CN101104167B - Method for manufacturing hydrophilic aluminium foil - Google Patents
Method for manufacturing hydrophilic aluminium foil Download PDFInfo
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- CN101104167B CN101104167B CN2007100676777A CN200710067677A CN101104167B CN 101104167 B CN101104167 B CN 101104167B CN 2007100676777 A CN2007100676777 A CN 2007100676777A CN 200710067677 A CN200710067677 A CN 200710067677A CN 101104167 B CN101104167 B CN 101104167B
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Abstract
The invention relates to the components of the general heat exchange or heat transfer equipment in the heat exchange field, more particularly, relates to the making method of the hydrophilic aluminum foil. The invention mainly solves technique problems of bad hydrophilic property and low corrosion resistance of the prior art; the invention provides the making method of environment-friendly high performance hydrophilic aluminum foil with reasonable design, excellent hydrophilic property and rather strong corrosion resistance. The invention has the major technique proposal that: the curing method of the coating layer develops into an advancer and evener air cushion suspension type hot blast circulation heating means from the original infrared heating means by adopting the two-coating and two-baking technique.
Description
Technical field
The present invention relates to the interchangeable heat exchange in general heat exchange field or the parts of heat-transfer equipment, especially relate to a kind of manufacture method of hydrophilic aluminium foil.
Background technology
Hydrophilic aluminium foil be a kind of be the composite of base material with the aluminium foil, promptly have the good thermal diffusivity of normal aluminium foil, have corrosion resistance and hydrophily that normal aluminium foil does not possess again, be heat exchanger of air condition with the substitute products of normal aluminium foil.
The hydrophily aluminium foil surface has stronger hydrophily, on air-conditioning, use, can make the globule that the moisture in the hot-air condenses on heat exchanger fin be easy to drawout and flow away downwards along sheet material, can avoid like this because of the globule between the heat exchanger fin " bridging " influences the ventilation effect of heat exchanger, thereby make rate of heat exchange improve 5%.Hydrophilic aluminium foil also has other advantages in addition: anticorrosion, mould proof, free from extraneous odour; Because the no globule can correspondingly reduce the air-conditioning noise that vibrations cause; Can prevent that the air-conditioner oxide powder is blown into indoorly has a negative impact compliance with environmental protection requirements to human body; Can improve the corrosion resistance and the weatherability of heat exchanger, prolong the service life of heat exchanger.
The hydrophilic paper tinsel product of used for air conditioner radiation fin increases fast along with air-conditioner and grows simultaneously, while market is highly reliable to health environment-friendly, energy saving, hydrophily, the long-life of product, corrosion resistance is had higher requirement, and has also indicated the direction of hydrophilic aluminium foil technical development.Therefore develop environment-friendly type, the high-performance hydrophilic aluminium foil will become the air-conditioner development trend, to satisfy on the market requirement to energy-conserving and environment-protective, the antibiotic air-conditioning of corrosion resistant.
Hydrophilic paper tinsel coating includes numerous areas such as chemical machine, inorganic chemistry, macromolecular material.Early stage one-component coating hydrophilic paper tinsel only has one deck corrosion-resistant finishes, and that uses in the European market is more, and because of its production cost is lower, but to the serious wear of punching out film tool, durable hydrophilic property is poor.20 end of the centurys, is the manufacturer of representative in market, Asia with the Japanese enterprises, develop novel punch press and adapt to the hydrophilic paper tinsel product of this punch press punching out requirement, this product adopts the organic coating coating, it is strong to have corrosion resistance, durable hydrophilic property is good and to advantages such as film tool wearing and tearing are little, the product combination property obviously is better than the hydrophilic paper tinsel of inorganic coating, therefore obtained the extensive use of air-conditioner enterprise very soon, but because of its production cost height, it is with the obvious advantage that corrosion resistance and durable hydrophilic property do not have dual-component coating, easy xanthochromia during welding has influenced it to a certain extent and has further applied.
Several stages has been experienced in hydrophilic paper tinsel production, singly is coated with by the baking of the earliest list and develops into present two being coated with of two bakings, and Japan, Korea S etc. also have three to dry by the fire three and be coated with.Coating is also developed into by single coating and twoly is coated with organic coating, two inorganic coatings that are coated with, and three are coated with organic coating etc.It is all fine singly to be coated with index such as hydrophilic, salt fog of product initial stage, but permanent hydrophilic is very poor, and the staple market is representative in Europe with Germany and Italy.The early stage coating apparatus of introducing of China all adopts European coating.Two every performances of product that are coated with all are better than the present product that singly is coated with, and Japan succeeds in developing the two products that are coated with of two bakings the earliest.Test stone and Nippon Standard that we adopt are very close, and China adopts two air-conditionings that are coated with explained hereafter also to obtain international endorsement.Two being coated with is corrosion-resistant coating and hydrophilic coating, for the punch press punching out of being more convenient for, increases the lubricated of drift and mould, the loss that reduces wear and bring to punch press, and states such as Japan, Korea S have invented three bakings three again and have been coated with technology, have promptly increased lubricious coating together.China's hydrophilic coating is started late, but develop very fast, the existing every index of coating all meets or exceeds Japanese like product, and the process research of China coating producer, trial-produce hydrophilic coating successfully and added lubricant coating technology, promptly face is coated with and contains lubricated composition in the product, reduced one procedure when producing hydrophilic paper tinsel, guaranteed the very low coefficient of punch press wearing and tearing, reached the performance of three layers of coating of state such as Japanese, for hydrophilic paper tinsel manufacturer has reduced cost.
Existing hydrophilic paper tinsel production is divided into two kinds of organic coating and inorganic coatings, the organic coating occupation rate of market is bigger, every combination property is better, the inorganic coating advantage is that permanent hydrophilic is fine, because of the silicon composition is arranged in the inorganic coating, hydrophilic diffusion is had good effect, but inorganic coating is more serious to the punch press wearing and tearing because of siliceous.The most of hydrophilic paper tinsel of organic coating that adopts of China air-conditioner manufacturer.
The aluminium foil product very easily corrodes, hydrophilic paper tinsel is untapped come out before, alumium Foil for air conditioner adopts the light paper tinsel, air-conditioner is after using several years, aluminium foil is rotted by the wet gas corrosion gradually, becomes white powder, air-conditioner is shorter service life.
Summary of the invention
The present invention solves low etc. the technical problem of existing in prior technology hydrophily difference and corrosion resistance; Provide a kind of reasonable in design, excellent hydrophilic and than the manufacture method of the environment-friendly type high performance hydrophilic aluminium foil of strong corrosion resistant.
Above-mentioned technical problem of the present invention is mainly solved by following technical proposals: the manufacture method of hydrophilic aluminium foil the steps include:
1) preliminary treatment: degreaser is sprayed onto on the aluminium foil, extracts degreaser with squeeze roll then, again clear water is sprayed onto on the aluminium foil, extract clear water, then adopt temperature, at last cooling at normal temperatures at 60 ℃ to 100 ℃ hot blast heating, drying aluminium foil with squeeze roll;
2) apply corrosion-resistant coating: adopt the mode of roller coating that corrosion resistant coating is coated on the aluminium foil, use infrared ray heating, drying moisture again, the active ingredient of corrosion resistant coating is solidificated on the aluminium foil, cool off aluminium foil at last at normal temperatures;
3) apply hydrophilic coating: adopt the mode of roller coating that hydrophilic coating is coated on the aluminium foil, heat aluminium foil with hot blast, the oven dry of the moisture in the coating is removed, then coating active ingredient is solidificated on the aluminium foil, coating and aluminium foil are combined closely, at last cooling at normal temperatures.
As preferably, described coating hydrophilic coating, wherein the method for hot blast heating aluminium foil is: aluminium foil supports by the blast of nozzle ejection up and down in solidifying case, and aluminium foil is the air-flotation type operation, and hot blast is dried aluminium foil simultaneously.
As preferably, described preliminary treatment, skimming temp is 50 ℃～70 ℃, the defatted concd pH value is controlled at 10～12.
As preferably, described preliminary treatment, water temperature will reach 50 ℃～70 ℃ during cleaning, water purity is 20 μ s/cm～20 μ s/cm, last one rinse water electrical conductivity will be controlled at 5 μ s/cm～20 μ s/cm, and nozzle exit pressure will reach 100 kPas, and scavenging period is 3 seconds～7 seconds.
As preferably, described infrared ray heating, drying and curing, temperature is 230 ℃～240 ℃ of plate temperature for the primary coat solidification temperature, it is 250 ℃ of plate temperature that face is coated with solidification temperature.
Therefore, the present invention has following advantage:
The hydrophilic angle control of the initial stage of hydrophilic aluminium foil reaches≤and 5 °;
Permanent hydrophilic angle≤15 of hydrophilic aluminium foil °;
The salt spray test R.NO. of hydrophilic aluminium foil 〉=more than 9.8,80% print reaches 10 grades;
Hydrophilic aluminium foil will substitute uncoated smooth paper tinsel with the characteristics such as health environment-friendly, hydrophily and corrosion resistance of himself.
Hydrophilic paper tinsel production technology becomes advanced now " two be coated with two bakings " technology by original " singly being coated with single baking " technological development, and the curing mode of coating also develops into more advanced, more uniform air cushion suspension type hot air circulation mode of heating by former infrared ray mode of heating.Hydrophilic aluminium foil has excellent hydrophilic and than the environment-friendly type high performance of strong corrosion resistant.
The specific embodiment
Below by embodiment, and in conjunction with the accompanying drawings, technical scheme of the present invention is described in further detail.
Embodiment 1:
The hydrophilic aluminium foil production process is:
(1) adopts " two be coated with two bakings " production Technology, produce and have the hydrophilic aluminium foil that good hydrophilicity has stronger corrosion resistance again.
Primary coat claims corrosion-resistant coating again, and the coating way of employing is the two-sided while coating of strip, and it is opposite with strip tape transport direction to be coated with the roller rotation direction, promptly reverse coating.Purpose is to be coated with the last layer anticorrosive paint equably on the two sides of aluminium foil, makes the purpose that aluminium foil reaches increases service life.
Face is coated with and claims hydrophilic coating, and its operation principle is identical with primary coat, and purpose is to be coated with the last layer hydrophilic coating equably on the two sides, outside of primary coat, make that water droplet spreads rapidly on the fin, water droplet does not contact between two fins, can't form the water bridge, reduce windage, reach purpose of energy saving.Air conditioner is in when work, and indoor hot-air becomes the globule through radiator, condenser, discharges outdoorly, reaches cooling effect.Hot-air is met cold meeting and is become the globule, because of spacing of fin very little, the globule of the product fin of process hydrophilic coating is not difficult for diffusion or discharges, the globule forms the water bridge between two fins, increase windage, under the situation of equal refrigerating capacity, will increase without the air-conditioning power consumption of hydrophilic treated, and noise, vibrations also can increase.
(2) preliminary treatment comprises degreasing and cleans two parts, degreasing is to utilize commercially available degreasing metal liquid, rely on pump pressure, degreaser is sector shape by nozzle to be beaten up and down on the aluminium foil strip, by squeeze roll most of degreaser is squeezed back degreasing bath again, avoid rinse water to pollute, purpose is to remove strip residual greasy dirt and impurity after annealing.In order to reach degreasing effect preferably, through evidence, 50 ℃～70 ℃ temperature degreasing effects are best, and very short because of the strip skimming processes, in about 1～2 second, the defatted concd pH value is controlled at 10～12.Degreaser is squeezed into by one degreasing bath in back, overflows to preceding one degreasing bath, and overflow discharging again can guarantee that degreaser is not contaminated.
Cleaning is the deionized water of crossing through counter-infiltration and ion-exchange treatment, rely on pump pressure, be on the sector shape by nozzle, following beating on strip, by squeeze roll water is squeezed out again, purpose is that degreaser is removed totally fully, because degreaser is a chemical products, as remain on the strip, to follow-up coating adhesion, the influence of salt fog index is bigger, in order to reach optimal cleaning effect, require water temperature will reach between 50 ℃～70 ℃, and will have a rinse bath that temperature requirement is arranged at least, the water purity requirement is lower than 20 μ s/cm, last one rinse water electrical conductivity will be controlled in the 20 μ s/cm, and nozzle exit pressure will reach nozzle exit pressure will reach 100 kPas, and scavenging period can not be lower than 3 seconds.
Overflow wash cycles mode together, is cleaned up to first road before overflowing to in the end to squeeze into together by pure water again, discharges then, can guarantee the purity of last one rinse water like this.How many pure water production line squeezes into, and polluting more serious first road cleaning is that how many dense water are discharged in overflow, i.e. using water wisely can better be played cleaning action again.Pure water adopts reverse osmosis unit and ion interchange unit, can guarantee that pure water conductivity reaches instructions for use.
(3) solidify employing Switzerland BNB dry technology, the interior injector configuration up and down of curing oven is air-flotation type, and casing is used the mechanism that can open automatically instead, has improved the automated procedures of equipment, makes curing of coating more abundant, more even.Solidify and promptly pass through the heating heating mode, make the moisture removal in the strip coating, make solids content firmly attached on the aluminium foil.Require to solidify and want thoroughly coating and aluminium foil are united two into one.
The coating curing mode is divided into two kinds of infrared ray heating, hot blast heating.Infrared ray is heated to be hundreds of infra-red heat fluorescent tubes and is evenly arranged in the baking and curing case, and upper and lower distribution is wanted rationally, and fluorescent tube and strip distance are suitable, greatly 100 to 400 millimeters of distances, and the nearly fragile fluorescent tube of distance, the distance solidification effect is bad, and takes.Infrared ray heating advantage be energy-conservation, the cooling that heats up is fast, clean etc., shortcoming is that fluorescent tube is fragile, curing uniformity is relatively poor.
Hot blast is heated to be the heating of electric heating wind.Hot blast heating advantage is even, thorough for solidifying, and burn-off phenomenon can not appear in coating, and shortcoming is that heating-cooling speed is slower.Hot blast is ejected on the strip equably by tuyere, is heated evenly, and solidification effect is good, and hot blast temperature is at 60 ℃ to 100 ℃.Strip is leaned on the blast of nozzle ejection up and down in solidifying case, be the air-flotation type operation.Solidify no tension force in the case, can reduce strip because of stressed distortion that be heated.
Infrared ray heating is used for the curing of strip after the preliminary treatment.
Hot blast heating is used to apply the oven dry of strip after curing after hydrophilic coating applies and the preliminary treatment.
Corrosion resistant coating is commercially available water machine resin structure, and composition is mainly water, and it is 20% that primary coat contains admittedly, and face is coated with that to contain admittedly be 10%.At first should remove the oven dry of the moisture in the coating in solidification process, then coating active ingredient is solidificated on the strip, the primary coat solidification temperature is 230 ℃～240 ℃ of plate temperature, and it is 250 ℃ of plate temperature that face is coated with solidification temperature, but instantaneous solidification.Priming coat solidifies bad, defectives such as adhesion, acid-fast alkali-proof is poor, salt fog is defective can occur, and it is bad that face is coated with curing, is prone to defectives such as sticking to mould, coating shedding.In order to reach solidification effect, require spin manifold temperature is often monitored, adjusted, spin manifold temperature should generally be set between 300 ℃～320 ℃ greater than the plate temperature.
(4) adopt the aluminium foil base material of good mechanical performance, improved the punching out performance of hydrophilic paper tinsel.The now day high punch presses that adopt of China air-conditioner factory more, as U.S., Haier, Changhong, Glan benevolence bodyguard etc.Punch press speed is fast, the fin forming.Day, high punch press was had relatively high expectations to the raw material aluminium foil, and mechanical performance tensile strength is greater than 130Mpa, and percentage elongation is greater than 10%, and Erichsen number is greater than 5mm.The existing casting material of China 1100 alloys commonly used, aluminium foils such as 8011 alloys defectives such as cracking, mashed hole often occur when punching out, can't satisfy the requirement of air-conditioner manufacturer.At the problems referred to above, each aluminium foil manufacturer oneself has developed the product of high machine uses in suitable day such as 3102 alloys, 1030B alloy.What the present invention adopted is 3102 alloys or 1030B alloy.
(5) hydrophilic coating is irritated to being coated with on the roller, by being coated with the rotation of roller, hydrophilic coating successively is coated on the two-sided surface of aluminium foil, hydrophilic coating is that the main component that commercially available " Baiyun District new city in Guangzhou bright good new material firm " produces is the hydrophilic coating of acrylic resin.By adjusting the coating solidification temperature, regulating and be coated with the roller rotating speed, with film thickness monitoring at 1.0～1.3g/m
2In the scope.The coating solidification temperature is 260 ℃～270 ℃, and being coated with the roller rotating speed is 60 rev/mins～180 rev/mins.
Specific embodiment described herein only is that the present invention's spirit is illustrated.The technical staff of the technical field of the invention can make various modifications or replenishes or adopt similar mode to substitute described specific embodiment, but can't depart from spirit of the present invention or surmount the defined scope of appended claims.
Claims (4)
1. the manufacture method of a hydrophilic aluminium foil the steps include:
1) preliminary treatment: degreaser is sprayed onto on the aluminium foil, extracts degreaser with squeeze roll then, again clear water is sprayed onto on the aluminium foil, extract clear water, then adopt temperature, at last cooling at normal temperatures at 60 ℃ to 100 ℃ hot blast heating, drying aluminium foil with squeeze roll;
2) apply corrosion-resistant coating: adopt the mode of roller coating that corrosion resistant coating is coated on the aluminium foil, use infrared ray heating, drying moisture again, the active ingredient of corrosion resistant coating is solidificated on the aluminium foil, cool off aluminium foil at last at normal temperatures;
3) apply hydrophilic coating: adopt the mode of roller coating that hydrophilic coating is coated on the aluminium foil, heat aluminium foil with hot blast, the oven dry of moisture in the coating is removed, then coating active ingredient is solidificated on the aluminium foil, coating and aluminium foil are combined closely, at last cooling at normal temperatures, wherein the method for hot blast heating aluminium foil is: aluminium foil is in solidifying case, blast by nozzle ejection up and down supports, and aluminium foil is the air-flotation type operation, and hot blast is dried aluminium foil simultaneously.
2. the manufacture method of hydrophilic aluminium foil according to claim 1 is characterized in that, described preliminary treatment, and skimming temp is 50 ℃～70 ℃, the defatted concd pH value is controlled at 10～12.
3. the manufacture method of hydrophilic aluminium foil according to claim 1, it is characterized in that, described preliminary treatment, water temperature will reach 50 ℃～70 ℃ during cleaning, water purity is for being lower than 20 μ s/cm, last one rinse water electrical conductivity will be controlled at 5 μ s/cm～20 μ s/cm, and nozzle exit pressure will reach 100 kPas, and scavenging period is 3 seconds～7 seconds.
4. the manufacture method of hydrophilic aluminium foil according to claim 1 is characterized in that, described infrared ray heating, drying and curing, and temperature is 230 ℃～240 ℃ of plate temperature for the primary coat solidification temperature, it is 250 ℃ of plate temperature that face is coated with solidification temperature.
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| CN2007100676777A CN101104167B (en) | 2007-03-29 | 2007-03-29 | Method for manufacturing hydrophilic aluminium foil |
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| CN2007100676777A CN101104167B (en) | 2007-03-29 | 2007-03-29 | Method for manufacturing hydrophilic aluminium foil |
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| CN101104167B true CN101104167B (en) | 2010-10-20 |
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Families Citing this family (11)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101906559B (en) * | 2010-07-15 | 2012-08-08 | 镇江鼎胜铝业股份有限公司 | Air-conditioner foil material and manufacturing method of energy-saving high-performance air-conditioner foil |
| CN101948973A (en) * | 2010-10-27 | 2011-01-19 | 镇江鼎胜铝业股份有限公司 | Energy-saving air conditioner foil and manufacturing method thereof |
| CN103112210A (en) * | 2012-12-31 | 2013-05-22 | 黄山天马铝业有限公司 | Super-hydrophilic antibacterial aluminum foil and preparation method thereof |
| CN104087137B (en) * | 2014-06-16 | 2016-05-04 | 华南理工大学 | Hydrophilic aluminium foil of a kind of photo-thermal dual-cured coating and its preparation method and application |
| CN106179916A (en) * | 2016-08-27 | 2016-12-07 | 合肥普庆新材料科技有限公司 | A kind of preparation method of freezing coated aluminum foil |
| CN110216056A (en) * | 2019-07-01 | 2019-09-10 | 江苏金天辰新材料有限公司 | A kind of manufacturing method of corrosion-proof wear colored coating aluminium foil |
| CN111389693A (en) * | 2020-04-02 | 2020-07-10 | 安徽金誉材料股份有限公司 | Production process of hydrophilic aluminum foil for air conditioner |
| CN111992463A (en) * | 2020-08-31 | 2020-11-27 | 包头常铝北方铝业有限责任公司 | Coating aluminum foil for air conditioner radiating fin and preparation method thereof |
| CN113883882B (en) * | 2021-08-23 | 2023-03-24 | 茌平阳之光亲水箔有限公司 | Energy-saving consumption-reducing system and method for hydrophilic foil processing |
| CN114260165A (en) * | 2021-12-24 | 2022-04-01 | 江苏金天辰新材料有限公司 | High-corrosion-resistance hydrophilic aluminum foil based on renewable resources and processing device thereof |
| CN114289282A (en) * | 2021-12-30 | 2022-04-08 | 江苏鼎胜新能源材料股份有限公司 | Preparation method of water-bridge-free fin |
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| CN1892166A (en) * | 2005-07-01 | 2007-01-10 | 松下电器产业株式会社 | Aluminium foil for heat exchanger, its making method and heat exchanger using same and air conditioner |
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2007
- 2007-03-29 CN CN2007100676777A patent/CN101104167B/en not_active Expired - Fee Related
Patent Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1181404A (en) * | 1997-10-20 | 1998-05-13 | 常州市兴荣机电制造有限公司 | Film-forming agent for hydrophilic and corrosion resistant film, its precoated film aluminium foil and film forming method |
| CN2497885Y (en) * | 2001-09-18 | 2002-07-03 | 陕西省户县东方机械厂 | Layered oven for hydrophilic aluminium foil coating apparatus |
| CN1892166A (en) * | 2005-07-01 | 2007-01-10 | 松下电器产业株式会社 | Aluminium foil for heat exchanger, its making method and heat exchanger using same and air conditioner |
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