CN103131306A - Powder coating with effect of color changing along with angle and preparation method thereof - Google Patents
Powder coating with effect of color changing along with angle and preparation method thereof Download PDFInfo
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- CN103131306A CN103131306A CN2013101087258A CN201310108725A CN103131306A CN 103131306 A CN103131306 A CN 103131306A CN 2013101087258 A CN2013101087258 A CN 2013101087258A CN 201310108725 A CN201310108725 A CN 201310108725A CN 103131306 A CN103131306 A CN 103131306A
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- Application Of Or Painting With Fluid Materials (AREA)
Abstract
The invention belongs to the field of powder coating and particularly relates to power coating with an effect of color changing along with an angle. The powder coating with the effect of color changing along with the angle comprises epoxy resin, an epoxy resin particle system corresponding to a matched curing agent A and color changing pigments and a fluorocarbon resin particle system with fluorocarbon resin and a matched curing agent B. The parts by weight ratio of the epoxy resin particle system and the fluorocarbon resin particle system is 7-3:3-7. According to the powder coating, the color changing pigments are adhered in an epoxy resin layer successfully through bonding technology. In the process of curing, the color changing pigments are sunk into the coating bottom instead of floating to the surface of the coating along with the epoxy resin. A transparent fluorocarbon resin layer floating to the upper layer has the function of protecting the color changing pigments so that the color changing pigments are antioxidative. A structure of the color changing pigments is not damaged in the whole process and the color changing effect is thoroughly played.
Description
Technical field
The invention belongs to art of powder coatings, be specifically related to a kind of powder coating of having heterochromatic effect with visual angle and preparation method thereof that has.
Background technology
Pigment changeable colors along with angle refers under irradiate light, along with the variation of viewing angle, and the pigment that color and gloss change thereupon, perhaps viewing angle is constant and along with the irradiating angle that changes light source, the pigment that its color also changes thereupon.This pigment is the requirement according to film structure, utilize interference or diffraction effect between reflected light to design, reflect in the multi-layer film structure of pigment under radiation of visible light, interference and absorbing phenomenon, the surface color that makes pigment changes with the variation at visual angle.The discoloration effect of this pigment changeable colors along with angle and the interference color of substrate material have much relations, namely can produce different changeable colors along with angle effects if the absorption look on substrate material surface is different from interference color.Comparatively desirable pigment changeable colors along with angle is all 5 layers of symmetrical structure, and middle one deck is opaque reflecting layer, and both sides are symmetrical clear, colorless medium layer and semi-transparent metal layer.Because it has fabulous visual effect, thereby in decoration and field of coating, fabulous application prospect is arranged also.
Yet find in practical study, existing powder coating is painted many problems can occur if give with pigment changeable colors along with angle.Owing to generally all adopting polishing in the preparation process of powder coating, make the destructurized of most of pigment changeable colors, not only cause luster effect to descend, probably can cause losing the effect of changeable colors along with angle.Therefore can't effect pigment be sneaked in the raw material of preparation used for powder coating according to the mode identical with other pigment at present, and then extrude this mixture of rear grinding.Destroyed in grinding in order to prevent pigment changeable colors along with angle, can again it be dry mixed after grinding powder paint into wherein, but find in practice, can find the defective that pigment is assembled or lacked like this on decorated thing surface, the reason of this phenomenon is the behavior that electrifies of powder coating particle and the difference of pigment changeable colors along with angle particle in being dry mixed process, due to causing coating to produce when spraying separating.And when pigment changeable colors along with angle content is high, also can produce the problem that pigment is heaped, told powder and stops up muzzle, bring a lot of difficulties to practical application.
Summary of the invention
For this reason, technical problem to be solved by this invention is that pigment changeable colors along with angle in prior art is difficult to be applied to the problem in powder coating, and then a kind of powder coating that has with the heterochromatic effect of angle is provided;
The present invention also provides and has prepared the above-mentioned method that has with the powder coating of the heterochromatic effect of angle;
The present invention also provides a kind of powder coating coating that has with the heterochromatic effect of angle.
For solving the problems of the technologies described above, the invention provides a kind of metal powder coating that has with the heterochromatic effect of angle, comprise the epoxy particles system that contains epoxy resin, corresponding adaptive solidifying agent A and pigment changeable colors and contain fluorocarbon resin and the fluorocarbon resin granular system of adaptive solidifying agent B;
The ratio of weight and number of described epoxy particles system and described fluorocarbon resin granular system is 7-3:3-7;
Described epoxy particles system is comprised of the component of following weight part:
Described fluorocarbon resin granular system is comprised of the component of following weight part:
Preferably, described epoxy particles system is comprised of the component of following weight part:
Described fluorocarbon resin granular system is comprised of the component of following weight part:
Preferably, the ratio of weight and number of described epoxy particles system and described fluorocarbon resin granular system is 6-4:4-6.
More excellent, the ratio of weight and number of described epoxy particles system and described fluorocarbon resin granular system is 1:1.
Due to specification and the equivalent value of the epoxy resin such as epoxy resin in prior art and be not quite similar, therefore, adopt the mode of stop collar epoxy resins and adaptive solidifying agent total amount to limit herein, those skilled in the art can calculate selection according to the basic proportioning ratio for epoxy resin and solidifying agent in prior art, as long as make the cooperation of epoxy resin and solidifying agent reach to solidify purpose, generally be advisable take epoxy resin and solidifying agent ratio as 90-95:5-10.
Described epoxy resin is bisphenol A type epoxy resin (NPES-903, E-12) and/or novolac epoxy (KUKDO YDPN series).Adaptive solidifying agent A is Dyhard RU 100 (DYHARD
), replace the Dyhard RU 100 CASAMID710 of company (the THOMAS SWAN), hydrazides (ADH), phenolic hydroxyl group resin (KUKDO KD-420) or terminal carboxyl polyester (
The mixture of one or more P5980) need not to add any auxiliary agent that improves coating result again.
Described fluorocarbon resin is FEVE resin or trifluorochloroethylene-alkyl vinyl ether copolymerized fluorocarbon resin, mainly containing New Zealand Orica powder coating company, Daikin company and Japan AGC company abroad produces, domestic is mainly the Dalian E-CTFE of nation that shakes, preferred Japan AGC Lumiflon710, described solidifying agent B is conventional isocyanates solidifying agent such as Degussa VESTAGON B 1530, Bayer
NW-5.Generally be advisable with fluorocarbon resin and solidifying agent ratio 80:20.
Described pigment changeable colors comprises pigments, mica, the SiO through applying that scribbles ferric oxide and/or titanium dioxide
2Sheet, the metal oxide sheet that applies one or many, pearl white sheet, aluminium flake, LCP pigment flakes, the sheet glass through applying and/or one or more the mixture in multi-layer pigments.The median size of preferred described pigment changeable colors is 5-200 μ m.
Described color stuffing comprises pigment and filler, can select to add according to color stuffing common in this area, further, described filler comprise barium sulfate such as W-44HB, aluminium hydroxide as
Nepheline syenite such as minex-10 etc., pigment comprise titanium dioxide CR826, Carbon Black 330 R, iron oxide red
Yellow pigment such as Permanent Yellow DHG, phthalocyanine such as GNM, blue pigment is as the coloring materials such as 10446, for bottom without particular requirement, but select the weathering resistance color stuffing for fluorocarbon layer as far as possible.
Described auxiliary agent A comprise edge coverage power properties-correcting agent (
), curing catalyst (BASF 2-MI), wetting dispersing agent (
), one or more the mixture in flow promotor (aerosil or aluminum oxide C), any auxiliary agent that improves the coatingsurface effect can not add.
The preferred acrylic acid or the like of described flow agent such as GLP588, PV88, P67, P200 etc.; Described air release agent is st-yrax or micro mist wax.
Described auxiliary agent B comprises one or more the mixture in brightening agent, flow improver additive, wax, antioxidant, photostabilizer or UV absorption agent.
Preferred 701 auxiliary agents of described brightening agent; Described flow improver additive is aerosil or aluminum oxide C, wax preferably polyethylene wax, Poly Propylene Wax, tetrafluoroethylene wax, polyamide wax etc.; The preferred Hinered phenols of described antioxidant such as KY-1010; Described photostabilizer and described UV absorption agent are preferred
Or
The addition of above-mentioned each component, those skilled in the art can require according to the addition of each commercial components in prior art and the processability of metallic paint requires to determine.
The invention also discloses a kind of above-mentioned method that has with the metal powder coating of the heterochromatic effect of angle for preparing, comprise the steps:
(1) get after described epoxy resin and adaptive solidifying agent A, color stuffing and auxiliary agent A mix and be uniformly dispersed according to selected parts by weight, by forcing machine extrude, compressing tablet, cooling rear pulverizing, powder sieving for standby;
(2) get the powder that obtains in step (1) and described pigment changeable colors and decide the technique transformation that bonds by nation, cooling sieving obtains required epoxy particles system, and be standby;
After each component of (3) getting described fluorocarbon resin and adaptive solidifying agent B, flow agent, air release agent and auxiliary agent B granular system according to selected parts by weight is mixed and is uniformly dispersed, by forcing machine extrude, compressing tablet, cooling rear pulverizing, powder sieves and obtains required fluorocarbon resin granular system, and is standby;
(4) get respectively according to selected ratio of weight and number the described carbon resin granular system of fluorine that obtains in the described epoxy particles system that obtains in step (2) and step (3) and be dry mixed evenly, and get final product.
In described step (1) and described step (3), the temperature of described extrusion step is 80-150 ℃.
In described step (1) and described step (3), the powder particle diameter of described pulverising step is 30-50 μ m.
The nation that nation in described step (2) decides process selection Xiamen three and safe Science and Technology Ltd. decides machine SHT500/1000 and operates, and its operational condition those skilled in the art can carry out nation according to the processing parameter such as service temperature, rotating speed, time that the character such as glass temperature of material reasonably select nation to decide technique and surely transform.
The invention also discloses and a kind ofly have a powder coating with the heterochromatic effect of angle according to what aforesaid method prepared.
The invention also discloses a kind of powder coating that has with the heterochromatic effect of angle, the above-mentioned powder coating that has with the heterochromatic effect of angle sprayed and solidify and obtain.
Described solidification value is 180-250 ℃.
Epoxy powder coating is that to use in powder coating be also at most most widely used a kind of, this is mainly because epoxy resin has wettability preferably, can adhere to most ground bonding, but its a most important shortcoming is exactly that the paint film structure can be destroyed under ultraviolet effect, can lose very soon antiseptic property, therefore can not use out of doors, and simple outdoor powder coating systems can not play the rot-resistant effect and have adhesive property preferably.
Fluorocarbon resin be on the fluoro-resin basis through modification, a kind of new coating material of processing, its principal feature is to contain a large amount of F-C keys in resin, its bond energy is 116kal/mol, can be rated as first in all chemical bonds.Even if be heated, under the effect of light (comprising ultraviolet ray), the F-C key is difficult to fracture, so fluorocarbon resin demonstrates superpower weathering resistance and resistant to chemical media corrosion, so its stability is best in all cold coating materials.And fluorocarbon resin is as a kind of high-tech functional coating material and a kind of brand-new surface decoration protective material, many performances such as it is weather-proof, resistance to chemical attack are better than at present popular on the market urethane, organosilicon, acrylic resin paint material, especially in the environment of heavily contaminated, deep-etching, more shown the barrier propterty that it is superior.
But in view of fluorocarbon resin with treat that the bonding wettability of coating ground is unsatisfactory, therefore, developed in prior art and united the powder coating that uses epoxy resin and fluorocarbon resin, learn from other's strong points to offset one's weaknesses in conjunction with advantage both expecting.But, in practical study also as can be known, adopting the method for preparing powder coating commonly used in prior art is that technique that pulverizing is extruded in direct mixing again is when being prepared, that bottom or surface layer all are dispersed with epoxy resin and fluorocarbon resin in coating, and the epoxy resin that is in the top layer also still is subject to ultraviolet impact and can't uses out of doors, also sacrificed simultaneously the weather resistance of fluorocarbon resin, therefore in this scheme, mentioned coating is mainly used in the use that also can only be applied to pipeline corrosion protection, still is not suitable for the use of outdoor building.
Technique scheme of the present invention has the following advantages compared to existing technology:
1, powder coating of the present invention is owing to having introduced epoxy resin and fluorocarbon resin in system, and make epoxy resin and the in type state of fluorocarbon resin be dry mixed by the technique that extrusion molding is respectively pulverized again, the surface level that takes full advantage of epoxy resin and fluorocarbon resin differs greatly and the uncompatibility that causes, forms significantly to be separated in the process of coating curing, because the fluorocarbon resin surface can lowlyer be easy to floating to the coating top layer, form transparent protective membrane supercoat, and have the performances such as corrosion-resistant, acid and alkali-resistance and UV resistant because the superpower weather resistance of fluorocarbon resin guarantees coating, make described coating can be used for the especially use of the decoration under mal-condition of exterior decoration, and the epoxy resin such as while epoxy resin can be sink to the coating bottom due to larger surface and bond preferably by its good wetting and adhesion property and ground to be sprayed, have also played the effect of protection base material, the described powder coating that has with the heterochromatic effect of angle of while, utilize nation to decide technique success pigment changeable colors is bonded in epoxy resin layer, pleasantly surprised discovery pigment changeable colors is done the directional profile of rule along two coating interfaces in the process of solidifying, pigment changeable colors will be sink to the coating bottom and can be floating to the coating top layer with epoxy resin in the process of solidifying like this, and floating to the transparent fluorocarbon resin layer on upper strata, having played the protection pigment changeable colors can not be exposed to and make its sludge proof effect in air, whole process is not destroyed the structure of pigment changeable colors, give full play to its heterochromatic effect, so this coating machine excellent property, also have the superpower adverse weather conditions such as anticorrosion and superpower UV resistant, coating can satisfy the weather-proof highest level GB5237.5 of powder coating building materials, AAMA2605-05 and QUALICOAT class3, also i.e. life-span of outdoor at least 20 years, chemical resistance of coating, acid-proof alkaline also significantly promote,
2, powder coating of the present invention comprises the weight part ratio of each component of resin, solidifying agent and color stuffing and auxiliary agent by reasonable setting, organic cooperation by each component optimum, make described epoxy-resin systems and described fluorocarbon resin system produce obvious demixing phenomenon, effectively protect the stability of pigment changeable colors, made the powder coating that obtains have fabulous stability and weathering resistance;
3, powder coating of the present invention, described epoxy particles system and described fluorocarbon resin granular system mix with 1:1 to be made, and makes both to form with equal proportion to be separated, and makes bonding and provide protection reach balance, saves cost;
4, the present invention utilizes nation to decide technique success pigment changeable colors is bonded on epoxy resin, utilize phase detachment technique, control pigment changeable colors along with angle and do directional profile along two coating interfaces, produce unique effect, not only make the surface treatment to pigment changeable colors require to have reduced, and greatly reduce expensive pigment changeable colors along with angle addition, saved the powder coating cost;
5, the powder coating that has with the heterochromatic effect of angle of the present invention, decide by nation the movement that technology has effectively been controlled pigment changeable colors, charging property and conductivity difference between end powder and pigment changeable colors have been reduced, separation when effectively reducing their spraying applications, improve spraying decoration and the interpolation in the spraying process and reclaimed the metachroic problem of powder, and because pigment changeable colors along with angle is relative fixing with the ratio between powder particle, can re-use the recovery powder fully, new powder and recovery powder can reach almost consistent color;
6, powder coating of the present invention is because the fluorocarbon resin system consists of at skin the effect that outside surface plays the guard ring epoxy layer, therefore, epoxy particles system of the present invention does not need extra any auxiliary agent that helps to improve coating result that adds again, for the auxiliary agent that needs in prior art to add a large amount of protections and improve epoxy resin layer, saved a large amount of costs;
7, the powder coating that has with the heterochromatic effect of angle of the present invention can be by the method coating of electrostatic powder spraying, recoverable, and utilization rate of raw materials is high; An application need not spray Clear coating again, and operating efficiency is high, coating densification, sticking power, excellent in cushion effect have good weather resistance, do not add various liquid chemical film forming, dispersion, anticorrosion, mildew-resistant, solvent etc., environment protection health, transportation, storage are conveniently;
8, use the article of powder coating of the present invention, have strongly in the heterochromatic effect of angle, and coating is difficult for occuring the mill flower, and color and luster is even, and fashion is attractive in appearance, demonstrates high-grade decorative effect, and durable in use, is fit to very much high-grade decoration field.
Description of drawings
For content of the present invention is more likely to be clearly understood, the below according to a particular embodiment of the invention and by reference to the accompanying drawings, the present invention is further detailed explanation, wherein
Fig. 1 is the electron microscope scanning figure of embodiment 1 gained coating;
Fig. 2 is the electron microscope scanning figure of embodiment 2 gained coatings;
Fig. 3 is the electron microscope scanning figure of embodiment 3 gained coatings;
Fig. 4 is the electron microscope scanning figure of embodiment 6 gained coatings;
Fig. 5 is the electron microscope scanning figure of embodiment 7 gained coatings;
Fig. 6 is the electron microscope scanning figure of Comparative Examples 1 gained coating;
In figure, Reference numeral is expressed as: 1-fluorocarbon resin layer, 2-epoxy resin layer, 3-separation surface, 4-pigment changeable colors, 5-epoxy resin.
Embodiment
Embodiment 1
The present embodiment is described to have powder coating with the heterochromatic effect of angle and comprises that ratio of weight and number is that the epoxy particles system of 1:1 and fluorocarbon resin granular system are dry mixed and obtain.
Described epoxy particles system is comprised of the component of following weight part:
Bisphenol A type epoxy resin E-12 and dicy-curing agent DYHARD
Amount to 75 parts;
Particle diameter is 18 parts of the pigments, mica that scribbles ferric oxide and titanium dioxide of 50-200 μ m;
15.5 parts of color stuffings; Comprise pigment and filler, described filler is selected barium sulfate such as W-44HB, described pigment is selected titanium dioxide CR826, and wherein said pigment and filler can add setting to the demand of product according to those skilled in the art, and the adding proportion of pigment described in the present embodiment and described filler is 1:1;
1 part of auxiliary agent A, described auxiliary agent A comprise edge coverage power properties-correcting agent
0.2 part, curing catalyst BASF2-MI0.3 part, wetting dispersing agent
Part, flow promotor aluminum oxide C0.3 part;
Described fluorocarbon resin granular system is comprised of the component of following weight part:
96.5 parts of FEVE resin and isocyanates solidifying agent Degussa VESTAGON B1530;
1.2 parts of flow agent GLP588;
0.6 part of air release agent st-yrax;
4 parts of auxiliary agent B, described auxiliary agent B comprise 0.8 part of antioxidant KY-1010, photostabilizer
0.5 part, UV absorption agent
1.1 1.6 parts of part and flow improver additive aerosils.
The preparation method that the present embodiment is described to have with the powder coating of the heterochromatic effect of angle comprises the steps:
(1) mix according to selected parts by weight extracting epoxy resin and dicy-curing agent, pigment changeable colors and color stuffing and auxiliary agent A and be uniformly dispersed after, by powder coating extruder in 80-150 ℃ extrude, compressing tablet, being cooled to and being crushed to particle diameter after room temperature is 30-50 μ m, the powder sieving for standby;
(2) getting the powder for preparing in selected pigment changeable colors and step (1) nation by Xiamen three and safe Science and Technology Ltd. according to selected parts by weight decides machine SHT500/1000 and carries out nation's transformation that surely bonds, cooling sieving, obtain required epoxy particles system, standby;
(3) get FEVE resin, solidifying agent Degussa VESTAGONB1530 and flow agent, air release agent and described various auxiliary agent according to selected parts by weight, after mixing and being uniformly dispersed, by powder coating extruder 80-150 ℃ extrude, compressing tablet, being cooled to and being crushed to particle diameter after room temperature is 30-50 μ m, powder sieves and obtains required fluorocarbon resin granular system, and is standby;
(4) get respectively according to the ratio of ratio of weight and number 1:1 the fluorocarbon resin granular system that obtains in the epoxy particles system that obtains in step (2) and step (3) and be dry mixed evenly, sieve and get final product.
The powder coating for preparing in the present embodiment is adopted the method spraying of high pressure electrostatic painting commonly used in prior art, obtained coating in 20 minutes in 180-200 ℃ of curing.With described coating epoxy resin embedding, afterwards with the slicing machine section, metal spraying after polishing, and by the resulting coating of sem observation, result is as shown in Figure 1.
As can be seen from the figure, prepared coating has occurred having formed obvious separation surface 3 from demixing phenomenon (in the way, shade is distinguished) in solidification process.Detect as can be known by the content to the F element, the F element all is present in surface layer, and bottom does not contain F fully, this shows, the surface layer coating is the fluorocarbon resin layer 1 that is formed by the fluorocarbon resin granular system, and bottom is complete epoxy resin layer 2 by the epoxy particles System forming.Good wettability by means of epoxy resin; make whole coating and bottom have good adhesion effect; the antiseptic property of epoxy resin also makes whole coating have antiseptic property preferably simultaneously; make whole coating not only can realize the use of outdoor decoration and by means of the weather resistance of outer fluorocarbon resin layer, whole coating is played fabulous provide protection; and have fabulous effect, and durable in use.Can find out simultaneously, described pigment changeable colors 4 effectively is along the separation surface 3 of two coatings and aligns, and because whole fluorocarbon resin layer is transparent layer, therefore, even the whole coating of pigment changeable colors 4 shows preferably with the heterochromatic effect of angle, align and be along separation surface 3 due to described pigment changeable colors 4, therefore only need less pigment changeable colors namely can form with the heterochromatic effect of angle.In addition, owing to having fabulous weather resistance at outer field fluorocarbon resin layer 1, can effectively protect the pigment changeable colors 4 of internal layer not corroded by outside contamination, make whole coating have durable effect preferably.
The present embodiment is described to have powder coating with the heterochromatic effect of angle and comprises that ratio of weight and number is that the epoxy particles system of 7:3 and fluorocarbon resin granular system are dry mixed and obtain.
Described epoxy particles system is comprised of the component of following weight part:
Bisphenol A type epoxy resin NPES-903 and replace totally 30 parts of the dicy-curing agents CASAMID710 of company (the THOMAS SWAN);
SiO through applying
240 parts of sheets;
10 parts of color stuffings; Comprise pigment and filler, described filler is selected barium sulfate such as W-44HB, described pigment is selected titanium dioxide CR826, and wherein said pigment and filler can add setting to the demand of product according to those skilled in the art, and the adding proportion of pigment described in the present embodiment and described filler is 3:1;
1.8 parts of auxiliary agent A, described auxiliary agent A comprise edge coverage power properties-correcting agent
0.5 part, 0.3 part of curing catalyst BASF2-MI, wetting dispersing agent
0.5 0.5 part of part, flow promotor aluminum oxide C;
Described fluorocarbon resin granular system is comprised of the component of following weight part:
70 parts of FEVE resins and biuret polyisocyanate solidifying agent Bayer
Totally 15 parts;
1.5 parts of flow agent PV88;
1 part of air release agent micro mist wax;
2 parts of auxiliary agent B, described auxiliary agent B comprise 0.8 part of antioxidant KY-1010, photostabilizer
0.2 part, UV absorption agent
1.1 0.9 part of part and flow improver additive aerosil.
The preparation method that the present embodiment is described to have with the powder coating of the heterochromatic effect of angle comprises the steps:
(1) mix according to selected parts by weight extracting epoxy resin and dicy-curing agent, color stuffing and auxiliary agent A and be uniformly dispersed after, by powder coating extruder in 80-150 ℃ extrude, compressing tablet, being cooled to and being crushed to particle diameter after room temperature is 30-50 μ m, the powder sieving for standby;
(2) get according to selected parts by weight the powder for preparing in selected pigment changeable colors and step (1) and decide machine by nation and carry out nation's transformation that surely bonds, cooling sieving obtains required epoxy particles system, and be standby;
(3) get FEVE resin, solidifying agent Degussa VESTAGONB1530 and flow agent, air release agent and auxiliary agent B according to selected parts by weight, after mixing and being uniformly dispersed, by powder coating extruder 80-150 ℃ extrude, compressing tablet, being cooled to and being crushed to particle diameter after room temperature is 30-50 μ m, powder sieves and obtains required fluorocarbon resin granular system, and is standby;
(4) get respectively according to the ratio of ratio of weight and number 7:3 the fluorocarbon resin granular system that obtains in the epoxy particles system that obtains in step (2) and step (3) and be dry mixed evenly, sieve and get final product.
The powder coating for preparing in the present embodiment is adopted the method spraying of high pressure electrostatic painting commonly used in prior art, obtained coating in 20 minutes in 200-220 ℃ of curing.By the resulting coating of sem observation, result as shown in Figure 2.In whole coating, fluorocarbon resin layer 1 and epoxy resin layer 2 have still produced obvious separation surface 3, and described pigment changeable colors 4 also is along the separation surface of epoxy resin layer and aligns.
The present embodiment is described to have powder coating with the heterochromatic effect of angle and comprises that ratio of weight and number is that the epoxy particles system of 3:7 and fluorocarbon resin granular system are dry mixed and obtain.
Described epoxy particles system is comprised of the component of following weight part:
Totally 90 parts of bisphenol A type epoxy resin (NPES-903) and hydrazides (ADH);
Particle diameter is 0.2 part of the aluminium flake of 100-150 μ m;
50 parts of color stuffings comprise pigment and filler, described filler select aluminium hydroxide as
Described pigment is selected Carbon Black 330 R, and wherein said pigment and filler can add setting to the demand of product according to those skilled in the art, and the adding proportion of pigment described in the present embodiment and described filler is 1:2;
0.2 part of auxiliary agent A, described auxiliary agent A comprise 0.1 part of curing catalyst BASF2-MI, wetting dispersing agent
0.1 part;
Described fluorocarbon resin granular system is comprised of the component of following weight part:
100 parts, FEVE resin and biuret polyisocyanate solidifying agent;
0.7 part of flow agent P200;
8 parts of auxiliary agent B, described auxiliary agent B comprise 2 parts of brightening agent 701 auxiliary agents, antioxidant KY-10102 part, photostabilizer
1 part, UV absorption agent
1.5 parts of 928 1.5 parts and flow improver additive aerosils;
0.3 part of air release agent st-yrax.
The preparation method that the present embodiment is described to have with the powder coating of the heterochromatic effect of angle comprises the steps:
(1) according to selected parts by weight extracting epoxy resin and solidifying agent and color stuffing, auxiliary agent A is mixed and be uniformly dispersed after, by powder coating extruder in 80-150 ℃ extrude, compressing tablet, being cooled to and being crushed to particle diameter after room temperature is 30-50 μ m, the powder sieving for standby;
(2) getting the powder for preparing in selected pigment changeable colors and step (1) nation by Xiamen three and safe Science and Technology Ltd. according to selected parts by weight decides machine SHT500/1000 and carries out nation's transformation that surely bonds, cooling sieving, obtain required epoxy particles system, standby;
(3) get FEVE resin, biuret polyisocyanate solidifying agent, flow agent, air release agent and auxiliary agent B according to selected parts by weight, after mixing and being uniformly dispersed, by powder coating extruder 80-150 ℃ extrude, compressing tablet, being cooled to and being crushed to particle diameter after room temperature is 30-50 μ m, powder sieves and obtains required fluorocarbon resin granular system, and is standby;
(4) get respectively according to the ratio of ratio of weight and number 3:7 the fluorocarbon resin granular system that obtains in the epoxy particles system that obtains in step (2) and step (3) and be dry mixed evenly, sieve and get final product.
The powder coating for preparing in the present embodiment is adopted the method spraying of the quiet spraying of high pressure commonly used in prior art, obtained coating in 20 minutes in 180-200 ℃ of curing.By the resulting coating of sem observation, result as shown in Figure 3.In whole coating, fluorocarbon resin layer 1 and epoxy resin layer 2 have still produced obvious separation surface 3, and described pigment changeable colors 4 also is along the separation surface of epoxy resin layer and aligns.
The present embodiment is described to have powder coating with the heterochromatic effect of angle and comprises that ratio of weight and number is that the epoxy particles system of 6:4 and fluorocarbon resin granular system are dry mixed and obtain.
Described epoxy particles system is comprised of the component of following weight part:
Novolac epoxy (KUKDO YDPN series) and terminal carboxyl polyester (
) totally 60 parts;
Particle diameter is 10 parts of the coating metal oxide sheets once of 100-200 μ m;
Color stuffing A12 part comprises pigment and filler, and described filler is selected nepheline syenite such as minex-10, and described pigment is selected iron oxide red
Wherein said pigment and filler can add setting to the demand of product according to those skilled in the art, and the adding proportion of pigment described in the present embodiment and described filler is 3:2;
0.5 part of auxiliary agent A, described auxiliary agent A comprise edge coverage power properties-correcting agent
0.2 part, 0.1 part of curing catalyst BASF2-MI, wetting dispersing agent
0.1 0.1 part of part, flow promotor aerosil;
Described fluorocarbon resin granular system is comprised of the component of following weight part:
94 parts of FEVE resin and Blocked Isocyanate Curing Agents (Degussa VESTAGON B 1530);
1 part of flow agent P67;
0.4 part of air release agent micro mist wax;
3.8 parts of auxiliary agent B, described auxiliary agent B comprise 1.5 parts of brightening agent 701 auxiliary agents, 0.1 part of ethylene waxes, 1.2 parts of Poly Propylene Waxes, 0.25 part of antioxidant KY-1010, photostabilizer
0.15 part, UV absorption agent
0.3 part and flow improver additive aluminum oxide C0.3 part.
The preparation method that the present embodiment is described to have with the powder coating of the heterochromatic effect of angle comprises the steps:
(1) mix according to selected parts by weight extracting epoxy resin and solidifying agent and color stuffing and auxiliary agent A and be uniformly dispersed after, by powder coating extruder in 80-150 ℃ extrude, compressing tablet, being cooled to and being crushed to particle diameter after room temperature is 30-50 μ m, the powder sieving for standby;
(2) getting the powder for preparing in selected pigment changeable colors and step (1) nation by Xiamen three and safe Science and Technology Ltd. according to selected parts by weight decides machine SHT500/1000 and carries out nation's transformation that surely bonds, cooling sieving, obtain required epoxy particles system, standby;
(3) get FEVE resin, Blocked Isocyanate Curing Agents and flow agent, air release agent and auxiliary agent B according to selected parts by weight, after mixing and being uniformly dispersed, by powder coating extruder 80-150 ℃ extrude, compressing tablet, being cooled to and being crushed to particle diameter after room temperature is 30-50 μ m, powder sieves and obtains required fluorocarbon resin granular system, and is standby;
(4) get respectively according to the ratio of ratio of weight and number 6:4 the fluorocarbon resin granular system that obtains in the epoxy particles system that obtains in step (2) and step (3) and be dry mixed evenly, sieve and get final product.
The powder coating for preparing in the present embodiment is adopted the method spraying of high pressure electrostatic painting commonly used in prior art, obtained coating in 20 minutes in 220-250 ℃ of curing.
Embodiment 5
The present embodiment is described to have powder coating with the heterochromatic effect of angle and comprises that ratio of weight and number is that the epoxy particles system of 4:6 and fluorocarbon resin granular system are dry mixed and obtain.
Described epoxy particles system is comprised of the component of following weight part:
Mixture and the hydrazides solidifying agent (ADH) of bisphenol A type epoxy resin (E-12) novolac epoxy (KUKDO YDPN series) amount to 83 parts;
Particle diameter is 30 parts of the multi-layer pigments through applying of 100-150 μ m;
30 parts of color stuffings, comprise pigment and filler, described filler is selected barium sulfate such as W-44HB, described pigment is selected yellow pigment Permanent Yellow DHG, wherein said pigment and filler can add setting to the demand of product according to those skilled in the art, and the adding proportion of pigment described in the present embodiment and described filler is 2:3;
1.4 parts of auxiliary agent A, described auxiliary agent A comprise edge coverage power properties-correcting agent
0.5 part, 0.2 part of curing catalyst BASF2-MI, wetting dispersing agent
0.5 0.2 part of part, flow promotor aerosil;
Described fluorocarbon resin granular system is comprised of the component of following weight part:
FEVE resin and Blocked Isocyanate Curing Agents (
) 97.8 parts;
1.4 parts of flow agent GLP588;
0.8 part of air release agent micro mist wax;
6.2 parts of auxiliary agent B, described auxiliary agent B comprise 1.5 parts of brightening agent 701 auxiliary agents, 1.5 parts of ethylene waxes, 0.5 part of Poly Propylene Wax, 0.5 part of antioxidant KY-1010, photostabilizer
0.5 part, UV absorption agent
0.3 part and flow improver additive aluminum oxide C0.4 part.
The preparation method that the present embodiment is described to have with the powder coating of the heterochromatic effect of angle comprises the steps:
(1) mix according to selected parts by weight extracting epoxy resin and phenolic hydroxyl group resin curing agent and color stuffing and auxiliary agent A and be uniformly dispersed after, by powder coating extruder in 80-150 ℃ extrude, compressing tablet, being cooled to and being crushed to particle diameter after room temperature is 30-50 μ m, the powder sieving for standby;
(2) get according to selected parts by weight the powder for preparing in selected pigment changeable colors and step (1) and decide machine by nation and carry out nation's transformation that surely bonds, cooling sieving obtains required epoxy particles system, and be standby;
(3) get FEVE resin, Blocked Isocyanate Curing Agents and flow agent, air release agent and auxiliary agent B according to selected parts by weight, after mixing and being uniformly dispersed, by powder coating extruder 80-150 ℃ extrude, compressing tablet, being cooled to and being crushed to particle diameter after room temperature is 30-50 μ m, powder sieves and obtains required fluorocarbon resin granular system, and is standby;
(4) get respectively according to the ratio of ratio of weight and number 4:6 the fluorocarbon resin granular system that obtains in the epoxy particles system that obtains in step (2) and step (3) and be dry mixed evenly, sieve and get final product.
The powder coating for preparing in the present embodiment is adopted the method spraying of fluidized-bed spraying commonly used in prior art, obtained coating in 20 minutes in 180-200 ℃ of curing.
Embodiment 6
The present embodiment is described to have powder coating with the heterochromatic effect of angle and comprises that ratio of weight and number is that the epoxy particles system of 7:3 and fluorocarbon resin granular system are dry mixed and obtain.
Described epoxy particles system is comprised of the component of following weight part:
Bisphenol A type epoxy resin NPES-903 and replace the dicy-curing agent CASAMID710 of company (the THOMAS SWAN) and amount to 30 parts;
Particle diameter is the SiO through applying of 20-100 μ m
250 parts of sheets;
3 parts of auxiliary agent A, described auxiliary agent A comprise edge coverage power properties-correcting agent
1.5 part, 0.5 part of curing catalyst BASF2-MI, wetting dispersing agent
0.5 0.5 part of part, flow promotor aluminum oxide C;
Described fluorocarbon resin granular system is comprised of the component of following weight part:
FEVE resin and biuret polyisocyanate solidifying agent Bayer
Totally 80 parts;
2.5 parts of flow agent PV88;
2 parts of air release agent micro mist waxes.
The preparation method that the present embodiment is described to have with the powder coating of the heterochromatic effect of angle comprises the steps:
(1) mix according to selected parts by weight extracting epoxy resin and dicy-curing agent and auxiliary agent A and be uniformly dispersed after, by powder coating extruder in 80-150 ℃ extrude, compressing tablet, being cooled to and being crushed to particle diameter after room temperature is 30-50 μ m, the powder sieving for standby;
(2) getting the powder for preparing in selected pigment changeable colors and step (1) nation by Xiamen three and safe Science and Technology Ltd. according to selected parts by weight decides machine SHT500/1000 and carries out nation's transformation that surely bonds, cooling sieving, obtain required epoxy particles system, standby;
(3) get FEVE resin, solidifying agent Degussa VESTAGONB1530 and flow agent, air release agent according to selected parts by weight, after mixing and being uniformly dispersed, by powder coating extruder 80-150 ℃ extrude, compressing tablet, being cooled to and being crushed to particle diameter after room temperature is 30-50 μ m, powder sieves and obtains required fluorocarbon resin granular system, and is standby;
(4) get respectively according to the ratio of ratio of weight and number 7:3 the fluorocarbon resin granular system that obtains in the epoxy particles system that obtains in step (2) and step (3) and be dry mixed evenly, sieve and get final product.
The powder coating for preparing in the present embodiment is adopted the method spraying of high pressure electrostatic painting commonly used in prior art, obtained coating in 20 minutes in 200-220 ℃ of curing.By the resulting coating result of sem observation as shown in Figure 4.In whole coating, although distant demixing phenomenon also occurred, be distributed in whole being coated with in sheaf space but pigment changeable colors is mixed and disorderly, and the separation surface and the unfairness that form, the arrangement of pigment changeable colors also and irregularity, even still exist pigment changeable colors to be exposed to outer even mixed poly-phenomenon, whole coating is also not obvious with the heterochromatic effect of angle.Therefore, the coating of this originating party case formation is the effect in all obviously being not so good as previous embodiment 1-5 in the layering sharpness or with angle on heterochromatic effect.
Embodiment 7
The present embodiment is described to have powder coating with the heterochromatic effect of angle and comprises that ratio of weight and number is that the epoxy particles system of 3:7 and fluorocarbon resin granular system are dry mixed and obtain.
Described epoxy particles system is comprised of the component of following weight part:
Bisphenol A type epoxy resin (E-12) and phenolic hydroxyl group resin (KUKDO KD-420) amount to 100 parts;
Particle diameter is 0.1 part, the pearl white sheet, aluminium flake of 100-150 μ m and LCP pigment flakes mixture;
65 parts of color stuffings, comprise pigment and filler, described filler is selected barium sulfate such as W-44HB, and described pigment is selected phthalocyanine GNM, wherein said pigment and filler can add setting to the demand of product according to those skilled in the art, and the adding proportion of pigment described in the present embodiment and described filler is 3:4;
Described fluorocarbon resin granular system is comprised of the component of following weight part:
110 parts, FEVE resin and biuret polyisocyanate solidifying agent;
0.2 part of flow agent P200;
10 parts of auxiliary agent B, described auxiliary agent B comprise 2 parts of brightening agent 701 auxiliary agents, 2 parts of antioxidant KY-1010, photostabilizer
2 parts, UV absorption agent
1.5 2.5 parts of part and flow improver additive aerosils;
0.1 part of air release agent st-yrax.
The preparation method that the present embodiment is described to have with the powder coating of the heterochromatic effect of angle comprises the steps:
(1) get terminal carboxyl polyester and isocyanic acid three-glycidyl ester solidifying agent and color stuffing and mix and be uniformly dispersed according to selected parts by weight after, by powder coating extruder in 80-150 ℃ extrude, compressing tablet, being cooled to and being crushed to particle diameter after room temperature is 30-50 μ m, the powder sieving for standby;
(2) get according to selected parts by weight the powder for preparing in selected pigment changeable colors and step (1) and decide machine by nation and carry out nation's transformation that surely bonds, cooling sieving obtains required epoxy particles system, and be standby;
(3) get FEVE resin, biuret polyisocyanate solidifying agent, flow agent, air release agent and auxiliary agent B according to selected parts by weight, after mixing and being uniformly dispersed, by powder coating extruder 80-150 ℃ extrude, compressing tablet, being cooled to and being crushed to particle diameter after room temperature is 30-50 μ m, powder sieves and obtains required fluorocarbon resin granular system, and is standby;
(4) get respectively according to the ratio of ratio of weight and number 3:7 the fluorocarbon resin granular system that obtains in the epoxy particles system that obtains in step (2) and step (3) and be dry mixed evenly, sieve and get final product.
The powder coating for preparing in the present embodiment is adopted the method spraying of the quiet spraying of high pressure commonly used in prior art, obtained coating in 20 minutes in 180-200 ℃ of curing.By the resulting coating result of sem observation as shown in Figure 5.In whole coating, although distant demixing phenomenon also occurred, be distributed in whole being coated with in sheaf space but pigment changeable colors is mixed and disorderly, and the separation surface and the unfairness that form, the arrangement of pigment changeable colors also and irregularity, even still exist pigment changeable colors to be exposed to outer even mixed poly-phenomenon, whole coating is also not obvious with the heterochromatic effect of angle.Therefore, the coating of this originating party case formation is the effect in all obviously being not so good as previous embodiment 1-5 in the layering sharpness or with angle on heterochromatic effect.
Comparative Examples 1
Feed composition given in the selected component of powder coating described in the present embodiment and embodiment 3 is identical, its difference only is according to after the compositional selecting that marks in embodiment 3, directly each component is mixed, and by powder coating extruder in 80-150 ℃ extrude, compressing tablet, being cooled to and being crushed to particle diameter after room temperature is 30-50 μ m, after powder sieves and pigment changeable colors decide technique by nation and bond, obtain required powder coating.
The powder coating that obtains is adopted the method spraying of high pressure electrostatic painting commonly used in prior art, obtained coating in 20 minutes in 180-200 ℃ of curing.By the resulting coating of sem observation, result as shown in Figure 6.
as shown in Figure 6, obvious separation surface does not appear in whole coating, as seen each component is not directly produced phenomenon of phase separation according to the coating that the preparation method of powder coating obtains, crude aluminum silver powder pigment changeable colors is erratic to be appeared in whole coating, the erratic arrangement of pigment changeable colors can cause its usage quantity to strengthen on the one hand, fluorocarbon resin and epoxy resin mixed distribution on the other hand, when making epoxy resin be exposed in air, denaturalization phenomenon can appear, pigment changeable colors is exposed to the external world simultaneously, also make whole coating oxidized phenomenon can occur, do not have durable effect.
Above-described embodiment 1-7 gained coating is labeled as coating A-G, is labeled as H with the resulting coating of Comparative Examples 1, and carry out anticorrosion and the weather resistance test to above-mentioned coating, concrete test index and performance perameter see following table 1 for details:
The performance test of table 1 coating A-I
From upper table data as seen, powder coating of the present invention is in use owing to can forming the phenomenon that is separated, by means of fluorocarbon resin fabulous weather resistance and the fabulous anticorrosion and wettability of epoxy resin, make whole coating have fabulous shock-resistance, preservative property and stability of gloss.And each component of the present invention forms content by it reasonably is set, and its performance perameter is optimum; And its anticorrosion and weather resistance of the coating for preparing with the method for preparing powder coating in prior art obviously is weaker than scheme of the present invention.As seen; the coating that the mode that is dry mixed with epoxy resin and fluorocarbon resin of the present invention forms; the phenomenon of phase separation that forms in solidification process not only helps the weather-proof and antiseptic property of coating; pigment changeable colors is under the protection of fluorocarbon resin simultaneously; also avoided long generation spoilage problems; not only has with the heterochromatic effect of angle stable performance simultaneously.Carry out anticorrosion and weather resistance detects to the formed coating of previous embodiment 1-5, confirm that the powder coating that has with the heterochromatic effect of angle of the present invention meets the technical requirement in following table 2:
The Performance Detection index of table 2 coating
Obviously, above-described embodiment is only for example clearly is described, and is not the restriction to embodiment.For those of ordinary skill in the field, can also make other changes in different forms on the basis of the above description.Here need not also can't give all embodiments exhaustive.And the apparent variation of being extended out thus or change still are among the protection domain of the invention.
Claims (10)
1. a powder coating that has with the heterochromatic effect of angle, is characterized in that: comprise
Ratio of weight and number is epoxy particles system and the fluorocarbon resin granular system of 7-3:3-7;
Described epoxy particles system is comprised of the component of following weight part:
Described fluorocarbon resin granular system is comprised of the component of following weight part:
2. the powder coating that has with the heterochromatic effect of angle according to claim 1 is characterized in that:
Described epoxy particles system is comprised of the component of following weight part:
Described fluorocarbon resin granular system is comprised of the component of following weight part:
3. the powder coating that has with the heterochromatic effect of angle according to claim 1 and 2 is characterized in that:
The ratio of weight and number of described epoxy particles system and described fluorocarbon resin granular system is 6-4:4-6.
4. 3 described powder coating that have with the heterochromatic effect of angle according to claim 1 and 2 is characterized in that:
The ratio of weight and number of described epoxy particles system and described fluorocarbon resin granular system is 1:1.
5. according to claim 1-4 arbitrary described powder coating that have with the heterochromatic effect of angle is characterized in that:
Described epoxy resin comprises bisphenol A type epoxy resin and/or novolac epoxy.
6. the powder coating that has with the heterochromatic effect of angle according to claim 5 is characterized in that:
Described fluorocarbon resin is FEVE resin and/or trifluorochloroethylene-alkyl vinyl ether copolymerized fluorocarbon resin.
7. according to claim 5 or 6 described powder coating that have with the heterochromatic effect of angle is characterized in that:
Described pigment changeable colors comprises pigments, mica, the SiO through applying that scribbles ferric oxide and/or titanium dioxide
2Sheet, the metal oxide sheet that applies one or many, pearl white sheet, aluminium flake, LCP pigment flakes, the sheet glass through applying and/or one or more the mixture in multi-layer pigments.
8. the powder coating that has with the heterochromatic effect of angle according to claim 7 is characterized in that:
The particle diameter of described pigment changeable colors is 5-200 μ m.
9. one kind prepares the arbitrary described method that has with the powder coating of the heterochromatic effect of angle of claim 1-8, it is characterized in that, comprises the steps:
(1) get after described epoxy resin and adaptive solidifying agent A, color stuffing and auxiliary agent A mix and be uniformly dispersed according to selected parts by weight, by forcing machine extrude, compressing tablet, cooling rear pulverizing, powder sieving for standby;
(2) get the powder that obtains in step (1) and described pigment changeable colors and decide the technique transformation that bonds by nation, cooling sieving obtains required epoxy particles system, and be standby;
After each component of (3) getting described fluorocarbon resin and adaptive solidifying agent B, flow agent, air release agent and auxiliary agent B granular system according to selected parts by weight is mixed and is uniformly dispersed, by forcing machine extrude, compressing tablet, cooling rear pulverizing, powder sieves and obtains required fluorocarbon resin granular system, and is standby;
(4) get respectively according to selected ratio of weight and number the described carbon resin granular system of fluorine that obtains in the described epoxy particles system that obtains in step (2) and step (3) and be dry mixed evenly, and get final product.
10. a powder coating that has with the heterochromatic effect of angle, is characterized in that, the arbitrary described powder coating that has with the heterochromatic effect of angle of claim 1-8 sprayed and solidify to obtain.
Priority Applications (1)
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| CN104017408A (en) * | 2014-06-24 | 2014-09-03 | 玉石塑粉有限公司 | Thermosetting powder coating additive and preparation process thereof as well as coating containing thermosetting powder coating additive |
| CN105385299A (en) * | 2015-12-14 | 2016-03-09 | 巨野浩远粉末有限公司 | Environmentally-friendly glass powdery coating and preparation method thereof |
| CN106033272A (en) * | 2015-03-17 | 2016-10-19 | 南昌欧菲光学技术有限公司 | Touch panel and manufacturing method thereof |
| CN110038780A (en) * | 2018-01-16 | 2019-07-23 | 关西涂料株式会社 | Corrosion-proof coating method |
| CN110639780A (en) * | 2019-10-25 | 2020-01-03 | 深圳市崯涛油墨科技有限公司 | Gradient color spraying process |
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| CN110038780B (en) * | 2018-01-16 | 2023-01-13 | 关西涂料株式会社 | Anti-corrosion coating method |
| CN110639780A (en) * | 2019-10-25 | 2020-01-03 | 深圳市崯涛油墨科技有限公司 | Gradient color spraying process |
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| CN103131306B (en) | 2015-04-22 |
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