CN105949943A - Automobile water-based two-component epoxy primer with excellent performance and preparation method thereof - Google Patents
Automobile water-based two-component epoxy primer with excellent performance and preparation method thereof Download PDFInfo
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- CN105949943A CN105949943A CN201610294687.3A CN201610294687A CN105949943A CN 105949943 A CN105949943 A CN 105949943A CN 201610294687 A CN201610294687 A CN 201610294687A CN 105949943 A CN105949943 A CN 105949943A
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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
- C09D7/40—Additives
- 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 an automobile water-based two-component epoxy primer with excellent performance and a preparation method thereof. The water-based epoxy primer involved in the invention is composed of a component A and a component B. The component A is composed of epoxy resin, a cosolvent, powder slurry and assistants, wherein the powder slurry includes deionized water, additives, extender pigment, anti-rust pigment and pigment. The component B contains a polyamine curing agent, deionized water, a cosolvent and assistants. The preparation method includes: conducting charging according to the powder slurry formula of the component A, then performing high speed dispersion for 15min, then bringing the materials into a sand mill to conduct grinding to fineness of less than 30 micrometers to obtain the powder slurry, mixing epoxy resin, the cosolvent, the powder slurry and the assistants evenly to obtain the component A, mixing the component A with the components B in certain proportion, adding deionized water to adjust viscosity, and carrying out spray coating to obtain an epoxy primer film. The water-based epoxy primer provided by the invention not only realizes aquation of automobile epoxy primer and great reduction of the VOC content, but also has excellent comprehensive performance.
Description
Technical field
The present invention relates to car paint technical field, be specifically related at the bottom of the aqueous double-component epoxy of a kind of excellent combination property
Paint and preparation method thereof.
Background technology
The car paint of China is still based on solvent-borne type at present, and a large amount of VOCs (VOCs) are at coating process
In ecological environment caused serious pollution, also human health is brought harm greatly simultaneously.Along with people's environmental protection is anticipated
The raising known, national governments have all put into effect a large amount of relevant regulation to limit the discharge capacity of VOCs.For the development in the epoch of complying with,
The environmentally friendly direction of car paint forward changes, and wherein to include water paint, powdery paints, UV solid for Environmentally friendly coatings
Change coating and high solid coating, and water paint is a class the most 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., its medium ring
Oxygen priming paint is as the lowermost layer in all coatings, it is necessary to possess several function:
The most excellent adhesive force, can be securely attached on various base material, again can easily with it above floating coat
Combine, play important excessive undertaking effect；
The most excellent fillibility, to eliminate the eye on coated article surface, lines etc., thus makes even curface, makes painting
Obtain smooth, plentiful coating after finishing paint, improve clarity and the richness of whole paint film, to improve the decoration of whole coating
Property；
The most excellent grinability, thus the surface of flat smooth after polishing, can be obtained；
The most excellent physical and mechanical properties, both hard and tough, it is provided that the protective value adapted with epoxy primer and finish paint；
The most excellent resistance to water and endurance；
The most excellent low viscous anti-settling property, if water-base epoxy priming paint viscosity height can accomplish good anti-settling property really, but
When viscosity is the highest, diluent to be added of constructing inevitably is added, and this will reduce its construction and admittedly contain, and causes under fillibility
Fall；
The most excellent application property and resist sagging, when water-base epoxy primer applications is repaired in big bus, to its application property and
Resist sagging just has higher requirement；
The most excellent covering power, it is possible to easily cover ground；
The most excellent storage stability；
The most excellent rate of drying.
There is a small amount of producer selling water-base epoxy priming paint on the market at present, but by testing its product, find its technology also
All above requirement can not be met simultaneously.So, technique filled up by the water-base epoxy priming paint developing a kind of combination property good
Blank is inevitable trend.
Summary of the invention
Aqueous double-component epoxy primer that it is an object of the invention to provide a kind of excellent combination property and preparation method thereof, this
Class epoxy primer not only VOC content is low, belongs to environmentally friendly product, and it has excellent adhesive force, fillibility, polishing
Property, excellent physical and mechanical properties, resistance to water and endurance, excellent low viscous anti-settling property, application property and resist sagging, excellent
Covering power, storage stability and rate of drying.
The technical solution adopted for the present invention to solve the technical problems is:
A kind of aqueous double-component epoxy primer of the combination property with excellence, described aqueous double-component epoxy primer bag
Include component A and component B, and the weight ratio of described component A and component B is 6-10:1；
Described component A is made up of following raw material by weight:
Described component B is made up of following raw material by weight:
Wherein, the slurry of described component A is made up of following raw material by weight:
Preferably, the epoxide equivalent of epoxy resin is 900-1100, such as Cytec-EP 386w, Cytec-EP 384w etc..
Preferably, polyamine curing agent is aliphatic polybasic amine hardener, and its hydrogen equivalent is 150-250, such as Cytec-EH
623w。
Preferably, described dispersant is dispersant and the low-molecular-weight of anionic of the high molecular of anionic
Dispersant compounds, wherein number-average molecular weight ＞ 20000 of the dispersant of high molecular, the equal molecule of number of the dispersant of low-molecular-weight
Amount is 3000-10000.The dispersant of the dispersant of the high molecular of described anionic and 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 of described anionic is in BYK-190 and BYK-194N
At least one.
It is further preferred that the dispersant of the low-molecular-weight of described anionic has ELEMENTIS FX600, Rohm&
Haas OROTAN at least one easily and in BYK151 etc. soon.
Preferably, described defoamer is silicone defoamer, as BYK-022, TEGO-810, TEGO-901w,
At least one in SURFYNOL 104BC etc.；Wetting agent used in slurry is the wetting agent of unstable bubble, as TEGO-500,
At least one in BYK-800 etc.；Anti-settling agent used in slurry is organo montmorillonite class anti-settling agent, such as ELEMENTIS
At least one in BENTONE LT, DE, BYK LAPONITE RD etc..
Preferably, rust resisting pigment used in slurry be the one in aluminium triphosphate, molybdenum phosphate zinc and iron phosphate zinc or
The most several mixture；Pigment used in slurry is titanium dioxide and white carbon black, it is further preferred that Rutile type titanium dioxide and high pigment
White carbon black.
Preferably, extender pigment used in slurry be extender pigment that the harder extender pigment of quality is softer with quality by
Weight ratio is that 1-2:1 compounds；The extender pigment that wherein quality is harder is at least one in calcium carbonate and barium sulfate；Quality is softer
Extender pigment be at least one in Pulvis Talci and Kaolin.
Preferably, cosolvent used in component A is that hydrophilic and oil loving alcohol ethers cosolvent is by the ratio of 1:1-5
Example compounds, and the most hydrophilic cosolvent is that (number-average molecular weight is for Polyethylene Glycol (number-average molecular weight is 400) or polypropylene glycol
400), the boiling point of oil loving cosolvent be less than 160 DEG C, simultaneously evaporation latent heat be less than 530KJ/Kg, as n-amyl alcohol, hexanol and
At least one in 2-methyl-2-butanol；Cosolvent in component B is DAA.
Preferably, levelling agent used in component A is the levelling agent of the dual-use function with base material moistening and levelling, as
At least one in TEGO240, TEGO425, TEGO450 etc.；Described thickening agent 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 in 8W etc..
Preferably, adhesion promoter used in component B is silane coupler class, such as Glymo；Described anti-sudden strain of a muscle rust agent
For for amino carboxylic acid salt, such as Flash-x-150.
A kind of method preparing above-mentioned aqueous double-component epoxy primer, comprises the following steps:
(1), after deionized water, dispersant, wetting agent and defoamer being uniformly dispersed, add anti-settling agent, extender pigment, prevent
Rust pigment and pigment, being dispersed to slurry under the linear velocity of 8-9m/s uniformly and has mobility, is then ground to carefully with sand mill
Degree ＜ 30 μm i.e. obtains the slurry of component A；
(2) after epoxy resin and cosolvent mix homogeneously, being slowly added to the slurry prepared through step (1), dispersion is all
After even, add defoamer, levelling agent and thickening agent, dispersed with stirring, filter discharging and i.e. obtain the group of aqueous double-component epoxy primer
Part A；
(3) after polyamine curing agent, water and cosolvent mix homogeneously, add adhesion promoter and anti-sudden strain of a muscle rust agent, stir
Mixing is uniformly dispersed i.e. obtains the component B of aqueous double-component epoxy primer.
The construction method of above-mentioned aqueous double-component epoxy primer: component A and component B according to the ratio of 6-10:1, mix
Uniformly, add deionized water regulation viscosity to 35-40s (being coated with-4 glasss, 23 DEG C), be sprayed on the tinplate polished, 60 DEG C consolidate
Change 30min, obtain the epoxy primer film of excellent performance.
Beneficial effects of the present invention
Technical solution of the present invention is prepared the method for aqueous double-component epoxy primer compared with prior art, have following excellent
Point:
1. component A add the quality such as substantial amounts of calcium carbonate, barium sulfate are harder and the quality such as Pulvis Talci, Kaolin relatively
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 substantial amounts of extender pigment, rust resisting pigment and pigment, in order to allow slurry 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 is stablized with anti-settling agent, so have to collaborative with the high molecular weight dispersant of anionic use, meanwhile, in order to improve
Grinding efficiency, can not produce a large amount of bubble in process of lapping, so the wetting agent added must unstable steep, and the defoamer added
Must be silicone, there is stronger defoaming capacity；
3. the anti-settling agent added is co-mulled and made into extender pigment, rust resisting pigment and pigment, it is possible to make it fully divide in slurry
Dissipate, provide high thixotropic, the lowest viscous anti-settling property for system, be simultaneously introduced anionic high molecular weight dispersant and can help anti-settling
Agent is stable in system, loses anti-settling effect without reuniting during standing；
4. the levelling agent added can moistening base material, eliminate shrinkage cavity, the quick levelling of paint film can be helped again；The thickening agent added
Excellent storage stability, application property and resist sagging can be provided；Having in the cosolvent added hydrophilic also has hydrophobic, protects
Card component A and component B has more preferable compatibility, can improve the freeze-thaw stability of component A and the surface drying speed of paint film simultaneously.
Accompanying drawing explanation
Fig. 1 is the charge stable schematic diagram of organo montmorillonite class anti-settling agent.
Detailed description of the invention
Below in conjunction with embodiment, the present invention is described further, but is not limited thereto.
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 its preparation process is as follows: 1. deionization
Water adds in stirred tank, adds BYK-190, FX600, TEGO-500 and TEGO-901w the most while stirring, is uniformly dispersed to it
After, continuously add DE and different types of extender pigment, after extender pigment is fully dispersed, be eventually adding aluminium triphosphate, phosphorus
Acid ferrum zinc, R-706 and Raven-3500, stir 15min under the linear velocity of 8-9m/s；2. the slurry after stirring is injected sand milling
Machine, grinds 45min-1h, treats its fineness ＜ 30 μm, i.e. obtain component A slurry；3. EP 386w, Polyethylene Glycol, hexanol are mixed
After closing uniformly, being slowly added to ground slurry, add BYK-022, TEGO-240 and FX1070 after mix homogeneously, stirring is all
Even, stand and filter, i.e. obtain the component A of aqueous double-component epoxy primer.
2. the preparation of aqueous double-component epoxy primer component B
After EH 623w, deionized water and DAA mix homogeneously, add Glymo and Flash-x-150, stirring point
Dissipate the component B uniformly i.e. obtaining aqueous double-component epoxy primer.
3. the preparation of aqueous double-component epoxy primer film
Component A and component B is mixed according to the ratio of 8:1, then (is coated with-4 by deionized water regulation viscosity to 35-40s
Cup, 23 DEG C), it is sprayed on the tinplate polished, solidifies 30min (lower same) at 60 DEG C, obtain at the bottom of the epoxy of excellent performance
Paint film.
The performance of the aqueous double-component epoxy primer prepared by formula 1, formula 2, formula 3 and formula 4 is as shown in table 2.By
Table understands, formula 1 and the storage stability of formula 2, grinability, fillibility, covering power, adhesive force, pliability, resistance to water and resistance to
Change performance the most qualified；The fillibility of formula 3 is more slightly worse than formula 1 and formula 2, and other performances are suitable with formula 1 and formula 2；Formula 4
Storage stability defective, other performances are the most qualified.This is because, relative to barium sulfate, the fillibility of mica powder is poor, institute
Fillibility with formula 3 is poor, and zinc stearate can not well disperse under this dispersant package, so causing formula
The storage stability of 4 is defective.Therefore, the preferred calcium carbonate of extender pigment, barium sulfate, Pulvis Talci and Kaolin.
Table 1 embodiment 1 changes extender pigment type and prepares the basic recipe of aqueous double-component epoxy primer
Table 2 embodiment 1 extender pigment type and the relation of epoxy primer performance
1. scraping with atomic ash layer on tinplate, sprays epoxy primer after polishing, test its fillibility, lower same；
2. patch black and white lattice test covering power, lower same.
Embodiment 2
Table 3 is embodiment 2 in the case of ensureing that unclassified stores is constant, changes Dispersant types and prepares water-base epoxy priming paint
The formula that feeds intake, its 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
Preparing 4 kinds of epoxy primers of shown in table 3 numbered 5～8, the technical process preparing epoxy primer film by embodiment 1 prepares paint film.
The performance of the aqueous double-component epoxy primer prepared by formula 5, formula 6, formula 7 and formula 8 is as shown in table 4.By
Table understands, when using (BYK-190+FX600) or the dispersant package of (BYK-194N+OROTAN easy+BYK-151 soon) in formula
Time, aqueous double-component epoxy primer have excellence storage stability, grinability, fillibility, covering power, adhesive force, pliability,
Resistance to water and endurance energy；When selecting the dispersant package of (FX365+FX600) or (BYK-192+FX600), the double group of aqueous
The storage stability of part epoxy primer is defective, occurs that particle diameter is anti-thick, settles and divide a water, viscosity to raise after being mainly manifested in storage,
And have the most 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, give the mobility that slurry is good simultaneously, and the anionic dispersing agent of high molecular can disperse high color
Element white carbon black and anti-settling agent, and owing to charge effect and molecular weight are bigger, it is provided that the most sterically hindered to white carbon black with anti-
Heavy agent, helps white carbon black and anti-settling agent stable.Molecular weight ratio FX365 of BYK-190 and BYK-194N is 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 combination property is best.Accordingly, it is preferred that dispersant package is (BYK-190+FX600) or (BYK-194N+OROTAN is the easiest
+BYK-151)。
Table 3 embodiment 2 changes Dispersant types and prepares the basic recipe of aqueous double-component epoxy primer
Table 4 embodiment 2 Dispersant types and the relation of epoxy primer performance
Embodiment 3
Table 5 is embodiment 3 in the case of ensureing that unclassified stores is constant, changes dispersive agent ratio and prepares water-base epoxy priming paint
The formula that feeds intake, its formula number is followed successively by 9,10,11 and 12.The technique preparing aqueous double-component epoxy primer by embodiment 1
Process prepares 4 kinds of epoxy primers of shown in table 5 numbered 9～12, prepared by the technical process preparing epoxy primer film by embodiment 1
Paint film.
The performance of the 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 Yu FX600 is 0.5:4.5, aqueous double-component epoxy primer has excellence
Grinability, fillibility, covering power, adhesive force, pliability and endurance energy, but its storage stability and resistance to water are defective；When
When the proportioning of dispersant B YK-190 Yu FX600 is 1.5:3.5 and 2:3, aqueous double-component epoxy primer has every property of excellence
Can, but when proportioning is 2:3, the viscosity of slurry is slightly larger, affects grinding efficiency；Proportioning as dispersant B YK-190 Yu FX600
During for 4.5:0.5, component A slurry mobility is the poorest, it is impossible to be ground.This is because, BYK-190 is as the moon of high molecular
Ionic dispersant, it has two advantages: the most sterically hindered greatly, the good stability to extender pigment, rust resisting pigment and pigment；
2. water-tolerant.FX600 also has two advantages as the anionic dispersing agent of low-molecular-weight: 1. ratio is more hydrophilic, can be quickly
Aqueous phase moves, energy rapid dispersion extender pigment, rust resisting pigment and pigment；2. strand is shorter, can be that slurry provides good
Good mobility.When the consumption of FX600 is 4.5%, and when the consumption of BYK-190 is 0.5%, the stability of water-base epoxy priming paint
The most not all right with resistance to water；The consumption of FX600 is 3%, and when the consumption of BYK-190 is 2%, the strand of BYK-190 has gently
Micro-winding, the viscosity causing slurry is slightly higher；When BYK-190 consumption is 4.5%, and when the consumption of FX600 is 0.5%, BYK-190
Strand height be wound around, component A slurry mobility is the poorest, 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.
Table 5 embodiment 3 changes dispersive agent ratio and prepares the basic recipe of aqueous double-component epoxy primer
Table 6 embodiment 3 dispersive agent ratio and the relation of epoxy primer performance
Embodiment 4
Table 7 is embodiment 4 in the case of ensureing that unclassified stores is constant, changes anti-settling agent type and prepares water-base epoxy priming paint
The formula that feeds intake, its formula number is followed successively by 13,14,15 and 16.The technique preparing aqueous double-component epoxy primer by embodiment 1
Process prepares 4 kinds of epoxy primers of shown in table 7 numbered 13～16, prepares the technical process system of epoxy primer film by embodiment 1
Standby paint film.
The performance of the aqueous double-component epoxy primer prepared by formula 13, formula 14, formula 15 and formula 16 such as table 8 institute
Show.As seen from table, when select DE or RD as anti-settling agent time, aqueous double-component epoxy primer have excellence storage stability,
Grinability, fillibility, covering power, adhesive force, pliability, resistance to water and endurance energy；When selecting A200 or FX1070, aqueous
The storage stability of two component epoxy priming paint is defective and application property is poor, occur after being mainly manifested in storage sedimentation, point 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 it participates in being co-mulled and made into, may be uniformly dispersed in extender pigment, rust resisting pigment and pigment, then its electricity in water
From, thus on surface, charge layer occurs, make body constitution by the electrostatic repulsion of charge layer and the sterically hindered of macromolcular dispersant
Pigment, rust resisting pigment and pigment stabilizer in system, its schematic diagram as shown in Figure 1, meanwhile, if this rock-steady structure is by external force
After destruction, it can pass through the fast quick-recovery of charge effect, and this just provides high thixotropic and good application property for system；
A200 belongs to silica-based anti-settling agent, and its anti-settling mechanism is by interparticle hydrogen bond action, it is well known that the active force of electric charge
Can be much larger than the active force of hydrogen bond, so the anti-settling property of A200 is not as DE or RD, the thixotropy of epoxy primer prepared therefrom and
Resist sagging is the most weak；FX1070 belongs to the thickening agent of association type polyurethane type, and it does not has charge effect, does not also have hydrogen bond to make
With, so its anti-settling property is not as DE, RD and A200, thixotropy and the resist sagging of epoxy primer prepared therefrom are the most weak.Therefore,
Preferably anti-settling agent is DE or RD.
Table 7 embodiment 4 changes anti-settling agent type and prepares the basic recipe of aqueous double-component epoxy primer
Table 8 embodiment 4 anti-settling agent type and the relation of epoxy primer performance
Embodiment 5
Table 9 is embodiment 5 in the case of ensureing that unclassified stores is constant, changes anti-settling agent consumption and prepares water-base epoxy priming paint
The formula that feeds intake, its formula number is followed successively by 17,18,19 and 20.The technique preparing aqueous double-component epoxy primer by embodiment 1
Process prepares 4 kinds of epoxy primers of shown in table 9 numbered 17～20, prepares the technical process system of epoxy primer film by embodiment 1
Standby paint film.
The performance of the aqueous double-component epoxy primer prepared by formula 17, formula 18, formula 19 and formula 20 such as table 10 institute
Show.As seen from table, when DE consumption is 0.3%, water-base epoxy priming paint has the grinability of excellence, fillibility, covering power, attachment
Power, pliability, resistance to water and endurance energy, but its storage stability is defective, occurs sedimentation point water after being mainly manifested in storage；
When DE consumption is 0.6%, water-base epoxy priming paint has the properties of excellence；When DE consumption is 0.9%, at the bottom of water-base epoxy
Paint has storage stability, grinability, fillibility, covering power, adhesive force, pliability and the endurance energy of excellence, but it is water-fast
Property is defective, and the viscosity of component A slurry is excessive, have impact on production efficiency；When DE consumption is 1.2%, gluing of component A slurry
Degree is very big, has exceeded the grinding viscosity of sand mill.Accordingly, it is preferred that anti-settling agent DE consumption is 0.6%.
Table 9 embodiment 5 changes anti-settling agent consumption and prepares the basic recipe of aqueous double-component epoxy primer
Table 10 embodiment 5 anti-settling agent consumption and the relation of epoxy primer performance
Embodiment 6
Table 11 is embodiment 6 in the case of ensureing that unclassified stores is constant, and the cosolvent type changing component A prepares aqueous
The formula that feeds intake of epoxy primer, its formula number is followed successively by 17,18,19 and 20.Prepare at the bottom of aqueous double-component epoxy by embodiment 1
The technical process of paint prepares 4 kinds of epoxy primers of shown in table 11 numbered 21～24, prepares the work of epoxy primer film by embodiment 1
Skill process prepares paint film.
The performance of the aqueous double-component epoxy primer prepared by formula 21, formula 22, formula 23 and formula 24 such as table 12 institute
Show.As seen from table, the paint film property of 4 formula is the most qualified, but the rate of drying of formula 21 and formula 24 is substantially than formula 22
Slow with formula 23.This is because, the boiling point of water is 100 DEG C, and evaporation latent heat is 588KJ/Kg, and the boiling point of n-butyl alcohol 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
Being 138 DEG C, evaporation latent heat is 504.8KJ/Kg, and the boiling point of hexanol is 157.1 DEG C, and evaporation latent heat is 448.7KJ/Kg, although
The boiling point of n-amyl alcohol and hexanol is higher than water, but its evaporation latent heat is more much lower than water, and the boiling point of n-butyl alcohol and n-heptanol and
Evaporation latent heat is all high than water, so, n-amyl alcohol and hexanol, at a temperature of equivalent environment, faster can volatilize than water, thus water
Discharging paint film faster, on the one hand the existence of Polyethylene Glycol simultaneously can ensure that the stability of system, on the other hand can be significantly
Extending the open hour of paint film, make that the moisture content in paint film volatilizees is more thorough.Accordingly, it is preferred that aqueous double-component epoxy primer
Cosolvent is Polyethylene Glycol+n-amyl alcohol or Polyethylene Glycol+hexanol.
Table 11 embodiment 6 changes component A cosolvent type and prepares the basic recipe of aqueous double-component epoxy primer
Table 12 embodiment 6 component A cosolvent type and the relation of epoxy primer performance
Note: making the time of the complete dry tack free of paint film as surface drying time by blowing, ambient temperature is 25 DEG C, and humidity is 75%.
Claims (9)
1. an aqueous double-component epoxy primer, it is characterised in that described aqueous double-component epoxy primer includes component A and group
Part B, and the weight ratio of described component A and component B is 6-10:1；
Described component A is made up of following raw material by weight:
Described component B is made up of following raw material by weight:
Aqueous double-component epoxy primer the most according to claim 1, it is characterised in that the described slurry in component A by
Below raw material composition by weight:
Aqueous double-component epoxy primer the most according to claim 2, it is characterised in that described dispersant is anionic
The dispersant of high molecular and the dispersant of low-molecular-weight of anionic compound, wherein the number of the dispersant of high molecular is equal
Molecular weight ＞ 20000, the number-average molecular weight of the dispersant of low-molecular-weight is 3000-10000.
Aqueous double-component epoxy primer the most according to claim 3, it is characterised in that the macromolecule of described anionic
The dispersant of amount is 1.5-2:3-3.5 with the weight ratio of the dispersant of the low-molecular-weight of anionic.
Aqueous double-component epoxy primer the most according to claim 1 and 2, it is characterised in that described defoamer is organic
Silicon class defoamer.
Aqueous double-component epoxy primer the most according to claim 2, it is characterised in that described wetting agent is unstable bubble
Wetting agent；Described anti-settling agent is organo montmorillonite class anti-settling agent；Described rust resisting pigment be aluminium triphosphate, molybdenum phosphate zinc and
A kind of or the most several mixture in iron phosphate zinc；Described pigment is titanium dioxide and white carbon black.
Aqueous double-component epoxy primer the most according to claim 2, it is characterised in that described extender pigment be quality relatively
The extender pigment that hard extender pigment is softer with quality compounds by weight for 1-2:1；The extender pigment that wherein quality is harder is
At least one in calcium carbonate and barium sulfate；The softer extender pigment of quality is at least one in Pulvis Talci and Kaolin.
Aqueous double-component epoxy primer the most according to claim 1, it is characterised in that the epoxy of described epoxy resin is worked as
Amount is 900-1100；Described polyamine curing agent is aliphatic polybasic amine hardener, and its hydrogen equivalent is 150-250；Described
The cosolvent of component A is hydrophilic and oil loving alcohol ethers cosolvent to be compounded in the ratio of 1:1-5, the most hydrophilic helps
Solvent is Polyethylene Glycol or polypropylene glycol, and the boiling point of oil loving cosolvent is less than 160 DEG C, and evaporation latent heat is less than 530KJ/ simultaneously
Kg；The cosolvent of described component B is DAA；Described levelling agent is the dual-use function with base material moistening and levelling
Levelling agent；Described thickening agent is association type polyurethanes thickening agent；Described adhesion promoter is silane coupler class；Institute
The anti-sudden strain of a muscle rust agent stated is amino carboxylic acid salt.
9. the method for the aqueous double-component epoxy primer that a kind is prepared any one of the claims, it is characterised in that include
Following steps:
(1), after deionized water, dispersant, wetting agent and defoamer being uniformly dispersed, anti-settling agent, extender pigment, antirust face are added
Material and pigment, being dispersed to slurry under the linear velocity of 8-9m/s uniformly and has mobility, is then ground to fineness ＜ with sand mill
30 μm i.e. obtain the slurry of component A；
(2) after epoxy resin and cosolvent mix homogeneously, it is slowly added to the slurry prepared through step (1), after being uniformly dispersed,
Add defoamer, levelling agent and thickening agent, dispersed with stirring, filter discharging and i.e. obtain the component A of aqueous double-component epoxy primer；
(3) after polyamine curing agent, water and cosolvent mix homogeneously, adhesion promoter and anti-sudden strain of a muscle rust agent, stirring point are added
Dissipate the component B uniformly i.e. obtaining aqueous double-component epoxy primer.
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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 |
| CN110003763A (en) * | 2019-03-01 | 2019-07-12 | 广东华润涂料有限公司 | Bi-component aqueous epoxy lacquer type organic coating |
| 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 |
| 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 |
| 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 |
| CN113736294A (en) * | 2020-05-27 | 2021-12-03 | 廊坊立邦涂料有限公司 | Inorganic binder suitable for automobile coating and preparation method thereof |
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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 |
| CN110003763A (en) * | 2019-03-01 | 2019-07-12 | 广东华润涂料有限公司 | Bi-component aqueous epoxy lacquer type organic coating |
| 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 |
| CN113736294A (en) * | 2020-05-27 | 2021-12-03 | 廊坊立邦涂料有限公司 | Inorganic binder suitable for automobile coating 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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