CN109762446A - Water-base epoxy graphene zinc anticorrosive paint, preparation method and application - Google Patents
Water-base epoxy graphene zinc anticorrosive paint, preparation method and application Download PDFInfo
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Abstract
The invention discloses a kind of water-base epoxy graphene zinc anticorrosive paints, including component one and component two, wherein, the component one includes following component in parts by weight: 5-10 parts of aqueous epoxy resin curing agent, 0.5-1 parts of dispersing agent, 1-3 parts of anti-settling agent, 1-3 parts of coalescing agent, 10-15 parts of extender pigment, 42-65 parts of zinc powder and 4.5-5 parts of graphene dispersion slurry；The component two includes following component in parts by weight: 30-40 parts of aqueous epoxy emulsion, 1-2 parts of anti-flash rusting agent, 5-15 parts of water and 0.2-0.8 parts of defoaming agent.Water-base epoxy graphene zinc anticorrosive paint zinc powder utilization rate of the invention is high; it is easily prepared, and the properties of coating formed is excellent, such as compactness is good, cathodic protection performance and shielding properties are excellent; antiseptic property is obviously improved, and has wide application prospect in offshore equipment corrosion-resistant field.
Description
Technical field
The present invention relates to a kind of anticorrosive paint more particularly to a kind of water-base epoxy graphene zinc anticorrosive paints, its preparation side
Method and application.
Background technique
Marine environment is harsh corrosive environment, and (such as container, ocean are flat for the various steel constructions being on active service in marine environment
Platform, port and pier etc.), if not using effective preventive means, will occur to corrode and damage and bring sternly in a short time
The consequence of weight.China's offshore equipment anticorrosive paint is substantially based on solvent based coating, big in coating in preparation and work progress
The volatile organic solvent (VOC) of amount not only has seriously polluted the environment and compromises human health, while also causing pole to resource
Big waste, runs in the opposite direction with low-carbon economy growth requirement.Therefore, the research for carrying out low-VOC aqueous anticorrosive paint, has agreed with country
Green environmental protection industry idea of development has the sustainable development for promoting enterprise technology Transformation Development and Environmental Protection in China paint industry
It is of great importance.
Epoxy zinc-enriched paint is one of most widely used anticorrosive paint, its protection mechanism includes two aspects: being first
Cathodic protection, since the electrode potential of zinc is lower than iron, zinc powder can preferentially be corroded, to play a protective role to steel matrix；Separately
It on the one hand is shielding barrier, zine corrosion can generate the complex of extremely difficult molten zinc salt and zinc, these stable compound depositions exist
Coating surface prevents corrosive medium to penetrate into matrix surface.Increase zinc content facilitate improve zinc-rich coating salt water resistance,
Salt spray corrosion resistance, but the excessively high adhesive force that can cause coating of zinc content is deteriorated, impact resistance and wearability reduce, at
The problems such as this raising.In addition, excessively high serious, the meeting when carrying out the technique such as cutting that will lead to zinc powder settling in zinc rich paint of zinc content
More zinc oxide fumes are generated, are detrimental to health.Therefore zinc-rich paint just develops towards the direction of low zinc content, it is important to
The content of zinc powder is reduced in the case where not influencing coating antiseptic performance.
In view of the above problems, it is necessary to provide a kind of novel aqueous graphite-epoxy alkene zinc anticorrosive paints.
Summary of the invention
The main purpose of the present invention is to provide a kind of water-base epoxy graphene zinc anticorrosive paint, preparation method and answer
With to overcome deficiency in the prior art.
For realization aforementioned invention purpose, the technical solution adopted by the present invention includes:
The embodiment of the invention provides a kind of water-base epoxy graphene zinc anticorrosive paints, including component one and component two；
Wherein, the component one includes following component in parts by weight: 5-10 parts of aqueous epoxy resin curing agent,
0.5-1 parts of dispersing agent, 1-3 parts of anti-settling agent, 1-3 parts of coalescing agent, 10-15 parts of extender pigment, 42-65 parts of zinc powder and graphene point
Dissipate slurry 4.5-5 parts；
The component two includes following component in parts by weight: 30-40 parts of aqueous epoxy emulsion, anti-flash rusting agent 1-
2 parts, 5-15 parts of water and 0.2-0.8 parts of defoaming agent.
The embodiment of the present invention also provides the preparation method of the water-base epoxy graphene zinc anticorrosive paint, comprising:
Aqueous epoxy resin curing agent, dispersing agent, anti-settling agent and coalescing agent are mixed, form mixture, then by graphite
Alkene dispersed paste, extender pigment and zinc powder are mixed with the mixture, obtain component one；
Aqueous epoxy emulsion, anti-flash rusting agent, water and defoaming agent are mixed, component two is obtained；
Obtained component one is uniformly mixed with component two, forms the water-base epoxy graphene zinc anticorrosive paint.
The embodiment of the present invention also provides a kind of coating formed by the water-base epoxy graphene zinc anticorrosive paint.
The embodiment of the present invention also provides the water-base epoxy graphene zinc anticorrosive paint in carbon steel or galvanized steel preservative treatment
In purposes.
The embodiment of the present invention also provides a kind of carbon steel or galvanized steel means of defence, comprising: in carbon steel or zinc-plated steel substrate table
Face coats the water-base epoxy graphene zinc anticorrosive paint, and makes the anticorrosive paint film-forming.
Compared with prior art, the beneficial effect comprise that
(1) the reasonably combined gap that can effectively fill between zinc powder of super-fine zinc dust and common partial size zinc powder promotes coating
Compactness improves the shielding action to corrosive medium, increases the conductive path of zinc powder, improves zinc powder utilization rate, improves zinc powder and applies
The cathodic protection performance of layer, promotes salt water resistance, the salt spray corrosion resistance of zinc powder coating.
(2) graphene is a kind of excellent two-dimentional conductive material, and the conduction that can increase zinc powder with zinc powder synergistic effect is logical
Road improves zinc powder utilization rate, can significantly improve the cathodic protection performance of zinc powder coating, can be in the feelings for not influencing coating antiseptic performance
The content that zinc powder is reduced under condition, improves coating adhesion, impact resistance, wearability, reduces cost；Graphene is generally acknowledged at present
Most thin shielding material can extend the diffusion path of corrosive medium in the coating, effectively obstruct the infiltration of corrosive medium.Water of the present invention
Each parts by weight of component matches in property graphite-epoxy alkene zinc anticorrosive paint, and coating antiseptic performance can be substantially improved.
(3) water-base epoxy graphene zinc anticorrosive paint of the invention is easily prepared, has excellent performance, and leads in offshore equipment anti-corrosion
Domain has wide application prospect.
Detailed description of the invention
In order to more clearly explain the embodiment of the invention or the technical proposal in the existing technology, to embodiment or will show below
There is attached drawing needed in technical description to be briefly described, it should be apparent that, the accompanying drawings in the following description is only this
The some embodiments recorded in invention, for those of ordinary skill in the art, without creative efforts,
It is also possible to obtain other drawings based on these drawings.
Fig. 1 is that 4 medium carbon steel sample of the embodiment of the present invention carries out 0 hour picture of salt fog；
Fig. 2 is the picture after 4 medium carbon steel sample of the embodiment of the present invention carries out salt fog 1200 hours.
Specific embodiment
In view of deficiency in the prior art, inventor is studied for a long period of time and is largely practiced, and is able to propose of the invention
Technical solution.The technical solution, its implementation process and principle etc. will be further explained as follows.
A kind of water-base epoxy graphene zinc anticorrosive paint provided in an embodiment of the present invention, including component one and component two；
Wherein, the component one includes following component in parts by weight: 5-10 parts of aqueous epoxy resin curing agent,
0.5-1 parts of dispersing agent, 1-3 parts of anti-settling agent, 1-3 parts of coalescing agent, 10-15 parts of extender pigment, 42-65 parts of zinc powder and graphene point
Dissipate slurry 4.5-5 parts；
The component two includes following component in parts by weight: 30-40 parts of aqueous epoxy emulsion, anti-flash rusting agent 1-
2 parts, 5-15 parts of water and 0.2-0.8 parts of defoaming agent.
In some embodiments, the zinc powder includes the common zinc powder of 40-55 parts by weight and 2-10 parts by weight super-fine zinc dust.
In some embodiments, the partial size of the common zinc powder is 18-25 microns (500-800 mesh), the ultra-fine zinc
The partial size of powder is 0.5-1 microns.
In foregoing embodiments, super-fine zinc dust and the reasonably combined of common partial size zinc powder can be filled effectively between zinc powder
Gap promotes coating compactness, increases the conductive path of zinc powder, improves zinc powder utilization rate.
In some embodiments, the anti-settling agent includes any in fumed silica, polyamide wax and bentonite
A combination of one or more.
In some embodiments, the coalescing agent includes propylene glycol monomethyl ether, propandiol butyl ether, in dipropylene glycol methyl ether
Any one or two or more combinations.
In some embodiments, the extender pigment includes any one in talcum powder, mica powder and blanc fixe
Kind or two or more combinations.
In some embodiments, the dispersion solution in the graphene dispersion slurry includes ethyl alcohol, butyl glycol second
Any one in acid esters and propylene glycol monomethyl ether or two or more combinations.
Graphene powder obtains graphene dispersion slurry after dispersion solution is added after ultrasonic disperse, and the addition of graphene is not
The cathodic protection performance that zinc-rich coating can only be significantly improved, can also play preferable shielding action, it is possible to reduce corrosive medium
Infiltration in the coating.
Further, antirust agent is preferably 1.5 parts, and defoaming agent is preferably 0.5 part.
Wherein, aqueous epoxy resin curing agent and aqueous epoxy emulsion can be purchased from Hexion Specialty Chemicals company, dispersing agent
It can be profound new purchased from the U.S..Graphene powder can be purchased from Ningbo Mo Xi Science and Technology Ltd. in graphene dispersion slurry.It is ultra-fine
Zinc powder is purchased from Beijing Deco Dao Jin Science and Technology Ltd..
The embodiment of the present invention also provides the preparation method of the water-base epoxy graphene zinc anticorrosive paint, comprising:
Aqueous epoxy resin curing agent, dispersing agent, anti-settling agent and coalescing agent are mixed, form mixture, then by graphite
Alkene dispersed paste, extender pigment and zinc powder are mixed with the mixture, obtain component one；
Aqueous epoxy emulsion, anti-flash rusting agent, water and defoaming agent are mixed, component two is obtained；
Obtained component one is uniformly mixed with component two, forms the water-base epoxy graphene zinc anticorrosive paint.
In some embodiments, the preparation of component one specifically includes: by aqueous epoxy resin curing agent, dispersing agent, preventing
Heavy agent and coalescing agent mixing, revolving speed 400-600r/min disperse 5-10min, form mixture, then by graphene dispersion slurry
It is added in mixture, revolving speed 800-1000r/min disperses 5-10min, and extender pigment and zinc powder, revolving speed 1000- are added later
2000r/min disperses 20-30min, obtains component one.
In some embodiments, further includes: obtained component one is uniformly mixed with component two, water is added as solvent or diluent,
Fineness≤40 μm are detected, the water-base epoxy graphene zinc anticorrosive paint is formed.
In some specific embodiments, the preparation method of water-base epoxy graphene zinc anticorrosive paint includes:
Aqueous epoxy resin curing agent is put into reaction kettle, dispersing agent, anti-settling agent and coalescing agent, revolving speed are sequentially added
400-600r/min disperses 5min；Graphene dispersion slurry is added in mixture, revolving speed 800-1000r/min disperses 5min；
Filler and blended zinc powder is then added, revolving speed 1000-2000r/min disperses 20min, obtains component one.Component two is aqueous ring
Oxygen lotion, anti-flash rusting agent, defoaming agent and water mixture, obtained component one is uniformly mixed with component two, be added suitable quantity of water make
For solvent or diluent, detects fineness and reach≤40 μm, form the water-base epoxy graphene zinc anticorrosive paint.
The embodiment of the present invention also provides a kind of coating formed by the water-base epoxy graphene zinc anticorrosive paint.
The embodiment of the present invention also provides the water-base epoxy graphene zinc anticorrosive paint in carbon steel or galvanized steel preservative treatment
In purposes.
The embodiment of the present invention also provides a kind of carbon steel or galvanized steel means of defence, comprising: in carbon steel or zinc-plated steel substrate table
Face coats the water-base epoxy graphene zinc anticorrosive paint, and makes the anticorrosive paint film-forming.
Water-base epoxy graphene zinc anticorrosive paint provided by the invention and preparation method thereof, by introducing graphene conductive point
Slurry is dissipated, reasonable preparation zinc powder particle size ratio optimizes conductive network between zinc powder, improves zinc powder utilization rate, significantly improves painting
The cathodic protection performance of layer provides long-effective corrosion protection for offshore equipment etc..
Below with reference to several preferred embodiments, further details of the technical solution of the present invention, it is clear that described
Embodiment be only a part of the embodiment of the present invention, instead of all the embodiments.Based on the embodiments of the present invention, ability
Domain those of ordinary skill every other embodiment obtained without making creative work, belongs to the present invention
The range of protection.The implementation condition used in following embodiment can do further adjustment according to actual needs, be not specified
Implementation condition is usually the condition in routine experiment.
Embodiment 1:
By 5 parts of aqueous epoxy curing agents, 0.5 part of dispersing agent, 0.5 part of fumed silica, 0.25 part of polyamide wax, 0.25
In the metal can that part bentonite, 1 part of propylene glycol monomethyl ether are successively put into, it is dispersed with stirring about 10min in 400-600r/min, is applied
Expect semi-finished product；
By 0.2 part of graphene, 2.3 parts of butyl glycol acetates, 2 parts of propylene glycol monomethyl ethers, after being uniformly mixed, then surpass
Sound disperses 2h, obtains graphene dispersion slurry；
4.5 parts of above-mentioned graphene dispersion slurries are dispersed with stirring about 5min in 800-1000r/min, aforementioned coatings half are added
In finished product, sequentially add 2.5 parts of talcum powder, 2.5 parts of mica powders, 5 parts of blanc fixes, 40 parts of common zinc powders and 2 parts it is ultra-fine
Zinc powder, revolving speed 1000-2000r/min are dispersed with stirring about 20min, and water-base epoxy graphene zinc anticorrosive paint product can be obtained
First component Parts；
30 parts of aqueous epoxy emulsions are added 1 part of anti-flash rusting agent, 5 parts of water, 0.2 part of defoaming agent can obtain after uniform stirring
To the second component Parts of water-base epoxy graphene zinc anticorrosive paint product；
Gained first component is mixed with second component, is stirred evenly, water-base epoxy graphene zinc anticorrosive paint can be obtained.
1 is shown in Table by the adhesive force of its coating formed, impact resistance, salt spray resistance.
Embodiment 2:
By 10 parts of aqueous epoxy curing agents, 1 part of dispersing agent, 1.5 parts of fumed silicas, 0.75 part of polyamide wax, 0.75
In the metal can that part bentonite, 3 parts of propylene glycol monomethyl ethers are successively put into, it is dispersed with stirring about 10min in 400-600r/min, is applied
Expect semi-finished product；
By 0.7 part of graphene, 2.3 parts of butyl glycol acetates, 2 parts of propylene glycol monomethyl ethers, after being uniformly mixed, then surpass
Sound disperses 2h, obtains graphene dispersion slurry；
5 parts of above-mentioned graphene dispersion slurries are dispersed with stirring about 10min in 800-1000r/min, aforementioned coatings half are added
In finished product, sequentially add 2.5 parts of talcum powder, 2.5 parts of mica powders, 10 parts of blanc fixes, 55 parts of common zinc powders and 10 parts it is super
Thin zinc powder, revolving speed 1000-2000r/min are dispersed with stirring about 20min, and water-base epoxy graphene zinc anticorrosive paint product can be obtained
First component Parts；
40 parts of aqueous epoxy emulsions are added 2 parts of anti-flash rusting agent, 15 parts of water, 0.8 part of defoaming agent can obtain after uniform stirring
To the second component Parts of water-base epoxy graphene zinc anticorrosive paint product；
Gained first component is mixed with second component, is stirred evenly, water-base epoxy graphene zinc anticorrosive paint can be obtained.
1 is shown in Table by the adhesive force of its coating formed, impact resistance, salt spray resistance.
Embodiment 3:
By 7.5 parts of aqueous epoxy curing agents, 0.75 part of dispersing agent, 1 part of fumed silica, 0.5 part of polyamide wax, 0.5
In the metal can that part bentonite, 2 parts of propylene glycol monomethyl ethers are successively put into, it is dispersed with stirring about 10min in 400-600r/min, is applied
Expect semi-finished product；
By 0.45 part of graphene, 2.3 parts of butyl glycol acetates, 2 parts of propylene glycol monomethyl ethers, after being uniformly mixed, then
Ultrasonic disperse 2h obtains graphene dispersion slurry；
4.75 parts of above-mentioned graphene dispersion slurries are dispersed with stirring about 8min in 800-1000r/min, aforementioned coatings are added
In semi-finished product, 2.5 parts of talcum powder, 2.5 parts of mica powders, 7.5 parts of blanc fixes, 45.5 parts of common zinc powders and 6 are sequentially added
Part super-fine zinc dust, revolving speed 1000-2000r/min are dispersed with stirring about 20min, water-base epoxy graphene zinc anticorrosive paint can be obtained
The first component Parts of product；
35 parts of aqueous epoxy emulsions are added 1.5 parts of anti-flash rusting agent, 10 parts of water, 0.5 part of defoaming agent, after uniform stirring
Obtain the second component Parts of water-base epoxy graphene zinc anticorrosive paint product；
Gained first component is mixed with second component, is stirred evenly, water-base epoxy graphene zinc anticorrosive paint can be obtained.
1 is shown in Table by the adhesive force of its coating formed, impact resistance, salt spray resistance.
Embodiment 4:
By 7 parts of aqueous epoxy curing agents, 0.6 part of dispersing agent, 1.2 parts of fumed silicas, 0.6 part of polyamide wax, 0.6 part
In the metal can that bentonite, 2.5 parts of propylene glycol monomethyl ethers are successively put into, it is dispersed with stirring about 5min in 400-600r/min, is applied
Expect semi-finished product；
By 0.5 part of graphene, 2.3 parts of butyl glycol acetates, 2 parts of propylene glycol monomethyl ethers, after being uniformly mixed, then surpass
Sound disperses 2h, obtains graphene dispersion slurry；
4.8 parts of above-mentioned graphene dispersion slurries are dispersed with stirring about 8min in 800-1000r/min, aforementioned coatings half are added
In finished product, sequentially add 2.5 parts of talcum powder, 2.5 parts of mica powders, 8 parts of blanc fixes, 52 parts of common zinc powders and 8 parts it is ultra-fine
Zinc powder, revolving speed 1000-2000r/min are dispersed with stirring about 30min, and water-base epoxy graphene zinc anticorrosive paint product can be obtained
First component Parts；
38 parts of aqueous epoxy emulsions are added 1.5 parts of anti-flash rusting agent, 10 parts of water, 0.5 part of defoaming agent, after uniform stirring
Obtain the second component Parts of water-base epoxy graphene zinc anticorrosive paint product；
Gained first component is mixed with second component, is stirred evenly, water is added as solvent or diluent, detects fineness≤40 μm
Obtain water-base epoxy graphene zinc anticorrosive paint.
1 is shown in Table by the adhesive force of its coating formed, impact resistance, salt spray resistance.By coated carbon steel sample into
Row salt mist experiment, 0 hour picture of salt fog are shown in that Fig. 1, the picture after salt fog 1200 hours are shown in that (wherein 2#, 3#, 4# are scratch to Fig. 2
Sample, 1# are not scratched samples).
In embodiment 1-4, the partial size of selected common zinc powder is 18-25 microns, and the partial size of super-fine zinc dust is that 0.5-1 is micro-
Rice.
Comparative example 1
Comparative example 1 and the difference of embodiment 4 are, do not add graphene dispersion slurry and super-fine zinc dust in anticorrosive paint,
It is changed to addition constitution filler, remaining is same as Example 4, and water-base epoxy zinc powder anticorrosive paint product can be obtained.
The adhesive force of the coating that water corrosion-resistant epoxy paint prepared by embodiment 1-4 and comparative example 1 is formed, impact resistance,
Salt spray resistance is shown in Table 1.
The detection performance of water corrosion-resistant epoxy paint prepared by 1. embodiment 1-4 of table and comparative example 1
As seen from Table 1, the coating that the water corrosion-resistant epoxy paint that prepared by comparative example 1 is formed, salt spray resistance is poor, and
Adhesive force, impact resistance are also relatively poor.
Water-base epoxy graphene zinc anticorrosive paint provided by the invention and preparation method thereof, significantly improves the cathode of coating
Protective value can provide long-acting anti-corrosion protection.
In addition, inventor also utilizes the alternate embodiments such as listed other raw materials and other process conditions above
Various raw materials and corresponding process conditions in 1-4 have carried out corresponding test, the content of required verifying and with embodiment 1-4 product
It is close.So do not explained one by one to the verifying content of each embodiment, only using embodiment 1-4 as representative explanation herein
The excellent place of the present patent application.
It should be appreciated that above-described is only some embodiments of the present invention, it is noted that for the common of this field
For technical staff, under the premise of not departing from concept of the invention, other modification and improvement can also be made, these are all
It belongs to the scope of protection of the present invention.
Claims (10)
1. a kind of water-base epoxy graphene zinc anticorrosive paint, it is characterised in that including component one and component two；
Wherein, the component one includes following component in parts by weight: 5-10 parts of aqueous epoxy resin curing agent, dispersion
0.5-1 parts of agent, 1-3 parts of anti-settling agent, 1-3 parts of coalescing agent, 10-15 parts of extender pigment, 42-65 parts of zinc powder and graphene dispersion slurry
4.5-5 parts of material；
The component two includes following component in parts by weight: 30-40 parts of aqueous epoxy emulsion, 1-2 parts of anti-flash rusting agent,
5-15 parts of water and 0.2-0.8 parts of defoaming agent.
2. water-base epoxy graphene zinc anticorrosive paint as described in claim 1, it is characterised in that: the zinc powder includes 40-55
The common zinc powder of parts by weight and 2-10 parts by weight super-fine zinc dust.
3. water-base epoxy graphene zinc anticorrosive paint as described in claim 1, it is characterised in that: the partial size of the common zinc powder
It is 18-25 microns, the partial size of the super-fine zinc dust is 0.5-1 microns.
4. water-base epoxy graphene zinc anticorrosive paint as described in claim 1, it is characterised in that: the anti-settling agent includes gas phase
Any one in silica, polyamide wax and bentonite or two or more combinations；And/or the coalescing agent includes
Propylene glycol monomethyl ether, propandiol butyl ether, any one or two or more combinations in dipropylene glycol methyl ether；And/or the constitution
Pigment includes any one or two or more combinations in talcum powder, mica powder and blanc fixe；And/or the graphite
Dispersion solution in alkene dispersed paste includes any one or two kinds in ethyl alcohol, butyl glycol acetate and propylene glycol monomethyl ether
Above combination.
5. such as the preparation method of water-base epoxy graphene zinc anticorrosive paint of any of claims 1-4, feature exists
In including:
Aqueous epoxy resin curing agent, dispersing agent, anti-settling agent and coalescing agent are mixed, form mixture, then graphene is divided
It dissipates slurry, extender pigment and zinc powder to mix with the mixture, obtains component one；
Aqueous epoxy emulsion, anti-flash rusting agent, water and defoaming agent are mixed, component two is obtained；
Obtained component one is uniformly mixed with component two, forms the water-base epoxy graphene zinc anticorrosive paint.
6. the preparation method of water-base epoxy graphene zinc anticorrosive paint as claimed in claim 5, which is characterized in that component one
Preparation specifically includes: aqueous epoxy resin curing agent, dispersing agent, anti-settling agent and coalescing agent being mixed, revolving speed 400-600r/
Min disperses 5-10min, forms mixture, then graphene dispersion slurry is added in mixture, revolving speed 800-1000r/min points
5-10min is dissipated, extender pigment and zinc powder are added later, revolving speed 1000-2000r/min disperses 20-30min, obtains component one.
7. the preparation method of water-base epoxy graphene zinc anticorrosive paint as claimed in claim 5, it is characterised in that further include: it will
Obtained component one is uniformly mixed with component two, and water is added as solvent or diluent, detects fineness≤40 μm, forms the water-base epoxy graphite
Alkene zinc anticorrosive paint.
8. the coating that water-base epoxy graphene zinc anticorrosive paint is formed as described in any one of claim 1-4.
9. water-base epoxy graphene zinc anticorrosive paint is in carbon steel or galvanized steel preservative treatment as described in any one of claim 1-4
In purposes.
10. a kind of carbon steel or galvanized steel means of defence, characterized by comprising: coat right in carbon steel or galvanized steel substrate surface
It is required that water-base epoxy graphene zinc anticorrosive paint described in any one of 1-4, and make the anticorrosive paint film-forming.
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Application publication date: 20190517 |