CN114921160A - Transparent polyurea coating with salt mist resistance - Google Patents
Transparent polyurea coating with salt mist resistance Download PDFInfo
- Publication number
- CN114921160A CN114921160A CN202210537923.5A CN202210537923A CN114921160A CN 114921160 A CN114921160 A CN 114921160A CN 202210537923 A CN202210537923 A CN 202210537923A CN 114921160 A CN114921160 A CN 114921160A
- Authority
- CN
- China
- Prior art keywords
- component
- parts
- transparent
- agent
- diluent
- 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
- C09D175/02—Polyureas
-
- 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
- C09D7/60—Additives non-macromolecular
- C09D7/61—Additives non-macromolecular inorganic
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
A transparent polyurea coating with salt mist resistance is prepared from a component A and a component B according to the weight ratio of 1: 2-4 by volume; the component A is prepared from isocyanate and a diluent; the component B is prepared from aliphatic synthesized hindered amine polyurea resin, transparent filler, amine derivative solution, dispersing agent, ultraviolet absorbent, ultraviolet stabilizer, anti-settling agent, leveling agent, defoaming agent, diluent and water absorbent. The coating has salt spray resistance and ageing resistance, can be directly sprayed on the surfaces of base materials such as steel, aluminum, plastics and the like of an automobile chassis system after assembly, does not need to be shielded, and is convenient to construct and operate; the coating has strong adhesive force with the substrate of the automobile chassis system and good wear resistance, can effectively solve the problems of easy pulverization, color change, rusting and the like of the automobile chassis system, and provides all-round protection for the automobile chassis system; the invention belongs to an environment-friendly product.
Description
Technical Field
The invention relates to a transparent polyurea coating, in particular to a salt fog resistant transparent polyurea coating.
Background
At present, most of parts such as a frame, a rear axle, an oil tank shell, an air storage tank and the like in a chassis system of an automobile factory are independently sprayed with black protective coating, then the parts are assembled, mechanical collision can be generated in the assembling process, the coating can be difficultly damaged, and rust spots are caused to appear, so that the whole protection effect and action of the chassis system are seriously influenced, and therefore, a layer of protective coating needs to be sprayed on the chassis system after an automobile assembly. The antirust pigment is an important raw material related to the protective performance in the protective coating, and meanwhile, the protective coating has a special color and needs to be shielded, so that the construction efficiency is low.
CN107446476A discloses a special primer-topcoat polyurea protective coating for automobile chassis systems and a preparation method thereof, which is a colored coating product prepared by adding an antirust pigment (organotin and graphene slurry), a coloring pigment and a filler into polyaspartate resin. When the product is used as the protective coating of the automobile chassis system, the shielding is still needed, and the construction efficiency cannot be further improved.
Disclosure of Invention
The invention aims to solve the technical problem of overcoming the defects in the prior art and providing the transparent polyurea coating with high drying speed and good comprehensive performance and salt spray resistance.
The technical scheme adopted by the invention for solving the technical problems is as follows: a transparent polyurea coating with salt mist resistance is prepared from a component A and a component B according to the weight ratio of 1: 2-4 by volume ratio;
the component A is prepared from the following raw materials in parts by weight: 80-90 parts of isocyanate and 10-20 parts of diluent;
the component B is prepared from the following raw materials in parts by weight: 35-55 parts of aliphatic synthetic hindered amine polyurea resin, 20-35 parts of transparent filler, 3-5 parts of amine derivative solution, 0.3-1.0 part of dispersing agent, 0.5-1.5 parts of ultraviolet absorber, 0.5-1.5 parts of ultraviolet light stabilizer, 1.0-2.0 parts of anti-settling agent, 0.2-1.0 part of flatting agent, 0.2-0.5 part of defoaming agent, 15-25 parts of diluent and 3-5 parts of water absorbent.
Preferably, the isocyanate in the a component is HDI trimer.
Preferably, the diluent in the A component is propylene carbonate and/or n-butyl acetate.
More preferably, the isocyanate in the component A is one or more than two of Kossian HDI trimer N3790, N3800, N3900 and N3400.
Preferably, the transparent filler in the component B is silicate powder with the refractive index of 1.45-1.55 and the particle size of 1250-3000 meshes.
Preferably, the concentration of the amine derivative in the amine derivative solution in the component B is 18-22 wt%.
Preferably, the amine derivative is one or more than two of 3-bis-diethylamino-2-propanol, 1, 3-diamino-2-propanol and 1, 3-dimorpholinyl-2-propanol.
Preferably, the solvent of the amine derivative solution is one or more than two of dimethyl phthalate, butanone and methyl isobutyl ketone.
The amine derivative solution can coat the transparent powder in the system, and improves the dispersibility, the intermiscibility and the film transparency of the transparent powder. Meanwhile, the raw material can play a role in corrosion inhibition in a system, and can obviously improve the salt spray resistance, the water resistance and the chemical resistance of a coating film.
Preferably, the leveling agent in the component B is one or more of polyether modified polydimethylsiloxane, acrylate copolymer and fluorocarbon high molecular compound.
Preferably, the defoaming agent in the component B is one or more than two of modified polysiloxane, organic silicon polymer and fluorine-silicon polymer.
Preferably, the diluent in the component B is one or more than two of dimethylbenzene, n-butyl acetate, propylene glycol monomethyl ether acetate and ethyl acetate.
Preferably, the aliphatic synthesis hindered amine polyurea resin in the component B is one or more of F420, F524, F520 and F321 in the flying chemical industry, K8420, K8428 and K8520 in the Guangzhou Kimball chemical industry, and Cosimou NH1420, NH1520 and NH 2886.
Preferably, the ultraviolet light absorber in the component B is one or more than two of Basf 1130, Qidong Jinmei chemical UV-1, Tianjin Lianlong chemical UV-1130 and Taiwan double bond chemical CS 5530.
Preferably, the ultraviolet light stabilizer in the component B is one or more than two of Basfu 292, Qidong Jinmei chemical LS-292, Tianjinli Anlonghua chemical 7292 and Taiwan double bond chemical CS 292.
Preferably, the dispersant in the component B is one or more than two of BYK-110, BYK-161, BYK-163 and BYK-ATU.
Preferably, the anti-settling agent in the component B is one or more than two of 6900-20X, 4200-10 and 4200-20 of Tesibarone.
Preferably, the water absorbent in the component B is one or more of INCOZOL2, INCOZOL3 and INCOZOL4 of industrial copolymer. The oxazolidine functional group in the water-absorbing agent reacts with a small amount of moisture contained in the raw material of the B component (a certain amount of moisture is always contained in the commercially available raw material, and it is not completely anhydrous), and the workable time of the coating film can be extended. And meanwhile, new secondary amine and hydroxyl functional groups are generated through reaction, and the secondary amine reacts with isocyanate in the component A, so that the crosslinking density of the system is improved. The hydroxyl groups will chelate with the substrate, improving adhesion to the substrate. Thereby improving the mechanical property, salt mist resistance and chemical resistance of the product.
Preferably, the preparation method of the component A comprises the following steps: mixing isocyanate and a diluent, and stirring at a constant speed to enable the mass percentage of the isocyanate to reach 95-105% of a design value; the designed value of the mass percentage content of the isocyanic acid radical is 14-18%.
Preferably, the preparation method of the component B comprises the following steps: (1) mixing and dispersing part of aliphatic synthetic hindered amine polyurea resin, an anti-settling agent, a dispersing agent, a defoaming agent, a transparent filler, an amine derivative solution and part of a diluting agent to obtain slurry with the fineness of less than 30 micrometers; (2) and adding the residual aliphatic synthesized hindered amine polyurea resin, the flatting agent, the ultraviolet light absorber, the ultraviolet light stabilizer, the residual diluent and the water absorbent into the slurry, blending and dispersing to obtain the polyurethane resin.
More preferably, in the process of preparing the component A, the uniform stirring speed is 300-500 rpm and the uniform stirring time is 50-70 minutes.
More preferably, in the step (1) of preparing the component B, the dispersing speed is 1200-1500 rpm, and the dispersing time is 120-150 minutes.
More preferably, in the step (2) for preparing the component B, the dispersing speed is 800-1200 rpm, and the dispersing time is 30-50 minutes.
More preferably, the aliphatic synthesis hindered amine polyurea resin used in the step (1) accounts for 50-90% of the total amount of the aliphatic synthesis hindered amine polyurea resin; the used diluent accounts for 20-50% of the total dosage of the diluent.
The transparent polyurea coating with salt mist resistance is sprayed on a chassis system after an automobile assembly, so that the whole protection effect on the chassis system can be effectively achieved; and because the coating is transparent, the coating does not need to be shielded, thereby reducing the working procedures in the automobile manufacturing process and improving the production efficiency.
The colored antirust pigment is a key raw material playing a role in protection in the existing protective coating, and if the transparent polyurea coating is prepared, the antirust pigment, the coloring pigment and the filler cannot be added into the product, so that the transparent coating does not have the salt spray resistance, and the preparation of the transparent polyurea coating with the salt spray resistance is very difficult. The invention does not use the anti-rust pigment, the coloring pigment and the filler, but obtains better protective effect through the synergistic effect of other raw materials.
The invention has the beneficial effects that:
(1) the transparent polyurea coating has salt spray resistance and ageing resistance, can be directly sprayed on the surfaces of base materials such as steel, aluminum, plastics and the like of an automobile chassis system after assembly, does not need to be shielded, is convenient to construct and operate, can meet the index requirements of automobile companies by the thickness of a film formed at one time, has high construction efficiency, high film coating and drying speed and can be randomly adjusted in drying mode, thereby meeting the requirements of the field construction assembly line operation of the automobile companies;
(2) the coating has strong adhesive force with the substrate of the automobile chassis system, good wear resistance, no color change after long-term outdoor exposure, good salt spray resistance and chemical resistance, can effectively solve the problems of easy pulverization, color change, rusting and the like of the automobile chassis system, and provides all-round protection for the automobile chassis system;
(3) meanwhile, the invention belongs to an environment-friendly product, and can improve the overall coating level of the automobile and improve the market competitiveness of the automobile.
Detailed Description
The present invention is further illustrated by the following examples.
The starting materials used in the examples of the present invention were all obtained from conventional commercial sources.
Example 1
The transparent polyurea coating with the salt spray resistance is prepared from a component A and a component B according to the weight ratio of 1: 3 by volume ratio;
the component A is prepared from the following raw materials in parts by weight: 82 parts of isocyanate (70 parts of N3790, 12 parts of N3400) and 18 parts of diluent (propylene carbonate);
the component B is prepared from the following raw materials in parts by weight: 40 parts of aliphatic synthesis hindered amine polyurea resin (15 parts of F420, 15 parts of F321 and 10 parts of F520), 31 parts of transparent filler (silicate powder, 2500 meshes and 1.50 of refractive index), 4 parts of amine derivative solution (0.80 part of 3-bis-diethylamino-2-propanol and 3.2 parts of methyl isobutyl ketone), 0.5 part of dispersing agent (BYK 163), 0.8 part of ultraviolet agent (CS 5530), 0.7 part of ultraviolet light stabilizer (CS 292), 1.5 parts of anti-settling agent (6900-20X), 0.5 part of flatting agent (fluorocarbon high molecular compound), 0.5 part of defoaming agent (modified polysiloxane), 17.5 parts of diluting agent (5 parts of propylene glycol methyl ether acetate, 6.5 parts of dimethylbenzene and 6 parts of n-butyl acetate), and 3 parts of water absorbent (INCOLZOL 2).
The preparation method of the component A comprises the following steps: adding 70 parts of N3790, 12 parts of N3400 and 18 parts of propylene carbonate into a reaction kettle, stirring at a constant speed of 500rpm for 50 minutes until the mass percentage of the isocyanic acid radical reaches 14.8% (the design value is 15.0%), and obtaining a component A; discharging, packaging and charging nitrogen for protection.
Preparation of amine derivative solution: after 0.8 part of 3-bis-diethylamino-2-propanol and 3.2 parts of methyl isobutyl ketone were mixed, the mixture was dispersed at 400rpm for 10 minutes to obtain an amine derivative solution for use.
The preparation method of the component B comprises the following steps: (1) mixing 4 parts of amine derivative solution (containing 0.8 part of 3-bis-diethylamino-2-propanol and 3.2 parts of methyl isobutyl ketone), 15 parts of F420, 15 parts of F321, 31 parts of silicate powder, 1.5 parts of 6900-20X, 0.5 part of BYK163, 0.5 part of modified polysiloxane and 5 parts of propylene glycol monomethyl ether acetate, and dispersing at a high speed of 1200rpm for 150 minutes to obtain slurry with the fineness of 27 mu m; (2) adding 10 parts of F520, 0.5 part of fluorocarbon polymer, 0.8 part of CS5530, 0.7 part of CS292, 6.5 parts of dimethylbenzene, 6 parts of n-butyl acetate and 3 parts of INCOZOL2 into the slurry for blending, and dispersing at 1200rpm for 30 minutes to obtain a component B; filtering with 200 mesh silk cloth, and packaging.
Paint was sprayed onto the automotive chassis to check the paint properties: and (3) spraying the component A and the component B to an automobile chassis through a PROMIX 2KE two-component electronic proportioning flow meter system and an air-assisted spray gun according to the volume ratio of 1: 3, wherein the film coating thickness (dry film) is 45 +/-5 mu m.
Example 2
The transparent polyurea coating with the salt spray resistance of the embodiment is prepared from a component A and a component B according to the weight ratio of 1: 2 in a volume ratio;
the component A is prepared from the following raw materials in parts by weight: 90 parts of isocyanate (77 parts of N3390 and 13 parts of N3800) and 10 parts of diluent (N-butyl acetate);
the component B is prepared from the following raw materials in parts by weight: 42 parts of aliphatic synthetic hindered amine polyurea resin (12 parts of NH1420, 20 parts of NH2886 and 10 parts of NH 1520), 28 parts of transparent filler (silicate powder with 3000 meshes and the refractive index of 1.48), 5 parts of amine derivative solution (0.9 part of 1, 3-dimorpholinyl-2-propanol and 4.1 parts of dimethyl phthalate), 0.7 part of dispersing agent (BYK 161), 1 part of ultraviolet agent (1130), 0.5 part of ultraviolet light stabilizer (292), 2 parts of anti-settling agent (4200-10), 0.5 part of leveling agent (acrylate copolymer), 0.3 part of defoaming agent (organic silicon polymer), 16 parts of diluent (5 parts of propylene glycol methyl ether acetate, 6 parts of xylene, 5 parts of n-butyl acetate) and 4 parts of water absorbent (INCOXOL 4).
The preparation method of the component A comprises the following steps: adding 77 parts of N3390, 13 parts of N3800 and 10 parts of N-butyl acetate into a reaction kettle, stirring at a constant speed of 400rpm for 60 minutes until the mass percentage of the isocyanato reaches 16.3% (designed value is 16.5%), and obtaining a component A; discharging, packaging and charging nitrogen for protection.
Preparation of amine derivative solution: 0.9 part of 1, 3-dimorpholinyl-2-propanol and 4.1 parts of dimethyl phthalate were mixed and dispersed at 300rpm for 15 minutes to obtain an amine derivative solution for use.
The preparation method of the component B comprises the following steps: (1) mixing 5 parts of amine derivative solution (containing 0.9 part of 1, 3-dimorpholinyl-2-propanol and 4.1 parts of dimethyl phthalate), 12 parts of NH1420, 20 parts of NH2886, 28 parts of silicate powder (3000 meshes), 2 parts of 4200-10, 0.7 part of BYK161, 0.3 part of organic silicon polymer and 5 parts of propylene glycol monomethyl ether acetate, and dispersing at high speed of 1500rpm for 120 minutes to obtain slurry with the fineness of 25 um; (2) adding 10 parts of NH1520, 0.5 part of acrylic acid copolymer, 1 part of 1130, 0.5 part of 292, 6 parts of xylene, 5 parts of n-butyl acetate and 4 parts of INCOZOL4 into the slurry for blending, and dispersing at 1000rpm for 40 minutes to obtain a component B; filtering with 200 mesh silk cloth, and packaging.
Paint was sprayed onto the automotive chassis to check the paint properties: spraying the component A and the component B to an automobile chassis through a PROMIX 2KE two-component electronic proportioning flow meter system and an air-assisted spray gun according to the volume ratio of 1: 2, wherein the film thickness (dry film) is 45 +/-5 microns.
Example 3
The transparent polyurea coating with the salt spray resistance of the embodiment is prepared from a component A and a component B according to the weight ratio of 1: 4 in a volume ratio;
the component A is prepared from the following raw materials in parts by weight: 87 parts of isocyanate (62 parts of N3390, 25 parts of N3400), and 13 parts of diluent (propylene carbonate);
the component B is prepared from the following raw materials in parts by weight: 50 parts of aliphatic synthetic hindered amine polyurea resin (15 parts of K8420, 25 parts of K8428 and 10 parts of K8520), 23 parts of transparent filler (silicate powder with 1500 meshes and a refractive index of 1.52), 3 parts of amine derivative solution (0.65 part of 1, 3-diamino-2-propanol and 2.35 parts of butanone), 0.4 part of dispersing agent (BYK 110), 0.5 part of ultraviolet light absorbent (UV-1130), 1 part of ultraviolet light stabilizer (7292), 1 part of anti-settling agent (4200-20), 0.7 part of flatting agent (polyether modified polydimethylsiloxane), 0.4 part of defoaming agent (fluorine-silicon polymer), 15 parts of diluent (5 parts of propylene glycol methyl ether acetate, 6 parts of xylene and 4 parts of n-butyl acetate) and 5 parts of water absorbent (INCOXOL 3).
The preparation method of the component A comprises the following steps: adding 62 parts by mass of N3390, 25 parts by mass of N3400 and 13 parts by mass of propylene carbonate into a reaction kettle, stirring at a constant speed of 300rpm for 70 minutes until the mass percentage of the isocyanato reaches 17.2% (the design value is 17.5%), and obtaining a component A; discharging, packaging and charging nitrogen for protection.
Preparation of amine derivative solution: 0.65 part of 1, 3-diamino-2-propanol and 2.35 parts of butanone were mixed and dispersed at 200rpm for 20 minutes to obtain an amine derivative solution for use.
The preparation method of the component B comprises the following steps: (1) mixing 3 parts of amine derivative solution (containing 0.65 part of 1, 3-diamino-2-propanol and 2.35 parts of butanone), 15 parts of K8420, 25 parts of K8428, 23 parts of silicate powder (1500 meshes), 1 part of 4200-20, 0.4 part of BYK110, 0.4 part of fluorosilicone polymer and 5 parts of propylene glycol monomethyl ether acetate, and dispersing at a high speed of 1350rpm for 135 minutes to obtain slurry with the fineness of 25 um; (2) adding 10 parts of K8520, 0.7 part of polyether modified polydimethylsiloxane, 0.5 part of UV-1130, 1 part of 7292, 6 parts of xylene, 4 parts of n-butyl acetate and 5 parts of INCOZOL3 into the slurry for blending, and dispersing for 50 minutes at 800rpm to obtain a component B; filtering with 200 mesh silk cloth, and packaging.
Paint was sprayed onto the automotive chassis to check the paint properties: spraying the component A and the component B to an automobile chassis through a PROMIX 2KE two-component electronic proportioning flow meter system and an air-assisted spray gun according to the volume ratio of 1: 4, wherein the film thickness (dry film) is 45 +/-5 microns.
The commercially available clear polyurea coatings were sprayed in the same way and compared to the properties of the coatings of the examples of the invention. The test methods and test results are shown in table 1. As can be seen from Table 1, the transparent polyurea coating provided by the invention has the advantages of high drying speed, high transparency, low heavy metal content and VOC content, and obviously improved acid resistance, water resistance, salt spray resistance and ageing resistance compared with the transparent polyurea coating sold in the market.
TABLE 1 Performance test results of examples 1 to 3 and commercial transparent polyurea coatings
Claims (10)
1. A transparent polyurea coating with salt mist resistance is characterized by comprising a component A and a component B according to the weight ratio of 1: 2-4 by volume;
the component A is prepared from the following raw materials in parts by weight: 80-90 parts of isocyanate and 10-20 parts of diluent;
the component B is prepared from the following raw materials in parts by weight: 35-55 parts of aliphatic synthetic hindered amine polyurea resin, 20-35 parts of transparent filler, 3-5 parts of amine derivative solution, 0.3-1.0 part of dispersing agent, 0.5-1.5 parts of ultraviolet absorber, 0.5-1.5 parts of ultraviolet light stabilizer, 1.0-2.0 parts of anti-settling agent, 0.2-1.0 part of flatting agent, 0.2-0.5 part of defoaming agent, 15-25 parts of diluent and 3-5 parts of water absorbent.
2. The transparent polyurea coating having salt spray resistance of claim 1, wherein the isocyanate in the A component is HDI trimer; the diluent in the component A is propylene carbonate and/or n-butyl acetate.
3. The transparent polyurea coating with salt spray resistance of claim 2, wherein the isocyanate in the A component is one or more of Cossima HDI trimer N3790, N3800, N3900 and N3400.
4. The transparent polyurea coating with salt spray resistance of any one of claims 1 to 3, wherein the transparent filler in the component B is silicate powder with a refractive index of 1.45 to 1.55 and a particle size of 1250 to 3000 meshes; the concentration of the amine derivative in the amine derivative solution in the component B is 18-22 wt%; the amine derivative is one or more than two of 3-bis-diethylamino-2-propanol, 1, 3-diamino-2-propanol and 1, 3-dimorpholinyl-2-propanol; the solvent of the amine derivative solution is one or more than two of dimethyl phthalate, butanone and methyl isobutyl ketone.
5. The transparent polyurea coating with salt spray resistance of any one of claims 1 to 4, wherein the leveling agent in the component B is one or more of polyether modified polydimethylsiloxane, acrylate copolymer and fluorocarbon high molecular compound; the defoaming agent in the component B is one or more than two of modified polysiloxane, organic silicon polymer and fluorine-silicon polymer; the diluent in the component B is one or more than two of dimethylbenzene, n-butyl acetate, propylene glycol monomethyl ether acetate and ethyl acetate.
6. The transparent polyurea coating material with salt spray resistance of any one of claims 1 to 5, wherein the aliphatic synthetic hindered amine polyurea resin in the component B is one or more of F420, F524, F520 and F321, K8420, K8428 and K8520 in Kingplatel chemical engineering, and Korsakoff NH1420, NH1520 and NH 2886.
7. The transparent polyurea coating with salt spray resistance of any one of claims 1 to 6, wherein the ultraviolet light absorber in the component B is one or more of Basff 1130, Qidong Jinmei chemical UV-1, Tianjin Lianlong chemical UV-1130, and Taiwan double bond chemical CS 5530; the ultraviolet stabilizer in the component B is one or more than two of basf 292, Qidong Jinmei chemical LS-292, Tianjin Lianlong chemical 7292 and Taiwan double bond chemical CS 292.
8. The transparent polyurea coating with salt spray resistance of any one of claims 1 to 7, wherein the dispersant in the component B is one or more of BYK-110, BYK-161, BYK-163 and BYK-ATU; the anti-settling agent in the component B is one or more than two of the components of the Disambar oxide of 6900-20X, 4200-10 and 4200-20; the water absorbent in the component B is one or more than two of INCOXOL 2, INCOXOL 3 and INCOXOL 4 of industrial copolymer GmbH.
9. The transparent polyurea coating having salt spray resistance according to any one of claims 1 to 8, wherein:
the preparation method of the component A comprises the following steps: mixing isocyanate and a diluent, and stirring at a constant speed to enable the mass percentage of the isocyanate to reach 95-105% of a design value; the design value of the mass percentage content of the isocyanic acid radical is 14-18%;
the preparation method of the component B comprises the following steps: (1) mixing and dispersing part of aliphatic synthetic hindered amine polyurea resin, an anti-settling agent, a dispersing agent, a defoaming agent, a transparent filler, an amine derivative solution and part of a diluting agent to obtain slurry with the fineness of less than 30 micrometers; (2) and adding the residual aliphatic synthesized hindered amine polyurea resin, the flatting agent, the ultraviolet light absorber, the ultraviolet light stabilizer, the residual diluent and the water absorbent into the slurry, blending and dispersing to obtain the polyurethane resin.
10. The transparent polyurea coating with salt spray resistance of claim 9, wherein in the process of preparing the component A, the uniform stirring speed is 300-500 rpm and the uniform stirring time is 50-70 minutes; in the step (1) for preparing the component B, the dispersing speed is 1200-1500 rpm, and the dispersing time is 120-150 minutes; in the step (2) for preparing the component B, the dispersing speed is 800-1200 rpm, and the dispersing time is 30-50 minutes; the aliphatic synthesis hindered amine polyurea resin used in the step (1) accounts for 50-90% of the total amount of the aliphatic synthesis hindered amine polyurea resin; the used diluent is 20-50% of the total dosage of the diluent.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202210537923.5A CN114921160A (en) | 2022-05-18 | 2022-05-18 | Transparent polyurea coating with salt mist resistance |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202210537923.5A CN114921160A (en) | 2022-05-18 | 2022-05-18 | Transparent polyurea coating with salt mist resistance |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN114921160A true CN114921160A (en) | 2022-08-19 |
Family
ID=82808980
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202210537923.5A Pending CN114921160A (en) | 2022-05-18 | 2022-05-18 | Transparent polyurea coating with salt mist resistance |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN114921160A (en) |
Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101153155A (en) * | 2006-09-28 | 2008-04-02 | 比亚迪股份有限公司 | Priming coating composition and preparation method thereof |
| CN105694825A (en) * | 2014-11-28 | 2016-06-22 | 比亚迪股份有限公司 | An engine running-in liquid |
| CN107446476A (en) * | 2017-08-10 | 2017-12-08 | 湘江涂料科技有限公司 | A kind of automobile chassis system-specific bottom surface unification polyurea protection coating and preparation method |
-
2022
- 2022-05-18 CN CN202210537923.5A patent/CN114921160A/en active Pending
Patent Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101153155A (en) * | 2006-09-28 | 2008-04-02 | 比亚迪股份有限公司 | Priming coating composition and preparation method thereof |
| CN105694825A (en) * | 2014-11-28 | 2016-06-22 | 比亚迪股份有限公司 | An engine running-in liquid |
| CN107446476A (en) * | 2017-08-10 | 2017-12-08 | 湘江涂料科技有限公司 | A kind of automobile chassis system-specific bottom surface unification polyurea protection coating and preparation method |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN102533029B (en) | Aqueous asphalt imitation anticorrosion coating for container chassis and preparation method thereof | |
| CN102863874B (en) | Water-base epoxy zinc-rich priming paint and preparation method thereof | |
| CN101735708B (en) | Anti-ageing epoxy paint, preparation method and application thereof | |
| CN107446476B (en) | Special primer-topcoat polyurea protective coating for automobile chassis system and preparation method thereof | |
| CN108976371B (en) | High-performance sulfonic acid type waterborne polyurethane curing agent and preparation method and application thereof | |
| CN103666229A (en) | High solid coating for container and preparation method of high solid coating | |
| CN107400454B (en) | Salt-fog-resistant bi-component waterborne polyurethane varnish and preparation method thereof | |
| CN104559717B (en) | Low-cost high-performance water-based two-component polyurethane coating and method for preparing same | |
| CN112210279B (en) | High-solid-content low-viscosity polyaspartic ester primer-topcoat integrated coating suitable for high-pressure airless spraying and preparation method thereof | |
| CN105669947A (en) | Non-ionic aqueous HDI polyurethane curing agent preparation method | |
| CN104387939A (en) | Strong-acid-alkali-resistant polyurethane finishing coat for locomotives and preparation method of finishing coat | |
| CN113045971A (en) | Polyurea coating and preparation method thereof | |
| CN112708337A (en) | Water-based two-component polyurethane primer-topcoat coating and preparation method thereof | |
| CN111434737A (en) | Modified waterborne epoxy resin/nano SiO2Composite hydrophobic coating and preparation method thereof | |
| CN109206996B (en) | Water-based solvent-free bottom-surface-integrated high-gloss single-component plain-color finish paint and preparation thereof | |
| CN104312410B (en) | A kind of amino-stoving varnish compositions with self-cleaning function and preparation method thereof | |
| CN111320917A (en) | Water-based single-component epoxy anticorrosive paint coated on automobile plate spring and preparation method thereof | |
| CN103194124A (en) | Three-component all-environment-friendly aqueous carpentry paint | |
| CN110698934A (en) | Waterborne epoxy modified acrylic paint with dual-purpose bottom surface and preparation method thereof | |
| CN107629652A (en) | A kind of water-based paint compositions, preparation method and applications | |
| CN114921160A (en) | Transparent polyurea coating with salt mist resistance | |
| CN102876204A (en) | Self-cleaning powder coating | |
| CN106433345A (en) | Waterborne acrylic middle coating and preparation method thereof | |
| CN113416467A (en) | Epoxy ester antirust water paint and preparation method thereof | |
| CN103351797A (en) | Polyaspartate industrial coating material and preparation method and application 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 |