CN103146288A - Metal alike art type powder coating and preparation method thereof - Google Patents
Metal alike art type powder coating and preparation method thereof Download PDFInfo
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- CN103146288A CN103146288A CN2013101089554A CN201310108955A CN103146288A CN 103146288 A CN103146288 A CN 103146288A CN 2013101089554 A CN2013101089554 A CN 2013101089554A CN 201310108955 A CN201310108955 A CN 201310108955A CN 103146288 A CN103146288 A CN 103146288A
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Abstract
The invention belongs to the field of a powder coating and particularly relates to a metal alike art type powder coating. The metal alike art type powder coating comprises an epoxy resin particle system and a fluorocarbon resin particle system, wherein the epoxy resin particle system contains epoxy resin, an adaptive curing agent A and a flatting agent A; the fluorocarbon resin particle system contains fluorocarbon resin, an adaptive curing agent B and a flatting agent B; and the weight part ratio of the epoxy resin particle system to the fluorocarbon resin particle system is (6-4):(4-6). According to the metal alike art type powder coating, the incompatibility of the flatting agent, the epoxy resin and the fluorocarbon resin is utilized for controlling the distribution the flatting agent, the epoxy resin and the fluorocarbon resin in coating layers, so that the flatting agent is evenly dispersed between the epoxy resin layer and the fluorocarbon resin layer to generate a visual effect of alternative dark and bright, and then a metal alike effect is achieved.
Description
Technical field
The invention belongs to art of powder coatings, be specifically related to art-type powder coatings of a kind of imitative metal effect and preparation method thereof.
Background technology
Art-type powder coatings is one of important R﹠D direction of art of powder coatings, and art-type powder coatings mainly contains sand streak, wrinkle, tangerine line, mallear stria, metallic equivalent fruit kind at present.The art-type powder coatings effect of using pearly-lustre, metal and various texture agent to make is gorgeous or simple and unsophisticated, has good exterior decorative effect, can satisfy the required various decorative effects of people, and day by day be subject to liking of people, more replace with outstanding outward appearance visual sense, outstanding concavo-convex sense of touch, excellent physical and mechanical properties the first-selection that liquid coating becomes people's finishing and decorates.Metal powder coating wherein is because it can show a kind of bright, luxurious decorative effect, and outward appearance fashion is attractive in appearance, is fit to very much the spraying of the indoor outer objects such as household, ornaments and automobile.
The metallic pigment that can be applied at present metal powder coating have many kinds, are divided into substantially four classes, i.e. aluminium silver powder pigment, pearly pigment, copper gold pigment and other metallic pigment (as nickel powder, Stainless Steel Powder etc.).Each metalloid pigment comprises again the product of a lot of form and aspect, after being applied to powder, just makes powder colourful, has greatly enriched the kind of powder coating and ornamental.but make because the particle diameter of the metallic pigment that add is less its extrude and dispersion process in often be in the extexine of coating, therefore the greatest problem that exists of metal powder coating is namely to cause metal powder coating not wear-resisting due to metallic pigment and air catalytic oxidation, easily wipe the unstable of falling, that dry mix or the Bang Dingfa technique that mainly adopt present domestic and international market all can not thoroughly address this problem, the unique method of head it off figure is spraying layer of transparent coating on metal-powder is filmed at present, material and painting cost are increased, and increased difficulty of construction.In addition, the anticorrosion and tolerance performance of metal powder coating also has to be hoisted.
In addition, because the electroconductibility difference of other material in metallic pigment and powder coating is very large, especially easily occuring separating of metallic pigment and end powder, cause coating that the problems such as mill flower occur, also brings a lot of difficult problems to spray coating constructing technique in spraying.And there is environmental pollution mostly in these metallic pigment, especially as the also easy firing blast of aluminium silver powder, give and produce, store, transport and bring many hidden danger.
Summary of the invention
For this reason, technical problem to be solved by this invention is that the easy oxidation of metal powder coating in prior art, easy wiping fall, unsettled problem, and then a kind of art-type powder coatings with imitative metal effect is provided;
Second technical problem to be solved by this invention is to provide a kind of imitative metal art-type powder coatings with protection against corrosion and weather resistance;
The present invention also provides the method for preparing above-mentioned powder coating;
Further, the present invention also provides a kind of coating that is formed by above-mentioned powder coating.
For solving the problems of the technologies described above, imitative metal art-type powder coatings of the present invention comprises the epoxy particles system that contains epoxy resin, adaptive solidifying agent A and flow agent A and contains fluorocarbon resin, adaptive solidifying agent B and the fluorocarbon resin granular system of flow agent B;
The ratio of weight and number of described epoxy particles system and described fluorocarbon resin granular system is 6-4:4-6;
Described epoxy particles system comprises that the component of following weight part forms:
Epoxy resin and adaptive solidifying agent A 40-98.7 part;
Flow agent A 0.5-2 part;
Color stuffing 0.8-60 part;
Auxiliary agent A 2-10 part;
Described fluorocarbon resin granular system comprises that the component of following weight part forms:
Fluorocarbon resin and adaptive solidifying agent B 87-99.3 part;
Flow agent B 0.7-1.5 part;
Auxiliary agent B 0.5-10 part.
Preferably, described epoxy particles system comprises that the component of following weight part forms:
80 parts of epoxy resin and adaptive solidifying agent A;
1.5 parts of flow agent A;
13.2 parts of color stuffings;
3.8 parts of auxiliary agent A;
Described fluorocarbon resin granular system comprises that the component of following weight part forms:
96.7 parts of fluorocarbon resin and adaptive solidifying agent B;
1 part of flow agent B;
2.3 parts of auxiliary agent B.
The ratio of weight and number of described epoxy particles system and described fluorocarbon resin granular system is 5.5-4.5:4.5-5.5.
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 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, solidify purpose as long as make the cooperation of epoxy resin and solidifying agent reach, generally the ratio 90-95:5-10 with epoxy resin and solidifying agent is advisable.
Described epoxy resin is one or more the mixture in bisphenol A type epoxy resin (NPES-903, E-12), novolac epoxy (KUKDO YDPN series).Described solidifying agent A is Dyhard RU 100 (DYHARD
100S), replace the Dyhard RU 100 CASAMID 710 of company (the THOMAS SWAN), hydrazides (ADH), phenolic hydroxyl group resin (KUKDO KD-420) or terminal carboxyl polyester (DSM Uralac
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 Lumiflon 710, described solidifying agent B is conventional isocyanates solidifying agent such as Degussa VESTAGON B 1530, Bayer crelan
NW-5 or Blocked Isocyanate Curing Agents or biuret polyisocyanate solidifying agent (Degussa VESTAGON B1530, Bayer crelan
EF403) one or more, generally the ratio 80:20 with fluorocarbon resin and solidifying agent is advisable.
The polyether oligomers that described flow agent A is the acid amides modification is powdermate for example
486cfl.
Described flow agent B is the acrylic acid or the like flow agent, as GLP588, PV88, P67, P200 etc.
Described color stuffing comprises pigment and filler, can select to add according to color stuffing common in this area, and further, described filler comprises barium sulfate such as W-44HB, aluminium hydroxide such as Portafill
A40 nepheline syenite such as minex-10 etc., described pigment comprises titanium dioxide CR826, Carbon Black 330 R, iron oxide red Bayferrox
180m, 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 comprises edge coverage power properties-correcting agent (Kuraray
Mowital), curing catalyst (BASF2-MI), wetting dispersing agent (THIXATROL
ST), one or more the mixture in flow promotor (aerosil or aluminum oxide C), any auxiliary agent that improves the coatingsurface effect can not add.
Described auxiliary agent B comprises one or more the mixture in air release agent, brightening agent, flow improver additive, wax, antioxidant, photostabilizer or UV absorption agent.
Described air release agent is st-yrax or micro mist wax, preferred 701 auxiliary agents of 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 the preferred Ciba of described UV absorption agent
TINUVIN
144 or Ciba
TINUVIN
928.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 present invention also provides a kind of method for preparing above-mentioned imitative metal art-type powder coatings, comprises the steps:
(1) get after described epoxy resin and adaptive solidifying agent A, flow 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 are sieved and obtained required epoxy particles system, and be standby;
After each component of (2) getting described fluorocarbon resin and adaptive solidifying agent B, flow agent B 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 are sieved and obtained required fluorocarbon resin granular system, and be standby;
(3) get respectively according to selected ratio of weight and number the fluorocarbon resin granular system that obtains in the epoxy particles system that obtains in step (1) and step (2) and be dry mixed evenly, and get final product.
In described step (1) and described step (2), the temperature of described extrusion step is 80-150 ℃.
In described step (1) and described step (2), the powder particle diameter of described pulverising step is 30-50 μ m.
The present invention also provides a kind of imitative metal art-type powder coatings for preparing according to aforesaid method.
The present invention also provides a kind of imitative metal fine arts type powder coating, described imitative metal art-type powder coatings is sprayed and solidifies 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, and 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 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 is different and the very big uncompatibility that causes forms phenomenon of phase separation 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 because guaranteeing coating, the superpower weather resistance of fluorocarbon resin has the performances such as corrosion-resistant, acid and alkali-resistance and UV resistant, reach coating is not damaged, can be used for the use of exterior decoration; And 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 simultaneously, protection base material and rot-resistant effect have also been played, and the present invention utilizes uncompatibility and the phenomenon of phase separation of flow agent and epoxy resin and fluorocarbon resin, make epoxy resin and fluorocarbon resin produce the layering video picture at interval, because fluorocarbon resin is transparent, namely produce separately light and dark visual effect with the color of epoxy resin, reached the effect of imitative metal; Whole figure layer appears as three-dimensional profile depth and texture, can strengthen the metal sense by enhancing contrast ratio, the degree of depth, tone, color and color and luster, and the size of texture is controlled by the flow agent consumption of different coating;
2, powder coating of the present invention comprises the weight part ratio of each component of resin, solidifying agent and flow agent 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, utilize flow agent to make both once interval layerings, make the powder coating that obtains produce the effect of imitative metal, and 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 imitative metal art-type powder coatings of making as stated above, its coating adhesion is 0 grade, shock strength is 50kg.cm, aberration Δ E＜1 between batch, the artificial accelerated aging time, acid salt fog was greater than 1000 hours greater than 1000 hours, and neutral salt spray was greater than 2000 hours, natural be exposed to the sun 1 year non-foaming, do not ftracture, do not peel off, not efflorescence, it is good that the metal sense keeps;
5, the present invention brings the effect of three-dimensional coating by being separated of different components, does not add the effect that metallic pigment have namely reached imitative metal, has avoided simultaneously the technical barrier of the easy oxidation of metal powder coating;
6, a kind of imitative metal art-type powder coatings of the present invention, be a kind of novel texture structure, has simultaneously imitative metal effect, the article of spraying powder coating of the present invention, and the appearance of coat decorative effect is good, and concave-convex sense is strong, and between batch, product stability is strong.And durable in use, be fit to very much high-grade decoration field.Using method is simple, nontoxic, nothing danger, pollution-free, and an application, operating efficiency is high.
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 figure layer;
Fig. 2 is the electron microscope scanning figure of embodiment 2 gained figure layers;
Fig. 3 is the electron microscope scanning figure of embodiment 3 gained figure layers;
Fig. 4 is the electron microscope scanning figure of embodiment 4 gained figure layers;
Fig. 5 is the electron microscope scanning figure of embodiment 6 gained figure layers;
Fig. 6 is the electron microscope scanning figure of embodiment 7 gained figure layers;
Fig. 7 is the electron microscope scanning figure of Comparative Examples 1 gained figure layer;
In figure, Reference numeral is expressed as: 1-fluorocarbon resin layer, 2-epoxy resin layer, 3-separation surface.
Embodiment
Embodiment 1
The described imitative metal art-type powder coatings of the present embodiment 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
100S) totally 80 parts;
1.5 parts of the polyether oligomers of flow agent-acid amides modification;
13.2 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, 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;
3.8 parts of auxiliary agent A, described auxiliary agent A comprise edge coverage power properties-correcting agent Kuraray
Mowital0.5 part, curing catalyst BASF2-MI1.5 part, wetting dispersing agent THIXATROL
ST0.9 part, flow promotor aluminum oxide C0.9 part;
Described fluorocarbon resin granular system is comprised of the component of following weight part:
Totally 96.7 parts of FEVE resin and isocyanates solidifying agent Degussa VESTAGON B1530;
Flow agent GLP5881 part;
2.3 parts of auxiliary agent B, described auxiliary agent B comprise antioxidant KY-10100.5 part, photostabilizer Ciba
TINUVIN
1440.5 part, UV absorption agent Ciba
TINUVIN
9280.5 0.8 part of part and flow improver additive aerosil.
The preparation method of the described imitative metal art-type powder coatings of the present embodiment comprises the steps:
(1) mix according to selected parts by weight extracting epoxy resin and dicy-curing agent, flow 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, obtain required epoxy particles system, standby;
(2) get FEVE resin, solidifying agent Degussa VESTAGONB1530 and flow 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;
(3) 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 (1) and step (2) 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 slicing machine section, metal spraying after polishing, and by (lower with) resulting coating under the sem observation 50 μ m visuals field, 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 (with color application difference in scheming) 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, surface layer figure layer 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 figure layer and bottom have good adhesion effect; the antiseptic property of epoxy resin also makes whole figure layer have antiseptic property preferably simultaneously; make whole figure layer not only can realize the use of outdoor decoration and by means of the weather resistance of outer fluorocarbon resin layer, whole figure layer is played fabulous provide protection; and have fabulous effect, and durable in use.Can see simultaneously, by means of the uncompatibility of flow agent and epoxy resin and fluorocarbon resin, the interval layering of gate ring epoxy resins and fluorocarbon resin utilizes colour-difference to produce light and dark visual effect, reaches the effect of imitative metal.
The described imitative metal art-type powder coatings of the present embodiment 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:
Bisphenol A type epoxy resin NPES-903 and replace totally 40 parts of the dicy-curing agents CASAMID 710 of company (the THOMAS SWAN);
2 parts of the polyether oligomers of flow agent-acid amides modification;
0.8 part of color stuffing comprises pigment and filler, and described filler is selected aluminium hydroxide such as Portafill
A40, 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 2:1;
10 parts of auxiliary agent A, described auxiliary agent A comprise edge coverage power properties-correcting agent Kuraray
Mowital2.5 part, curing catalyst BASF2-MI2.5 part, wetting dispersing agent THIXATROL
ST2.5 part, flow promotor aluminum oxide C2.5 part.
Described fluorocarbon resin granular system is comprised of the component of following weight part:
FEVE resin and biuret polyisocyanate solidifying agent Bayer crelan
87 parts of EF403;
1.5 parts of flow agent PV88;
0.5 part of auxiliary agent B, described auxiliary agent B comprise 0.2 part of antioxidant (KY-1010), photostabilizer (Ciba
TINUVIN
144) 0.2 part, UV absorption agent (Ciba
TINUVIN
928) 0.1 part.
The preparation method of the described imitative metal art-type powder coatings of the present embodiment comprises the steps:
(1) mix according to selected parts by weight extracting epoxy resin and dicy-curing agent, color stuffing, flow agent PV88 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, powder obtains required epoxy particles system, and is standby;
(2) get FEVE resin, solidifying agent Degussa VESTAGONB1530 and flow 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;
(3) 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 (1) and step (2) 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 figure layer, fluorocarbon resin layer and epoxy resin layer have still produced obvious separation surface.
The described imitative metal art-type powder coatings of the present embodiment 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:
(KUKD OKD-420 amounts to 98.7 parts for novolac epoxy (KUKDO YDPN series) and phenolic hydroxyl group resin curing agent;
0.5 part of the polyether oligomers of flow agent-acid amides modification;
60 parts of color stuffings comprise pigment and filler, and described filler is selected aluminium hydroxide such as Portafill
A40, 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;
2 parts of auxiliary agent A, described auxiliary agent A comprise edge coverage power properties-correcting agent (Kuraray
Mowital) 0.5 part, 0.5 part of curing catalyst (BASF2-MI), wetting dispersing agent (THIXATROL
ST) 0.3 part, flow promotor aluminum oxide C0.7 part
Described fluorocarbon resin granular system is comprised of the component of following weight part:
99.3 parts, FEVE resin and biuret polyisocyanate solidifying agent;
0.7 part of flow agent P67;
10 parts of auxiliary agent B, described auxiliary agent B comprise 1.5 parts of air release agent st-yraxes, 2 parts of brightening agent 701 auxiliary agents, antioxidant KY-10101.5 part, photostabilizer Ciba
TINUVIN
1442 parts, UV absorption agent Ciba
TINUVIN
9281.5 1.5 parts of part and flow improver additive aerosils.
The preparation method of the described imitative metal art-type powder coatings of the present embodiment comprises the steps:
(1) mix according to selected parts by weight extracting epoxy resin and phenolic hydroxyl group resin curing agent, flow agent and color stuffing, 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, sieving obtains required epoxy particles system, standby;
(2) get FEVE resin, biuret polyisocyanate solidifying agent, flow 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;
(3) 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 (1) and step (2) 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.By the resulting coating of sem observation, result as shown in Figure 3, in whole figure layer, fluorocarbon resin layer and epoxy resin layer have still produced obvious separation surface.
Embodiment 4
The described imitative metal art-type powder coatings of the present embodiment comprises that ratio of weight and number is that the epoxy particles system of 5.5:4.5 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 (DSM Uralac
P5980 amounts to 60 parts;
1 part of the polyether oligomers of flow agent-acid amides modification;
8.5 parts of color stuffings comprise pigment and filler, and described filler is selected nepheline syenite such as minex-10, and described pigment is selected iron oxide red Bayferrox
180m, 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;
2 parts of auxiliary agent A, described auxiliary agent A comprise edge coverage power properties-correcting agent Kuraray
Mowital0.5 part, curing catalyst BASF2-MI0.5 part, wetting dispersing agent THIXATROL
0.5 part of ST0.5 part, flow promotor aerosil;
Described fluorocarbon resin granular system is comprised of the component of following weight part:
93 parts of FEVE resin and Blocked Isocyanate Curing Agents (Degussa VESTAGON B1530);
0.8 part of flow agent P200;
1.2 parts of auxiliary agent B, described auxiliary agent B comprise 0.2 part of air release agent micro mist wax, 0.2 part of brightening agent 701 auxiliary agent, 0.2 part of ethylene waxes, 0.1 part of Poly Propylene Wax, antioxidant KY-10100.1 part, photostabilizer Ciba
TINUVIN
1440.2 part, UV absorption agent Ciba
TINUVIN
9280.1 part and flow improver additive aluminum oxide C0.1 part.
The preparation method of the described imitative metal art-type powder coatings of the present embodiment comprises the steps:
(1) mix according to selected parts by weight extracting epoxy resin and phenolic hydroxyl group resin curing agent, flow 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, sieving obtains required epoxy particles system, standby;
(2) get FEVE resin, Blocked Isocyanate Curing Agents and flow agent, 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;
(3) get respectively according to the ratio of ratio of weight and number 5.5:4.5 the fluorocarbon resin granular system that obtains in the epoxy particles system that obtains in step (1) and step (2) 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.By the resulting coating of sem observation, result as shown in Figure 4, in whole figure layer, fluorocarbon resin layer and epoxy resin layer have still produced obvious separation surface.
Embodiment 5
The described imitative metal art-type powder coatings of the present embodiment comprises that ratio of weight and number is that the epoxy particles system of 4.5:5.5 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 hydrazides (ADH) amount to 90 parts;
1.8 parts of the polyether oligomers of flow agent-acid amides modification;
37 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;
7.1 parts of auxiliary agent A, described auxiliary agent A comprise edge coverage power properties-correcting agent Kuraray
Mowital0.75 part, curing catalyst BASF2-MI1.75 part, wetting dispersing agent THIXATROL
2.1 parts of ST2.5 part, flow promotor aerosils;
Described fluorocarbon resin granular system is comprised of the component of following weight part:
FEVE resin and Blocked Isocyanate Curing Agents (Bayer crelan
NW-5) 98.1 parts;
1.2 parts of flow agent GLP588;
6.2 parts of auxiliary agent B, described auxiliary agent B comprise 0.5 part of air release agent micro mist wax, 0.5 part of brightening agent 701 auxiliary agent, 0.5 part of ethylene waxes, 0.5 part of Poly Propylene Wax, antioxidant KY-10100.5 part, photostabilizer Ciba
TINUVIN
1440.5 part, UV absorption agent Ciba
TINUVIN
9281.5 part and flow improver additive aluminum oxide C1.7 part.
The preparation method of the described imitative metal art-type powder coatings of the present embodiment comprises the steps:
(1) mix according to selected parts by weight extracting epoxy resin and phenolic hydroxyl group resin curing agent, flow 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, sieving obtains required epoxy particles system, standby;
(2) get FEVE resin, Blocked Isocyanate Curing Agents and flow agent, 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;
(3) get respectively according to the ratio of ratio of weight and number 4.5:5.5 the fluorocarbon resin granular system that obtains in the epoxy particles system that obtains in step (1) and step (2) 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.
Embodiment 6
The described imitative metal art-type powder coatings of the present embodiment 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:
Bisphenol A type epoxy resin NPES-903 and replace the dicy-curing agent CASAMID 710 of company (the THOMAS SWAN) and amount to 35 parts;
2 parts of the polyether oligomers of flow agent-acid amides modification;
0.2 part of color stuffing, 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 4:3;
12 parts of auxiliary agent A, described auxiliary agent A comprise edge coverage power properties-correcting agent Kuraray
Mowital3.5 part, curing catalyst BASF2-MI2.5 part, wetting dispersing agent THIXATROL
ST2.5 part, flow promotor aluminum oxide C3.5 part.
Described fluorocarbon resin granular system is comprised of the component of following weight part:
FEVE resin and biuret polyisocyanate solidifying agent Bayer crelan
80 parts of EF403;
1.5 parts of flow agent PV88.
The preparation method of the described imitative metal art-type powder coatings of the present embodiment comprises the steps:
(1) mix according to selected parts by weight extracting epoxy resin and dicy-curing agent, flow agent PV88 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, powder obtains required epoxy particles system, and is standby;
(2) get FEVE resin, solidifying agent Degussa VESTAGONB1530 and flow 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;
(3) 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 (1) and step (2) 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 5.In whole coating, the demixing phenomenon of epoxy resin and fluorocarbon resin is very unobvious, causes both spaced apart and not obvious, and the effect of the imitative metal of formation is also not obvious.Therefore, the coating of this originating party case formation is all obviously not as the effect in previous embodiment 1-5 on layering sharpness or imitative metal effect.
Embodiment 7
The described imitative metal art-type powder coatings of the present embodiment 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:
(KUKD OKD-420 amounts to 110 parts for novolac epoxy (KUKDO YDPN series) and phenolic hydroxyl group resin curing agent;
0.2 part of the polyether oligomers of flow agent-acid amides modification;
70 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 P67;
12 parts of auxiliary agent B, described auxiliary agent B comprise 2 parts of air release agent st-yraxes, 2 parts of brightening agent 701 auxiliary agents, antioxidant KY-10102 part, photostabilizer Ciba
TINUVIN
1442 parts, UV absorption agent Ciba
TINUVIN
2 parts of 9282 parts and flow improver additive aerosils.
The preparation method of the described imitative metal art-type powder coatings of the present embodiment comprises the steps:
(1) mix according to selected parts by weight extracting epoxy resin and phenolic hydroxyl group resin curing agent, flow agent and color stuffing 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, sieving obtains required epoxy particles system, standby;
(2) get FEVE resin, biuret polyisocyanate solidifying agent, flow 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;
(3) 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 (1) and step (2) 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.By the resulting coating result of sem observation as shown in Figure 6.In whole coating, the demixing phenomenon of epoxy resin and fluorocarbon resin is very unobvious, causes both spaced apart and not obvious, and the effect of the imitative metal of formation is also not obvious.Therefore, the coating of this originating party case formation is all obviously not as the effect in previous embodiment 1-5 on layering sharpness or imitative metal effect.
Comparative Examples 1
Feed composition given in the selected component of technology 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, obtains required powder coating after powder sieves.
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, under 100 μ m scales, result as shown in Figure 7.
as shown in Figure 7, obvious separation surface (air interface when in figure, color darker part in top is test) does not appear in whole figure layer, as seen each component is not directly produced phenomenon of phase separation according to the figure layer that the preparation method of powder coating obtains, fluorocarbon resin and epoxy resin mixed distribution, when making epoxy resin be exposed in air, the epoxy resin denaturalization phenomenon can appear, make whole figure layer time limit of service be subject to significant restrictions on the one hand, can't utilize simultaneously flow agent to make epoxy resin and fluorocarbon resin produce the video picture of interval layering, can't form the effect of imitative metal.
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; make simultaneously the color of epoxy resin and fluorocarbon resin form visual effect and the texture of imitating metal; realization is not in the situation that add the effect that metal-powder forms imitative metal; not only avoided the perishable short-life problem that comes off of metal powder coating itself; simultaneously under the protection of fluorocarbon resin; the effect that not only has imitative metal, stable performance simultaneously.Carry out anticorrosion and the weather resistance detection to the formed figure layer of previous embodiment 1-5, confirm that imitative metal art-type powder coatings of the present invention meets the technical requirement in following table 2:
The Performance Detection index of table 2 figure layer
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. an imitative metal art-type powder coatings, is characterized in that: comprise
Ratio of weight and number is epoxy particles system and the fluorocarbon resin granular system of 6-4:4-6; Described epoxy particles system comprises that the component of following weight part forms:
Epoxy resin and adaptive solidifying agent A 40-98.7 part;
Flow agent A 0.5-2 part;
Color stuffing 0.8-60 part;
Auxiliary agent A 2-10 part;
Described fluorocarbon resin granular system comprises that the component of following weight part forms:
Fluorocarbon resin and adaptive solidifying agent B87-99.3 part;
Flow agent B0.7-1.5 part;
Auxiliary agent B 0.5-10 part.
2. imitative metal art-type powder coatings according to claim 1 is characterized in that: described epoxy particles system comprises that the component of following weight part forms:
Epoxy resin and adaptive solidifying agent A80 part;
1.5 parts of flow agent A;
13.2 parts of color stuffings;
3.8 parts of auxiliary agent A;
Described fluorocarbon resin granular system comprises that the component of following weight part forms:
Fluorocarbon resin and adaptive solidifying agent B96.7 part;
1 part of flow agent B;
2.3 parts of auxiliary agent B.
3. imitative metal art-type powder coatings 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 5.5-4.5:4.5-5.5.
4. imitative metal art-type powder coatings according to claim 3 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 imitative metal art-type powder coatings is characterized in that:
Described epoxy resin is bisphenol A type epoxy resin and/or novolac epoxy.
6. imitative metal art-type powder coatings 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 imitative metal art-type powder coatings is characterized in that:
Described flow agent A is the polyether oligomers of acid amides modification.
8. imitative metal art-type powder coatings according to claim 7 is characterized in that:
Described flow agent B is the acrylic acid or the like flow agent.
9. a method for preparing the arbitrary described imitative metal art-type powder coatings of claim 1-8, is characterized in that, comprises the steps:
(1) get after described epoxy resin and adaptive solidifying agent A, flow 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 are sieved and obtained required epoxy particles system, and be standby;
After each component of (2) getting described fluorocarbon resin and adaptive solidifying agent B, flow agent B 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 are sieved and obtained required fluorocarbon resin granular system, and be standby;
(3) get respectively according to selected ratio of weight and number the fluorocarbon resin granular system that obtains in the epoxy particles system that obtains in step (1) and step (2) and be dry mixed evenly, and get final product.
10. an imitative metal fine arts type powder coating, is characterized in that, the arbitrary described imitative metal art-type powder coatings of claim 1-8 sprayed and solidify to obtain.
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Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105255322A (en) * | 2015-11-20 | 2016-01-20 | 福州皇家地坪有限公司 | Epoxy drawn grain anticorrosive floor |
| CN105778728A (en) * | 2014-12-19 | 2016-07-20 | 立邦工业涂料(上海)有限公司 | Hammer paint and preparation method thereof |
| CN111892860A (en) * | 2020-08-05 | 2020-11-06 | 陕西蓝晟新材料研发有限公司 | Energy-storage luminous powder coating and production construction method |
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Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105778728A (en) * | 2014-12-19 | 2016-07-20 | 立邦工业涂料(上海)有限公司 | Hammer paint and preparation method thereof |
| CN105778728B (en) * | 2014-12-19 | 2018-08-28 | 立邦工业涂料(上海)有限公司 | A kind of hammer paint and preparation method thereof |
| CN105255322A (en) * | 2015-11-20 | 2016-01-20 | 福州皇家地坪有限公司 | Epoxy drawn grain anticorrosive floor |
| CN111892860A (en) * | 2020-08-05 | 2020-11-06 | 陕西蓝晟新材料研发有限公司 | Energy-storage luminous powder coating and production construction method |
Also Published As
| Publication number | Publication date |
|---|---|
| CN103146288B (en) | 2015-06-17 |
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