CN209352808U - A kind of corrosion-resistant color coating aluminium volume - Google Patents
A kind of corrosion-resistant color coating aluminium volume Download PDFInfo
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- CN209352808U CN209352808U CN201822008738.9U CN201822008738U CN209352808U CN 209352808 U CN209352808 U CN 209352808U CN 201822008738 U CN201822008738 U CN 201822008738U CN 209352808 U CN209352808 U CN 209352808U
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Abstract
A kind of corrosion-resistant color coating aluminium volume, substrate are aluminium skin, and the two sides of the aluminium skin are chemical conversion epithelium；The laterality of the aluminium skin is equipped with several holes for penetrating coating, is and the consistent penetrator of floating coat in described hole at priming coat, floating coat and finishing coat, the priming coat is successively arranged outside epithelium；The chemical conversion epithelium is oxidation film layer；The priming coat is bi-component epoxy priming paint film layer；The floating coat is the first paint film layer of polyester containing zinc；The finishing coat is the second paint film layer of polyester containing zinc.Pass through multiple coating on the surface of substrate aluminium skin; form coating best in quality; improve the weatherability of color coating aluminium volume; and metallic zinc is added in floating coat, finishing coat; the anodic protection that electrochemistry is connected is formed with substrate aluminium skin, is that the corrosion-resistant color coating aluminium volume of final products has preferable corrosion resistance.
Description
Technical field
The color coating aluminium volume that the utility model relates to a kind of for manufacturing aluminium-plastic panel, especially surface has corrosion-resistant function
Color coating aluminium volume.
Background technique
Aluminium-plastic panel is introduced into from Germany from late nineteen eighties the early 1990s in last century as a kind of new decorative material
State, just with its economy, the diversity of optional color, convenient and fast construction method, excellent processing performance, excellent fire line and
Noble quality, has been favored by people rapidly.
Aluminium-plastic panel is combined by multilayer material, and upper and lower level is high purity aluminum alloy plate, and centre is that nontoxic low-density is poly-
Layer protecting film is also pasted in ethylene (PE) core plate, front.For outdoor, aluminium-plastic panel front surface coated fluorocarbon resin (PVDF) is applied
Layer.
Conventionally, when aluminium-plastic panel produces, first need to make the color coating aluminium volume with certain color, function, it then will be color
Aluminising volume is combined on core plate, to form aluminium-plastic panel；As the aluminium-plastic panel of outdoor application, the fluorocarbon resin of surface coating is applied
Layer is that coating is got on when manufacturing color coating aluminium volume.
When conventional production color coating aluminium volume, aluminium is rolled up and carries out blowing, cleaning, chemical conversion, then carries out external coating, solidification, winding,
Form satisfactory color coating aluminium volume.
Color coating aluminium as outdoor use aluminium-plastic panel is rolled up, and fluorocarbon resin coating is often used as coated coating, which has resistance to
The comprehensive performance for the multinomial suitable outdoor application conditions such as Hou Xing, heat resistance be good, therefore be widely adopted.But in actual use process
In, it has been found that because hardness is larger after fluorocarbon resin coating solidification, cause to easily lead to coating peeling, cracking etc. when aluminium furls
Problem；And with the expansion of aluminium-plastic panel application environment, the demand of more multi-functional aspect is more and more, especially many outdoor decorations
The aluminium-plastic panel of use also increases the demands such as corrosion-resistant, therefore needs to be made new color coating aluminium volume of corrosion resistant coating.
In industrial circle, to the metal component that open air uses, generally corrosion resistant coating can be applied on surface and carried out at surface
Reason；Common corrosion-resistant surface coating has zinc-rich paint, is corroded by the sacrifice of metallic zinc, to slow down the corruption to substrate
Erosion；Conventional use of zinc-rich paint, wherein zinc content is 85% or more, and signal layer coating thickness is at 100 microns or more, for up to
To effective anti-corrosion, coating obtains 2 layers or more, and after the metallic zinc on such surface is sacrificed, the zinc in middle layer, primer coating remains to send out
Effective antisepsis is played in the effect of waving.
But zinc-rich paint is generally only suitable for the preservative treatment of steel construction, and on the one hand these steel constructions use outdoors
The time limit can reach decades or even upper a century, need regularly to brush zinc-rich paint again and carry out anti-corrosion protection；On the other hand,
Coating layer thickness will not influence its structural strength on steel construction piece.
But it is produced above in the color coating aluminium of aluminium-plastic panel volume, since aluminium volume itself is relatively thin, generally at 1-2 millimeters or so, if
Layer 2-3 is applied, 100 microns every layer of coating can seriously affect the winding of color coating aluminium volume, therefore be directed to the color coating of outdoor aluminium-plastic panel
Aluminium volume, in conjunction with existing zinc-rich paint characteristic, it is necessary to improve production technology, develop and be more in line with color coating aluminium volume using characteristic
Coating, to meet the use demand of outdoor corrosion-resisting aluminium mould plate.
Utility model content
The purpose of the utility model is to overcome defects in the prior art, provide a kind of corrosion-resistant color coating aluminium volume, base
Material is aluminium skin, and the two sides of the aluminium skin are chemical conversion epithelium；Be successively arranged on the chemical conversion epithelium of any side of aluminium skin priming coat,
Floating coat and finishing coat are equipped with several holes for penetrating coating in the priming coat, and filling is full in described hole and floating coat one
The penetrator of cause；
The chemical conversion epithelium is oxidation film layer；
The priming coat is bi-component epoxy priming paint film layer；
The floating coat is the first polyester paint containing zinc；First polyester paint containing zinc is mixed into certain using Polyester Paint as base-material
The zinc powder of amount；After the solidification of the first polyester paint containing zinc, metal Zn content is 40%-50%(mass fraction in nonvolatile component)；
The finishing coat is the second polyester paint containing zinc, and second polyester paint containing zinc is using colorful polyester paint as base-material, face
Color is to provide color required for aluminising volume, and be mixed into a certain amount of zinc powder wherein；After the solidification of the second polyester paint containing zinc,
Metal Zn content is 80%-90%(mass fraction in nonvolatile component).
The chemical conversion leather film thickness is 10-30 μm as a further improvement of the utility model,.
The primer thickness is 20-40 μm as a further improvement of the utility model,.
Coating thickness is 60-80 μm as a further improvement of the utility model,.
The color of floating coat is to provide color required for color coating aluminium volume as a further improvement of the utility model,.
Finishing coat is as a further improvement of the utility model, with a thickness of 30-50 μm.
The utility model has the beneficial effects that: passing through multiple coating on the surface of substrate aluminium skin, formed best in quality
Coating, improves the weatherability of color coating aluminium volume, and metallic zinc is added in floating coat, finishing coat, forms electrification with substrate aluminium skin
The anodic protection for learning conducting is that the corrosion-resistant color coating aluminium volume of final products has preferable corrosion resistance.
Detailed description of the invention
Fig. 1 is a kind of overall structure diagram of corrosion-resistant color coating aluminium volume of the utility model；
Fig. 2 is the production schematic diagram of the utility model color coating aluminium volume；
Fig. 3 is that the utility model color coating aluminium rolls up production porcupine roller structural schematic diagram；
Fig. 4 is that the utility model color coating aluminium volume production porcupine roller uses schematic diagram.
Specific embodiment
Below in conjunction with the drawings and specific embodiments, the utility model is described further.
As shown in Figure 1, for a kind of overall structure diagram of corrosion-resistant color coating aluminium volume of the utility model；A kind of corrosion-resistant coloured silk
Aluminising volume has the aluminium skin 1 as substrate first, and the reset condition of the aluminium skin 1 is aluminium volume, is cleaned after uncoiling, then
It is melted into, forms chemical conversion epithelium 2 on the top and bottom of aluminium skin 1；Coating process is carried out at the surface of epithelium 2 in laterality again,
Priming coat 3, floating coat 4 and finishing coat 5 are sequentially formed after baking and curing；It is to be coated to install complete, priming coat when producing priming coat 3
When 3 surface drying, using porcupine roller thorn priming coat 3, several holes for penetrating coating are formed, and then in the coating of coating floating coat 4,
Middle coating can penetrate into hole, and formation penetrates priming coat 3, the penetrator 6 being in contact with chemical conversion epithelium 2.
The chemical conversion epithelium 2 is that 1 surface of aluminium skin is made to generate chemical oxidation effect via chromate agent, raw on 1 surface of aluminium skin
At one layer of fine and closely woven and stable oxidation film layer, i.e. chemical conversion epithelium 2 makes coating suction in coating with good adsorption capacity
Attached property is reinforced.When it is cleaned, chemical conversion 1 surface of aluminium skin formed chemical conversion epithelium 2 after, dried, be transferred to painting immediately after
Wiring carries out the coating effect of priming coat 3, to ensure to be melted into the degree of oxidation and cleannes of epithelium 2；The change of 1 other side of aluminium skin
It is protective layer at epithelium 2, the later period is used to compound with core plate.The thickness of the chemical conversion epithelium 2 is generally at 10-30 μm；Its film thickness is such as
Less than 10 μm, then it will lead to and be easily oxidized corrosion for coating side aluminium skin 1, influence the storage and transportation and use of color coating aluminium volume after coating；
And such as larger than 30 μm of film thickness, then it will lead to that film thickness is excessive again, increase the hardness of aluminium skin 1, oxidation film occurs hard crisp in winding, produces
Raw removing, influences quality.
The priming coat 3 is that bi-component epoxy priming paint closes aluminium skin 1 with good bonding force, makes its tool
There is good weatherability；The cured thickness of the priming coat 3 is 20-40 μm, excessively thin, easily leads to covering unevenness, adhesive force is not
By force, blocked up to lead to overweight coating, production cost is undoubtedly increased, and solidification process needs to extend, and influences throughput rate.
The floating coat 4 is the first polyester paint containing zinc, and first polyester paint containing zinc is mixed into certain using Polyester Paint as base-material
The zinc powder of amount；After the solidification of the first polyester paint containing zinc, metal Zn content is 40%-50%(mass fraction in nonvolatile component)；
Its base-material Polyester Paint and the priming coat 3 have good associativity, after solidification with a thickness of 60-80 μm, there is good knot
Structure intensity can play the role of stronger mechanism supports.Further, it is furnished with pigment in the polyester paint that the floating coat 4 uses,
Its color is to provide color required for color coating aluminium volume.
The finishing coat 5 is the second polyester paint containing zinc, and second polyester paint containing zinc is using colorful polyester paint as base-material, face
Color is to provide color required for aluminising volume, and be mixed into a certain amount of zinc powder wherein；After the solidification of the second polyester paint containing zinc,
Metal Zn content is 80%-90%(mass fraction in nonvolatile component).Solidify coating 5 below with a thickness of 30-50 μm.
In the utility model, it is mixed into the zinc powder of different proportion in polyester paint, forms the first polyester paint containing zinc, second containing zinc
Polyester paint is used separately as floating coat 4, finishing coat 5, and floating coat 4 is directly connected by penetrator 6 and chemical conversion epithelium 2, aluminium skin 1,
By forming electrochemistry conducting, makes the corrosion current of substrate aluminium skin 1, be conducted to floating coat 4, finishing coat 5 through penetrator 6；Face applies
Zinc content is high in layer 5, and the zinc powder corroded in existing finishing coat 5 is corroded, and realizes the anodic protection to aluminium skin 1；It is applied to face
After zinc powder in layer 5 gradually corrode, finishing coat 5 is formed and is partially stripped, and floating coat 4 remains to play protective action at this time, and one
Polyester Paint content is higher in aspect floating coat 4, and weatherability is more preferable；Contain a certain amount of zinc powder in another aspect floating coat 4, it can
Continue anodic protection, extends the service life of aluminium skin 1；And floating coat 4 equally has color effect, it visually can be true
Protect the beauty of aluminium-plastic panel.
Further, distribution density of the penetrator 6 on priming coat 3 is 2000-300/square metres；It is described to wear
Saturating body 6 is near cylindrical, a diameter of 1-2mm.Corresponding porcupine roller is equipped with elastic steel-needle, and steel needle diameter is 1-2mm, pricks
On coating, hole is formed after steel needle leaves coating；Steel needle is arranged in parallel on roller, is divided into 2cm, adjacent row between every row's steel needle
The needle point spacing of steel needle is 2cm, is rotated so that with porcupine roller, forms a certain number of holes on coating and is used to accommodate polyester containing zinc
Paint, and then form penetrator 6.
Fig. 2 show a kind of production process schematic diagram of corrosion-resistant color coating aluminium volume of the utility model, and light aluminium volume unreels, through de-
Aluminium skin 1, is then delivered in chemical conversion pond by rouge, cleaning, the impurity that removal light aluminium volume is produced, generated in transportational process on surface,
Surface oxidation treatment is carried out, chemical conversion epithelium 2 is formed, subsequent aluminium skin 1 is oven-dried, cools down；According to production needs, aluminium volume at this time can
To be wound into chemical conversion aluminium volume, independent storage and transportation processing or transfer are carried out；But in the utility model, preferable mode is, by aluminium skin 1
It is fed directly to paint booth, in paint booth, with coating roller to 1 coating priming coat 3 of aluminium skin, after coating, is sent to surface drying room,
Porcupine roller is equipped in surface drying room, the priming coat 3 by porcupine roller on 1 surface of aluminium skin, which is pricked, forms hole, then carries out to priming coat 3
It is further heating and curing, is finally transported in cooling chamber, then coating cooling and solidifying is wound；The aluminium volume wound at this time is bottom
Aluminising volume；Aluminium volume is re-used as aluminium volume among color coating, before transporting paint booth, is unreeled, coating floating coat 4, and at this time first
Polyester paint containing zinc not only can be in floating coat 4, but also the first polyester paint containing zinc can enter in hole, forms penetrator 6；In middle painting
After 4 coating of layer, aluminium volume, which is delivered to, heats room, successively carries out surface drying, heating sizing, heating cure, finally cooling, winding；Finally
Before the aluminium volume of floating coat 4 transports paint booth again, being unreeled, coating finishing coat 5, finishing coat 5 is coated in 4 surface of floating coat,
Coating, which finishes, successively carries out surface drying, heating sizing, heating cure, and finally cooling, winding forms the corrosion-resistant color coating of final product
Aluminium volume.Porcupine roller according to demand, puts down or packs up；According to the solidifying requirements of priming coat 3, floating coat 4, finishing coat 5, adjustment heating
Indoor temperature, solidifies coating sufficiently, then through cooling, winding forms color coating aluminium volume.In heating room, the top of cooling chamber, if
There is VOC burning recovery room, the poisonous and harmful VOC gas that will be generated during curing of coatings are burnt or recycled, it is ensured that empty
It is then exhausted from after gas purification.
The structural schematic diagram of the porcupine roller is as shown in figure 3, its use process is as shown in Figure 4.The porcupine roller is by cylindrical roller
Body 11, and the composition of acupuncture treatment 12 throughout its surface, the service conditions that acupuncture treatment 12 is rolled up according to corrosion-resistant color coating aluminium, design is reasonable to divide
Cloth spacing forms 2000-300/square metres of holes, on priming coat 3 for accommodating the first polyester paint containing zinc；Formal production
When, roll body 11 drops to 1 top of aluminium skin under the control of lifting device, is equipped with support roller 13 in the downside of aluminium skin 1, plays preferably
Supporting role, at this time have an acupuncture treatment 12 be located at 11 lowermost end of roll body needle point can directly be contacted with aluminium skin 1, to priming coat 3 formation
It pierces through, support roller 13 is used to play a supporting role, and when eliminating 12 pairs of contacts of aluminium skins 1 of acupuncture treatment, generates deformation to aluminium skin 1, influences aluminium
The surface quality of volume.
The preferred embodiment created to the utility model above is illustrated, but the utility model is created not
It is only limitted to the embodiment, those skilled in the art go back under the premise of without prejudice to the utility model creative spirit
Various equivalent variation or replacement can be made, these equivalent modifications or replacement are all contained in the claim of this application and are limited
In the range of.
Claims (5)
1. a kind of corrosion-resistant color coating aluminium volume, substrate is aluminium skin, which is characterized in that the two sides of the aluminium skin are chemical conversion epithelium；It is described
It is successively arranged priming coat, floating coat and finishing coat on the chemical conversion epithelium of any side of aluminium skin, is set in the floating coat and priming coat
There are several holes for penetrating coating, fills the full and consistent penetrator of finishing coat in described hole；
The chemical conversion epithelium is oxidation film layer；
The priming coat is bi-component epoxy priming paint film layer；
The floating coat is the first polyester paint containing zinc；
The finishing coat is the second polyester paint containing zinc.
2. a kind of corrosion-resistant color coating aluminium volume as described in claim 1, which is characterized in that the chemical conversion leather film thickness is 10-30 μ
m。
3. a kind of corrosion-resistant color coating aluminium volume as described in claim 1, which is characterized in that the primer thickness is 20-40 μm.
4. a kind of corrosion-resistant color coating aluminium volume as described in claim 1, which is characterized in that coating thickness is 60-80 μm.
5. a kind of corrosion-resistant color coating aluminium volume as described in claim 1, which is characterized in that finishing coat is with a thickness of 30-50 μm.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201822008738.9U CN209352808U (en) | 2018-12-03 | 2018-12-03 | A kind of corrosion-resistant color coating aluminium volume |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201822008738.9U CN209352808U (en) | 2018-12-03 | 2018-12-03 | A kind of corrosion-resistant color coating aluminium volume |
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| Publication Number | Publication Date |
|---|---|
| CN209352808U true CN209352808U (en) | 2019-09-06 |
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ID=67798179
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| CN201822008738.9U Active CN209352808U (en) | 2018-12-03 | 2018-12-03 | A kind of corrosion-resistant color coating aluminium volume |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113321991A (en) * | 2021-03-19 | 2021-08-31 | 常熟科弘材料科技有限公司 | Wear-resistant household appliance color-coated steel plate and preparation method thereof |
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2018
- 2018-12-03 CN CN201822008738.9U patent/CN209352808U/en active Active
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113321991A (en) * | 2021-03-19 | 2021-08-31 | 常熟科弘材料科技有限公司 | Wear-resistant household appliance color-coated steel plate and preparation method thereof |
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