CN107057536A - A kind of body of a motor car special coating and its preparation method and application - Google Patents
A kind of body of a motor car special coating and its preparation method and application Download PDFInfo
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- CN107057536A CN107057536A CN201710320690.2A CN201710320690A CN107057536A CN 107057536 A CN107057536 A CN 107057536A CN 201710320690 A CN201710320690 A CN 201710320690A CN 107057536 A CN107057536 A CN 107057536A
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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
- C09D167/00—Coating compositions based on polyesters obtained by reactions forming a carboxylic ester link in the main chain; Coating compositions based on derivatives of such polymers
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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
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- C—CHEMISTRY; METALLURGY
- C09—DYES; PAINTS; POLISHES; NATURAL RESINS; ADHESIVES; COMPOSITIONS NOT OTHERWISE PROVIDED FOR; APPLICATIONS OF MATERIALS NOT OTHERWISE PROVIDED FOR
- C09D—COATING COMPOSITIONS, e.g. PAINTS, VARNISHES OR LACQUERS; FILLING PASTES; CHEMICAL PAINT OR INK REMOVERS; INKS; CORRECTING FLUIDS; WOODSTAINS; PASTES OR SOLIDS FOR COLOURING OR PRINTING; USE OF MATERIALS THEREFOR
- C09D7/00—Features of coating compositions, not provided for in group C09D5/00; Processes for incorporating ingredients in coating compositions
- C09D7/40—Additives
- C09D7/60—Additives non-macromolecular
- C09D7/61—Additives non-macromolecular inorganic
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- C—CHEMISTRY; METALLURGY
- C09—DYES; PAINTS; POLISHES; NATURAL RESINS; ADHESIVES; COMPOSITIONS NOT OTHERWISE PROVIDED FOR; APPLICATIONS OF MATERIALS NOT OTHERWISE PROVIDED FOR
- C09D—COATING COMPOSITIONS, e.g. PAINTS, VARNISHES OR LACQUERS; FILLING PASTES; CHEMICAL PAINT OR INK REMOVERS; INKS; CORRECTING FLUIDS; WOODSTAINS; PASTES OR SOLIDS FOR COLOURING OR PRINTING; USE OF MATERIALS THEREFOR
- C09D7/00—Features of coating compositions, not provided for in group C09D5/00; Processes for incorporating ingredients in coating compositions
- C09D7/40—Additives
- C09D7/60—Additives non-macromolecular
- C09D7/63—Additives non-macromolecular organic
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- C—CHEMISTRY; METALLURGY
- C09—DYES; PAINTS; POLISHES; NATURAL RESINS; ADHESIVES; COMPOSITIONS NOT OTHERWISE PROVIDED FOR; APPLICATIONS OF MATERIALS NOT OTHERWISE PROVIDED FOR
- C09D—COATING COMPOSITIONS, e.g. PAINTS, VARNISHES OR LACQUERS; FILLING PASTES; CHEMICAL PAINT OR INK REMOVERS; INKS; CORRECTING FLUIDS; WOODSTAINS; PASTES OR SOLIDS FOR COLOURING OR PRINTING; USE OF MATERIALS THEREFOR
- C09D7/00—Features of coating compositions, not provided for in group C09D5/00; Processes for incorporating ingredients in coating compositions
- C09D7/40—Additives
- C09D7/65—Additives macromolecular
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- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08K—Use of inorganic or non-macromolecular organic substances as compounding ingredients
- C08K3/00—Use of inorganic substances as compounding ingredients
- C08K3/18—Oxygen-containing compounds, e.g. metal carbonyls
- C08K3/20—Oxides; Hydroxides
- C08K3/22—Oxides; Hydroxides of metals
- C08K2003/2237—Oxides; Hydroxides of metals of titanium
- C08K2003/2241—Titanium dioxide
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- 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
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- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08L—COMPOSITIONS OF MACROMOLECULAR COMPOUNDS
- C08L2205/00—Polymer mixtures characterised by other features
- C08L2205/03—Polymer mixtures characterised by other features containing three or more polymers in a blend
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- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08L—COMPOSITIONS OF MACROMOLECULAR COMPOUNDS
- C08L2205/00—Polymer mixtures characterised by other features
- C08L2205/03—Polymer mixtures characterised by other features containing three or more polymers in a blend
- C08L2205/035—Polymer mixtures characterised by other features containing three or more polymers in a blend containing four or more polymers in a blend
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Abstract
The invention provides a kind of body of a motor car special coating and its preparation method and application, including priming paint, finish paint and varnish, three supports the use, and gained body of a motor car special coating has good weatherability, three painting matchings are excellent, coating can be up to crosslinking be fully cured, and solvent noresidue is not after-tacked, and good dispersion during spraying, good leveling property, thixotropy is moderate, coating uniform, without tangerine peel, without pinprick bubble, and free from admixture point is present.Lacquer painting levelling is plentiful, glossiness is good, clarity is high.
Description
Technical field
The invention belongs to coating preparation field, and in particular to a kind of body of a motor car special coating and preparation method thereof and should
With.
Background technology
With developing rapidly for modern economy, automobile oneself through being universal modern transportation instrument.It is used as automobile coat
Car paint, its chromaticity, the quality of paint film appearance, clarity, gloss etc. is all visual evaluation of the people to car mass,
It will directly determine the class of automobile, influence the competitiveness of automobile market.Other automobile lacquer coat is also that raising automobile product is resistance to
Corrosivity drinks one of major measure of extension automotive service life.
Requirement based on auto industry to automobile coating performance is high, wide in variety, consumption is big, and needs to have the application property of uniqueness
Energy and coating performance, therefore, automobile coating turn into a kind of special coating already.In the flourishing country of auto industry, car paint
Leading position is in the technology development of industrial coating, the 15%-20% of coating total output is typically constituted from, therefore it is to coating work
The influence of industry also has very important status, is the coating variety that countries in the world coatings industry is paid close attention to, in technical research
In occupy advanced and leading position.
World car has been achieved with four big updates with coating in last 100 yearses.From oiliness nitrate paint, (automobile sprays
Paint) expect electrophoretic coating and high-quality synthetic resin (epoxy, alkyd amino, third to synthetic resin coated based on alkyd and phenolic aldehyde
Diluted acid, poly- cruel, poly- ammonia a) coating arrive environment-friendly type coating etc. again.
Requirement for automotive coating is not only and to have excellent protectiveness to car body, and is to have to make us the reward heart and please
Purpose appearance characteristics, to meet different consumer demands.In order to reach this purpose, multi-layer coating body is taken car paint more
System, and per pass coating all has been assigned specific function.
The content of the invention
The invention provides a kind of body of a motor car special coating and its preparation method and application, including priming paint, colored paint and clear
Paint, three, which supports the use, is sprayed at body of a motor car electrophoresis workpieces surface so that body of a motor car has good weatherability, water-fast
Property, the paint film adhesion that is formed is strong, glossiness is good, high richness, high clarity after alcohol resistance, resistance to gasoline, and spraying.
The technical scheme that the present invention takes is：
A kind of body of a motor car special coating, the coating includes priming paint, finish paint, varnish, and the priming paint includes following weight
The raw material of part：
In above-mentioned formula, polyester resin and acrylic resin collocation are met on the basis of providing richness for priming paint
Dryness demand, SCA resins and bentonite realize excellent sag resistance, and blocked isocyanate meets the soft of body varnish
The balance of tough and adhesive force.
The finish paint includes the raw material of following parts by weight：
In above-mentioned formula, polyester resin 25-30, acrylic resin 5-10 and amino resins 10-15's uses cooperatively, and makes
Finish paint sprays to the paint film coating formed behind body of a motor car surface there is preferable pliability and resistance to stone to hit performance, it is and obtained
Finish paint black brittleness is preferable.Than the finish paint function admirable that pure thermosetting acrylic resin+amino resins scheme is obtained is used alone；
In this formula, introduce SCA resins and levelling agent collocation realize colored paint resist sagging and levelling it is perfectly balanced, meet automobile
The apperance requirement of coating, introduces enclosed type isocyanate resin to improve finish paint adhesive force and flexible demand, introduces fiber
Plain resin improves surface drying, introduces conductive agent, goes for electrostatic spraying.Hindered amine improves weather resistance, each original
Cooperated between material, obtain the finish paint of high comprehensive performance.
The varnish includes the raw material of following parts by weight：
Levelling agent in the lacquer formulation presses 1 by BYK-315N types levelling agent, BYK-390 types levelling agent:1 composition.
The UV absorbers by type UV absorbers of BASF TINUVIN 1130 of 1~1.5 parts by weight and 1~
The type UV absorbers of BASF TINUVIN 292 composition of 1.5 parts by weight.
In the formula of above-mentioned varnish, based on thermosetting acrylic resin, introduce SCA resins to ensure the stream of product
Performance is hung, the richness of varnish has been ensured；Organosilicon BYK-315N types levelling agent is added with acrylic acid BYK-390 types levelling agent to come
Ensure the clarity and surface levelling of paint film, shared to ensure paint film coating pole with triazole type and hindered amines UV absorbers
Good weatherability.Blocked isocyanate improves the pliability and adhesive force of product, and the shock resistance and resistance to stone for improving product are hit
Performance, the curing reaction for accelerating blocked isocyanate of drier.Durene, propylene glycol methyl ether acetate, front three
Benzene and DBE collocation meet it is solvent on the basis of realize the volatilization gradient of balance, it is ensured that the good appearance of product
Effect.
Present invention also offers the preparation method of above-mentioned body of a motor car special coating,
The preparation method of the priming paint is：
(1) 30-35 weight of polyester resins are stirred under the conditions of 300-700 revs/min, added under agitation
15-20 parts by weight titanium dioxide, 1-2 parts sulfuric acids barium, 0.1-0.3 parts by weight of bentonite, after adding, 700-1200 revs/min
Under the conditions of stir 10min, then, be ground to fineness less than 10 microns；
(2) raw material for obtaining step (1) is stirred under the conditions of 300-700 revs/min, and 10- is added under agitation
15 parts of acrylic resins, 8-12 parts of amino resins, 1-2 parts of SCA resins, 1-3 parts of sealed type isocyanates, 5-12 parts of dimethylbenzene,
2-8 parts of trimethylbenzenes, 1-5 parts of propylene glycol methyl ether acetates and 0.2-0.4 parts of levelling agents, adjust thickening degree to 60-70S (25 DEG C, NK-
2), 200 mesh are filtered, and priming paint is made.The priming paint prepared using above method and raw material has good water resistance, and and base
Material and finish paint have high matching.
The preparation method of the finish paint is：
(1) 25-30 weight of polyester resins are stirred under the conditions of 300-700 revs/min, added under agitation
15-20 parts by weight titanium dioxide, 0.1-0.3 parts by weight of bentonite, after adding, stir 10min under the conditions of 700-1200 revs/min,
Then, fineness is ground to less than 10 microns；
(2) raw material for obtaining step (2) is stirred under the conditions of 300-700 revs/min, and 5-10 is added under agitation
Part acrylic resin, 10-15 parts of amino resins, 1-2 parts of SCA resins, 1-3 parts of sealed type isocyanates, 4-12 parts of dimethylbenzene, 1-
2 parts of celluosic resins, 1-2 parts of propylene glycol methyl ether acetates, 1-2 hindered amines, 0.2-0.4 parts of conductive agents, 0.2-0.4 parts of levelling agents
With 5-12 parts of butyl acetates, adjust thickening degree to 60-70S (25 DEG C, NK-2), finish paint is made in the filtering of 200 mesh.
The preparation method of the varnish is：
(1) by 50-70 parts by weight thermosetting acrylic resin, 12-18 parts by weight amino resins, 8-12 parts by weight SCA trees
Fat and 5-10 parts by weight blocked isocyanate stir 10min at 300-700 revs/min, obtain compound A；
(2) trimethylbenzene of 5-10 parts by weight is stirred under the conditions of 300-700 revs/min, added under agitation
0.2-0.4 parts of conductive agents, 0.2-0.4 parts of drier, the UV absorbers of 1-1.5 parts by weight TINUVIN 1130 and 1-1.5 weights
The UV absorbers of part TINUVIN 292 are measured, 15min is stirred, obtains mixed material B；
(3) B is added in A, under 300-700 revs/min of stirring condition, adds 0.5-1 parts by weight levelling agents, wherein
The weight ratio of BYK-390 types levelling agent and BYK-315N type levelling agents is 1:1, stir 15min；
(4) continue under 300-700 revs/min of stirring condition, add 2-5 parts by weight durenes, 2-5 parts by weight of propylene glycol
Methyl ether acetate, 1-2 parts by weight DBE solvents, adjust thickening degree to 80-100S (25 DEG C, NK-2), the filtering of 300 mesh obtains varnish.
Present invention also offers the paint film coating system formed by body of a motor car special coating, by described priming paint and priming paint
Diluent presses 10:4 allotments；Finish paint presses 10 with finish paint diluent:4 allotments；Varnish presses 10 with varnish thinner:2 allotments；Then will
Priming paint, finish paint, varnish after allotment are sprayed at electrophoresis workpieces surface successively, form paint film coating system.
Priming paint, finish paint, the viscosity of varnish after the allotment are respectively 11.0-13.0S (25 DEG C, NK-2), 12.0-
14.0S (25 DEG C, NK-2), 26.0-32.0S (25 DEG C, NK-2).
The specific preparation method of the paint film coating is：By priming paint and priming paint diluent by weight 10：4 allotments, spraying
In electrophoresis workpieces surface, after normal temperature levelling is dried 8-10 minutes, next step top coat layer spraying is carried out；By finish paint and finish paint diluent
By weight 10：4 allotments, are sprayed on the prime coat of surface drying, after normal temperature levelling is dried 8-10 minutes, carry out next step varnish
Layer spraying；By varnish and varnish thinner by weight 10:2 allotments, are sprayed on the top coat layer of surface drying, and normal temperature levelling is dried
After 8-10 minutes, 140 DEG C of ± 10 DEG C/min baking and curings 30 minutes.Paint film coating is up to being fully cured crosslinking after solidification, solvent without
Residual is not after-tacked.
The varnish of above-mentioned preparation is supported the use with priming paint and finish paint, does not otherwise reach effect of the present invention, moreover,
In the R＆D process of varnish, priming paint and finish paint, the matching of the three considered, priming paint is provided between electrophoretic paint and finish paint
The excellent effect of forming a connecting link, there is excellent richness, outstanding adhesive force and a covering power, to improve ground flatness,
Improve the aesthetic appearance of vehicle and improve vehicle body anti-stoning energy, good basis is provided for the high clarity of composite coating,
Top coat layer realizes abundant Spanish furnish, meets the bright colors requirement of car paint, and varnish is last pipe protection layer,
Last outward appearance high glaze, high clarity, flatness are provided.Also provide to sunlight, acid rain, the scraping of branch or carwash etc. simultaneously
Protection.
The priming paint diluent and finish paint diluent include the raw material of following parts by weight：45 parts of dimethylbenzene；Trimethylbenzene 23
Part；12 parts of propylene glycol methyl ether acetate；20 parts of butyl acetate.Its preparation method is：The raw material of the recipe ratio is mixed
It is uniform at least 10 minutes, you can priming paint diluent and finish paint diluent is made.
The varnish thinner includes the raw material of following parts by weight：70 parts of durene；30 parts of trimethylbenzene.Its preparation method
For：The raw material of the recipe ratio is mixed evenly at least 10 minutes, you can varnish thinner is made.
Present invention also offers application of the described body of a motor car special coating in body of a motor car processing, by the coating
Body of a motor car is sprayed to, body of a motor car can be protected, beautifies vehicle body outward appearance.
Body of a motor car special coating disclosed by the invention, including priming paint, finish paint and varnish, three support the use, gained vapour
Car vehicle body special coating has good weatherability, and three's matching is excellent, and paint film coating, which can reach, is fully cured crosslinking, solvent
Noresidue is not after-tacked, moreover, good dispersion during spraying, good leveling property, thixotropy is moderate, coating uniform, without tangerine peel, without pinprick gas
Bubble, free from admixture point is present；Coating surface levelling is plentiful, glossiness is good.
Embodiment
Embodiment 1
A kind of body of a motor car special coating, including priming paint, finish paint and varnish；
The priming paint includes the raw material of following parts by weight, as shown in embodiment 1 in table 1：
The base paint formulation of table 1
The preparation method of the priming paint, comprises the following steps：
(1) polyester resin of formula ratio is stirred under the conditions of 300-700 revs/min, titanium white is added under agitation
Powder, barium sulfate, bentonite, after adding, stir 10min under the conditions of 700-1200 revs/min, then, are ground to fineness less than 10
Micron；
(2) raw material after step (1) is ground is stirred under the conditions of 300-700 revs/min, and third is added under agitation
Olefin(e) acid resin, amino resins, SCA resins, sealed type isocyanates, dimethylbenzene, trimethylbenzene, propylene glycol methyl ether acetate and levelling
Agent, adjusts thickening degree to 60-70S (25 DEG C, NK-2), priming paint is made in the filtering of 200 mesh.
The finish paint includes the raw material of following parts by weight, as shown in embodiment 1 in table 2：
The topcoat formulation of table 2
The preparation method of the finish paint comprises the following steps：
(1) polyester resin of formula ratio is stirred under the conditions of 300-700 revs/min, titanium white is added under agitation
Powder, bentonite, after adding, stir 10min under the conditions of 700-1200 revs/min, then, are ground to fineness less than 10 microns；
(2) raw material after step (1) is ground is stirred under the conditions of 300-700 revs/min, and third is added under agitation
Olefin(e) acid resin, amino resins, SCA resins, sealed type isocyanates, trimethylbenzene, celluosic resin, propylene glycol methyl ether acetate,
Hindered amine, conductive agent, levelling agent, butyl acetate, adjust thickening degree to 60-70S (25 DEG C, NK-2), finish paint is made in the filtering of 200 mesh.
The varnish includes the raw material of following parts by weight, as shown in embodiment 1 in table 3：
The lacquer formulation of table 3
The preparation technology of the varnish comprises the following steps：
(1) by the thermosetting acrylic resin of formula ratio, amino resins, SCA resins and blocked isocyanate in 300-
700 revs/min of stirring 10min, obtain compound A；
(2) trimethylbenzene is stirred under the conditions of 300-700 revs/min, under agitation add conductive agent, drier,
The UV absorbers of TINUVIN 1130 and the UV absorbers of TINUVIN 292, stir 15min, obtain mixed material B；
(3) B is added in A, under 300-700 revs/min of stirring condition, adds levelling agent BYK-390 and levelling agent
BYK-315N, stirs 15min；
(4) continue under 300-700 revs/min of stirring condition, add durene, propylene glycol methyl ether acetate, DBE are molten
Agent, adjusts thickening degree to 80-100S (25 DEG C, NK-2), the filtering of 300 mesh obtains varnish.
Embodiment 2
A kind of body of a motor car special coating, including priming paint, finish paint and varnish, the priming paint, finish paint, the formula difference of varnish
As shown in embodiment 3 in embodiment 3, table 3 in embodiment 3, table 2 in table 1.
The priming paint, finish paint, the priming paint in the preparation method difference be the same as Example 1 of varnish, finish paint, the preparation side of varnish
Method.
Embodiment 3
A kind of body of a motor car special coating, including priming paint, finish paint and varnish, the priming paint, finish paint, the formula difference of varnish
As shown in embodiment 3 in embodiment 3, table 3 in embodiment 3, table 2 in table 1.
The priming paint, finish paint, the priming paint in the preparation method difference be the same as Example 1 of varnish, finish paint, the preparation side of varnish
Method.
Comparative example 1
A kind of body of a motor car special coating, including priming paint, finish paint and varnish；
The priming paint includes the raw material of following parts by weight, as shown in table 4：
The base paint formulation of table 4
| Name of material | Model | Supplier | Parts by weight | |
| 1 | Polyester resin | B151 | Spring breeze | 35 |
| 2 | Acrylic resin | C1703 | Dan Dilai | 12.7 |
| 3 | Amino resins | B021B | Spring breeze | 12 |
| 4 | Closure isocyanates | ESI3075 | Dan Dilai | 3 |
| 5 | SCA resins | 4694 | ALLIO | 2 |
| 6 | Levelling agent | NTE-100A | Dan Dilai | 0.2 |
| 7 | Titanium dioxide | CR828 | Ke Meiji | 18 |
| 8 | Bentonite | BENTONE28 | Hamming this | 0.1 |
| 9 | Barium sulfate | 2 | ||
| 10 | Propylene glycol methyl ether acetate | It is domestic | It is domestic | 2 |
| 11 | Toluene | It is domestic | It is domestic | 5 |
| 12 | Trimethylbenzene | It is domestic | It is domestic | 8 |
The preparation method of the priming paint, comprises the following steps：
(1) 35 weight of polyester resins are stirred under the conditions of 300-700 revs/min, 18 weights is added under agitation
Part titanium dioxide, 2 parts sulfuric acid barium, 0.1 parts by weight of bentonite are measured, after adding, is stirred under the conditions of 700-1200 revs/min
10min, then, is ground to fineness less than 10 microns；
(2) raw material after step (1) is ground is stirred under the conditions of 300-700 revs/min, is added under agitation
12.7 parts of acrylic resins, 12 parts of amino resins, 2 parts of SCA resins, 3 parts of sealed type isocyanates, 5 parts of toluene, 8 parts of trimethylbenzenes,
2 parts of propylene glycol methyl ether acetates and 0.2 part of levelling agent, adjust thickening degree to 60-70S (25 DEG C, NK-2), bottom is made in the filtering of 200 mesh
Paint.
The finish paint includes the raw material of following parts by weight, as shown in table 5：
The topcoat formulation of table 5
| Name of material | Model | Supplier | Parts by weight | |
| 1 | Polyester resin | B151 | Spring breeze | 30 |
| 2 | Acrylic resin | UAR-201-75F2 | Excellent section | 8 |
| 3 | Amino resins | 058P | Excellent section | 12.6 |
| 4 | Celluosic resin | 381-0.5 (20%) | Yi Shiman | 2 |
| 5 | SCA resins | 4694 | ALLIO | 1.5 |
| 6 | Sealed type isocyanates | ESI3075 | Dan Dilai | 2.5 |
| 7 | Titanium dioxide | R-919 | Shandong Down | 20 |
| 8 | Bentonite | BENTONE28 | Hamming this | 0.1 |
| 9 | Hindered amine | TINUVIN 292 | BASF | 1 |
| 10 | Conductive agent | ES-80 | BYK | 0.2 |
| 11 | Levelling agent | NTE-100A | Dan Dilai | 0.3 |
| 12 | Propylene glycol methyl ether acetate | It is domestic | It is domestic | 5 |
| 13 | Butyl acetate | It is domestic | It is domestic | 10 |
| 14 | Trimethylbenzene | It is domestic | It is domestic | 10 |
The preparation method of the finish paint comprises the following steps：
(1) 30 weight of polyester resins are stirred under the conditions of 300-700 revs/min, 20 weights is added under agitation
Part titanium dioxide, 0.1 parts by weight of bentonite are measured, after adding, 10min is stirred under the conditions of 700-1200 revs/min, then, is ground to
Fineness is less than 10 microns；
(2) raw material after step (1) is ground is stirred under the conditions of 300-700 revs/min, and 8 are added under agitation
Part acrylic resin, 12.6 parts of amino resins, 1.5 parts of SCA resins, 2.5 parts of sealed type isocyanates, 10 parts of trimethylbenzenes, 2 parts of fibres
The plain resin of dimension, 5 parts of propylene glycol methyl ether acetates, 1 part of hindered amine, 0.2 part of conductive agent, 0.3 part of levelling agent, 10 parts of butyl acetates,
Adjust thickening degree to 60-70S (25 DEG C, NK-2), finish paint is made in the filtering of 200 mesh.
The varnish includes the raw material of following parts by weight, as shown in table 6：
The lacquer formulation of table 6
| Name of material | Model | Supplier | Parts by weight | |
| 1 | Thermosetting acrylic resin | 1766 | Niu Peisi | 60 |
| 2 | Amino resins | YH8372 | Dan Dilai | 13.1 |
| 3 | SCA resins | 9641 | ALLIO | 8 |
| 4 | Closure isocyanates | K60X | Bayer | 5.5 |
| 5 | Conductive agent | ES80 | BYK | 0.3 |
| 6 | Drier | LIT-18 | Dan Dilai | 0.2 |
| 7 | UV absorbers | TINUVIN 1130 | BASF | 1 |
| 8 | UV absorbers | TINUVIN 292 | BASF | 1 |
| 9 | Levelling agent | BYK-390 | BYK | 0.3 |
| 11 | Levelling agent | BYK-315N | BYK | 0.3 |
| 12 | Durene | It is domestic | It is domestic | 2 |
| 13 | Propylene glycol methyl ether acetate | It is domestic | It is domestic | 2 |
| 14 | Trimethylbenzene | It is domestic | It is domestic | 5 |
| 15 | DBE solvents | It is domestic | It is domestic | 1 |
The preparation technology of the varnish comprises the following steps：
(1) by 60 parts by weight thermosetting acrylic resins, 13.1 parts by weight amino resins, 8 parts by weight SCA resins and 5.5
Parts by weight blocked isocyanate stirs 10min at 300-700 revs/min, obtains compound A；
(2) trimethylbenzene of 5 parts by weight is stirred under the conditions of 300-700 revs/min, 0.3 part is added under agitation
Conductive agent, 0.2 part of drier, the UV absorbers of 1 parts by weight TINUVIN 1130 and the ultraviolet lights of 1 parts by weight TINUVIN 292
Absorbent, stirs 15min, obtains mixed material B；
(3) B is added in A, under 300-700 revs/min of stirring condition, adds 0.3 parts by weight levelling agent BYK-390
With 0.3 parts by weight levelling agent BYK-315N, 15min is stirred；
(4) continue under 300-700 revs/min of stirring condition, add 2 parts by weight durenes, 2 parts by weight of propylene glycol methyl ethers
Acetate, 1 parts by weight DBE solvents, tune thickening degree to 80-100S (25 DEG C, NK-2), the filtering of 300 mesh, obtain varnish.
Comparative example 2
A kind of body of a motor car special coating, including priming paint, finish paint and varnish；
The priming paint includes the raw material of following parts by weight, as shown in table 7：
The base paint formulation of table 7
| Name of material | Model | Supplier | Parts by weight | |
| 1 | Polyester resin | 173 | Niu Peisi | 35 |
| 2 | Acrylic resin | C1703 | Dan Dilai | 10 |
| 3 | Amino resins | YH8372 | Dan Dilai | 10 |
| 4 | Closure isocyanates | ESI3075 | Dan Dilai | 3 |
| 5 | SCA resins | 4694 | ALLIO | 2 |
| 6 | Levelling agent | NTE-100A | Dan Dilai | 0.2 |
| 7 | Titanium dioxide | R-919 | Shandong Down | 15 |
| 8 | Bentonite | BENTONE28 | Hamming this | 0.1 |
| 9 | Barium sulfate | 2 | ||
| 10 | Propylene glycol methyl ether acetate | It is domestic | It is domestic | 2.7 |
| 11 | Durene | It is domestic | It is domestic | 8 |
| 12 | Trimethylbenzene | It is domestic | It is domestic | 12 |
The preparation method of the priming paint, comprises the following steps：
(1) 35 weight of polyester resins are stirred under the conditions of 300-700 revs/min, 15 weights is added under agitation
Part titanium dioxide, 2 parts sulfuric acid barium, 0.1 parts by weight of bentonite are measured, after adding, is stirred under the conditions of 700-1200 revs/min
10min, then, is ground to fineness less than 10 microns；
(2) raw material after step (1) is ground is stirred under the conditions of 300-700 revs/min, and 10 are added under agitation
Part acrylic resin, 10 parts of amino resins, 2 parts of SCA resins, 3 parts of sealed type isocyanates, 8 parts of durenes, 12 parts of trimethylbenzenes,
2.7 parts of propylene glycol methyl ether acetates and 0.2 part of levelling agent, adjust thickening degree to 60-70S (25 DEG C, NK-2), the filtering of 200 mesh is made
Priming paint.
The finish paint includes the raw material of following parts by weight, as shown in table 8：
The topcoat formulation of table 8
The preparation method of the finish paint comprises the following steps：
(1) 30 weight of polyester resins are stirred under the conditions of 300-700 revs/min, 16 weights is added under agitation
Part titanium dioxide, 0.1 parts by weight of bentonite are measured, after adding, 10min is stirred under the conditions of 700-1200 revs/min, then, is ground to
Fineness is less than 10 microns；
(2) raw material after step (1) is ground is stirred under the conditions of 300-700 revs/min, and 5 are added under agitation
Part acrylic resin, 12 parts of amino resins, 2 parts of SCA resins, 3 parts of sealed type isocyanates, 11.3 parts of trimethylbenzenes, 2 parts of celluloses
Resin, 5 parts of propylene glycol methyl ether acetates, 1 part of hindered amine, 0.2 part of conductive agent, 0.4 part of levelling agent, 12 parts of butyl acetates, adjust and increase
Finish paint is made in viscosity to 60-70S (25 DEG C, NK-2), the filtering of 200 mesh.
The varnish includes the raw material of following parts by weight, as shown in table 9：
The lacquer formulation of table 9
| Name of material | Model | Supplier | Parts by weight | |
| 1 | Thermosetting acrylic resin | 8530 | Same moral | 50 |
| 2 | Amino resins | 058 | Excellent section | 10 |
| 3 | SCA resins | 9641 | ALLIO | 12 |
| 4 | Closure isocyanates | ESI3075 | Dan Dilai | 10 |
| 5 | Conductive agent | ES80 | BYK | 0.2 |
| 6 | Drier | LIT-18 | Dan Dilai | 0.2 |
| 7 | UV absorbers | TINUVIN 1130 | BASF | 1 |
| 8 | UV absorbers | TINUVIN 292 | BASF | 1 |
| 9 | Levelling agent | BYK-390 | BYK | 0.3 |
| 10 | Levelling agent | BYK-315N | BYK | 0.2 |
| 11 | Durene | It is domestic | It is domestic | 3 |
| 12 | Propylene glycol methyl ether acetate | It is domestic | It is domestic | 3 |
| 13 | Toluene | It is domestic | It is domestic | 7.3 |
| 14 | DBE solvents | It is domestic | It is domestic | 1.5 |
The preparation technology of the varnish comprises the following steps：
(1) by 50 parts by weight thermosetting acrylic resins, 10 parts by weight amino resins, 12 parts by weight SCA resins and 10 weights
Measure part blocked isocyanate and stir 10min at 300-700 revs/min, obtain compound A；
(2) toluene of 7.3 parts by weight is stirred under the conditions of 300-700 revs/min, 0.2 part is added under agitation
Conductive agent, 0.2 part of drier, the UV absorbers of 1 parts by weight TINUVIN 1130 and the ultraviolet lights of 1 parts by weight TINUVIN 292
Absorb, stir 15min, obtain mixed material B；
(3) B is added in A, under 300-700 revs/min of stirring condition, adds 0.3 parts by weight levelling agent BYK-390
With 0.2 parts by weight levelling agent BYK-315N, 15min is stirred；
(4) continue under 300-700 revs/min of stirring condition, add 3 parts by weight 150#, 3 parts by weight of propylene glycol methyl ether vinegar
Acid esters, 1.5 parts by weight DBE solvents, tune thickening degree to 80-100S (25 DEG C, NK-2), 300 mesh are filtered, and obtain varnish.
Embodiment 4
Priming paint, finish paint, the application method of varnish in body of a motor car special coating
Priming paint, finish paint, varnish difference in the body of a motor car special coating that embodiment 1-3, comparative example 1-2 are prepared
After diluent allotment, body of a motor car electrophoresis workpieces are sprayed at, specific method is：
The priming paint that each embodiment is obtained is with priming paint diluent by 10:4 allotments to viscosity is 11.0-13.0S (25 DEG C, NK-
2)；Electrophoresis workpieces surface is sprayed at, after normal temperature levelling is dried 8-10 minutes, next step top coat layer spraying is carried out；
The finish paint that each embodiment is obtained is with finish paint diluent by 10:4 allotments to viscosity is 12.0-14.0S (25 DEG C, NK-
2)；It is sprayed on the prime coat of surface drying, after normal temperature levelling is dried 8-10 minutes, carries out next step layer of varnish spraying；
The varnish that each embodiment is obtained is with varnish thinner by 10:2 allotments to viscosity is 26.0-32.0S (25 DEG C, NK-
2)；It is sprayed on the top coat layer of surface drying, after normal temperature levelling is dried 8-10 minutes, 140 DEG C/min is dried 30 minutes, forms paint film
Coating system, is then detected to paint film property, and its result is as shown in table 10.
The priming paint diluent and finish paint diluent include the raw material of following parts by weight：
The dimethylbenzene is that Bayer is domestic；
The trimethylbenzene is that Bayer is domestic；
The propylene glycol methyl ether acetate is that Bayer is domestic；
The butyl acetate is that Bayer is domestic.
The preparation method of the middle lacquer diluent and colored paint diluent is as follows：
In a reservoir by the xylene solvent of parts by weight 45, the trimethylbenzene of parts by weight 23, weight 12 propylene glycol monomethyl ether vinegar
Acid esters and the butyl acetate solvent of parts by weight 20 were mixed evenly after 10 minutes, obtained middle lacquer diluent and colored paint diluent.
The varnish thinner includes the raw material of following parts by weight：
70 parts of durene；
30 parts of trimethylbenzene；
The durene is domestic；
The trimethylbenzene is domestic.
The varnish thinner preparation method is：The durene of parts by weight 70 and the front three of parts by weight 30 are added in a reservoir
Benzene was mixed evenly after 10 minutes, obtained finish paint diluent.
The paint film property test result of table 10
Each performance detection standard is as follows：
1. it is adapted to the performance of spraying
Good dispersion when priming paint, finish paint, varnish spraying, levelability is moderate, and thixotropy is good, coating uniform, without obvious tangerine peel,
Without pinprick bubble, free from admixture point is present.
2. it is adapted to the performance of solidification drying；
140 DEG C ± 10 DEG C of baking temperature (coating is away from top 100mm spatial dimensions air themperature), is toasted 30 minutes；Through solid
Coating is up to crosslinking is fully cured after change, and solvent noresidue is not after-tacked.Coating should test the above-mentioned bar of drying baker temperature reference without discoloration
Part.(vehicle body baking vanish is all high-temperature baking, this technique using newest 3C1B techniques and in prime after spraying surface drying i.e. spray-coating surface
It is progress heated baking solidification after lacquer varnish, varnish spraying surface drying after paint, finish paint spraying surface drying)
3. hardness
1H Mitsubishis pencil.
4. adhesive force
Hundred lattice methods of testing should be without chipping obscission, and coating grid is interior without obscission.Oil-free varnish stain on 3M adhesive tapes.
5. gloss
It is required that measurement of luster value >=96 (60 °)
6. it is resistance to soaked：
By sample periphery gummed paper edge sealing, it is positioned in 40 DEG C ± 2 DEG C neutral hot water storgaes, is taken out after soaked 10 days, recover 2
Tested after hour, painting layer face should be without expansion, blister, and without coming off, no loss of gloss phenomenon, adhesive force tests≤0 grade.
7. alkali resistance (25 DEG C × 24h)
0.1mol/L NaoH, (23 ± 2) DEG C × 24h, composite plate paint film is without significant change, aberration △ E≤1 (45° angle).
Without obvious loss of gloss, bubble, expand, come off；
8. resistance to gasoline：Resistance to gasoline：
24h, paint film appearance corrugationless, substantially soften, bubble, come off, aberration and cosmetic variation.Naturally dry 24h and survey attached
Put forth effort 0 grade or 1 grade, hardness >=HB.Soaking at room temperature flawless, foaming, peeling, discoloration etc. change；Slight paint film is allowed to soften
9. resistance to artificial accelerated aging：
Ultraviolet aging, 2000h, △ E≤3.0；Gloss >=85 (60 °) paint film is without cracking, powder of detached etc.；Outward appearance without
Open defect；Adhesive force：0 grade or 1 grade.
Priming paint, finish paint and varnish obtained by various embodiments of the present invention are met the following requirements：
1. system and environmental requirement
Priming paint, finish paint, varnish are high temperature baking vanish.Environmentally friendly numerical value meets European Union's household electrical appliance harmful substance limitation standard.
2. outward appearance
Must free from dust, particle, impurity in 2.1 containers；
2.2 colors are consistent with mark color designation, model in packaging；
2.3 coating mobility will get well, it is impossible to join into skin shape or solidification glue is drawn.
3. Storage period
Under normal temperature, the coating shelf-life is not opened more than or equal to 12 months, and the shelf-life is more than or equal to 6 months after unlatching.
The above-mentioned detailed description carried out with reference to embodiment to body of a motor car special coating and its preparation method and application, is to say
It is bright property rather than limited, several embodiments can be included according to limited scope, therefore it is of the invention total not departing from
Changing and modifications under body design, should belong within protection scope of the present invention.
Claims (10)
1. a kind of body of a motor car special coating, it is characterised in that the coating includes priming paint, finish paint, varnish, the priming paint includes
The raw material of following parts by weight：
2. coating according to claim 1, it is characterised in that the finish paint includes the raw material of following parts by weight：
3. coating according to claim 1 or 2, it is characterised in that the varnish includes the raw material of following parts by weight：
4. coating according to claim 3, it is characterised in that the levelling agent in the lacquer formulation is by BYK-315N type streams
Flat agent, BYK-390 types levelling agent press 1:1 composition.
5. coating according to claim 3, it is characterised in that the UV absorbers by 1~1.5 parts by weight BASF
The type UV absorbers of TINUVIN 1130 and the type UV absorbers of the BASF TINUVIN of 1~1.5 parts by weight 292 composition.
6. the preparation method of the body of a motor car special coating according to claim 1-5 any one, it is characterised in that：It is described
The preparation method of priming paint is：
(1) 30-35 weight of polyester resins are stirred under the conditions of 300-700 revs/min, 15-20 is added under agitation
Parts by weight titanium dioxide, 1-2 parts sulfuric acids barium, 0.1-0.3 parts by weight of bentonite, after adding, under the conditions of 700-1200 revs/min
10min is stirred, then, fineness is ground to less than 10 microns；
(2) raw material for obtaining step (1) is stirred under the conditions of 300-700 revs/min, and 10-15 parts are added under agitation
Acrylic resin, 8-12 part amino resins, 1-2 parts of SCA resins, 1-3 parts of sealed type isocyanates, 5-12 parts of toluene, 2-8 parts three
Toluene, 1-5 part propylene glycol methyl ether acetate and 0.2-0.4 parts of levelling agents, adjust thickening degree to 60-70S (25 DEG C, NK-2), 200 mesh
Filtering, is made priming paint.
7. preparation method according to claim 6, it is characterised in that the preparation method of the finish paint is：
(1) 25-30 weight of polyester resins are stirred under the conditions of 300-700 revs/min, 15-20 is added under agitation
Parts by weight titanium dioxide, 0.1-0.3 parts by weight of bentonite, after adding, stir 10min under the conditions of 700-1200 revs/min, then,
Fineness is ground to less than 10 microns；
(2) raw material for obtaining step (2) is stirred under the conditions of 300-700 revs/min, and 5-10 parts third are added under agitation
Olefin(e) acid resin, 10-15 part amino resins, 1-2 parts of SCA resins, 1-3 parts of sealed type isocyanates, 4-12 parts of dimethylbenzene, 1-2 parts
Celluosic resin, 1-2 part propylene glycol methyl ether acetate, 1-2 hindered amines, 0.2-0.4 parts of conductive agents, 0.2-0.4 parts of levelling agents and
5-12 parts of butyl acetates, adjust thickening degree to 60-70S (25 DEG C, NK-2), finish paint is made in the filtering of 200 mesh.
8. preparation method according to claim 6, it is characterised in that the preparation method of the varnish is：
(1) by 50-70 parts by weight thermosetting acrylic resin, 12-18 parts by weight amino resins, 8-12 parts by weight SCA resins and
5-10 parts by weight blocked isocyanate stirs 10min at 300-700 revs/min, obtains compound A；
(2) toluene of 5-10 parts by weight is stirred under the conditions of 300-700 revs/min, 0.2-0.4 parts is added under agitation
Conductive agent, 0.2-0.4 part drier, the UV absorbers of 1-1.5 parts by weight TINUVIN 1130 and 1-1.5 parts by weight
The UV absorbers of TINUVIN 292, stir 15min, obtain mixed material B；
(3) B is added in A, under 300-700 revs/min of stirring condition, adds 0.5-1 parts by weight levelling agents, wherein BYK-
The weight ratio of 390 type levelling agents and BYK-315N type levelling agents is 1:1, stir 15min；
(4) continue under 300-700 revs/min of stirring condition, add 2-5 parts by weight 150#, 2-5 parts by weight of propylene glycol methyl ether vinegar
Acid esters, 1-2 parts by weight DBE, tune thickening degree to 80-100S (25 DEG C, NK-2), the filtering of 300 mesh, obtain varnish.
9. the paint film coating system of the body of a motor car special coating formation according to claim 1-5 any one, its feature
It is：Described middle paint and middle lacquer diluent are pressed 10:4 allotments；Colored paint presses 10 with colored paint diluent:4 allotments；Varnish and varnish
Diluent presses 10:2 allotments；Then the middle paint after allotment, colored paint, varnish are sprayed at electrophoresis workpieces surface successively, form paint film
Coating system.
10. application of the body of a motor car special coating in body of a motor car processing according to claim 1-5 any one.
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| Publication number | Priority date | Publication date | Assignee | Title |
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| CN108912988A (en) * | 2017-08-30 | 2018-11-30 | 山东科耀化工有限公司 | High solid low viscosity Hydroxylated acrylic resin, preparation method and vehicle baking finish |
| CN108976892A (en) * | 2018-06-27 | 2018-12-11 | 常州光辉化工有限公司 | A kind of surface modifier in automobile bloom finishing coat |
| CN109401378A (en) * | 2018-10-10 | 2019-03-01 | 江苏熙成新材料科技有限公司 | A kind of base paint formulation with high adhesion force |
| CN109456662A (en) * | 2018-08-23 | 2019-03-12 | 太仓怡泰霖智能科技有限公司 | A kind of aqueous priming paint and preparation method thereof for body of a motor car |
| CN110669399A (en) * | 2019-11-05 | 2020-01-10 | 广州立邦涂料有限公司 | Sealing rubber strip yellowing resistant varnish for automobile and preparation method and application thereof |
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| CN102414283A (en) * | 2009-04-21 | 2012-04-11 | 巴斯夫涂料有限公司 | Water-free high-solids base paints, production thereof and use thereof for producing multilayer paint coatings, and multilayer paint coatings comprising a base coating made of water-free high-solids base paint |
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| CN102010648A (en) * | 2010-11-29 | 2011-04-13 | 常州市武进晨光金属涂料有限公司 | Floating coat-free shining base coat used for metal pieces and preparation method thereof |
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| CN108912988A (en) * | 2017-08-30 | 2018-11-30 | 山东科耀化工有限公司 | High solid low viscosity Hydroxylated acrylic resin, preparation method and vehicle baking finish |
| CN108976892A (en) * | 2018-06-27 | 2018-12-11 | 常州光辉化工有限公司 | A kind of surface modifier in automobile bloom finishing coat |
| CN109456662A (en) * | 2018-08-23 | 2019-03-12 | 太仓怡泰霖智能科技有限公司 | A kind of aqueous priming paint and preparation method thereof for body of a motor car |
| CN109401378A (en) * | 2018-10-10 | 2019-03-01 | 江苏熙成新材料科技有限公司 | A kind of base paint formulation with high adhesion force |
| CN110669399A (en) * | 2019-11-05 | 2020-01-10 | 广州立邦涂料有限公司 | Sealing rubber strip yellowing resistant varnish for automobile and preparation method and application thereof |
| CN110922847A (en) * | 2019-12-04 | 2020-03-27 | 重庆华辉涂料有限公司 | High-saturation red metallic paint, and preparation method and spraying method thereof |
| CN110922847B (en) * | 2019-12-04 | 2021-09-10 | 重庆华辉涂料有限公司 | High-saturation red metallic paint, and preparation method and spraying method thereof |
| CN112708317A (en) * | 2021-01-15 | 2021-04-27 | 江阴市荣新塑化有限公司 | High-wear-resistance weather-resistant finish paint for spraying automobile aluminum material and preparation method thereof |
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