CN105949943B - A kind of aqueous two component epoxy priming paint of automobile haveing excellent performance and preparation method thereof - Google Patents
A kind of aqueous two component epoxy priming paint of automobile haveing excellent performance and preparation method thereof Download PDFInfo
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- CN105949943B CN105949943B CN201610294687.3A CN201610294687A CN105949943B CN 105949943 B CN105949943 B CN 105949943B CN 201610294687 A CN201610294687 A CN 201610294687A CN 105949943 B CN105949943 B CN 105949943B
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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
- C09D163/00—Coating compositions based on epoxy resins; Coating compositions based on derivatives of epoxy resins
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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
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- C09D7/60—Additives non-macromolecular
- C09D7/61—Additives non-macromolecular inorganic
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- C—CHEMISTRY; METALLURGY
- C09—DYES; PAINTS; POLISHES; NATURAL RESINS; ADHESIVES; COMPOSITIONS NOT OTHERWISE PROVIDED FOR; APPLICATIONS OF MATERIALS NOT OTHERWISE PROVIDED FOR
- C09D—COATING COMPOSITIONS, e.g. PAINTS, VARNISHES OR LACQUERS; FILLING PASTES; CHEMICAL PAINT OR INK REMOVERS; INKS; CORRECTING FLUIDS; WOODSTAINS; PASTES OR SOLIDS FOR COLOURING OR PRINTING; USE OF MATERIALS THEREFOR
- C09D7/00—Features of coating compositions, not provided for in group C09D5/00; Processes for incorporating ingredients in coating compositions
- C09D7/40—Additives
- C09D7/60—Additives non-macromolecular
- C09D7/63—Additives non-macromolecular organic
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Abstract
The invention discloses a kind of aqueous two component epoxy priming paint of the automobile with excellent comprehensive performance and preparation method thereof.Water-base epoxy priming paint of the present invention is made of component A and component B.Component A is made of epoxy resin, cosolvent, slurry and auxiliary agent, and deionized water, auxiliary agent, extender pigment, rust resisting pigment and pigment are contained in slurry.Component B contains polyamine curing agent, deionized water, cosolvent and auxiliary agent.After finishing material by component A slurry formulas, high speed dispersion 15min is ground to 30 μm of fineness ＜ to get slurry subsequently into sand mill, epoxy resin, cosolvent, slurry and auxiliary agent is uniformly mixed up to component A.Component A and component B are mixed according to a certain percentage, deionized water is added to adjust viscosity, spraying application is up to epoxy primer film.Water-base epoxy priming paint provided by the invention not only realizes the Water-borne modification of automobile epoxy primer, and VOC content is greatly lowered, and it is with excellent comprehensive performance.
Description
Technical field
The present invention relates to car paint technical fields, and in particular to a kind of aqueous double-component epoxy bottom of excellent combination property
Paint and preparation method thereof.
Background technology
The car paint in China is still based on solvent type at present, and a large amount of volatile organic compounds (VOCs) are in coating process
In serious pollution is caused to ecological environment, while great harm is also brought to human health.As people's environmental protection is anticipated
The raising of knowledge, national governments have all put into effect a large amount of relevant regulations to limit the discharge capacity of VOCs.For the development in the epoch of complying with,
The positive environmentally friendly direction transformation of car paint, wherein it is solid to include water paint, powdery paints, UV for Environmentally friendly coatings
Change coating and high solid coating, and water paint is one kind wherein with fastest developing speed.
Body of a motor car coating is multilayer system, generally includes epoxy primer layer, epoxy primer layer and top coat layer etc., middle ring
Oxygen priming paint is as the lowermost layer in all coatings, it is necessary to have several functions：
1. excellent adhesive force, can be securely attached on various base materials and easily with the floating coat above it
It is combined, plays important excessive Undertaking effect；
2. excellent fillibility to eliminate the hole eye on coated article surface, lines etc., so as to which even curface be made, makes painting
Smooth, plentiful coating is obtained after finishing paint, improves the clarity and richness of entire paint film, to improve the decoration of entire coating
Property；
3. excellent grinability, so as to which the surface of flat smooth can be obtained after polishing；
4. excellent physical mechanical property, both hard and tough, the protective value being adapted with epoxy primer and finishing coat can be provided；
5. excellent water resistance and endurance；
6. excellent low viscous anti-settling property, if water-base epoxy priming paint viscosity height can accomplish good anti-settling property really, still
When viscosity is too high, the construction diluent to be added in inevitably is added, this will reduce its construction and contain admittedly, cause under fillibility
Drop；
7. excellent application property and resist sagging, when water-base epoxy primer applications are repaired in bus, to its application property and
Resist sagging just has higher requirement；
8. excellent covering power can easily cover ground；
9. excellent storage stability；
10. excellent rate of drying.
There is a small amount of producer selling water-base epoxy priming paint, but by testing its product, find its technology also on the market at present
All of above requirement cannot be met simultaneously.So developing a kind of good water-base epoxy priming paint of comprehensive performance fills up technique
Blank is inevitable trend.
Invention content
Aqueous double-component epoxy primer the object of the present invention is to provide a kind of excellent combination property and preparation method thereof, this
Not only VOC content is low for class epoxy primer, belongs to environmentally friendly product, and it is with excellent adhesive force, fillibility, polishing
Property, excellent physical mechanical property, water resistance and endurance, excellent low viscous anti-settling property, application property and resist sagging are excellent
Covering power, storage stability and rate of drying.
The technical solution adopted by the present invention to solve the technical problems is：
A kind of aqueous double-component epoxy primer with excellent comprehensive performance, the aqueous double-component epoxy primer packet
Component A and component B are included, and the weight ratio of the component A and component B is 6-10:1；
The component A is made of following raw material by weight：
The component B is made of following raw material by weight：
Wherein, the slurry of the component A is made of following raw material by weight：
Preferably, the epoxide equivalent of epoxy resin is 900-1100, such as Cytec-EP 386w, Cytec-EP 384w.
Preferably, polyamine curing agent be aliphatic polybasic amine hardener, hydrogen equivalent 150-250, such as Cytec-EH
623w。
Preferably, the dispersant is the dispersant of the high molecular weight of anionic and the low molecular weight of anionic
Dispersant compounds, the wherein number-average molecular weight ＞ 20000 of the dispersant of high molecular weight, the equal molecule of number of the dispersant of low molecular weight
Amount is 3000-10000.The dispersant of the high molecular weight of the anionic and the dispersant of the low molecular weight of anionic
Weight ratio is 1.5-2:3-3.5.
It is further preferred that the dispersant of the high molecular weight of the anionic is in BYK-190 and BYK-194N
It is at least one.
It is further preferred that the dispersant of the low molecular weight of the anionic has ELEMENTIS FX600, Rohm＆
At least one of fast easy and BYK151 of Haas OROTAN etc..
Preferably, the antifoaming agent be organic silicon antifoaming agent, as BYK-022, TEGO-810, TEGO-901w,
At least one of SURFYNOL 104BC etc.；Wetting agent used in slurry be not foam stabilizing wetting agent, as TEGO-500,
At least one of BYK-800 etc.；Anti-settling agent used in slurry be organo montmorillonite class anti-settling agent, such as ELEMENTIS
At least one of BENTONE LT, DE, BYK LAPONITE RD etc..
Preferably, rust resisting pigment used in slurry be aluminium triphosphate, molybdenum phosphate zinc and one kind in ferric phosphate zinc or
Wherein several mixtures；Pigment used in slurry is titanium dioxide and carbon black, it is further preferred that rutile type titanium white and high pigment
Carbon black.
Preferably, the extender pigment harder for quality of extender pigment used in the slurry extender pigment softer with quality is pressed
Weight ratio is 1-2:1 compounding；Wherein the harder extender pigment of quality is at least one of calcium carbonate and barium sulfate；Quality is softer
Extender pigment be at least one of talcum powder and kaolin.
Preferably, cosolvent used in component A presses 1 for hydrophilic and lipophilic alcohol ethers cosolvent:The ratio of 1-5
Example compounding, wherein hydrophilic cosolvent is that (number-average molecular weight is for polyethylene glycol (number-average molecular weight 400) or polypropylene glycol
400), the boiling point of lipophilic cosolvent is less than 160 DEG C, while evaporation latent heat is less than 530KJ/Kg, as n-amyl alcohol, n-hexyl alcohol and
At least one of 2- methyl -2- butanol；Cosolvent in component B is diacetone alcohol.
Preferably, levelling agent used in component A is the levelling agent of the dual function with base material wetting and levelling, such as
At least one of TEGO240, TEGO425, TEGO450 etc.；The thickener is association type polyurethanes, the poly- ammonia of association type
Type thickener has ELEMENTIS RHEOLATE 299, FX1070, FX1010, Viscoplus 3030, Rohm＆Haas RM-
At least one of 8W etc..
Preferably, adhesion promoter used in component B be silane coupling agent class, such as Glymo；The anti-flash rusting agent
For for amino carboxylic acid salt, such as Flash-x-150.
A kind of method for preparing above-mentioned aqueous double-component epoxy primer, includes the following steps：
(1) it after deionized water, dispersant, wetting agent and antifoaming agent being uniformly dispersed, adds in anti-settling agent, extender pigment, prevent
Become rusty pigment and pigment, and slurry is dispersed under the linear velocity of 8-9m/s uniformly and has mobility, is then ground to carefully with sand mill
30 μm of degree ＜ obtains the slurry of component A；
(2) epoxy resin and cosolvent after mixing, it is slowly added to by slurry made from step (1), dispersion is
After even, add antifoaming agent, levelling agent and thickener, be dispersed with stirring, filtering and discharging up to aqueous double-component epoxy primer group
Part A；
(3) polyamine curing agent, water and cosolvent after mixing, adhesion promoter and anti-flash rusting agent are added in, is stirred
Mix the component B being uniformly dispersed up to aqueous double-component epoxy primer.
The construction method of above-mentioned aqueous double-component epoxy primer：Component A and component B according to 6-10:1 ratio, mixing
Uniformly, deionized water is added to adjust viscosity to 35-40s (applying -4 glasss, 23 DEG C), is sprayed on the tinplate polished, 60 DEG C solid
Change 30min to get the epoxy primer film haveing excellent performance.
Beneficial effects of the present invention
The method that aqueous double-component epoxy primer is prepared in technical solution of the present invention compared with prior art, has following excellent
Point：
1. added in component A the quality such as the harder quality such as a large amount of calcium carbonate, barium sulfate and talcum powder, kaolin compared with
Soft extender pigment, the harder extender pigment of quality can provide excellent fillibility, and the softer filler of quality can provide excellent
Good grinability；
2. after adding a large amount of extender pigment, rust resisting pigment and pigment, in order to which slurry is allowed to have preferable mobility,
The low molecular weight dispersant of anionic must be used, but the ionic dispersant of low molecular weight is unfavorable for high-carbon black pigment
Dispersion and the stabilization of anti-settling agent, so have to cooperate with use with the high molecular weight dispersant of anionic, meanwhile, in order to improve
Grinding efficiency cannot generate a large amount of bubbles in process of lapping, thus the wetting agent added in must not foam stabilizing, and the antifoaming agent added in
It must be organic silicon, there is stronger defoaming capacity；
3. the anti-settling agent added in is co-mulled and made into extender pigment, rust resisting pigment and pigment, it can be made fully to divide in slurry
Dissipate, high thixotropic provided for system, i.e., low viscous anti-settling property, while add in anionic high molecular weight dispersant can help it is anti-settling
Agent is stablized in system, and anti-settling effect is lost without reuniting during standing；
4. the levelling agent added in can soak base material, eliminates shrinkage cavity and help the quick levelling of paint film；The thickener of addition
Excellent storage stability, application property and resist sagging can be provided；Have in the cosolvent of addition it is hydrophilic also have hydrophobic, protect
Card component A and component B has better compatibility, while can improve the freeze-thaw stability of component A and the surface drying speed of paint film.
Description of the drawings
Fig. 1 is the charge stable schematic diagram of organo montmorillonite class anti-settling agent.
Specific embodiment
The present invention is described further with reference to embodiments, however, it is not limited to this.
Embodiment 1
1. the preparation of aqueous double-component epoxy primer component A
The formula of aqueous double-component epoxy primer component A is as shown in table 1, and preparation process is as follows：1. deionization
Water is added in stirred tank, BYK-190, FX600, TEGO-500 and TEGO-901w is then added in while stirring, until it is uniformly dispersed
Afterwards, DE and different types of extender pigment are continuously added, after extender pigment is fully dispersed, is eventually adding aluminium triphosphate, phosphorus
Sour iron zinc, R-706 and Raven-3500,15min is stirred under the linear velocity of 8-9m/s；It is sanded 2. the slurry after stirring is injected
Machine grinds 45min-1h, treats 30 μm of its fineness ＜ to get to component A slurries；3. EP 386w, polyethylene glycol, n-hexyl alcohol are mixed
After closing uniformly, ground slurry is slowly added to, adds in BYK-022, TEGO-240 and FX1070 after mixing, stirring is equal
It is even, filtering is stood to get to the component A of aqueous double-component epoxy primer.
2. the preparation of aqueous double-component epoxy primer component B
EH 623w, deionized water and diacetone alcohol after mixing, Glymo and Flash-x-150, stirring point are added in
It dissipates uniformly up to the component B of aqueous double-component epoxy primer.
3. the preparation of aqueous double-component epoxy primer film
Component A and component B according to 8:Then 1 ratio mixing adjusts viscosity to 35-40s (paintings -4 with deionized water
Cup, 23 DEG C), it is sprayed on the tinplate polished, cures 30min (similarly hereinafter) at 60 DEG C to get the epoxy bottom haveing excellent performance
Paint film.
The performance of aqueous double-component epoxy primer prepared by formula 1, formula 2, formula 3 and formula 4 is as shown in table 2.By
Table is it is found that the storage stability of formula 1 and formula 2, grinability, fillibility, covering power, adhesive force, flexibility, water resistance and resistance to
It is all qualified to change performance；The fillibility of formula 3 is more slightly worse than formula 1 and formula 2, other performances and formula 1 and formula 2 are quite；Formula 4
Storage stability it is unqualified, other performances are all qualified.This is because relative to barium sulfate, the fillibility of mica powder is poor, institute
It is poor with the fillibility of formula 3, and zinc stearate can not disperse well under this dispersant package, so causing to be formulated
4 storage stability is unqualified.Therefore, the preferred calcium carbonate of extender pigment, barium sulfate, talcum powder and kaolin.
1 embodiment 1 of table changes the basic recipe that extender pigment type prepares aqueous double-component epoxy primer
The relationship of 2 embodiment of table, 1 extender pigment type and epoxy primer performance
1. the scraping with atomic ash layer on tinplate sprays epoxy primer after polishing, its fillibility is tested, similarly hereinafter；
2. black and white lattice test covering power is pasted, similarly hereinafter.
Embodiment 2
Table 3 is embodiment 2 in the case where ensureing that unclassified stores is constant, changes Dispersant types and prepares water-base epoxy priming paint
The formula that feeds intake, formula number is followed successively by 5,6,7 and 8.The technical process of aqueous double-component epoxy primer is prepared by embodiment 1
4 kinds of epoxy primers that number shown in table 3 is 5~8 are prepared, the technical process that epoxy primer film is prepared by embodiment 1 prepares paint film.
The performance of aqueous double-component epoxy primer prepared by formula 5, formula 6, formula 7 and formula 8 is as shown in table 4.By
Watch is it is found that when the dispersant package that (BYK-190+FX600) or (the fast easily+BYK-151 of BYK-194N+OROTAN) are used in formula
When, aqueous double-component epoxy primer have excellent storage stability, grinability, fillibility, covering power, adhesive force, flexibility,
Water resistance and endurance energy；When the dispersant package for selecting (FX365+FX600) or (BYK-192+FX600), aqueous double groups
The storage stability of part epoxy primer is unqualified, is mainly manifested in after storage and the anti-thick, sedimentation of grain size occurs and divide water, viscosity raising,
And have significantly floating black.This is because the anionic dispersing agent of low molecular weight can with the inorganic extender pigment of rapid dispersion,
Rust resisting pigment and titanium dioxide, while assign slurry good mobility, the anionic dispersing agent of high molecular weight can disperse high color
Plain carbon black and anti-settling agent, and since charge effect and molecular weight are larger, effective steric hindrance can be provided to carbon black and prevented
Heavy agent helps carbon black and anti-settling agent to stablize.The molecular weight of BYK-190 and BYK-194N is than FX365 bigger, and BYK-192 belongs to
Non-ionic dispersing agent is not suitable for disperse black carbon, so the aqueous double-component epoxy prepared by BYK-190 and BYK-194N
Priming paint comprehensive performance is best.Accordingly, it is preferred that dispersant package is (BYK-190+FX600) or (BYK-194N+OROTAN is easy soon
+BYK-151)。
3 embodiment 2 of table changes the basic recipe that Dispersant types prepare aqueous double-component epoxy primer
4 embodiment of table, 2 Dispersant types and the relationship of epoxy primer performance
Embodiment 3
Table 5 is embodiment 3 in the case where ensureing that unclassified stores is constant, changes dispersive agent ratio and prepares water-base epoxy priming paint
The formula that feeds intake, formula number is followed successively by 9,10,11 and 12.The technique for preparing aqueous double-component epoxy primer by embodiment 1
Process prepares 4 kinds of epoxy primers that number shown in table 5 is 9~12, prepared by the technical process that epoxy primer film is prepared by embodiment 1
Paint film.
The performance of aqueous double-component epoxy primer prepared by formula 9, formula 10, formula 11 and formula 12 is as shown in table 6.
As seen from table, when the proportioning of dispersant B YK-190 and FX600 are 0.5:When 4.5, aqueous double-component epoxy primer has excellent
Grinability, fillibility, covering power, adhesive force, flexibility and endurance energy, but its storage stability and water resistance are unqualified；When
The proportioning of dispersant B YK-190 and FX600 are 1.5:3.5 and 2:When 3, aqueous double-component epoxy primer has excellent items
Can, but be 2 when matching:When 3, the viscosity of slurry is slightly larger, influences grinding efficiency；When the proportioning of dispersant B YK-190 and FX600
It is 4.5:When 0.5, component A slurry mobility is too poor, can not be ground.This is because the moon of BYK-190 as high molecular weight
Ionic dispersant, there are two advantages for tool：1. steric hindrance is big, good to the stability of extender pigment, rust resisting pigment and pigment；
2. water-tolerant.FX600 also has as the anionic dispersing agent of low molecular weight there are two advantage：It 1., can be quick than more hydrophilic
It is moved in water phase, it can rapid dispersion extender pigment, rust resisting pigment and pigment；2. strand is shorter, can be provided for slurry good
Good mobility.When the dosage of FX600 is 4.5%, and the dosage of BYK-190 is 0.5%, the stability of water-base epoxy priming paint
It is affirmed with water resistance not all right；The dosage of FX600 be 3%, and the dosage of BYK-190 be 2% when, the strand of BYK-190 has gently
Micro- winding, the viscosity for leading to slurry are slightly higher；When BYK-190 dosages are 4.5%, and the dosage of FX600 is 0.5%, BYK-190
The winding of strand height, component A slurry mobility is too poor, it is impossible to meet the feedstock viscosity of sand mill.Accordingly, it is preferred that BYK-
The ratio of 190 and FX600 is 1.5:3.5.
5 embodiment 3 of table changes the basic recipe that dispersive agent ratio prepares aqueous double-component epoxy primer
The relationship of 6 embodiment of table, 3 dispersive agent ratio and epoxy primer performance
Embodiment 4
Table 7 is embodiment 4 in the case where ensureing that unclassified stores is constant, changes anti-settling agent type and prepares water-base epoxy priming paint
The formula that feeds intake, formula number is followed successively by 13,14,15 and 16.The technique for preparing aqueous double-component epoxy primer by embodiment 1
Process prepares 4 kinds of epoxy primers that number shown in table 7 is 13~16, and the technical process system of epoxy primer film is prepared by embodiment 1
Standby paint film.
Performance such as 8 institute of table of aqueous double-component epoxy primer prepared by formula 13, formula 14, formula 15 and formula 16
Show.As seen from table, when select DE or RD as anti-settling agent when, aqueous double-component epoxy primer with excellent storage stability,
Grinability, fillibility, covering power, adhesive force, flexibility, water resistance and endurance energy；It is aqueous when selecting A200 or FX1070
The storage stability of two component epoxy priming paint is unqualified and application property is poor, be mainly manifested in after storage there is sedimentation, divide water and
Floating black, application property difference is fuel-displaced when being mainly reflected in spraying to have some setbacks, easy sagging.This is because DE and RD is as organo montmorillonite class
Anti-settling agent when participation is co-mulled and made into, may be uniformly dispersed in extender pigment, rust resisting pigment and pigment, then it is electric in water
From so as on surface charge layer occur, passing through the electrostatic repulsion of charge layer and the steric hindrance constitution of macromolcular dispersant
Pigment, rust resisting pigment and pigment stabilizer in system, schematic diagram as shown in Figure 1, meanwhile, if this rock-steady structure is by external force
, can be by the fast quick-recovery of charge effect after destruction, this just provides high thixotropic and good application property for system；
A200 belongs to silica-based anti-settling agent, and anti-settling mechanism is by interparticle hydrogen bond action, it is well known that the active force of charge
Can be much larger than hydrogen bond active force, so the anti-settling property of A200 be not so good as DE or RD, the thixotropy of epoxy primer prepared therefrom and
Resist sagging is also weaker；FX1070 belongs to the thickener of association type polyurethane type, does not have charge effect, also makees without hydrogen bond
With so its anti-settling property is not so good as DE, RD and A200, the thixotropy and resist sagging of epoxy primer prepared therefrom are most weak.Therefore,
Preferred anti-settling agent is DE or RD.
7 embodiment 4 of table changes the basic recipe that anti-settling agent type prepares aqueous double-component epoxy primer
The relationship of 8 embodiment of table, 4 anti-settling agent type and epoxy primer performance
Embodiment 5
Table 9 is embodiment 5 in the case where ensureing that unclassified stores is constant, changes anti-settling agent dosage and prepares water-base epoxy priming paint
The formula that feeds intake, formula number is followed successively by 17,18,19 and 20.The technique for preparing aqueous double-component epoxy primer by embodiment 1
Process prepares 4 kinds of epoxy primers that number shown in table 9 is 17~20, and the technical process system of epoxy primer film is prepared by embodiment 1
Standby paint film.
Performance such as 10 institute of table of aqueous double-component epoxy primer prepared by formula 17, formula 18, formula 19 and formula 20
Show.As seen from table, when DE dosages are 0.3%, water-base epoxy priming paint has excellent grinability, fillibility, covering power, attachment
Power, flexibility, water resistance and endurance energy, but its storage stability is unqualified, is mainly manifested in after storing to occur settling and divides water；
When DE dosages are 0.6%, water-base epoxy priming paint has excellent properties；When DE dosages are 0.9%, water-base epoxy bottom
Paint has excellent storage stability, grinability, fillibility, covering power, adhesive force, flexibility and endurance energy, but its is water-fast
Property is unqualified, and the viscosity of component A slurries is excessive, affects production efficiency；When DE dosages are 1.2%, component A slurries are glued
Degree is very big, beyond the grinding viscosity of sand mill.Accordingly, it is preferred that anti-settling agent DE dosages are 0.6%.
9 embodiment 5 of table changes the basic recipe that anti-settling agent dosage prepares aqueous double-component epoxy primer
The relationship of 10 embodiment of table, 5 anti-settling agent dosage and epoxy primer performance
Embodiment 6
Table 11 is embodiment 6 in the case where ensureing that unclassified stores is constant, change component A cosolvent type prepare it is aqueous
The formula that feeds intake of epoxy primer, formula number are followed successively by 17,18,19 and 20.Aqueous double-component epoxy bottom is prepared by embodiment 1
The technical process of paint prepares 4 kinds of epoxy primers that number shown in table 11 is 21~24, and the work of epoxy primer film is prepared by embodiment 1
Skill process prepares paint film.
Performance such as 12 institute of table of aqueous double-component epoxy primer prepared by formula 21, formula 22, formula 23 and formula 24
Show.As seen from table, the paint film property of 4 formulas is all qualified, but the rate of drying of formula 21 and formula 24 is significantly than formula 22
It is slow with formula 23.This is because the boiling point of water is 100 DEG C, evaporation latent heat is 588KJ/Kg, and the boiling point of n-butanol is 117.7 DEG C,
Evaporation latent heat is 591.5KJ/Kg, and the boiling point of n-heptanol is 176.3 DEG C, and evaporation latent heat is 1837.2KJ/Kg, the boiling point of n-amyl alcohol
It is 138 DEG C, evaporation latent heat is 504.8KJ/Kg, and the boiling point of n-hexyl alcohol is 157.1 DEG C, and evaporation latent heat is 448.7KJ/Kg, although
The boiling point of n-amyl alcohol and n-hexyl alcohol ratio water is high, but its evaporation latent heat is more much lower than water, and the boiling point of n-butanol and n-heptanol and
Evaporation latent heat is all higher than water, so, n-amyl alcohol and n-hexyl alcohol can faster volatilize under identical environment temperature than water, so as to water
Discharge paint film faster, while the presence of polyethylene glycol on the one hand can be with the stability of guarantee system, it on the other hand can be significantly
Extend the open hour of paint film, the moisture content in paint film is made to volatilize more thorough.Accordingly, it is preferred that aqueous double-component epoxy primer
Cosolvent is polyethylene glycol+n-amyl alcohol or polyethylene glycol+n-hexyl alcohol.
11 embodiment 6 of table changes the basic recipe that component A cosolvent types prepare aqueous double-component epoxy primer
The relationship of 12 embodiment of table, 6 component A cosolvents type and epoxy primer performance
Note：The time of the complete dry tack free of paint film is made to be used as surface drying time by blowing, environment temperature is 25 DEG C, and humidity is
75%.
Claims (9)
1. a kind of aqueous double-component epoxy primer, which is characterized in that the aqueous double-component epoxy primer includes component A and group
Part B, and the weight ratio of the component A and component B is 6-10:1；
The component A is made of following raw material by weight：
The component B is made of following raw material by weight：
Slurry in the component A is made of following raw material by weight：
The dispersant is compounded for the dispersant of the high molecular weight of anionic and the dispersant of the low molecular weight of anionic,
The wherein number-average molecular weight ＞ 20000 of the dispersant of high molecular weight, the number-average molecular weight of the dispersant of low molecular weight is 3000-
10000；
The weight ratio of the dispersant of the high molecular weight of the anionic and the dispersant of the low molecular weight of anionic is
1.5-2:3-3.5；
The extender pigment is the harder extender pigment of quality and the softer extender pigment of quality is 1-2 by weight:1 is multiple
Match；Wherein the harder extender pigment of quality is at least one of calcium carbonate and barium sulfate；The softer extender pigment of quality is slides
At least one of mountain flour and kaolin；
The cosolvent of the component A is that hydrophilic and lipophilic alcohol ethers cosolvent is 1 in mass ratio:The ratio of 1-5
Compounding, wherein hydrophilic cosolvent is polyethylene glycol or polypropylene glycol, the boiling point of lipophilic cosolvent is less than 160 DEG C, together
When evaporation latent heat be less than 530KJ/Kg；The cosolvent of the component B is diacetone alcohol；
The rust resisting pigment is aluminium triphosphate, molybdenum phosphate zinc and one kind in ferric phosphate zinc or wherein several mixtures；
The pigment is titanium dioxide and carbon black.
2. aqueous double-component epoxy primer according to claim 1, which is characterized in that the antifoaming agent is organic silicon
Antifoaming agent.
3. aqueous double-component epoxy primer according to claim 1, which is characterized in that the wetting agent is not foam stabilizing
Wetting agent；The anti-settling agent is organo montmorillonite class anti-settling agent.
4. aqueous double-component epoxy primer according to claim 1, which is characterized in that the epoxy of the epoxy resin is worked as
It measures as 900-1100.
5. aqueous double-component epoxy primer according to claim 1, which is characterized in that the polyamine curing agent is fat
Fat race polyamine curing agent, hydrogen equivalent 150-250.
6. aqueous double-component epoxy primer according to claim 1, which is characterized in that the levelling agent is with base material
The levelling agent of the dual function of wetting and levelling.
7. aqueous double-component epoxy primer according to claim 1, which is characterized in that the thickener is that association type gathers
Ammonia type thickener；The adhesion promoter is silane coupling agent class.
8. aqueous double-component epoxy primer according to claim 1, which is characterized in that the anti-flash rusting agent is aminocarboxylic
Barbiturates.
A kind of 9. method of aqueous double-component epoxy primer for preparing any one of claim 1-8, which is characterized in that including with
Lower step：
(1) after deionized water, dispersant, wetting agent and antifoaming agent being uniformly dispersed, anti-settling agent, extender pigment, antirust face are added in
Material and pigment are dispersed to slurry uniformly under the linear velocity of 8-9m/s and have mobility, is then ground to fineness ＜ with sand mill
30 μm obtain the slurry of component A；
(2) epoxy resin and cosolvent after mixing, it is slowly added to by slurry made from step (1), after being uniformly dispersed,
Add antifoaming agent, levelling agent and thickener, be dispersed with stirring, filtering and discharging up to aqueous double-component epoxy primer component A；
(3) polyamine curing agent, deionized water and cosolvent after mixing, adhesion promoter and anti-flash rusting agent are added in,
It is dispersed with stirring uniformly up to the component B of aqueous double-component epoxy primer.
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| Publication number | Priority date | Publication date | Assignee | Title |
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| CN106634385A (en) * | 2016-10-12 | 2017-05-10 | 南雄市翔远化学科技有限公司 | Waterborne two-component epoxy primer, and preparation method and application thereof |
| CN106675334A (en) * | 2016-12-21 | 2017-05-17 | 东来涂料技术（上海）有限公司 | Safe type aqueous bicomponent epoxy primer and preparation method thereof |
| CN106811000A (en) * | 2017-01-11 | 2017-06-09 | 合肥英索莱特新材料科技有限公司 | Double-component aqueous corrosion-resistant epoxy paint |
| CN106833289A (en) * | 2017-03-10 | 2017-06-13 | 津正颜科技（天津）有限公司 | A kind of double-component aqueous epoxy primer and its production technology |
| CN109181470A (en) * | 2018-07-25 | 2019-01-11 | 湖北诗璐化工涂料股份有限公司 | Aqueous Chelation rust-proof primer and preparation method and application method |
| CN109266168A (en) * | 2018-09-05 | 2019-01-25 | 山东七维新材料有限公司 | A kind of high-performance water-based two-component epoxy primer and preparation method |
| CN110003763B (en) * | 2019-03-01 | 2021-07-23 | 广东华润涂料有限公司 | Two-component water-based epoxy resin paint |
| CN110294995A (en) * | 2019-06-29 | 2019-10-01 | 江苏亚一智能装备有限公司 | A kind of vehicle spray painting LP blades primer base and preparation method |
| CN112552777A (en) * | 2019-09-26 | 2021-03-26 | 雅图高新材料有限公司 | Water-based epoxy primer for wet-on-wet process and preparation method thereof |
| CN113736294B (en) * | 2020-05-27 | 2022-04-29 | 廊坊立邦涂料有限公司 | Inorganic binder suitable for automobile coating and preparation method thereof |
| CN112341904A (en) * | 2020-11-23 | 2021-02-09 | 湘江涂料科技有限公司 | Quick-drying water-based epoxy anti-corrosion primer and preparation method thereof |
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| CN1220737C (en) * | 2003-05-16 | 2005-09-28 | 广州秀珀化工有限公司 | Room temperature solidification water epoxy paint and its production method |
| CN1752163A (en) * | 2005-10-20 | 2006-03-29 | 同济大学 | A kind of aqueous epoxide resin paint and preparation method thereof |
| CN103951773B (en) * | 2013-04-22 | 2017-04-12 | 中科院广州化学有限公司 | Long-side-chain fluorine-containing acrylic epoxy resin and coating prepared from resin as raw material |
| CN103409040A (en) * | 2013-08-14 | 2013-11-27 | 张家港保税区金企鹅贸易有限公司 | Waterborne epoxy zinc-rich primer |
| CN105017921B (en) * | 2014-04-16 | 2018-02-02 | 镇江德马化工有限公司 | A kind of oiliness changes water-base epoxy anti-corrosive primer and preparation method thereof |
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Address after: The two district 529700 in Guangdong province Jiangmen city Heshan City, the ancient town of labor three industrial zone Patentee after: Yatu high tech materials Co., Ltd Address before: The two district 529700 in Guangdong province Jiangmen city Heshan City, the ancient town of labor three industrial zone Patentee before: GUANGDONG YATU CHEMICAL CO., LTD. |