CN102233701A - Color-coating steel plate and coating process - Google Patents
Color-coating steel plate and coating process Download PDFInfo
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- CN102233701A CN102233701A CN2010101517572A CN201010151757A CN102233701A CN 102233701 A CN102233701 A CN 102233701A CN 2010101517572 A CN2010101517572 A CN 2010101517572A CN 201010151757 A CN201010151757 A CN 201010151757A CN 102233701 A CN102233701 A CN 102233701A
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Abstract
The invention discloses a color-coating steel plate which comprises a metal substrate, priming paint coated on the metal substrate, and top finish coated on the priming paint; the top finish is antistatic polyester paint which comprises the following compound ingredients by mass: 30-70 parts of high molecular weight polyester resin, 3-15 parts of methyl-etherified amino resin, 10-20 parts of conductive titanium dioxide, 16-37 parts of pigments, 0.1-1 parts of acrylic acid leveling agents, 0.1-1 parts of silica, 0.1-1 parts of polytetrafluoroethylene wax. Correspondingly, the invention also provides a coating process of the color-coating steel plate, which comprises several process steps such as paint primary coating, primary coating curing, primary coating cooling, paint fine coating, fine coating curing, fine coating cooling, and the like, and the color-coating steel plate produced by the process has a beautiful appearance, and an excellent antistatic property.
Description
Technical field
The present invention relates to coil steel coating and coil sheet material material production field, relate in particular to a kind of color painted steel strip and coating process thereof.
Background technology
So-called color painted steel strip also claims steel plate with organic coating or pre-coated steel plate, be that metal substrate is through after the preliminary treatment, apply the one layer or more organic coating, the composite that forms through overbaking is because of it has good corrosion resistance and aesthetic property is widely used in building and household electric appliances.
Electrostatic phenomenon is seen everywhere in the daily life, the accumulation of electrostatic charge, and the lighter can make body surface carry a large amount of microorganisms and bacterium, reduces the apparent property and the use value of product, and weight person can cause burning and blast.But its surface of common color coated steel sheet product that generally is applied to interior architecture is made up of macromolecular material, thereby has a very high sheet resistance, the electrostatic charge that causes common color coated steel sheet surface to be produced is difficult to discharge for the moment, thereby accumulate increasing electrostatic charge, sometimes the electrostatic potential of these materials even up to several kilovolts.Therefore in fields such as electronics factory building, hospital, food storage districts, need the stronger construction material of antistatic property.In general, if the material surface resistance value 10
6-10
9Ω cm
2, can think that just this material has antistatic behaviour, the material that is lower than this value is an electric conductor, and the material that is higher than this value is a non-conductor.
Publication number is CN1916048, open day is on February 21st, 2007, name is called in the Chinese patent literature of " antistatic polyurethane resin and its coating and manufacture method thereof ", a kind of antistatic polyurethane resin coating and manufacture method thereof are disclosed, this invention is the utilization emulsion polymerization, polymerisation in solution or bulk polymerization manufacturing comprise polymeric antistatic acryl polyurethane resin and its coating of metal ion, with technical scheme of the present invention and inequality.
Publication number is CN1715350, open day is on January 4th, 2006, name is called in the Chinese patent literature of " a kind of antistatic coating and preparation method thereof ", a kind of antistatic coating and preparation method thereof is disclosed, be to prepare antistatic coating, make its antistatic property and anti-static plastic suitable by the biomass carbon that adds high conductivity.With coil steel coating and coil sheet material material production field and uncorrelated involved in the present invention.
Summary of the invention
The purpose of this invention is to provide a kind of color painted steel strip, it is different from common color painted steel strip, but has good anti-static function.
Another object of the present invention provides the coating process of above-mentioned colored coated steel plate; this coating process can make the paint solidification film forming and produce good binding with metal substrate; thereby make coating to carry out machining deformation and can not come off, thereby metal substrate is played good protection and beautification function with substrate.
Technical conceive of the present invention is: coating of the present invention has antistatic property, and it realizes that principle is to utilize conductive filler to be in contact with one another the formation conductive network, and moves the formation electric current by free electron along the extra electric field direction, thereby makes coating antistatic.
According to above-mentioned purpose, the invention provides a kind of color painted steel strip, comprise metal substrate, be coated on the priming paint on the metal substrate, and be coated on the finish paint on the priming paint, described finish paint is an antistatic polyester paint, its compound component mass fraction is:
30～70 parts of high molecular weight polyester resins
3～15 parts in methyl-etherified amino resins
10～20 parts of conductive titanium dioxides
16～37 parts of pigment
0.1～1 part of acrylic acid levelling agent
0.1～1 part of silica
Cured 0.1～1 part of poly-inclined to one side tetrafluoroethene.
In above-mentioned each compound, high molecular weight polyester resins is formed by aromatic acid, aliphatic dibasic acid and aliphatic polyol esterification, it is the key substance in the coating, cross-linking reaction takes place in the methoxyl methyl in itself and the amino resins under the acting in conjunction of high temperature and strong acid, form network structure, to the hardness of coating, pliability, durability and relevant chemical property influence greatly.Cross-linking reaction takes place in methyl-etherified amino resins and mylar under the acting in conjunction of high temperature and strong acid, form the network structure coating.And after above-mentioned two kinds of compounds as conductive filler were in contact with one another the formation conductive network, conductive titanium dioxide moved the formation electric current by free electron along the extra electric field direction, thereby makes coating antistatic.The agent of acrylic acid levelling is adjusted the surface tension of coating in the paint solidification process, give the paint film levelling with effect attractive in appearance.The agglomerate with spongelike structure of porous silica crack degree then makes and is radiated at coating glazed thread generation diffuse reflection, reaches the effect that reduces gloss.As the cured higher softening point of tetrafluoroethene that utilizes of the poly-inclined to one side tetrafluoroethene of additive, reach the purpose of the flatness, wearability, damage resistant, anti-stick company and the resistance tocrocking that improve coating.
In addition, need to prove that antistatic polyester paint of the present invention is not only applicable to steel plate and applies, and also is applicable to the coating of similar steel part such as steel band.
Preferably, the viscosity of described antistatic polyester paint is 10～30s/25 ℃.
Alternatively, described pigment comprises: 0.1～1 part iron oxide red, and 15～35 parts R one titanium dioxide, 0.1～0.2 part titan yellow, surplus are auxiliary material.In addition, according to the needs of practical application, can also add other various pigment compositions and make coating have various color.
Preferably, described metal substrate is the pure zinc or the aluminium-zinc coating steel plate of surface heat immersion plating or plating.
Preferably, described priming paint is polyurethane primer.
Correspondingly, the present invention also provides a kind of coating process of color painted steel strip, and it comprises the steps:
(1) rendering: primer coating on metal base plate;
(2) rendering solidifies: the metallic plate that will scribble priming paint toasts in curing oven;
(3) cooling: will carry out water-cooled through the metallic plate that rendering solidifies;
(4) the coating essence is coated with: antistatic polyester paint is coated on the priming paint, described antistatic polyester paint process before coating stirs, mixing speed is 300～600 rev/mins, the constituent mass umber of described antistatic polyester paint is: 30～70 parts high molecular weight polyester resins, 3～15 parts methyl-etherified amino resins, 10～20 parts conductive titanium dioxide, 16～37 parts pigment, 0.1～1 part acrylic acid levelling agent, 0.1～1 part silica, 0.1～1 part poly-inclined to one side tetrafluoroethene is cured.
(5) essence is coated with curing: will toast in curing oven through the smart metallic plate that is coated with, baking temperature is 230～241 ℃, and stoving time is 20～40s;
(6) essence is coated with cooling: will carry out water-cooled through the smart metallic plate that is coated with curing.
Preferably, the priming paint in the described step (1) is polyurethane primer.
Preferably, rendering adopts the mode of roller coat to carry out in the described step (1), and applicator roll roller speed is 130～150m/min, and carrying roller roller speed is 20～50m/min.
Preferably, baking temperature is 232～241 ℃ in the described step (2), and stoving time is 20～40s.
Preferably, essence is coated with and adopts the mode of roller coat to carry out in the described step (4), and applicator roll roller speed is 90～130m/min, and carrying roller roller speed is 35～65m/min.
Compared with the prior art, the present invention need not reforming equipment, manufacturing process is simple, can produce not only attractive in appearance, but also have the color painted steel strip of high corrosion-resistant, excellent antistatic property, make this kind steel plate can be widely used in industries such as hospital, electronics factory building, food processing factory, for the application extension of color coating product wide field.
The specific embodiment
Embodiment 1-5
All selecting the trade mark among the embodiment 1-5 for use is TDC51D, thickness 0.5mm, and the conventional galvanizing aluminum killed steel of width 1200mm is a metal base plate.The composition of antistatic polyester paint sees Table 1 among each embodiment.
Table 1
| Composition | Embodiment 1 | Embodiment 2 | Embodiment 3 | Embodiment 4 | Embodiment 5 |
| High molecular weight polyester resins (mass fraction) | 36 | 44 | 34 | 30 | 70 |
| Methyl-etherified amino resins (mass fraction) | 8 | 7 | 9 | 15 | 3 |
| Conductive titanium dioxide (mass fraction) | 19 | 17 | 20 | 19 | 10 |
| Iron oxide red (mass fraction) | 1 | 0.8 | 0.7 | 0.3 | 0.1 |
| R-titanium dioxide (mass fraction) | 35 | 30 | 34 | 33 | 15 |
| Titan yellow (mass fraction) | 0.1 | 0.2 | 0.19 | 0.15 | 0.17 |
| Acrylic acid levelling agent (mass fraction) | 0.1 | 0.11 | 0.9 | 1 | 0.47 |
| Silica (mass fraction) | 0.11 | 0.1 | 1 | 0.79 | 0.12 |
| Poly-inclined to one side tetrafluoroethene cured (mass fraction) | 0.59 | 0.64 | 0.1 | 0.56 | 1 |
| Viscosity (s/25 ℃) | 10 | 15 | 30 | 25 | 19 |
Among the embodiment 1-5, each metal base plate all carries out application according to following step, and concrete technological parameter sees Table 2:
(1) adopt the mode of roller coat to apply polyurethane primer on metal base plate, applicator roll roller speed is 130～150m/min, and carrying roller roller speed is 20～50m/min;
(2) rendering solidifies: the metallic plate that will scribble priming paint toasts in curing oven, and baking temperature is 232～241 ℃, and stoving time is 20～40s.；
(3) cooling: will carry out water-cooled through the metallic plate that rendering solidifies;
(4) the coating essence is coated with: antistatic polyester paint is stirred, and mixing speed is 300～600 rev/mins, adopts the mode of roller coat to be coated on the priming paint then, and applicator roll roller speed is 35～65m/min, and carrying roller roller speed is 35～65m/min.
(5) essence is coated with curing: will toast in curing oven through the smart metallic plate that is coated with, baking temperature is 230～241 ℃, and stoving time is 20～40s;
(6) essence is coated with cooling: will carry out water-cooled through the smart metallic plate that is coated with curing.
Coating process parameter among the table 2. embodiment 1-5
| Embodiment 1 | Embodiment 2 | Embodiment 3 | Embodiment 4 | Embodiment 5 | |
| Rendering applicator roll roller speed m/min | 130 | 140 | 125 | 150 | 135 |
| Rendering carrying roller roller speed m/min | 20 | 50 | 30 | 40 | 45 |
| Rendering solidifies baking temperature ℃ | 236 | 240 | 235 | 241 | 232 |
| Rendering solidifies stoving time s | 35 | 20 | 30 | 40 | 25 |
| The antistatic polyester paint mixing speed (rev/min) | 600 | 400 | 300 | 450 | 500 |
| Essence is coated with applicator roll roller speed m/min | 110 | 130 | 120 | 100 | 90 |
| Essence is coated with carrying roller roller speed m/min | 65 | 55 | 50 | 40 | 35 |
| Essence is coated with solidifies baking temperature ℃ | 232 | 241 | 238 | 239 | 240 |
| Essence is coated with solidifies stoving time s | 40 | 35 | 25 | 20 | 30 |
The coating performance of table 3. finished product steel plate
| Embodiment 1 | Embodiment 2 | Embodiment 3 | Embodiment 4 | Embodiment 5 | |
| Coating layer thickness (mm) | 20 | 22 | 21 | 23 | 21 |
| Crooked (T) | 3 | 2 | 3 | 1 | 2 |
| Pencil hardness | F | F | F | F | F |
| Ballistic work (J) | 9 | 9 | 9 | 9 | 9 |
| Sheet resistance (Ω cm 2) | 5×10 7 | 6×10 7 | 4×10 7 | 5×10 7 | 7×10 7 |
As shown in Table 3, color painted steel strip of the present invention, its coating has 9 joules resistance to impact, and pencil hardness is the coating hardness of F, and less than the film flexibility of 3T.In general, if the material surface resistance value 10
6-10
9Ω cm
2, can think that just this material has antistatic behaviour, and the coating of color painted steel strip of the present invention, its sheet resistance value order of magnitude reaches 10
7, satisfied the demand of antistatic behaviour.
Should be noted that at last: above embodiment is only in order to illustrate that technical scheme of the present invention is not intended to limit; Although with reference to preferred embodiment the present invention is had been described in detail, those of ordinary skill in the field are to be understood that: still can make amendment or the part technical characterictic is equal to replacement the specific embodiment of the present invention; And not breaking away from the spirit of technical solution of the present invention, it all should be encompassed in the middle of the technical scheme scope that the present invention asks for protection.
Claims (10)
1. a color painted steel strip comprises metal substrate, is coated on the priming paint on the metal substrate, and is coated on the finish paint on the priming paint, it is characterized in that, described finish paint is an antistatic polyester paint, and the mass fraction of its compound component is:
30～70 parts of high molecular weight polyester resins
3～15 parts in methyl-etherified amino resins
10～20 parts of conductive titanium dioxides
16～37 parts of pigment
0.1～1 part of acrylic acid levelling agent
0.1～1 part of silica
Cured 0.1～1 part of poly-inclined to one side tetrafluoroethene
2. color painted steel strip as claimed in claim 1 is characterized in that, the viscosity of described antistatic polyester paint is 10～30s/25 ℃.
3. color painted steel strip as claimed in claim 1 or 2 is characterized in that, described pigment comprises:
0.1～1 part of iron oxide red;
15～35 parts of R one titanium dioxides;
0.1～0.2 part of titan yellow;
Surplus is an auxiliary material.
4. color painted steel strip as claimed in claim 1 or 2 is characterized in that, described metal substrate is the pure zinc or the aluminium-zinc coating steel plate of surface heat immersion plating or plating.
5. color painted steel strip as claimed in claim 4 is characterized in that, described priming paint is polyurethane primer.
6. the coating process of a color painted steel strip is characterized in that, comprises the steps:
(1) rendering: primer coating on metal base plate;
(2) rendering solidifies: the metallic plate that will scribble priming paint toasts in curing oven;
(3) cooling: will carry out water-cooled through the metallic plate that rendering solidifies;
(4) the coating essence is coated with: antistatic polyester paint is coated on the priming paint, described antistatic polyester paint process before coating stirs, mixing speed is 300～600 rev/mins, the constituent mass umber of described antistatic polyester paint is: 30～70 parts high molecular weight polyester resins, 3～15 parts methyl-etherified amino resins, 10～20 parts conductive titanium dioxide, 16～37 parts pigment, 0.1～1 part acrylic acid levelling agent, 0.1～1 part silica, 0.1～1 part poly-inclined to one side tetrafluoroethene is cured.
(6) essence is coated with curing: will toast in curing oven through the smart metallic plate that is coated with, baking temperature is 230～241 ℃, and stoving time is 20～40s;
(7) essence is coated with cooling: will carry out water-cooled through the smart metallic plate that is coated with curing.
7. the coating process of color painted steel strip as claimed in claim 6 is characterized in that, the priming paint in the described step (1) is polyurethane primer.
8. the coating process of color painted steel strip as claimed in claim 7 is characterized in that, rendering adopts the mode of roller coat to carry out in the described step (1), and applicator roll roller speed is 130～150m/min, and carrying roller roller speed is 20～50m/min.
9. the coating process of color painted steel strip as claimed in claim 8 is characterized in that, baking temperature is 232～241 ℃ in the described step (2), and stoving time is 20～40s.
10. the coating process of color painted steel strip as claimed in claim 9 is characterized in that, essence is coated with and adopts the mode of roller coat to carry out in the described step (4), and applicator roll roller speed is 90～130m/min, and carrying roller roller speed is 35～65m/min.
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|---|---|---|---|
| CN 201010151757 CN102233701B (en) | 2010-04-20 | 2010-04-20 | Color-coating steel plate and coating process |
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|---|---|---|---|
| CN 201010151757 CN102233701B (en) | 2010-04-20 | 2010-04-20 | Color-coating steel plate and coating process |
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| CN102233701A true CN102233701A (en) | 2011-11-09 |
| CN102233701B CN102233701B (en) | 2013-07-17 |
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Cited By (11)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102909913A (en) * | 2012-11-02 | 2013-02-06 | 常熟华冶薄板有限公司 | Antistatic color coated steel plate and preparation method thereof |
| CN103448318A (en) * | 2013-08-21 | 2013-12-18 | 苏州康华净化系统工程有限公司 | Heat-resistant anti-static color-coated steel plate |
| CN103756528A (en) * | 2013-12-30 | 2014-04-30 | 苏州市邦成电子科技有限公司 | Solvent-resistant polyester coating for steel products and preparation method thereof |
| CN104449149A (en) * | 2014-12-26 | 2015-03-25 | 苏州菲斯特电力科技有限公司 | High-pressure filter compensation complete unit |
| CN107384147A (en) * | 2017-07-21 | 2017-11-24 | 新丰惠泽涂料有限公司 | A kind of high-performance household electrical appliances precoated coil coating and preparation method thereof |
| CN108546500A (en) * | 2018-04-28 | 2018-09-18 | 苏州新颖新材料科技股份有限公司 | A kind of chromatic metallic plate with bactericidal effect |
| CN108587466A (en) * | 2018-04-28 | 2018-09-28 | 苏州新颖新材料科技股份有限公司 | A kind of superhard chromatic metallic plate of water-based paint |
| CN109332136A (en) * | 2018-10-30 | 2019-02-15 | 黄河三角洲京博化工研究院有限公司 | A kind of production method of Coil Coating Products |
| CN109749555A (en) * | 2019-01-21 | 2019-05-14 | 北京慧缘有限责任公司 | Antistatic paint and safety cap |
| CN114682461A (en) * | 2022-04-20 | 2022-07-01 | 新疆八一钢铁股份有限公司 | Production process of color-coated plate for tomato sauce barrel cover |
| CN115960482A (en) * | 2022-12-15 | 2023-04-14 | 永记造漆工业(嘉兴)有限公司 | Antistatic polyester finish paint and preparation method thereof |
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Cited By (12)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102909913A (en) * | 2012-11-02 | 2013-02-06 | 常熟华冶薄板有限公司 | Antistatic color coated steel plate and preparation method thereof |
| CN103448318A (en) * | 2013-08-21 | 2013-12-18 | 苏州康华净化系统工程有限公司 | Heat-resistant anti-static color-coated steel plate |
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| CN104449149A (en) * | 2014-12-26 | 2015-03-25 | 苏州菲斯特电力科技有限公司 | High-pressure filter compensation complete unit |
| CN107384147A (en) * | 2017-07-21 | 2017-11-24 | 新丰惠泽涂料有限公司 | A kind of high-performance household electrical appliances precoated coil coating and preparation method thereof |
| CN108546500A (en) * | 2018-04-28 | 2018-09-18 | 苏州新颖新材料科技股份有限公司 | A kind of chromatic metallic plate with bactericidal effect |
| CN108587466A (en) * | 2018-04-28 | 2018-09-28 | 苏州新颖新材料科技股份有限公司 | A kind of superhard chromatic metallic plate of water-based paint |
| CN109332136A (en) * | 2018-10-30 | 2019-02-15 | 黄河三角洲京博化工研究院有限公司 | A kind of production method of Coil Coating Products |
| CN109749555A (en) * | 2019-01-21 | 2019-05-14 | 北京慧缘有限责任公司 | Antistatic paint and safety cap |
| CN114682461A (en) * | 2022-04-20 | 2022-07-01 | 新疆八一钢铁股份有限公司 | Production process of color-coated plate for tomato sauce barrel cover |
| CN115960482A (en) * | 2022-12-15 | 2023-04-14 | 永记造漆工业(嘉兴)有限公司 | Antistatic polyester finish paint and preparation method thereof |
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