CN101624493A - Thermosetting acrylic coating used on surface of metal - Google Patents
Thermosetting acrylic coating used on surface of metal Download PDFInfo
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- CN101624493A CN101624493A CN200910017536A CN200910017536A CN101624493A CN 101624493 A CN101624493 A CN 101624493A CN 200910017536 A CN200910017536 A CN 200910017536A CN 200910017536 A CN200910017536 A CN 200910017536A CN 101624493 A CN101624493 A CN 101624493A
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- thermosetting acrylic
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Abstract
The invention provides a thermosetting coating, and more particularly adopts a thermosetting acrylic coating used on the surface of metal. The thermosetting acrylic coating mainly includes thermosetting acrylic resin, nano pigment and other necessary components. The coating adopting the components has good thermosetting property, requires lower thermosetting temperature, can effectively reduce the deformation of sheet metal caused by high temperature, prolongs the service life of the pigment, and improves the quality of the produced board; furthermore, the thermosetting acrylic coating also has good weatherability, can be used for a long time, is lower in production cost and is widely popularized and applied.
Description
Technical field
The present invention relates to a kind of thermosetting coating, is a kind of thermosetting acrylic coating that is used in the metallic surface specifically, is particularly useful for the external coating of low thickness sheet metal.
Background technology
In present every field industry, sheet metal all has been widely used as finishing material and outer wall material such as plastic-aluminum sheet material etc.Generally speaking in order to reduce cost, require these ornamental metal sheets should be thin as much as possible, brought into use the aluminium foil plate of the following thickness of 0.1mm etc. at present.For the decorative effect that improves these sheet metals and improve its anticorrosion antiwear, usually need be at metallic surface roll-in application one coating with as protection and ornament layer.For improving the efficient that roll-in is covered with paint, lacquer, colour wash, etc., generally this coating is all selected and can be dried at short notice, the therefore general thermosetting coating that adopts.Traditional method is in roll coat enamel, and the metal sheet that makes the surface have coating passes through drying tunnel, thereby the coating on the metal sheet is dried rapidly.But, therefore require the temperature of drying tunnel can not be too high because the effect of expanding with heat and contract with cold can make metal sheet that certain deformation takes place.
Present simultaneously being used for of using on the market mostly is the polyester lacquer to the coating of coating metal surfaces, because resinous molecular structure is big in the polyester lacquer, when having only temperature to raise, molecular coil could be loose, make functional group (OH) with the polyester lacquer in the aminoresin butoxy react.So the polyester lacquer needs could dry film forming under the comparatively high temps more than 200 ℃.And deformation all can take place in metal sheet under this temperature, and the metal sheet value that therefore makes is not high, and the scope of application is wideless, because pigment sticking power is relatively poor, weathering resistance is relatively poor, can't guarantee that long-time use does not come off simultaneously.
Summary of the invention
The present invention is directed to the deficiencies in the prior art, a kind of thermosetting coating is provided, what specifically adopt is to have adopted a kind of thermosetting acrylic coating that is used in the metallic surface, it mainly comprises thermosetting acrylic resin and nano dye, and other indispensable component, adopt this component and must get coating, the thermosetting performance is good, and the heat curing temperature that requires is lower, can effectively reduce the deformation that sheet metal Yin Gaowen causes, improved the work-ing life of pigment simultaneously, also just improved the sheet material of being produced, its good weatherability can life-time service, and production cost is lower, can apply widely.
Technical scheme of the present invention is as follows: the prescription of this thermosetting coating is as follows: by weight:
Thermosetting acrylic resin 60-75 part
Butoxy aminoresin 15--30 part
Nano-level pigment 15-20 part
Solvent 5-10 part
Owing to adopted thermosetting acrylic resin as the film forming main component of coating in the present invention's prescription, its molecular chain is flexible little macromolecular chain, and (OH) be positioned on the side chain of macromolecular chain, be difficult for being wrapped up by macromolecular mass, (reactive behavior OH) descends can not make functional group in its functional group.Therefore, (OH) the needed activation energy of chemical reaction takes place in the butoxy functional group with aminoresin, and is much lower than the polyester lacquer to greatly reduce its functional group.So the needed Heating temperature of reaction film forming is just low, has only 180-190 ℃.In order to reach film-formation result preferably, the present invention has improved the consumption of film-forming resin, and the corresponding butoxy aminoresin consumption of reaction with it that improved, can guarantee film forming homogeneity like this, and the thickness homogeneous that guarantees film, thereby, when adopting thermosetting acrylic coating of the present invention to be coated on the sheet metal surface, needed film-forming temperature has great reduction, has so just guaranteed that sheet metal deformation can not take place when toasting, improved its quality.
Why adopt nano-level pigment, mainly be exactly to rely on its small particle diameter directly to be attached to coating and get in the sheet metal surface, can improve the sticking power of pigment so greatly, simultaneously because the nano-level pigment excellent abrasion resistance, comprehensive raising the weathering resistance of whole sheet metal, can play and reduce the corrosive effect, improved the work-ing life of sheet material, nano-level pigment of the present invention, be lower than the pigment of 300 nanometers for fineness, as mica ferric oxide or ferrophosphorus powder or titanium dioxide etc., adopt these pigment to play and remedy microgroove that self-defect caused on the sheet metal etc.
The above-mentioned solvent that adopts is organic solvent, and as toluene and dimethylbenzene, in order to reduce the injury of these organic solvents for human body, the contriver reduces to its consumption minimum.
Except the main raw material of above-mentioned employing, also contain following auxiliary agent in the coating formula of the present invention:
Flow agent 0-0.2 part, defoamer 0-0.7 part, adhesion promoter 0-2.5 part, wetting dispersing agent 0-4 part.
In addition, can also increase other auxiliary agents according to the difference of working conditions, above-mentioned auxiliary agent all adopts the auxiliary agent that can directly buy on the market to get final product.When the mixed system that adopts above-mentioned substance during as the raw material of coating, make the effect of auxiliary agent obtain maximum lifting, also make the performance of coating be greatly improved.
In sum, the invention provides a kind of thermosetting acrylic coating that is used in the metallic surface, it mainly comprises thermosetting acrylic resin and nano dye, and other indispensable component, adopt this component and must get coating, the thermosetting performance is good, and the heat curing temperature that requires is lower, can effectively reduce the deformation that sheet metal Yin Gaowen causes, the work-ing life of having improved pigment simultaneously, also just improved the sheet material of being produced, its good weatherability can life-time service, and production cost is lower, can apply widely, have fabulous market outlook.
Embodiment
Following examples only are used to further specify the present invention, but do not limit the present invention.
Embodiment 1:
The coating that present embodiment adopts, its proportioning raw materials is as follows:
65 parts thermosetting acrylic resin, 20 parts butoxy aminoresin, 16 parts nano-level pigment and 5 parts solvent, 0.5 part defoamer and 2 parts promotor;
Wherein the pigment that is adopted is the titanium dioxide of fineness in the 220-250 nanometer, and solvent is a dimethylbenzene, and the defoamer that is adopted is a BYK-141 type defoamer, and promotor is ADP type adhesion promoter, the raw material that above-mentioned raw materials all can adopt market directly to buy.
The working method of this coating is as follows:
Earlier thermosetting acrylic resin and solvent are put into dispersion machine, stirred 30-40 minute, mix, make compound with high speed dispersor;
Again with sand mill with above-mentioned compound sand milling to fineness less than 25 microns:
At last, the compound suction that sand milling is good is adjusted in the pot, and adds titanium dioxide and other auxiliary agent defoamer and the adhesion promoter of fineness in the 220-250 nanometer successively, stirs after 60 minutes, promptly can be made into thermosetting acrylic coating of the present invention.Get final product at adding butoxy aminoresin during use.
Embodiment 2:
The coating that present embodiment adopts, its proportioning raw materials is as follows:
1.5 parts of the defoamer that solvent, the flow agent of 70 parts thermosetting acrylic resin, 15 parts butoxy aminoresin, 20 parts nano-level pigment and 8 parts is 0.2 part, 0.5 part, 2 parts promotor and wetting dispersing agents;
Wherein the pigment that is adopted is the ferrophosphorus powder of fineness in the 220-250 nanometer, solvent is a toluene, and the defoamer that is adopted is a BYK-141 type defoamer, and promotor is ADP type adhesion promoter, flow agent is a BYK-306 type flow agent, and wetting dispersing agent adopts sodium polyacrylate; The raw material that above-mentioned raw materials all can adopt market directly to buy.
The working method of this coating is as follows:
Earlier thermosetting acrylic resin and solvent are put into dispersion machine, stirred 30-40 minute, mix, make compound with high speed dispersor;
Again with sand mill with above-mentioned compound sand milling to fineness less than 25 microns:
At last, the compound suction that sand milling is good is adjusted in the pot, and add titanium dioxide and other auxiliary agent flow agent, defoamer, wetting dispersing agent and the adhesion promoter of fineness successively in the 220-250 nanometer, and stir after 60 minutes, promptly can be made into thermosetting acrylic coating of the present invention.Get final product at adding butoxy aminoresin during use.
Embodiment 3
The coating that present embodiment adopts, its proportioning raw materials is as follows:
3.5 parts of promotor that solvent, the flow agent of 75 parts thermosetting acrylic resin, 30 parts butoxy aminoresin, 20 parts nano-level pigment and 10 parts is 0.2 part, 0.5 part and wetting dispersing agents;
Wherein the pigment that is adopted is the ferrophosphorus powder of fineness in the 200-220 nanometer, and solvent is a dimethylbenzene, and the promotor of being adopted is ADP type adhesion promoter, and flow agent is a BYK-306 type flow agent, and wetting dispersing agent adopts dispersion agent DA; The raw material that above-mentioned raw materials all can adopt market directly to buy.
The working method of this coating is as follows:
Earlier thermosetting acrylic resin and solvent are put into dispersion machine, stirred 30-40 minute, mix, make compound with high speed dispersor;
Again with sand mill with above-mentioned compound sand milling to fineness less than 15 microns:
At last, the compound suction that sand milling is good is adjusted in the pot, and add titanium dioxide and other auxiliary agent flow agent, wetting dispersing agent and the adhesion promoter of fineness successively in the 220-250 nanometer, and stir after 45 minutes, promptly can be made into thermosetting acrylic coating of the present invention.Get final product at adding butoxy aminoresin during use.
Claims (4)
1. thermosetting acrylic coating that is used in the metallic surface, it is characterized in that: in weight part, concrete composition is as follows:
Thermosetting acrylic resin 60-75 part
Butoxy aminoresin 15--30 part
Nano-level pigment 15-20 part
Solvent 5-10 part
2. thermosetting acrylic coating according to claim 1 is characterized in that: described nano-level pigment fineness is lower than 300 nanometers, is iron mica or ferrophosphorus powder or titanium dioxide.
3. thermosetting acrylic coating according to claim 1 and 2 is characterized in that: described solvent is toluene or dimethylbenzene.
4. thermosetting acrylic coating according to claim 1 is characterized in that: also contain flow agent 0-0.2 part, defoamer 0-0.7 part, adhesion promoter 0-2.5 part, wetting dispersing agent 0-4 part in the prescription.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN200910017536A CN101624493A (en) | 2009-08-05 | 2009-08-05 | Thermosetting acrylic coating used on surface of metal |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN200910017536A CN101624493A (en) | 2009-08-05 | 2009-08-05 | Thermosetting acrylic coating used on surface of metal |
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| CN101624493A true CN101624493A (en) | 2010-01-13 |
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| CN200910017536A Pending CN101624493A (en) | 2009-08-05 | 2009-08-05 | Thermosetting acrylic coating used on surface of metal |
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Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103542564A (en) * | 2013-09-27 | 2014-01-29 | 安徽华印机电股份有限公司 | Nanocrystalline ceramic selective absorbing coating of solar energy |
| CN104312334A (en) * | 2014-10-30 | 2015-01-28 | 重庆亿隆漆业有限公司 | Metallic paint for motorcycle engine and preparation method of metallic paint |
| CN105315808A (en) * | 2014-06-29 | 2016-02-10 | 江苏飞翔涂料实业总公司 | Coating used for external decoration of motorbike |
| CN113292878A (en) * | 2021-04-23 | 2021-08-24 | 宁波佰利刀业有限公司 | Coating coated on surface of 304 stainless steel cutter and preparation method thereof |
| CN115109480A (en) * | 2022-07-25 | 2022-09-27 | 江苏海晟涂料有限公司 | High-performance middle coating for metal surface |
-
2009
- 2009-08-05 CN CN200910017536A patent/CN101624493A/en active Pending
Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103542564A (en) * | 2013-09-27 | 2014-01-29 | 安徽华印机电股份有限公司 | Nanocrystalline ceramic selective absorbing coating of solar energy |
| CN105315808A (en) * | 2014-06-29 | 2016-02-10 | 江苏飞翔涂料实业总公司 | Coating used for external decoration of motorbike |
| CN104312334A (en) * | 2014-10-30 | 2015-01-28 | 重庆亿隆漆业有限公司 | Metallic paint for motorcycle engine and preparation method of metallic paint |
| CN104312334B (en) * | 2014-10-30 | 2016-09-28 | 重庆亿隆漆业有限公司 | A kind of metallic paint for motorcycle engine and preparation method thereof |
| CN113292878A (en) * | 2021-04-23 | 2021-08-24 | 宁波佰利刀业有限公司 | Coating coated on surface of 304 stainless steel cutter and preparation method thereof |
| CN115109480A (en) * | 2022-07-25 | 2022-09-27 | 江苏海晟涂料有限公司 | High-performance middle coating for metal surface |
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Application publication date: 20100113 |