CN104140746B - Compound functionalization infrared external reflection engineering machinery powdery paints and production technology thereof - Google Patents
Compound functionalization infrared external reflection engineering machinery powdery paints and production technology thereof Download PDFInfo
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
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Abstract
The present invention discloses a kind of compound functionalization infrared external reflection engineering machinery powdery paints and production technology thereof, and this powdery paints includes the component of following mass parts: polyester/acrylic resin complex 28 parts, 30 50 parts of polyester resin, epoxy modified acrylic resin 10 20 parts, infrared reflecting paint 15 35 parts, cross-linking agent 15 parts, filler 8 18 parts, auxiliary agent 1 2.5 parts；Its production technology uses supercritical carbon dioxide fluid method.This powdery paints i.e. has antiseptic and rustproof, to have again excellence weatherability, and its energy consumption in production process is little, efficiency is high, reduces production and processing temperature.
Description
Technical field
The present invention relates to engineering machinery powder coating technology field, specifically disclosed one is compound
Functionalization infrared external reflection engineering machinery powdery paints and production technology thereof.
Background technology
Along with powdery paints status in coating industry is more and more important, powdery paints is at us
Achieve quickly development in recent years, simultaneously because powder coating formulation does not contains atmospheric pollution
The organic solvents such as thing composition VOC, benzene,toluene,xylene, belong to environmentally friendly product,
There is the environmental benefit feature of excellence.Epoxy resin has good antiseptic property, acrylic acid tree
Fat has good weather resistance, and in recent years, the powder relating to epoxy or acrylic resin etc. is coated with
Material also develops rapidly, and it is resistance to that such as issued patent CN1202184C discloses a kind of thermosetting
Scraping outdoor low brightness paint powder, its main component includes epoxy radicals acrylic resin, isocyanuric acid
Three-glycidyl ester, bisphenol A type epoxy resin, carboxyl polyester resin, carboxy acrylic tree
Fat and filler and auxiliary agent, its gloss can control, and scratch resistance is preferable, but it is antirust
Antiseptic property is the most not enough.CN103289543A discloses a kind of automobile finish powder and is coated with
Material, its percentage by weight consists of the epoxy of the Hydroxylated acrylic resin of 3%-5%, 0.8-2.0%
Resin, the polyether ester of 12.5-14.5%, the polyester resin of 45%-50%, the February of 0.3%-0.6%
Cinnamic acid two fourth stannum, the Benzoinum of 0.4-0.6%, the levelling agent of 2%-2.2%, 22.5%-25.5%
The caprolactam of titanium dioxide and 8%-12% closes isophorone diisocyanate.This powdery paints
While ensureing elasticity and flexibility, improve wear-resisting type and the intensity of coating, but it is weather-proof
Property and corrosion resistance are the most not enough.Additionally, patent CN101289592A, CN101709164A
Also disclose that the powdery paints containing polyester resin and epoxy resin, but the weatherability of its coating and
Antirust, anti-corrosive ability Shortcomings too.
Along with the development of science and technology, engineering machinery field has focused on the outward appearance of engineering goods
On, new material, new technology and the coating process that some are creative have also been obtained popularization and
Use, but engineering machinery is because being a kind of outdoor type work mechanism, the most outdoor severe empty
The contact such as gas and severe water quality brings many adverse effects to it, and therefore engineering machinery is coated with
Antirust, anti-corrosive that one of core of packing quality is to ensure that and coating weatherability.And it is current, also
There is no a kind of features type thermosetting powder coating being specifically designed for construction machinery industry, therefore open
Send out existing epoxy anticorrosion performance a kind of there is again acrylic acid weather resistance and there is infrared external reflection simultaneously
The Composite functional type thermosetting engineering machinery powdery paints of function becomes the necessary of market.
Supercritical fluid refers to the fluid being under critical point temperatures above and pressure span,
Near The Critical Point, it may appear that the density of fluid, viscosity, dissolubility, thermal capacity, dielectric constant
Phenomenon jumpy is there is etc. the physical property of all fluids.Supercritical fluid has unique
Physicochemical properties, its density close to liquid, viscosity close to gas, diffusion coefficient is big,
Viscosity is little, dielectric constant is big, and diffusance is close to gas.It addition, according to pressure and temperature
Difference, this physical property can change, and the thermal capacity value of critical point steeply rises, almost
Infinity, reducing, if utilizing this characteristic rightly, can obtain one
The most outstanding hot media.Patent CN103055728A devise a kind of for preparing powder
The Supercritical fluid device of coating, its principle is exactly the supercriticality of carbon dioxide, but this sets
Standby introduction the most simply and not invention example.Additionally, patent CN101519545A is public
Open device and the production technology of a kind of preparing powder coating through supercritical carbon dioxide anti-solubility deposition,
This device include supercritical carbon dioxide antisolvent precipitation still, supercritical carbon dioxide outlet fluid with
Solid piece-rate system, compound compressor, the supercritical carbon dioxide storage tank dissolved with toluene, tubulation
The separator of heat exchanger, supercritical carbon dioxide and toluene.Although this production technology can overcome
Traditional powder coating in producing epoxy/polyester resin etc. carried out melting mixing, extruding film-making,
The steps such as extruding plate pulverizing, thus reduce production cost and energy consumption, but its production technology mistake again
In loaded down with trivial details, device device is various, and will control each factor well is not to be very easy to.
Therefore demand is a kind of has good antirust, anti-corrosive and the weather-proof powder meeting engineering machinery
Coating, and wish to prepare this powdery paints by with low cost, the simple production technology of technique.
Summary of the invention
It is an object of the invention to provide the powdery paints of a kind of compound functionalization infrared external reflection,
It has good antirust, anti-corrosive, a weatherability, acid and alkali-resistance, resistance to boiling water, damp and hot and salt fog etc.,
Disclosure satisfy that its performance is wanted by engineering machinery outdoor bad air, water quality impact for a long time
Ask.
Further object is that the powder that a kind of compound functionalization infrared external reflection is provided
The production technology of end coating, this production technology is with low cost, energy consumption is little and simple to operate, is suitable for
Industrialized production.
It is still another object of the present invention to provide the powder of a kind of compound functionalization infrared external reflection
Coating application in engineering machinery.
The present invention provides the powdery paints of a kind of compound functionalization infrared external reflection, including following weight
The component of amount part: polyester/acrylic resin complex 2-8 part, polyester resin 30-50 part, ring
Oxygen acrylic resin modified 10-20 part, infrared reflecting paint 15-35 part, cross-linking agent 1-5 part,
Filler 8-18 part, auxiliary agent 1-2.5 part.Wherein polyester/acrylic resin complex is polyester tree
Fat and the polymer complex of reactive acrylic resin, owing to being combined containing this polymer
Thing, Gloss Retention and the anti-fouling performance of final powdery paints are improved.
During preparation polyester/acrylic resin complex, polyester resin and acrylic resin raw material
Mass ratio is 6-8 part: 2-4 part, preferably 7 parts: 3 parts, at height after the two mix homogeneously
Temperature reaction kettle for reaction 1-1.5 hour, reaction temperature is 140-160 DEG C, preferably 150 DEG C.
In raw material, polyester resin can be any binary or polyprotic acid and any binary or polyhydric alcohol
Product after polycondensation reaction, it is also possible to for the polyester resin product of general commercial, such as, open
9855 polyester resin etc. of family harbor city Bao Tian new material Science and Technology Ltd. supply.
Preferably, in raw material, polyester resin is for having high hydroxyl value, has acceptable glass simultaneously
The hydroxy polyester resin of glass transition temperature, its material component and mass parts be: aromatic dibasic acid
45-35 part, branching agent 40-50 part, dihydroxylic alcohols 0-10 part, esterification catalyst 0-0.01 part；
Described aromatic dibasic acid selected from p-phthalic acid, see in phthalic acid one or both；Described
One or both in neopentyl glycol, the ethylene glycol of dihydroxylic alcohols；Described branching agent is selected from
One or more in trimethylolpropane, trimethylolethane, tetramethylolmethane；Described ester
Change catalyst is selected from one or both in single top stannum oxide, Dibutyltin oxide.Above-mentioned poly-
Ester resin uses the method synthesis of melt polycondensation, comprises the steps: first, in proportion by two
Unit's alcohol and branching agent put into reactor, are heated to material melts；Then, while stirring by than
Example adds aromatic dibasic acid and esterification catalyst, is to slowly warm up to 230-240 DEG C and maintains to acid number
For 15-25mgKOH/g, then it is cooled to 195-205 DEG C and continues to target acid number
0.8-1.2mgKOH/g and hydroxyl value 280-300mgKOH/g, i.e. obtain polyester resin.This polyester
The glass transition temperature Tg of resin is 50-60 DEG C, and melt viscosity is 500-3000Pa S,
Softening point 103-108 DEG C.
Described epoxy modified acrylic resin can be arbitrary epoxy modified acrylic resin, ring
The kind of epoxy resins modifying agent is also without specific restriction, and the monomer of acrylic resin can be conventional
(methyl) esters of acrylic acid, (methyl) acrylic acid and other modified monomers such as styrene,
Acrylamide etc..
Preferably, described modified epoxy acrylate resin with methyl methacrylate, acrylic acid,
1-Octyl acrylate, styrene, Hydroxypropyl acrylate, trimethyol propane triacrylate are single
Body, benzoyl peroxide is initiator, and bisphenol A type epoxy resin is modifying agent, aggregated
The thermoset epoxy obtained is acrylic resin modified, and its epoxide number is 0.4-0.47eq/100g, soft
Changing point and be 12-20 DEG C, viscosity is 6000-10000mPa S.This Resin Flow is good, easily with
Auxiliary material mixing, processing and forming is convenient, good stability of the dimension after solidification, and shrinkage factor is less than 2%,
Being the resin of thermosetting resin shrinkage factor minimum, thermal coefficient of expansion 6-10.5%, adhesive property is excellent
Different, mechanical performance and chemical stability are the best.
Reflectance >=90% of described infrared reflecting paint, a diameter of 20-50nm.Can select
With rutile type nano titanic oxide or the rutile titanium dioxide bag with spinel structure
Cover Muscovitum.
Introduce nano titanium oxide, infrared ray can not only be reflected, and it also has the highest
Chemical stability, heat stability, avirulence, Superhydrophilic, non-migratory.
The described rutile titanium dioxide cladding Muscovitum with spinel structure, is with thin,tough silk cloud
Female for substrate, Sn4+As accelerator, TiCl4For titanium source, use liquid phase deposition at sericite
Surface coating rutile titanium dioxide prepares.Rutile titanium dioxide obtained above
It is a kind of Titania-mica Composites, not only there is nano titanium oxide and the two of nanometer sericite in powder
Weight advantage, such as chemical stability, weatherability, light reflective, light resistance and thermostability is excellent
Good, and strengthened on photochemical properties.
Described cross-linking agent can be common cross-linking agent, such as, have multi-functional material,
Such as multicyanate esters, trimethylolpropane, tetramethylolmethane etc..
Preferably, described cross-linking agent is with 4,5-imidazole-2-carboxylic acid and benzimidazole-5,6-dicarboxylic acids
As sensitization organic ligand, by being covalently bound to mesoporous SiO2On nanoparticle, it is prepared into
The nano combined cross-linking agent arrived.This multifunctional nano multiple crosslinking agent favorable dispersibility, the most surely
Fixed.Therefore there is faster coating and cross-linking agent response speed, it is possible to accelerate curing rate, joint
Save hardening time.
Described filler can be silica flour, calcium carbonate, Pulvis Talci, Kaolin, magnesium hydroxide,
Aluminium hydroxide, nano material filler such as nano barium sulfate etc., it is preferred that for nano modification sulphuric acid
Barium.
Described auxiliary agent selected from levelling agent, Benzoinum, wetting enhancer, low-temperature setting accelerator,
One or more of UV absorbent.When deployed, the quality of levelling agent is that coating is total
The 0.8～1.0% of quality；Benzoic quality is the 0.2～1.0% of coating gross mass；Moistening
The quality of accelerator agent is the 0.4～1.0% of coating gross mass；The quality of low-temperature setting accelerator
For coating gross mass 0.2～1.0%；The quality of UV absorbent is coating gross mass
1.0～1.5%.
Owing to the powdery paints of the present invention containing polyester/acrylic acid complex, polyester resin and ring
Oxygen is acrylic resin modified, and it has the salt tolerant resistance to mist corrosive nature of epoxide powder coating, has again
There is the ageing-resistant performance that acrylic acid powder coatings is excellent.
Additionally, ginkgo seeds is essentially due to degraded and the polymerization work of macromolecule resin (base material)
With caused.So in two kinds of effects of degraded and polymerization, Degradation can be recognized the most again
For being the principal character of all organic binder matter ageing processes.The degraded of macromolecular compound is made
With, caused by various physically or chemically factors.The fall occurred under physical factor effect
Solution is substantially by the degraded that causes of effect of heat and the photochemical degradating that causes because of the effect of light.Too
Sunlight arrives in the radiation components on ground after atmospheric absorption, and ultraviolet accounts for 5%, can
Seeing that light accounts for 45%, infrared ray accounts for 45%, and other electromagnetic radiation energy accounts for 5%.Its intermediate infrared radiation
It is in the range of 720-2500nm that the 95% of energy concentrates on wavelength, i.e. near infrared range.
Visible ray and infrared ray are all heat rays, and what the object being sunlighted absorbed solar radiation can
See that light becomes heat energy with the energy conversion of infrared light.Therefore in coating system, add infrared external reflection face
Material is to reflect away the part light causing ginkgo seeds variable color loss of gloss in sunlight to greatest extent
Ripple, to improve the corrosion-resistant and weatherability (aging) of film further.
The present invention also provides for the production work of the powdery paints of above-mentioned compound functionalization infrared external reflection
Skill, uses supercritical carbon dioxide fluid method.
Concrete production technology comprises the steps: a, by all raw materials in formulation weight ratio dispensing,
And carry out premixing；B: the material got togather by premix is passed through in Co 2 supercritical fluid still,
Pressure and temperature in regulation still so that the pressure and temperature of carbon dioxide reaches critical point, then adjusts
Joint temperature to 100-120 DEG C；C: the material in dispersed with stirring supercritical fluid still so that premix
Close the resin in material and reach fusion plastification extrusion effect；D: high-pressure carbon dioxide fluid is carried out
Blood pressure lowering, to less than time below carbon dioxide critical pressure, to feed separation, spray, pulverize,
Cross sieve classification.
Preferably, premixing is carried out in premixing agitator tank, uses pressure-control valve and temperature
Control device the pressure and temperature in supercritical fluid still is controlled, and be provided with in fluid still
Dispersion mixing plant, the step of separation of material is carried out in separating still.
At a temperature of setting, the abundant fusion plastification of resin, then with stream of supercritical carbon dioxide
Body carries out shear-mixed, and supercritical carbon dioxide is diffused rapidly to the polymeric matrix of fusion plastification
In, the viscosity of polymeric system reduces, and free volume increases, and makes multiphase polymer and nanoparticle
Son is sufficiently mixed, and stops heating, opens after pressure relief valve is depressured to normal pressure, supercritical dioxy
Change carbon foaming nucleation, be internally formed a large amount of abscess at polymeric matrix, abscess forming process is entered
The one heterogeneous body of step homogenising polymer and the mixing of nanoparticle, continues to be passed through supercritical carbon dioxide
The polymer making fusion plastification is cooled to glass transition temperature, then turns being cooled to vitrification
Temperature be sufficiently mixed after Polymer Blends body and nanoparticle be passed through in classification still and spray
Mist, granulating, classified filtering are the powder body of particle diameter 80-100um.
Preferably, in premixing step, mixing speed is 300-400 rev/min；Supercritical fluid
In still during stirring, speed is 100-150 rev/min；The pressure of supercritical carbon dioxide is
7.38-10MPa；In supercritical fluid still, temperature is 100-120 DEG C.
The key point of this production technology is to control carbon dioxide in Co 2 supercritical fluid still
Pressure and temperature.Co 2 supercritical fluid method be utilize carbon dioxide at 7.38MPa and
Having reached critical point and liquefied when 31.1 DEG C, the physical property of carbon dioxide at this moment has liquid property concurrently
With gas property.It is substantially still a kind of gaseous state, but is different from general gas flow, is a kind of
Dense gaseous state.Its density is big two orders of magnitude than general gas flow, close with liquid.It
Ratio of viscosities liquid is little, but diffusion velocity faster than liquid (about 10-100 times), so there being preferably stream
Dynamic property and transmission performance.Its dielectric constant drastically changes with pressure, as dielectric constant increases
Be conducive to dissolving the material that some polarity are big, Co 2 supercritical fluid just like gas almost without
Surface tension, is therefore easily penetrated into various paint fillers in porous tissue, reaches thorough
The effect of dispersion mixing.Simultaneously because the critical temperature of carbon dioxide is close to room temperature, separating or
Can separate with other material easily by decompression after reaction, residual will not be produced and cause ring
Protect and problem for security.
The advantage of this technique is to reduce by one extrusion mixing operation, not only reduces heat fusing and is disappeared
The electric energy of consumption, also improves production efficiency simultaneously；Reducing production and processing temperature, traditional is molten
Melt temperature and commonly reach 180-200 DEG C, thus considerably reduce energy consumption, reduce product
Production cost, avoids the coking phenomenon that powdery paints is likely to occur in the fabrication process simultaneously, can
To significantly improve the quality of product；Because decreasing heat fusing operation, the product so produced
Product can film-forming at a lower temperature, subtract from conventional curing temperature 180-200 DEG C/30 minute
Low to 100-120 DEG C/20-30 minute, reduce baking temperature 44.5%, reduce baking time
33.4%, reduce Energy Consumption of Construction, save the energy, improve throughput rate.
Finally, the powdery paints of above-mentioned compound functionalization infrared external reflection prepared by the present invention is permissible
In engineering machinery.
Beneficial effects of the present invention has:
1, the powdery paints of the compound functionalization infrared external reflection of the present invention, i.e. has epoxy powder
End coating salt spray corrosion resistance, have again acrylic acid powder coatings excellent ageing-resistant (i.e.
The Gloss Retention of paint film and unfading), it is possible to for engineering machinery field.
2, this coating system adds infrared reflecting paint simultaneously (anti-to reflect away to greatest extent
Penetrate rate >=90%) sunlight causes the part light wave of ginkgo seeds variable color loss of gloss, to ensure
Guarantor's light colour retention of film so that the weather resistance of this invention coating brings up to artificial accelerated aging
Within (xenon arc lamp of filtration) 1500h gloss loss 40%, within optimum can reach 15%, become
Color is within △ E3.0.
3, the powdery paints combining up-to-date Co 2 supercritical fluid method production can be relatively
Film-forming under low temperature, reduces to 100 DEG C from conventional curing temperature 180-200 DEG C/30 minute
/ 30 minutes or 120 DEG C/20 minutes, reduce baking temperature 44.5%, reduce baking time 33.4%,
Reduce Energy Consumption of Construction, save the energy, improve throughput rate.
Detailed description of the invention
Specific embodiment and comparing embodiment by invention now given below can be further
It is well understood to the present invention, but they are not limitation of the invention.Specific embodiment and comparing
In embodiment, the part of not narration in detail is to use prior art, known technology means and industry
Standard obtains.
Except as otherwise noted, the raw material number employed in the present invention is parts by weight.
Method of testing or instrument:
Gloss: Guangzhou mark brother reaches the intelligent triangular degree glossometer of Laboratory Instruments articles for use company limited
BGD516 carries out precision measurement.
Reflectance: the F10-RT-UVX reflectance test instrument of U.S. Filmetrics, Inc. company
Carry out precision measurement.
Humidity resistance: Taiwan crowd's will CZ-A-150D can arrange temperature by journey examination constant temperature and moisture test machine
Degree humidity also sets testing time 1000h wet-heat resisting test condition and tests.
Salt fog resistance: Hangzhou Zheng Ya Instrument Ltd. JL-120A continuous way salt spraytest
Machine (corrosion resistance test machine) degree of setting humidity also sets testing time 1000h wet-heat resisting test strip
Part is tested.
Artificial weathering ageing resistance: the Q-SUN-XE-3 type light that Q=LAB company of the U.S. produces is steady
Qualitative test case arranges light wave at 340nm, irradiance 0.51W/m2, illumination temperature 63 DEG C is wet
Degree carries out seriality artificial weathering ageing resistance 80% and tests 1500h, after mark brother with Guangzhou
The intelligent triangular degree glossometer BGD516 reaching Laboratory Instruments articles for use company limited carries out gloss
Degree change test, then carry out color change with U.S. Ai Seli hand-held spectrophotometer CI64
The test of (aberration).
Embodiment 1
Preparation polyester/acrylic resin complex 1: by polyester resin and acrylic resin by weight
Mixing than 7:3, at 150 DEG C, in pyroreaction still, reaction forms for 1 hour.
Prepare epoxy modified acrylic resin: with methyl methacrylate, acrylic acid, acrylic acid
Monooctyl ester, styrene, Hydroxypropyl acrylate, trimethyol propane triacrylate are monomer, mistake
BP is initiator, and E-44 epoxy resin is modifying agent, is polymerized.
Prepare nano combined cross-linking agent: with 4,5-imidazole-2-carboxylic acid and benzimidazole-5,6-dicarboxylic acids
As sensitization organic ligand, by being grafted onto mesoporous SiO after covalent bond2On nanoparticle, preparation
Go out nanometer multiple crosslinking agent.
Infrared reflecting paint is rutile type nano titanic oxide, and polyester resin is precious field novel-section
9855 polyester resin of material supply.
Each material component of powdery paints is as shown in table 1, is mass fraction.
Production method and technique comprise the following steps:
Each raw material dispensing as shown in table 1 is put into raw material tank and carries out premixing, then premix
The raw material got togather is passed in Co 2 supercritical fluid still, and design temperature is 100 DEG C,
After utilizing the heating element heater in Co 2 supercritical fluid still to carry out the temperature being heated to setting
Constant temperature 3 minutes, starts shearing elements simultaneously and carry out shearing to forward velocity of rotation to be 100 revs/min,
Make the abundant fusion plastification of resin, then pass to the supercritical titanium dioxide that pressure is 7.38MPa
Carbon, through the shear-mixed of 5 minutes, supercritical carbon dioxide was diffused rapidly to fusion plastification
In polymeric matrix, the viscosity of polymeric system reduces, and free volume increases, and makes heterogeneous polymerization
Thing is sufficiently mixed with nanoparticle, stops heating, and shearing elements stops forwarding to open pressure release
Valve is depressured to normal pressure, supercritical carbon dioxide foaming nucleation, is internally formed greatly at polymeric matrix
Amount abscess, in abscess forming process, the further heterogeneous body of homogenising polymer and nanoparticle mixes
Close, continue to be passed through supercritical carbon dioxide and make the polymer of fusion plastification be cooled to vitrification to turn
Temperature, being cooled to the Polymer Blends body after glass transition temperature is sufficiently mixed and receiving
Rice corpuscles is passed through in classification still and carries out the powder body that granulating classified filtering is particle diameter 80um of spraying, and takes
Sample detect, detect qualified after pack further according to customer requirement, be finally reached we need
Compound functionalization infrared external reflection engineering machinery powdery paints.
Embodiment 2
This embodiment is substantially the same manner as Example 1, and its difference is:
During preparation polyester/acrylic resin complex 2, react 1.5 hours.
The method using CN103467714A prepares high hydroxy polyester resin.
The method using CN102795663A prepares Nano titanium dioxide cladding mica powder.
Cross-linking agent is trimethylolpropane.
It addition, auxiliary agent has required difference, it is shown in Table 1 in detail.
Embodiment 3
This embodiment is substantially the same manner as Example 1, and difference is that auxiliary agent is different, supercritical
The temperature of fluid still is set as 120 DEG C, is heated to constant temperature 5 minutes after the temperature set, and shears
The velocity of rotation of element is 150 revs/min, and the shear-mixed time is 10 minutes.
Embodiment 4
This embodiment is substantially the same manner as Example 2, and difference is that auxiliary agent is different, cross-linking agent
For nano combined cross-linking agent, its preparation method is with embodiment 1；Additionally, supercritical fluid still
Temperature is set as 110 DEG C, is heated to constant temperature 4 minutes after the temperature set, turning of shearing elements
Dynamic speed is 150 revs/min, and the shear-mixed time is 8 minutes, and the pressure of supercritical fluid is
10MPa。
Embodiment 5
This embodiment is identical with embodiment 1 production technology, is only that raw material is different, such as table 1 institute
Show.
Embodiment 6
This embodiment is identical with embodiment 1 production technology, is only that raw material is different, such as table 1 institute
Show.
Comparative example 1
This comparative example is substantially the same manner as Example 1, is only that and does not contains polyester/acrylic resin
Complex 1.
Table 1
Powdery paints in each embodiment and comparative example is constructed: sandblasting defat cold water
Clean rust cleaning cold water wash surface adjustment phosphatization hot water cleaning, drying to dust
Solidification.Dust employing JF500 type electrostatic powder coating machine, and HGP series reclaims for powder one
Change powder spraying chamber.Control input current is AC200V ± 10%, 50Hz, ＜ 140W；Input
Air-flow 0.5MPa, 0.3m3/ min purified process；Output voltage 60～80kV；Defeated
Go out electric current 50 μ A constant current output；Powder outlet quantity 400g/min；Primary powder spraying ratio 70%；Spraying
Circular diameter >=400mm；Encircle effect >=70mm；Coating layer thickness 200 μm.Solidification temperature control
System was at 100 DEG C/30 minutes or 120 DEG C/20 minutes.Testing result is as shown in table 2 below:
Table 2
Above disclosed only the preferred embodiments of the present invention, can not limit with this certainly
Determine the interest field of the present invention, the equivalent variations therefore made according to scope of the present invention patent,
Still belong to the scope that the present invention is contained.
Claims (10)
1. a compound functionalization infrared external reflection powdery paints, including the component of following weight portion:
Polyester/acrylic resin complex 2-8 part, polyester resin 30-50 part, epoxide modified
Acrylic resin 10-20 part, infrared reflecting paint 15-35 part, cross-linking agent 1-5 part,
Filler 8-18 part, auxiliary agent 1-2.5 part；Wherein polyester/acrylic resin complex is poly-
Ester resin and the polymer complex of reactive acrylic resin, described epoxide modified
Acrylic resin with methyl methacrylate, acrylic acid, 1-Octyl acrylate, styrene,
Hydroxypropyl acrylate, trimethyol propane triacrylate are monomer, benzoyl peroxide first
Acyl is initiator, and bisphenol A type epoxy resin is modifying agent, the aggregated thermosetting obtained
Property epoxy modified acrylic resin.
Compound functionalization infrared external reflection powdery paints the most according to claim 1, it is special
Levy and be: the raw material components of described polyester resin and mass parts be: aromatic dibasic acid
45-35 part, branching agent 40-50 part, dihydroxylic alcohols 0-10 part, esterification catalyst 0-0.01
Part；The hydroxyl value of polyester resin is 280-300mgKOH/g.
Compound functionalization infrared external reflection powdery paints the most according to claim 1 and 2,
It is characterized in that: described infrared reflecting paint is rutile type nano titanic oxide or tool
There are the rutile titanium dioxide cladding Muscovitum of spinel structure, described infrared external reflection face
Reflectance >=90% of material, a diameter of 20-50nm.
Compound functionalization infrared external reflection powdery paints the most according to claim 1 and 2,
It is characterized in that: described cross-linking agent is for 4,5-imidazole-2-carboxylic acid and benzimidazole-5,6-
Dicarboxylic acids is as sensitization organic ligand, by being covalently bound to mesoporous SiO2Nanoparticle
On son, the nano combined cross-linking agent prepared.
Compound functionalization infrared external reflection powdery paints the most according to claim 1 and 2,
It is characterized in that: described filler selected from silica flour, calcium carbonate, Pulvis Talci, Kaolin,
One or more in magnesium hydroxide, aluminium hydroxide, nano modification barium sulfate.
Compound functionalization infrared external reflection powdery paints the most according to claim 1 and 2,
It is characterized in that: described auxiliary agent is selected from levelling agent, Benzoinum, wetting enhancer, low
Temperature curing accelerator, UV absorbent in one or more.
7. compound functionalization infrared external reflection powdery paints described in an any one of claim 1-6
Production technology, it is characterised in that: use Co 2 supercritical fluid method.
The production work of the most compound functionalization infrared external reflection powdery paints
Skill, it is characterised in that: comprise the steps: a, by all raw materials by formulation weight ratio
Example dispensing, and carry out premixing；B: the material got togather by premix is passed through that carbon dioxide is super to be faced
In boundary's fluid still, pressure and temperature in regulation still so that the pressure of carbon dioxide and temperature
Degree reaches critical point；C: the material in dispersed with stirring supercritical fluid still so that premix
Close the resin melting plasticizing in material；D: high-pressure carbon dioxide fluid is carried out blood pressure lowering, arrives
Less than time below carbon dioxide critical pressure, to feed separation, spray, pulverize, mistake
Sieve classification.
The production work of the most compound functionalization infrared external reflection powdery paints
Skill, it is characterised in that: in premixing step, mixing speed is 300-400 rev/min；
In supercritical fluid still during stirring, speed is 100-150 rev/min；Supercritical titanium dioxide
The pressure of carbon is 7.38-10MPa；In supercritical fluid still, temperature is 100-120 DEG C.
10. compound functionalization infrared external reflection powdery paints described in an any one of claim 1-6
Application in engineering machinery.
Priority Applications (1)
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| CN105153896A (en) * | 2015-09-14 | 2015-12-16 | 安徽华润涂料有限公司 | Home security window prime paint and preparation method thereof |
| CN105218960A (en) * | 2015-10-21 | 2016-01-06 | 南京润屹电子科技有限公司 | For the high-performance weather-proof material and preparation method thereof of instrument |
| CN106867370A (en) * | 2017-02-28 | 2017-06-20 | 佛山市涂亿装饰材料科技有限公司 | A kind of architectural shape anti-heat radiation energy-conservation powder coating product and its processing technology |
| CN106893461B (en) * | 2017-04-14 | 2019-10-01 | 山东麦都孚新材料科技有限公司 | Compound powdery paints of pearl powder and preparation method thereof |
| CN107384072B (en) * | 2017-07-21 | 2019-10-18 | 南京理工大学 | Infrared-reflection heat-insulation coating and preparation method thereof based on bismuth molybdate compound |
| CN108676414A (en) * | 2018-06-04 | 2018-10-19 | 合肥月煌新型装饰材料有限公司 | A kind of aqueous reflective heat-insulation paint and preparation method thereof |
| CN109294380B (en) * | 2018-09-26 | 2020-12-18 | 河北麦森钛白粉有限公司 | Anti-infrared nano titanium dioxide powder coating and preparation method thereof |
| CN110673442B (en) * | 2019-11-11 | 2023-04-11 | 新东方油墨有限公司 | Photosensitive resin and application thereof in preparation of liquid photosensitive solder resist ink |
| CN112646440A (en) * | 2020-12-21 | 2021-04-13 | 成都祥和新代涂料集团有限公司 | Preparation method of antirust single-component organic silicon modified primer |
| CN113621264A (en) * | 2021-06-23 | 2021-11-09 | 天津西敦粉漆科技有限公司 | Method for preparing low-temperature curing powder coating in post-mixing mode, related composite nano low-temperature curing catalyst and preparation method thereof |
| CN113930095A (en) * | 2021-11-30 | 2022-01-14 | 扬州彩虹粉末涂料有限公司 | Environment-friendly high-reflectivity powder coating and preparation process thereof |
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