CN103965728A - Special hydrophobic coating for aluminum strip - Google Patents
Special hydrophobic coating for aluminum strip Download PDFInfo
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- CN103965728A CN103965728A CN201310043259.XA CN201310043259A CN103965728A CN 103965728 A CN103965728 A CN 103965728A CN 201310043259 A CN201310043259 A CN 201310043259A CN 103965728 A CN103965728 A CN 103965728A
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Abstract
A special hydrophobic coating for an aluminum strip is a coating coated on a metal plate. The special hydrophobic coating is produced by adopting a routine production technology of coatings, and is characterized in that the special hydrophobic coating comprises 25-35wt% of a water-soluble acrylic resin, 5-15wt% of amino resin for coatings, 1-4wt% of water-soluble epoxy resin, 0.5-2.0wt% of water-soluble silicone oil, 0.5-1.5wt% of dimethyl ethanolamine, 0.5-1.5wt% of ethylene glycol monobutylether, 0.1-0.4wt% of dinonylnaphthalenedisulphonic acid, 0.3-0.8wt% of NP-40 polyoxyethylene nonyl phenyl ether, and the balance purified water. The surface of the aluminum strip is coated with the coating obtained in the invention through a roller coating technology to form the hydrophobic aluminum strip, and use and examination results show that compared with common aluminum strips in the prior art, the coated aluminum strip obtained in the invention has a good hydrophobic function, the contact angle of water drops on the surface of the aluminum strip is 155-165DEG, and the water drops do not adhere with each other, and highly likely tumble; and the hydrophobic aluminum strip can be used in a refrigeration system in order to improve the heat exchange effect, reduce energy consumption and prolong the service life.
Description
Technical field
The invention belongs to the coating being coated on sheet metal, particularly the special hydrophobic coating of a kind of aluminum strip.
Background technology
Hydrophobic nature, also claims hydrophobicity, is that material is a kind of while contacting with water in air can not be by the character of water-wet.Reason is when between material molecule and water molecules, interactional force of cohesion is less than the force of cohesion between water molecules, water molecules can not spread and scatter at material surface, can only roll at material surface glomeration, roll on lotus leaf, so be commonly called as lotus leaf effect just as the globule.Now, in the junction of material, water and air, the interior angle becoming with material surface along the tangent line on water droplet surface, i.e. 90 ° of contact angle θ >, material presents hydrophobic nature; In contrast, when the interactional force of cohesion between material molecule and water molecules is greater than the force of cohesion between water molecules, water molecules will inevitably spread and scatter at material surface.Now, in the junction of material, water and air, the interior angle becoming with material surface along the tangent line on water droplet surface, i.e. contact angle θ≤90 °, material presents wetting ability.
Do not there is the common aluminium of hydrophobic nature, or wetting ability aluminium uses in refrigerating environment time, when surface temperature is during lower than the dew point of ambient air, hydrogenesis in ambient air becomes water droplet, not only reduce the heat exchange effect of refrigeration system, thereby increase energy consumption, increased the corrosion chance of aluminium material surface, reduction of service life simultaneously.Especially when air-conditioning is in the time that outside air sub-zero zero environment heats work, the heat-exchanging part of outdoor body is being born sending into after outdoor heat conversion indoor, the water droplet that heat-exchanging part surface condensation becomes must be frozen into frost and be attached to surface in outside air sub-zero zero environment, cause heat exchange effect sharply to reduce on the one hand, on the other hand in order to ensure the operation that works on, the air-conditioning heating operation of having to temporarily stop, reinstate defrosting program, refrigerating operaton in reverse direction, to produce the frost that heat becomes to remove outdoor body heat replacement part surface condensation in the heat-exchanging part of outdoor body, this has just caused the waste of the defrosting energy, air-conditioning heating effect low in the time that outside air sub-zero zero environment carries out heating operation.
As can be seen here, study and prepare one and be coated on aluminum strip surface, the special hydrophobic coating that makes it the aluminum strip with hydrophobic function is necessary.
Summary of the invention
The object of the invention is to make up the deficiencies in the prior art, study and prepare one and be coated on aluminum strip surface, make it the special hydrophobic coating of the aluminum strip with hydrophobic function.
The object of the present invention is achieved like this: the special hydrophobic coating of a kind of aluminum strip, adopt the manufacture of coating conventional production process, and it is characterized in that its component and weight proportion are: water soluble acrylic resin 25-35%; Coating aminoresin 5-15%; Water-soluble epoxy resin 1-4%; Water-soluble silicon oil 0.5-2.0%; Dimethylethanolamine 0.5-1.5%; Second diether monobutyl ether 0.5-1.5%; Dinonylnaphthalene disulfonic acid 0.1-0.4%; NP-40 polyoxyethylene nonylphenol ether 0.3-0.8%; All the other add pure water to 100%.
Formation and Action Specification to its component are as follows:
Water soluble acrylic resin: acrylic resin is the resin of being made up of esters of acrylic acid and methyl acrylic ester and other olefinic type monomers copolymerization, and water soluble acrylic resin comprises Emulsion acrylic resin, aqueous acrylic resin dispersion (also claiming water-dilutable vinylformic acid) and the acrylic resin aqueous solution.Emulsion is mainly emulsified in water under water-based free radical initiator causes synthetic by oiliness vinyl monomer, resin water dispersion is by free radical solution polymerization or progressively the different technique such as solution polymerization is synthetic.From particle diameter: emulsion particle diameter > resin water dispersion particle diameter > aqueous solution particle diameter.In the present invention by with the aminoresin adding, epoxy resin in functional group reactions form reticulated structure, be main film-forming components.
Coating aminoresin: coating aminoresin is a kind of multi-functional compound, with the compound and aldehydes (the being mainly formaldehyde) addition condensation that contain (NH2) functional group, the methylol (CH2OH) then generating and aliphatic monobasic alcohol part etherificate or the product that all etherificate two obtains.If use separately aminoresin as coating, make paint film too hard, and embrittlement, poor to substrate adhesion, so conventionally and can be compatible with aminoresin, and share by heating crosslinkable other type of resin, in the present invention, as the linking agent of acrylic resin, epoxy resin, after coating is dry, increase tenacity and the moisture resistance of film.
Water-soluble epoxy resin: epoxy resin is the general name with low molecular weight substance and the crosslinking curing product thereof of two or more epoxy group(ing) in molecule.The molecular structure of epoxy resin is to contain active epoxide group in molecular chain as its feature, epoxide group can be positioned at the end, centre of molecular chain or structure circlewise, owing to containing active epoxide group in molecular structure, make them can form with polytype solidifying agent generation crosslinking reaction insoluble, the molten cancellated superpolymer of three-dimensional that has.Water-soluble epoxy resin typically refers to emulsion, water dispersion or the aqueous solution that epoxy resin is scattered in water to be formed with particulate, drop or colloidal form, and the difference between three is the particle diameter difference of epoxy resin disperse phase.In the present invention by with the acrylic resin adding, aminoresin in functional group reactions form reticulated structure, be important film-forming components.
Water-soluble silicon oil: water-soluble silicon oil is first by the chlorosilane generation polysiloxane that is hydrolyzed, then with polysiloxane-many alkoxyl groups ether copolymer that polyethers condensation forms, in the present invention, as flow agent, for improving the levelling property of coating, make film level and smooth, bright.
Dimethylethanolamine: being called for short DMEA, is colourless volatile liquid, has ammonia taste, in the present invention as the solubility promoter of other components.
Ethylene glycol monobutyl ether: chemical structural formula C3H7CH2OCH2CH2OH, in the present invention as the solubility promoter of other components.
Dinonylnaphthalene disulfonic acid: Chinese another name: DNNDSA; English name is Naphthalenedisulfonicacid, and the English another name of dinonyl-is Dinonylnaphthalenedisulfonicacid; Nacure155CAS; Molecular formula: C28H44O6S2, in the present invention as the catalyzer of other components.
NP-40 polyoxyethylene nonylphenol ether: the English chemical name of polyoxyethylene nonylphenol ether: Polyoxy ethrlene nonylphinyl ether, trade(brand)name: TX-n, NP-n, chemical constitution is nonyl phenol and ethyleneoxide addition resultant of reaction, its active matter content >=99%, in the present invention as wetting agent and the emulsifying agent of other components.
Pure water: pure water refers to water free from foreign meter, make and form by electrodialyzer method or ion-exchanger method or reverse osmosis method or distillation method and other suitable working methods, sense index comprises colourity, turbidity, stink, naked eyes visible, in the present invention as solvent.
Described coating conventional production process is manufactured, and refers to the Production Flow Chart that adopts common coating: the dispersion of the component of comprise by practicing before standard or processing requirement, get the raw materials ready → needs disperseing → and by be in harmonious proportion → inspection of film-forming components, adjuvant component, solvent → pack.
The special hydrophobic coating of aluminum strip that the invention process obtains, also claims hydrophobic coating, or is commonly called as lotus leaf coating.Adopt the roller coating technology flow process of degreasing → washing, passivation → dry → roller coat → baking-curing film to be coated on aluminum strip surface, warp is tried out and checks, and has shown following beneficial effect compared with the conventional aluminium band of prior art:
1, the aluminum strip surface applying has good hydrophobic function.The aluminum strip surface glomeration globule that water droplet obtains in the invention process, the globule is 155 °-165 ° at the contact angle on aluminum strip surface, the globule seldom sticks each other, very easily tumbles.
2, the aluminum strip applying is used in refrigeration system, has improved heat exchange effect, thereby has reduced energy consumption, has reduced the corrosion chance causing in aluminium material surface because of water droplet condensation simultaneously, has extended work-ing life.
Embodiment
The special hydrophobic coating of a kind of aluminum strip, adopts the manufacture of coating conventional production process, it is characterized in that its component and weight proportion are: water soluble acrylic resin 25-35%; Coating aminoresin 5-15%; Water-soluble epoxy resin 1-4%; Water-soluble silicon oil 0.5-2.0%; Dimethylethanolamine 0.5-1.5%; Second diether monobutyl ether 0.5-1.5%; Dinonylnaphthalene disulfonic acid 0.1-0.4%; NP-40 polyoxyethylene nonylphenol ether 0.3-0.8%; All the other add pure water to 100%.
1 one kinds of special hydrophobic coatings of aluminum strip of embodiment, adopt the manufacture of coating conventional production process, and its component and weight proportion are: water soluble acrylic resin 25%; Aminoresin 5% for coating; Water-soluble epoxy resin 1%; Water-soluble silicon oil 0.5%; Dimethylethanolamine 0.5%; Second diether monobutyl ether 0.5%; Dinonylnaphthalene disulfonic acid 0.1%; NP-40 polyoxyethylene nonylphenol ether 0.3%; All the other add pure water to 67.1%.
2 one kinds of special hydrophobic coatings of aluminum strip of embodiment, adopt the manufacture of coating conventional production process, and its component and weight proportion are: water soluble acrylic resin 35%; Aminoresin 15% for coating; Water-soluble epoxy resin 4%; Water-soluble silicon oil 2.0%; Dimethylethanolamine 1.5%; Second diether monobutyl ether 1.5%; Dinonylnaphthalene disulfonic acid 0.4%; NP-40 polyoxyethylene nonylphenol ether 0.8%; All the other add pure water to 39.8%.
3 one kinds of special hydrophobic coatings of aluminum strip of embodiment, adopt the manufacture of coating conventional production process, it is characterized in that its component and weight proportion are: water soluble acrylic resin 30%; Aminoresin 10% for coating; Water-soluble epoxy resin 2%; Water-soluble silicon oil 1.0%; Dimethylethanolamine 1.0%; Second diether monobutyl ether 1.0%; Dinonylnaphthalene disulfonic acid 0.2%; NP-40 polyoxyethylene nonylphenol ether 0.5%; All the other add pure water to 54.3%.
4 one kinds of special hydrophobic coatings of aluminum strip of embodiment, adopt the manufacture of coating conventional production process, and its component and weight proportion are: water soluble acrylic resin 28%; Aminoresin 8% for coating; Water-soluble epoxy resin 3%; Water-soluble silicon oil 1.5%; Dimethylethanolamine 0.8%; Second diether monobutyl ether 0.8%; Dinonylnaphthalene disulfonic acid 0.3%; NP-40 polyoxyethylene nonylphenol ether 0.6%; All the other add pure water to 57%.
5 one kinds of special hydrophobic coatings of aluminum strip of embodiment, adopt the manufacture of coating conventional production process, and its component and weight proportion are: water soluble acrylic resin 32%; Aminoresin 12% for coating; Water-soluble epoxy resin 2.5%; Water-soluble silicon oil 1.5%; Dimethylethanolamine 1.2%; Second diether monobutyl ether 1.2%; Dinonylnaphthalene disulfonic acid 0.25%; NP-40 polyoxyethylene nonylphenol ether 0.4%; All the other add pure water to 48.95%.
Claims (6)
1. the special hydrophobic coating of aluminum strip, adopts the manufacture of coating conventional production process, it is characterized in that its component and weight proportion are: water soluble acrylic resin 25-35%; Coating aminoresin 5-15%; Water-soluble epoxy resin 1-4%; Water-soluble silicon oil 0.5-2.0%; Dimethylethanolamine 0.5-1.5%; Second diether monobutyl ether 0.5-1.5%; Dinonylnaphthalene disulfonic acid 0.1-0.4%; NP-40 polyoxyethylene nonylphenol ether 0.3-0.8%; All the other add pure water to 100%.
2. the special hydrophobic coating of a kind of aluminum strip according to claim 1, is characterized in that its component and weight proportion are: water soluble acrylic resin 25%; Aminoresin 5% for coating; Water-soluble epoxy resin 1%; Water-soluble silicon oil 0.5%; Dimethylethanolamine 0.5%; Second diether monobutyl ether 0.5%; Dinonylnaphthalene disulfonic acid 0.1%; NP-40 polyoxyethylene nonylphenol ether 0.3%; All the other add pure water to 67.1%.
3. the special hydrophobic coating of a kind of aluminum strip according to claim 1, is characterized in that its component and weight proportion are: water soluble acrylic resin 35%; Aminoresin 15% for coating; Water-soluble epoxy resin 4%; Water-soluble silicon oil 2.0%; Dimethylethanolamine 1.5%; Second diether monobutyl ether 1.5%; Dinonylnaphthalene disulfonic acid 0.4%; NP-40 polyoxyethylene nonylphenol ether 0.8%; All the other add pure water to 39.8%.
4. the special hydrophobic coating of a kind of aluminum strip according to claim 1, is characterized in that its component and weight proportion are: water soluble acrylic resin 30%; Aminoresin 10% for coating; Water-soluble epoxy resin 2%; Water-soluble silicon oil 1.0%; Dimethylethanolamine 1.0%; Second diether monobutyl ether 1.0%; Dinonylnaphthalene disulfonic acid 0.2%; NP-40 polyoxyethylene nonylphenol ether 0.5%; All the other add pure water to 54.3%.
5. the special hydrophobic coating of a kind of aluminum strip according to claim 1, is characterized in that its component and weight proportion are: water soluble acrylic resin 28%; Aminoresin 8% for coating; Water-soluble epoxy resin 3%; Water-soluble silicon oil 1.5%; Dimethylethanolamine 0.8%; Second diether monobutyl ether 0.8%; Dinonylnaphthalene disulfonic acid 0.3%; NP-40 polyoxyethylene nonylphenol ether 0.6%; All the other add pure water to 57%.
6. the special hydrophobic coating of a kind of aluminum strip according to claim 1, is characterized in that its component and weight proportion are: water soluble acrylic resin 32%; Aminoresin 12% for coating; Water-soluble epoxy resin 2.5%; Water-soluble silicon oil 1.5%; Dimethylethanolamine 1.2%; Second diether monobutyl ether 1.2%; Dinonylnaphthalene disulfonic acid 0.25%; NP-40 polyoxyethylene nonylphenol ether 0.4%; All the other add pure water to 48.95%.
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| CN201310043259.XA CN103965728B (en) | 2013-02-05 | 2013-02-05 | The special hydrophobic coating of aluminum strip |
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| CN201310043259.XA CN103965728B (en) | 2013-02-05 | 2013-02-05 | The special hydrophobic coating of aluminum strip |
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| CN103965728A true CN103965728A (en) | 2014-08-06 |
| CN103965728B CN103965728B (en) | 2016-08-10 |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107936626A (en) * | 2017-11-16 | 2018-04-20 | 江门市亚国建筑涂料有限公司 | The anti-condensation coating of sink |
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| JP2003034774A (en) * | 2001-07-24 | 2003-02-07 | Daiho Toryo Kk | Coating composition for metal product |
| CN101016435A (en) * | 2007-01-12 | 2007-08-15 | 东莞市东阳光电容器有限公司 | Water dispersibility and high corrosion resistance aluminum foil paint for air-conditioning and preparing method thereof |
| CN101712833A (en) * | 2009-12-15 | 2010-05-26 | 重庆斯耐博涂料有限公司 | Water-based environment-friendly finishing paint and preparation method thereof |
| CN101735703A (en) * | 2009-12-15 | 2010-06-16 | 重庆斯耐博涂料有限公司 | Aqueous environment-friendly packaging steel drum paint and preparation method thereof |
| CN101818011A (en) * | 2010-04-28 | 2010-09-01 | 常州市科祥化工有限公司 | Water-based acrylic acid tape primer and preparation method thereof |
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2013
- 2013-02-05 CN CN201310043259.XA patent/CN103965728B/en active Active
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2003034774A (en) * | 2001-07-24 | 2003-02-07 | Daiho Toryo Kk | Coating composition for metal product |
| CN101016435A (en) * | 2007-01-12 | 2007-08-15 | 东莞市东阳光电容器有限公司 | Water dispersibility and high corrosion resistance aluminum foil paint for air-conditioning and preparing method thereof |
| CN101712833A (en) * | 2009-12-15 | 2010-05-26 | 重庆斯耐博涂料有限公司 | Water-based environment-friendly finishing paint and preparation method thereof |
| CN101735703A (en) * | 2009-12-15 | 2010-06-16 | 重庆斯耐博涂料有限公司 | Aqueous environment-friendly packaging steel drum paint and preparation method thereof |
| CN101818011A (en) * | 2010-04-28 | 2010-09-01 | 常州市科祥化工有限公司 | Water-based acrylic acid tape primer and preparation method thereof |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107936626A (en) * | 2017-11-16 | 2018-04-20 | 江门市亚国建筑涂料有限公司 | The anti-condensation coating of sink |
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| CN103965728B (en) | 2016-08-10 |
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Address after: 212000 Shangdang Town Guild Industrial Park, Dantu District, Zhenjiang City, Jiangsu Province Patentee after: JIANGSU WANYUAN NEW MATERIALS CO.,LTD. Address before: 212000 Shangdang Town Guild Industrial Park, Dantu District, Zhenjiang City, Jiangsu Province Patentee before: JIANGSU WANYUAN NEW MATERIAL Co.,Ltd. |
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Address after: 212000 Shangdang Town Guild Industrial Park, Dantu District, Zhenjiang City, Jiangsu Province Patentee after: JIANGSU WANYUAN NEW MATERIAL Co.,Ltd. Address before: 212124 No. 2 Xingye North Road, Xue Village, Shanghui Town, Dantu District, Zhenjiang City, Jiangsu Province Patentee before: ZHENJIANG WANYUAN ELECTRONICS Co.,Ltd. |
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