CN101289594A - Coating for sandwich panel and board two-used colorful steel plates and method of use thereof - Google Patents
Coating for sandwich panel and board two-used colorful steel plates and method of use thereof Download PDFInfo
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- CN101289594A CN101289594A CNA2007100395985A CN200710039598A CN101289594A CN 101289594 A CN101289594 A CN 101289594A CN A2007100395985 A CNA2007100395985 A CN A2007100395985A CN 200710039598 A CN200710039598 A CN 200710039598A CN 101289594 A CN101289594 A CN 101289594A
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Abstract
The invention discloses a coating material used in a sandwich board-veneer double use color-coated steel plate and a method for using the same. The compositions in percentage by mass of the coating material are: 48 to 53 percent of epoxy modified polyester resin, 22.9 to 25.6 percent of pigment powder, 5 to 8 percent of polyurethane crosslinking agent, 3 to 4.5 percent of methanol-etherized amino resin, 2 to 4 percent of butanol-etherized amino resin, 3 to 5 percent of p-toluenesulfonic acid, 4 to 8 percent of butyl glycol ether, 3 to 4 percent of butyl acetate and 2 to 4 percent of cyclohexanone. The coating material adopts a modified epoxy system and a back coating adopts double layer coating mode in order to meet the requirements of product durability; meanwhile, the comprehensive adjustment of viscosity, speed and pressure during primary/fine coat back coating process is carried out to ensure the coating effect of a product; therefore, the surface rigidity (i.e. the scratch resistant performance) of the product can reach to 1,200 g; meanwhile, the crosslinking density after coating material curing is higher and the corrosion resistant performance of the product is stronger (reaching to the zero grade after 500-hour salt spray test).
Description
Technical field
The present invention relates to cold rolling color coated steel sheet manufacturing, particularly sandwich panel, veneer dual purpose color coated steel sheet coating and using method thereof.
Background technology
Be coated with association (ECCA) and the statistics that is coated with association (NCCA) is rolled up by the U.S. according to Europe volume, surplus the annual production of global iron and steel substrate in 2005 has reached 1,700 ten thousand tons, the application of iron and steel substrate color coating product has expanded to each field such as building, automobile (transportation), household electrical appliances, furniture, packing, but construction applications remains the main application of color coating product, accounts for 65.3% of global ultimate production.
Metope and roofing are the topmost use of construction applications color coating product positions, and these two kinds of products mainly are divided into veneer and sandwich panel according to environment, construction requirement etc.
The user to the service requirements of colour coated plate is, veneer promptly refers to the color coating profiled sheet of individual layer, does not possess heat insulation function, and the pro and con coating all will satisfy the performance of color coated steel sheets such as outward appearance, weather resistance.The work flow of colour coated plate: uncoiling-pressure roller (overlay film)-moulding-shearing-finished product-stacking.
When sandwich panel refers to the color coated steel sheet die mould or afterwards, the thermal-insulating type sheet material that fill insulant material forms between two groups of steel plates.Colour coated plate work flow: uncoiling-infrared rays baking-pressure roller (overlay film)-moulding-injecting glue-mixing--infrared rays baking-bonding-infrared rays baking-shearing-finished product-stacking.The general type of sandwich panel lagging material comprises: urethane filled, poly-stupid template need color coated steel sheet back side lacquer to possess the adhesive property good with glue.
Existing color coating product adopts 2/1 product (front is coated with 2 layers, and the back side is coated with 1 layer) as sandwich panel purposes product structure in order to adapt to the requirement that the user makes sandwich panel and veneer, and its back side one coating adopts the priming paint identical with front priming paint, and color is a yellow-green colour.Because generally there is lagging material at the back side, so back side color or color distortion need only backing coat and possess good adhesive property for the user pays close attention to.
Also (front is coated with 2 layers just like 2/2 product, the back side is coated with 2 layers) as the veneer purposes, the coating structure of this product is: outside the 2/2 product back side generally is exposed to, need satisfy the requirement of user to back side color, aberration, backing coat also will satisfy the requirement of user in the course of processing, be not prone to processing and scratch the coating shedding cause and influence outward appearance, and backing coat also to satisfy the use properties of long period, promptly possess the endurance quality of backing coat.
But because color coating product face-coating of a great variety, certain customers are from getting the raw materials ready and reducing stock's angle, are desirable to provide a kind ofly can make the product that sandwich panel can be made veneer again.The back side lacquer that is to say this product need possess the attachment function of 2/1 product and the damage resistant and the solidity to corrosion requirement of 2/2 product simultaneously.And it is canescence that color meets most of customer requirements.
The color coating product back side of other manufacturer production lacquer all is individual layer epoxy back paint (two are coated with a baking) on the domestic market, coat-thickness is about 5 microns, because this product rete is thinner, and cancelled and be beneficial to rot-resistant and contain chrome pigment, therefore on the life-time service performance a little less than.
Summary of the invention
The object of the present invention is to provide a kind of sandwich panel, veneer dual purpose color coated steel sheet with coating and using method thereof, satisfy the user sandwich panel foaming requirement and veneer damage resistant and life requirement.
For achieving the above object, technical solution of the present invention is:
Sandwich panel, veneer dual purpose color coated steel sheet coating, its composition quality per-cent is:
Epoxy modified polyester resin 48～53
Pigment powder 22.9～25.6
Polyurethane cross-linking agent 5～8
Methyl-etherified aminoresin 3～4.5
Butyl ether aminoresin 2～4
To toluene semi-annular jade pendant acid 3～5
Butyl glycol ether 4～8
N-BUTYL ACETATE 3～4
Pimelinketone 2～4.
Further, described pigment powder comprises one or more the mixture in titanium dioxide, carbon black, titan yellow or other color pulvis.
Described pigment powder comprises titanium dioxide 22～25%, carbon black 0.1～0.2%, titan yellow 0.5～1%, and this per-cent is the mass percent that accounts for coating.
Sandwich panel of the present invention, veneer dual purpose color coated steel sheet design with coating:
Resinous type: must possess the two common demand owing to satisfy the product of 2/1 and 2/2 purposes simultaneously, that is to say that the 2/1M product is in processing and the user demand that must consider to satisfy these two kinds of products.Generally speaking, select the back side lacquer of redix, but this type product is short of on weather resistance as 2/1 product.And as anti-processing scuffing, the 2/2 higher back side of life requirement, generally select polyester type, but this type is in the phenomenon of carrying out occurring easily when sandwich panel is made imperfect bonding.Therefore, the back side lacquer that the present invention is directed to the 2/1M product adopts epoxide modified polyester type.
Because of this product must guarantee corrosion resistance nature and foam performance, therefore (Resins, epoxy polarity is stronger as the coating main body preferentially to select epoxypaint for use, but with the active group rapid reaction in the whipping agent, guarantee foaming effect), the T bending property of product needed product is not more than the flexility of 3T simultaneously, therefore to traditional Resins, epoxy oxygen modified polyester resin, improve the flexility of product.
Polyurethane cross-linking agent is mainly isocyanic ester, is mainly used in the crosslinking and curing agent of urethane resin; Methyl-etherified aminoresin, butyl ether aminoresin are all the crosslinking curing that aminoresin is mainly used in vibrin.
For improving the anti-scratch performance of product, improve the content ratio of isocyanic ester, aminoresin in the coating, improve the crosslinking curing density of coating, improve anti-scratch performance.(the solidifying agent ratio is too high, will cause the flexility of product to descend significantly, causes the processing cracking.)
The pigment powder comprises titanium dioxide, carbon black, titan yellow, is used to adjust painting color, and is identical with the pigment powder effect that other coating add.
Butyl glycol ether, pimelinketone, N-BUTYL ACETATE are paint solvent, because employing is the epoxy series plastics, the melting property of butyl glycol ether is better, so the ratio of butyl glycol ether is slightly high in the mixed solvent, suitably improve the flow leveling of coating simultaneously.The composition of pimelinketone and N-BUTYL ACETATE is mainly the thinner of polyester, urethane resin, controls the evaporation rate of solvent simultaneously, prevents to occur in coating process the coating bubble.The main effect of these three kinds of compositions is also identical with solvent action used in everyday.
Production technique of the present invention:
The coating structure of sandwich panel, veneer dual purpose color coated steel sheet: in order to satisfy the requirement of durability of product, backing coat adopts two layers of application pattern; Thickness: 3～4 microns of priming paint thickness, 5～7 microns of back side paint film thickness.
The coating process of sandwich panel of the present invention, veneer dual purpose color coated steel sheet comprises the steps:
1) pre-treatment, cleaning;
2) positive coating can be adopted existing conventional coating according to user's needs;
2.1 rendering, coating uses viscosity: 9～18 seconds, and application roll speed: strip speed+(8～25) m/min, carrying roller speed: strip speed * (0.40～0.60), application roll/carrying roller pressure: 1400～2000MPA;
2.2 rendering baking: storing temperature: 232～249 ℃, 18～24 seconds time;
2.3 the rendering cooling: water cooling is cooled to normal temperature;
2.4 essence is coated with, coating uses viscosity: 14～28 seconds, and application roll speed: strip speed+(8～25) m/min, carrying roller speed: strip speed * (0.30～0.70), application roll/carrying roller pressure: 1300～2000MPA;
2.5 essence is coated with baking: storing temperature: 232～241 ℃, 18～24 seconds time;
2.6 essence is coated with cooling: water cooling is cooled to normal temperature;
3) coating of the present invention is adopted in back side coating;
3.1 rendering, coating uses viscosity: 7～10 seconds, and application roll speed: strip speed+(6～15) m/min, carrying roller speed: strip speed * (0.45～0.55), application roll/carrying roller pressure: 1900～2300MPA;
3.2 rendering baking: storing temperature: 232～249 ℃, 18～24 seconds time;
3.3 the rendering cooling: water cooling is cooled to normal temperature;
3.4 essence is coated with, coating uses viscosity: 8～10 seconds, and application roll speed: strip speed+(7～15) m/min, carrying roller speed: strip speed * (0.45～0.55), application roll/carrying roller pressure: 1900～2300MPA;
3.5 essence is coated with baking: storing temperature: 232～241 ℃, 18～24 seconds time;
3.6 essence is coated with cooling: water cooling is cooled to normal temperature.
Described coat-thickness reaches 8～10 microns.
Further, described coating uses the measurement of viscosity to adopt the 4#ZN cup.
Use that this technology can be produced stable performance, coating is even, coat-thickness meets the requirements of sandwich panel veneer dual purpose colour coated plate.At this tailor-(made) coating, use the coating curing of this explained hereafter product complete simultaneously, the corrosion resistance nature of product, foam performance and scratch resistance performance are good.
Beneficial effect of the present invention
Original rendering back side coated technique is: viscosity 12～16 seconds, pressure 1600～2000MPA, carrying roller speed 22～30m/min, unit can't be produced the uniform priming paint of 3～4 micron thickness,-flavor increases application roll/carrying roller pressure and directly causes the travers of backing coat, defectives such as holiday, the painting effect extreme difference.
Essence is coated with back side coated technique, viscosity 13～16 seconds, pressure 1400～1900MPA, carrying roller speed 24～30m/min, coat-thickness reaches 8～10 microns, use viscosity if reduce coating, coatingsurface is seriously inhomogeneous, influences the coatingsurface quality, directly causes the travers of backing coat if increase application roll/carrying roller pressure.
The present invention adopts the modified epoxy system, and in order to satisfy the requirement of durability of product, backing coat adopts two layers of application pattern.Simultaneously, comprehensive adjustment is first, essence is coated with back side coated technique medium viscosity, speed, pressure, guarantees the product painting effect.So surface hardness of product (mar-proof performance can reach 1200 grams), cross-linking density behind the paint solidification is higher simultaneously, strong (the 500 hours salt-fog tests of the corrosion resistance nature of product, 0 grade), the sandwich panel of production, veneer dual purpose color coated steel sheet (2/1M) have obtained the user and have used approval after putting on market.
Embodiment
Embodiments of the invention are referring to table 1.
Table 1 unit: mass percent
Production technique: pre-treatment-rendering back side coating-rendering baking-rendering cooling-essence is coated with back side coating-essence and is coated with baking-essence and is coated with cooling;
The coating process of sandwich panel of the present invention, veneer dual purpose color coated steel sheet comprises the steps:
1) pre-treatment, cleaning;
2) positive coating,
2.1 rendering, coating uses viscosity (4#ZN cup): 9～18 seconds, and application roll speed: strip speed+(8～25) m/min, carrying roller speed: strip speed * (0.40～0.60), application roll/carrying roller pressure: 1400～2000MPA;
2.2 rendering baking: storing temperature: 232～249 ℃, 18～24 seconds time;
2.3 the rendering cooling: water cooling is cooled to normal temperature;
2.4 essence is coated with, coating uses viscosity (4#ZN cup): 14～28 seconds, and application roll speed: strip speed+(8～25) m/min, carrying roller speed: strip speed * (0.30～0.70), application roll/carrying roller pressure: 1300～2000MPA;
2.5 essence is coated with baking: storing temperature: 232～241 ℃, 18～24 seconds time;
2.6 essence is coated with cooling: water cooling is cooled to normal temperature;
3) back side coating,
3.1 rendering, coating uses viscosity (4#ZN cup): 7～10 seconds, and application roll speed: strip speed+(6～15) m/min, carrying roller speed: strip speed * (0.45～0.55), application roll/carrying roller pressure: 1900～2300MPA;
3.2 rendering baking: storing temperature: 232～249 ℃, 18～24 seconds time;
3.3 the rendering cooling: water cooling is cooled to normal temperature;
3.4 essence is coated with, coating uses viscosity (4#ZN cup): 8～10 seconds, and application roll speed: strip speed+(7～15) m/min, carrying roller speed: strip speed * (0.45～0.55), application roll/carrying roller pressure: 1900～2300MPA;
3.5 essence is coated with baking: storing temperature: 232～241 ℃, 18～24 seconds time;
3.6 essence is coated with cooling: water cooling is cooled to normal temperature.
Sandwich panel and veneer dual purpose color coated steel sheet (2/1M) after the present invention applies, its foam performance obviously improves, and referring to Fig. 1, the foam performance of 2/1M product as shown in Figure 6, meets bond area greater than 85% requirement, and adhesive property reaches 2/1 product level.
The corrosion resistance nature result is as shown in table 2, and as seen, sandwich panel can be identical with 2/2 product with veneer dual purpose color coated steel sheet (2/1M) durability of product from table 2.
The salt fog performance:
The salt-fog test result of table 2 back side lacquer after 500 hours
| Numbering | Finish paint | Substrate number | Back side lacquer | The result |
| 1 | Hai Lan | 3716779 | 2/2 | 0(S0) |
| 2 | Hai Lan | 3716867 | 2/2 | 0(S0) |
| 3 | Hai Lan | 3716868 | 2/2 | 0(S0) |
| 4 | Hai Lan | 3716783 | 2/2 | 0(S0) |
| 5 | Hai Lan | 3716784 | 2/2 | 0(S0) |
| 6 | Lime | 3716824 | 3+6 | 0(S0) |
| 7 | Lime | 3716826 | 3+6 | 0(S0) |
| 8 | Lime | 3716827 | 3+6 | 0(S0) |
| 9 | Lime | 3716829 | 3+6 | 0(S0) |
| 10 | Lime | 3716830 | 3+6 | 0(S0) |
The test-results explanation, 500 hours salt fog performances of 2/1M product are suitable with 2/2 product performance, all can reach 0 (S0) rank.
(2) QUV aging resistance
The QUV accelerated weathering test result of table 3 back side lacquer after 240 hours
The test-results explanation, 240 hours QUV performances of 2/1M product are suitable with 2/2 product performance.Wherein loss of gloss rate and efflorescence rank slightly are better than 2/2 product; QUV aberration and ash card discoloration slightly are worse than 2/2 product.
Claims (6)
1. sandwich panel, veneer dual purpose color coated steel sheet coating, its composition quality per-cent is:
Epoxy modified polyester resin 48～53
Pigment powder 22.9～25.6
Polyurethane cross-linking agent 5～8
Methyl-etherified aminoresin 3～4.5
Butyl ether aminoresin 2～4
To toluene semi-annular jade pendant acid 3～5
Butyl glycol ether 4～8
N-BUTYL ACETATE 3～4
Pimelinketone 2～4.
2. sandwich panel as claimed in claim 1, veneer dual purpose color coated steel sheet coating is characterized in that, described pigment powder comprises one or more the mixture in titanium dioxide, carbon black, titan yellow or other color pulvis.
3. sandwich panel as claimed in claim 2, veneer dual purpose color coated steel sheet coating is characterized in that described pigment powder comprises titanium dioxide 22～25%, carbon black 0.1～0.2%, titan yellow 0.5～1%, and this per-cent is the mass percent that accounts for coating.
4. the coating process of sandwich panel, veneer dual purpose color coated steel sheet comprises the steps:
1) pre-treatment, cleaning;
2) positive coating,
2.1 rendering, coating uses viscosity: 9～18 seconds, and application roll speed: strip speed+(8～25) m/min, carrying roller speed: strip speed * (0.40～0.60), application roll/carrying roller pressure: 1400～2000MPA;
2.2 rendering baking: storing temperature: 232～249 ℃, 18～24 seconds time;
2.3 the rendering cooling: water cooling is cooled to normal temperature;
2.4 essence is coated with, coating uses viscosity: 14～28 seconds, and application roll speed: strip speed+(8～25) m/min, carrying roller speed: strip speed * (0.30～0.70), application roll/carrying roller pressure: 1300～2000MPA;
2.5 essence is coated with baking: storing temperature: 232～241 ℃, 18～24 seconds time;
2.6 essence is coated with cooling: water cooling is cooled to normal temperature;
3) coating as claimed in claim 1 is adopted in back side coating;
3.1 rendering, coating uses viscosity: 7～10 seconds, and application roll speed: strip speed+(6～15) m/min, carrying roller speed: strip speed * (0.45～0.55), application roll/carrying roller pressure: 1900～2300MPA;
3.2 rendering baking: storing temperature: 232～249 ℃, 18～24 seconds time;
3.3 the rendering cooling: water cooling is cooled to normal temperature;
3.4 essence is coated with, coating uses viscosity: 8～10 seconds, and application roll speed: strip speed+(7～15) m/min, carrying roller speed: strip speed * (0.45～0.55), application roll/carrying roller pressure: 1900～2300MPA;
3.5 essence is coated with baking: storing temperature: 232～241 ℃, 18～24 seconds time;
3.6 essence is coated with cooling: water cooling is cooled to normal temperature.
5. the coating process of sandwich panel as claimed in claim 4, veneer dual purpose color coated steel sheet is characterized in that, described coat-thickness reaches 8～10 microns.
6. the coating process of sandwich panel as claimed in claim 4, veneer dual purpose color coated steel sheet is characterized in that, described coating uses the measurement of viscosity to adopt the 4#ZN cup.
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNA2007100395985A CN101289594A (en) | 2007-04-18 | 2007-04-18 | Coating for sandwich panel and board two-used colorful steel plates and method of use thereof |
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| CNA2007100395985A CN101289594A (en) | 2007-04-18 | 2007-04-18 | Coating for sandwich panel and board two-used colorful steel plates and method of use thereof |
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Cited By (8)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN102632672A (en) * | 2012-03-31 | 2012-08-15 | 马钢(集团)控股有限公司 | Color-coated plate and method for manufacturing same |
| US20130071668A1 (en) * | 2009-12-31 | 2013-03-21 | Basf Coatings Gmbh | Anhydrous composition as a coating agent for functional layers of a multilayer paint |
| CN105255306A (en) * | 2015-11-05 | 2016-01-20 | 苏州明轩地坪涂料有限公司 | High-corrosion-resistance coating |
| CN105315854A (en) * | 2014-07-25 | 2016-02-10 | 宝山钢铁股份有限公司 | Self-cleaning type high-durability top coat coating material and color coating steel plate coated with self-cleaning type high-durability top coat coating material |
| CN105602417A (en) * | 2016-01-19 | 2016-05-25 | 立邦涂料（天津）有限公司 | Polyester back coating and preparation method thereof |
| CN107384116A (en) * | 2017-06-28 | 2017-11-24 | 太仓市美航涂料有限公司 | A kind of oiliness wheel hub dedicated liquid baking vanish |
| CN108383973A (en) * | 2018-02-12 | 2018-08-10 | 吴艳飞 | A kind of full water foamed and sprayed soft flame retardant polyurethane thermal insulation material and preparation method thereof |
| CN118594895A (en) * | 2024-08-05 | 2024-09-06 | 山西建龙实业有限公司 | One-time coating production method for coating with back paint thickness of 14-15 mu m |
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- 2007-04-18 CN CNA2007100395985A patent/CN101289594A/en active Pending
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| Publication number | Priority date | Publication date | Assignee | Title |
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| US20130071668A1 (en) * | 2009-12-31 | 2013-03-21 | Basf Coatings Gmbh | Anhydrous composition as a coating agent for functional layers of a multilayer paint |
| US9359525B2 (en) * | 2009-12-31 | 2016-06-07 | Basf Coatings Gmbh | Anhydrous composition as a coating agent for functional layers of a multilayer paint |
| CN102632672A (en) * | 2012-03-31 | 2012-08-15 | 马钢(集团)控股有限公司 | Color-coated plate and method for manufacturing same |
| CN102632672B (en) * | 2012-03-31 | 2015-07-22 | 马钢(集团)控股有限公司 | Color-coated plate and method for manufacturing same |
| CN105315854A (en) * | 2014-07-25 | 2016-02-10 | 宝山钢铁股份有限公司 | Self-cleaning type high-durability top coat coating material and color coating steel plate coated with self-cleaning type high-durability top coat coating material |
| CN105315854B (en) * | 2014-07-25 | 2018-05-11 | 宝山钢铁股份有限公司 | The high long life topcoat coating of self-cleaning type and the color coated steel sheet for scribbling the coating |
| CN105255306A (en) * | 2015-11-05 | 2016-01-20 | 苏州明轩地坪涂料有限公司 | High-corrosion-resistance coating |
| CN105602417A (en) * | 2016-01-19 | 2016-05-25 | 立邦涂料（天津）有限公司 | Polyester back coating and preparation method thereof |
| CN107384116A (en) * | 2017-06-28 | 2017-11-24 | 太仓市美航涂料有限公司 | A kind of oiliness wheel hub dedicated liquid baking vanish |
| CN108383973A (en) * | 2018-02-12 | 2018-08-10 | 吴艳飞 | A kind of full water foamed and sprayed soft flame retardant polyurethane thermal insulation material and preparation method thereof |
| CN108383973B (en) * | 2018-02-12 | 2020-12-22 | 吴艳飞 | Full-water foaming spraying soft flame-retardant polyurethane thermal insulation material and preparation method thereof |
| CN118594895A (en) * | 2024-08-05 | 2024-09-06 | 山西建龙实业有限公司 | One-time coating production method for coating with back paint thickness of 14-15 mu m |
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Open date: 20081022 |