CN109321062A - A kind of polyurea modified high wear resistance coatings and preparation method and application - Google Patents
A kind of polyurea modified high wear resistance coatings and preparation method and application Download PDFInfo
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- CN109321062A CN109321062A CN201811113985.3A CN201811113985A CN109321062A CN 109321062 A CN109321062 A CN 109321062A CN 201811113985 A CN201811113985 A CN 201811113985A CN 109321062 A CN109321062 A CN 109321062A
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- C—CHEMISTRY; METALLURGY
- C09—DYES; PAINTS; POLISHES; NATURAL RESINS; ADHESIVES; COMPOSITIONS NOT OTHERWISE PROVIDED FOR; APPLICATIONS OF MATERIALS NOT OTHERWISE PROVIDED FOR
- C09D—COATING COMPOSITIONS, e.g. PAINTS, VARNISHES OR LACQUERS; FILLING PASTES; CHEMICAL PAINT OR INK REMOVERS; INKS; CORRECTING FLUIDS; WOODSTAINS; PASTES OR SOLIDS FOR COLOURING OR PRINTING; USE OF MATERIALS THEREFOR
- C09D133/00—Coating compositions based on homopolymers or copolymers of compounds having one or more unsaturated aliphatic radicals, each having only one carbon-to-carbon double bond, and at least one being terminated by only one carboxyl radical, or of salts, anhydrides, esters, amides, imides, or nitriles thereof; Coating compositions based on derivatives of such polymers
- C09D133/04—Homopolymers or copolymers of esters
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- C—CHEMISTRY; METALLURGY
- C09—DYES; PAINTS; POLISHES; NATURAL RESINS; ADHESIVES; COMPOSITIONS NOT OTHERWISE PROVIDED FOR; APPLICATIONS OF MATERIALS NOT OTHERWISE PROVIDED FOR
- C09D—COATING COMPOSITIONS, e.g. PAINTS, VARNISHES OR LACQUERS; FILLING PASTES; CHEMICAL PAINT OR INK REMOVERS; INKS; CORRECTING FLUIDS; WOODSTAINS; PASTES OR SOLIDS FOR COLOURING OR PRINTING; USE OF MATERIALS THEREFOR
- C09D7/00—Features of coating compositions, not provided for in group C09D5/00; Processes for incorporating ingredients in coating compositions
- C09D7/20—Diluents or solvents
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- C—CHEMISTRY; METALLURGY
- C09—DYES; PAINTS; POLISHES; NATURAL RESINS; ADHESIVES; COMPOSITIONS NOT OTHERWISE PROVIDED FOR; APPLICATIONS OF MATERIALS NOT OTHERWISE PROVIDED FOR
- C09D—COATING COMPOSITIONS, e.g. PAINTS, VARNISHES OR LACQUERS; FILLING PASTES; CHEMICAL PAINT OR INK REMOVERS; INKS; CORRECTING FLUIDS; WOODSTAINS; PASTES OR SOLIDS FOR COLOURING OR PRINTING; USE OF MATERIALS THEREFOR
- C09D7/00—Features of coating compositions, not provided for in group C09D5/00; Processes for incorporating ingredients in coating compositions
- C09D7/40—Additives
- C09D7/60—Additives non-macromolecular
- C09D7/61—Additives non-macromolecular inorganic
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- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08L—COMPOSITIONS OF MACROMOLECULAR COMPOUNDS
- C08L2203/00—Applications
- C08L2203/18—Applications used for pipes
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Abstract
The invention discloses a kind of polyurea modified high wear resistance coatings and preparation method and applications.The coating is made of host agent and curing agent, and wherein host agent and the parts by weight of curing agent are 100:10~60；Film thickness is 40-60 μm.Automobile-used polyurea modified high wear resistance coatings of the invention are free of heavy metal and restricted solvent, using spraying certainly.The use of new material, new technology solves former carbamide paint hand spray, significantly improves painting environment, reduce labor intensity of workers, improve production efficiency, reduce energy consumption.Automobile-used pick up loading space coating requirement is met, is the new technology that pick up loading space is applied to composite material ground using polyurea modified high abrasion, ultra-thin coating.
Description
Technical field
The invention belongs to pick up loading space composite material ground polyurea modified high wear resistance coatings technical fields, are related to lucid asparagus
Oneself is two different for ammonia acid ester resin, acrylic resin and HDI diisocyanate, IPDI isophorone diisocyanate, TMDI trimethyl
In particular the coating of cyanate curing agent is that one kind is exclusively used in pick up loading space, composite material substrate coatings technology and its system
Preparation Method and application.
Background technique
With the increasingly developed of Domestic Automotive Industry, the kind such as all kinds of cars, offroad vehicle, commercial vehicle, pick up and engineering truck
Class is various.Component needed for automobile is also developed from metal materials such as carbon steel, aluminium alloys to plastics, composite material.Automobile industry is multiple
The development of condensation material mainly under conditions of meeting its performance, mechanical strength, reduces car body weight, improves fuel and uses effect
Rate, overall structure lightweight.The U.S., European auto industry develop comparatively fast in this respect.Automobile cover, both wings, car door,
The positions such as pick up loading space use composite material automobile component.Some producers of China also start starting and use composite material automobile portion
Part, this just needs coating industry to develop different types of coating to meet the development of modern industry, protects compound ground
And decoration.The coating is also applied for the coating of engineering machinery simultaneously, and has wear-resisting, the demanding equipment of resistance to marring to paint film
And workpiece.
Polyurea modified high wear resistance coatings of new generation are the coating products for the exploitation of composite material ground.This product is applicable in
The products such as the composite material made of vinyl ester resin, epoxy resin, polyether modified epoxy resin, engineering plastics and plastic cement.
It can be smooth composite material or be embossed concave-convex leather patterns composite material.
Summary of the invention
The present invention be directed to the pick up loading space coating of composite material substrate coating, it is made of host agent and curing agent,
Wherein host agent and the parts by weight of curing agent are 100:10~100:60.Automotive composite material of the invention is resistance to polyurea modified height
Coating is ground, by using aspartate resin, acrylic resin.Add surfactant, wetting dispersing agent, defoaming agent,
The materials such as levelling agent, adhesion promoter, antiwear additive, ultraviolet absorber, stabilizer.Cooperate HDI diisocyanate, IPDI different again
Isophorone diisocyanate, TMDI trimethyl hexamethylene diisocyanate, individually or made of compound use curing agent " polyurea modified is high
Wear-resistant paint ".Proportion machine transportation system is painted through dedicated dual circuit, mechanical hand automatic coating is in composite material automobile component table
Face.Composite material, the bottoms such as engineering plastics, plastic cement are made suitable for vinyl ester resin, epoxy resin, polyether modified epoxy resin
Material coating.
By the compound use to acrylic resin and carbamide resin, using its, respectively characteristic, raising product solidify the present invention
Speed improves its crosslink density and improves consistency, improves the wearability and resistance to marring of resin.Two kinds of resins all have good simultaneously
Good weather resistance, meets the technical requirements of automobile external-use paint.By the introducing of antiwear additive, the resistance to of film is further improved
Mill, resistance to marring solve wear-resisting, the adhesion strength of the precious ultra-thin film of container.Promote resin by the way that adhesive force is added, solves
Coating is the poor adhesive force on composite material ground the problem of.By making it to adhesion promoter screening and the selection of additive amount
Characteristic gives full play to, and greatly improves coating in the adhesive force of composite material.Ground exempts to polish, and saves the work of manual polishing
Sequence improves technique and improves production efficiency.
The present invention passes through HDI hexamethylene diisocyanate, IPDI isoflurane chalcone diisocyanate, TMDI trimethyl oneself two isocyanides
The compound use of acid esters different proportion.According to the compounding of different proportion, film can be made to want between rigidity and elasticity by performance
It asks and is adjusted.
The present invention makes that paint film plate face is smooth, gloss is suitable by Surfactant, the optimization of delustering agent and reasonable employment
Degree, decorative appearance are splendid；Again by wear-resisting, adhesion strength raising, film is made not have good mechanical performance tightly, there are also good
Good dicoration.
It is an object of the present invention to solve skin by the modification of aspartate resin and the use of wear-resistant new material
Card loading space carbamide paint, painting film thickness, carriage body weight, difficulty of construction is big, labor intensity is high, seriously polluted problem.New polyureas
Coating coating thickness is down to present 40~60 μm from original 1500~2000 μm, and coating thickness is former film thickness
2.6~3.0%.The use of new material, new technology significantly improves painting environment, reduces labor intensity of workers, improves work
Efficiency reduces energy consumption.Polyurea modified high wear resistance coatings are the coating products for composite material exploitation.Suitable for composite material
The coating of the automobile components such as cover, both wings, car door before and after manufactured pick up compartment bucket, automobile.And engineering machinery and require it is wear-resisting,
The demanding product component of resistance to marring.
Polyurea modified high wear resistance coatings of the present invention are using dual circuit paint proportion machine conveying, and automatic to spray, ground exempts to polish,
Bottom surface unification, microthin coating, low-temperature setting have fabulous adhesive force with composite material, have fabulous ageing-resistant, salt fog resistance
Can, there is high-wearing feature, high scratch resistance energy.For film thickness at 40-60 μm, paint film coating is smooth, with fabulous water-fast
Property and resist gasoline and chemical resistance.
To achieve the above object, the invention discloses following technology contents
A kind of polyurea modified high wear resistance coatings, it is characterised in that the coating is made of host agent and curing agent, wherein host agent and solidification
The parts by weight of agent are 100:10~60；Film thickness is 40-60 μm；Host agent and curing agent are respectively by the original of following parts by weight
Material composition:
Host agent:
Aspartate resin 5-40
Acrylic resin 5-40
Pigment 2-20
Filler 0-20
Levelling agent 0.2-1.0
Wetting dispersing agent 0.3-3.0
Defoaming agent 0.2-1.0
Adhesion promoter 2-8
Antiwear additive 4-10
Ultraviolet absorber 2-8
Delustering agent 0-8
Solvent 20-40
Curing agent:
HDI hexamethylene diisocyanate 5-25
IPDI isoflurane chalcone diisocyanate 5-40
TMDI trimethyl hexamethylene diisocyanate 5-40
Stabilizer 0.5-2.0；
Levelling agent in the host agent are as follows: BYK-306, BYK-333, EFKA3239, DISPARLON LHP-95 or
tego1484；Defoaming agent BYK-141, HD-106, DISPARLON P-420 or tego N, 900 Tego；Wetting dispersing agent are as follows:
DISPARLON DA325, BYK-163, tego260 or EFKA PU4061；Adhesion promoter are as follows: tego STW, Niu Peisi
168SS-80 or beacon 147；Or three leaf SST-3Ds antiwear additive: R-972, PGI-(10 ... 40)；Ultraviolet absorber: BASF or platform
Gulf light forever；Delustering agent: PERGOPAK(M2 ... M4), Grace ED30, ED40 or Degussa OK-412, OK-512；
Pigment is mainly carbon black in the host agent, comprising: titanium dioxide, phthalocyanine blue, weather-proof organic yellow, BASF 254 are organic
The coloring pigments such as red, iron oxide red；Filler is mainly blanc fixe, including domestic and import different model product.
The curing agent HDI diisocyanate are as follows: N75, HI-100, HT-100, C-HXR；IPDI isophorone two is different
Cyanate SP-103S, GB905A-90, GB102-75 and Bayer Products；TMDI trimethyl hexamethylene diisocyanate is Bayer
Products etc.；Stabilizer are as follows: TI water suction stabilizer.
The solvent include: dimethylbenzene, heavy aromatics, ethyl acetate, butyl acetate, propylene glycol monomethyl ether, propandiol butyl ether,
Butanone, cyclohexanone, hexone, methyl amyl ketone, propylene glycol methyl ether acetate.
Wherein host agent and parts by weight determined by curing agent are preferably 100:10~60.According to the different curing agent ratios of selection
The formula of example combination, epoxy equivalent value is different in paint, and identified parts by weight are 100:10-60.Particularly preferred four groups
Proportion, parts by weight are respectively 100:15；100:30；100:45；100::55.
Wherein the solvent is preferably the raw material of following parts by weight:
Dimethylbenzene 50-70
Heavy aromatics 5-15
Butyl acetate 20-30
Methyl amyl ketone 5-15
Hexone 2-5.
The present invention further discloses the preparation methods of polyurea modified high wear resistance coatings, it is characterised in that by following step
It carries out:
(1) prepared by host agent:
A, prepared by resin: in aspartate resin, acrylic resin, adhesion promoter and formula 70% solvent is added
Enter in reaction kettle, tighten kettle cover, condenser is passed through recirculated water, stirs 20-30min at room temperature, until resin agitating is uniformly mixed
It is spare；
B, it grinds mill base: the resin prepared is added, is separately added into defoaming agent, wetting agent, pigment, anti-settling agent, filler, uses solvent
It adjusts to desired viscosity, grinds the road 2-4 with sand mill, until 20 μm of fineness is hereinafter, detection solid part, spare；
C, mill base (mill base is converted by solid part and used), defoaming agent, levelling agent, UV absorption painting: are separately added by formula ratio
Agent, antiwear additive, delustering agent high-speed stirred 30-60min to solid part 60 ± 1%, viscosity apply -4 glasss of 40-60S and reach technique
It is required that index；
(2) prepared by curing agent: by formula by the HDI diisocyanate of above-mentioned parts by weight, IPDI isoflurane chalcone diisocyanate
And stabilizer T I, solvent are mixed evenly, and adjust viscosity, solid part by technique requirement, filter and package；
(3) composite material for vehicle ground polyurea modified high wear resistance coatings match: by the host agent packed respectively and curing agent when use
With 100:15~100:55(by packaging label) parts by weight be converted into volume ratio, by dual circuit paint proportion machine defeated paint system
System carries out coating decoration using mechanical hand.
The present invention further discloses polyurea modified high wear resistance coatings for applying in composite material for vehicle part painting.
The composite material for vehicle part painting includes: that composite wood is made in vinyl ester resin, epoxy resin, polyether modified epoxy resin
Material, the coating of engineering plastics, plastic rubber substrate.Typical composite material for vehicle part painting refers to: pick up loading space composite wood
Expect the coating of ground.Experiment results proved: polyurea modified high wear resistance coatings and compound ground have fabulous adhesive force, greatly change
It has been apt to the inter-layer bonding force of coating and composite material.By the introducing of carbamide resin and the selection of wear-resistant new material, greatly change
It has been apt to the wear-resisting and adhesion strength of coating.Polyurea modified high wear resistance coatings of new generation can substitute the existing polyureas used completely and apply
Material.
It is anti-zoned in the ply adhesion of composite material ground and paint film coating high abrasion and height that present invention mainly solves coating
Hurt problem.High spot reviews pick up loading space now uses carbamide paint technical indicator, coating process, painting environment, has understood foreign countries
The use of composite material for vehicle, the mating and development trend painted.Main difficult point is to paint the interlayer knot with composite material
The resultant force i.e. wearability and resistance to marring of the adhesive force of paint and film.Pick up loading space has successively been investigated thus to manufacture and apply
Dress technique.The conditions such as process for producing composite material, composite material pre-treating technology and the requirement to coating.Finally determining scheme
It is to be equipped with adhesive force using main resin of the polyurea modified resin as coating and promote resin, high wear-resistant new material.Improve film
Adhesive force and wear-resisting, adhesion strength.
Polyurea modified high wear resistance coatings disclosed by the invention are possessed compared with prior art to be had the active effect that
1. automobile-used polyurea modified high wear resistance coatings of the invention, product fill the domestic gaps, meet automobile-used pick up loading space coating
Requirement is the new technology that pick up loading space is applied to composite material ground using polyurea modified high abrasion, ultra-thin coating.
2. automobile-used polyurea modified high wear resistance coatings of the invention are free of heavy metal and restricted solvent, using automatic spraying.
The use of new material, new technology solves former carbamide paint hand spray, significantly improves painting environment, reduces worker's labor
Fatigue resistance improves production efficiency, reduces energy consumption.
3. the present invention uses polyurea modified high wear resistance coatings, 1500~2000 μm of coating thickness from former polyureas paint are down to 40
~60 μm, new polyurea modified coating film thickness is the 2.6~3.0% of former polyureas film thickness.It is a kind of ultrathin, bottom surface
Unification, high abrasion, high scratch-resistant coating.The 15-20% that its coating cost price is used only to, have stronger competitiveness and compared with
Good economic benefit.
4. the automobile-used polyurea modified high wear resistance coatings of the present invention, suitable for including: vinyl ester resin, epoxy resin, polyethers
Composite material, the coating of the grounds such as engineering plastics, plastic cement is made in modified epoxy.Composite material ground has smooth ground
And it is embossed concave-convex leather patterns ground, there is good wear-resisting and adhesion strength.
Specific embodiment
The present invention is described below by specific embodiment.Unless stated otherwise, technological means used in the present invention
It is method known in those skilled in the art.In addition, embodiment is interpreted as illustrative, it is not intended to limit the present invention
Range, the spirit and scope of the invention are limited only by the claims that follow.To those skilled in the art, without departing substantially from this
Under the premise of invention spirit and scope, to the various changes or change of material component and dosage progress in these embodiments
It belongs to the scope of protection of the present invention.The raw materials used in the present invention and reagent are commercially available.
It is especially illustrated: BYK-306, BYK-333, EFKA3239, DISPARLON LHP-95 or tego1484；
Defoaming agent BYK-141, HD-106, DISPARLON P-420 or tego N, 900 Tego；Wetting agent are as follows: DISPARLON
DA325, BYK-163, tego260 or EFKA PU4061；Adhesion promoter are as follows: tego STW, Niu Peisi 168SS-80 or lamp
Tower 147；Antiwear additive: R-972, Gao Yu refine PGI-(10 ... 30), polyurethane granular 015 or aluminium oxide N6；Delustering agent:
PERGOPAK(M2 ... M4), Grace ED30, ED40 or degussa OK-412, OK-512.Wherein: EFKA represents Efka public affairs
Department (Xian Shu BASF AG), DISPARLON represents this Co., Ltd. of nanmu, BYK represents Bi Ke chemical company, tego represents Digao
Subsidiary, degussa represent Degussa company.TI water suction stabilizer.Other used reagents, resin, pigment, are consolidated auxiliary agent
Agent etc. is commercially available such as no particularly explanation.That is prepare chemical reagent of the invention can commercially or
Easily it is made by known method.Signified number of the invention can be gram, kilogram, mainly be added with the actual needs of production
With selected.
Embodiment 1
Technique:
Host agent: ingredient (resin, solvent, wetting dispersing agent, defoaming agent is added) → stirring → addition pigment, filler → is ground to carefully
It is viscous that (delustering agent, antiwear additive is added, looks for mill base, defoaming agent, levelling agent, ultraviolet absorber, solvent) → adjustment in degree qualification → paint
Degree, solid part → detection is qualified → filter and package.
Curing agent: ingredient (curing agent, solvent, water absorbing agent is added) → stirring evenly → adjusts viscosity, solid part → detection
It is qualified → to filter and package.
Main raw materials in proportion
Host agent: curing agent=100:15
Host agent:
5.0 parts of aspartate resin
38.0 parts of acrylic resin
No. 6 2.2 parts of carbon black Degussa
5.0 parts of F of filler Blanc Fixe
0.4 part of levelling agent BYK-306
0.8 part of wetting dispersing agent BYK-163
0.4 part of defoaming agent tego900
5 parts of adhesion promoter tego STW
2.5 parts of antiwear additive SST-3D
3.0 parts of delustering agent PERGOPAK M3
37.7 parts of solvent
Wherein solvent:
23 parts of dimethylbenzene
5.7 parts of butyl acetate
4.0 parts of heavy aromatics 100# heavy aromatics
2.0 parts of propylene glycol monomethyl ether
3.0 parts of hexone
Curing agent:
9.8 parts of HI-100
3.8 parts of dimethylbenzene
0.9 part of butyl acetate
0.5 part of stabilizer (TI water suction stabilizer)
Embodiment 2
Technique: with embodiment 1
Main raw materials in proportion
Host agent: curing agent=100:30
Host agent:
5.0 parts of aspartate resin
38.0 parts of acrylic resin
No. 6 2.2 parts of carbon black Degussa
5.0 parts of F of filler Blanc Fixe
0.4 part of levelling agent BYK-306
0.8 part of wetting dispersing agent BYK-163
0.4 part of defoaming agent tego900
5.0 parts of adhesion promoter tego STW
2.5 parts of antiwear additive SST-3D
3.0 parts of delustering agent PERGOPAK M3
37.7 parts of solvent
Wherein solvent:
23 parts of dimethylbenzene
5.7 parts of butyl acetate
4.0 parts of heavy aromatics
2.0 parts of propylene glycol monomethyl ether
3.0 parts of hexone
Curing agent:
8.7 parts of HI-100
12.2 parts of SP103S
6.9 parts of dimethylbenzene
1.7 parts of butyl acetate
0.5 part of stabilizer (TI water suction stabilizer)
Embodiment 3
Technique: with embodiment 1
Main raw materials in proportion
Host agent: curing agent=100:45
Host agent:
18.0 parts of aspartate resin
25.0 parts of acrylic resin
2.6 parts of carbon black spring the earth AS-661
6.6 parts of F of filler Blanc Fixe
0.3 part of levelling agent BYK-333
0.8 part of wetting dispersing agent BYK-163
0.4 part of defoaming agent DISPARLON P-420
3.8 parts of adhesion promoter tego STW
3.0 parts of antiwear additive SST-3D
4.1 parts of delustering agent PERGOPAK M3
Anti-settling agent R-972 1.5
33.9 parts of solvent
Wherein solvent:
16.7 parts of dimethylbenzene
5.2 parts of butyl acetate
4.0 parts of heavy aromatics 100# heavy aromatics
6.0 parts of methyl amyl ketone
2.0 parts of hexone
Curing agent:
11.8 parts of HI-100
15.2 parts of SP103S
14 parts of dimethylbenzene
3.5 parts of butyl acetate
0.5 part of stabilizer (TI water suction stabilizer)
Embodiment 4
Technique: with embodiment 1
Main raw materials in proportion
Host agent: curing agent=100:55
Host agent:
28.0 parts of aspartate resin
5.0 parts of acrylic resin
3.3 parts of carbon black Mitsubishi 2910B
9.5 parts of F of filler Blanc Fixe
0.3 part of levelling agent BYK-333
0.3 part of levelling agent LHP-95
0.6 part of wetting dispersing agent BYK-163
0.3 part of wetting dispersing agent Efka PU4061
0.4 part of defoaming agent DISPARLON P-420
5.0 parts of adhesion promoter tego STW
1.5 parts of antiwear additive SST-3D
8.2 parts of antiwear additive aluminium oxide N6
4.1 parts of delustering agent PERGOPAK M3
Anti-settling agent R-972 1.5
32.0 parts of solvent
Wherein solvent:
15.0 parts of dimethylbenzene
4.8 parts of butyl acetate
4.2 parts of heavy aromatics
8.0 parts of methyl amyl ketone
Curing agent:
18.7 parts of HI-100
12.5 parts of SP103S
18.6 parts of dimethylbenzene
4.7 parts of butyl acetate
0.5 part of stabilizer (TI water suction stabilizer)
The preparation method of embodiment 1-4 polyurea modified high wear resistance coatings, includes the following steps:
(1) prepared by host agent:
A, prepared by resin: reaction kettle is added in carbamide resin, acrylic resin, adhesion promoter and formula 70% solvent
It is interior, tighten kettle cover, condenser be passed through recirculated water, stirs 20-30min at room temperature, until resin agitating be uniformly mixed it is spare.
B, it grinds mill base: the resin prepared is added, be separately added into defoaming agent, wetting agent, pigment, anti-settling agent, filler and use
Solvent is adjusted to desired viscosity, grinds the road 2-4 with sand mill, until 20 μm of fineness is hereinafter, detection solid part.It is spare.
C, painting: mill base (mill base by solid part convert use), defoaming agent, levelling agent, ultraviolet is separately added by formula ratio
Absorbent, antiwear additive, delustering agent high-speed stirred 30-60min to solid part 60 ± 1%, viscosity apply -4 glasss of 40-60S and reach
Technique requires index (can be adjusted in certain amplitude according to post coat technical parameter).
(2) prepared by curing agent: by formula by the HDI diisocyanate of above-mentioned parts by weight, two isocyanide of IPDI isophorone
Acid esters and stabilizer T I, solvent are mixed evenly, and adjust viscosity, solid part by technique requirement, filter and package；
(3) automobile-used compound ground high-wearing feature coating formula: when use by the host agent packed respectively and curing agent with 100:15~
100:55(is by packaging label) parts by weight be converted into volume ratio, using dual circuit paint proportion machine paint-conveying system, using machine
Device hand carries out coating decoration.
Embodiment 5
Actual use:
The host agent packed respectively and curing agent prepared by embodiment 2 are converted into volume ratio with the parts by weight of 100:30, used
Dual circuit paints proportion machine paint-conveying system, using mechanical hand in coating on assembly line.It struggles against through degreasing → washing → drying in pick up compartment
→ spraying → baking → wind cooling temperature lowering → inspection automatically.Film thickness is painted between 40-60 μm, the smooth light of result paint film appearance
0 grade of mm of cunning, adhesive force (cross-hatching)；Hardness: 2H, wearability 20mg；Flexibility: 1 mm；Impact: 50cm；Water resistance 480h,
Paint film is not cracked, is not fallen off, drawing 0 grade of lattice 2mm；Oil resistivity (93# gasoline) 8h paint film is wrinkle resistant, does not crack, does not fall off, and draws lattice
0 grade of 2mm；Wet-heat resisting 240h, paint film is intact, draws 0 grade of lattice 2mm；Thermocycling: 15 circulations, paint film is intact, draws lattice 2mm
0 grade；Heat-proof aging, 80 DEG C/7d, paint film gloss loss is less than 10%；Salt fog resistance: 2000h, paint film is not blistering, does not fall off, paint film
It is intact, draw 0 grade of lattice 2mm；Ageing-resistant 1600h, gloss loss is less than 15%, and for color difference less than 3, product reaches design requirement.
The indices of automobile-used polyurea modified high wear resistance coatings detection prepared by the present invention are as follows:
1. important technological parameters
2. main performance index
3, automobile-used polyurea modified high wear resistance coatings prepared by the present invention have following excellent characteristics:
3.1, the service life of composite material can be extended using the high wear resistance coatings of polyurea modified.
3.2, by the research to coating, coating is solved in the adhesion problem of composite material.
3.3, by the cooperation of polyurea modified resin and curing agent, improve that resin is wear-resisting, scratch resistance from resin structure
Performance protects the service life of carriage body.
3.4, using special antiwear additive, further improve that film is wear-resisting, adhesion strength, that protects carriage body uses the longevity
Life.
3.5, there are good quick setting capabilities using polyurea modified high wear resistance coatings, improves working efficiency, energy conservation drop
Consumption.
3.6, using polyurea modified high wear resistance coatings, good adhesion, which makes it have, exempts from polishing function, removes and manually beats
Grinder sequence improves coating process, improves working environment, improves production efficiency.
3.7, automatic spraying, exempts to polish, microthin coating, and bottom surface unification is completed together.Picard cargo box is by original hand spray
It is changed to spray automatically.Former carbamide paint paint film coating 2mm, its coating of change carbamide paint of new generation are down to 50 μm.Reduce material
Expect cost, improve coating efficiency, comprehensive performance is higher than former paint performance.
Claims (7)
1. a kind of polyurea modified high wear resistance coatings, it is characterised in that the coating is made of host agent and curing agent, wherein host agent and solid
The parts by weight of agent are 100:10~60；Film thickness is 40-60 μm；Host agent and curing agent are respectively by following parts by weight
Raw material composition:
Host agent:
Aspartate resin 5-40
Acrylic resin 5-40
Pigment 2-20
Filler 0-20
Levelling agent 0.2-1.0
Wetting dispersing agent 0.3-3.0
Defoaming agent 0.2-1.0
Adhesion promoter 2-8
Antiwear additive 4-10
Ultraviolet absorber 2-8
Delustering agent 0-8
Solvent 20-40
Curing agent:
HDI hexamethylene diisocyanate 5-25
IPDI isoflurane chalcone diisocyanate 5-40
TMDI trimethyl hexamethylene diisocyanate 5-40
Stabilizer 0.5-2.0；
Levelling agent in the host agent are as follows: BYK-306, BYK-333, EFKA3239, DISPARLON LHP-95 or
tego1484；Defoaming agent BYK-141, HD-106, DISPARLON P-420 or tego N, 900 Tego；Wetting dispersing agent are as follows:
DISPARLON DA325, BYK-163, tego260 or EFKA PU4061；Adhesion promoter are as follows: tego STW, Niu Peisi
168SS-80 or beacon 147；Or three leaf SST-3Ds antiwear additive: R-972, PGI-(10 ... 40)；Ultraviolet absorber: BASF or platform
Gulf light forever；Delustering agent: PERGOPAK(M2 ... M4), Grace ED30, ED40 or Degussa OK-412, OK-512；
Pigment is mainly carbon black in the host agent, comprising: titanium dioxide, phthalocyanine blue, weather-proof organic yellow, BASF 254 are organic
Red, iron oxide red coloring pigment；Filler is mainly blanc fixe；
The curing agent HDI diisocyanate are as follows: N75, HI-100, HT-100, C-HXR；IPDI isophorone diisocyanate
Ester SP-103S, GB905A-90, GB102-75 and Bayer product；TMDI trimethyl hexamethylene diisocyanate；Stabilizer are as follows: TI water suction
Stabilizer；The solvent include: dimethylbenzene, heavy aromatics, ethyl acetate, butyl acetate, propylene glycol monomethyl ether, propandiol butyl ether,
Butanone, cyclohexanone, hexone, methyl amyl ketone, propylene glycol methyl ether acetate.
2. polyurea modified high wear resistance coatings described in claim 1, wherein host agent is with parts by weight determined by curing agent
100:15~55.
3. the described in any item polyurea modified high wear resistance coatings of claim 1-2, wherein the solvent is mainly following weight
The raw material of number:
Dimethylbenzene 50-70
Heavy aromatics (100# heavy aromatics) 5-15
Butyl acetate 20-30
Methyl amyl ketone 5-15
Hexone 2-5.
4. the preparation method that benefit requires any one of 1-3 polyurea modified high wear resistance coatings, it is characterised in that by following step
It carries out:
(1) prepared by host agent:
A, prepared by resin: reaction kettle is added in carbamide resin, acrylic resin, adhesion promoter and formula 70% solvent
It is interior, tighten kettle cover, condenser be passed through recirculated water, stirs 20-30min at room temperature, until resin agitating be uniformly mixed it is spare；
B, it grinds mill base: the resin prepared is added, is separately added into defoaming agent, wetting agent, pigment, anti-settling agent, filler, uses solvent
It adjusts to desired viscosity, grinds the road 2-4 with sand mill, until 20 μm of fineness is hereinafter, detection solid part, spare；
C, mill base (mill base is converted by solid part and used), defoaming agent, levelling agent, UV absorption painting: are separately added by formula ratio
Agent, antiwear additive, delustering agent high-speed stirred 30-60min to solid part 60 ± 1%, viscosity apply -4 glasss of 40-60S and reach technique
It is required that index；
(2) prepared by curing agent: by formula by the HDI diisocyanate of above-mentioned parts by weight, IPD isoflurane chalcone diisocyanate I
And stabilizer, solvent are mixed evenly, and adjust viscosity, solid part by technique requirement, filter and package；
(3) composite material for vehicle ground high-wearing feature coating formula: by the host agent packed respectively and curing agent with 100 when use:
The parts by weight of 15~100:55 are converted into volume ratio, paint proportion machine paint-conveying system by dual circuit, are applied using mechanical hand
Dress construction.
5. any one of the claim 1-3 polyurea modified high wear resistance coatings in composite material for vehicle part painting for applying.
6. application described in claim 5, wherein the composite material for vehicle part painting includes: vinyl ester resin, epoxy
Composite material, engineering plastics, plastic rubber substrate coating are made in resin, polyether modified epoxy resin.
7. application described in claim 5, wherein the composite material for vehicle part painting refers to pick up loading space composite wood
Expect the coating of substrate coating.
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| CN116463037A (en) * | 2023-05-10 | 2023-07-21 | 深圳飞扬骏研新材料股份有限公司 | Polyaspartic polyurea anticorrosive paint for petrolatum anticorrosive belt and preparation method thereof |
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