CN109705709A - High-performance resistance and fingerprint resistance colored precoating plate easy to clean and preparation method thereof - Google Patents
High-performance resistance and fingerprint resistance colored precoating plate easy to clean and preparation method thereof Download PDFInfo
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Abstract
The invention discloses a kind of high-performance resistance and fingerprint resistance colored precoating plates easy to clean, including cold-rolled steel sheet, the front surface coated of cold-rolled steel sheet has top coat layer, and top coat layer is made of the raw material of following parts by weight: 40-50 parts of Hydroxylated acrylic resin, 10-20 parts of pigment, 5-10 parts of filler, 2-10 parts of butyl acetate, 15-20 parts of hexamethylene diisocyanate, 2-5 parts of amido silicon oil, 2-3 parts of antibacterial agent, 0.2-0.3 parts of dispersing agent, 0.5-1 parts of anti-settling agent, 0.2-0.3 parts of levelling agent；The invention also discloses the preparation methods of the precoating plate.The present invention uses substrate of the high-quality cold-rolled steel sheet as precoating plate, surface of cold-rolled steel plate is high-quality, dimensional accuracy is high, it makes annealing treatment in addition, its mechanical performance and processing performance are superior to hot rolled steel sheet, and are coated with a level paint layer on the surface of cold-rolled steel sheet, and top coat layer makes precoating plate have the excellent performance such as resistance and fingerprint resistance, easy to clean, antibacterial, it is applied to household electrical appliances, the service life of household electrical appliances can be significantly improved.
Description
Technical field
The invention belongs to precoating plate manufacturing technology fields, and in particular, to a kind of high-performance resistance and fingerprint resistance is easy to clean colored pre-
Coated plate and preparation method thereof.
Background technique
In recent years, with the breakthrough of LCD Technology, LCD TV product field is quickly grown, and quickly to big ruler
Very little specification is expanded, the variation of dimensions, has been caused to the quality such as television backboard intensity, thermal diffusivity, anti-leak electromagnetic wave spy
The demand of property.In order to solve this technical problem, and to further decrease production cost, some TV enterprises or its backboard supplier
Beginning seeks steel mill successively and directly produces liquid crystal display television back by color coating process, generally VCM plate or the PCM plate being often used.
Color coated steel sheet is a kind of steel plate with organic coating, commonly referred to as PCM plate, currently, the damp-heat of coastal area
It waits and brings serious atmospheric corrosion effect to steel product, to improve corrosion resistance of steel, mainly have increase alloy member at present
Element and the big approach of external coating corrosion-inhibiting coating two, it is exactly stainless steel that the former is most widely used, and the latter is then with various galvanized sheets, plating
Zinc-aluminium composite plate, paint precoating plate are representative.Zinc coat and the paint of coating be inherently by use resistant material as
Insulating surface gets up perishable base protection.
But it is a series of in washing machine, refrigerator, refrigerator-freezer, micro-wave oven, set-top box, solar water heater, lamps and lanterns, television set etc.
In Outside panel for home electrical appliances, especially with television set outside plate quality requirement highest, it is desirable that have perfect appearance, have deep drawing quality, anti-finger printing, lead
Electrically, the mass propertys such as frivolous property requirement, technology controlling and process is sufficiently complex, and production process control is extremely unstable, single VCM or
PCM plate is all difficult to meet the quality requirement of high-end customer.
Summary of the invention
The purpose of the present invention is to provide a kind of high-performance resistance and fingerprint resistance colored precoating plates easy to clean and preparation method thereof, pass through
Substrate using high-quality cold-rolled steel sheet as precoating plate, surface of cold-rolled steel plate is high-quality, and dimensional accuracy is high, in addition at annealing
Reason, mechanical performance and processing performance are superior to hot rolled steel sheet, suitable for manufacturing the household electrical appliances of high quality, and in cold-rolled steel sheet
Surface is coated with a level paint layer, and top coat layer makes precoating plate have the excellent performance such as resistance and fingerprint resistance, easy to clean, antibacterial, by it
Applied to household electrical appliances, the service life of household electrical appliances can be significantly improved.
The purpose of the present invention can be achieved through the following technical solutions:
High-performance resistance and fingerprint resistance colored precoating plate easy to clean, including cold-rolled steel sheet, the front surface coated of cold-rolled steel sheet have top coat layer, finishing coat
Layer with a thickness of 20-30um；
The top coat layer is made of the raw material of following parts by weight: 40-50 parts of Hydroxylated acrylic resin, 10-20 parts of pigment, filler 5-
10 parts, 2-10 parts of butyl acetate, 15-20 parts of hexamethylene diisocyanate, 2-5 parts of amido silicon oil, 2-3 parts of antibacterial agent, dispersion
0.2-0.3 parts of agent, 0.5-1 parts of anti-settling agent, 0.2-0.3 parts of levelling agent；
The high-performance resistance and fingerprint resistance colored precoating plate easy to clean is made of following steps:
Step 1: preparing coating needed for top coat layer
1) Hydroxylated acrylic resin, dispersing agent, anti-settling agent, pigment, filler and antibacterial agent are sequentially added sufficiently mixed in stirred tank
It closes, 300r/min persistently stirs 60min；
2) transfer to and be ground to fineness≤20 μm in sand mill, be slow added into butyl acetate, stir evenly, when viscosity extremely
Levelling agent is added after 2500-3500mPas, obtains component A；
3) component A and hexamethylene diisocyanate are mixed and stirred for uniformly；
Step 2: cold-rolled steel sheet substrate pre-processes
Cold-rolled steel sheet is cut into required specification, and is washed into required shape, first cleans surface of steel plate with dimethylbenzene, then with anhydrous
Ethyl alcohol cleans surface of cold-rolled steel plate, and dries；
Step 3: roller coating priming paint
Roller coating epoxy resin primer is distinguished on two surfaces of cold-rolled steel sheet, and is put into drying in curing oven, then at water cooling
It manages and uses hot-air blowing；
The priming paint with a thickness of 8-14 μm；
Step 5: roller coating finishing coat
The roller coating finishing coat again in a surface primer layer of cold-rolled steel sheet, then water cooling treatment and hot wind processing, are made described pre-
Coated plate.
Further, the filler includes talcum powder, calcium carbonate and rutile type titanium white, talcum powder, calcium carbonate and gold
Red stone-type titanium dioxide is that 3:1-2:0.3-0.5 is compounded according to middle mass ratio；It is good that moderate viscosity, physicochemical property can be made
Good benzene-free type polyurethane finish coating.
Further, the antibacterial agent is prepared by the following method:
1) it weighs 2.86g sodium peroxydisulfate to be added in 180mL distilled water, then 0.03g dodecyl benzene sulfonic acid is added in stirring and dissolving
Sodium continues stirring and dissolving, and the NaOH solution of 5mol/L is added dropwise into solution, adjusts the pH value of solution to 12.4-12.6, and rapidly
It is warming up to 60 DEG C；
2) AgNO of 0.1mol/L is added dropwise with the speed of 2.80mL/min3120mL is added dropwise in solution, during which using 5mol/L's
NaOH solution maintains the pH value of reaction system constant in 12.4-12.6, and 60 DEG C of constant temperature continue to stir 30min after dripping off, and filter, and uses
Distilled water, which sufficiently washs, to be precipitated to until filtrate is in neutrality, and gained precipitating is placed in 85 DEG C of vacuum ovens dry 22h, is made
Nano phase ag_2 o；
3) it weighs 10.8g polyvinyl alcohol to be added in 100mL distilled water, it is nano oxidized to be further continued for addition 0.54g for heating stirring dissolution
Silver and 1.8g sorbester p17, ultrasonic 30min form lotion；
4) under the at the uniform velocity stirring of 1000r/min, above-mentioned emulsion is added drop-wise in 500mL deionized water with the speed of 2mL/min, is dripped
After adding, 60 DEG C are slowly heated to, continues constant temperature and stirs 55min, then precipitating is washed with deionized 4-5 times in filtering, do
Antibacterial agent is made in dry, ground 80 mesh.
The preparation method of high-performance resistance and fingerprint resistance colored precoating plate easy to clean, includes the following steps:
Step 1: preparing coating needed for top coat layer
1) Hydroxylated acrylic resin, dispersing agent, anti-settling agent, pigment, filler and antibacterial agent are sequentially added sufficiently mixed in stirred tank
It closes, 300r/min persistently stirs 60min；
2) transfer to and be ground to fineness≤20 μm in sand mill, be slow added into butyl acetate, stir evenly, when viscosity extremely
Levelling agent is added after 2500-3500mPas, obtains component A；
3) component A and hexamethylene diisocyanate are mixed and stirred for uniformly；
Step 2: cold-rolled steel sheet substrate pre-processes
Cold-rolled steel sheet is cut into required specification, and is washed into required shape, first cleans surface of steel plate with dimethylbenzene, then with anhydrous
Ethyl alcohol cleans surface of cold-rolled steel plate, and dries；
Step 3: roller coating priming paint
Roller coating epoxy resin primer is distinguished on two surfaces of cold-rolled steel sheet, and is put into drying in curing oven, then at water cooling
It manages and uses hot-air blowing；
The priming paint with a thickness of 8-14 μm；
Step 5: roller coating finishing coat
The roller coating finishing coat again in a surface primer layer of cold-rolled steel sheet, then water cooling treatment and hot wind processing, are made described pre-
Coated plate.
Beneficial effects of the present invention:
Top coat layer of the invention is using Hydroxylated acrylic resin as matrix resin, and hexamethylene diisocyanate is as solidification
Agent, Hydroxylated acrylic resin hydroxy radical content is high, and the space network of high crosslink density can be formed with isocyanate curing agent,
Improve the hardness of paint film, adhesive force improves；
Meanwhile the present invention joined a small amount of amido silicon oil in top coat layer, active hydrogen and isocyanates reaction in amido silicon oil
Organosilicon and polyurethane polyureas are unified afterwards, and polysiloxanes segment (PDMS) easily turns to coating surface during coating dry solidification
It moves, substantially reduces surface energy；Addition amido silicon oil can not change fluororesin and polyurethane finish is most important weather-proof old substantially
Change performance and coating surface energy and coefficient of friction are effectively reduced simultaneously；The molecule both ends of amido silicon oil be respectively provided with hydrophilic radical and
Lipophilic group, for such coating after drying and forming-film, this active material can float on film coated surface, and lipophilic group connects coating surface
Resin, other end hydrophilic radical are arranged in coating most external and directly contact atmosphere outside, this Organosilicon Polymers (amino
Silicone oil) it can on the surface that polyurethane coating surface can not only reduce coating, moreover it is possible to allow oleophylic pollutant on hydrophilic additive surface
Attachment loosely, is washed away by water together with hydrophilic pollutant and is washed off, so that precoating plate has characteristic easy to clean；
The present invention is also added into oxidation silver-series antibacterial agent in top coat layer, and the antibacterial agent is using polymer encapsulation, with department
Disk 80 be emulsifier, be prepared using polyvinyl alcohol as shell wall, nano phase ag_2 o be core microcapsules；Nanometer Ag O antibacterial
It includes Ag that agent, which discharges silver ion when contacting with liquid,3+And Ag+, these silver ions have positive charge can attract it is negatively charged
Microorganism contacts, and silver ion can inhibit the synthesis of the main component peptide glycan of cell wall in contact process, makes microorganism
Cell wall integrity destroyed, cause its death；Meanwhile antibacterial agent is microcapsules, the high polymer shell of outer layer can both mention
The dispersing characteristic of high nano phase ag_2 o, and surface coating layer is able to maintain with the presence of enough holes, silver oxide can be slow by gap
Slow release is released, and antagonistic property is played, so that AgO antibacterial agent has good slow release characteristic；The addition of antibacterial agent is so that coating
With good bacteriostasis property；
The present invention uses substrate of the high-quality cold-rolled steel sheet as precoating plate, and surface of cold-rolled steel plate is high-quality, and dimensional accuracy is high, then plus
Annealing, mechanical performance and processing performance are superior to hot rolled steel sheet, suitable for manufacturing the household electrical appliances of high quality, and cold
The surface of rolled steel plate is coated with a level paint layer, and top coat layer makes precoating plate have the excellent property such as resistance and fingerprint resistance, easy to clean, antibacterial
Can, it is applied to household electrical appliances, the service life of household electrical appliances can be significantly improved.
Specific embodiment
Technical solution of the present invention is clearly and completely described below in conjunction with embodiment, it is clear that described reality
Applying example is only a part of the embodiment of the present invention, instead of all the embodiments.Based on the embodiments of the present invention, this field is general
Logical technical staff all other embodiment obtained without creative efforts belongs to what the present invention protected
Range.
High-performance resistance and fingerprint resistance colored precoating plate easy to clean, including cold-rolled steel sheet (substrate), the front surface coated of cold-rolled steel sheet have
Top coat layer, top coat layer with a thickness of 20-30um；
The top coat layer is made of the raw material of following parts by weight: 40-50 parts of Hydroxylated acrylic resin, 10-20 parts of pigment, filler 5-
10 parts, 2-10 parts of butyl acetate, 15-20 parts of hexamethylene diisocyanate (curing agent), 2-5 parts of amido silicon oil, antibacterial agent 2-3
Part, 0.2-0.3 parts of dispersing agent, 0.5-1 parts of anti-settling agent, 0.2-0.3 parts of levelling agent；
The Hydroxylated acrylic resin is HypomerFS-4080F, and hydroxy radical content is high, can form height with isocyanate curing agent
The space network of crosslink density improves the hardness of paint film, and adhesive force improves；
The filler includes talcum powder, calcium carbonate and rutile type titanium white, and talcum powder, calcium carbonate and rutile type titanium white are pressed
It is that 3:1-2:0.3-0.5 is compounded according to middle mass ratio；The poly- ammonia of the good benzene-free type of moderate viscosity, physicochemical property can be made
Ester topcoat paint；
The dispersing agent is fatty acid dispersing agent；
The anti-settling agent is hydrophobic type gas phase silica anti-settling agent；
The levelling agent is esters of acrylic acid levelling agent；
Organosilicon and polyurethane polyureas are unified after active hydrogen and isocyanates reaction in amido silicon oil, polysiloxanes segment
(PDMS) it is easily shifted to coating surface during coating dry solidification, substantially reduces surface energy；Adding amido silicon oil can be basic
Do not change fluororesin and the most important weatherable performance of polyurethane finish while coating surface energy and friction system is effectively reduced
Number；The molecule both ends of amido silicon oil are respectively provided with hydrophilic radical and lipophilic group, and such coating is after drying and forming-film, this activity
Substance can float on film coated surface, and lipophilic group connects coating surface resin, and it is straight that other end hydrophilic radical is arranged in coating most external
Contact atmosphere outside, this Organosilicon Polymers (amido silicon oil) can not only reduce coating on polyurethane coating surface
It surface can, moreover it is possible to it allows oleophylic pollutant to adhere to loosely on hydrophilic additive surface, is washed away and wash off by water together with hydrophilic pollutant,
So that precoating plate has characteristic easy to clean；
The antibacterial agent is prepared by the following method:
1) it weighs 2.86g sodium peroxydisulfate to be added in 180mL distilled water, then 0.03g dodecyl benzene sulfonic acid is added in stirring and dissolving
Sodium continues stirring and dissolving, and the NaOH solution of 5mol/L is added dropwise into solution, adjusts the pH value of solution to 12.4-12.6, and rapidly
It is warming up to 60 DEG C；
2) AgNO of 0.1mol/L is added dropwise with the speed of 2.80mL/min3120mL is added dropwise in solution, during which using 5mol/L's
NaOH solution maintains the pH value of reaction system constant in 12.4-12.6, and 60 DEG C of constant temperature continue to stir 30min after dripping off, and filter, and uses
Distilled water, which sufficiently washs, to be precipitated to until filtrate is in neutrality, and gained precipitating is placed in 85 DEG C of vacuum ovens dry 22h, is made
Nano phase ag_2 o；
Nano phase ag_2 o obtained is black powder solid, partial size 150-200nm；
3) it weighs 10.8g polyvinyl alcohol to be added in 100mL distilled water, it is nano oxidized to be further continued for addition 0.54g for heating stirring dissolution
Silver and 1.8g sorbester p17, ultrasonic 30min form lotion；
4) under the at the uniform velocity stirring of 1000r/min, above-mentioned emulsion is added drop-wise in 500mL deionized water with the speed of 2mL/min, is dripped
After adding, 60 DEG C are slowly heated to, continues constant temperature and stirs 55min, then precipitating is washed with deionized 4-5 times in filtering, do
Antibacterial agent is made in dry, ground 80 mesh；
The antibacterial agent be using polymer encapsulation, using sorbester p17 as emulsifier, be prepared using polyvinyl alcohol as shell wall,
Nano phase ag_2 o is the microcapsules of core；Silver oxide can generally also claim Ag2O2, there are 4 silver atoms in the molecule, wherein 2
Silver atoms are monovalencies, and another 2 are trivalents, and in the presence of powder is in the form of silver oxide, bactericidal property is substantially better than Ag and Ag2O,
In conjunction with nanotechnology, the antibacterial ability of high oxidation state silver is dozens or even hundreds of times of common silver-colored class；Nanometer Ag O antibacterial agent with
Release silver ion includes Ag when liquid contacts3+And Ag+, these silver ions, which have positive charge, can attract negatively charged microorganism
It contacts, silver ion can inhibit the synthesis of the main component peptide glycan of cell wall in contact process, make the cell of microorganism
Wall integrity is destroyed, its death is caused；Meanwhile antibacterial agent is microcapsules, nanometer both can be improved in the high polymer shell of outer layer
The dispersing characteristic of silver oxide, and surface coating layer is able to maintain with the presence of enough holes, silver oxide can pass through gap slow release
Out, antagonistic property is played, so that AgO antibacterial agent has good slow release characteristic；
The preparation method of the high-performance resistance and fingerprint resistance colored precoating plate easy to clean, includes the following steps:
Step 1: preparing coating needed for top coat layer
1) Hydroxylated acrylic resin, dispersing agent, anti-settling agent, pigment, filler and antibacterial agent are sequentially added sufficiently mixed in stirred tank
It closes, 300r/min persistently stirs 60min；
2) it transfers to and is ground to fineness≤20 μm in sand mill, be slow added into butyl acetate, stir evenly, when viscosity (is adopted
Measured with rotational viscometer) to levelling agent is added after 2500-3500mPas, obtain component A；
3) component A and hexamethylene diisocyanate are mixed and stirred for uniformly；
Step 2: cold-rolled steel sheet substrate pre-processes
Cold-rolled steel sheet is cut into required specification, and is washed into required shape, first cleans surface of steel plate with dimethylbenzene, then with anhydrous
Ethyl alcohol cleans surface of cold-rolled steel plate, and dries；
Step 3: roller coating priming paint
Roller coating epoxy resin primer is distinguished on two surfaces of cold-rolled steel sheet, and is put into drying in curing oven, then at water cooling
It manages and uses hot-air blowing；
The priming paint with a thickness of 8-14 μm；
Step 5: roller coating finishing coat
The roller coating finishing coat again in a surface primer layer of cold-rolled steel sheet, then water cooling treatment and hot wind processing, are made described pre-
Coated plate.
Embodiment 1
High-performance resistance and fingerprint resistance colored precoating plate easy to clean, including cold-rolled steel sheet (substrate), the front surface coated of cold-rolled steel sheet have finishing coat
Layer, top coat layer with a thickness of 20um；
The top coat layer is made of the raw material of following parts by weight: 40 parts of Hydroxylated acrylic resin, 10 parts of pigment, 5 parts of filler, acetic acid
It is 2 parts of butyl ester, 15 parts of hexamethylene diisocyanate (curing agent), 2 parts of amido silicon oil, 2 parts of antibacterial agent, 0.2 part of dispersing agent, anti-settling
0.5 part of agent, 0.2 part of levelling agent；
The preparation method of the high-performance resistance and fingerprint resistance colored precoating plate easy to clean, includes the following steps:
Step 1: preparing coating needed for top coat layer
1) Hydroxylated acrylic resin, dispersing agent, anti-settling agent, pigment, filler and antibacterial agent are sequentially added sufficiently mixed in stirred tank
It closes, 300r/min persistently stirs 60min；
2) it transfers to and is ground to fineness≤20 μm in sand mill, be slow added into butyl acetate, stir evenly, when viscosity (is adopted
Measured with rotational viscometer) to levelling agent is added after 2500mPas, obtain component A；
3) component A and hexamethylene diisocyanate are mixed and stirred for uniformly；
Step 2: cold-rolled steel sheet substrate pre-processes
Cold-rolled steel sheet is cut into required specification, and is washed into required shape, first cleans surface of steel plate with dimethylbenzene, then with anhydrous
Ethyl alcohol cleans surface of cold-rolled steel plate, and dries；
Step 3: roller coating priming paint
Roller coating epoxy resin primer is distinguished on two surfaces of cold-rolled steel sheet, and is put into drying in curing oven, then at water cooling
It manages and uses hot-air blowing；
The priming paint with a thickness of 8 μm；
Step 5: roller coating finishing coat
The roller coating finishing coat again in a surface primer layer of cold-rolled steel sheet, then water cooling treatment and hot wind processing, are made described pre-
Coated plate.
Embodiment 2
High-performance resistance and fingerprint resistance colored precoating plate easy to clean, including cold-rolled steel sheet (substrate), the front surface coated of cold-rolled steel sheet have finishing coat
Layer, top coat layer with a thickness of 25um；
The top coat layer is made of the raw material of following parts by weight: 45 parts of Hydroxylated acrylic resin, 15 parts of pigment, 8 parts of filler, acetic acid
6 parts of butyl ester, 18 parts of hexamethylene diisocyanate (curing agent), 3.5 parts of amido silicon oil, 2.5 parts of antibacterial agent, dispersing agent 0.25
Part, 0.7 part of anti-settling agent, 0.25 part of levelling agent；
The preparation method of the high-performance resistance and fingerprint resistance colored precoating plate easy to clean, includes the following steps:
Step 1: preparing coating needed for top coat layer
1) Hydroxylated acrylic resin, dispersing agent, anti-settling agent, pigment, filler and antibacterial agent are sequentially added sufficiently mixed in stirred tank
It closes, 300r/min persistently stirs 60min；
2) it transfers to and is ground to fineness≤20 μm in sand mill, be slow added into butyl acetate, stir evenly, when viscosity (is adopted
Measured with rotational viscometer) to levelling agent is added after 3000mPas, obtain component A；
3) component A and hexamethylene diisocyanate are mixed and stirred for uniformly；
Step 2: cold-rolled steel sheet substrate pre-processes
Cold-rolled steel sheet is cut into required specification, and is washed into required shape, first cleans surface of steel plate with dimethylbenzene, then with anhydrous
Ethyl alcohol cleans surface of cold-rolled steel plate, and dries；
Step 3: roller coating priming paint
Roller coating epoxy resin primer is distinguished on two surfaces of cold-rolled steel sheet, and is put into drying in curing oven, then at water cooling
It manages and uses hot-air blowing；
The priming paint with a thickness of 11 μm；
Step 5: roller coating finishing coat
The roller coating finishing coat again in a surface primer layer of cold-rolled steel sheet, then water cooling treatment and hot wind processing, are made described pre-
Coated plate.
Embodiment 3
High-performance resistance and fingerprint resistance colored precoating plate easy to clean, including cold-rolled steel sheet (substrate), the front surface coated of cold-rolled steel sheet have finishing coat
Layer, top coat layer with a thickness of 30um；
The top coat layer is made of the raw material of following parts by weight: 50 parts of Hydroxylated acrylic resin, 20 parts of pigment, 10 parts of filler, second
10 parts of acid butyl ester, 20 parts of hexamethylene diisocyanate (curing agent), 5 parts of amido silicon oil, 3 parts of antibacterial agent, 0.3 part of dispersing agent,
1 part of anti-settling agent, 0.3 part of levelling agent；
The preparation method of the high-performance resistance and fingerprint resistance colored precoating plate easy to clean, includes the following steps:
Step 1: preparing coating needed for top coat layer
1) Hydroxylated acrylic resin, dispersing agent, anti-settling agent, pigment, filler and antibacterial agent are sequentially added sufficiently mixed in stirred tank
It closes, 300r/min persistently stirs 60min；
2) it transfers to and is ground to fineness≤20 μm in sand mill, be slow added into butyl acetate, stir evenly, when viscosity (is adopted
Measured with rotational viscometer) to levelling agent is added after 3500mPas, obtain component A；
3) component A and hexamethylene diisocyanate are mixed and stirred for uniformly；
Step 2: cold-rolled steel sheet substrate pre-processes
Cold-rolled steel sheet is cut into required specification, and is washed into required shape, first cleans surface of steel plate with dimethylbenzene, then with anhydrous
Ethyl alcohol cleans surface of cold-rolled steel plate, and dries；
Step 3: roller coating priming paint
Roller coating epoxy resin primer is distinguished on two surfaces of cold-rolled steel sheet, and is put into drying in curing oven, then at water cooling
It manages and uses hot-air blowing；
The priming paint with a thickness of 14 μm；
Step 5: roller coating finishing coat
The roller coating finishing coat again in a surface primer layer of cold-rolled steel sheet, then water cooling treatment and hot wind processing, are made described pre-
Coated plate.
Present invention disclosed above preferred embodiment is only intended to help to illustrate the present invention.There is no detailed for preferred embodiment
All details are described, are not limited the invention to the specific embodiments described.Obviously, according to the content of this specification,
It can make many modifications and variations.These embodiments are chosen and specifically described to this specification, is in order to better explain the present invention
Principle and practical application, so that skilled artisan be enable to better understand and utilize the present invention.The present invention is only
It is limited by claims and its full scope and equivalent.
Claims (4)
1. high-performance resistance and fingerprint resistance colored precoating plate easy to clean, which is characterized in that including cold-rolled steel sheet, the front surface coated of cold-rolled steel sheet
Have a top coat layer, top coat layer with a thickness of 20-30um；
The top coat layer is made of the raw material of following parts by weight: 40-50 parts of Hydroxylated acrylic resin, 10-20 parts of pigment, filler 5-
10 parts, 2-10 parts of butyl acetate, 15-20 parts of hexamethylene diisocyanate, 2-5 parts of amido silicon oil, 2-3 parts of antibacterial agent, dispersion
0.2-0.3 parts of agent, 0.5-1 parts of anti-settling agent, 0.2-0.3 parts of levelling agent；
The high-performance resistance and fingerprint resistance colored precoating plate easy to clean is made of following steps:
Step 1: preparing coating needed for top coat layer
1) Hydroxylated acrylic resin, dispersing agent, anti-settling agent, pigment, filler and antibacterial agent are sequentially added sufficiently mixed in stirred tank
It closes, 300r/min persistently stirs 60min；
2) transfer to and be ground to fineness≤20 μm in sand mill, be slow added into butyl acetate, stir evenly, when viscosity extremely
Levelling agent is added after 2500-3500mPas, obtains component A；
3) component A and hexamethylene diisocyanate are mixed and stirred for uniformly；
Step 2: cold-rolled steel sheet substrate pre-processes
Cold-rolled steel sheet is cut into required specification, and is washed into required shape, first cleans surface of steel plate with dimethylbenzene, then with anhydrous
Ethyl alcohol cleans surface of cold-rolled steel plate, and dries；
Step 3: roller coating priming paint
Roller coating epoxy resin primer is distinguished on two surfaces of cold-rolled steel sheet, and is put into drying in curing oven, then at water cooling
It manages and uses hot-air blowing；
The priming paint with a thickness of 8-14 μm；
Step 5: roller coating finishing coat
The roller coating finishing coat again in a surface primer layer of cold-rolled steel sheet, then water cooling treatment and hot wind processing, are made described pre-
Coated plate.
2. high-performance resistance and fingerprint resistance according to claim 1 colored precoating plate easy to clean, which is characterized in that the filler includes
Talcum powder, calcium carbonate and rutile type titanium white, talcum powder, calcium carbonate and rutile type titanium white are 3 according to middle mass ratio:
1-2:0.3-0.5 is compounded；The good benzene-free type polyurethane finish coating of moderate viscosity, physicochemical property can be made.
3. high-performance resistance and fingerprint resistance according to claim 1 colored precoating plate easy to clean, which is characterized in that the antibacterial agent by
Following method preparation:
1) it weighs 2.86g sodium peroxydisulfate to be added in 180mL distilled water, then 0.03g dodecyl benzene sulfonic acid is added in stirring and dissolving
Sodium continues stirring and dissolving, and the NaOH solution of 5mol/L is added dropwise into solution, adjusts the pH value of solution to 12.4-12.6, and rapidly
It is warming up to 60 DEG C；
2) AgNO of 0.1mol/L is added dropwise with the speed of 2.80mL/min3120mL is added dropwise in solution, during which uses the NaOH of 5mol/L
Solution maintains the pH value of reaction system constant in 12.4-12.6, and 60 DEG C of constant temperature continue to stir 30min, filtering, with distillation after dripping off
Water, which sufficiently washs, to be precipitated to until filtrate is in neutrality, and gained precipitating is placed in 85 DEG C of vacuum ovens dry 22h, nanometer is made
Silver oxide；
3) it weighs 10.8g polyvinyl alcohol to be added in 100mL distilled water, it is nano oxidized to be further continued for addition 0.54g for heating stirring dissolution
Silver and 1.8g sorbester p17, ultrasonic 30min form lotion；
4) under the at the uniform velocity stirring of 1000r/min, above-mentioned emulsion is added drop-wise in 500mL deionized water with the speed of 2mL/min, is dripped
After adding, 60 DEG C are slowly heated to, continues constant temperature and stirs 55min, then precipitating is washed with deionized 4-5 times in filtering, do
Antibacterial agent is made in dry, ground 80 mesh.
4. the preparation method of high-performance resistance and fingerprint resistance colored precoating plate easy to clean, which comprises the steps of:
Step 1: preparing coating needed for top coat layer
1) Hydroxylated acrylic resin, dispersing agent, anti-settling agent, pigment, filler and antibacterial agent are sequentially added sufficiently mixed in stirred tank
It closes, 300r/min persistently stirs 60min；
2) transfer to and be ground to fineness≤20 μm in sand mill, be slow added into butyl acetate, stir evenly, when viscosity extremely
Levelling agent is added after 2500-3500mPas, obtains component A；
3) component A and hexamethylene diisocyanate are mixed and stirred for uniformly；
Step 2: cold-rolled steel sheet substrate pre-processes
Cold-rolled steel sheet is cut into required specification, and is washed into required shape, first cleans surface of steel plate with dimethylbenzene, then with anhydrous
Ethyl alcohol cleans surface of cold-rolled steel plate, and dries；
Step 3: roller coating priming paint
Roller coating epoxy resin primer is distinguished on two surfaces of cold-rolled steel sheet, and is put into drying in curing oven, then at water cooling
It manages and uses hot-air blowing；
The priming paint with a thickness of 8-14 μm；
Step 5: roller coating finishing coat
The roller coating finishing coat again in a surface primer layer of cold-rolled steel sheet, then water cooling treatment and hot wind processing, are made described pre-
Coated plate.
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Cited By (6)
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| CN110317511A (en) * | 2019-07-02 | 2019-10-11 | 苏州大林金属制品有限公司 | A kind of resistance and fingerprint resistance layer and preparation method for shelf |
| CN110482380A (en) * | 2019-08-16 | 2019-11-22 | 杭州普络飞新材料科技有限公司 | A kind of elevator PCM plate and its production technology |
| CN111718648A (en) * | 2020-06-03 | 2020-09-29 | 挪亚家家具（广东）有限公司 | Water-based finish paint and fingerprint-free paint spraying process |
| CN111871742A (en) * | 2020-07-31 | 2020-11-03 | 安徽迎驾贡酒股份有限公司 | Double-side roller coating process of color-coated aluminum coil for wine bottle cap |
| CN113337203A (en) * | 2021-07-17 | 2021-09-03 | 江西安鹏家具有限公司 | Coating formula and processing technology for furniture surface antibiosis |
| RU2787282C1 (en) * | 2022-01-12 | 2023-01-09 | Нлмк Интернэшнл Б.В. | Steel sheet with antimicrobial polymer coating |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| CN110317511A (en) * | 2019-07-02 | 2019-10-11 | 苏州大林金属制品有限公司 | A kind of resistance and fingerprint resistance layer and preparation method for shelf |
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| CN111718648A (en) * | 2020-06-03 | 2020-09-29 | 挪亚家家具（广东）有限公司 | Water-based finish paint and fingerprint-free paint spraying process |
| CN111871742A (en) * | 2020-07-31 | 2020-11-03 | 安徽迎驾贡酒股份有限公司 | Double-side roller coating process of color-coated aluminum coil for wine bottle cap |
| CN113337203A (en) * | 2021-07-17 | 2021-09-03 | 江西安鹏家具有限公司 | Coating formula and processing technology for furniture surface antibiosis |
| RU2787282C1 (en) * | 2022-01-12 | 2023-01-09 | Нлмк Интернэшнл Б.В. | Steel sheet with antimicrobial polymer coating |
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Application publication date: 20190503 |