CN103351795B - Poly-lucid asparagus car paint and preparation method and application - Google Patents
Poly-lucid asparagus car paint and preparation method and application Download PDFInfo
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Abstract
The present invention relates to a kind of poly-lucid asparagus car paint, it is made up of host and curing agent, and wherein the parts by weight of host and curing agent are 100:20～100:50. The present invention coordinates isocyanates, catalyst, diluent etc. to make the poly-lucid asparagus car paint of series by using poly-lucid asparagus resin to be equipped with the materials such as pigment of all kinds, anti-settling agent, dispersant, filler, defoamer, levelling agent, resist sagging auxiliary agent again. This series automobiles coating can be applied to various automobile heads, bodywork surface under certainly dry or low-temperature bake condition, and one time coating paint film thickness regulates at 20-80 μ m. This coating is adjustable drying time; when thick painting, do not produce sagging; spraying paint film smooth, there is excellent physicochemical property, automobile is played to splendid protection and decorative effect, this product can be widely used in the application of the products such as body of a motor car, automobile bodies, auto parts and components.
Description
Technical field
The invention belongs to car paint protection field, relate to poly-lucid asparagus cold coating, say more specifically a kind of poly-dayPreparation method and the application of door winter car paint.
Background technology
The auto output of China in 2004 has reached 5,000,000, but possesses from the automobile of world wide Nei Kan ChinaMeasure still lowlyer, analyzing China's automobile pollution according to the concrete condition of China should be at 1.4 hundred million, therefore China's automobile industryStill there is the very large market space. So large also a large amount of automobile coating of corresponding demand of automobile market, and this demandAlso will keep for a long time and progressively increase. At present, automobile coating industry has very most of use import to paint the product of enterprise, home made articleBoard occupancy volume is very little. Cause the reason of this situation to have to be greatly because client to aspects such as paint performance, environmental protectionRequirement can not be met, and client has to use imported product. Owing to using imported product to cause very to profit marginLarge pressure also greatly reduces enterprise's competitive strength in the world simultaneously.
The Water-borne modification of coating, highly filled be two great development directions of current coating industry. Highly filled coatingTechnically, on cost, in performance, more show powerful competitive advantage. Using at present in automobile coating field is roasting more widelyPaint, is fabulous protection and decoration because it has good performance to automobile, is that common air-dried coating is beyond one's reach.
This project is taking the poly-lucid asparagus resin of high activity as base-material, and the coating solid of preparing taking automobile coating demand as target containsMeasure highly, paint film property not only reaches good antiseptic property but also ensured excellent weatherability and ornamental. Particularly poly-lucid asparagusCar paint be a kind of can be from coating dry, can low-temperature bake, the energy consumption of greatly having saved high-temperature baking. Certainly dryCondition is issued to the performance of baking-type paint, greatly improves on construction solid simultaneously, and clarity is splendid. Can be described as automobileThe very big progress of coating, has solved and has needed large-scale baking place and slow the asking of manufacturing schedule for large-scale automobiles such as busTopic. In the face of the huge market demand and the ever-increasing application prospect of automobile coating, the poly-lucid asparagus car paint of exploitation has realityMeaning and the wide market space.
Summary of the invention
The object of the invention is to, overcoming existing car paint needs the shortcoming of high-temperature baking to form quick self-drying system,Keep good anti-corrosive properties, ornamental and weatherability simultaneously, in improving construction solid, reached splendid clarity. ThisThe poly-lucid asparagus car paint of one that invention provides, this coating is made up of host and curing agent, wherein the weight of host and curing agentAmount umber is 100:20～100:50. Preferred parts by weight are 100:40-50.
Particularly preferred parts by weight are 100:40.
Particularly preferred parts by weight are 100:50.
Particularly preferred parts by weight are 100:20.
Host of the present invention, curing agent comprise the raw material of following parts by weight:
Poly-lucid asparagus resin 40-80
Pigment 2-60
Anti-settling agent 0.3-1
Dispersant 2-10
Levelling agent 0.1-1
Anti-sag auxiliary agent 0.3-3
Defoamer 0.1-1
Flatting silica 0-8
Solvent 2.2-5
Curing agent:
Isocyanate resin 90-98
Catalyst 0.5-1.5
Solvent 2-5.
Solvent in poly-lucid asparagus car paint host of the present invention, comprising: MEK, butyl glycol ether acetic acidEster, butyl acetate, n-propyl acetate, hexone, isopropyl alcohol, propylene glycol monomethyl ether, dimethylbenzene, cyclohexanone, different fluorine thatKetone, propandiol butyl ether etc., preferably: butyl acetate, different fluorine that ketone, dimethylbenzene or 2-Butoxyethyl acetate. Preferably host is moltenAgent is the raw material of following parts by weight:
Dimethylbenzene 1-2
Butyl acetate 1-2
2-Butoxyethyl acetate 0.1-0.5
Different fluorine that ketone 0.1-0.5
Pigment of the present invention is bright red 3302, bright red 170R, titanium white 706, titanium white 595, carbon black MA100, carbon black200#, carbon black 6#, phthalocyanine blue, permanent violet or medium chrome yellow etc., preferably: titanium white 595, carbon black 6# or phthalocyanine blue etc.
Anti-settling agent is bentonite, dustproof wax or aerosil, preferably: dustproof wax.
Flatting silica is ED-30, F168F or TSA-260L etc., preferably: ED30 flatting silica.
Levelling agent is: BYK-378 polyester modification siloxanes, BYK-310 polyester modification siloxanes, deggusa1484 poly-thirdOlefin(e) acid fat, EFKA3777 polyacrylate or EFKA3239 polysiloxanes, preferably: EFKA3239 polysiloxanes.
Anti-sag auxiliary agent is: the nano level modified urea of NAD-12, BYK-410 modified urea or BYK-430 modified urea, preferably:BYK-410 modified urea.
Defoamer is: P-104S defoamer, 5800F defoamer, OX-60 defoamer, A530 defoamer or BYK-141 froth breakingAgent, preferably: BYK-141 defoamer.
Dispersant is: EFKA-4010 dispersant, BYK-163 dispersant, BYK-110 dispersant, BYK-161 dispersant,EFKA-4080 dispersant or DA325 dispersant, preferably: EFKA-4010 dispersant.
Solvent in poly-lucid asparagus car paint curing agent of the present invention, comprising: butyl acetate, butyl glycol ether vinegarAcid esters, n-propyl acetate, dimethylbenzene, hexone, dimethyl carbonate, MEK, propylene glycol monomethyl ether, cyclohexanone etc.,Preferred: dimethylbenzene, butyl acetate, 2-Butoxyethyl acetate or dimethyl carbonate.
The raw material that wherein solvent in preferred consolidation agent is following parts by weight:
Dimethylbenzene 1-2
Butyl acetate 1-2
2-Butoxyethyl acetate 0-0.5
Dimethyl carbonate 0-0.5
The isocyanate resin of curing agent is: isocyanates 3800, isocyanates 103P, isocyanates 3400 or isocyanic acidEster 750, preferably: isocyanates 3400.
Catalyst is: dibutyl tin laurate, sulfonic acid zinc or sodium sulfonate, preferably: dibutyl tin laurate.
The preparation method of poly-lucid asparagus car paint of the present invention, comprises the steps:
1, host preparation
(1) batching, grinding: by the resin binder of above-mentioned parts by weight, dispersant, pigment, anti-settling agent, flatting silica, froth breakingAgent, mixing and stirring, is ground to fineness to 5-15 μ m.
(2) paint: at the uniform velocity slowly add solvent, levelling agent, resist sagging auxiliary agent, froth breaking under stirring at 800-1000 rev/minAgent, fully stirs and regulates evenly, need to regulate gloss to add as requested flatting silica high-speed stirred qualified to fineness again, withThe adjusting of Shi Jinhang color reaches colour table requirement. Be 55-65 second with being coated with-4 glasss in 23 DEG C of mensuration dope viscosities, solids content is80-90%, filters and packages;
2, curing agent preparation: by the isocyanate resin of above-mentioned parts by weight, catalyst, solvent, mixing and stirring, mistakeFilter packaging;
3, the proportioning of poly-lucid asparagus car paint: when use by the host of packaging respectively and curing agent with 100:20～100:50 ratio of weight and number mixes and adds appropriate diluent and stirs, and adjusting viscosity, after working viscosity, can carry out workpieceSpraying application.
The present invention further discloses the application of poly-lucid asparagus car paint at car, big bus, compartment, auto parts and components etc.Middle application. Auto parts and components wherein comprise: handle, bumper etc.
The present invention gathers lucid asparagus resin by use, utilizes that himself distinctive solids content is high, viscosity is low, antiseptic powerBy force, the characteristic such as good weatherability, make paint film there is good long-effective corrosion performance and excellent weatherability, it is low that coating has high solidThe characteristic of viscosity has ensured good workability and splendid paint film appearance, has solved at automobile, compartment, auto parts and components etc.Workpiece needs antiseptic property, weatherability, ornamental all good unifications, has simplified production technology, has reduced production cost, has strengthenedThe competitiveness of product.
Poly-lucid asparagus car paint of the present invention, by the screening to base-material, dispersant, pigment, solvent and cooperation, improvesCoating construction solid and ensured that the excellence of film is ornamental.
Poly-lucid asparagus car paint of the present invention, by dispersant, defoamer, levelling agent, resist sagging auxiliary agent rationallyCoordinate and solved coating flowing hanging and the ornamental contradiction of paint film appearance, make paint film clarity splendid.
Poly-lucid asparagus car paint of the present invention, by having solved the reasonable coordination of isocyanates and catalyst and solventThe problems such as paint film appearance, the easy foaming of paint film.
Poly-lucid asparagus car paint of the present invention, by the reasonable coordination to poly-lucid asparagus base-material, isocyanates and solventSolve film from dry, quick-drying and film performance, ornamental problem.
Poly-lucid asparagus car paint of the present invention, is equipped with pigment, anti-settling agent, flatting silica, divides with gathering above lucid asparagus resinThe materials such as powder, defoamer, levelling agent, resist sagging auxiliary agent coordinate isocyanate curing agent, catalyst etc. to make " poly-lucid asparagus againCar paint ", product solids content is high, construction is simple, can under certainly dry or low-temperature bake condition, be applied to automobile, compartment, automobileThe surfaces such as parts, coating paint film thickness can regulate at 20-80 μ m, drying varniss rapidly, surfacing, claritySplendid, non-foaming, sagging not, have excellent physicochemical property, and automobile, compartment, auto parts and components are played to splendid protection, dressDecorations effect.
The indices that poly-lucid asparagus car paint (embodiment 1-3) prepared by the present invention detects is as follows:
1, performance indications:
Former paint viscosity (being coated with-4 glasss, 23 DEG C) 55-65s
Solids content: 80-90%
Solidify: surface drying :≤30min
Do solid work :≤4h
Flow: >=80 μ m
Appearance of coat: smooth smooth
Clarity (horizontal plane): >=0.7
Adhesive force: (cross-hatching) mm≤1
Hardness: >=H
Pliability: be not more than 1mm
Deep freeze resistance: (5-25 DEG C, 3 circulations) paint film does not ftracture, do not come off. Salt spray resistance: 840h is non-foaming, not rawRust.
Resistance to sulfuric acid (0.05mol/L): 24h, non-foaming, non-corrosive.
Resistance to NaOH (0.1mol/L): 4h, non-foaming, non-corrosive.
Resistance to gasoline (93#): 8h, non-foaming, nondiscolouring.
Resistance to machine oil (SF10W/30): 24h, non-foaming, nondiscolouring.
Resistance to diesel oil (0# diesel oil): 24h, non-foaming, nondiscolouring.
Artificial ageing resistance: 1000h, loss of gloss rate≤10%. after not polishing loss of gloss rate≤30%, polishing
Humidity resistance: 240h, paint film is unchanged
Weatherability: be exposed to the sun 24 months in Hainan, paint film is without chapping, bubble, peel off and obviously fading.
2, product performance:
" poly-lucid asparagus car paint " of the present invention has following excellent specific property:
(1) solids content is high: this product solids content is high can reach 80-90%, and construction solid reaches more than 75%, greatlyReduce the discharge capacity of VOC.
(2) surface drying is fast; Coating paint film thickness 30-40 μ m(dry film), under 25-35 DEG C of condition, surface drying is less than 30min.
(3) do solid work soon: paint film 30-40 μ m(dry film), 4h hardness can reach the above hardness of pencil HB.
(4) clarity excellence: the clarity of this product can reach 0.8, has reached splendid appearance effect.
(5) ageing-resistant: this product has excellent ageing-resistant performance, holding workpiece protection for a long time.
(6) salt spray resistance: this product salt fog resistance excellence, paint film can stand adverse circumstances test.
The good effect that poly-lucid asparagus car paint of the present invention has compared with existing coating is:
1, poly-lucid asparagus car paint of the present invention, it will gather first lucid asparagus base-material and be incorporated into automobile coating system, productExcellent performance, has opened up the new direction in car paint field. This product meets the anti-of the workpiece such as automobile, compartment, auto parts and componentsRotten, weather-proof, decoration application instructions for use; Solve under certainly dry or low-temperature bake condition and constructed, simultaneously to surface drying speed and realityDry requirement requirement fast; Reach the requirement of automobile finish application high solid; Antiseptic property and weather resistance, decoration are reachedEffective unification of performance; Reach the performance that is equal to high-temperature baking paint film from dry coating film; Reach splendid paint film clarity; ProduceProduct do not contain heavy metal, VOC content is low, meet environmental requirement.
2, product purpose: " poly-lucid asparagus car paint " is mainly used in the painting of the products such as automobile, compartment, auto parts and componentsDress.
Detailed description of the invention
For simple and object clearly, below appropriate omission the description of known technology, in order to avoid those are unnecessaryDetails affects the description to the technical program. Below in conjunction with preferred embodiment, the present invention will be further described.
Be illustrated especially: poly-lucid asparagus resin has commercially available; BYK-163, BYK-378, BYK-141, EFKA4010,The auxiliary agents such as deggusal1484, wherein BYK represents that Bi Ke company, EFKA represent that EFKA company, deggusa represent Degussa public affairsDepartment. Preparing chemical reagent of the present invention all can buy from the market or easily make by known method. Indication of the present inventionUmber can be gram, kilogram or ton, mainly selected with the actual needs of producing.
Embodiment 1
Main raw materials in proportion: host: curing agent=100 part: 20 parts.
Wherein:
Host:
40 parts of poly-lucid asparagus resins
(595) 50 parts of pigment
0.5 part of levelling agent (BYK-378)
3.5 parts of dispersants (BYK-161)
0.3 part of anti-sag auxiliary agent (BYK-410)
0.6 part of anti-settling agent (dustproof wax)
0.3 part of defoamer (BYK-141)
1.3 parts of flatting silicas (ED30)
3.5 parts of solvents
Host solvent burden ratio is wherein:
1.3 parts of dimethylbenzene
1.5 parts of butyl acetates
0.5 part of 2-Butoxyethyl acetate
0.2 part of different fluorine that ketone
Curing agent:
19 parts of isocyanate resins (isocyanates 3400)
0.2 part of catalyst (dibutyl tin laurate)
0.8 part of solvent
Wherein in curing agent, solvent burden ratio is:
0.24 part of dimethylbenzene
0.4 part of butyl acetate
0.06 part of 2-Butoxyethyl acetate
0.1 part of dimethyl carbonate
Embodiment 2
Main raw materials in proportion: host: curing agent=100 part: 40 parts.
Wherein:
Host:
65 parts of poly-lucid asparagus resins
26 parts of pigment (phthalocyanine blue, titanium white 595 or goth black 6#)
0.4 part of levelling agent (EFKA3239)
5 parts of dispersants (BYK-161)
0.4 part of anti-settling agent (dustproof wax)
0.3 part of anti-sag auxiliary agent (BYK-410)
0.3 part of defoamer (BYK-141)
2.6 parts of solvents
Wherein the solvent of host is:
1.0 parts of dimethylbenzene
1.1 parts of butyl acetates
0.3 part of 2-Butoxyethyl acetate
0.2 part of different fluorine that ketone
Curing agent:
38.4 parts of isocyanate resins (isocyanates 3400)
0.4 part of catalyst (dibutyl tin laurate)
1.2 parts of solvents
Wherein the solvent burden ratio of curing agent is:
0.4 part of dimethylbenzene
0.6 part of butyl acetate
0.08 part of 2-Butoxyethyl acetate
0.12 part of dimethyl carbonate
Embodiment 3
Main raw materials in proportion: host: curing agent=100 part: 50 parts
Host:
79 parts of poly-lucid asparagus resins
8 parts of pigment (goth black 6# or titanium white 595)
0.3 part of anti-settling agent (dustproof wax)
0.2 part of levelling agent (EFKA3239)
8 parts of dispersants (BYK-161)
0.2 part of anti-sag auxiliary agent (BYK-410)
0.3 part of defoamer (BYK-141)
4 parts of solvents
Wherein the solvent burden ratio of host is:
1.3 parts of dimethylbenzene
2.0 parts of butyl acetates
0.5 part of 2-Butoxyethyl acetate
0.2 part of different fluorine that ketone
Curing agent:
48.25 parts of isocyanate resins (isocyanates 3400)
0.5 part of catalyst (dibutyl tin laurate)
1.25 parts of solvents
Solvent burden ratio is wherein:
0.5 part of dimethylbenzene
0.6 part of butyl acetate
0.1 part of 2-Butoxyethyl acetate
0.05 part of dimethyl carbonate
The preparation method of the poly-lucid asparagus car paint of embodiment 1-3, comprises the steps:
1, host preparation
(1) batching, grinding: by the resin binder of above-mentioned parts by weight, dispersant, pigment, anti-settling agent, flatting silica, froth breakingAgent, mixing and stirring, is ground to fineness to 5-15 μ m.
(2) paint: at the uniform velocity slowly add solvent, levelling agent, resist sagging auxiliary agent, froth breaking under stirring at 800-1000 rev/minAgent, fully stirs and regulates evenly, need to regulate gloss to add as requested flatting silica high-speed stirred qualified to fineness again, withThe adjusting of Shi Jinhang color reaches colour table requirement. Be 55-65 second with being coated with-4 glasss in 23 DEG C of mensuration dope viscosities, solids content is80-90%, filters and packages;
2, curing agent preparation: by the isocyanate resin of above-mentioned parts by weight, catalyst, solvent, mixing and stirring, mistakeFilter packaging;
3, the proportioning of poly-lucid asparagus car paint: when use by the host of packaging respectively and curing agent with 100:20～100:50 ratio of weight and number mixes and adds diluent and stirs, and adjusting viscosity, after working viscosity, can carry out the spray of workpieceBe coated with construction.
The contrast test of the actual use of embodiment 4()
Conventional composite coating is used for the example of body of a motor car aspect:
Method: conventional Car Body Painting adopts japanning+acrylic acid ammonia in anaphoretic priming+Amino-Polyester high-temperature bakingThe composite coating of base high-temperature baking finish paint is protected automobile, reaches the object of decoration, protection.
Step: 1. pair body of a motor car carries out the pre-treatment work such as oil removing, rust cleaning, phosphatization, cleaning.
2. the body of a motor car of cleaning out carries out the application of anaphoretic priming, and after application, float paint removing and wait work,Then carry out the high-temperature baking of 180 DEG C/30 minutes.
3. after electrophoretic primer is cooling, carry out detail sanding, cleaning, then carry out painting in Amino-Polyester high-temperature bakingSpraying, the film after spraying carries out the high-temperature baking of 140 DEG C/30 minutes.
4. the vehicle body of composite coating of painting in Amino-Polyester high-temperature baking to be scribbled is cooling, carries out grinding process, cleaningAfter, application acrylic-amino high-temperature baking finish paint, the film after spraying carries out the high-temperature baking of 140 DEG C/30 minutes.
5. after composite coating bone dry, carry out the test of film performance.
Test result: composite coating planar thickness 110 μ m, facade film thickness 100 μ m, its result paint film appearance is richerFull, smooth; Clarity reaches 0.7; Adhesive force (cross-hatching) mm≤1; Hardness: >=H; Pliability :≤1mm; Deep freeze resistance: (5-25 DEG C, 3 circulations) paint film do not ftracture, do not come off; Salt fog resistance: (5% salt solution) 840 hours, non-foaming, non-corrosive; Moisture-proofHot: 240h, paint film is unchanged; Resistance to sulfuric acid (0.05mol/L): 24h, non-foaming, non-corrosive; Resistance to NaOH (0.1mol/L): 4h, non-foaming, non-corrosive; Resistance to gasoline (93#): 8h, non-foaming, nondiscolouring; Resistance to machine oil (SF10W/30): 24h, does not riseBubble, nondiscolouring; Resistance to diesel oil (0# diesel oil): 24h, non-foaming, nondiscolouring; Artificial ageing resistance 1000h is qualified. Hainan is exposed to the sun 24Month, qualified
Poly-lucid asparagus car paint prepared by the present invention is used in the example of body of a motor car aspect:
Method: poly-lucid asparagus car paint application employing ability cathode electrophoresis primary coat+poly-lucid asparagus automobile finish coating protectionMode, reaches the object of decorating and protecting.
Step:
1. pair body of a motor car carries out the pre-treatment work such as oil removing, rust cleaning, phosphatization, cleaning.
2. the body of a motor car of cleaning out carries out the application of anaphoretic priming, and after application, float paint removing and wait work,Then carry out the high-temperature baking of 180 DEG C/30 minutes.
3. after anaphoretic priming is cooling, carry out detail sanding, cleaning, the packaging respectively of then being prepared by embodiment 1-3Poly-lucid asparagus car paint host mix with the ratio of weight and number of 100:40 with curing agent, add diluent sticky to constructingDegree can use dual circuit or aerial spraying machine to spray after adjusting, and the body of a motor car after spraying can be little from doing 24Time or low-temperature bake (80 DEG C/30 minutes) dry.
4. after composite coating bone dry, carry out the test of film performance.
Test result: plane film thickness 70 μ m, facade film thickness 65 μ m, its result paint film appearance is plentiful, smooth, freshReflecting property reaches 0.8; Adhesive force (cross-hatching) mm≤1; Hardness: >=2H; Pliability :≤1mm; Deep freeze resistance: (5-25 DEG C, 3Individual circulation) paint film do not ftracture, do not come off; Salt fog resistance: (5% salt solution) 1440 hours, non-foaming, non-corrosive; Humidity resistance:480h, paint film is unchanged; Resistance to sulfuric acid (0.05mol/L): 10 days, non-foaming, non-corrosive; Resistance to NaOH (0.1mol/L): 14My god, non-foaming, non-corrosive; Resistance to gasoline (93#): 20 days, non-foaming, nondiscolouring; Resistance to machine oil (SF10W/30): 20 days, do not riseBubble, nondiscolouring; Resistance to diesel oil (0#): 7 days, paint film was unchanged; Artificial ageing resistance 2000h is qualified. Weatherability: Hainan is exposed to the sun 24Month, qualified. The body of a motor car spraying has reached the standard of excellent anti-corrosive properties, ornamental and weatherability.
Comparing result explanation:
(1) poly-lucid asparagus car paint adopts two-layer composite coating spraying, and more common three layers of composite coating protection have been savedWorkmen and shortened the engineering time, has simplified construction technology.
(2) poly-lucid asparagus car paint construction solid has significantly and improves, reduced VOC discharge capacity, reduced environment andWorkmen's harm, meets energy-saving and cost-reducing policy.
(3) poly-lucid asparagus car paint can be dried from dry or low-temperature bake, large compared with the form of common application high-temperature bakingWidth has reduced energy resource consumption, for client has reduced painting cost. Meet energy-saving and emission-reduction requirement.
(4) plentiful, the clarity of the outward appearance of poly-lucid asparagus car paint obviously improves, and makes the visual effect of automotive coatings brightAobvious raising.
(5) poly-lucid asparagus car paint composite coating physics, chemical property excellence, more common composite coating has obviouslyAdvantage, has improved ornamental, protective, the durability of automotive coatings entirety.
Although the present invention has done detailed description in conjunction with its special embodiment, clearly to the artSkilled people still can make various changes and improvements, can not depart from Spirit Essence of the present invention and protection modelEnclose.
Claims (3)
1. a preparation method for poly-lucid asparagus car paint, is characterized in that this coating is made up of host and curing agent, whereinThe parts by weight of host and curing agent are 100:20～50; Described host, the raw material that curing agent is following parts by weight:
Host:
Poly-lucid asparagus resin 40-80
Pigment 2-60
Anti-settling agent 0.3-1
Dispersant 2-10
Levelling agent 0.1-1
Anti-sag auxiliary agent 0.3-3
Defoamer 0.1-1
Flatting silica 0-8
Solvent 2.2-5
Curing agent:
Isocyanate resin 90-98
Catalyst 0.5-1.5
Solvent 2-5;
Wherein pigment is bright red 3302; Anti-settling agent is bentonite; Flatting silica is ED-30; Levelling agent is: BYK-378; Anti-sag helpsAgent is NAD-12; Defoamer is: P-104S; Dispersant is EFKA-4010; The isocyanate resin of curing agent is: isocyanates3800; Catalyst is: sodium sulfonate, and its preparation method is undertaken by following step:
(1) host preparation:
A, batching, grinding: by poly-lucid asparagus resin, dispersant, defoamer, pigment, anti-settling agent, the flatting silica of above-mentioned parts by weightMixing and stirring, is ground to 5-15 μ m;
B, paint: at the uniform velocity under stirring, slowly add solvent, levelling agent, resist sagging auxiliary agent, defoamer at 800-1000 rev/min, fillPoint stirs and regulate even, need to regulate gloss to add as requested flatting silica high-speed stirred qualified to fineness again, enter simultaneouslyThe adjusting of row color reaches colour table requirement; Be 55-65 second with being coated with-4 glasss in 23 DEG C of mensuration dope viscosities, solids content is 80-90%, filter and package;
(2) curing agent preparation: by the isocyanate resin of above-mentioned parts by weight, catalyst, solvent, mixing and stirring, filtersPackaging;
(3) proportioning of poly-lucid asparagus car paint: when use by the host of packaging respectively and curing agent with 100:20～100:50Ratio of weight and number mix and add diluent and stir, adjusting viscosity, after working viscosity, can carry out the spraying of workpieceConstruction.
2. the preparation method of poly-lucid asparagus car paint described in claim 1, wherein the solvent in host is following parts by weightRaw material:
Dimethylbenzene 1-2
Butyl acetate 1-2
2-Butoxyethyl acetate 0.1-0.5
Different fluorine that ketone 0.1-0.5;
Solvent in curing agent is the raw material of following parts by weight:
Dimethylbenzene 1-2
Butyl acetate 1-2
2-Butoxyethyl acetate 0-0.5
Dimethyl carbonate 0-0.5.
3. the poly-lucid asparagus car paint that described in employing claim 1 prepared by the preparation method of poly-lucid asparagus car paint is at sedan-chairApplication in car, big bus, compartment, auto parts and components product painting.
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| CN110760253A (en) * | 2019-11-18 | 2020-02-07 | 浙江树人学院（浙江树人大学） | Polyaspartic acid resin coating for luggage compartment and preparation method and application thereof |
| CN110951376A (en) * | 2019-12-11 | 2020-04-03 | 天津科瑞达涂料化工有限公司 | Polyaspartic acid shielding varnish and preparation method and application thereof |
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| CN102796451B (en) * | 2012-09-12 | 2015-09-09 | 天津科瑞达涂料化工有限公司 | Long-effective corrosion, weather-proof, super quick drying paint and preparation method and application |
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