CN109135543A - A kind of wettable preparation method for squirting water paint - Google Patents
A kind of wettable preparation method for squirting water paint Download PDFInfo
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- CN109135543A CN109135543A CN201811009027.1A CN201811009027A CN109135543A CN 109135543 A CN109135543 A CN 109135543A CN 201811009027 A CN201811009027 A CN 201811009027A CN 109135543 A CN109135543 A CN 109135543A
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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
- C09D175/00—Coating compositions based on polyureas or polyurethanes; Coating compositions based on derivatives of such polymers
- C09D175/04—Polyurethanes
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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
- C09D5/00—Coating compositions, e.g. paints, varnishes or lacquers, characterised by their physical nature or the effects produced; Filling pastes
- C09D5/002—Priming paints
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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
- C09D5/00—Coating compositions, e.g. paints, varnishes or lacquers, characterised by their physical nature or the effects produced; Filling pastes
- C09D5/14—Paints containing biocides, e.g. fungicides, insecticides or pesticides
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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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- 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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Abstract
The invention discloses a kind of wettable preparation methods for squirting water paint, belong to coating preparation field.The present invention includes the preparation of priming paint and finishing coat, and priming paint is made in accordance with the following methods: A, preparing raw material, part material is added under agitation and is uniformly ground to fineness less than 10 microns；B, remaining raw material is added in mixture obtained above under agitation, filters priming paint is made after mixing evenly；Finishing coat is made in accordance with the following methods: a, preparing raw material, part material is added under agitation and uniform stirring is ground to fineness less than 10 microns；B, remaining raw material is added in mixture obtained above under agitation, filters finishing coat is made after mixing evenly.The present invention overcome in the prior art water paint be difficult to carry out that wet shot is wet, the lower deficiency of production efficiency, can effectively realize the wet technique of wet shot, to improve production efficiency, reduce production energy consumption.
Description
Technical field
The present invention relates to technical field of paint preparation, more specifically to a kind of wettable preparation for squirting water paint
Method.
Background technique
There are all multi-products since use demand will carry out spray treatment on its surface in the industrial production, paint spraying is must
Indispensable process requirements, traditional solvent type coating is relatively conventional on the market at present, but with current national environmental protection policy
It is strict with, the aqueous low temperature coating products of low VOC low energy consumption come into being, gradually instead of traditional solvent type coating, common
Application property and gloss levelling etc. are many-sided suitable with solvent based coating, and solvent based coating can be light by technique and formula design
Pine nut shows that wet shot is wet, accomplishes the roasting coating baking technique of two paintings one, production energy consumption is greatly reduced.But in water paint construction
It realizes that two paintings one are roasting, because water and organic solvent are very big in various physical property difference such as heat of evaporation and surface tension, causes
Water paint product one can only apply one and dry, greatly influence production efficiency, while energy consumption is very big.Therefore a kind of and solvent is developed
The comparable coating that can easily realize the wet technique of wet shot of type coating to raising production efficiency and reduces production energy consumption, and improves
Enterprise's productivity effect is crucial.
Through retrieving, the technical research about water paint has patent disclosure, such as Chinese Patent Application No.:
2016108555962, the applying date: on September 28th, 2016, invention and created name are as follows: a kind of double-component aqueous ecologic coating and its
Preparation method, this application discloses a kind of double-component aqueous ecologic coating, formula includes film forming matter 50-80%, aqueous molten
Agent 1-10%, deionized water 5-15%, dispersing agent 0.1-3%, coalescing agent 0.3-3%, titanium dioxide 0-20%, wetting aid
0.1-1%, leveling auxiliary agent 0.1-1%, antifoam additives 0.1-1%, anti-shrinkage cavity auxiliary agent 0.1-3%, thickener 0.1-5%, plant
Preservative 0.1-2%, fungistat 0.1-10%, wormwood extract liquor 0.1-10%, yeast 0.1-10%, silver ion 0.1-
10%, calcium ion 0.1-10%, titanium ion 0.1-10%, filler material 0-10%, pigment 0-10%；Preparation method is that dispersion machine stirs
It mixes the raw material addition grinder being uniformly stirred to be ground, be packed after filtering.This application is mainly used in printing packaging system
The facing of product, safe anti-corrosion, but for that can realize that the wet technique of wet shot is still difficult to ensure.
Summary of the invention
1. technical problems to be solved by the inivention
It is an object of the invention to overcome in the prior art water paint be difficult to carry out that wet shot is wet, production efficiency is lower not
Foot provides a kind of wettable preparation method for squirting water paint, can effectively realize the wet technique of wet shot, to improve production effect
Rate, reduce production energy consumption, can be widely applied in field of coating, especially be related to two layers of the coating of vehicle body and related request,
The low temperature field of coating once toasted has good result.
2. technical solution
In order to achieve the above objectives, technical solution provided by the invention are as follows:
The wettable preparation method for squirting water paint of one kind of the invention, the preparation including priming paint and finishing coat, priming paint according to
Following methods are made:
A, prepare raw material, aqueous dispersion, aqueous is added in water-based hydroxyl acrylic acid secondary breakup body under agitation
Defoaming agent, deionized water, anticorrosion and bactericidal agent, rutile type titanium white and hydrophilic fumed silica uniformly stir mixture
It mixes and is ground to fineness less than 10 microns；
B, aqueous levelling agent, aqueous liquid auxiliary rheological agents and the third two is added in mixture obtained above under agitation
Alcohol diacetate obtains former paint after mixing evenly, original paint is filtered using 150-250 mesh filter screen, priming paint is made；
Finishing coat is made in accordance with the following methods:
A, prepare raw material, aqueous dispersion, aqueous is added in water-based hydroxyl acrylic acid secondary breakup body under agitation
Defoaming agent, deionized water, anticorrosion and bactericidal agent, organic pigment and hydrophilic fumed silica, mixture uniform stirring is ground
To fineness less than 10 microns；
B, aqueous levelling agent, aqueous liquid auxiliary rheological agents and the third two is added in mixture obtained above under agitation
Alcohol diacetate obtains former paint after mixing evenly, original paint is filtered using 150-250 mesh filter screen, finishing coat is made.
Further, water-based hydroxyl acrylic acid secondary breakup body is stirred under the conditions of 300-700 revs/min in step A
It mixes and other raw materials is added, after adding, mixture is stirred to 10-15min under the conditions of 700-1200 revs/min and then is ground
Mill；Mixture is stirred under the conditions of 300-700 revs/min in step B and other raw materials are added.
Further, water-based hydroxyl acrylic acid secondary breakup body is stirred under the conditions of 300-700 revs/min in step a
It mixes and other raw materials is added, mixture is stirred into 10-15min under the conditions of 700-1200 revs/min after adding, is then ground
Mill；Mixture is stirred under the conditions of 300-700 revs/min in step b and other raw materials are added.
Further, the addition parts by weight of hydrophilic fumed silica are more than hydrophilic gas phase two in finishing coat in priming paint
The addition parts by weight of silica.
Further, the addition parts by weight of hydrophilic fumed silica and hydrophilic gas phase two in priming paint in finishing coat
The ratio of the addition parts by weight of silica is 1: (1.2-5).
Further, the addition parts by weight of hydrophilic fumed silica and hydrophilic gas phase two in priming paint in finishing coat
The ratio of the addition parts by weight of silica is 1: (2-2.5).
Further, in priming paint aqueous levelling agent addition parts by weight less than aqueous levelling agent in finishing coat addition weight
Part, the ratio of the addition parts by weight of aqueous levelling agent and the addition parts by weight of aqueous levelling agent in priming paint is (1.5- in finishing coat
3)∶1。
Further, priming paint includes the raw material of following parts by weight:
Further, finishing coat includes the raw material of following parts by weight:
Further, the conductivity range of deionized water is in 0.1-20us/cm.
3. beneficial effect
Using technical solution provided by the invention, compared with prior art, there is following remarkable result:
(1) the wettable preparation method for squirting water paint of one kind of the invention, being added in priming paint and finishing coat has hydrophilic
Fumed silica, and the addition parts by weight of hydrophilic fumed silica are more than hydrophilic gas phase titanium dioxide in finishing coat in priming paint
The addition parts by weight of silicon meet priming paint normal elevation construction and sagging and do not keep the demand of preferable levelability and the height of finishing coat
Appearance requirement, while providing necessary guarantee for wet shot wet trade technique, without to priming paint drying or pre-baked, two paintings when use
Disposable baking can form paint film coating system after layer spray is good, improve production efficiency, reduce production energy consumption, wet in wet shot
Using very convenient in construction.
(2) the wettable preparation method for squirting water paint of one kind of the invention, the priming paint and finishing coat produced match,
Per pass coating all baking-curings are not needed, production efficiency is improved, reduce production cost, while coating wet film can also be reduced
Entirety exposes to the open air to be crossed for a long time in production environment, improves dry film surface cleanness.
(3) the wettable preparation method for squirting water paint of one kind of the invention, aqueous defoamer be meet mill base grinding and
Inhibit in work progress and bubble microvesicle offer demand is provided, while introducing a small amount of propylene glycol diacetate and further decreasing paint film
Foaming characteristic, further increase the surface effect of paint film and improve application property.
(4) the wettable preparation method for squirting water paint of one kind of the invention, pH value adjustment agent and anticorrosion and bactericidal agent add
Enter the storage stability for helping to ensure coating products, makes to cooperate between each raw material, obtain the priming paint of high comprehensive performance
And finishing coat, and ensure the good appearance effect of product.
(5) the wettable preparation method for squirting water paint of one kind of the invention, priming paint provides excellent between substrate and finishing coat
The different effect of forming a connecting link, adhesive force outstanding and covering power, to improve the flatness of substrate, for the high surface of composite coating
Presentation quality provides good basis, and the film effect after priming paint and the painting of finishing coat two one are baked is that finishing coat covers uniformly, no priming paint exposing,
Without shrinkage cavity, quality be improved significantly.
Detailed description of the invention
Fig. 1 is the flow diagram of the preparation method of priming paint in the present invention；
Fig. 2 is the flow diagram of the preparation method of finishing coat in the present invention；
Fig. 3 is the application method flow diagram of coating in the present invention.
Specific embodiment
To further appreciate that the contents of the present invention, in conjunction with attached drawing, the present invention is described in detail.
In the description of the present invention, it should be noted that term " center ", "upper", "lower", "left", "right", "vertical",
The orientation or positional relationship of the instructions such as "horizontal", "inner", "outside" be based on the orientation or positional relationship shown in the drawings, merely to
Convenient for description the present invention and simplify description, rather than the device or element of indication or suggestion meaning must have a particular orientation,
It is constructed and operated in a specific orientation, therefore is not considered as limiting the invention.In addition, term " first ", " second ",
" third " is used for descriptive purposes only and cannot be understood as indicating or suggesting relative importance.
The present invention will be further described with reference to the examples below.
Embodiment 1
As shown in Figure 1-Figure 3, the wettable preparation method for squirting water paint of one kind of the present embodiment, including priming paint and finishing coat
Preparation, priming paint is made in accordance with the following methods:
A, prepare raw material, aqueous dispersion, aqueous is added in water-based hydroxyl acrylic acid secondary breakup body under agitation
Defoaming agent, deionized water, anticorrosion and bactericidal agent, rutile type titanium white and hydrophilic fumed silica uniformly stir mixture
It mixes and is ground to fineness less than 10 microns；
B, aqueous levelling agent, aqueous liquid auxiliary rheological agents and the third two is added in mixture obtained above under agitation
Alcohol diacetate obtains former paint after mixing evenly, original paint is filtered using 150-250 mesh filter screen, priming paint is made；
Finishing coat is made in accordance with the following methods:
A, prepare raw material, aqueous dispersion, aqueous is added in water-based hydroxyl acrylic acid secondary breakup body under agitation
Defoaming agent, deionized water, anticorrosion and bactericidal agent, organic pigment and hydrophilic fumed silica, mixture uniform stirring is ground
To fineness less than 10 microns；
B, aqueous levelling agent, aqueous liquid auxiliary rheological agents and the third two is added in mixture obtained above under agitation
Alcohol diacetate obtains former paint after mixing evenly, original paint is filtered using 150-250 mesh filter screen, finishing coat is made.
Specifically, the present embodiment indsole enamel-cover includes the raw material of following parts by weight:
The preparation method of the priming paint is specific as follows in the present embodiment:
A, prepare raw material according to above-mentioned formula ratio, by water-based hydroxyl acrylic acid secondary breakup body under the conditions of 300 revs/min
The agent of 0.2-0.4 parts by weight pH value adjustment is added (according to selected water-based hydroxyl acrylic acid secondary breakup in stirring under agitation
The pH value of body determines additive amount), aqueous dispersion, aqueous defoamer, deionized water, anticorrosion and bactericidal agent, rutile type titanium white,
After adding, after mixture is stirred 10min under the conditions of 700 revs/min, it is small to be ground to fineness for hydrophilic fumed silica
In 10 microns；
B, the mixture that step A is obtained is stirred under the conditions of 300 revs/min, is added under agitation according to formula ratio
Enter aqueous levelling agent, aqueous liquid auxiliary rheological agents and propylene glycol diacetate, obtain former paint after mixing evenly, original paint is used
200 mesh filter screens, which filter, is made priming paint.
Specifically, it when in the present embodiment prepared by priming paint, can be used water-based hydroxyl acrylic acid secondary breakup body, the water of half
Property dispersing agent, aqueous defoamer evenly spread in deionized water under agitation, form the first mixture；Then by anti-corrosion
Fungicide, rutile type titanium white, hydrophilic fumed silica are added in the first mixture and uniformly mix, and form the second mixing
Object, and the dispersion of the second mixture is ground to fineness less than 10 microns；Then by the water-based hydroxyl acrylic acid second level of remaining half
The condition that dispersion, pH value adjustment agent, aqueous levelling agent, aqueous liquid auxiliary rheological agents and propylene glycol diacetate are dispersed in low speed
Under, it is added to the second mixing species middling speed and stirs evenly to obtain former paint, priming paint, two fraction of water-based hydroxyl acrylic acid then is made through filtering
The substep addition of granular media helps to improve the production efficiency of master grind, realizes relatively small number of color paste consumption, is worth more
Priming paint.
Aqueous defoamer in the present embodiment in base paint formulation by win wound coating additive TEGOFoamex830 and
Two kinds of compositions of SurfynolMD-20 (former air chemical industry now creates coating additive to win), TEGOFoamex830 are used for color early period
Slurry grinding, SurfynolMD-20 is for the later period at adding in paint formula；Hydrophilic fumed silica is wacker chemicals (China)
The N20ST fumed silica of Co., Ltd (WACKER), aqueous liquid auxiliary rheological agents are the BYK-420 and BYK- of BYK company
425 two auxiliary agent collocation use；Anticorrosion and bactericidal agent is that the KATHON LXE high-performance anti-corrosion that DOW Chemical (DOW) company provides is killed
Microbial inoculum.
Finishing coat specifically includes the raw material of following parts by weight in the present embodiment:
Finishing coat is specifically made in accordance with the following methods in the present embodiment:
Step a, prepare raw material according to above-mentioned formula ratio, by water-based hydroxyl acrylic acid secondary breakup body in 300 revs/min of items
It is stirred under part, the agent of 0.2-0.4 parts by weight pH value adjustment is added under agitation (according to selected water-based hydroxyl acrylic acid second level
The pH value of dispersion determines additive amount), aqueous dispersion, aqueous defoamer, deionized water, anticorrosion and bactericidal agent, organic pigment and
Mixture is stirred 10min under the conditions of 700 revs/min after adding, is ground after uniform stirring by hydrophilic fumed silica
Fineness is milled to less than 10 microns；
B, mixture obtained above is added to aqueous levelling agent, aqueous liquid stream under 300 revs/min of stirring condition
Become auxiliary agent and propylene glycol diacetate, obtain former paint after mixing evenly, original paint is filtered using 200 mesh filter screens, finishing coat is made.
The conductivity of deionized water used in priming paint and finishing coat is 0.1uS/cm in the present embodiment, using lower conductance
Rate, so that the performance of water paint is all the more stable, the opposite extension of stable storing phase.
Specifically matched uses using white primer and red finishing coat in the present embodiment, there is optional red in finishing coat raw material
Machine pigment, other raw materials used in finishing coat with it is essentially identical in priming paint, and in finishing coat hydrophilic fumed silica addition
Parts by weight are less than the addition parts by weight of hydrophilic fumed silica in priming paint, the addition parts by weight of aqueous levelling agent in priming paint
Less than the addition parts by weight of aqueous levelling agent in finishing coat, specifically in the present embodiment in finishing coat aqueous levelling agent addition weight
The ratio of the addition parts by weight of aqueous levelling agent is 2: 1 in number and priming paint, the addition of hydrophilic fumed silica in finishing coat
The ratio of the addition parts by weight of hydrophilic fumed silica is 1: 2 in parts by weight and priming paint.
When preparing priming paint in the present embodiment, by using hydrophilic fumed silica, aqueous liquid auxiliary rheological agents and fit
Suitable aqueous levelling agent matches, and meets priming paint normal elevation construction and sagging and does not keep the demand of preferable levelability, simultaneously
Necessary guarantee is provided for wet shot wet trade technique；Specifically, hydrophilic fumed silica is come to the surface by it in the present embodiment
And chain structure can provide rheology control ability in liquid system, while also having prevents " photo frame " and " webbing " existing
As the rheology control ability of generation, wet coating can be limited in the microcosmic fortune of curing and drying reaction process floating coat internal component
It is dynamic, improve " holding power " of coating, thus realize be beneficial to paint film wet shot it is wet when not by the effect of finishing coat " stinging erosion "；Suitable water
Property levelling agent can then provide wet paint film surface layer lower surface tension, make up hydrophilic fumed silica in wet film curing of coatings
Holding power function slight flaws that may be present in the process further ensure the performance of the wet technique of paint film wet shot；Aqueous liquid stream
On the one hand becoming auxiliary agent facilitates to ensure coating good stability during storage, be not in significantly to divide water and pigments and fillers
Deposited phenomenon, while also contributing to resist sagging performance of coating during spraying facade；Aqueous defoamer is to meet color
Inhibit in slurry grinding and work progress and bubble microvesicle offer demand is provided, while it is further to introduce a small amount of propylene glycol diacetate
The foaming characteristic for reducing paint film, further increases the surface effect of paint film and improves application property；And pH value adjustment agent and antisepsis and sterilization
The addition of agent helps to ensure the storage stability of coating products, makes to cooperate between each raw material, obtains high comprehensive performance
Priming paint.Similarly, in the preparation process of finishing coat, by hydrophilic fumed silica, aqueous liquid auxiliary rheological agents and it is suitable for
Aqueous levelling agent matches, and the addition parts by weight of hydrophilic fumed silica meet lower than the addition parts by weight in priming paint
The apperance effect requirements of finishing coat, provide necessary guarantee for wet shot wet trade technique, specifically, pass through micro hydrophilic gas
The reduction of aerosil and increasing for aqueous levelling agent parts by weight, the two cooperate, and keep the moisture membrane surface tension of finishing coat bright
The aobvious surface tension lower than priming paint can effectively prevent " mutually string " phenomenon of priming paint finishing coat in drying, while possess better face
Paint is efficiently sprawled on priming paint wet film, to reach the wet good result of wet shot；Aqueous defoamer is to meet mill base grinding and apply
Inhibit during work and bubble microvesicle offer demand is provided, while introducing a small amount of propylene glycol diacetate and further decreasing paint film
Foaming characteristic further increases the surface effect of paint film and improves application property；And pH value adjustment agent and the addition of anticorrosion and bactericidal agent have
The storage stability for helping ensure coating products, makes to cooperate between each raw material, obtains the finishing coat of high comprehensive performance, guarantees
The good appearance effect of product.Cooperation uses water-based hydroxyl acrylic acid secondary breakup body and rutile-type in the present embodiment priming paint
Titanium dioxide has matched high adhesion and high covering power, adhesive force, height needed for providing the wet technique of wet shot to corresponding ground
Covering power and background color, color required for finishing coat provides and corresponding physical index, the two match, and priming paint is with good
Good water resistance, and there is high matching with substrate and finishing coat.
Priming paint provides the excellent effect of forming a connecting link between substrate and finishing coat in the present embodiment, adhesive force outstanding and
Covering power, to improving the flatness of substrate, providing good basis for the high appearance quality of composite coating, top coat layer is then realized
Spanish furnish abundant, meets the bright colors requirement of coating.It is verified, a curing process is applied using conventional regular convention formula two
Film effect afterwards will appear many shrinkage cavities, expose background color, and the priming paint and finishing coat two for using the formula of the present embodiment to prepare
Apply one it is roasting after film effect be finishing coat covering uniformly, no priming paint exposes, no shrinkage cavity, quality be improved significantly.And this implementation
The priming paint and finishing coat of example do not need per pass coating all baking-curings, improve production efficiency, reduce and be produced into matching
Sheet, while coating wet film can also be reduced and integrally exposed to the open air in production environment excessively for a long time, improve dry film surface cleanness.
Embodiment 2
The wettable preparation method for squirting water paint of one kind of the present embodiment, coating includes priming paint and finishing coat, substantially with real
Example 1 is applied, the difference is that the present embodiment indsole enamel-cover includes the raw material of following parts by weight:
In the present embodiment the priming paint the preparation method is as follows:
A, prepare raw material according to above-mentioned formula ratio, by water-based hydroxyl acrylic acid secondary breakup body under the conditions of 500 revs/min
The agent of 0.2-0.4 parts by weight pH value adjustment is added (according to selected water-based hydroxyl acrylic acid secondary breakup in stirring under agitation
The pH value of body determines additive amount), aqueous dispersion, aqueous defoamer, deionized water, anticorrosion and bactericidal agent, rutile type titanium white,
After adding, after mixture is stirred 12min under the conditions of 1000 revs/min, it is small to be ground to fineness for hydrophilic fumed silica
In 10 microns；
B, the mixture that step A is obtained is stirred under the conditions of 500 revs/min, is added under agitation according to formula ratio
Enter aqueous levelling agent, aqueous liquid auxiliary rheological agents and propylene glycol diacetate, obtain former paint after mixing evenly, original paint is used
150 mesh filter screens, which filter, is made priming paint.
Finishing coat includes the raw material of following parts by weight in the present embodiment:
Hydrophilic gas phase two in the addition parts by weight of hydrophilic fumed silica and priming paint in finishing coat in the present embodiment
The ratio of the addition parts by weight of silica is 1: 2.1, in finishing coat the addition parts by weight of aqueous levelling agent with it is aqueous in priming paint
The ratio of the addition parts by weight of levelling agent is 3: 1, and the conductivity of deionized water used in priming paint and finishing coat is 20us/cm.
Finishing coat is made in accordance with the following methods in the present embodiment:
Step a, prepare raw material according to above-mentioned formula ratio, by water-based hydroxyl acrylic acid secondary breakup body in 500 revs/min of items
It is stirred under part, the agent of 0.2-0.4 parts by weight pH value adjustment is added under agitation (according to selected water-based hydroxyl acrylic acid second level
The pH value of dispersion determines additive amount), aqueous dispersion, aqueous defoamer, deionized water, anticorrosion and bactericidal agent, organic pigment and
Mixture is stirred 12min after adding under the conditions of 1000 revs/min, carried out after uniform stirring by hydrophilic fumed silica
Fineness is ground to less than 10 microns；
B, mixture obtained above is added to aqueous levelling agent, aqueous liquid stream under 500 revs/min of stirring condition
Become auxiliary agent and propylene glycol diacetate, obtain former paint after mixing evenly, original paint is filtered using 150 mesh filter screens, finishing coat is made.
Embodiment 3
The wettable preparation method for squirting water paint of one kind of the present embodiment, coating includes priming paint and finishing coat, substantially with real
Example 1 is applied, the difference is that the present embodiment indsole enamel-cover includes the raw material of following parts by weight:
In the present embodiment the priming paint the preparation method is as follows:
A, prepare raw material according to above-mentioned formula ratio, by water-based hydroxyl acrylic acid secondary breakup body under the conditions of 700 revs/min
The agent of 0.2-0.4 parts by weight pH value adjustment is added (according to selected water-based hydroxyl acrylic acid secondary breakup in stirring under agitation
The pH value of body determines additive amount), aqueous dispersion, aqueous defoamer, deionized water, anticorrosion and bactericidal agent, rutile type titanium white,
After adding, after mixture is stirred 15min under the conditions of 1200 revs/min, it is small to be ground to fineness for hydrophilic fumed silica
In 10 microns；
B, the mixture that step A is obtained is stirred under the conditions of 700 revs/min, is added under agitation according to formula ratio
Enter aqueous levelling agent, aqueous liquid auxiliary rheological agents and propylene glycol diacetate, obtain former paint after mixing evenly, original paint is used
250 mesh filter screens, which filter, is made priming paint.
Finishing coat includes the raw material of following parts by weight in the present embodiment:
The addition parts by weight of hydrophilic fumed silica and hydrophilic gas phase dioxy in priming paint in the present embodiment finishing coat
The ratio of the addition parts by weight of SiClx is 1: 2, the addition parts by weight of aqueous levelling agent and aqueous levelling in priming paint in finishing coat
The ratio of the addition parts by weight of agent is 2: 1, and the conductivity of deionized water used in priming paint and finishing coat is 10us/cm.
Finishing coat is made in accordance with the following methods in the present embodiment:
Step a, prepare raw material according to above-mentioned formula ratio, by water-based hydroxyl acrylic acid secondary breakup body in 700 revs/min of items
It is stirred under part, the agent of 0.2-0.4 parts by weight pH value adjustment is added under agitation (according to selected water-based hydroxyl acrylic acid second level
The pH value of dispersion determines additive amount), aqueous dispersion, aqueous defoamer, deionized water, anticorrosion and bactericidal agent, organic pigment and
Mixture is stirred 15min after adding under the conditions of 1200 revs/min, carried out after uniform stirring by hydrophilic fumed silica
Fineness is ground to less than 10 microns；
B, mixture obtained above is added to aqueous levelling agent, aqueous liquid stream under 700 revs/min of stirring condition
Become auxiliary agent and propylene glycol diacetate, obtain former paint after mixing evenly, original paint is filtered using 250 mesh filter screens, finishing coat is made.
Raw material composition as shown in table 1 below for priming paint in above three embodiments:
1 priming paint raw material of table composition
Raw material composition as shown in table 2 below for finishing coat in above three embodiments:
2 finishing coat raw material of table composition
The coating that the present embodiment is prepared is in use, priming paint is matched with finishing coat, and the specific method is as follows:
Step 1: by priming paint and general waterborne curing agent and deionized water according to (3-5): (1-2): 1 uniformly allotment；
Step 2: by finishing coat and general waterborne curing agent and deionized water according to (2-4): (1-2): 1 uniformly allotment；
Step 3: by deployed basecoat paint in workpiece surface, room temperature levelling 1-3min；
Step 4: deployed finishing coat is sprayed on prime coat, the dry 20-30min of two coating room temperature levellings；Then exist
Solidification baking 25-35min, forms paint film coating system under the conditions of 80 ± 5 DEG C.
Wherein step 1 and the requirement of step 2 out-of-order, general waterborne curing agent used are water-based isocyanate solidification
Agent specifically includes the raw material of following parts by weight: being based on 40-50 parts of IPDI hydrophilic modifying aliphatic polymeric isocyanate；Based on HDI parent
40-50 parts of water modified aliphatic polyisocyanate；5-15 parts of propylene glycol diacetate；The preparation method of general waterborne curing agent
Are as follows: the raw material of above-mentioned recipe ratio is uniformly mixed at least 10min, can be prepared by general waterborne curing agent.It is used go from
The conductivity of sub- water is similarly 0.1-20us/cm.
Specifically in the present embodiment the general waterborne curing agent then include following parts by weight raw material: change based on IPDI is hydrophilic
45 parts of aliphatic polymeric isocyanate of property；Based on 45 parts of HDI hydrophilic modifying aliphatic polymeric isocyanate；Propylene glycol diacetate 10
Part.Coating in use, by priming paint and general waterborne curing agent and deionized water according to 4: 1: 1 uniformly allotments, by finishing coat with it is general
Waterborne curing agent and deionized water are according to 3: 1: 1 uniformly allotments, by deployed basecoat paint in workpiece surface, room temperature levelling
1min；Deployed finishing coat is sprayed on prime coat, the dry 20min of two coating room temperature levellings；Then solid under the conditions of 75 DEG C
Change baking 25min, forms paint film coating system.The coating of the present embodiment is in use, be successively sprayed at workpiece for priming paint and finishing coat
Surface, without to priming paint drying or pre-baked, two coatings after spraying disposable baking can form paint film coating system, it is wet in wet shot
Using very convenient in construction.
Comparative example 1
The coating of this comparative example includes priming paint and finishing coat, and wherein priming paint includes the raw material of following parts by weight:
Substantially same above-described embodiment of the preparation method of priming paint in this comparative example, according to above-mentioned formula ratio by water-based hydroxyl propylene
PH value adjustment agent, aqueous dispersion, aqueous defoamer is added in sour secondary breakup body under 300-700 revs/min of stirring condition
A, deionized water, anticorrosion and bactericidal agent and rutile type titanium white after adding, stir 10- under the conditions of 700-1200 revs/min
Then 15min is ground to fineness less than 10 microns；Obtained mixture is added under 300-700 revs/min of stirring condition again
Enter aqueous defoamer b, aqueous levelling agent, aqueous liquid auxiliary rheological agents a, aqueous liquid auxiliary rheological agents b and propylene glycol diacetate,
After mixing evenly, it is filtered using 150-250 mesh filter screen, priming paint is made.
Finishing coat includes the raw material of following parts by weight in this comparative example:
Substantially same above-described embodiment of the preparation method of finishing coat in this comparative example, according to above-mentioned formula ratio by water-based hydroxyl propylene
PH value adjustment agent is added under 300-700 revs/min of stirring condition, aqueous dispersion, aqueous defoamer a, goes for sour dispersion
Ionized water, anticorrosion and bactericidal agent and organic red pigment after adding, stir 10-15min, so under the conditions of 700-1200 revs/min
After be ground to fineness less than 10 microns；Aqueous disappear is added in obtained mixture under 300-700 revs/min of stirring condition again
Infusion b, aqueous levelling agent, aqueous liquid auxiliary rheological agents a, aqueous liquid auxiliary rheological agents b and propylene glycol diacetate, uniform stirring
It is filtered afterwards using 150-250 mesh filter screen, finishing coat is made.
Comparative example 2
The coating of this comparative example includes priming paint and finishing coat, substantially with comparative example 1, the difference is that priming paint includes following heavy
Measure the raw material of part:
Finishing coat includes the raw material of following parts by weight in this comparative example:
Such as the raw material composition that the following table 3 is priming paint in above-mentioned two comparative example:
The raw material of 3 priming paint of table forms
Such as the raw material composition that the following table 4 is finishing coat in above-mentioned two comparative example:
The raw material of 4 finishing coat of table forms
By above-described embodiment 1-3 and comparative example 1 and 2 priming paint being prepared and finishing coat respectively with it is matched general aqueous
After curing agent and deionized water allotment, it is sprayed at related ground, priming paint and finishing coat user in specific method reference embodiment 3
Method detects paint film property after forming paint film coating, and testing result is as shown in table 5 below.
5 paint film property test result of table
The examination criteria of above each performance is as follows:
Be adapted to the performance of spraying: good dispersion when priming paint, finishing coat spraying, levelability is moderate, and thixotropy is good, and coating is equal
It is even, without obvious tangerine peel, without pinprick bubble, free from admixture exist；The open defects such as no sag, show-through, loss of gloss；
Hardness of paint film >=HB Mitsubishi pencil；
Adhesive force test: hundred lattice methods of testing should fall off without chipping, and nothing falls off in coating grid, oil-free varnish stain on 3M adhesive tape；
Gloss: measurement of luster value >=85 (60 °)；
It is resistance to soaked: by template periphery edge sealing, to be placed in 23 ± 2 DEG C of neutral sinks, take out, restore 2 hours after soaked 7 days
After test, painting layer face should be without blister without expansion, and without falling off, no loss of gloss phenomenon, adhesive force tests≤0 grade；
Acid resistance (25 DEG C × 24H), paint film is without blistering under the conditions of 0.1NH2SO4, without falling off, no obvious loss of gloss discoloration；
Alkali resistance (25 DEG C × 7d), 0.1NNaoH, 23 ± 2 DEG C × 7d, paint film changes colour without obvious loss of gloss, blisters, expanding, is de-
It falls；
Resistance to artificial accelerated aging: ultraviolet aging, 500h, film efflorescence≤1 grade, paint film loss of gloss≤1 grade, paint film discoloration
≤ 2 grades, paint film cracking≤1 grade.
Above-described embodiment processes coating obtained, and priming paint and finishing coat are met the following requirements: priming paint and finishing coat are water
Property environmental protection dual-component polyurethane cold curing paint, environmental protection meet European Union's ROHS harmful substance limitation instruction, meet system with
Environmental requirement；Free from dust, particle, impurity in appearance, coating good fluidity do not join at drawing skin shape or solidification glue；Storage period room temperature
Under do not open the coating shelf-life not less than 12 months, the shelf-life is not less than 6 months after unlatching.
Embodiment 4
The wettable preparation method for squirting water paint of one kind of the present embodiment, coating includes priming paint and finishing coat, substantially with real
Example 1 is applied, the difference is that the present embodiment indsole enamel-cover includes the raw material of following parts by weight:
Finishing coat includes the raw material of following parts by weight in the present embodiment:
Hydrophilic gas phase two in the addition parts by weight of hydrophilic fumed silica and priming paint in finishing coat in the present embodiment
The ratio of the addition parts by weight of silica is 1: 2；The addition parts by weight of aqueous levelling agent and aqueous flow in priming paint in finishing coat
The ratio of the addition parts by weight of flat agent is 1.5: 1.
Coating that the present embodiment is prepared in use, priming paint is matched with finishing coat, specially by priming paint with it is general aqueous
Curing agent and deionized water are according to 3: 2: 1 uniformly allotments；According to 2: 1: 1 by finishing coat and general waterborne curing agent and deionized water
It is even to match, by deployed basecoat paint after workpiece surface, room temperature levelling 3min, deployed finishing coat is sprayed at prime coat
On, the dry 30min of two coating room temperature levellings；Then solidification baking 35min under the conditions of 85 DEG C, forms paint film coating system.
General waterborne curing agent used in it is water-based isocyanate curing agent, specifically includes the original of following parts by weight
Material: it is based on 40 parts of IPDI hydrophilic modifying aliphatic polymeric isocyanate；Based on 40 parts of HDI hydrophilic modifying aliphatic polymeric isocyanate；
5 parts of propylene glycol diacetate.
Embodiment 5
The wettable preparation method for squirting water paint of one kind of the present embodiment, coating includes priming paint and finishing coat, substantially with real
Example 1 is applied, the difference is that the present embodiment indsole enamel-cover includes the raw material of following parts by weight:
Finishing coat includes the raw material of following parts by weight in the present embodiment:
Hydrophilic gas phase two in the addition parts by weight of hydrophilic fumed silica and priming paint in finishing coat in the present embodiment
The ratio of the addition parts by weight of silica is 1: 2.5, in finishing coat the addition parts by weight of aqueous levelling agent with it is aqueous in priming paint
The ratio of the addition parts by weight of levelling agent is 3: 1.
Coating that the present embodiment is prepared in use, priming paint is matched with finishing coat, specially by priming paint with it is general aqueous
Curing agent and deionized water are according to 5: 2: 1 uniformly allotments；According to 4: 2: 1 by finishing coat and general waterborne curing agent and deionized water
It is even to match, by deployed basecoat paint after workpiece surface, room temperature levelling 2min, deployed finishing coat is sprayed at prime coat
On, the dry 25min of two coating room temperature levellings；Then solidification baking 30min under the conditions of 80 DEG C, forms paint film coating system.
General waterborne curing agent used in it is water-based isocyanate curing agent, specifically includes the original of following parts by weight
Material: it is based on 50 parts of IPDI hydrophilic modifying aliphatic polymeric isocyanate；Based on 50 parts of HDI hydrophilic modifying aliphatic polymeric isocyanate；
15 parts of propylene glycol diacetate.
Embodiment 6
The wettable preparation method for squirting water paint of one kind of the present embodiment, coating includes priming paint and finishing coat, substantially with real
Example 1 is applied, the difference is that the present embodiment indsole enamel-cover includes the raw material of following parts by weight:
Finishing coat includes the raw material of following parts by weight in the present embodiment:
Hydrophilic gas phase two in the addition parts by weight of hydrophilic fumed silica and priming paint in finishing coat in the present embodiment
The ratio of the addition parts by weight of silica is 1: 5, the addition parts by weight of aqueous levelling agent and aqueous flow in priming paint in finishing coat
The ratio of the addition parts by weight of flat agent is 1.5: 1.
Coating that the present embodiment is prepared is in use, priming paint is matched with finishing coat, substantially same above-described embodiment, and institute is different
, by priming paint and general waterborne curing agent and deionized water according to 5: 1: 1 uniformly allotments in the present embodiment；By finishing coat with it is general
Waterborne curing agent and deionized water are according to 4: 1: 1 uniformly allotments.
Embodiment 7
The wettable preparation method for squirting water paint of one kind of the present embodiment, coating includes priming paint and finishing coat, substantially with real
Example 1 is applied, the difference is that the present embodiment indsole enamel-cover includes the raw material of following parts by weight:
Finishing coat includes the raw material of following parts by weight in the present embodiment:
Hydrophilic gas phase two in the addition parts by weight of hydrophilic fumed silica and priming paint in finishing coat in the present embodiment
The ratio of the addition parts by weight of silica is 1: 1.2, in finishing coat the addition parts by weight of aqueous levelling agent with it is aqueous in priming paint
The ratio of the addition parts by weight of levelling agent is 2.5: 1.
Coating that the present embodiment is prepared is in use, priming paint is matched with finishing coat, substantially same above-described embodiment, and institute is different
, by priming paint and general waterborne curing agent and deionized water according to 5: 1.5: 1 uniformly allotments in the present embodiment；By finishing coat and lead to
With waterborne curing agent and deionized water according to 4: 1.5: 1 uniformly allotments.
Schematically the present invention and embodiments thereof are described above, description is not limiting, institute in attached drawing
What is shown is also one of embodiments of the present invention, and actual structure is not limited to this.So if the common skill of this field
Art personnel are enlightened by it, without departing from the spirit of the invention, are not inventively designed and the technical solution
Similar frame mode and embodiment, are within the scope of protection of the invention.
Claims (10)
1. a kind of wettable preparation method for squirting water paint, it is characterised in that: the preparation including priming paint and finishing coat, priming paint according to
Following methods are made:
A, prepare raw material, aqueous dispersion, aqueous defoaming is added in water-based hydroxyl acrylic acid secondary breakup body under agitation
Agent, deionized water, anticorrosion and bactericidal agent, rutile type titanium white and hydrophilic fumed silica, mixture uniform stirring is ground
Fineness is milled to less than 10 microns；
B, aqueous levelling agent, aqueous liquid auxiliary rheological agents and propylene glycol two is added in mixture obtained above under agitation
Acetate obtains former paint after mixing evenly, original paint is filtered using 150-250 mesh filter screen, priming paint is made；
Finishing coat is made in accordance with the following methods:
A, prepare raw material, aqueous dispersion, aqueous defoaming is added in water-based hydroxyl acrylic acid secondary breakup body under agitation
Agent, deionized water, anticorrosion and bactericidal agent, organic pigment and hydrophilic fumed silica, mixture uniform stirring is ground to carefully
Degree is less than 10 microns；
B, aqueous levelling agent, aqueous liquid auxiliary rheological agents and propylene glycol two is added in mixture obtained above under agitation
Acetate obtains former paint after mixing evenly, original paint is filtered using 150-250 mesh filter screen, finishing coat is made.
2. the wettable preparation method for squirting water paint of one kind according to claim 1, it is characterised in that: will in step A
Water-based hydroxyl acrylic acid secondary breakup body stirs under the conditions of 300-700 revs/min and other raw materials is added, and after adding, will mix
Material is closed to stir 10-15min under the conditions of 700-1200 revs/min and then ground；By mixture in 300-700 in step B
It is stirred under the conditions of rev/min and other raw materials is added.
3. the wettable preparation method for squirting water paint of one kind according to claim 1, it is characterised in that: will in step a
Water-based hydroxyl acrylic acid secondary breakup body stirs under the conditions of 300-700 revs/min and other raw materials is added, will mixing after adding
Material stirs 10-15min under the conditions of 700-1200 revs/min, is then ground；By mixture in 300-700 in step b
It is stirred under the conditions of rev/min and other raw materials is added.
4. the wettable preparation method for squirting water paint of one kind according to claim 1, it is characterised in that: hydrophilic in priming paint
Addition parts by weight of the addition parts by weight of type fumed silica more than hydrophilic fumed silica in finishing coat.
5. the wettable preparation method for squirting water paint of one kind according to claim 1 or 4, it is characterised in that: in finishing coat
The ratio of the addition parts by weight of hydrophilic fumed silica in the addition parts by weight and priming paint of hydrophilic fumed silica
Value is 1: (1.2-5).
6. the wettable preparation method for squirting water paint of one kind according to claim 5, it is characterised in that: hydrophilic in finishing coat
The ratio of the addition parts by weight of hydrophilic fumed silica is 1 in the addition parts by weight and priming paint of type fumed silica
∶(2-2.5)。
7. the wettable preparation method for squirting water paint of one kind according to claim 1 or 4, it is characterised in that: in priming paint
The addition parts by weight of aqueous levelling agent are less than the addition parts by weight of aqueous levelling agent in finishing coat, the addition of aqueous levelling agent in finishing coat
The ratio of the addition parts by weight of aqueous levelling agent is (1.5-3) in parts by weight and priming paint: 1.
8. the wettable preparation method for squirting water paint of one kind according to claim 1, it is characterised in that: priming paint include with
The raw material of lower parts by weight:
9. the wettable preparation method for squirting water paint of one kind according to claim 1 or 8, it is characterised in that: finishing coat packet
Include the raw material of following parts by weight:
10. the wettable preparation method for squirting water paint of described in any item one kind according to claim 1, it is characterised in that: go
The conductivity range of ionized water is in 0.1-20us/cm.
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN112940597A (en) * | 2021-02-05 | 2021-06-11 | 信和新材料股份有限公司 | Water-based secondary hydroxyl acrylic polyurethane finish paint for wet spraying process and preparation method thereof |
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