; the antifoaming agent is a mixture of 941PL and BYK-028 created in France; the dispersant is one or two of BYK-190 or BYK-194 of Pico company; the thickener is Rohm-12W of alkali swelling association type thickener of Haas; the anti-settling agent is A-8421 from Picker.
The beneficial effects of the preferred technical scheme are as follows: the alkali swelling association type thickener has certain surfactant performance and structure, is separated at a high shearing rate to reduce the viscosity, is reformed after being sheared off to recover the viscosity, is beneficial to leveling and improving the luster, and is simultaneously condensed together and expanded when meeting alkali under the general condition, and is compounded with an anti-settling agent to greatly improve the storage stability.
Preferably, the alkaline neutralizing agent is dimethylethanolamine; the substrate wetting agent is one or more of Tego-100, Tego-510 and Tego-4100 of TEGO; the antirust auxiliary agent is a corrosion inhibitor 150; the ultraviolet absorber is a Uca 930 light stabilizer.
The beneficial effects of the preferred technical scheme are as follows: the ultraviolet absorbent is hydroxybenzene-benzotriazole ultraviolet absorbent liquid specially developed for paint, the light absorption of the ultraviolet absorbent liquid is about 290nm to 370nm, the high-temperature extraction resistance of the ultraviolet absorbent liquid can particularly meet the use requirements of industrial and vehicle paint, and the aging resistance of a paint film is greatly prolonged.
Preferably, the pigment and filler are aluminum tripolyphosphate, titanium dioxide R-706, aluminum zinc phosphate, superfine barium sulfate, calcium silicate and MA-100 carbon black; the environment-friendly solvent is dipropylene glycol butyl ether.
The beneficial effects of the preferred technical scheme are as follows: the selected fillers comprise aluminum silicate, barium sulfate, aluminum tripolyphosphate and aluminum zinc phosphate which are nontoxic powder without lead and chromium, wherein the barium sulfate has excellent gloss retention, the aluminum silicate, the tripolyphosphoric acid and the aluminum zinc phosphate provide powerful guarantee for the corrosion resistance of a system, particularly, the aluminum zinc phosphate replaces the original strontium chrome yellow powder, does not contain heavy metals such as lead and chromium, is a novel environment-friendly anticorrosive pigment, mainly comprises the aluminum phosphate, zinc hydrate, modified silicate and the like, has the pH value of 6.5-7.5, is easy to dissolve in water, has excellent corrosion resistance, and has a specific mechanism that the corrosion resistance is realized through the dual effects of passivation and replacement reaction (cathode protection anode); because zinc splashes away than iron, oxygen and water in the air contact the surface of the iron base material to generate a replacement reaction, aluminum in a paint film passivates the surface of the base material, and the adhesive force of the base material is improved.
The invention also provides a preparation method of the water-based primer-topcoat integrated paint special for the vehicle, which comprises the following steps:
(1) weighing raw materials according to a ratio, sequentially adding 60% of deionized water, a defoaming agent, a dispersing agent, a pigment filler and an anti-settling agent into a material preparation pot, uniformly stirring, and grinding to obtain early-stage slurry;
(2) sequentially adding the waterborne epoxy modified acrylic emulsion, the waterborne epoxy ester resin, the alkaline neutralizer, the rest deionized water and the environment-friendly solvent into a paint mixing tank, and stirring uniformly;
(3) uniformly stirring the early stage slurry prepared in the step (1), pouring the mixture into the paint mixing tank in the step (2), adjusting the rotating speed, and continuously stirring until the mixture is uniform;
(4) and (4) adding the base material wetting agent, the antirust auxiliary agent and the ultraviolet absorbent into the paint mixing tank obtained in the step (3), continuously stirring for 10-15min, and then adding the thickening agent to adjust the viscosity, so as to obtain the special water-based primer-topcoat integrated paint for the vehicle.
Preferably, the stirring in the step (1) is continuously carried out at 600-800r/min for 20-25 min.
Preferably, the grinding fineness in the step (1) is less than or equal to 20 mu m.
Preferably, the stirring time in the step (2) is 300-600r/min for 10-15 min.
Preferably, the rotation speed in the step (3) is adjusted to be 500-800 r/min.
Preferably, the viscosity in said step (4) is adjusted to 85 to 95KU (stormer viscometer, 23 to 25 ℃).
According to the technical scheme, compared with the prior art, the water-based primer-topcoat integrated paint special for the vehicle is prepared by adding the auxiliary agent with the environmental protection property and the filler with the shielding effect into water-based epoxy ester resin mixed with water-based epoxy modified acrylic emulsion, and the prepared water-based anticorrosive paint has the characteristics of excellent performance, decorative effect of finish paint, high drying speed, good adhesive force, excellent chemical resistance, physical and mechanical properties and the like, has the advantages of the primer and the finish paint, and also has the advantages of simple coating process, short construction period and low VOC (volatile organic compound).
Detailed Description
The technical solutions in the embodiments of the present invention are 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.
The sources of the raw materials used in the examples are as follows: the waterborne epoxy modified acrylic emulsion is provided by tin-free Diegon epoxy Co.Ltd; the waterborne epoxy ester resin is provided by Changzhou Guangshu chemical technology company; the antifoaming agent is a mixture of 941PL and BYK-028 created in France; the dispersant is one or two of BYK-190 or BYK-194 of Pico company; the thickener is Rohm-12W of alkali swelling association type thickener of Haas; the anti-settling agent is A-8421 of Picker; the alkaline neutralizing agent is dimethylethanolamine; the substrate wetting agent is one or more of Tego-100, Tego-510 and Tego-4100 of TEGO; the rust-proof auxiliary agent is a corrosion inhibitor 150; the ultraviolet absorbent is a Youka 930 light stabilizer; the pigment and filler is aluminum zinc phosphate; the environment-friendly solvent is dipropylene glycol butyl ether.
The raw materials of the embodiments are as follows according to the parts by weight:
the preparation method comprises the following steps:
(1) weighing raw materials according to a ratio, sequentially adding 60% of deionized water, a defoaming agent, a dispersing agent, a pigment filler and an anti-settling agent into a material preparation pot, continuously stirring for 20-25min at 800r/min, and then grinding until the fineness is less than or equal to 20 mu m to obtain early-stage slurry;
(2) sequentially adding the waterborne epoxy modified acrylic emulsion, the waterborne epoxy ester resin, the alkaline neutralizer, the rest deionized water and the environment-friendly solvent into a paint mixing tank, and stirring for 10-15min at 600r/min under 300-;
(3) uniformly stirring the pre-stage slurry prepared in the step (1), pouring the pre-stage slurry into the paint mixing tank in the step (2), adjusting the rotating speed to be 800r/min, and continuously stirring the pre-stage slurry until the pre-stage slurry is uniform;
(4) and (4) adding the base material wetting agent, the antirust additive and the ultraviolet absorbent into the paint mixing tank obtained in the step (3), continuously stirring for 10-15min, adding the thickener to adjust the viscosity to 85-95KU (stormer viscometer, 23-25 ℃), and thus obtaining the water-based primer-topcoat integrated paint special for the vehicle.
Comparative example 1 is a conventional waterborne epoxy primer-surfaced product, and comparative example 2 is a conventional waterborne polyurethane product, primed.
Measurement of Performance
Standard property tests were carried out on the paints prepared in examples 1 to 5 above, and the results are shown in the following table:
note: the detection standard is detected according to the chemical industry standard of the HG/T4759-2014 PRC-waterborne epoxy resin anticorrosive paint (the acid and alkali resistance is detected according to the acid and alkali resistance of the HG/T4761-2014 waterborne polyurethane paint)
From the results, the water-based primer-topcoat paint produced by the technical scheme of the invention meets the relevant standards and has good performance.
The embodiments in the present description are described in a progressive manner, each embodiment focuses on differences from other embodiments, and the same and similar parts among the embodiments are referred to each other. The device disclosed by the embodiment corresponds to the method disclosed by the embodiment, so that the description is simple, and the relevant points can be referred to the method part for description.
The previous description of the disclosed embodiments is provided to enable any person skilled in the art to make or use the present invention. Various modifications to these embodiments will be readily apparent to those skilled in the art, and the generic principles defined herein may be applied to other embodiments without departing from the spirit or scope of the invention. Thus, the present invention is not intended to be limited to the embodiments shown herein but is to be accorded the widest scope consistent with the principles and novel features disclosed herein.
Claims (10)
1. The water-based primer-topcoat in one paint special for vehicles is characterized by comprising the following components in percentage by weight: 30-40% of water-based epoxy modified acrylic emulsion, 10-20% of water-based epoxy ester resin, 0.3-0.4% of defoaming agent, 0.2-0.4% of alkaline neutralizing agent, 2-3% of dispersing agent, 30-40% of pigment and filler, 0.5-1% of base material wetting agent, 7-10% of deionized water, 1-2% of thickening agent, 0.5-1% of anti-settling agent, 0-0.5% of antirust assistant, 1-3% of ultraviolet absorbent and 3-5% of environment-friendly solvent.
2. The water-based primer-topcoat paint for vehicles of claim 1, wherein the water-based epoxy modified acrylic emulsion is provided by Wuxi Diesen epoxy Co; the waterborne epoxy ester resin is provided by Changzhou Guangshu chemical technology company; the antifoaming agent is a mixture of 941PL and BYK-028 created in France; the dispersant is one or two of BYK-190 or BYK-194 of Pico company; the thickener is Rohm-12W of alkali swelling association type thickener of Haas; the anti-settling agent is A-8421 from Picker.
3. The water-based under-coating paint for vehicle according to claim 1, wherein the alkaline neutralizing agent is dimethylethanolamine; the substrate wetting agent is one or more of Tego-100, Tego-510 and Tego-4100 of TEGO; the antirust auxiliary agent is a corrosion inhibitor 150; the ultraviolet absorber is a Uca 930 light stabilizer.
4. The water-based primer-topcoat in one paint as claimed in claim 1, wherein the pigment and filler is aluminum tripolyphosphate, titanium white R-706, zinc aluminum phosphate, ultra-fine barium sulfate, calcium silicate, MA-100 carbon black; the environment-friendly solvent is dipropylene glycol butyl ether.
5. The preparation method of the water-based primer-topcoat paint special for the vehicle, which is characterized by comprising the following steps of:
(1) weighing raw materials according to a ratio, sequentially adding 60% of deionized water, a defoaming agent, a dispersing agent, a pigment filler and an anti-settling agent into a material preparation pot, uniformly stirring, and grinding to obtain early-stage slurry;
(2) sequentially adding the waterborne epoxy modified acrylic emulsion, the waterborne epoxy ester resin, the alkaline neutralizer, the rest deionized water and the environment-friendly solvent into a paint mixing tank, and stirring uniformly;
(3) uniformly stirring the early stage slurry prepared in the step (1), pouring the mixture into the paint mixing tank in the step (2), adjusting the rotating speed, and continuously stirring until the mixture is uniform;
(4) and (4) adding the base material wetting agent, the antirust auxiliary agent and the ultraviolet absorbent into the paint mixing tank obtained in the step (3), continuously stirring for 10-15min, and then adding the thickening agent to adjust the viscosity, so as to obtain the special water-based primer-topcoat integrated paint for the vehicle.
6. The method as claimed in claim 5, wherein the stirring time in step (1) is 600-800r/min for 20-25 min.
7. The method for preparing the water-based primer-topcoat paint for vehicles as claimed in claim 5, wherein the fineness of grinding in step (1) is 20 μm or less.
8. The method as claimed in claim 5, wherein the stirring time in step (2) is 600r/min for 10-15 min.
9. The method as claimed in claim 5, wherein the rotation speed in step (3) is adjusted to 500-800 r/min.
10. The method for preparing the water based primer-topcoat for vehicles according to claim 5, wherein the viscosity in the step (4) is adjusted to 85-95 KU.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910498249.2A CN113444413A (en) | 2019-06-10 | 2019-06-10 | Water-based primer-topcoat paint special for vehicles and preparation method thereof |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
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| CN201910498249.2A CN113444413A (en) | 2019-06-10 | 2019-06-10 | Water-based primer-topcoat paint special for vehicles and preparation method thereof |
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| CN113444413A true CN113444413A (en) | 2021-09-28 |
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| CN201910498249.2A Pending CN113444413A (en) | 2019-06-10 | 2019-06-10 | Water-based primer-topcoat paint special for vehicles and preparation method thereof |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114133794A (en) * | 2021-12-07 | 2022-03-04 | 重庆海联水性涂料有限公司 | Environment-friendly water-based permeable primer for repairing paint film of building steel structure |
| CN116676024A (en) * | 2023-06-20 | 2023-09-01 | 安徽恒和新材料有限公司 | Water-based steel structure antirust paint and preparation method thereof |
Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102627902A (en) * | 2012-03-20 | 2012-08-08 | 上海暄洋化工材料科技有限公司 | Nanometer reinforced aqueous acrylic acid modified epoxy primer-topcoat anticorrosion paint coating and preparation method thereof |
| CN109762443A (en) * | 2019-01-15 | 2019-05-17 | 亚士漆(上海)有限公司 | A kind of coating and its preparation method and application of water-based mono-component bottom surface unification |
-
2019
- 2019-06-10 CN CN201910498249.2A patent/CN113444413A/en active Pending
Patent Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102627902A (en) * | 2012-03-20 | 2012-08-08 | 上海暄洋化工材料科技有限公司 | Nanometer reinforced aqueous acrylic acid modified epoxy primer-topcoat anticorrosion paint coating and preparation method thereof |
| CN109762443A (en) * | 2019-01-15 | 2019-05-17 | 亚士漆(上海)有限公司 | A kind of coating and its preparation method and application of water-based mono-component bottom surface unification |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114133794A (en) * | 2021-12-07 | 2022-03-04 | 重庆海联水性涂料有限公司 | Environment-friendly water-based permeable primer for repairing paint film of building steel structure |
| CN116676024A (en) * | 2023-06-20 | 2023-09-01 | 安徽恒和新材料有限公司 | Water-based steel structure antirust paint and preparation method thereof |
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Application publication date: 20210928 |
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