CN109852234A - A kind of high-performance, extra-weather-proof, heavy antisepsis aluminum alloy pattern plate proprietary powder coatings for building and its preparation method and application - Google Patents
A kind of high-performance, extra-weather-proof, heavy antisepsis aluminum alloy pattern plate proprietary powder coatings for building and its preparation method and application Download PDFInfo
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Abstract
The present invention relates to a kind of high-performance, extra-weather-proof, heavy antisepsis aluminum alloy pattern plate proprietary powder coatings for building, raw material composition and its mass fraction are as follows: 10~30 parts of hydrogenated bisphenol A epoxy resin；30~60 parts of organic siliconresin；Hydrogenated bisphenol A epoxy resin solidifies 1~6 part of latent curing agent of crosslinking；The solidification crosslinking of organic hydroxy silicate resin uses 6~18 parts of curing agent；0.1~0.5 part of 2- phenylimidazole；5~10 parts of polyvinyl butyral；0.3~0.5 part of styrax；0.3~1.0 part of levelling agent；10~30 parts of super-fine silicon micro-powder；5~10 parts of toughened and reinforced material；0~1 part of pigment.This coating makes that film acid and alkali-resistance, resistance to water logging, fast light, weather resistance is excellent, addition toughening, supporting material improve the performances such as stretch-proof, tear-proof, the shock resistance of film in formulation for coating material simultaneously, meet the technical requirements that aluminium film plate for building is recycled 300 times.
Description
Technical field
The invention belongs to powder coating technology fields, are related to the coating and protection of aluminum alloy pattern plate for building, especially a kind of high
Performance, extra-weather-proof, heavy antisepsis aluminum alloy pattern plate proprietary powder coatings for building and its preparation method and application.
Background technique
The building template of early stage mostly uses wood materials, due to the wood materials disadvantages such as that there are water absorption rates is high, intensity is low, after
Mostly use steel material, but the defect of steel material is unfavorable for operating it is also obvious that easy-to-rust, cumbersome.Recently as
There is aluminum alloy material template and (goes through in the use in existing more than 50 years of the developed countries such as America and Europe in the reduction of aluminum alloy material cost
History).Advantageous feature of the aluminum template system in construction is as follows:
(1) 80% module can be recycled in multiple projects in aluminum template system, and average use cost is low, a set of
Good aluminum template system can be recycled 300 times or more, be conducive to standardized work.
(2) simply, conveniently, general module weight is no more than 20kg for aluminum template system assembling, and carrying, construction etc. are very convenient.
(3) have a wide range of application, bearing capacity height, most modules can carry 60KN/ ㎡
(4) recovery value is high, and aluminum alloy pattern plate recycles residual value after scrapping higher, and it is obvious to share cost advantage equally, low-carbon environment-friendly,
Meet country to construction project energy-saving and environmental protection, low-carbon, emission reduction regulation.
Initial aluminum dipping form plate surface mostly uses chromaking to handle, and applies one layer of release agent again using preceding, but chromaking treatment process
In be easy to cause environmental pollution, violated the environmental requirement of national green production, the application of this surface treatment method will be by
Limitation.Powdery paints kind currently on the market has: the poly- mixed type of pure epoxy type, ring, pure polyester-type, polyurethane-type, acrylic acid
Type, fluorine carbon type etc., the most commonly used is first four kinds, latter two less use at home.Common pure epoxy type powder coating is anti-to ground
Rotten better performances, the disadvantage is that weatherability is poor, it should not open air use, the poly- mixed powder coating of ring and pure epoxy type powder coating
Can be close, decorative more preferable, equally also unsuitable outdoor use.Pure polyester-type and polyurethane-type weatherability are preferable, and suitable open air makes
With, but resistance to acid and alkali is poor, it is poor to the antiseptic property of ground.Develop the comprehensive performances such as a kind of high-performance, extra-weather-proof, heavy antisepsis
Excellent powdery paints becomes the task of top priority come the coating and protection for meeting aluminum alloy pattern plate for building.
By retrieval, about the report in terms of architectural aluminum section powdery paints, but this profile is mostly disposably to make
With no comparativity is used for multiple times with building template circulation, not yet finds that relevant to present patent application patent disclosure is literary
It offers.
Summary of the invention
It is an object of the invention to provide a kind of dedicated high property of aluminum alloy pattern plate for building in place of overcome the deficiencies in the prior art
Powdery paints of excellent combination properties such as energy, extra-weather-proof, heavy antisepsis and its preparation method and application, use the paint spraying aluminum dipping form
Film acid and alkali-resistance, resistance to water logging, fast light, weatherability, stretch-proof, tear-proof, shock resistance after plate etc. are had excellent performance, and suitable open air is built
The specific condition built meets the technical requirements that aluminium film plate for building is recycled 300 times.
The technical solution adopted by the present invention to solve the technical problems is:
A kind of high-performance, extra-weather-proof, heavy antisepsis aluminum alloy pattern plate proprietary powder coatings for building, raw material composition and its mass parts
Number are as follows:
Moreover, the epoxide number of the hydrogenated bisphenol A epoxy resin is between 0.41~0.44eq/100g, hydrolyzable chlorine <
0.01eq/100g, viscosity are the numerical value under the conditions of 25 DEG C in 2500~4500MPa.s.
Moreover, the hydroxy radical content of the organic siliconresin is between 0.35%~0.55%.
Moreover, the latent curing agent that the hydrogenated bisphenol A epoxy resin solidifies crosslinking is micro mist dicyandiamide, the double cyanogen of micro mist
For the average grain diameter D50 of amine at 2.3 ± 0.2 μm, maximum particle diameter D100 is used for hydrogenated bisphenol A epoxy resin solidification crosslinking at 6 μm
Latent curing agent.
Moreover, the NCO content for solidifying crosslinking curing agent of the organic hydroxy silicate resin is 14.8%~15.7%, glass
Glass temperature is at 41~53 DEG C.
Moreover, the diphenyl-imidazole is the stable On The Latent Accelerator For Epoxy Resin of performance, fusing point 140~
147℃。
Moreover, the polyvinyl butyral is intermediate molecular weight, moderately viscous powdery resin；Alternatively, described super
8 microns of D50=2.5-of thin silicon powder, mesh number are 2000-6000 mesh.
Moreover, the toughened and reinforced material is H200, the toughness of film can be effectively improved.
High-performance, extra-weather-proof, heavy antisepsis aluminum alloy pattern plate proprietary powder coatings for building preparation method as described above, step
It is as follows:
(1) hydrogenated bisphenol A epoxy resin and organic siliconresin are pre-mixed, then in 90 DEG C of Ith area, 115 DEG C of IIth area item
Through double screw extruder extrusion, to be broken into coarse granule shape spare under part；
(2) by step, (1) coarse granular material obtained and other materials are put into premixing machine and be sufficiently mixed 10 minutes, standby
With；
(3) double screw extruder is warming up to: I 90 DEG C of area；Start extruder behind II 110 DEG C of area, (2) step is uniformly mixed
Material squeezed out, tabletting, it is spare after cooled to room temperature；
(4) open (3) material that flour mill prepares step to be screened, powder processed, cross 200 mesh screens, packing and binding are
Obtain finished product.
High-performance, extra-weather-proof, heavy antisepsis aluminum alloy pattern plate proprietary powder coatings for building as described above are in aluminium film plate for building
In application.
The advantages of present invention obtains and good effect are as follows:
1, high epoxy value hydrogenated bisphenol A epoxy resin is added in the present invention in formula system and latent curing agent micro mist is double
Under the catalysis of diphenyl-imidazole curing reaction occurs for cyanamide, provides good substrate adhesion and very high crosslinking for film
Density, so that film Tg is up to 80 DEG C or more, so that film has good resistance to marring, while it is resistance to well also to assign film
Time property and acid and alkali-resistance and flooding.
2, organic hydroxy silicate resin and blocked isocyanate curing system are introduced into formula by the present invention makes film weather-proof
Property, resistance to flooding further increase, while reducing the surface tension of film so that mold releasability is more convenient.
3, the method have the characteristics that introducing two different curing systems in formula system, high adhesion force is both met
It is required that and meet the requirement of low surface tension, simultaneously because the factors such as curing rate difference of two kinds of systems have film
There is certain wrinkle effect, demoulding back wall surface, which does not have to reprocessing nature, just certain roughness, secondary convenient for finishing etc.
Construction.
4, (common to apply the method have the characteristics that the shock resistance of film reaches 2.4 times of ordinary powder coating or more
The shock resistance standard of film is: 50 μm/50kg.cm passes through), this coating reaches: 50 μm/120kg.cm passes through.
5, coating of the present invention makes that film acid and alkali-resistance, resistance to water logging, fast light, weather resistance is excellent, is suitble to the spy of outdoor building
Different condition, while addition toughening, supporting material improve the performances such as stretch-proof, tear-proof, the shock resistance of film in formulation for coating material,
Meet the technical requirements that aluminium film plate for building is recycled 300 times.
Detailed description of the invention
Fig. 1 is the effect picture after 50 μm/120kg.cm of the positive and negative impact of floating coat of the present invention；
Fig. 2 is surface tension test pen picture used in the present invention；
Fig. 3 is the DSC map of black aluminum alloy pattern plate powdery paints made from the embodiment of the present invention 1.
Specific embodiment
The embodiment of the present invention is described in detail below, it should be noted that the present embodiment is narrative, is not limited
, this does not limit the scope of protection of the present invention.
Raw material used in the present invention is unless otherwise specified conventional commercial product；Used in the present invention
Method is unless otherwise specified the conventional method of this field.
Embodiment 1
A kind of high-performance, extra-weather-proof, heavy antisepsis black aluminum alloy pattern plate proprietary powder coatings for building, raw material composition and its matter
Amount are as follows:
High-performance, extra-weather-proof, heavy antisepsis aluminum alloy pattern plate proprietary powder coatings for building preparation method as described above, step
It is as follows:
(1) hydrogenated bisphenol A epoxy resin and organic siliconresin are pre-mixed according to the proportion of above-mentioned formula, are then existed
Through double screw extruder extrusion, to be broken into coarse granule shape spare under the conditions of I 90 DEG C of area, 115 DEG C of IIth area.
(2) coarse granular material made from (1) and other materials are put into togerther premixing machine and are sufficiently mixed (10 minutes)
It is spare.
(3) double screw extruder is warming up to: I 90 DEG C of area；Start extruder behind II 110 DEG C of area, (2) are uniformly mixed
Material squeezed out, tabletting, spare after cooled to room temperature.
(4) it opens ACM vertical pulverizer to screen the material that (3) prepare, powder processed, cross 200 mesh screens, is packaged dress
Case (every case net weight 20Kg) is got product.
The DSC map of this black aluminum alloy pattern plate powdery paints is as shown in Figure 3.
Embodiment 2
A kind of high-performance, extra-weather-proof, heavy antisepsis aluminum alloy pattern plate proprietary powder coatings for building, raw material composition and its quality
Are as follows:
Wherein, the polyvinyl butyral is medium-viscosity resin, and the trade mark SD-3, SD-4, SD-5 are proper；
The styrax scientific name diphenylhydroxyethanone is also benzoin, and fusing point is at 133~137 DEG C；
The levelling agent (788) is the universal levelling agent of Ningbo South-sea Chemical Co., Ltd.'s production.
High-performance, extra-weather-proof, heavy antisepsis aluminum alloy pattern plate proprietary powder coatings for building preparation method as described above, step
With embodiment 1.
Embodiment 3
A kind of high-performance, extra-weather-proof, heavy antisepsis aluminum alloy pattern plate proprietary powder coatings for building, raw material composition and its mass parts
Number are as follows:
More preferably, the epoxide number of the hydrogenated bisphenol A epoxy resin is between 0.41~0.44eq/100g, hydrolyzable chlorine
< 0.01eq/100g, viscosity are the numerical value under the conditions of 25 DEG C in 2500~4500MPa.s；For example, the hydrogenated bisphenol A ring
Oxygen resin is AL-3040, is the special epoxy resin without unsaturated bonds such as double bonds in a kind of molecule, its main feature is that excellent weather resistance and hard
It is different, with substrate adhesion is good, process industrial art performance is good.
More preferably, the hydroxy radical content of the organic siliconresin is between 0.35%~0.55%, for example, the organosilicon tree
Rouge is SY300, is the organic siliconresin rich in hydroxyl of German Wacker production.
More preferably, it is micro mist dicyandiamide that the hydrogenated bisphenol A epoxy resin, which solidifies the latent curing agent of crosslinking, and micro mist is double
At 2.3 ± 0.2 μm, maximum particle diameter D100 is used for hydrogenated bisphenol A epoxy resin solidification and hands over the average grain diameter D50 of cyanamide at 6 μm
The latent curing agent of connection.
More preferably, the NCO content for solidifying crosslinking curing agent of the organic hydroxy silicate resin is 14.8%~15.7%,
Glass transition temperature is at 41~53 DEG C.For example, the solidification crosslinking of organic hydroxy silicate resin is B1530 with curing agent, B1530 is closing
Type isocyanate curing agent, the solidification for organic hydroxy silicate resin are crosslinked.
More preferably, the diphenyl-imidazole is the stable On The Latent Accelerator For Epoxy Resin of performance, and fusing point is 140
~147 DEG C.
More preferably, the polyvinyl butyral is intermediate molecular weight, moderately viscous powdery resin；Alternatively, described
8 microns of the D50=2.5-of super-fine silicon micro-powder, mesh number are 2000-6000 mesh.
More preferably, the toughened and reinforced material (H200) is a toughened and reinforced of Shanghai Hua Jue Chemical Co., Ltd. production
Product can effectively improve the toughness of film.
High-performance, extra-weather-proof, heavy antisepsis aluminum alloy pattern plate proprietary powder coatings for building preparation method as described above, step
It is as follows:
(1) hydrogenated bisphenol A epoxy resin and organic siliconresin are pre-mixed, then in 90 DEG C of Ith area, 115 DEG C of IIth area item
Through double screw extruder extrusion, to be broken into coarse granule shape spare under part；
(2) by step, (1) coarse granular material obtained and other materials are put into premixing machine and be sufficiently mixed 10 minutes, standby
With；
(3) double screw extruder is warming up to: I 90 DEG C of area；Start extruder behind II 110 DEG C of area, (2) step is uniformly mixed
Material squeezed out, tabletting, it is spare after cooled to room temperature；
(4) open (3) material that flour mill prepares step to be screened, powder processed, cross 200 mesh screens, packing and binding are
Obtain finished product.
High-performance, extra-weather-proof, heavy antisepsis aluminum alloy pattern plate proprietary powder coatings for building can be applied and built as described above
With in aluminium film plate.
Through detecting, the main performance of present invention aluminum alloy pattern plate proprietary powder coatings for building are as follows: glossiness: 45-50 ° of (60 ° of angles
Standard GB/T9754)；Levelability: 26mm；"/180 DEG C of curing activity: 100-110；Adhesive force: I grade；Impact: by positive and negative
50kg (50 μm of standards of film thickness: GB/T1732), as shown in Figure 1；Weatherability: I grade (executing standard GB/T1865-1997)；Film
Surface tension: (ordinary powder coating film coated surface tension is dyne test pen in 30mN/m or more determining instrument to 27mN/m, is such as schemed
Shown in 2), relatively low surface tension is easier mold releasability.
Although disclosing the embodiment of the present invention for the purpose of illustration, it will be appreciated by those skilled in the art that: not
Be detached from the present invention and spirit and scope of the appended claims in, various substitutions, changes and modifications be all it is possible, therefore, this
The range of invention is not limited to the embodiment and attached drawing disclosure of that.
Claims (10)
1. a kind of high-performance, extra-weather-proof, heavy antisepsis aluminum alloy pattern plate proprietary powder coatings for building, it is characterised in that: its raw material composition
And its mass fraction are as follows:
2. high-performance according to claim 1, extra-weather-proof, heavy antisepsis aluminum alloy pattern plate proprietary powder coatings for building, feature
Be: the epoxide number of the hydrogenated bisphenol A epoxy resin is between 0.41~0.44eq/100g, hydrolyzable chlorine < 0.01eq/
100g, viscosity are the numerical value under the conditions of 25 DEG C in 2500~4500MPa.s.
3. high-performance according to claim 1, extra-weather-proof, heavy antisepsis aluminum alloy pattern plate proprietary powder coatings for building, feature
Be: the hydroxy radical content of the organic siliconresin is between 0.35%~0.55%.
4. high-performance according to claim 1, extra-weather-proof, heavy antisepsis aluminum alloy pattern plate proprietary powder coatings for building, feature
Be: the latent curing agent that the hydrogenated bisphenol A epoxy resin solidifies crosslinking is micro mist dicyandiamide, and micro mist dicyandiamide is averaged
For partial size D50 at 2.3 ± 0.2 μm, maximum particle diameter D100 is used for the latency that hydrogenated bisphenol A epoxy resin solidifies crosslinking at 6 μm
Curing agent.
5. high-performance according to claim 1, extra-weather-proof, heavy antisepsis aluminum alloy pattern plate proprietary powder coatings for building, feature
Be: the NCO content for solidifying crosslinking curing agent of the organic hydroxy silicate resin is 14.8%~15.7%, glass transition temperature
At 41~53 DEG C.
6. high-performance according to claim 1, extra-weather-proof, heavy antisepsis aluminum alloy pattern plate proprietary powder coatings for building, feature
Be: the diphenyl-imidazole is the stable On The Latent Accelerator For Epoxy Resin of performance, and fusing point is at 140~147 DEG C.
7. high-performance according to claim 1, extra-weather-proof, heavy antisepsis aluminum alloy pattern plate proprietary powder coatings for building, feature
Be: the polyvinyl butyral is intermediate molecular weight, moderately viscous powdery resin；Alternatively, the super-fine silicon micro-powder
8 microns of D50=2.5-, mesh number be 2000-6000 mesh.
8. high-performance according to any one of claims 1 to 7, extra-weather-proof, heavy antisepsis aluminum alloy pattern plate special powder for building apply
Material, it is characterised in that: the toughened and reinforced material is H200, can effectively improve the toughness of film.
9. high-performance as claimed in any one of claims 1 to 8, extra-weather-proof, heavy antisepsis aluminum alloy pattern plate proprietary powder coatings for building
Preparation method, it is characterised in that: steps are as follows:
(1) hydrogenated bisphenol A epoxy resin and organic siliconresin are pre-mixed, then under the conditions of 90 DEG C of Ith area, 115 DEG C of IIth area
It is spare that coarse granule shape is broken into through double screw extruder extrusion；
(2) by step, (1) coarse granular material obtained and other materials are put into premixing machine and be sufficiently mixed 10 minutes, spare；
(3) double screw extruder is warming up to: I 90 DEG C of area；Start extruder behind II 110 DEG C of area, (2) object that step is uniformly mixed
Material squeezed out, tabletting, spare after cooled to room temperature；
(4) the flour mill material that (3) prepares step is opened to be screened, powder processed, cross 200 mesh screens, packing and binding up at
Product.
10. high-performance as claimed in any one of claims 1 to 8, extra-weather-proof, heavy antisepsis aluminum alloy pattern plate proprietary powder coatings for building
Application in aluminium film plate for building.
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201811582056.7A CN109852234B (en) | 2018-12-24 | 2018-12-24 | High-performance, super-weather-resistant and heavy-duty powder coating special for building aluminum template and preparation method and application thereof |
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|---|---|---|---|
| CN201811582056.7A CN109852234B (en) | 2018-12-24 | 2018-12-24 | High-performance, super-weather-resistant and heavy-duty powder coating special for building aluminum template and preparation method and application thereof |
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| CN109852234B CN109852234B (en) | 2020-11-27 |
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Cited By (5)
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| CN110643280A (en) * | 2019-10-22 | 2020-01-03 | 广西南宁维一防腐科技有限公司 | High-temperature-resistant flame-retardant powder coating and preparation method thereof |
| CN114042739A (en) * | 2021-12-02 | 2022-02-15 | 福建高全建材科技有限公司 | Recycling process of aluminum template |
| CN115011074A (en) * | 2021-08-20 | 2022-09-06 | 广东四会互感器厂有限公司 | Epoxy resin composition, preparation method and application thereof |
| CN115725215A (en) * | 2022-11-08 | 2023-03-03 | 擎天材料科技有限公司 | Powder coating easy to demould and preparation method and application thereof |
| CN116285664A (en) * | 2023-03-27 | 2023-06-23 | 河南协众新材料有限公司 | Special water-based paint for aluminum profile |
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| CN116285664A (en) * | 2023-03-27 | 2023-06-23 | 河南协众新材料有限公司 | Special water-based paint for aluminum profile |
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| CN109852234B (en) | 2020-11-27 |
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