CN109535919A - A kind of low-temperature quick-drying water coating and its disc type electrostatic painting process - Google Patents
A kind of low-temperature quick-drying water coating and its disc type electrostatic painting process Download PDFInfo
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- CN109535919A CN109535919A CN201811182807.6A CN201811182807A CN109535919A CN 109535919 A CN109535919 A CN 109535919A CN 201811182807 A CN201811182807 A CN 201811182807A CN 109535919 A CN109535919 A CN 109535919A
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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
- C09D163/10—Epoxy resins modified by unsaturated compounds
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B05—SPRAYING OR ATOMISING IN GENERAL; APPLYING FLUENT MATERIALS TO SURFACES, IN GENERAL
- B05D—PROCESSES FOR APPLYING FLUENT MATERIALS TO SURFACES, IN GENERAL
- B05D1/00—Processes for applying liquids or other fluent materials
- B05D1/02—Processes for applying liquids or other fluent materials performed by spraying
- B05D1/04—Processes for applying liquids or other fluent materials performed by spraying involving the use of an electrostatic field
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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
- C09D167/00—Coating compositions based on polyesters obtained by reactions forming a carboxylic ester link in the main chain; Coating compositions based on derivatives of such polymers
- C09D167/08—Polyesters modified with higher fatty oils or their acids, or with natural resins or resin acids
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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
- C08K—Use of inorganic or non-macromolecular organic substances as compounding ingredients
- C08K3/00—Use of inorganic substances as compounding ingredients
- C08K3/18—Oxygen-containing compounds, e.g. metal carbonyls
- C08K3/20—Oxides; Hydroxides
- C08K3/22—Oxides; Hydroxides of metals
- C08K2003/2237—Oxides; Hydroxides of metals of titanium
- C08K2003/2241—Titanium dioxide
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- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08K—Use of inorganic or non-macromolecular organic substances as compounding ingredients
- C08K3/00—Use of inorganic substances as compounding ingredients
- C08K3/30—Sulfur-, selenium- or tellurium-containing compounds
- C08K2003/3045—Sulfates
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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
- C08L2205/00—Polymer mixtures characterised by other features
- C08L2205/02—Polymer mixtures characterised by other features containing two or more polymers of the same C08L -group
- C08L2205/025—Polymer mixtures characterised by other features containing two or more polymers of the same C08L -group containing two or more polymers of the same hierarchy C08L, and differing only in parameters such as density, comonomer content, molecular weight, structure
Abstract
The invention discloses a kind of low-temperature quick-drying water coating and its disc type electrostatic painting process, coating includes low-temperature quick-drying water resin, dry promotion resin, pigment, filler, aqueous promoter, cosolvent, water.Water paint of the invention, characteristic with low-temperature quick-dry, good levelability is had both simultaneously, the unification for realizing low-temperature quick-dry and being easy between levelling, good painting effect can be obtained under different humidity by the spray viscosity of simple adjustment coating simultaneously, influence of the ambient humidity to painting effect is effectively prevented, the difficulty of coating is enormously simplified, the coating especially suitable for car jack.Disc type electrostatic painting process of the invention, coating quality be easier to guarantee, product qualified rate is high.
Description
Technical field
The present invention relates to a kind of water paint and its coating process, in particular to a kind of low-temperature quick-drying water coating and its circle
Disc type electrostatic painting process.
Background technique
Disc type (also crying Omega) electrostatic spraying is as a kind of common coating mode, using disc atomizer conduct
Spraying center, workpiece are run along Ω shape track around disk.When work, disk high speed rotation simultaneously moves up and down, workpiece into
After entering spraying area, 90 °~360 ° of rotation or continuous rotation can be made as needed, both give full play to the efficiency of atomizer, also expanded
The big geometric space of spraying, is a kind of more satisfactory spraying method.Revolving dish atomizing disk is disc type electrostatic automatic paint-spraying machine
Device main component, undertakes coating atomizing functions, and the uniformity and atomizing particle size of coating are directly related with coating.Electrostatic atomization
Disk is mounted on Pneumatic high-speed motor connecting pin, and coating is quantitatively transported to disk inner wall and is rotated using high speed centrifugation toward disk from pumping
Small hole at bottom part throws away to form small of mist；Misty coating is adsorbed onto rapidly the positive workpiece of band with cathode electrostatic and (is grounded just
Pole), complete electrostatic painting coating operation.
Conventional oil-based coating is dilute due to there is diluent to open, and dispersed sprayability is preferable, is easily accomplished Electrostatic Absorption, and oil
Property coating resist sagging, drying property and the gloss of coating and offline dry-ness can be controlled by diluent, be suitble to disk
Formula electrostatic spraying.For oil paint because there are inflammable and explosive danger for it, VOC emission amount is high, serious to pollute environment and jeopardize spraying work
The health of people, country gradually ban use.
The main trend of industry development is had become using the Water-borne modification of the coating system of disc type electrostatic pressure spray process.But water
Property coating using water as dispersion medium, itself dilution property it is just poorer than oiliness diluent, it is difficult to reach the excellent atomization of oil paint
Effect, the levelling in disc type electrostatic spray process and release hang between equalization point be difficult to control, the performance of coating is mentioned
Higher requirement is gone out.CN106566363A discloses a kind of disc type for being adapted to aqueous work anticorrosive paint used for vehicle transmission shaft
Electrostatic spraying technique.Its aqueous one-component anticorrosive coating and preparation method thereof being related to, the advantage is that preferably to solve
The corrosion resistance of phosphorating treatment steel construction piece aqueous one-component coating, offline drying property, anti-after tack problem and meet single group
The technical issues of sagging and levelling of part water paint disc type electrostatic spraying.But it need to toast 30min under the conditions of 80 DEG C
It is dry, it is unable to satisfy the requirement of car jack low-temperature quick-dry.
In addition, environment temperature, humidity that the spraying application of water paint is sprayed are affected, using disc type electrostatic
When technique, this particularly evident influence.Same water paint, same spray viscosity, same temperature, the spraying under different humidity
There is very big difference in effect.Existing low-temperature quick-drying water coating generally requires to form coating the biggish adjustment of progress,
Preferable painting effect can be obtained.
China is car jack largest production state, and most of car jack coating factory uses disc type electrostatic spraying work
Skill, a conventional spraying, film thickness is up to 50~60 μm.Car jack is usually the color of high glaze high brightness with coating, right
Paint film appearance requirement is high, and slightly flaw then needs to do over again to respray.
Car jack coating is the end process of car jack production, and coating completion generally fills immediately after the assay was approved
Case.Jack has been added with hot pressing oil before carrying out coating.Its in the case of a high temperature, the vulnerable permeability of sealing ring, thus its
For fired temperature not above 70 DEG C, this requires coating to have low-temperature quick-dry and offline dry-ness.And jack workpiece itself
It is thick and heavy, it conducts heat and radiates and is relatively slow, when entering spray station by pre-treatment, workpiece surface temperature is up to 40~45 DEG C, quick-drying
Again because of its quick-drying when type coating sprays to workpiece surface, forms subtle paint grain and affect the levelling of paint film appearance.If
Raising spraying flow, thickness apply the roughness meeting for covering undercoat paint film because of blocked up spraying, lead to paint film sagging, appearance is caused to be examined
It surveys unqualified.
How to overcome the contradiction between quick-drying and levelling, develop a kind of applicable low-temperature quick-dry and there is good flow leveling
Water paint, while meeting the requirement of disc type electrostatic spraying, be challenging and practical significance a job.
Summary of the invention
It is an object of the present invention to overcome the deficiencies of the prior art and provide a kind of low-temperature quick-drying water coating.
Another object of the present invention uses the disc type electrostatic painting process of above-mentioned low-temperature quick-drying water coating in providing.
The technical solution used in the present invention is:
A kind of low-temperature quick-drying water coating, quality group become:
Wherein, low-temperature quick-drying water resin is selected from aqueous emulsion single component epoxy, water-soluble acrylic modified epoxy ester
At least one of resin, water-soluble acrylic modified alkyd resin toast 15~30min under the conditions of 60~65 DEG C, cold
But after 5~15min, film reaches tack-free, and hardness is not less than HB.
It is dry to promote resin for epoxy-modified acrylic acid tree as the further improvement of above-mentioned low-temperature quick-drying water coating
Rouge, preferably with moral single component epoxy 3EB81W.
As the further improvement of above-mentioned low-temperature quick-drying water coating, cosolvent is by high boiling solvent, reduction resin viscosity
True solvent and high solvent flashing compound, wherein the boiling point of high boiling solvent be not less than 240 DEG C；Height volatilization refers to solvent
Relatively volatile rate be greater than 99% n-butyl acetate relatively volatile rate；Preferably, high boiling solvent be selected from alcohol ester 12,
Propylene glycol phenylate；True solvent is selected from dibasic acid ester, propylene glycol methyl ether acetate, octanol, butyl acetate；Height volatilization
Solvent is selected from isopropanol, ethyl alcohol.
As the further improvement of above-mentioned low-temperature quick-drying water coating, high boiling solvent: true solvent: the matter of high solvent flashing
Measure ratio=(1~2): (1.5~3): (1.5~3).
As the further improvement of above-mentioned low-temperature quick-drying water coating, filler is selected from ultra-fine barium sulfate, mica powder, silicon powder
At least one of with fumed silica.
As the further improvement of above-mentioned low-temperature quick-drying water coating, aqueous promoter is selected from wetting agent, levelling agent, defoaming
At least one of agent, conductive agent, anti-settling agent, adhesive agent and thickener.
A kind of disc type electrostatic painting process of car jack, includes the following steps:
1) Coating Pretreatment is carried out to car jack；
2) disc type electrostatic spraying is carried out using above-mentioned low-temperature quick-drying water coating；
3) dry under conditions of being not higher than 65 DEG C after the completion of spraying.
As the further improvement of above-mentioned disc type electrostatic painting process, when the viscosity of adjusting coating is 25 DEG C before spraying,
Apply 4# glasss, 15~25 seconds.
As the further improvement of above-mentioned disc type electrostatic painting process, workpiece surface temperature is 45~50 DEG C before coating.
As the further improvement of above-mentioned disc type electrostatic painting process, the pH of adjusting coating is excellent not less than 7.5 before spraying
Select 7.5~8.0.
The beneficial effects of the present invention are:
Water paint of the invention, the characteristic with low-temperature quick-dry, while good levelability is had both, it is fast to realize low temperature
Unification that is dry and being easy between levelling, while can be obtained under different humidity very well by the spray viscosity of simple adjustment coating
Painting effect, effectively prevent influence of the ambient humidity to painting effect, enormously simplify the difficulty of coating, especially suitable for
The coating of car jack.
Disc type electrostatic painting process of the invention, coating quality be easier to guarantee, product qualified rate is high.
Specific embodiment
A kind of low-temperature quick-drying water coating, quality group become:
Wherein, low-temperature quick-drying water resin is selected from aqueous emulsion single component epoxy, water-soluble acrylic modified epoxy ester
At least one of resin, water-soluble acrylic modified alkyd resin toast 15~30min under the conditions of 60~65 DEG C, cold
But after 5~15min, film reaches tack-free, and hardness is not less than HB.
It is dry that resin is promoted to be higher than for glass transition temperature (Tg) as the further improvement of above-mentioned low-temperature quick-drying water coating
The epoxy modified acrylic resin of low-temperature quick-drying water resin.It is preferred that with moral single component epoxy 3EB81W, (Foshan City is brilliant
With moral Chemical Co., Ltd.).The dry glass transition temperature (Tg) for promoting resin is higher, is faster cured in dry process anti-
Answer, and in the curing process the resin hydrophobic segment segment in coating contact with each other it is interspersed, squeeze out wet film in moisture, work as steaming
After hair falls most of moisture, a kind of close-packed structure of layered laminate is formed, meets the quick table under lower temperature baking condition
Dry requirement improves the stacking of paint film.
As the further improvement of above-mentioned low-temperature quick-drying water coating, cosolvent is by high boiling solvent, reduction resin viscosity
True solvent and high solvent flashing compound, wherein the boiling point of high boiling solvent be not less than 240 DEG C；Height volatilization refers to solvent
Relatively volatile rate be greater than 99% n-butyl acetate relatively volatile rate；Preferably, high boiling solvent be selected from alcohol ester 12,
Propylene glycol phenylate；True solvent is selected from dibasic acid ester, propylene glycol methyl ether acetate, octanol, butyl acetate；Height volatilization
Solvent is selected from isopropanol, ethyl alcohol.
As the further improvement of above-mentioned low-temperature quick-drying water coating, high boiling solvent: true solvent: the matter of high solvent flashing
Measure ratio=(1~2): (1.5~3): (1.5~3), preferably (1.5~2): (2~3): (2~3).Particularly, high boiling solvent
For alcohol ester 12 or propylene glycol phenylate, true solvent is octanol, and high solvent flashing is ethyl alcohol, mass ratio=(1.5~2): (2~
3): (2~3).
By reasonably adjusting the combination of cosolvent, the perfect unity of water paint quick-drying and levelling is realized.
As the further improvement of above-mentioned low-temperature quick-drying water coating, pigment organic pigment, inorganic pigment and metallic pigments
One or two kinds of mixtures.Pigment can be selected accordingly according to specific coating specification.
As the further improvement of above-mentioned low-temperature quick-drying water coating, filler is selected from ultra-fine barium sulfate, mica powder, silicon powder
At least one of with fumed silica.Filler can be adjusted correspondingly according to specific needs, to coating without aobvious
Writing influences.
As the further improvement of above-mentioned low-temperature quick-drying water coating, aqueous promoter is selected from wetting agent, levelling agent, defoaming
At least one of agent, conductive agent, anti-settling agent, adhesive agent and thickener.Aqueous promoter can be according to specifically needing to carry out phase
The adjustment answered.
As the further improvement of above-mentioned low-temperature quick-drying water coating, pH is 7.5~8.0.
A kind of disc type electrostatic painting process of car jack, includes the following steps:
1) Coating Pretreatment is carried out to car jack；
2) disc type electrostatic spraying is carried out using above-mentioned low-temperature quick-drying water coating；
3) dry under conditions of being not higher than 65 DEG C after the completion of spraying.
As the further improvement of above-mentioned disc type electrostatic painting process, when the viscosity of adjusting coating is 25 DEG C before spraying,
Apply 4# glasss, 15~25 seconds.
As the further improvement of above-mentioned disc type electrostatic painting process, workpiece surface temperature is 45~50 DEG C before coating.
As the further improvement of above-mentioned disc type electrostatic painting process, the pH of adjusting coating is excellent not less than 7.5 before spraying
Select 7.5~8.0.In favor of coating.
Below with reference to embodiment, technical solution of the present invention is further illustrated.
Low-temperature quick-drying water resin used in the following embodiment toasts 15~30min, paint film under the conditions of 60~65 DEG C
Thickness of dry film control be 30~40 μm, after cooling 5~15min, reach tack-free (GB/T1728), hardness is greater than HB (GB/
T6739)。
Embodiment 1
Embodiment 2
Embodiment 3
Embodiment 4
Embodiment 5
Comparative example 1, with embodiment 5, the difference is that cosolvent is 6 parts of propylene glycol monomethyl ether；
Comparative example 2, with embodiment 5, the difference is that cosolvent are as follows: 3 parts of octanol, 2 parts of ethyl alcohol；
Comparative example 3, with embodiment 5, the difference is that cosolvent are as follows: 2 parts of propylene glycol phenylate, 1 part of ethyl alcohol, octanol 1.5
Part；
Comparative example 4, with embodiment 5, the difference is that cosolvent are as follows: 12 parts of alcohol ester；
Comparative example 5, with embodiment 5, the difference is that cosolvent are as follows: 2.5 parts of propylene glycol phenylate, 2 parts of ethyl alcohol；
Comparative example 6, with embodiment 5, the difference is that cosolvent are as follows: 12 parts of alcohol ester, 4 parts of octanol, 2 parts of ethyl alcohol.
The Coating Pretreatment of car jack can be carried out by existing method, or specific progress as follows:
Car jack Coating Pretreatment is carried out: pre- degreasing, degreasing, washing 1., table tune, vitrification, the washing techniques such as 2.
Pretreatment, the workpiece surface after pre-treatment have oil, become rusty, and dirt etc. pollutes impurity.
The disc type electrostatic painting process of car jack
1) viscosity of the fast-drying aqueous coating of above-mentioned single-component low temperature, coating after control and regulation are adjusted using deionized water
PH is not less than 7.5, preferably 7.5~8.0；Before coating between about 45~50 DEG C of workpiece surface temperature；
2) after 60~65 DEG C of 15~30min of low-temperature bake, by air-cooled pressure cooling down workpiece surface temperature to 35~45 DEG C,
Vanning stacking after offline.
Below with reference to detection data, the coating property of embodiment and comparative example is compared accordingly.
The disc type electrostatic painting process of the single-component water-based coating of car jack of the invention is determining that collar plate shape is quiet
The spraying reciprocating speed of electric spray gun is 14m/min-15m/min, under the premise of spraying flow is 300cc/min.To water paint
System is added different cosolvents and is compared, and specific flow parameter compares following (the single-component water-based painting of car jack of data
When the working viscosity of material is 25 DEG C painting 4# cup 21 ± 1 seconds, 25 DEG C of the temperature of painting environments, humidity 75RH%；Drying condition is
60℃×25min)。
The influence of table 1, different cosolvents to film performance
It was found from the experimental data in table 1:
1) Examples 1 to 5 obtains comprehensive painting effect well by rationally compounding cosolvent.
2) a certain amount of cosolvent is added to the disc type electrostatic spraying effect of the single-component water-based coating of car jack
It is affected, the dissolving power of propylene glycol monomethyl ether is general, causes spraying process atomized drop larger, in addition propylene glycol monomethyl ether boiling point
Low, paint film levelability is poor, but property is good, not sagging；
3) ethyl alcohol dissolving power is good, and spraying process atomizing effect is preferable, and atomized drop is smaller, but low boiling point, and paint film is dry
It is too fast to cause levelability poor；
4) octanol dissolving power atomizing effect is preferable, and atomized drop is small, and boiling point is higher, paint film good leveling property, but it is dry compared with
Slowly lead to slight sagging, paint film stemness is general；
5) 12 dissolving power of alcohol ester is poor, and boiling point is high, causes spraying atomizing effect bad, atomized drop is larger, paint film stemness
Difference, sagging is serious, but since paint film is dry slow, wet film state has enough time levelling, so good leveling property.
6) comparative example 2,3,5,6 compounds cosolvent system to the disc type electrostatic of the single-component water-based coating of car jack
Spraying effect is inconsistent, comprehensive optimal 12/ethyl alcohol of alcohol ester for the Examples 1 to 5/octanol compound system of painting effect.
Influence of the film thickness to painting effect
Since water paint atomizing effect is poor, moisture evaporation is slower than solvent, but mobility is again relatively good, of the invention to adapt to
The disc type electrostatic painting process of the single-component water-based coating of car jack, and meet product paint film appearance levelling gloss and want
Ask (working viscosity of car jack single-component water-based coating (water paint of embodiment 1) be 25 DEG C painting 4# cup 21 ± 1 seconds
When, 25 DEG C of the temperature of painting environments, humidity 75RH%；Drying condition is 60 DEG C × 25min), the control of paint thickness is very
It is important.
Table 2, paint thickness are to the influence list of coating performance and appearance
Known to example 2a~2f it can be found that if coating thickness is relatively thin, product stemness and adhesive force can be fine, but film
Levelability is poor and directly affects the outer light of paint and gloss；If paint film is too thick, and will lead to paint sagging, surface moisture volatilizees not
Solvent hole is generated completely, also be will have a direct impact on product surface stemness, is influenced wire wrapping and later period adhesive force under product.So being
The good appearance of guarantee and paint film property, paint thickness need to control at 30~40 μm or so.
Influence of the ambient humidity to painting effect
The disc type electrostatic painting process of the single-component water-based coating of car jack of the invention is determining that collar plate shape is quiet
The spraying reciprocating speed of electric spray gun is 14m/min~15m/min, under the premise of spraying flow is 300cc/min.To same aqueous
Coating (water paint of embodiment 1) same temperature, the spray viscosity under different humidity compare, and specific pasting parameter compares
Data are following (25 DEG C of the temperature of painting environments, drying condition are 60 DEG C × 25min).
The influence of table 3, different humidity and spray viscosity to painting effect
By example 3a~3g it can be found that same car jack with single-component water-based coating in same temperature, varying environment
Under humidity, disc type electrostatic painting process obtains spray viscosity and has differences.But it only needs to be changed according to ambient humidity timely
Adjust working viscosity, so that it may guarantee the coating quality of paint film.
Claims (10)
1. a kind of low-temperature quick-drying water coating, quality group become:
Wherein, low-temperature quick-drying water resin be selected from aqueous emulsion single component epoxy, water-soluble acrylic modified epoxy ester resin,
At least one of water-soluble acrylic modified alkyd resin, 15~30min of baking under the conditions of 60~65 DEG C, cooling 5~
After 15min, film reaches tack-free, and hardness is not less than HB.
2. low-temperature quick-drying water coating according to claim 1, it is characterised in that: dry promotion resin is epoxy-modified
Acrylic resin, preferably with moral single component epoxy 3EB81W.
3. low-temperature quick-drying water coating according to claim 1, it is characterised in that: cosolvent is by high boiling solvent, reduction
The true solvent and high solvent flashing of resin viscosity compound, wherein the boiling point of high boiling solvent is not less than 240 DEG C；Gao Hui
Bristle with anger solvent relatively volatile rate be greater than 99% n-butyl acetate relatively volatile rate；Preferably, high boiling solvent is selected from
Alcohol ester 12, propylene glycol phenylate；True solvent is selected from dibasic acid ester, propylene glycol methyl ether acetate, octanol, butyl acetic acid
Ester；High solvent flashing is selected from isopropanol, ethyl alcohol.
4. low-temperature quick-drying water coating according to claim 1 or 3, it is characterised in that: high boiling solvent: true solvent: high
The mass ratio of solvent flashing=(1~2): (1.5~3): (1.5~3).
5. low-temperature quick-drying water coating according to claim 1, it is characterised in that: filler is selected from ultra-fine barium sulfate, mica
At least one of powder, silicon powder and fumed silica.
6. low-temperature quick-drying water coating according to claim 1, it is characterised in that: aqueous promoter is selected from wetting agent, levelling
At least one of agent, defoaming agent, conductive agent, anti-settling agent, adhesive agent and thickener.
7. a kind of disc type electrostatic painting process of car jack, includes the following steps:
1) Coating Pretreatment is carried out to car jack；
2) disc type electrostatic spraying is carried out using the described in any item low-temperature quick-drying water coating of claim 1~6；
3) dry under conditions of being not higher than 65 DEG C after the completion of spraying.
8. disc type electrostatic painting process according to claim 7, it is characterised in that: the viscosity of adjusting coating is before spraying
At 25 DEG C, 4# glasss, 15~25 seconds are applied.
9. disc type electrostatic painting process according to claim 7, it is characterised in that: workpiece surface temperature is 45 before coating
~50 DEG C.
10. disc type electrostatic painting process according to claim 7, it is characterised in that: spray the pH of preceding adjusting coating not
Lower than 7.5, preferably 7.5~8.0.
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| CN201811182807.6A CN109535919B (en) | 2018-10-11 | 2018-10-11 | Low-temperature quick-drying water-based paint and disc type electrostatic spraying process thereof |
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| CN201811182807.6A CN109535919B (en) | 2018-10-11 | 2018-10-11 | Low-temperature quick-drying water-based paint and disc type electrostatic spraying process thereof |
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| CN109535919B CN109535919B (en) | 2021-02-19 |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110743703A (en) * | 2019-10-23 | 2020-02-04 | 润利企业管理咨询(上海)有限公司 | Multifunctional separation protective agent for electrostatic paint mist treatment system and preparation method thereof |
| CN114106671A (en) * | 2021-12-06 | 2022-03-01 | 广州集泰化工股份有限公司 | Alkyd primer capable of being dried at low temperature and high humidity and preparation method thereof |
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| CN105199531A (en) * | 2015-10-15 | 2015-12-30 | 广州擎天材料科技有限公司 | Water-based air-drying protective coating for escalator and coating process of water-based air-drying protective coating in humid environment |
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| CN110743703B (en) * | 2019-10-23 | 2021-12-07 | 润利企业管理咨询(上海)有限公司 | Multifunctional separation protective agent for electrostatic paint mist treatment system and preparation method thereof |
| CN114106671A (en) * | 2021-12-06 | 2022-03-01 | 广州集泰化工股份有限公司 | Alkyd primer capable of being dried at low temperature and high humidity and preparation method thereof |
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