CN114456693A - Magnesium alloy PU piano black paint for vehicle - Google Patents
Magnesium alloy PU piano black paint for vehicle Download PDFInfo
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- CN114456693A CN114456693A CN202111576799.5A CN202111576799A CN114456693A CN 114456693 A CN114456693 A CN 114456693A CN 202111576799 A CN202111576799 A CN 202111576799A CN 114456693 A CN114456693 A CN 114456693A
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- magnesium alloy
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- 239000003973 paint Substances 0.000 title claims abstract description 108
- 229910000861 Mg alloy Inorganic materials 0.000 title claims abstract description 31
- 239000003795 chemical substances by application Substances 0.000 claims abstract description 83
- DKPFZGUDAPQIHT-UHFFFAOYSA-N Butyl acetate Natural products CCCCOC(C)=O DKPFZGUDAPQIHT-UHFFFAOYSA-N 0.000 claims abstract description 46
- FUZZWVXGSFPDMH-UHFFFAOYSA-N hexanoic acid Chemical compound CCCCCC(O)=O FUZZWVXGSFPDMH-UHFFFAOYSA-N 0.000 claims abstract description 46
- 239000004925 Acrylic resin Substances 0.000 claims abstract description 39
- 229920000178 Acrylic resin Polymers 0.000 claims abstract description 39
- CTQNGGLPUBDAKN-UHFFFAOYSA-N O-Xylene Chemical compound CC1=CC=CC=C1C CTQNGGLPUBDAKN-UHFFFAOYSA-N 0.000 claims abstract description 33
- 229920001225 polyester resin Polymers 0.000 claims abstract description 18
- 239000004645 polyester resin Substances 0.000 claims abstract description 18
- 230000002745 absorbent Effects 0.000 claims abstract description 9
- 239000002250 absorbent Substances 0.000 claims abstract description 9
- 239000000326 ultraviolet stabilizing agent Substances 0.000 claims abstract description 9
- 238000003756 stirring Methods 0.000 claims description 35
- 239000004814 polyurethane Substances 0.000 claims description 32
- 229920005989 resin Polymers 0.000 claims description 31
- 239000011347 resin Substances 0.000 claims description 31
- ZWEHNKRNPOVVGH-UHFFFAOYSA-N 2-Butanone Chemical compound CCC(C)=O ZWEHNKRNPOVVGH-UHFFFAOYSA-N 0.000 claims description 24
- 239000003085 diluting agent Substances 0.000 claims description 21
- 239000002131 composite material Substances 0.000 claims description 16
- LRHPLDYGYMQRHN-UHFFFAOYSA-N N-Butanol Chemical compound CCCCO LRHPLDYGYMQRHN-UHFFFAOYSA-N 0.000 claims description 14
- 238000000034 method Methods 0.000 claims description 13
- TZCXTZWJZNENPQ-UHFFFAOYSA-L barium sulfate Chemical compound [Ba+2].[O-]S([O-])(=O)=O TZCXTZWJZNENPQ-UHFFFAOYSA-L 0.000 claims description 12
- 238000002360 preparation method Methods 0.000 claims description 12
- 238000002156 mixing Methods 0.000 claims description 11
- OKTJSMMVPCPJKN-UHFFFAOYSA-N Carbon Chemical compound [C] OKTJSMMVPCPJKN-UHFFFAOYSA-N 0.000 claims description 10
- 238000010790 dilution Methods 0.000 claims description 10
- 239000012895 dilution Substances 0.000 claims description 10
- 125000002887 hydroxy group Chemical group [H]O* 0.000 claims description 10
- 239000000956 alloy Substances 0.000 claims description 9
- 150000002576 ketones Chemical class 0.000 claims description 9
- 239000004593 Epoxy Substances 0.000 claims description 8
- 239000003822 epoxy resin Substances 0.000 claims description 8
- 229920000647 polyepoxide Polymers 0.000 claims description 8
- XAGFODPZIPBFFR-UHFFFAOYSA-N aluminium Chemical compound [Al] XAGFODPZIPBFFR-UHFFFAOYSA-N 0.000 claims description 7
- 229910052782 aluminium Inorganic materials 0.000 claims description 7
- 235000019832 sodium triphosphate Nutrition 0.000 claims description 7
- UNXRWKVEANCORM-UHFFFAOYSA-I triphosphate(5-) Chemical compound [O-]P([O-])(=O)OP([O-])(=O)OP([O-])([O-])=O UNXRWKVEANCORM-UHFFFAOYSA-I 0.000 claims description 7
- LRXTYHSAJDENHV-UHFFFAOYSA-H zinc phosphate Chemical compound [Zn+2].[Zn+2].[Zn+2].[O-]P([O-])([O-])=O.[O-]P([O-])([O-])=O LRXTYHSAJDENHV-UHFFFAOYSA-H 0.000 claims description 7
- 229910000165 zinc phosphate Inorganic materials 0.000 claims description 7
- NIXOWILDQLNWCW-UHFFFAOYSA-M Acrylate Chemical compound [O-]C(=O)C=C NIXOWILDQLNWCW-UHFFFAOYSA-M 0.000 claims description 5
- FPAFDBFIGPHWGO-UHFFFAOYSA-N dioxosilane;oxomagnesium;hydrate Chemical compound O.[Mg]=O.[Mg]=O.[Mg]=O.O=[Si]=O.O=[Si]=O.O=[Si]=O.O=[Si]=O FPAFDBFIGPHWGO-UHFFFAOYSA-N 0.000 claims description 5
- 239000002270 dispersing agent Substances 0.000 claims description 4
- 239000000843 powder Substances 0.000 claims description 4
- 239000007787 solid Substances 0.000 claims description 4
- 230000008033 biological extinction Effects 0.000 claims description 3
- 238000007789 sealing Methods 0.000 claims description 2
- 239000003381 stabilizer Substances 0.000 claims 1
- 239000000853 adhesive Substances 0.000 abstract description 11
- 230000001070 adhesive effect Effects 0.000 abstract description 11
- 238000010276 construction Methods 0.000 abstract description 6
- 238000012360 testing method Methods 0.000 description 8
- 238000001035 drying Methods 0.000 description 7
- 230000009286 beneficial effect Effects 0.000 description 5
- 238000005336 cracking Methods 0.000 description 5
- 238000011049 filling Methods 0.000 description 5
- 239000000463 material Substances 0.000 description 5
- 238000000227 grinding Methods 0.000 description 4
- 229920002635 polyurethane Polymers 0.000 description 4
- 150000003839 salts Chemical class 0.000 description 4
- XEKOWRVHYACXOJ-UHFFFAOYSA-N Ethyl acetate Chemical compound CCOC(C)=O XEKOWRVHYACXOJ-UHFFFAOYSA-N 0.000 description 3
- 241000208227 Toxicodendron vernicifluum Species 0.000 description 3
- 230000002159 abnormal effect Effects 0.000 description 3
- XECAHXYUAAWDEL-UHFFFAOYSA-N acrylonitrile butadiene styrene Chemical compound C=CC=C.C=CC#N.C=CC1=CC=CC=C1 XECAHXYUAAWDEL-UHFFFAOYSA-N 0.000 description 3
- 229920000122 acrylonitrile butadiene styrene Polymers 0.000 description 3
- 239000004676 acrylonitrile butadiene styrene Substances 0.000 description 3
- 230000032683 aging Effects 0.000 description 3
- 238000009835 boiling Methods 0.000 description 3
- 230000007547 defect Effects 0.000 description 3
- 239000004417 polycarbonate Substances 0.000 description 3
- 239000007921 spray Substances 0.000 description 3
- 241001448624 Miliaria Species 0.000 description 2
- 239000011248 coating agent Substances 0.000 description 2
- 238000000576 coating method Methods 0.000 description 2
- 238000010438 heat treatment Methods 0.000 description 2
- 238000011056 performance test Methods 0.000 description 2
- 239000000049 pigment Substances 0.000 description 2
- 238000010998 test method Methods 0.000 description 2
- 241001163841 Albugo ipomoeae-panduratae Species 0.000 description 1
- 230000004913 activation Effects 0.000 description 1
- 239000002390 adhesive tape Substances 0.000 description 1
- 230000005587 bubbling Effects 0.000 description 1
- 238000006243 chemical reaction Methods 0.000 description 1
- 238000000748 compression moulding Methods 0.000 description 1
- 238000009833 condensation Methods 0.000 description 1
- 230000005494 condensation Effects 0.000 description 1
- 238000001816 cooling Methods 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 238000002474 experimental method Methods 0.000 description 1
- 239000000945 filler Substances 0.000 description 1
- 239000005002 finish coating Substances 0.000 description 1
- 238000005187 foaming Methods 0.000 description 1
- JEIPFZHSYJVQDO-UHFFFAOYSA-N iron(III) oxide Inorganic materials O=[Fe]O[Fe]=O JEIPFZHSYJVQDO-UHFFFAOYSA-N 0.000 description 1
- 230000007774 longterm Effects 0.000 description 1
- 239000002932 luster Substances 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 238000010422 painting Methods 0.000 description 1
- 239000012994 photoredox catalyst Substances 0.000 description 1
- 229920000515 polycarbonate Polymers 0.000 description 1
- 230000037452 priming Effects 0.000 description 1
- 239000004576 sand Substances 0.000 description 1
- 239000000243 solution Substances 0.000 description 1
- 238000005507 spraying Methods 0.000 description 1
- 239000002344 surface layer Substances 0.000 description 1
- 238000003878 thermal aging Methods 0.000 description 1
- 239000006097 ultraviolet radiation absorber Substances 0.000 description 1
- 239000002966 varnish Substances 0.000 description 1
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 1
- 230000002087 whitening effect Effects 0.000 description 1
- 229910052724 xenon Inorganic materials 0.000 description 1
- FHNFHKCVQCLJFQ-UHFFFAOYSA-N xenon atom Chemical compound [Xe] FHNFHKCVQCLJFQ-UHFFFAOYSA-N 0.000 description 1
- 239000008096 xylene Substances 0.000 description 1
Classifications
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- C—CHEMISTRY; METALLURGY
- C09—DYES; PAINTS; POLISHES; NATURAL RESINS; ADHESIVES; COMPOSITIONS NOT OTHERWISE PROVIDED FOR; APPLICATIONS OF MATERIALS NOT OTHERWISE PROVIDED FOR
- C09D—COATING COMPOSITIONS, e.g. PAINTS, VARNISHES OR LACQUERS; FILLING PASTES; CHEMICAL PAINT OR INK REMOVERS; INKS; CORRECTING FLUIDS; WOODSTAINS; PASTES OR SOLIDS FOR COLOURING OR PRINTING; USE OF MATERIALS THEREFOR
- C09D175/00—Coating compositions based on polyureas or polyurethanes; Coating compositions based on derivatives of such polymers
- C09D175/04—Polyurethanes
-
- 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
- C09D163/00—Coating compositions based on epoxy resins; Coating compositions based on derivatives of epoxy resins
-
- 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
- C09D5/002—Priming 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
-
- 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
- C09F—NATURAL RESINS; FRENCH POLISH; DRYING-OILS; OIL DRYING AGENTS, i.e. SICCATIVES; TURPENTINE
- C09F9/00—Compounds to be used as driers, i.e. siccatives
Landscapes
- Chemical & Material Sciences (AREA)
- Organic Chemistry (AREA)
- Life Sciences & Earth Sciences (AREA)
- Engineering & Computer Science (AREA)
- Materials Engineering (AREA)
- Wood Science & Technology (AREA)
- Inorganic Chemistry (AREA)
- Paints Or Removers (AREA)
Abstract
The invention discloses a vehicle-mounted magnesium alloy PU piano black paint which comprises a primer, a middle paint and a finish paint, wherein the finish paint comprises the following components in parts by mass: 3-6 parts of polyester resin, 50-60 parts of high-hydroxyl acrylic resin, 10-15 parts of medium-hydroxyl acrylic resin, 10-15 parts of dimethylbenzene, 6-10 parts of butyl acetate, 0.05-0.1 part of drier, 0.3-5 parts of flatting agent, 0.5-1 part of ultraviolet absorbent and 0.2-0.5 part of ultraviolet stabilizer. The magnesium alloy PU piano black paint for vehicles has the characteristics of good stability, strong adhesive force and good construction property.
Description
Technical Field
The invention relates to the technical field of baking finish coatings, in particular to a vehicle-mounted magnesium alloy PU piano black paint.
Background
At present, a lot of coating materials are coated on the surface layer of a magnesium alloy material in the market, the paints are only used in some consumer products with low performance requirements, the performance requirements of automotive upholsteries cannot be met when the paints are used in the automotive upholsteries, especially parts of a multimedia console, are exposed to high temperature for a long time under a windshield or placed under ice-cold conditions, and the performance requirements of the paints are many times higher than those of the consumer products; for example, the magnesium alloy paint in the past can only pass 80 ℃ for 30 minutes in the boiling performance test, the requirement of the automotive interior part is 100 ℃ for 2 hours, the xenon lamp test in the weather resistance test is not required, and the like.
The conventional multimedia center console bracket of an automobile is made of a PC (polycarbonate) and ABS (acrylonitrile butadiene styrene), the conventional material is replaced by a magnesium alloy material in order to improve the better stability of the product and reduce the defects of abnormal sound, deformation and the like of the product in the long-term use process, and if the magnesium alloy material is sprayed by paint made of the PC and ABS material, the requirement on many performances such as unqualified adhesive force and the like cannot be met.
Disclosure of Invention
The invention aims to provide a vehicle-mounted magnesium alloy PU piano black paint which has the characteristics of good stability, good performance and good construction performance.
The invention can be realized by the following technical scheme:
the invention discloses a vehicle-mounted magnesium alloy PU piano black paint which comprises a primer, a middle paint and a finish paint, wherein the finish paint comprises the following components in parts by mass: 3-6 parts of polyester resin, 50-60 parts of high-hydroxyl acrylic resin, 10-15 parts of medium-hydroxyl acrylic resin, 10-15 parts of dimethylbenzene, 6-10 parts of butyl acetate, 0.05-0.1 part of drier, 0.3-5 parts of flatting agent, 0.5-1 part of ultraviolet absorbent and 0.2-0.5 part of ultraviolet stabilizer.
Further, the leveling agent is a composite leveling agent, and the composite leveling agent comprises a 3700 leveling agent and a BYK333 leveling agent in a mass ratio of 2: 1.
Furthermore, the model of the polyester resin is DSP315, the model of the high hydroxyl acrylic resin is 3270 resin, the model of the medium hydroxyl acrylic resin is BL616, and the model of the drier is T12.
Further, the preparation method of the finish paint comprises the following steps: firstly adding DSP315, 3270 resin and BL616 resin, adding dimethylbenzene and butyl acetate, adding into a stirrer, and dispersedly stirring for 10 minutes at 300 revolutions per minute; adding the T-12 drier, the 3700 flatting agent and the BYK333, stirring at 300 r/min for dispersing and stirring for 10 minutes, adding the PMA and the DAA, and stirring at 300 r/min for dispersing and stirring for 15 minutes.
Furthermore, a curing agent is added to the finish paint, and the curing agent is formed by mixing N3390 and butyl acetate according to the mass ratio of 1: 1.
Further, a diluent is also used in the use process of the finish paint, and the diluent comprises the following components in parts by mass: 50 parts of butyl acetate, 5 parts of PMA, 10 parts of ketone, 20 parts of butanone and 15 parts of DAA.
Further, the oil-boiling proportion of the paint is as follows: painting: curing agent: the construction was carried out with a dilution ratio of 3:1:1 and a viscosity controlled at 10 seconds.
Further, the baking conditions of the finishing coat are as follows: the baking temperature is 75-80 ℃ and lasts for 2 hours.
Further, the primer is an epoxy curing system primer, and the epoxy curing system primer comprises the following components in parts by mass: 93 parts of semi-finished color paste, 5 parts of epoxy resin, 1.5 parts of butyl acetate and 0.5 part of 3700 acrylate leveling agent with 10 percent of solid content.
Further, the semi-finished color paste comprises the following components in parts by mass: 12 parts of butyl acetate, 5 parts of n-butanol, 2 parts of dispersant BYK163, 2 parts of Degussa No. 6 carbon powder, 35 parts of epoxy resin, 18.5 parts of 2000-mesh A90 talcum powder, 10.5 parts of barium sulfate, 10 parts of aluminum tripolyphosphate and 5 parts of zinc phosphate.
Further, the medium paint comprises the following components in parts by mass: 3451 Low-strength hydroxy acrylic resin 45 parts, special modified resin 15 parts, drier T-12 0.05 part, E1011 extinction powder 3 parts, PU color paste 21 parts, butyl acetate 8.95 parts, butanone 6 parts, and LTW resin 1 part.
The magnesium alloy PU piano black paint for the vehicle has the following beneficial effects:
the magnesium alloy PU baking paint adopts an epoxy curing system as a primer, selects a PU system with good workability and drying property and lower hydroxyl value as a medium paint, selects high-hydroxyl acrylic resin with high solid content and low viscosity to be matched with polyurethane acrylic resin with medium hydroxyl value to provide excellent paint film performance and workability, adopts polyester resin to improve the fullness and luster of a paint film and overcome the miliaria defect of PU bright paint in the construction process, adopts a common T12 drier as the basic drying of the paint film, and is matched with a low-temperature enclosed drier (which is beneficial to drying the paint film at low temperature in the drying process to prolong the activation period of spray paint and simultaneously solves the miliaria problem caused by quick-drying and sealing films on the surface of the T12 paint film) to form the double-component polyurethane acrylate paint.
Detailed Description
In order to make the technical solution of the present invention better understood by those skilled in the art, the following provides a detailed description of the product of the present invention with reference to the examples.
The invention discloses a vehicle-mounted magnesium alloy PU piano black paint which comprises a primer, a middle paint and a finish paint, wherein the finish paint comprises the following components in parts by mass: 3-6 parts of polyester resin, 50-60 parts of high-hydroxyl acrylic resin, 10-15 parts of medium-hydroxyl acrylic resin, 10-15 parts of dimethylbenzene, 6-10 parts of butyl acetate, 0.05-0.1 part of drier, 0.3-5 parts of flatting agent, 0.5-1 part of ultraviolet absorbent and 0.2-0.5 part of ultraviolet stabilizer. . .
Further, the leveling agent is a composite leveling agent, and the composite leveling agent comprises a 3700 leveling agent and a BYK333 leveling agent in a mass ratio of 2: 1.
Furthermore, the model of the polyester resin is DSP315, the model of the high hydroxyl acrylic resin is 3270 resin, the model of the medium hydroxyl acrylic resin is BL616, and the model of the drier is T12.
Further, the preparation method of the finish paint comprises the following steps: firstly adding DSP315, 3270 resin and BL616 resin, adding dimethylbenzene and butyl acetate into a stirrer, and dispersedly stirring for 10 minutes at 300 revolutions per minute; adding the T-12 drier, the 3700 flatting agent and the BYK333, stirring at 300 r/min for dispersing and stirring for 10 minutes, and adding the PMA and the DAA at 300 r/min for dispersing and stirring for 15 minutes.
Furthermore, a curing agent is added to the finish paint, and the curing agent is formed by mixing N3390 and butyl acetate according to the mass ratio of 1: 1.
Further, a diluent is also used in the use process of the finish paint, and the diluent comprises the following components in parts by mass: 50 parts of butyl acetate, 5 parts of PMA, 10 parts of ketone, 20 parts of butanone and 15 parts of DAA, wherein the dilution ratio is 3:1:1, and the viscosity is controlled at 10 seconds.
Further, the baking conditions of the finishing coat are as follows: the baking temperature is 75-80 ℃ and lasts for 2 hours.
In the invention, the primer is an epoxy curing system primer, and the epoxy curing system primer comprises the following components in parts by mass: 93 parts of semi-finished color paste, 5 parts of epoxy resin, 1.5 parts of butyl acetate and 0.5 part of 3700 acrylate leveling agent with 10 percent of solid content.
The epoxy curing system is adopted as the primer, has good wrapping property, has excellent adhesive force with magnesium alloy materials and surface paint, and has better adhesive force stability than a polyurethane system. The polyurethane system in the prior art is placed for a period of time after paint spraying, and the adhesion is unstable due to the post-reaction process, so that the other aging resistance is also poor.
In the primer, the different components function as:
epoxy resin: the main resin has excellent performance stability and adhesive force.
10%3700 of acrylate type leveling agent: has proper surface tension, stronger stain resistance and good recoatability.
The preparation method of the primer comprises the following steps: the materials are sequentially fed, dispersed and stirred for 20 minutes at 300 r/min and then detected.
Specifically, in the primer, the semi-finished color paste comprises the following components in parts by mass: 12 parts of butyl acetate, 5 parts of n-butanol, 2 parts of dispersant BYK163, 2 parts of Degussa No. 6 carbon powder, 35 parts of epoxy resin, 18.5 parts of 2000-mesh A90 talcum powder, 10.5 parts of barium sulfate, 10 parts of aluminum tripolyphosphate and 5 parts of zinc phosphate.
In the semi-finished color paste, the different components are as follows:
a90 Talc powder: the thickness is 2000 meshes, the filling property is good, and the unevenness of the bottom pit is overcome.
Barium sulfate: good filling property and is beneficial to grinding and dispersing carbon powder.
Aluminum tripolyphosphate: good filling property and is beneficial to grinding and dispersing carbon powder.
Zinc phosphate: good filling property and is beneficial to grinding and dispersing carbon powder.
The A90 talcum powder, barium sulfate, aluminum tripolyphosphate and zinc phosphate have good filling property, can overcome the defect that a plurality of pits exist on the surface of a magnesium alloy material which is subjected to compression molding, and can improve the flatness of a paint film.
Aluminum tripolyphosphate, zinc phosphate: the paint is used in various priming paints and primer-topcoat paints, has good affinity with varnish, can be used together with various pigments and fillers, and can also be used together with various antirust pigments, so that the salt spray performance and the aging resistance of a paint film are improved.
The preparation method of the semi-finished color paste comprises the following steps: sequentially adding butyl acetate, n-butyl alcohol and a dispersing agent, uniformly dispersing and stirring at 200 r/min, adding Desgassex 6# carbon powder and epoxy resin after 2 minutes, dispersing and stirring at 300 r/min for 5 minutes, adding barium sulfate, aluminum tripolyphosphate and zinc phosphate, dispersing and stirring at 500 r/min for 20 minutes, and grinding to 10 microns in fineness by a sand mill to obtain the semi-finished color paste.
In the finish paint, a curing agent is added according to actual needs, wherein the curing agent in the finish paint comprises the following components in parts by mass: 4118 is 25 parts, has strong adhesion and good powder wrapping property; 51 parts of butyl acetate and 24 parts of n-butanol.
The finish paint also relates to the use of a diluent in the using process, and the diluent is formed by mixing butyl acetate and n-butyl alcohol according to the proportion of 1: 1. The dilution ratio is 4:1:1, the viscosity is controlled at 9.0 seconds (2 # cup in salt pan); the baking temperature is 75-80 ℃ for 40 minutes in the using process.
In the invention, the medium paint comprises the following components in parts by mass: 3451 Low-strength hydroxy acrylic resin 45 parts, special modified resin 15 parts, drier T-12 0.05 part, E1011 extinction powder 3 parts, PU color paste 21 parts, butyl acetate 8.95 parts, butanone 6 parts, and LTW resin 1 part.
In the invention, a PU system with good construction performance, good drying performance and low hydroxyl value is selected as the intermediate coat. The preparation method comprises the following steps: the materials are fed according to the formula and are dispersedly stirred for 20 minutes at 500 revolutions per minute.
In the preparation process of the Chinese lacquer, a curing agent is added according to actual needs, and the curing agent of the Chinese lacquer is prepared by mixing N3390 and ethyl acetate according to the mass ratio of 1: 1.
In the using process of the Chinese lacquer, a diluent is also needed, and the diluent is prepared by mixing the following components in parts by mass: 50 parts of butyl acetate, 5 parts of PMA, 10 parts of ketone, 20 parts of butanone and 15 parts of DAA. Dilution of
The ratio is 5:1:5, the viscosity is controlled to be 9.0 seconds (2 # cup in salt pan); the baking temperature is 75-80 ℃ for 40 minutes.
Example 1
The invention discloses a vehicle-mounted magnesium alloy PU piano black paint which comprises a primer, a middle paint and a finish paint, wherein the finish paint comprises the following components in parts by mass: 6 parts of polyester resin, 55 parts of high-hydroxyl acrylic resin, 10 parts of medium-hydroxyl acrylic resin, 15 parts of dimethylbenzene, 8 parts of butyl acetate, 0.05 part of drier, 5 parts of flatting agent, 0.75 part of ultraviolet absorbent and 0.2 part of ultraviolet stabilizer.
In this embodiment, the leveling agent is a composite leveling agent, and the composite leveling agent includes 3700 leveling agent and BYK333 leveling agent in a mass ratio of 2: 1. The model of the polyester resin is DSP315, the model of the high-hydroxyl acrylic resin is 3270 resin, the model of the medium-hydroxyl acrylic resin is BL616, and the model of the drier is T12.
In this embodiment, the preparation method of the top coat is as follows: firstly adding DSP315, 3270 resin and BL616 resin, adding dimethylbenzene and butyl acetate, adding into a stirrer, and dispersedly stirring for 10 minutes at 300 revolutions per minute; adding the T-12 drier, the 3700 flatting agent and the BYK333, stirring at 300 r/min for dispersing and stirring for 10 minutes, and adding the PMA and the DAA at 300 r/min for dispersing and stirring for 15 minutes.
In the embodiment, according to actual needs, the finish paint is further added with a curing agent, and the curing agent is formed by mixing N3390 and butyl acetate according to a mass ratio of 1: 1.
In the embodiment, a diluent is also used in the use process of the finish paint, and the diluent comprises the following components in parts by mass: 50 parts of butyl acetate, 5 parts of PMA, 10 parts of ketone, 20 parts of butanone and 15 parts of DAA, wherein the dilution ratio is as follows: curing agent: diluent = 3:1:1, viscosity controlled at 10 seconds. The baking conditions of the finishing coat are as follows: the baking temperature is 75-80 ℃ and lasts for 2 hours.
In this example, the primer and the middle coat were prepared in the above-described proportions.
Example 2
The invention discloses a vehicle-mounted magnesium alloy PU piano black paint which comprises a primer, a middle paint and a finish paint, wherein the finish paint comprises the following components in parts by mass: 4.5 parts of polyester resin, 50 parts of high-hydroxyl acrylic resin, 15 parts of medium-hydroxyl acrylic resin, 12.5 parts of dimethylbenzene, 6 parts of butyl acetate, 0.1 part of drier, 2.6 parts of flatting agent, 0.5 part of ultraviolet absorber and 0.5 part of ultraviolet stabilizer.
In this embodiment, the leveling agent is a composite leveling agent, and the composite leveling agent includes 3700 leveling agent and BYK333 leveling agent in a mass ratio of 2: 1. The model of the polyester resin is DSP315, the model of the high-hydroxyl acrylic resin is 3270 resin, the model of the medium-hydroxyl acrylic resin is BL616, and the model of the drier is T12.
In this embodiment, the preparation method of the top coat is as follows: firstly adding DSP315, 3270 resin and BL616 resin, adding dimethylbenzene and butyl acetate, adding into a stirrer, and dispersedly stirring for 10 minutes at 300 revolutions per minute; adding the T-12 drier, the 3700 flatting agent and the BYK333, stirring at 300 r/min for dispersing and stirring for 10 minutes, and adding the PMA and the DAA at 300 r/min for dispersing and stirring for 15 minutes.
In the embodiment, according to actual needs, the finish paint is further added with a curing agent, and the curing agent is formed by mixing N3390 and butyl acetate according to a mass ratio of 1: 1.
In the embodiment, a diluent is also used in the use process of the finish paint, and the diluent comprises the following components in parts by mass: 50 parts of butyl acetate, 5 parts of PMA, 10 parts of ketone, 20 parts of butanone and 15 parts of DAA, wherein the dilution ratio is 3:1:1, and the viscosity is controlled at 10 seconds. The baking conditions of the finishing coat are as follows: the baking temperature is 75-80 ℃ and lasts for 2 hours.
In this example, the primer and the middle coat were prepared in the above-described proportions.
Example 3
The invention discloses a vehicle-mounted magnesium alloy PU piano black paint which comprises a primer, a middle paint and a finish paint, wherein the finish paint comprises the following components in parts by mass: 3 parts of polyester resin, 60 parts of high-hydroxyl acrylic resin, 12.5 parts of medium-hydroxyl acrylic resin, 10 parts of dimethylbenzene, 10 parts of butyl acetate, 0.075 part of drier, 0.3 part of flatting agent, 1 part of ultraviolet absorbent and 0.35 part of ultraviolet stabilizer.
In this embodiment, the leveling agent is a composite leveling agent, and the composite leveling agent includes 3700 leveling agent and BYK333 leveling agent in a mass ratio of 2: 1. The model of the polyester resin is DSP315, the model of the high-hydroxyl acrylic resin is 3270 resin, the model of the medium-hydroxyl acrylic resin is BL616, and the model of the drier is T12.
In this embodiment, the preparation method of the top coat is as follows: firstly adding DSP315, 3270 resin and BL616 resin, adding dimethylbenzene and butyl acetate, adding into a stirrer, and dispersedly stirring for 10 minutes at 300 revolutions per minute; adding the T-12 drier, the 3700 flatting agent and the BYK333, stirring at 300 r/min for dispersing and stirring for 10 minutes, and adding the PMA and the DAA at 300 r/min for dispersing and stirring for 15 minutes.
In the embodiment, according to actual needs, the finish paint is further added with a curing agent, and the curing agent is formed by mixing N3390 and butyl acetate according to a mass ratio of 1: 1.
In the embodiment, a diluent is also used in the use process of the finish paint, and the diluent comprises the following components in parts by mass: 50 parts of butyl acetate, 5 parts of PMA, 10 parts of ketone, 20 parts of butanone and 15 parts of DAA, wherein the dilution ratio is 3:1:1, and the viscosity is controlled at 10 seconds. The baking conditions of the finishing coat are as follows: the baking temperature is 75-80 ℃ and lasts for 2 hours.
In this example, the primer and the middle coat were prepared in the above-described proportions.
Example 4
The invention discloses a vehicle-mounted magnesium alloy PU piano black paint which comprises a primer, a middle paint and a finish paint, wherein the finish paint comprises the following components in parts by mass: 4 parts of polyester resin, 52 parts of high-hydroxyl acrylic resin, 12 parts of medium-hydroxyl acrylic resin, 14 parts of xylene, 9 parts of butyl acetate, 0.06 part of drier, 3 parts of flatting agent, 0.8 part of ultraviolet absorbent and 0.4 part of ultraviolet stabilizer.
In this embodiment, the leveling agent is a composite leveling agent, and the composite leveling agent includes 3700 leveling agent and BYK333 leveling agent in a mass ratio of 2: 1. The type of the polyester resin is DSP315, the type of the high-hydroxyl acrylic resin is 3270 resin, the type of the medium-hydroxyl acrylic resin is BL616, and the type of the drier is organotin T12 matched with the low-temperature closed drier.
In this embodiment, the preparation method of the top coat is as follows: firstly adding DSP315, 3270 resin and BL616 resin, adding dimethylbenzene and butyl acetate, adding into a stirrer, and dispersedly stirring for 10 minutes at 300 revolutions per minute; adding T-12 drier, 3700 flatting agent and BYK333, stirring at 300 r/min for 10 min, adding PMA and DAA at 300 r/min, and stirring for 15 min.
In the embodiment, according to actual requirements, the finishing paint is further added with a curing agent, and the curing agent is formed by mixing N3390 and butyl acetate according to a mass ratio of 1: 1.
In the embodiment, a diluent is also used in the use process of the finish paint, and the diluent comprises the following components in parts by mass: 50 parts of butyl acetate, 5 parts of PMA, 10 parts of ketone, 20 parts of butanone and 15 parts of DAA, wherein the dilution ratio is 3:1:1, and the viscosity is controlled at 10 seconds. The baking conditions of the finishing coat are as follows: the baking temperature is 75-80 ℃ and lasts for 2 hours.
In this example, the primer and the middle coat were prepared in the above-described proportions.
Example 5
The invention discloses a vehicle-mounted magnesium alloy PU piano black paint which comprises a primer, a middle paint and a finish paint, wherein the finish paint comprises the following components in parts by mass: 5 parts of polyester resin, 53.5 parts of high-hydroxyl acrylic resin, 12 parts of medium-hydroxyl acrylic resin, 11 parts of dimethylbenzene, 8 parts of butyl acetate, 0.05 part of drier, 0.45 part of flatting agent, 0.5-1 part of ultraviolet absorbent and 0.2-0.5 part of ultraviolet stabilizer.
In this embodiment, the leveling agent is a composite leveling agent, and the composite leveling agent includes 3700 leveling agent and BYK333 leveling agent in a mass ratio of 2: 1. The model of the polyester resin is DSP315, the model of the high-hydroxyl acrylic resin is 3270 resin, the model of the medium-hydroxyl acrylic resin is BL616, and the model of the drier is T12.
In this embodiment, the preparation method of the top coat is as follows: firstly adding DSP315, 3270 resin and BL616 resin, adding dimethylbenzene and butyl acetate, adding into a stirrer, and dispersedly stirring for 10 minutes at 300 revolutions per minute; adding the T-12 drier, the 3700 flatting agent and the BYK333, stirring at 300 r/min for dispersing and stirring for 10 minutes, and adding the PMA and the DAA at 300 r/min for dispersing and stirring for 15 minutes.
In the embodiment, according to actual needs, the finish paint is further added with a curing agent, and the curing agent is formed by mixing N3390 and butyl acetate according to a mass ratio of 1: 1.
In the embodiment, a diluent is also used in the use process of the finish paint, and the diluent comprises the following components in parts by mass: 50 parts of butyl acetate, 5 parts of PMA, 10 parts of ketone, 20 parts of butanone and 15 parts of DAA, wherein the dilution ratio is 3:1:1, and the viscosity is controlled at 10 seconds. The baking conditions of the finishing coat are as follows: the baking temperature is 75-80 ℃ and lasts for 2 hours.
In this example, the primer and the middle coat were prepared in the above-described proportions.
To evaluate the technical effect of the invention, the following performance tests were carried out on the products of examples 1 to 5:
1, evaluating construction application conditions: examples 1 to 5 all had suitability for workability, suitability for leveling preheating condition and suitability for drying condition in the appearance of a paint film.
2. Appearance: examples 1-5 have a uniform gloss of 90-95 °, good leveling and excellent fullness.
3. Adhesion force: taking 3 finished products or 3 samples of 150mm multiplied by 100mm, marking hundreds of grids according to ISO 2409 standard, rapidly pulling out by using adhesive tape, and ensuring that no grid on the surface of the paint film of the examples 1-5 falls off and the grade is 0.
4. Hardness (Chinese pencil/1 KG force) HB-H, and the paint film of each of examples 1-5 has no obvious scratch.
5. Friction resistance: the friction head is composed of a cylinder with the diameter of (16 +/-0.1) mm, pressure (9 +/-0.2) N is applied, and the linear reciprocating stroke is (104 +/-3) mm. Comparing the sample before and after: the gray grade of each sample of examples 1-5 is not lower than 4;
6. high and low temperature impact
3 finished products or 3 samples of 150mm × 100mm were taken and subjected to 20-cycle test under the following conditions of high and low temperature alternation. After the test, the appearance of the sample is checked to be not abnormal, and the adhesive force of the examples 1 to 5 is grade 1.
Description of the test procedure: standing at 23 deg.C and 30% humidity for 40 min; humidity is 30%, temperature is from 23 deg.C to-35 deg.C, and time is 90 min; keeping 35 x 30% for 60min, keeping humidity at 80%, heating to 50 deg.C, and maintaining for 80 min; keeping at 50 deg.C for 80% for 120 min; heating to 80 deg.C with 30% humidity for 30 min; keeping the temperature at 80 ℃ for 240 hours; cooling to 23 deg.C with 30% humidity for 60 min. Is a cycle.
7. And (3) condensate water test: 3 finished products or 150mm multiplied by 100mm samples are taken and tested according to the constant humidity condensation test method specified by the standard ISO 6270-2, the temperature is 40 +/-3 ℃, and the test time is 240 hours. After the experiment is finished, the product is placed at normal temperature for 30 minutes, no bubbling exists in the examples 1-5, the appearance is not obviously changed, and the adhesive force is grade 1.
8. Salt spray resistance: examples 1-5 all had no red rust and white rust for 96h, and the coating had no foaming, peeling, cracking and the like
9. Moisture resistance test: the paint films of the examples 1 to 5 have no 1-grade abnormal adhesion force such as cracking, whitening and the like after being heated at 90 ℃/96% for 72 hours.
10. Boiling resistance test: the paint films of examples 1-5 have no appearance change and the adhesive force is grade 1 at 100 ℃ for 4 hours.
11. Light resistance: 1.25w/m2 mm temperature scale 100 ℃ for 500 hours, the paint film has no change, no obvious color change and cracking phenomenon, and the adhesive force is grade 1.
12. The high-temperature heat aging is carried out at 105 ℃ for 500 hours, the paint film of the uniform film of the examples 1 to 5 has no change, has no obvious color change and cracking phenomenon, and has the adhesive force of grade 1
13. High-temperature thermal aging: the temperature of 105 ℃ is kept for 500 hours, the paint film of each of the films of examples 1-5 has no change, has no obvious color change and cracking phenomenon, and has the adhesive force of grade 1.
The above embodiments are only specific embodiments of the present invention, and the description thereof is specific and detailed, but not construed as limiting the scope of the present invention. It should be noted that, for a person skilled in the art, several variations and modifications are possible without departing from the inventive concept, and such obvious alternatives fall within the scope of the invention.
Claims (10)
1. The vehicle-mounted magnesium alloy PU piano black paint comprises a primer, a middle paint and a finish paint, and is characterized in that the finish paint comprises the following components in parts by mass: 3-6 parts of polyester resin, 50-60 parts of high-hydroxyl acrylic resin, 10-15 parts of medium-hydroxyl acrylic resin, 10-15 parts of dimethylbenzene, 6-10 parts of butyl acetate, 0.05-0.1 part of drier, 0.3-5 parts of flatting agent, 0.5-1 part of ultraviolet absorbent and 0.2-0.5 part of ultraviolet stabilizer.
2. The vehicle-mounted magnesium alloy PU piano black paint according to claim 1, is characterized in that: the leveling agent is a composite leveling agent, and the composite leveling agent comprises a 3700 leveling agent and a BYK333 leveling agent in a mass ratio of 2: 1.
3. The vehicle-mounted magnesium alloy material PU piano black paint according to claim 2, is characterized in that: the type of the polyester resin is DSP315, the type of the high-hydroxyl acrylic resin is 3270 resin, the type of the medium-hydroxyl acrylic resin is BL616, the type of the drier is T12 matched with the low-temperature sealing drier, the type of the ultraviolet absorbent is 292, and the type of the external line stabilizer is 1130.
4. The vehicle-mounted magnesium alloy PU piano black paint according to claim 3, is characterized in that: the preparation method of the finish paint comprises the following steps: firstly adding DSP315, 3270 resin and BL616 resin, adding dimethylbenzene and butyl acetate, adding into a stirrer, and dispersedly stirring for 10 minutes at 300 revolutions per minute; adding the T-12 drier, the 3700 flatting agent and the BYK333, stirring at 300 r/min for dispersing and stirring for 10 minutes, and adding the PMA and the DAA at 300 r/min for dispersing and stirring for 15 minutes.
5. The vehicle-mounted magnesium alloy PU piano black paint according to claim 4, is characterized in that: the finish paint is also added with a curing agent, and the curing agent is formed by mixing N3390 and butyl acetate according to the mass ratio of 1: 1.
6. The vehicle-mounted magnesium alloy PU piano black paint according to claim 5, is characterized in that: the finishing paint also uses a diluent in the using process, and the diluent comprises the following components in parts by mass: 50 parts of butyl acetate, 5 parts of PMA, 10 parts of ketone, 20 parts of butanone and 15 parts of DAA, wherein the dilution ratio is 3:1:1, and the viscosity is controlled at 10 seconds.
7. The vehicle-mounted magnesium alloy PU piano black paint according to claim 6, is characterized in that: the baking conditions of the finishing paint are as follows: the baking temperature is 75-80 ℃ and lasts for 2 hours.
8. The vehicle-mounted magnesium alloy material PU piano black paint according to claim 7, is characterized in that: the primer is an epoxy curing system primer, and the epoxy curing system primer comprises the following components in parts by mass: 93 parts of semi-finished color paste, 5 parts of epoxy resin, 1.5 parts of butyl acetate and 0.5 part of 3700 acrylate leveling agent with 10 percent of solid content.
9. The vehicle-mounted magnesium alloy material PU piano black paint according to claim 8, is characterized in that: the semi-finished color paste comprises the following components in parts by mass: 12 parts of butyl acetate, 5 parts of n-butanol, 2 parts of dispersant BYK163, 2 parts of Degussa No. 6 carbon powder, 35 parts of epoxy resin, 18.5 parts of 2000-mesh A90 talcum powder, 10.5 parts of barium sulfate, 10 parts of aluminum tripolyphosphate and 5 parts of zinc phosphate.
10. The vehicle-mounted magnesium alloy material PU piano black paint according to claim 9, is characterized in that: the medium paint comprises the following components in parts by mass: 3451 Low-strength hydroxy acrylic resin 45 parts, special modified resin 15 parts, drier T-12 0.05 part, E1011 extinction powder 3 parts, PU color paste 21 parts, butyl acetate 8.95 parts, butanone 6 parts, and LTW resin 1 part.
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| Application Number | Priority Date | Filing Date | Title |
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| CN202111576799.5A CN114456693A (en) | 2021-12-22 | 2021-12-22 | Magnesium alloy PU piano black paint for vehicle |
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| CN202111576799.5A CN114456693A (en) | 2021-12-22 | 2021-12-22 | Magnesium alloy PU piano black paint for vehicle |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN115637101A (en) * | 2022-11-08 | 2023-01-24 | 广东安捷伦新材料科技有限公司 | Varnish for automotive interior parts and preparation method thereof |
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| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101463220A (en) * | 2009-01-06 | 2009-06-24 | 深圳桑菲消费通信有限公司 | UV coating for spraying magnesium aluminum alloy surface |
| CN104312399A (en) * | 2014-06-11 | 2015-01-28 | 郑州精益达汽车零部件有限公司 | Black top paint with high blackness and blue phase, and preparation method thereof |
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2021
- 2021-12-22 CN CN202111576799.5A patent/CN114456693A/en active Pending
Patent Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101463220A (en) * | 2009-01-06 | 2009-06-24 | 深圳桑菲消费通信有限公司 | UV coating for spraying magnesium aluminum alloy surface |
| CN104312399A (en) * | 2014-06-11 | 2015-01-28 | 郑州精益达汽车零部件有限公司 | Black top paint with high blackness and blue phase, and preparation method thereof |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN115637101A (en) * | 2022-11-08 | 2023-01-24 | 广东安捷伦新材料科技有限公司 | Varnish for automotive interior parts and preparation method thereof |
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