CN107964659A - A kind of cleansing color coated steel sheet for purification and preparation method thereof - Google Patents
A kind of cleansing color coated steel sheet for purification and preparation method thereof Download PDFInfo
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- CN107964659A CN107964659A CN201711172265.XA CN201711172265A CN107964659A CN 107964659 A CN107964659 A CN 107964659A CN 201711172265 A CN201711172265 A CN 201711172265A CN 107964659 A CN107964659 A CN 107964659A
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- C—CHEMISTRY; METALLURGY
- C23—COATING METALLIC MATERIAL; COATING MATERIAL WITH METALLIC MATERIAL; CHEMICAL SURFACE TREATMENT; DIFFUSION TREATMENT OF METALLIC MATERIAL; COATING BY VACUUM EVAPORATION, BY SPUTTERING, BY ION IMPLANTATION OR BY CHEMICAL VAPOUR DEPOSITION, IN GENERAL; INHIBITING CORROSION OF METALLIC MATERIAL OR INCRUSTATION IN GENERAL
- C23F—NON-MECHANICAL REMOVAL OF METALLIC MATERIAL FROM SURFACE; INHIBITING CORROSION OF METALLIC MATERIAL OR INCRUSTATION IN GENERAL; MULTI-STEP PROCESSES FOR SURFACE TREATMENT OF METALLIC MATERIAL INVOLVING AT LEAST ONE PROCESS PROVIDED FOR IN CLASS C23 AND AT LEAST ONE PROCESS COVERED BY SUBCLASS C21D OR C22F OR CLASS C25
- C23F17/00—Multi-step processes for surface treatment of metallic material involving at least one process provided for in class C23 and at least one process covered by subclass C21D or C22F or class C25
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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
- C09D177/00—Coating compositions based on polyamides obtained by reactions forming a carboxylic amide link in the main chain; Coating compositions based on derivatives of such polymers
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- C—CHEMISTRY; METALLURGY
- C23—COATING METALLIC MATERIAL; COATING MATERIAL WITH METALLIC MATERIAL; CHEMICAL SURFACE TREATMENT; DIFFUSION TREATMENT OF METALLIC MATERIAL; COATING BY VACUUM EVAPORATION, BY SPUTTERING, BY ION IMPLANTATION OR BY CHEMICAL VAPOUR DEPOSITION, IN GENERAL; INHIBITING CORROSION OF METALLIC MATERIAL OR INCRUSTATION IN GENERAL
- C23C—COATING METALLIC MATERIAL; COATING MATERIAL WITH METALLIC MATERIAL; SURFACE TREATMENT OF METALLIC MATERIAL BY DIFFUSION INTO THE SURFACE, BY CHEMICAL CONVERSION OR SUBSTITUTION; COATING BY VACUUM EVAPORATION, BY SPUTTERING, BY ION IMPLANTATION OR BY CHEMICAL VAPOUR DEPOSITION, IN GENERAL
- C23C22/00—Chemical surface treatment of metallic material by reaction of the surface with a reactive liquid, leaving reaction products of surface material in the coating, e.g. conversion coatings, passivation of metals
- C23C22/05—Chemical surface treatment of metallic material by reaction of the surface with a reactive liquid, leaving reaction products of surface material in the coating, e.g. conversion coatings, passivation of metals using aqueous solutions
- C23C22/06—Chemical surface treatment of metallic material by reaction of the surface with a reactive liquid, leaving reaction products of surface material in the coating, e.g. conversion coatings, passivation of metals using aqueous solutions using aqueous acidic solutions with pH less than 6
- C23C22/40—Chemical surface treatment of metallic material by reaction of the surface with a reactive liquid, leaving reaction products of surface material in the coating, e.g. conversion coatings, passivation of metals using aqueous solutions using aqueous acidic solutions with pH less than 6 containing molybdates, tungstates or vanadates
- C23C22/44—Chemical surface treatment of metallic material by reaction of the surface with a reactive liquid, leaving reaction products of surface material in the coating, e.g. conversion coatings, passivation of metals using aqueous solutions using aqueous acidic solutions with pH less than 6 containing molybdates, tungstates or vanadates containing also fluorides or complex fluorides
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- C—CHEMISTRY; METALLURGY
- C23—COATING METALLIC MATERIAL; COATING MATERIAL WITH METALLIC MATERIAL; CHEMICAL SURFACE TREATMENT; DIFFUSION TREATMENT OF METALLIC MATERIAL; COATING BY VACUUM EVAPORATION, BY SPUTTERING, BY ION IMPLANTATION OR BY CHEMICAL VAPOUR DEPOSITION, IN GENERAL; INHIBITING CORROSION OF METALLIC MATERIAL OR INCRUSTATION IN GENERAL
- C23C—COATING METALLIC MATERIAL; COATING MATERIAL WITH METALLIC MATERIAL; SURFACE TREATMENT OF METALLIC MATERIAL BY DIFFUSION INTO THE SURFACE, BY CHEMICAL CONVERSION OR SUBSTITUTION; COATING BY VACUUM EVAPORATION, BY SPUTTERING, BY ION IMPLANTATION OR BY CHEMICAL VAPOUR DEPOSITION, IN GENERAL
- C23C28/00—Coating for obtaining at least two superposed coatings either by methods not provided for in a single one of groups C23C2/00 - C23C26/00 or by combinations of methods provided for in subclasses C23C and C25C or C25D
- C23C28/02—Coating for obtaining at least two superposed coatings either by methods not provided for in a single one of groups C23C2/00 - C23C26/00 or by combinations of methods provided for in subclasses C23C and C25C or C25D only coatings only including layers of metallic material
- C23C28/023—Coating for obtaining at least two superposed coatings either by methods not provided for in a single one of groups C23C2/00 - C23C26/00 or by combinations of methods provided for in subclasses C23C and C25C or C25D only coatings only including layers of metallic material only coatings of metal elements only
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- C—CHEMISTRY; METALLURGY
- C23—COATING METALLIC MATERIAL; COATING MATERIAL WITH METALLIC MATERIAL; CHEMICAL SURFACE TREATMENT; DIFFUSION TREATMENT OF METALLIC MATERIAL; COATING BY VACUUM EVAPORATION, BY SPUTTERING, BY ION IMPLANTATION OR BY CHEMICAL VAPOUR DEPOSITION, IN GENERAL; INHIBITING CORROSION OF METALLIC MATERIAL OR INCRUSTATION IN GENERAL
- C23C—COATING METALLIC MATERIAL; COATING MATERIAL WITH METALLIC MATERIAL; SURFACE TREATMENT OF METALLIC MATERIAL BY DIFFUSION INTO THE SURFACE, BY CHEMICAL CONVERSION OR SUBSTITUTION; COATING BY VACUUM EVAPORATION, BY SPUTTERING, BY ION IMPLANTATION OR BY CHEMICAL VAPOUR DEPOSITION, IN GENERAL
- C23C28/00—Coating for obtaining at least two superposed coatings either by methods not provided for in a single one of groups C23C2/00 - C23C26/00 or by combinations of methods provided for in subclasses C23C and C25C or C25D
- C23C28/02—Coating for obtaining at least two superposed coatings either by methods not provided for in a single one of groups C23C2/00 - C23C26/00 or by combinations of methods provided for in subclasses C23C and C25C or C25D only coatings only including layers of metallic material
- C23C28/027—Coating for obtaining at least two superposed coatings either by methods not provided for in a single one of groups C23C2/00 - C23C26/00 or by combinations of methods provided for in subclasses C23C and C25C or C25D only coatings only including layers of metallic material including at least one metal matrix material comprising a mixture of at least two metals or metal phases or metal matrix composites, e.g. metal matrix with embedded inorganic hard particles, CERMET, MMC.
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- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08K—Use of inorganic or non-macromolecular organic substances as compounding ingredients
- C08K3/00—Use of inorganic substances as compounding ingredients
- C08K3/18—Oxygen-containing compounds, e.g. metal carbonyls
- C08K3/20—Oxides; Hydroxides
- C08K3/22—Oxides; Hydroxides of metals
- C08K2003/2237—Oxides; Hydroxides of metals of titanium
- C08K2003/2241—Titanium dioxide
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- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08K—Use of inorganic or non-macromolecular organic substances as compounding ingredients
- C08K3/00—Use of inorganic substances as compounding ingredients
- C08K3/38—Boron-containing compounds
- C08K2003/387—Borates
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Abstract
The invention discloses a kind of cleansing color coated steel sheet for purification, including substrate, further includes first coat of metal, leather diaphragm layer, prime coat, dope layer, second coat of metal, the second skin membrane, back of the body enamelled coating.The present invention has easy cleaning and resistance to cleans characteristic repeatedly.Using product such as metope made of this colored steel when being stain by dust it is easy to clean, it is sparkling clean after cleaning, not dust-staying dirt；And coating surface is not easy to scratch and destroys in the case where cleaning repeatedly.
Description
Technical field
The present invention relates to field of material technology, more particularly to a kind of cleansing color coated steel sheet for purification and its preparation side
Method.
Background technology
Color painted steel strip refers to the steel plate that organic coating is carried on substrate, is commonly abbreviated as color steel, its is common
Substrate is cold-rolled substrate, hot dip galvanizing substrate and electrogalvanizing substrate；Common coating has polyester, Si modification polyester, segregation difluoro second
Alkene and plastisol etc..Color painted steel strip has corrosion resistance good, and bright in luster, appearance looks elegant, machine-shaping is convenient, intensity
The advantages that height, cost is relatively low, be widely used in the building industry such as household electrical appliances and communications and transportation, particularly construction industry, be mainly used as steel knot
The industry such as structure workshop, airport, storehouse and freezing and the roof wall surface of commercial building and door etc..
At present, with expanding economy, the improvement of people's living standards, there is an urgent need to the color painted steel strip of high quality.
In some application scenarios, not only require Coil Coating Products template smooth, strong, anti-with good bending machining performance, paint film adhesion
Scraping property is high while requires easy cleaning and the resistance to characteristic cleaned repeatedly and with significantly excellent apparent property, that is, requires tool
There are the disadvantages such as fine and smooth bright and clean film coated surface, no point, pin hole, bubble, while it is also desirable to have in some industries nontoxic, environmentally friendly
Characteristic, such as IT industries, food processing industry, the high clean room workshop partition of photovoltaic manufacturing industry；And the making of Cold Chain Logistics industry is cold
Room etc. occurs for storehouse, purification air；And the interior trim of public place of entertainment, exhibition center, ship etc..
The content of the invention
Based on technical problem existing for background technology, the present invention propose a kind of cleansing color coated steel sheet for purification and its
Preparation method.
A kind of cleansing color coated steel sheet for purification proposed by the present invention, including substrate, further include first coat of metal,
One skin membrane, prime coat, dope layer, second coat of metal, the second skin membrane, back of the body enamelled coating.
Preferably, first coat of metal, second coat of metal contain nano silicon dioxide, nano aluminum zinc titanium alloy with
And rare element.
Preferably, first metal layer thickness is 10~15 μm, and second metal layer thickness is 6~10 μm.
Preferably, first coat of metal, the chemical composition of second coat of metal are 0.8wt%~1.5wt% nanometers
SiO2, 1.2wt%~1.5wt% nanometers of Al2O3, 91wt%~94wt%Zn, 2.4wt%~5wt%Al, 1wt%~2wt%
Ti, 0.01wt%~0.05wt%Y, each component content summation are 100wt%, the nanometer Al2O3Grain diameter for 30nm~
60nm, the nano silica particle particle diameter are 20nm~50nm.
Preferably, the leather diaphragm layer, the film agent of the second skin membrane include 45~60g/L of fluorine zirconic acid, metavanadate
40~55g/L, 300~450g/L of magnesium nitrate, 10~30g/L of citric acid, solvent are water.
Preferably, the priming paint layer thickness is 4-6 μm, and the back of the body thickness of paint layer is 5-12 μm, the prime coat, back of the body enamelled coating
It is amino-modified epoxy resin.
Preferably, the dope layer raw materials by weight portion proportioning is as follows：10-30 parts of nitrocellulose, Boratex 15-35
Part, 20-30 parts of n-butyl acetate, 5-25 parts of acrylic acid modified alkyd resin, 80-90 parts of deionized water, 10-20 parts of pigment, just
25-35 parts of butanol, 25-45 parts of polyamide, 30-40 parts of titanium dioxide, 35-45 parts of silica, 4-10 parts of plasticizer, the face
Material uses iron oxide red, iron oxide green or iron oxide yellow, and the plasticizer uses DBP.
A kind of preparation method of cleansing color coated steel sheet for purification, the method comprising the steps of：
S1：Spray degreasing, brush roll grinding and washing process are carried out to substrate；
S2：The upper surface of substrate after handling step S1 plates first coat of metal, lower surface plates the second metal-plated
Layer；
S3：Leather diaphragm layer is coated in the upper surface of substrate after handling step S2, the second skin membrane is coated in lower surface, and
Drying and processing is carried out to the leather diaphragm layer, the second skin membrane；
S4：The upper and lower surface of substrate after step S3 processing is primed and carried on the back paint, and the priming paint and back of the body paint are carried out
Baking and cooling treatment, form prime coat and back of the body enamelled coating；
S5：In the prime coat coating, and it is toasted and cooling treatment, form dope layer.
Preferably, in the step S4, the temperature toasted to priming paint and back of the body paint is 220~230 DEG C, cooling treatment
For contactless cooling, priming paint and back of the body paint are directly cooled down using cooling water.
Preferably, in the step S5, the temperature toasted to coating is 210~220 DEG C.
In the present invention, 1, the corrosion resistance of Al-Zn coated steel be 2-6 times of galvanized steel plain sheet, and since it is with galvanizing
The water-fast corrosivity that plate and hot dip aluminium sheet can not match in excellence or beauty with it, yttrium, titanium play invigoration effect jointly, have strengthen remarkably it is anticorrosive and
Improve heat resistance；
2nd, the thicknesses of layers of film agent reaches nanoscale, and compactness is good, film forming is uniform, and adhesive force is extremely strong, thus corrosion-resistant
Property is strong；
3rd, adhesion, film be bright in luster when coating products stir, good decorating effect, can extensively produce and constantly replace
Current material；
4th, there is easy cleaning and resistance to clean characteristic repeatedly.Using product such as metope made of this colored steel when being stain by dust
Easy to clean, sparkling clean after cleaning, dust-staying is not dirty；And coating surface is not easy to scratch and destroys in the case where cleaning repeatedly.
Brief description of the drawings
Fig. 1 is a kind of structure diagram of cleansing color coated steel sheet for purification；
In figure, 1- substrates, first coats of metal of 2-, 3- leather diaphragms layer, 4- prime coats, 5- dope layers, the second metals of 6-
Coating, the second skin membranes of 7-, 8- back of the body enamelled coatings.
Embodiment
The present invention is made with reference to specific embodiment further to explain.
Embodiment 1
A kind of cleansing color coated steel sheet for purification, including substrate 1, further include first coat of metal 2, leather diaphragm layer 3,
Prime coat 4, dope layer 5, second coat of metal 6, the second skin membrane 7, back of the body enamelled coating 8.
Wherein first coat of metal, second coat of metal contain nano silicon dioxide, nano aluminum zinc titanium alloy and rare
Element, the first metal layer thickness are 10 μm, and second metal layer thickness is 6 μm, first coat of metal, the second metal-plated
Layer chemical composition for 0.8wt% nanosized SiO_2s, 1.2wt% nano-scale aluminas, 93.59wt%Zn, 3.4wt%Al, 1wt%Ti,
0.01wt%Y, each component content summation are 100wt%, and the Al_2O_3 nano-particle particle diameter is 30nm, the nanosized SiO_2
Grain particle diameter is 20nm.
Leather diaphragm layer, the film agent of the second skin membrane include fluorine zirconic acid 45g/L, metavanadate 40g/L, magnesium nitrate
300g/L, citric acid 10g/L, solvent are water.
Priming paint layer thickness is 4 μm, and the back of the body thickness of paint layer is 5 μm, and the prime coat, back of the body enamelled coating are amino-modified epoxy
Resin.
Dope layer raw materials by weight portion proportioning is as follows：10 parts of nitrocellulose, 15 parts of Boratex, n-butyl acetate 20
Part, 5 parts of acrylic acid modified alkyd resin, 80 parts of deionized water, 10 parts of pigment, 25 parts of n-butanol, 25 parts of polyamide, titanium dioxide
30 parts, 35 parts of silica, 4 parts of plasticizer, the pigment uses iron oxide red, and the plasticizer uses DBP.
A kind of preparation method of cleansing color coated steel sheet for purification, the method comprising the steps of：
S1：Spray degreasing, brush roll grinding and washing process are carried out to substrate；
S2：The upper surface of substrate after handling step S1 plates first coat of metal, lower surface plates the second metal-plated
Layer；
S3：Leather diaphragm layer is coated in the upper surface of substrate after handling step S2, the second skin membrane is coated in lower surface, and
Drying and processing is carried out to the leather diaphragm layer, the second skin membrane；
S4：The upper and lower surface of substrate after step S3 processing is primed and carried on the back paint, and the priming paint and back of the body paint are carried out
Baking and cooling treatment, form prime coat and back of the body enamelled coating；
S5：In the prime coat coating, and it is toasted and cooling treatment, form dope layer.
In wherein step S4, the temperature toasted to priming paint and back of the body paint is 220 DEG C, and cooling treatment is contactless cold
But, priming paint is directly cooled down using cooling water and the back of the body paints, in step S5, the temperature toasted to coating is 210 DEG C.
The preparation of coating:Nitrocellulose, polyamide, Boratex are added in deionized water, are heated to 40 DEG C of stirring 3h,
N-butyl acetate, n-butanol, titanium dioxide, silica and DBP are added, is warming up to 50 DEG C with ball mill ball milling 10min, addition
Surplus stock, finished product is both obtained after being warming up to 60 DEG C of stirring 10h.
Embodiment 2
A kind of cleansing color coated steel sheet for purification, including substrate 1, further include first coat of metal 2, leather diaphragm layer 3,
Prime coat 4, dope layer 5, second coat of metal 6, the second skin membrane 7, back of the body enamelled coating 8.
Wherein first coat of metal, second coat of metal contain nano silicon dioxide, nano aluminum zinc titanium alloy and rare
Element, the first metal layer thickness are 15 μm, and second metal layer thickness is 10 μm, first coat of metal, the second metal
The chemical composition of coating is 1.5wt% nanosized SiO_2s, 1.5wt% nano-scale aluminas, 92.55wt%Zn, 2.4wt%Al, 2wt%
Ti, 0.05wt%Y, each component content summation are 100wt%, and the Al_2O_3 nano-particle particle diameter is 60nm, the nanosized SiO_2
Grain diameter is 50nm.
Leather diaphragm layer, the film agent of the second skin membrane include 45~60g/L of fluorine zirconic acid, metavanadate 55g/L, magnesium nitrate
450g/L, citric acid 30g/L, solvent are water.
Priming paint layer thickness is 6 μm, and the back of the body thickness of paint layer is 12 μm, and prime coat, back of the body enamelled coating are amino-modified epoxy tree
Fat.
Dope layer raw materials by weight portion proportioning is as follows：30 parts of nitrocellulose, 35 parts of Boratex, n-butyl acetate 30
Part, 25 parts of acrylic acid modified alkyd resin, 90 parts of deionized water, 20 parts of pigment, 35 parts of n-butanol, 45 parts of polyamide, titanium dioxide
40 parts of titanium, 45 parts of silica, 10 parts of plasticizer, the pigment use iron oxide yellow, and plasticizer uses DBP.
A kind of preparation method of cleansing color coated steel sheet for purification, the method comprising the steps of：
S1：Spray degreasing, brush roll grinding and washing process are carried out to substrate；
S2：The upper surface of substrate after handling step S1 plates first coat of metal, lower surface plates the second metal-plated
Layer；
S3：Leather diaphragm layer is coated in the upper surface of substrate after handling step S2, the second skin membrane is coated in lower surface, and
Drying and processing is carried out to the leather diaphragm layer, the second skin membrane；
S4：The upper and lower surface of substrate after step S3 processing is primed and carried on the back paint, and the priming paint and back of the body paint are carried out
Baking and cooling treatment, form prime coat and back of the body enamelled coating；
S5：In the prime coat coating, and it is toasted and cooling treatment, form dope layer.
In wherein step S4, the temperature toasted to priming paint and back of the body paint is 230 DEG C, and cooling treatment is contactless cold
But, priming paint is directly cooled down using cooling water and the back of the body paints, in step S5, the temperature toasted to coating is 220 DEG C.
The preparation of coating:Nitrocellulose, polyamide, Boratex are added in deionized water, are heated to 45 DEG C of stirring 3h,
N-butyl acetate, n-butanol, titanium dioxide, silica and DBP are added, is warming up to 55 DEG C with ball mill ball milling 10min, addition
Surplus stock, finished product is both obtained after being warming up to 70 DEG C of stirring 8h.
Embodiment 3
A kind of cleansing color coated steel sheet for purification, including substrate 1, further include first coat of metal 2, leather diaphragm layer 3,
Prime coat 4, dope layer 5, second coat of metal 6, the second skin membrane 7, back of the body enamelled coating 8.
Wherein first coat of metal, second coat of metal contain nano silicon dioxide, nano aluminum zinc titanium alloy and rare
Element, the first metal layer thickness are 12 μm, and second metal layer thickness is 8 μm, first coat of metal, the second metal-plated
The chemical composition of layer is 1.0wt% nanosized SiO_2s, 1.3wt% nano-scale aluminas, 92.67wt%Zn, 3.5wt%Al, 1.5wt%
Ti, 0.03wt%Y, each component content summation are 100wt%, and Al_2O_3 nano-particle particle diameter is 45nm, the nano silica particle
Particle diameter is 35nm.
Leather diaphragm layer, the film agent of the second skin membrane include 45~60g/L of fluorine zirconic acid, metavanadate 50g/L, magnesium nitrate
400g/L, citric acid 20g/L, solvent are water.
Priming paint layer thickness is 5 μm, and back of the body thickness of paint layer is 9 μm, and prime coat, back of the body enamelled coating are amino-modified epoxy resin.
Dope layer raw materials by weight portion proportioning is as follows：20 parts of nitrocellulose, 25 parts of Boratex, n-butyl acetate 25
Part, 15 parts of acrylic acid modified alkyd resin, 85 parts of deionized water, 15 parts of pigment, 30 parts of n-butanol, 5 parts of kymene, titanium dioxide
35 parts of titanium, 40 parts of silica, 7 parts of plasticizer, pigment use iron oxide green, and plasticizer uses DBP.
A kind of preparation method of cleansing color coated steel sheet for purification, the method comprising the steps of：
S1：Spray degreasing, brush roll grinding and washing process are carried out to substrate；
S2：The upper surface of substrate after handling step S1 plates first coat of metal, lower surface plates the second metal-plated
Layer；
S3：Leather diaphragm layer is coated in the upper surface of substrate after handling step S2, the second skin membrane is coated in lower surface, and
Drying and processing is carried out to the leather diaphragm layer, the second skin membrane；
S4：The upper and lower surface of substrate after step S3 processing is primed and carried on the back paint, and the priming paint and back of the body paint are carried out
Baking and cooling treatment, form prime coat and back of the body enamelled coating；
S5：In the prime coat coating, and it is toasted and cooling treatment, form dope layer.
In wherein step S4, the temperature toasted to priming paint and back of the body paint is 225 DEG C, and cooling treatment is contactless cold
But, priming paint is directly cooled down using cooling water and the back of the body paints, in step S5, the temperature toasted to coating is 215 DEG C.
The preparation of coating:Nitrocellulose, polyamide, Boratex are added in deionized water, are heated to 40 DEG C of stirring 4h,
N-butyl acetate, n-butanol, titanium dioxide, silica and DBP are added, is warming up to 45 DEG C with ball mill ball milling 15min, addition
Surplus stock, finished product is both obtained after being warming up to 65 DEG C of stirring 6h.
Embodiment 4
A kind of cleansing color coated steel sheet for purification, including substrate 1, further include first coat of metal 2, leather diaphragm layer 3,
Prime coat 4, dope layer 5, second coat of metal 6, the second skin membrane 7, back of the body enamelled coating 8.
Wherein first coat of metal, second coat of metal contain nano silicon dioxide, nano aluminum zinc titanium alloy and rare
Element, the first metal layer thickness are 10 μm, and second metal layer thickness is 10 μm, first coat of metal, the second metal
The chemical composition of coating for 1.5wt% nanosized SiO_2s, 1.2wt% nano-scale aluminas, 91.25wt%Zn, 5wt%Al, 1wt%Ti,
0.05wt%Y, each component content summation are 100wt%, and Al_2O_3 nano-particle particle diameter is 50nm, and nano silica particle particle diameter is
40nm。
Leather diaphragm layer, the film agent of the second skin membrane include fluorine zirconic acid 50g/L, metavanadate 50g/L, magnesium nitrate
450g/L, citric acid 30g/L, solvent are water.
Priming paint layer thickness is 5 μm, and back of the body thickness of paint layer is 8 μm, and prime coat, back of the body enamelled coating are amino-modified epoxy resin.
Dope layer raw materials by weight portion proportioning is as follows：10 parts of nitrocellulose, 35 parts of Boratex, n-butyl acetate 30
Part, 5 parts of acrylic acid modified alkyd resin, 80 parts of deionized water, 10 parts of pigment, 35 parts of n-butanol, 25 parts of polyamide, titanium dioxide
30 parts, 35 parts of silica, 4 parts of plasticizer, the pigment uses iron oxide yellow, and plasticizer uses DBP.
A kind of preparation method of cleansing color coated steel sheet for purification, the method comprising the steps of：
S1：Spray degreasing, brush roll grinding and washing process are carried out to substrate；
S2：The upper surface of substrate after handling step S1 plates first coat of metal, lower surface plates the second metal-plated
Layer；
S3：Leather diaphragm layer is coated in the upper surface of substrate after handling step S2, the second skin membrane is coated in lower surface, and
Drying and processing is carried out to the leather diaphragm layer, the second skin membrane；
S4：The upper and lower surface of substrate after step S3 processing is primed and carried on the back paint, and the priming paint and back of the body paint are carried out
Baking and cooling treatment, form prime coat and back of the body enamelled coating；
S5：In the prime coat coating, and it is toasted and cooling treatment, form dope layer.
In wherein step S4, the temperature toasted to priming paint and back of the body paint is 230 DEG C, and cooling treatment is contactless cold
But, priming paint is directly cooled down using cooling water and the back of the body paints, in step S5, the temperature toasted to coating is 210 DEG C.
The preparation of coating:Nitrocellulose, polyamide, Boratex are added in deionized water, are heated to 45 DEG C of stirring 2h,
N-butyl acetate, n-butanol, titanium dioxide, silica and DBP are added, is warming up to 55 DEG C with ball mill ball milling 12min, addition
Surplus stock, finished product is both obtained after being warming up to 65 DEG C of stirring 8h.
The foregoing is only a preferred embodiment of the present invention, but protection scope of the present invention be not limited thereto,
Any one skilled in the art the invention discloses technical scope in, technique according to the invention scheme and its
Inventive concept is subject to equivalent substitution or change, should be covered by the protection scope of the present invention.
Claims (10)
1. a kind of cleansing color coated steel sheet for purification, including substrate, it is characterised in that further include first coat of metal, first
Skin membrane, prime coat, dope layer, second coat of metal, the second skin membrane, back of the body enamelled coating.
A kind of 2. cleansing color coated steel sheet for purification according to claim 1, it is characterised in that first metal-plated
Layer, second coat of metal contain nano silicon dioxide, nano aluminum zinc titanium alloy and rare element.
A kind of 3. cleansing color coated steel sheet for purification according to claim 1, it is characterised in that first metal-plated
Layer thickness is 10~15 μm, and second metal layer thickness is 6~10 μm.
A kind of 4. cleansing color coated steel sheet for purification according to claim 1, it is characterised in that first metal-plated
Layer, the chemical composition of second coat of metal are 0.8wt%~1.5wt% Nano-meter SiO_2s2, 1.2wt%~1.5wt% nanometers of Al2O3、
91wt%~94wt%Zn, 2.4wt%~5wt%Al, 1wt%~2wt%Ti, 0.01wt%~0.05wt%Y, each component contain
Amount summation is 100wt%, the nanometer Al2O3Grain diameter is 30nm~60nm, the nano silica particle particle diameter for 20nm~
50nm。
A kind of 5. cleansing color coated steel sheet for purification according to claim 1, it is characterised in that the leather diaphragm
Layer, the second skin membrane film agent include 45~60g/L of fluorine zirconic acid, 40~55g/L of metavanadate, 300~450g/L of magnesium nitrate,
10~30g/L of citric acid, solvent are water.
A kind of 6. cleansing color coated steel sheet for purification according to claim 1, it is characterised in that the priming paint layer thickness
For 4-6 μm, the back of the body thickness of paint layer is 5-12 μm, and the prime coat, back of the body enamelled coating are amino-modified epoxy resin.
A kind of 7. cleansing color coated steel sheet for purification according to claim 1, it is characterised in that the dope layer raw material
Match in parts by weight as follows：10-30 parts of nitrocellulose, 15-35 parts of Boratex, 20-30 parts of n-butyl acetate, acrylic acid change
5-25 parts of alkyd resin of property, 80-90 parts of deionized water, 10-20 parts of pigment, 25-35 parts of n-butanol, 25-45 parts of polyamide, dioxy
Change 30-40 parts of titanium, 35-45 parts of silica, 4-10 parts of plasticizer, the pigment uses iron oxide red, iron oxide green or oxidation
Iron oxide yellow, the plasticizer use DBP.
8. according to a kind of preparation method of any cleansing color coated steel sheet for purification of claim 1-7, its feature exists
In the method comprising the steps of：
S1：Spray degreasing, brush roll grinding and washing process are carried out to substrate；
S2：The upper surface of substrate after handling step S1 plates first coat of metal, lower surface plates second coat of metal；
S3：Leather diaphragm layer is coated in the upper surface of substrate after handling step S2, the second skin membrane is coated in lower surface, and to institute
State leather diaphragm layer, the second skin membrane carries out drying and processing；
S4：The upper and lower surface of substrate after step S3 processing is primed and carried on the back paint, and the priming paint and back of the body paint are toasted
And cooling treatment, form prime coat and back of the body enamelled coating；
S5：In the prime coat coating, and it is toasted and cooling treatment, form dope layer.
9. the preparation method of a kind of cleansing color coated steel sheet for purification according to claim 8, it is characterised in that described
In step S4, the temperature toasted to priming paint and back of the body paint is 220~230 DEG C, and cooling treatment is contactless cooling, is utilized
Cooling water directly cools down priming paint and back of the body paint.
A kind of 10. preparation method of cleansing color coated steel sheet for purification according to claim 8, it is characterised in that institute
State in step S5, the temperature toasted to coating is 210~220 DEG C.
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