CN107057547A - A kind of acroleic acid polyurethane type coating varnish composition, preparation method and its usage - Google Patents
A kind of acroleic acid polyurethane type coating varnish composition, preparation method and its usage Download PDFInfo
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- CN107057547A CN107057547A CN201710337408.1A CN201710337408A CN107057547A CN 107057547 A CN107057547 A CN 107057547A CN 201710337408 A CN201710337408 A CN 201710337408A CN 107057547 A CN107057547 A CN 107057547A
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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
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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 discloses a kind of acroleic acid polyurethane type coating varnish composition, include the component of following parts by weight：Component A includes the component of following parts by weight：Acrylic resin modified 10 30 parts of 10 20 parts of 5 15 parts of 20 40 parts of thermosetting Hydroxylated acrylic resin, polyester resin, crosslinking agent, two carbamide compounds, 1.61 5.7 parts of varnish auxiliary agent, 5 30 parts of the first diluent of high solid；Component B includes the component of following parts by weight：50 80 parts of isocyanate resin, 20 50 parts of the second diluent；The component A and component B mass ratio is 100:(28~32).Acroleic acid polyurethane type coating varnish composition prepared by the present invention, it is constructed admittedly containing height, and construction sagging limit is high, with high marresistance, automobile external coating is particularly suitable for use in, while being also applied for the external coating of automotive hub, motorcycle, engineering machinery, light industrial products etc..
Description
Technical field
Combined the invention belongs to technical field of coatings, more particularly to a kind of automobile with acrylic acid-polyurethane type coating varnish
Thing, preparation method and its usage.
Background technology
Since 2009, Chinese automobile volume of production and marketing persistently keeps the first in the world.The band during automobile production and use
The environmental problem come increasingly becomes the focus of social concerns.It was found that VOCs discharges are that compound air is dirty in auto industry
The important factor in forming process is contaminated, volatile organic matter (VOCs) discharge of coating turns into the weight of national air contaminant treatment
Weight.The Ministry of Finance in 2015, State Tax Administration's issue from 1 day 2 months for Construction State under volatile organic matter (VOCs)
The coating that content is more than 420g/L imposes 4% consumption tax.In addition, country was formally discharged into VOCs from 1 day October in 2015
Row charge.
In view of this so that covered in the urgent need to developing a kind of excellent automobile of environmentally friendly, appearance property this area
Light varnish is, it is necessary to reach that volatile organic matter under Construction State (VOCs) is less than 420g/L, high sagging limit, high marresistance
It is required that.
The content of the invention
It is an object of the present invention to provide a kind of acrylic acid-polyurethane type coating varnish composition, under its Construction State
Volatile organic matter (VOCs) is less than 420g/L, can reach high marresistance, the requirement of high sagging limit.
It is a further object to provide a kind of preparation side of the acrylic acid-polyurethane type coating varnish composition
Method.
It is also another object of the present invention to provide a kind of purposes of the acrylic acid-polyurethane type coating varnish composition.
To achieve these goals, the technical solution adopted by the present invention is as follows：
One aspect of the present invention provides a kind of acrylic acid-polyurethane type coating varnish composition, including following weight
The component of part：
Component A includes the component of following parts by weight：
Component B includes the component of following parts by weight：
50-80 parts of isocyanate resin,
Second 20-50 parts of diluent；
The component A and component B mass ratio is 100:(28~32).
The thermosetting Hydroxylated acrylic resin of the high solid is that number-average molecular weight is 3000-5000, and hydroxyl value is 120
~200mgKOH/g, hydroxyl value is preferably 150-180mgKOH/g, and hard resin acid number is 7.0-11.0mgKOH/g, the Gao Gu
Body part refers to the weight % of solid part >=75.
The polyester resin is the polyester resin of higher collateralization, with relatively low viscosity, specially Niu Peisi SETAL
1606 BA-80, enlightening height win at least one of wound SILIKOTOP E 900, BB600.
The crosslinking agent can provide extra auxiliary crosslinked action, film is had firmer stiff chain structure, specifically
For butylated amino resin, selected from Niu Peisi amino resins SETAMINE US-146 BB-72, SETAMINE US-138 BB-
70th, at least one of Niu Peisi LUWIPAL 018.
During two carbamide compound is acrylic resin modified two carbamide compounds refer to aliphatic diisocyanate and amine reaction
Compound, two acrylic resin modified carbamide compound modification amounts of two carbamide compound are 3.2-4.2%, specially Niu Peisi
SETALUX 91757 VX-60、SETALUX 91760 SS-53、SETALUX 91767 VX-60、SETALUX 91780 VS-
60th, at least one of SS-69 of SETALUX 91796.
The varnish auxiliary agent includes the component of following parts by weight：
The UV absorbers be benzotriazole UV absorbers, specially BASF Tinuvin 928,
At least one of Tinuvin384-2, Tinuvin400, Tinuvin477.
The light stabilizer is steric hindrance amine light stabilizer, in specially BASF Tinuvin292, Tinuvin123
It is at least one.
The organosilicon levelling agent is polyester modification dimethyl silicone polymer class levelling agent, coordinates with other components and reaches drop
The optimum balance effect of low surface tension, raising slipping and other performances, specially Bi Ke BYK-331, BYK-315, BYK-
306th, at least one of the high Tego-450 of BYK-310, enlightening, Bayer BAYSILONE OL-17.
The esters of acrylic acid levelling agent be non-reacted acrylate levelling agent, with organosilicon levelling agent act synergistically with
Reach at least one in optimal appearance, the specially high TegoFlow-300 of Bi Ke BYK-358N, enlightening, cyanogen spy Modaflow-2100
Kind.
First diluent is specially butyl acetate, ethyl acetate, 2-Butoxyethyl acetate, propylene glycol monomethyl ether acetic acid
At least one of ester, mixed dibasic acid dibasic ester (DBE), 3- ethoxyl ethyl propionates (EEP).
The isocyanate resin is hexamethylene diisocyanate trimer, specially Bayer Desmodur 3300, bar
This husband Basonat HI-100, sieve ground at least one of Asia TOLONATE HI 290B.
Second diluent is specially butyl acetate, ethyl acetate, 2-Butoxyethyl acetate, propylene glycol monomethyl ether acetic acid
At least one of ester, mixed dibasic acid dibasic ester (DBE), 3- ethoxyl ethyl propionates (EEP).
Another aspect of the present invention provides a kind of preparation side of the acrylic acid-polyurethane type coating varnish composition
Method, comprises the following steps：
Component A preparation：
Under nitrogen protection, 20-40 parts of thermosetting Hydroxylated acrylic resin, the polyester resin 5-15 of high solid are added
Part, 10-20 parts of crosslinking agent, acrylic resin modified 10-30 parts two carbamide compounds, 1.61-5.7 parts of varnish auxiliary agent, the first dilution
5-30 parts of agent, component A described in stirring to obtain；
Component B preparation：
Under nitrogen protection, 20-50 parts of 50-80 parts of isocyanate resin and the second diluent are added, described in stirring to obtain
Component B；
By component A and component B in mass ratio 100:The ratio mixing of (28~32), obtains the acrylic acid-polyurethane type
Coating varnish composition.
Another aspect of the invention, which provides a kind of acrylic acid-polyurethane type coating varnish composition, to be used to prepare
The purposes of coating.
By adopting the above-described technical solution, the present invention has advantages below and beneficial effect：
The acrylic acid-polyurethane type coating varnish composition of the present invention, it constructs solid containing high (organic solvent volatile matter<
420g/L), construction sagging limit is high (reaching more than 55 μm), with high marresistance, is particularly suitable for use in automobile external coating, together
When be also applied for the external coatings of automotive hub, motorcycle, engineering machinery, light industrial products etc..
The acrylic acid-polyurethane type coating varnish composition of the present invention, can apply in automobile external coating, coat
The film richness that arrives is good, clarity is high, marresistance good, is particularly suitable for use in automobile external coating, while being also applied for automobile
The external coating of wheel hub, motorcycle, engineering machinery, light industrial products etc..
Brief description of the drawings
Fig. 1 is the schematic diagram of the acrylic acid-polyurethane type coating varnish composition coating flowing hanging evaluation method of the present invention.
Embodiment
In order to illustrate more clearly of the present invention, with reference to preferred embodiment, the present invention is described further.Ability
Field technique personnel should be appreciated that following specifically described content is illustrative and be not restrictive, and this should not be limited with this
The protection domain of invention.
In the case of being clear from, being explained to the purpose of the present invention by following examples, the component of the composition
Released bright using parts by weight as the universal standard.In the case of without special instruction, for simplicity, institute in the embodiment of the present invention
" part " stated has identical meaning with parts by weight.
It is described in detail to various aspects of the present invention below, unless specific instructions, various raw materials of the invention can lead to
Cross and be commercially available；Or prepared according to the conventional method of this area.Unless otherwise defined or described herein, it is used in this application
All specialties are identical with meaning known to those skilled in the art with scientific words.In addition it is any with described content phase
Like or impartial method and material all can be applied in the inventive method.
The experimental method of unreceipted actual conditions in the following example, generally according to normal condition, or according to manufacturer
Proposed condition is carried out.Unless otherwise indicated, otherwise all number is parts by weight, and all percentage is weight percent
Than described polymer molecular weight is number-average molecular weight.
" acrylic acid-polyurethane type " refers to that the present invention includes acrylic type resin and isocyanate resin group in the application
Point.
" the thermosetting Hydroxylated acrylic resin of high solid " can be used in the application《Acrylic acid chemical industry and application》
The thermosetting Hydroxylated acrylic resin of high solid described in December the 4th in 2001 is interim.The solid part refers to thermosetting hydroxyl
The solids content of base acrylic resin.
Embodiment 1
Component A includes：
Number-average molecular weight is 4000, and hydroxyl value is 140mgKOH/g, and hard resin acid number is 8.0mgKOH/g high solid
Thermosetting Hydroxylated acrylic resin, high solid refers to the weight % (being more than or equal to 75% weight) of solid part >=75,
Component B includes：
3,300 70 parts of isocyanate resin Desmodur；
Diluent butyl acetate, 30 parts；
Component A preparation method：
Under nitrogen protection, the thermosetting Hydroxylated acrylic resins of 20 parts of high solids, 5 parts of polyester trees are added in a reservoir
The BA-80 of fat SETAL 1606,10 parts of butylated amino resin SETAMINE US-146 BB-72,15 part of two carbamide compound are modified
The VX-60 of Eudragit S ETALUX 91757,1 part of benzotriazole UV absorbers Tinuvin 928,0.5
Part steric hindrance amine light stabilizer Tinuvin292,0.1 part of polyester modification dimethyl silicone polymer class levelling agent BYK-331,0.5 part
Esters of acrylic acid levelling agent BYK-358N and 10 parts of diluent butyl acetates, 30min is stirred using mixer, obtains the component
A。
Component B preparation method：
Under nitrogen protection, add and 70 parts of isocyanate resins are added under 30 parts of diluent butyl acetates, stirring
Desmodur 3300, is stirred for 10min, obtains the component B.
Prepare the acrylic acid-polyurethane type coating varnish composition：By component A and component B by weight 100：30
Ratio is mixed, and obtains the acrylic acid-polyurethane type coating varnish composition, and the mixture AB need to be used in 30 minutes
It is complete.The acrylic acid-polyurethane type coating varnish composition is two-component high solid clear coat composition.
Using the steel plate after phosphatization electrophoresis, electrophoretic coating thickness is 20 ± 3 μm；(thickness 30-40 μ are applied in spray car
m)；Aqueous finish paint (15-20 μm of thickness) is sprayed, dodges and does after 4 minutes (min), into after 80 DEG C of baking oven baking 5min, then institute is sprayed
State and 140 DEG C of insulations of baking oven are put into after acrylic acid-polyurethane type coating varnish composition (40-50 μm of thickness), levelling 7min
30min.Spraying method can use electrostatic rotating cup spraying, and manual air gun can also be selected to spray.
Purposes：The acrylic acid-polyurethane type coating varnish composition of the present embodiment, can be applied in automobile external coating
In, coat that obtained film richness is good, clarity is high, marresistance good, is particularly suitable for use in automobile external coating, while also fitting
External coating for automotive hub, motorcycle, engineering machinery, light industrial products etc..
Comparative example 1
Other material be the same as Examples 1 are formulated, difference is, the thermosetting Hydroxylated acrylic resin of high solid is in component
120mgKOH/g (solid part >=75%, molecular weight 3000-5000), parts by weight are 20 parts；
Component A preparation method：
Under nitrogen protection, the thermosetting Hydroxylated acrylic resins of 20 parts of high solids, 5 parts of polyester trees are added in a reservoir
The BA-80 of fat SETAL 1606,10 parts of butylated amino resin SETAMINE US-146 BB-72,15 part of two carbamide compound are modified
The VX-60 of Eudragit S ETALUX 91757,1 part of benzotriazole UV absorbers Tinuvin 928,0.5
Part steric hindrance amine light stabilizer Tinuvin292,0.1 part of polyester modification dimethyl silicone polymer class levelling agent BYK-331,0.5 part
Esters of acrylic acid levelling agent BYK-358N and 10 parts of diluent butyl acetates, 30min is stirred using mixer, obtains the component
A。
Component B preparation method：
Under nitrogen protection, add and 70 parts of isocyanate resins are added under 30 parts of diluent butyl acetates, stirring
Desmodur 3300, is stirred for 10min, obtains the component B.
Prepare：By component A and component B by weight 100:30 ratio mixing, obtains the acrylic acid-polyurethane type cover
Light clear coat composition, the mixture AB need to have been used in 30 minutes.
Using the steel plate after phosphatization electrophoresis, electrophoretic coating thickness is 20 ± 3 μm；(thickness 30-40 μ are applied in spray car
m)；Aqueous finish paint (15-20 μm of thickness) is sprayed, is dodged after dry 4min, into after 80 DEG C of baking oven baking 5min, then the Gao Gu is sprayed
Body part acrylic acid-polyurethane type coating varnish composition (40-50 μm of thickness)), 140 DEG C of insulations of baking oven are put into after levelling 7min
30min.Spraying method can use electrostatic rotating cup spraying, and manual air gun can also be selected to spray.
Comparative example 2
It is formulated that other materials are same as Example 1, difference is, eliminates component butylated amino resin.
Component A preparation method：
Under nitrogen protection, the thermosetting Hydroxylated acrylic resins of 20 parts of high solids, 5 parts of polyester trees are added in a reservoir
The VX-60 of Eudragit S ETALUX 91757,1 part of benzene that the BA-80 of fat SETAL 1606,15 part of two carbamide compound are modified
And triazole UV absorbers Tinuvin 928,0.5 part of steric hindrance amine light stabilizer Tinuvin292,0.1 part of polyester change
Property dimethyl silicone polymer class levelling agent BYK-331,0.5 part of esters of acrylic acid levelling agent BYK-358N and 10 parts of diluent acetic acid
Butyl ester, 30min is stirred using mixer, obtains the component A.
Component B preparation method：
Under nitrogen protection, add and 70 parts of isocyanate resins are added under 30 parts of diluent butyl acetates, stirring
Desmodur 3300, is stirred for 10min, obtains the component B.
Prepare：By component A and component B by weight 100:30 ratio mixing, obtains the acrylic acid-polyurethane type cover
Light clear coat composition, the mixture AB need to have been used in 30 minutes.
Using the steel plate after phosphatization electrophoresis, electrophoretic coating thickness is 20 ± 3 μm；(thickness 30-40 μ are applied in spray car
m)；Aqueous finish paint (15-20 μm of thickness) is sprayed, is dodged after dry 4min, into after 80 DEG C of baking oven baking 5min, then the Gao Gu is sprayed
Body part acrylic acid-polyurethane type coating varnish composition (40-50 μm of thickness)), 140 DEG C of insulations of baking oven are put into after levelling 7min
30min.Spraying method can use electrostatic rotating cup spraying, and manual air gun can also be selected to spray.
Comparative example 3
It is formulated that other materials are same as Example 1, difference is the polyacrylic resins for eliminating the modification of two carbamide compounds.
Component A preparation method：
Under nitrogen protection, the thermosetting Hydroxylated acrylic resins of 20 parts of high solids, 5 parts of polyester trees are added in a reservoir
The BA-80 of fat SETAL 1606,10 parts of butylated amino resin SETAMINE US-146 BB-72,1 part of benzotriazole purple
Outer light absorber Tinuvin 928,0.5 part of steric hindrance amine light stabilizer Tinuvin292,0.1 part of polyester modification poly dimethyl silicon
Oxygen alkanes levelling agent BYK-331,0.5 part of esters of acrylic acid levelling agent BYK-358N and 10 parts of diluent butyl acetates, using stirring
Machine stirring 30min is mixed, the component A is obtained.
Component B preparation method：
Under nitrogen protection, add and 70 parts of isocyanate resins are added under 30 parts of diluent butyl acetates, stirring
Desmodur 3300, is stirred for 10min, obtains the component B.
Prepare：By component A and component B by weight 100:30 ratio mixing, obtains the acrylic acid-polyurethane type cover
Light clear coat composition, the mixture AB need to have been used in 30 minutes.
Using the steel plate after phosphatization electrophoresis, electrophoretic coating thickness is 20 ± 3 μm；(thickness 30-40 μ are applied in spray car
m)；Aqueous finish paint (15-20 μm of thickness) is sprayed, is dodged after dry 4min, into after 80 DEG C of baking oven baking 5min, then the Gao Gu is sprayed
Body part acrylic acid-polyurethane type coating varnish composition (40-50 μm of thickness)), 140 DEG C of insulations of baking oven are put into after levelling 7min
30min.Spraying method can use electrostatic rotating cup spraying, and manual air gun can also be selected to spray.
Embodiment 2
Component A includes：Number-average molecular weight is 4000, and hydroxyl value is 150mgKOH/g, and hard resin acid number is 8.0mgKOH/g
High solid thermosetting Hydroxylated acrylic resin, high solid refers to that solid part >=75% (is more than or equal to 75% weight
Amount),
Component B includes：
Isocyanate resin Basonat HI-100,60 parts；
Diluent butyl acetate, 30 parts.
Component A preparation method：
Under nitrogen protection, thermosetting Hydroxylated acrylic resin, the 15 parts of polyester of 30 parts of high solids are added in a reservoir
Resin SILIKOTOP E 900,20 parts of butylated amino resin SETAMINE US-138 BB-70,30 part of two carbamide compound change
The SS-53 of Eudragit S ETALUX 91760 of property, 1 part of benzotriazole UV absorbers Tinuvin384-2,
0.5 part of steric hindrance amine light stabilizer Tinuvin123,0.1 part of polyester modification dimethyl silicone polymer class levelling agent BYK-315,
0.5 part of esters of acrylic acid levelling agent TegoFlow-300 and 10 parts of diluent butyl acetates, stir 30min using mixer, obtain
Obtain the component A.
Component B preparation method：
Under nitrogen protection, add and 60 parts of isocyanate resins are added under 30 parts of diluent butyl acetates, stirring
Basonat HI-100, are stirred for 10min, obtain the component B.
Prepare the acrylic acid-polyurethane type coating varnish composition：By component A and component B by weight 100：30
Ratio is mixed, and obtains the acrylic acid-polyurethane type coating varnish composition, and the mixture AB need to be used in 30 minutes
It is complete.The acrylic acid-polyurethane type coating varnish composition is two-component high solid clear coat composition.
Using the steel plate after phosphatization electrophoresis, electrophoretic coating thickness is 20 ± 3 μm；(thickness 30-40 μ are applied in spray car
m)；Aqueous finish paint (15-20 μm of thickness) is sprayed, is dodged after dry 4min, into after 80 DEG C of baking oven baking 5min, then the propylene is sprayed
140 DEG C of insulation 30min of baking oven are put into after acid-polyurethane-type coating varnish composition (40-50 μm of thickness), levelling 7min.Spraying
Mode can use electrostatic rotating cup spraying, and manual air gun can also be selected to spray.
Purposes：The acrylic acid-polyurethane type coating varnish composition of the present embodiment, can be applied in automobile external coating
In, coat that obtained film richness is good, clarity is high, marresistance good, is particularly suitable for use in automobile external coating, while also fitting
External coating for automotive hub, motorcycle, engineering machinery, light industrial products etc..
Embodiment 3
The material of other in component is same as Example 1, and difference is, the thermosetting hydroxy acrylic acid tree of the high solid
Fat is 40 parts.
Component A preparation method：
Under nitrogen protection, the thermosetting Hydroxylated acrylic resins of 40 parts of high solids, 5 parts of polyester trees are added in a reservoir
The BA-80 of fat SETAL 1606,10 parts of butylated amino resin SETAMINE US-146 BB-72,15 part of two carbamide compound are modified
The VX-60 of Eudragit S ETALUX 91757,1 part of benzotriazole UV absorbers Tinuvin 928,0.5
Part steric hindrance amine light stabilizer Tinuvin292,0.1 part of polyester modification dimethyl silicone polymer class levelling agent BYK-331,0.5 part
Esters of acrylic acid levelling agent BYK-358N and 10 parts of diluent butyl acetates, 30min is stirred using mixer, obtains the component
A。
Component B preparation method：
Under nitrogen protection, add and 70 parts of isocyanate resins are added under 30 parts of diluent butyl acetates, stirring
Desmodur 3300, is stirred for 10min, obtains the component B.
Prepare the acrylic acid-polyurethane type coating varnish composition：By component A and component B by weight 100：30
Ratio is mixed, and obtains the acrylic acid-polyurethane type coating varnish composition, and the mixture AB need to be used in 30 minutes
It is complete.The acrylic acid-polyurethane type coating varnish composition is two-component high solid clear coat composition.
Using the steel plate after phosphatization electrophoresis, electrophoretic coating thickness is 20 ± 3 μm；(thickness 30-40 μ are applied in spray car
m)；Aqueous finish paint (15-20 μm of thickness) is sprayed, is dodged after dry 4min, into after 80 DEG C of baking oven baking 5min, then the Gao Gu is sprayed
140 DEG C of insulations of baking oven are put into after body part acrylic acid-polyurethane type coating varnish composition (40-50 μm of thickness), levelling 7min
30min.Spraying method can use electrostatic rotating cup spraying, and manual air gun can also be selected to spray.
Purposes：The acrylic acid-polyurethane type coating varnish composition of the present embodiment, can be applied in automobile external coating
In, coat that obtained film richness is good, clarity is high, marresistance good, is particularly suitable for use in automobile external coating, while also fitting
External coating for automotive hub, motorcycle, engineering machinery, light industrial products etc..
Embodiment 4
The material of other in component is same as Example 1, and difference is, increases diluent consumption in component A to 30 parts.
Component A preparation method：
Under nitrogen protection, the thermosetting Hydroxylated acrylic resins of 20 parts of high solids, 5 parts of polyester trees are added in a reservoir
The BA-80 of fat SETAL 1606,10 parts of butylated amino resin SETAMINE US-146 BB-72,15 part of two carbamide compound are modified
The VX-60 of Eudragit S ETALUX 91757,1 part of benzotriazole UV absorbers Tinuvin 928,0.5
Part steric hindrance amine light stabilizer Tinuvin292,0.1 part of polyester modification dimethyl silicone polymer class levelling agent BYK-331,0.5 part
Esters of acrylic acid levelling agent BYK-358N and 30 parts of diluent butyl acetates, 30min is stirred using mixer, obtains the component
A。
Component B preparation method：
Under nitrogen protection, add and 70 parts of isocyanate resins are added under 30 parts of diluent butyl acetates, stirring
Desmodur 3300, is stirred for 10min, obtains the component B.
Prepare the acrylic acid-polyurethane type coating varnish composition：By component A and component B by weight 100：30
Ratio is mixed, and obtains the acrylic acid-polyurethane type coating varnish composition, and the mixture AB need to be used in 30 minutes
It is complete.The acrylic acid-polyurethane type coating varnish composition is two-component high solid clear coat composition.
Using the steel plate after phosphatization electrophoresis, electrophoretic coating thickness is 20 ± 3 μm；(thickness 30-40 μ are applied in spray car
m)；Aqueous finish paint (15-20 μm of thickness) is sprayed, is dodged after dry 4min, into after 80 DEG C of baking oven baking 5min, then the Gao Gu is sprayed
140 DEG C of insulations of baking oven are put into after body part acrylic acid-polyurethane type coating varnish composition (40-50 μm of thickness), levelling 7min
30min.Spraying method can use electrostatic rotating cup spraying, and manual air gun can also be selected to spray.
Purposes：The high solid acrylic acid-polyurethane type coating varnish composition of the present embodiment, can be applied outside automobile
In portion's application, coat that obtained film richness is good, clarity is high, marresistance good, is particularly suitable for use in automobile external coating, together
When be also applied for the external coatings of automotive hub, motorcycle, engineering machinery, light industrial products etc..
Embodiment 5
The material of other in component is same as Example 1, and difference is, esters of acrylic acid levelling agent Modaflow-2100's
Parts by weight are 0.5 part；
Component A preparation method：
Under nitrogen protection, the thermosetting Hydroxylated acrylic resins of 20 parts of high solids, 5 parts of polyester trees are added in a reservoir
The BA-80 of fat SETAL 1606,10 parts of butylated amino resin SETAMINE US-146 BB-72,15 part of two carbamide compound are modified
The VX-60 of Eudragit S ETALUX 91757,1 part of benzotriazole UV absorbers Tinuvin 928,0.5
Part steric hindrance amine light stabilizer Tinuvin292,0.1 part of polyester modification dimethyl silicone polymer class levelling agent BYK-331,0.5 part
Esters of acrylic acid levelling agent Modaflow-2100 and 10 parts of diluent butyl acetates, 30min is stirred using mixer, obtains institute
State component A.
Component B preparation method：
Under nitrogen protection, add and 70 parts of isocyanate resins are added under 30 parts of diluent butyl acetates, stirring
Desmodur 3300, is stirred for 10min, obtains the component B.
Prepare the acrylic acid-polyurethane type coating varnish composition：By component A and component B by weight 100：30
Ratio is mixed, and obtains the acrylic acid-polyurethane type coating varnish composition, and the mixture AB need to be used in 30 minutes
It is complete.The acrylic acid-polyurethane type coating varnish composition is two-component high solid clear coat composition.
Using the steel plate after phosphatization electrophoresis, electrophoretic coating thickness is 20 ± 3 μm；(thickness 30-40 μ are applied in spray car
m)；Aqueous finish paint (15-20 μm of thickness) is sprayed, is dodged after dry 4min, into after 80 DEG C of baking oven baking 5min, then the Gao Gu is sprayed
140 DEG C of insulations of baking oven are put into after body part acrylic acid-polyurethane type coating varnish composition (40-50 μm of thickness), levelling 7min
30min.Spraying method can use electrostatic rotating cup spraying, and manual air gun can also be selected to spray.
Purposes：The high solid acrylic acid-polyurethane type coating varnish composition of the present embodiment, can be applied outside automobile
In portion's application, coat that obtained film richness is good, clarity is high, marresistance good, is particularly suitable for use in automobile external coating, together
When be also applied for the external coatings of automotive hub, motorcycle, engineering machinery, light industrial products etc..
Performance test：
(1) film evaluation
As shown in figure 1, acrylic acid-polyurethane type coating varnish composition coating flowing hanging evaluation methods of the Fig. 1 for the present invention
Schematic diagram.Using electrostatic rotating cup coating machine, it is determined that application under the conditions of (electrostatic pressure -90KV, rotation cup rotating speed be
35000rpm, shape air pressure is 0.15MPa, and discharge-amount is 400cc/min, and rifle is away from for 25cm) to test plate (panel) A (Circularhole diameters
8mm) sprayed, from right to left, the spray gun speed of travel is consequently formed thickness by thick to thin painting by accelerating slowly in spraying direction
Layer.Measurement varnish sagging to thickness at circular hole lower edge 1cm is used as varnish sagging limit thickness.
The film prepared for the formula of embodiment 1 and embodiment 2 and comparative example 1~3, by obtained by following evaluation method
As a result it is as shown in table 1：
Table 1
Note：◎ is good, and △ is slightly worse, × unqualified.
The performance of the acrylic acid-polyurethane type coating varnish composition prepared to embodiment 3~5 is determined,
Its film chemical-resistant, construction solid part, marresistance, construction solid part can reach required standard, coating flow root
Determined according to above-mentioned evaluation method, >=55 μm.
(2) screening test of use ratio
The following is the screening test of butylated amino resin (crosslinking agent) ratio in component A, the acrylic acid-polyurethane
The performance data of type coating varnish composition is as shown in table 2：
Table 2
| Butylated amino resin | 5 parts | 10 parts | 15 parts | 20 parts |
| Hardness | It is soft | It is softer | Firmly | It is softer |
| Marresistance | × | △ | ◎ | △ |
| Chemical-resistant | ◎ | ◎ | ◎ | ◎ |
Note：◎ is good, and △ is slightly worse, × unqualified.
Butylated amino resin (crosslinking agent) can reach preferably combination property 10-20 parts in component A.And can by table 2
Know, butylated amino resin (crosslinking agent) is in 10-20 parts of amount ranges, the acrylic acid-polyurethane type coating varnish group
The film marresistance of compound can have optimal balance.
The acrylic acid-polyurethane type coating varnish composition of the present invention, it constructs solid containing high (organic solvent volatile matter<
420g/L), construction sagging limit is high (reaching more than 55 μm), with high marresistance, is particularly suitable for use in automobile external coating, together
When be also applied for the external coatings of automotive hub, motorcycle, engineering machinery, light industrial products etc..
The acrylic acid-polyurethane type coating varnish composition of the present invention, can apply in automobile external coating, coat
The film richness that arrives is good, clarity is high, marresistance good, is particularly suitable for use in automobile external coating, while being also applied for automobile
The external coating of wheel hub, motorcycle, engineering machinery, light industrial products etc..
Obviously, the above embodiment of the present invention is only intended to clearly illustrate example of the present invention, and is not pair
The restriction of embodiments of the present invention, for those of ordinary skill in the field, may be used also on the basis of the above description
To make other changes in different forms, the embodiment that the present invention is enumerated can not give all embodiments thoroughly
To the greatest extent, it is every to belong to obvious changes or variations that technical scheme extends out still in protection model of the invention
The row enclosed.All documents referred in the present invention are all incorporated as reference in this application, independent just as a document
It is cited as with reference to such.
Claims (10)
1. a kind of acrylic acid-polyurethane type coating varnish composition, it is characterised in that：Include the component of following parts by weight：
Component A includes the component of following parts by weight：
Component B includes the component of following parts by weight：
50-80 parts of isocyanate resin,
Second 20-50 parts of diluent；
The component A and component B mass ratio is 100:(28~32).
2. acrylic acid-polyurethane type coating varnish composition according to claim 1, it is characterised in that：The high solid
The number-average molecular weight of the thermosetting Hydroxylated acrylic resin of part is 3000-5000, and hydroxyl value is 120~200mgKOH/g, solid tree
Resin acid value is 7.0-11.0mgKOH/g, and the high solid refers to that solid part is more than or equal to 75% weight.
3. acrylic acid-polyurethane type coating varnish composition according to claim 1, it is characterised in that：The crosslinking agent
For butylated amino resin.
4. acrylic acid-polyurethane type coating varnish composition according to claim 1, it is characterised in that：Two urea
Two carbamide compound modification amounts of polymer modified acrylic resin are 3.2-4.2%.
5. acrylic acid-polyurethane type coating varnish composition according to claim 1, it is characterised in that：The varnish is helped
Agent includes the component of following parts by weight：
6. acrylic acid-polyurethane type coating varnish composition according to claim 5, it is characterised in that：The ultraviolet light
Absorbent is benzotriazole UV absorbers；
The light stabilizer is steric hindrance amine light stabilizer；
The organosilicon levelling agent is polyester modification dimethyl silicone polymer class levelling agent；
The esters of acrylic acid levelling agent is non-reacted acrylate levelling agent.
7. acrylic acid-polyurethane type coating varnish composition according to claim 1, it is characterised in that：Described first is dilute
Agent is released for butyl acetate, ethyl acetate, 2-Butoxyethyl acetate, propylene glycol methyl ether acetate, mixed dibasic acid dibasic ester, 3-
At least one of ethoxyl ethyl propionate.
8. acrylic acid-polyurethane type coating varnish composition according to claim 1, it is characterised in that：The isocyanic acid
Ester resin is hexamethylene diisocyanate trimer；
Second diluent is butyl acetate, ethyl acetate, 2-Butoxyethyl acetate, propylene glycol methyl ether acetate, mixing
At least one of binary acid dibasic ester, 3- ethoxyl ethyl propionates.
9. a kind of preparation method of any described acrylic acid-polyurethane type coating varnish composition of claim 1 to 8, it is special
Levy and be：Comprise the following steps：
Component A preparation：
Under nitrogen protection, 5-15 parts of 20-40 parts of thermosetting Hydroxylated acrylic resin, the polyester resin of high solid are added, is handed over
Join 10-20 parts of agent, acrylic resin modified 10-30 parts two carbamide compounds, 1.61-5.7 parts of varnish auxiliary agent, the first diluent 5-30
Part, component A described in stirring to obtain；
Component B preparation：
Under nitrogen protection, 50-80 parts of isocyanate resin and 20-50 parts of the second diluent, component described in stirring to obtain are added
B；
By component A and component B in mass ratio 100:The ratio mixing of (28~32), obtains the acrylic acid-polyurethane type Lacquer finish
Clear coat composition.
10. a kind of any described acrylic acid-polyurethane type coating varnish composition of claim 1 to 8 is used for prepares coating
Purposes.
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| CN108192488A (en) * | 2017-12-29 | 2018-06-22 | 广州立邦涂料有限公司 | Solvent-type double-component, the clear coat composition of high slipping, Preparation method and use |
| CN111334106A (en) * | 2020-04-26 | 2020-06-26 | 江苏科环新材料有限公司 | Water-resistant salt-resistant anticorrosive paint |
| CN112442305A (en) * | 2019-08-29 | 2021-03-05 | 江苏宏源机电科技有限公司 | High-solid-content coating and preparation method thereof |
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| CN113166578A (en) * | 2018-12-07 | 2021-07-23 | 关西涂料株式会社 | Coating composition |
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| 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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