CN110330875A - A kind of aqueous priming paint and its construction technology - Google Patents
A kind of aqueous priming paint and its construction technology Download PDFInfo
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- CN110330875A CN110330875A CN201910495578.1A CN201910495578A CN110330875A CN 110330875 A CN110330875 A CN 110330875A CN 201910495578 A CN201910495578 A CN 201910495578A CN 110330875 A CN110330875 A CN 110330875A
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- priming paint
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- aqueous
- anhydride modified
- aqueous priming
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B05—SPRAYING OR ATOMISING IN GENERAL; APPLYING FLUENT MATERIALS TO SURFACES, IN GENERAL
- B05C—APPARATUS FOR APPLYING FLUENT MATERIALS TO SURFACES, IN GENERAL
- B05C9/00—Apparatus or plant for applying liquid or other fluent material to surfaces by means not covered by any preceding group, or in which the means of applying the liquid or other fluent material is not important
- B05C9/02—Apparatus or plant for applying liquid or other fluent material to surfaces by means not covered by any preceding group, or in which the means of applying the liquid or other fluent material is not important for applying liquid or other fluent material to surfaces by single means not covered by groups B05C1/00 - B05C7/00, whether or not also using other means
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B05—SPRAYING OR ATOMISING IN GENERAL; APPLYING FLUENT MATERIALS TO SURFACES, IN GENERAL
- B05C—APPARATUS FOR APPLYING FLUENT MATERIALS TO SURFACES, IN GENERAL
- B05C9/00—Apparatus or plant for applying liquid or other fluent material to surfaces by means not covered by any preceding group, or in which the means of applying the liquid or other fluent material is not important
- B05C9/08—Apparatus or plant for applying liquid or other fluent material to surfaces by means not covered by any preceding group, or in which the means of applying the liquid or other fluent material is not important for applying liquid or other fluent material and performing an auxiliary operation
- B05C9/14—Apparatus or plant for applying liquid or other fluent material to surfaces by means not covered by any preceding group, or in which the means of applying the liquid or other fluent material is not important for applying liquid or other fluent material and performing an auxiliary operation the auxiliary operation involving heating or cooling
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B05—SPRAYING OR ATOMISING IN GENERAL; APPLYING FLUENT MATERIALS TO SURFACES, IN GENERAL
- B05D—PROCESSES FOR APPLYING FLUENT MATERIALS TO SURFACES, IN GENERAL
- B05D1/00—Processes for applying liquids or other fluent materials
- B05D1/002—Processes for applying liquids or other fluent materials the substrate being rotated
- B05D1/005—Spin coating
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B05—SPRAYING OR ATOMISING IN GENERAL; APPLYING FLUENT MATERIALS TO SURFACES, IN GENERAL
- B05D—PROCESSES FOR APPLYING FLUENT MATERIALS TO SURFACES, IN GENERAL
- B05D1/00—Processes for applying liquids or other fluent materials
- B05D1/02—Processes for applying liquids or other fluent materials performed by spraying
-
- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08G—MACROMOLECULAR COMPOUNDS OBTAINED OTHERWISE THAN BY REACTIONS ONLY INVOLVING UNSATURATED CARBON-TO-CARBON BONDS
- C08G18/00—Polymeric products of isocyanates or isothiocyanates
- C08G18/06—Polymeric products of isocyanates or isothiocyanates with compounds having active hydrogen
- C08G18/28—Polymeric products of isocyanates or isothiocyanates with compounds having active hydrogen characterised by the compounds used containing active hydrogen
- C08G18/40—High-molecular-weight compounds
- C08G18/58—Epoxy resins
-
- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08G—MACROMOLECULAR COMPOUNDS OBTAINED OTHERWISE THAN BY REACTIONS ONLY INVOLVING UNSATURATED CARBON-TO-CARBON BONDS
- C08G18/00—Polymeric products of isocyanates or isothiocyanates
- C08G18/06—Polymeric products of isocyanates or isothiocyanates with compounds having active hydrogen
- C08G18/28—Polymeric products of isocyanates or isothiocyanates with compounds having active hydrogen characterised by the compounds used containing active hydrogen
- C08G18/40—High-molecular-weight compounds
- C08G18/62—Polymers of compounds having carbon-to-carbon double bonds
- C08G18/6204—Polymers of olefins
-
- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08G—MACROMOLECULAR COMPOUNDS OBTAINED OTHERWISE THAN BY REACTIONS ONLY INVOLVING UNSATURATED CARBON-TO-CARBON BONDS
- C08G18/00—Polymeric products of isocyanates or isothiocyanates
- C08G18/06—Polymeric products of isocyanates or isothiocyanates with compounds having active hydrogen
- C08G18/28—Polymeric products of isocyanates or isothiocyanates with compounds having active hydrogen characterised by the compounds used containing active hydrogen
- C08G18/40—High-molecular-weight compounds
- C08G18/62—Polymers of compounds having carbon-to-carbon double bonds
- C08G18/6216—Polymers of alpha-beta ethylenically unsaturated carboxylic acids or of derivatives thereof
-
- 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
- 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
- C09D7/20—Diluents or solvents
Abstract
The invention discloses a kind of aqueous priming paints, including water polyolefin system resin, unsaturated carboxylic acid or anhydride modified polyolefin, aqueous epoxy resins, water-based acrylic resin, the weight ratio that priming paint is mixed with curing agent is 100:10, unsaturated carboxylic acid or anhydride modified polyolefin are with maleic acid or maleic anhydride modified polyolefin, the mass ratio of each component is calculated by solid content, are as follows: 10~30 parts of water polyolefin system resin, 25~40 parts of unsaturated carboxylic acid or anhydride modified polyolefin, 5~10 parts of aqueous epoxy resins, 15~20 parts of water-based acrylic resin；Curing agent is weight percentage as 40~70 parts of at least one polyisocyanate curing agent and 15~70 parts of gamma-butyrolacton.The present invention substantially reduces the pollution of air, and the damage to people's health substantially reduces；Dry film resistance is high, and the painting rate of colored paint improves, thus can be reduced the use of colored paint；Its covering power of the invention is strong, reduces the expense of polishing.
Description
Technical field
The present invention relates to spraying exterior trim interior trim industries more particularly to automobile exterior interior trim to spray industry, and in particular to Yi Zhongshui
Property priming paint and its construction technology.
Background technique
Aqueous priming paint is the abbreviation of Water-soluble environment-friendlyanticorrosive metal protection priming paint.With groups such as water-base resin, lead-free pigment, water
At having the characteristics that fast drying, protective performance are excellent etc., can be used for the protective underlayer coating of metal substrate.Leaching can be used in the coating
The methods of painting, showering, spraying construction, the covering with paint of metal substrate suitable for industrial equipment, the vehicles and the product for civilian use, especially
Protection suitable for exporting steel surface is covered with paint, lacquer, colour wash, etc..But the country is on automobile exterior trimming parts at present, including vehicle body, these exterior trims of bumper
Spraying on part, does not have started using aqueous priming paint.The solvent bottom paint of existing use, since its covering power is bad, upper
It must polish before paint (being directed to spoiler, license plate, current japanning mode is still based on spraying), the time of polishing is long, takes
With height, several roads of polishing using the rubber of 320u granularity are needed at present；Solvent type priming paint is a further disadvantage is that product appearance
It is not bright enough.
Summary of the invention
It is an object of the present invention to overcome defect existing in the prior art, a kind of aqueous priming paint, environmental protection, levelling are provided
Property it is good, reduce polishing expense, the outer light of product is brighter；The pollution of air is substantially reduced, the damage to people's health substantially reduces；
Dry film resistance is high, and the painting rate of colored paint improves, thus can be reduced the use of colored paint.
To achieve the above object, the technical scheme is to design a kind of aqueous priming paints, including water polyolefin system tree
Rouge, unsaturated carboxylic acid or anhydride modified polyolefin, aqueous epoxy resins, water-based acrylic resin, priming paint are mixed with curing agent
Weight ratio is 100:10, and unsaturated carboxylic acid or anhydride modified polyolefin are with maleic acid or maleic anhydride modified polyolefin, respectively
The mass ratio of component is calculated by solid content, are as follows: 10~30 parts of water polyolefin system resin, 25~40 parts of unsaturated carboxylic acid or acid
Anhydride modified polyolefin, 5~10 parts of aqueous epoxy resins, 15~20 parts of water-based acrylic resin；Curing agent is weight percent
Than for 40~70 parts of at least one polyisocyanate curing agent and 15~70 parts of gamma-butyrolacton.Priming paint is mixed with curing agent
Weight ratio be 100:10, the volume ratio that priming paint is mixed with curing agent be 10:12；The density of aqueous priming paint is 1.23 ± 0.04g/
cm3；Dry film resistance≤10kohm (kilohm)；Diluent is aqueous in the raw material of aqueous priming paint, and VOC content is low, and clear
It washes spraying equipment and what paint feeding system used is also water, thus solvent-based paints are significantly less than to the pollution of air, and to people
The damage of health substantially reduces；The raw material of aqueous priming paint determines that priming paint itself is non-combustible, thus when greatly reducing construction
Fire hazard；The dry film resistance of aqueous priming paint is better than solvent type, and the painting rate of colored paint improves, thus reduces the use of colored paint；Water
Property priming paint is better than solvent bottom paint to the covering power of plastic surface defect；The plumpness of aqueous priming paint is better than solvent bottom paint.
Further technical solution is, its hydroxyl value of water-based acrylic resin is 10~70mgKOH/g, acid value is 80~
120mgKOH/g。
Further technical solution is that unsaturated carboxylic acid or anhydride modified polyolefin have melting within the scope of 40~100 DEG C
It puts and with the weight average molecular weight in 30000~180000 ranges.
Further technical solution is the weight average molecular weight and number-average molecular weight of unsaturated carboxylic acid or anhydride modified polyolefin
Ratio be 1~3.5；The weight content of total isocyanates of the polyisocyanate curing agent is 8% to 50%.To meet water
Property priming paint and solvent bottom paint mixed production, wire body do following rectification:
1, mix japanning room increase newly a set of independent aqueous priming paint paint feeding system (aqueous priming paint system, curative system and cleaning it is molten
Agent system)
2, robot increases a set of aqueous priming paint colour changing valve group and paint pipeline newly
3, robot is sprayed using Double-gun head, realizes that aqueous priming paint is kept completely separate with solvent borne priming paint, non-interference
4, independent loops blower fan group is added between priming paint levelling, guarantees temperature and humidity balance；
The present invention also provides technical solution be that the construction technology of aqueous priming paint includes the following steps:
By the still stirring of each component of above-mentioned weight content 15 minutes or more, using the coating mode of aerial spraying, rifle mouth
Bore is 1.1-1.5mm；Spray pressure is 3.5bar；The coating dry film film thickness of spraying is 10-20 μm；Activation time is 60min；
Flash-off time is 7-10 minutes at room temperature；Drying time is 15 minutes；Drying temperature is 80 DEG C；
Wherein the dry- film density of the aqueous priming paint film is 2.11g/cm3, viscosity 53-63mPas；PH value is
8.0-9.0；Dry film resistance≤10kohm.VOC is 9.0 ± 0.5%；
Further technical solution is that the substrate of spraying is ABS or PC/ABS or PP/EPDM, and it is clear to spray preceding isopropanol
Wash substrate, degreasing and/or flame treatment.
The present invention also provides technical solution be that the construction technology of aqueous priming paint includes the following steps:
By the still stirring of each component of above-mentioned weight content 15 minutes or more, using a coating, point was primed on workpiece
Rotational workpieces afterwards select suitable priming paint spot printing amount and workpiece rotation speed according to the shape of pattern on final japanning workpiece；And
Dry to workpiece in rotational workpieces, the dry time is 10 minutes；Drying temperature is 80 DEG C.This new coating japanning mode
Suit-specific pattern requirement that vehicle sprays is customized, the coating work without subsequent complexity for some automobile enthusiasts
Skill realizes coating in the expansion of spoiler plane in primer coating by the Plane Rotation of spoiler using centrifugal force；And
Determine it is whether to paint line etc. when applying great point or spot printing when spot printing according to final pattern, so that original uninteresting upper lacquerer
Make to become rich in the creative aesthetic for even increasing work, and the method can japanning together namely after spot printing
Spoiler, which has rotated priming paint and can be achieved with desired pattern, (does not comply fully with final design certainly, but not
Interfere the progress of this work, original this suit-specific be exactly it is more casual, there is exaggeration vision of that drop on surface to imitate
Fruit saves later process and direction and location is also wanted to coat so considering just to generate this effect when the coating of direct priming paint in japanning
Spraying, improves the efficiency of japanning, saves the time of japanning).Rotational workpieces after spot printing, also accelerate levelling to a certain extent
Speed because can regard as, spoiler is motionless, above air dynamic, which reduces circulated air units when levelling to need
The blowing amount wanted.
Further technical solution is, also opposite with rotational workpieces quiet against setting one on workpiece in spot printing process
Profiling ring baffle only.The setting of profiling ring baffle can more accurately realize finally desired design pattern, by supporting
The ring baffle leaned on, in spoiler rotation, it reaches ring to the coating that point is coated in ring baffle due to centrifugal force at most
Ring baffle can not be overflowed on the ring inner wall of shape baffle, so can finally form desired pattern；More limited scheme is
In ring baffle towards workpiece (referred to spoiler, certainly, this programme can also be used for the paint application of other automobile exterior trimming parts)
End face on rubber strip is fixedly installed, can better adapt to spoiler its curved surfaces can more preferably prevent coating from overflowing annular
Baffle cannot precisely form desired pattern.
Further technical solution is that round turntable is arranged under workpiece, and round turntable is rotatably arranged on plinth, side
The step cutting pattern being adapted to round turntable is arranged in shape the middle of the base, and round turntable and plinth use identical material, rectangular
Setting heat-conducting oil pipes in spiral distribution in pedestal, using the center of circle of round turntable as center Spiral distribution, circle turns heat-conducting oil pipes
Shaft is fixedly installed in disk lower surface, the drive shaft of setting and shaft synchronous rotation above round turntable, fixed below drive shaft to connect
Connect profiling baffle.Round turntable and plinth using identical material and be all made of thermal conductivity it is good such as metal material convenient for passing
Heat；Shaft is fixedly installed in round turntable lower surface, and shaft is fixedly connected with the output shaft of speed reducer, and speed reducer is connected to the motor,
Shaft rotation drives round turntable rotation after electric motor starting；Drive shaft is then similar, and top connects the output of another speed reducer
Axis, this speed reducer are connected with another motor, drive the speed reducer of drive shaft, motor to be fixedly connected on slide plate, slide plate slides
Setting is in rotary fixture (in order to realize workpiece rotation, the rotary fixture of setting, including round turntable above-mentioned and square base
Seat) bracket on, realize workpiece rotation before choose profiling baffle shape and driving slide plate under is about to profiling ring baffle pressure
After on to workpiece, that is, spoiler two motors of round turntable or more are run simultaneously.Heat conducting pipe Spiral distribution and just
The hot oil come in is close to round turntable, as spiral heat conducting pipe is gradually transmitted to outer circle (instructing the biggish circle of heat pipe outer diameter), so
Recycling filtering and heating reuses afterwards, is that the oil of heat is first close to round turntable part always in this way, convenient for conducting heat to flow-disturbing
On plate, convenient for the solidification of paint vehicle.The shaft and drive shaft of synchronous rotation setting up and down, may be implemented profiling annular slab and spoiler
It is opposing stationary, ensure that using centrifugal force realize japanning during, paint vehicle does not overflow, and is capable of forming desired figure
Case.
Further technical solution is that Blowing drum is arranged on plinth or suction tube, Blowing drum are connected with air pump, is taken out
Air duct is connected with negative pressure pump.The setting of Blowing drum has been to speed up the speed of coating levelling, can be improved the efficiency of japanning；And exhausting
Cylinder setting be then consider in no profiling ring baffle by due to rotation flow to spoiler rim coating take away in time (when
So not taking away truly, but negative pressure is passed through when coating is also uncured by draft effect in time and is led to circle
It on shape turntable, no longer rests on spoiler, avoids the thickness of dry film of spoiler part blocked up).
The process of spot printing turning of work piece is as follows:
After determining the pattern on spoiler, spoiler is fixed on round turntable after selecting suitable profiling annular slab
(for example the elastic Fastener by being arranged on round turntable or claw etc. fix spoiler), then adjusts profiling annular slab
(adjustment can be by being arranged slide plate<be assumed to be the again on slide plate<being assumed to be the first slide plate>for position to the position for needing spot printing
Two slide plates > mode), the first slide plate slides be arranged on the second slide plate, the bracket of rotary fixture is arranged in the second slide plate slides
On；First slide plate is vertical with the glide direction of the second slide plate (and being horizontal direction), can make profiling annular slab tune in this way
To the position of needs, then (spot printing can use spray gun to a certain amount of coating of spot printing, but pressure is transferred to very little；Or spot printing uses
The coating conveying mechanism simply prepared can be realized, by being connected to a cone cylinder in one end of delivery pipe after a pump conveying coating
The defeated paint mouth of the spot printing of shape can also be arranged a plug at defeated paint mouth, defeated paint mouth is blocked when being not required to spot printing), then drive
Vertical direction sliding slide plate make the rubber strip of profiling annular slab stand tightly against spoiler after simultaneously drive shaft driving
The driving motor of motor and drive shaft realizes that profiling annular slab and spoiler rotate simultaneously, forms desired drop and splash flow-disturbing
The special visual effect of plate surface.
The advantages and beneficial effects of the present invention are: diluent is aqueous, VOC content in the raw material of aqueous priming paint
It is low, and what cleaning coating device and paint feeding system used is also water, thus is significantly less than solvent-based paints to the pollution of air, and
And the damage to people's health substantially reduces；The raw material of aqueous priming paint determines that priming paint itself is non-combustible, thus greatly reduces and apply
The fire hazard in working hour；The dry film resistance of aqueous priming paint is better than solvent type, and the painting rate of colored paint improves, thus reduces making for colored paint
With；Aqueous priming paint is better than solvent bottom paint to the covering power of plastic surface defect；The plumpness of aqueous priming paint is better than solvent type
Priming paint.Depending on the suit-specific pattern requirement that this new coating japanning mode sprays vehicle for some automobile enthusiasts
System, in primer coating by the Plane Rotation of spoiler, realizes coating using centrifugal force without the coating processes of subsequent complexity
In the expansion of spoiler plane；And determine it is whether to paint line when applying great point or spot printing when spot printing according to final pattern
Deng so that original uninteresting japanning work became rich in the creative aesthetic for even increasing work, and the method can
With only japanning together namely spot printing rear spoiler rotated upper complete priming paint and can be achieved with desired pattern；Save later process also
Direction and location coating spraying is wanted, the efficiency of japanning is improved, saves the time of japanning；Rotational workpieces after spot printing, also certain journey
The speed of levelling is accelerated on degree because can regard as, spoiler is motionless, above air dynamic, which reduces levellings
When circulated air unit need blowing amount.The setting of profiling ring baffle can more accurately realize finally desired pattern flower
Sample, by against ring baffle, put the coating that is coated in ring baffle in spoiler rotation its at most due to centrifugal force
Reason reaches on the ring inner wall of ring baffle and can not overflow ring baffle, so can finally form desired pattern；Shape baffle
Rubber strip is fixedly installed on end face towards workpiece, can better adapt to spoiler its curved surfaces can more preferably prevent coating
Desired pattern cannot be precisely formed by overflowing ring baffle.Heat conducting pipe Spiral distribution and the hot oil just come in close to round turntable,
As spiral heat conducting pipe is gradually transmitted to outer circle (instructing the biggish circle of heat pipe outer diameter), then recycles filtering and heating and reuse, this
Sample is the oil of heat always first close to round turntable part, convenient for conducting heat on spoiler, convenient for the solidification of paint vehicle.Up and down
The shaft and drive shaft rotated synchronously is set, the opposing stationary of profiling annular slab and spoiler may be implemented, ensure that and utilizing
During centrifugal force realizes japanning, paint vehicle is not overflowed, and is capable of forming desired pattern.The setting of Blowing drum has been to speed up painting
The flat speed of stream, can be improved the efficiency of japanning；And the setting of suction tube is then that consideration will in no profiling ring baffle
Since the coating that rotation flow to spoiler rim is taken away in time.
Detailed description of the invention
Fig. 1 is a kind of schematic diagram of aqueous priming paint construction technology embodiment two of the present invention；
Fig. 2 is the side view of Fig. 1.
In figure: 1, workpiece；2, profiling ring baffle；3, round turntable；4, plinth；5, heat-conducting oil pipes；6, shaft；7,
Drive shaft；8, Blowing drum or suction tube.
Specific embodiment
With reference to the accompanying drawings and examples, further description of the specific embodiments of the present invention.Following embodiment is only
For clearly illustrating technical solution of the present invention, and not intended to limit the protection scope of the present invention.
Embodiment one:
The present invention is a kind of aqueous priming paint, including water polyolefin system resin, unsaturated carboxylic acid or anhydride modified polyolefin,
Aqueous epoxy resins, water-based acrylic resin, the weight ratio that priming paint is mixed with curing agent are 100:10, unsaturated carboxylic acid or acid anhydrides
Improved polyalkene be with maleic acid or maleic anhydride modified polyolefin, the mass ratio of each component by solid content calculation, are as follows: 10~30
The water polyolefin system resin, 25~40 parts of unsaturated carboxylic acid or anhydride modified polyolefin of part, 5~10 parts of water-base epoxy tree
Rouge, 15~20 parts of water-based acrylic resin；Curing agent is weight percentage as 40~70 parts of at least one polyisocyanate
Curing agent and 15~70 parts of gamma-butyrolacton.Its hydroxyl value of water-based acrylic resin be 10~70mgKOH/g, acid value be 80~
120mgK OH/g.Unsaturated carboxylic acid or anhydride modified polyolefin with the fusing point within the scope of 40~100 DEG C and have 30000~
Weight average molecular weight in 180000 ranges.The weight average molecular weight and number-average molecular weight of unsaturated carboxylic acid or anhydride modified polyolefin
Ratio is 1~3.5；The weight content of total isocyanates of the polyisocyanate curing agent is 8% to 50%.
The construction technology of aqueous priming paint, includes the following steps:
By the still stirring of each component of above-mentioned weight content 15 minutes or more, using the coating mode of aerial spraying, rifle mouth
Bore is 1.1-1.5mm；Spray pressure is 3.5bar；The coating dry film film thickness of spraying is 10-20 μm；Activation time is 60min；
Flash-off time is 7-10 minutes at room temperature；Drying time is 15 minutes；Drying temperature is 80 DEG C；The wherein aqueous priming paint film
Dry- film density be 2.11g/cm3, viscosity 53-63mPas；PH value is 8.0-9.0；Dry film resistance≤10kohm.Spraying
Substrate is ABS or PC/ABS or PP/EPDM, cleans substrate, degreasing and/or flame treatment with isopropanol before spraying.
Embodiment two:
It is with the difference of embodiment one, as shown in Figure 1 and Figure 2, the construction technology of aqueous priming paint includes the following steps:
By the still stirring of each component of above-mentioned weight content 15 minutes or more, using a coating, point was primed on workpiece 1
Rotational workpieces 1 afterwards selects suitable priming paint spot printing amount and 1 rotation speed of workpiece according to the shape of pattern on final japanning workpiece 1；
And it is dry to workpiece 1 in rotational workpieces 1, the dry time is 10 minutes；Drying temperature is 80 DEG C.In spot printing process, work
Also against one profiling ring baffle 2 opposing stationary with rotational workpieces 1 of setting on part 1.Workpiece 1 is lower to be arranged round turntable 3, circle
Shape turntable 3 is rotatably arranged on plinth 4, and the step cutting pattern being adapted to round turntable 3 is arranged in the middle part of plinth 4, round
Turntable 3 and plinth 4 use identical material, setting heat-conducting oil pipes 5 in spiral distribution, heat-conducting oil pipes 5 in plinth 4
Using the center of circle of round turntable 3 as center Spiral distribution, shaft 6 is fixedly installed in 3 lower surface of round turntable, is set above round turntable 3
The drive shaft 7 rotated synchronously with shaft 6 is set, is fixedly connected with profiling baffle below drive shaft 7.Blowing is set on plinth 4
Cylinder or suction tube 8, Blowing drum is connected with air pump, and suction tube is connected with negative pressure pump.
The above is only a preferred embodiment of the present invention, it is noted that for the ordinary skill people of the art
For member, without departing from the technical principles of the invention, several improvements and modifications can also be made, these improvements and modifications
Also it should be regarded as protection scope of the present invention.
Claims (10)
1. a kind of aqueous priming paint, which is characterized in that including water polyolefin system resin, unsaturated carboxylic acid or anhydride modified polyene
Hydrocarbon, aqueous epoxy resins, water-based acrylic resin, the weight ratio that priming paint is mixed with curing agent be 100:10, unsaturated carboxylic acid or
Anhydride modified polyolefin be with maleic acid or maleic anhydride modified polyolefin, the mass ratio of each component by solid content calculation, are as follows: 10
~30 parts of water polyolefin system resin, 25~40 parts of unsaturated carboxylic acid or anhydride modified polyolefin, 5~10 parts of aqueous ring
Oxygen resin, 15~20 parts of water-based acrylic resin；Curing agent is weight percentage as 40~70 parts of the poly- isocyanide of at least one
Acid esters curing agent and 15~70 parts of gamma-butyrolacton.
2. a kind of aqueous priming paint according to claim 1, which is characterized in that its hydroxyl value of the water-based acrylic resin is 10
~70mgKOH/g, acid value are 80~120mgKOH/g.
3. a kind of aqueous priming paint according to claim 2, which is characterized in that the unsaturated carboxylic acid or anhydride modified polyene
Hydrocarbon is with the fusing point within the scope of 40~100 DEG C and with the weight average molecular weight in 30000~180000 ranges.
4. a kind of aqueous priming paint according to claim 3, which is characterized in that the unsaturated carboxylic acid or anhydride modified polyene
The weight average molecular weight of hydrocarbon and the ratio of number-average molecular weight are 1~3.5；The weight of total isocyanates of the polyisocyanate curing agent
Measuring content is 8% to 50%.
5. the construction technology of aqueous priming paint as described in any one of Claims 1-4, which comprises the steps of:
By the still stirring of each component of above-mentioned weight content 15 minutes or more, using the coating mode of aerial spraying, rifle mouthpiece diameter
For 1.1-1.5mm；Spray pressure is 3.5bar；The coating dry film film thickness of spraying is 10-20 μm；Activation time is 60min；Flash distillation
Time is 7-10 minutes at room temperature；Drying time is 15 minutes；Drying temperature is 80 DEG C；
Wherein the dry- film density of the aqueous priming paint film is 2.11g/cm3, viscosity is 53-63mP as；PH value is 8.0-
9.0；Dry film resistance≤10kohm.
6. the construction technology of aqueous priming paint according to claim 5, which is characterized in that the substrate of spraying is ABS or PC/ABS
Or PP/EPDM, substrate, degreasing and/or flame treatment are cleaned with isopropanol before spraying.
7. the construction technology of aqueous priming paint as described in any one of Claims 1-4, which comprises the steps of:
By the still stirring of each component of above-mentioned weight content 15 minutes or more, using a coating, back spin of priming is put on workpiece
It changes a job part, suitable priming paint spot printing amount and workpiece rotation speed is selected according to the shape of pattern on final japanning workpiece；And it is revolving
Change a job part when it is dry to workpiece, the dry time is 10 minutes；Drying temperature is 80 DEG C.
8. the construction technology of aqueous priming paint according to claim 7, which is characterized in that in the spot printing process, on workpiece
Also against one profiling ring baffle opposing stationary with rotational workpieces of setting.
9. the construction technology of aqueous priming paint according to claim 8, which is characterized in that round turntable is set under workpiece, it is round
Turntable is rotatably arranged on plinth, the step cutting pattern that setting is adapted to round turntable in the middle part of plinth, round turntable and
Plinth uses identical material, and setting heat-conducting oil pipes in spiral distribution in plinth, heat-conducting oil pipes are with round turntable
The center of circle be center Spiral distribution, shaft is fixedly installed in round turntable lower surface, synchronous with shaft turn of setting above round turntable
Dynamic drive shaft, drive shaft lower section are fixedly connected with profiling baffle.
10. the construction technology of aqueous priming paint according to claim 9, which is characterized in that Blowing drum is arranged on plinth
Or suction tube, Blowing drum are connected with air pump, suction tube is connected with negative pressure pump.
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