CN103146288B - 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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- CN103146288B CN103146288B CN201310108955.4A CN201310108955A CN103146288B CN 103146288 B CN103146288 B CN 103146288B CN 201310108955 A CN201310108955 A CN 201310108955A CN 103146288 B CN103146288 B CN 103146288B
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- 229910052751 metal Inorganic materials 0.000 title claims abstract description 68
- 239000002184 metal Substances 0.000 title claims abstract description 68
- 238000002360 preparation method Methods 0.000 title description 11
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- FLPKSBDJMLUTEX-UHFFFAOYSA-N bis(1,2,2,6,6-pentamethylpiperidin-4-yl) 2-butyl-2-[(3,5-ditert-butyl-4-hydroxyphenyl)methyl]propanedioate Chemical compound C1C(C)(C)N(C)C(C)(C)CC1OC(=O)C(C(=O)OC1CC(C)(C)N(C)C(C)(C)C1)(CCCC)CC1=CC(C(C)(C)C)=C(O)C(C(C)(C)C)=C1 FLPKSBDJMLUTEX-UHFFFAOYSA-N 0.000 description 2
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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 current art-type powder coatings mainly contains sand streak, wrinkle, tangerine line, mallear stria, metallic equivalent fruit kind.The art-type powder coatings effect using pearly-lustre, metal and various texture agent to make is gorgeous or simple and unsophisticated, there is good exterior decorative effect, the required various decorative effect of people can be met, and be day by day 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 decoration.Metal powder coating wherein can show a kind of bright, luxurious decorative effect due to it, and fashionable appearance is attractive in appearance, is applicable to very much the spraying of the indoor outer objects such as household, ornaments and automobile.
The metallic pigment that can be applied to metal powder coating at present have many kinds, are divided into four classes substantially, i.e. aluminium silver powder pigment, pearly pigment, Cu-Zn alloy powder 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 the particle diameter due to the metallic pigment added is less makes it at the extexine extruding and be often in dispersion process coating, therefore namely the greatest problem that metal powder coating exists is because metallic pigment and air catalytic oxidation cause metal powder coating not wear-resisting, the unstable that easy wiping falls, it is the dry mix that mainly adopts of current domestic and international market or Bang Dingfa technique all can not thoroughly address this problem, the unique method of current head it off figure for spray layer of transparent coating on metal-powder film, material and painting cost is not only made to increase, and too increase 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 there is being separated of metallic pigment and end powder in spraying, cause coating that the problems such as mill flower occur, also bring an a lot of difficult problem to spray coating constructing technique.And these metallic pigment exist environmental pollution mostly, special in the also easy firing blast of aluminium silver powder, give production, store, transport and bring many hidden danger.
Summary of the invention
For this reason, technical problem to be solved by this invention is that in prior art, oxidizable, the easy wiping of metal powder coating falls, unstable problem, and then provides a kind of art-type powder coatings with imitative metal effect;
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;
Present invention also offers the method preparing above-mentioned powder coating;
Further, present invention also offers a kind of coating 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 containing epoxy resin, adaptive solidifying agent A and flow agent A and the fluorocarbon resin granular system containing fluorocarbon resin, adaptive solidifying agent B and 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 the component composition of following weight part:
Solidifying agent A 40-98.7 part of epoxy resin and adaptation;
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 the component composition of following weight part:
Solidifying agent B 87-99.3 part of fluorocarbon resin and adaptation;
Flow agent B 0.7-1.5 part;
Auxiliary agent B 0.5-10 part.
Preferably, described epoxy particles system comprises the component composition of following weight part:
The solidifying agent A of epoxy resin and adaptation 80 parts;
Flow agent A 1.5 parts;
Color stuffing 13.2 parts;
Auxiliary agent A 3.8 parts;
Described fluorocarbon resin granular system comprises the component composition of following weight part:
The solidifying agent B of fluorocarbon resin and adaptation 96.7 parts;
Flow agent B 1 part;
Auxiliary agent B 2.3 parts.
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.
Be not quite similar due to the specification of prior art epoxy resin and equivalent value, therefore, the mode of stop collar epoxy resins and adaptive solidifying agent total amount is adopted to limit herein, those skilled in the art can carry out calculating selection according in prior art for the basic ratio of epoxy resin and solidifying agent, as long as make the cooperation of epoxy resin and solidifying agent reach solidification object, be generally advisable with the ratio 90-95:5-10 of epoxy resin and solidifying agent.
Described epoxy resin is the mixture of one or more 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), subotituted dicyardiamide (CASAMID 710 of THOMAS SWAN company), hydrazides (ADH), phenolic hydroxyl group resin (KUKDO KD-420) or terminal carboxyl polyester (DSM Uralac
p5980) mixture of one or more in, without the need to adding any auxiliary agent improving coating result again.
Described fluorocarbon resin is FEVE resin or trifluorochloroethylene-alkyl vinyl ether copolymerized fluorocarbon resin, mainly contain Orica powder coating company of New Zealand, Daikin company and Japan AGC company abroad to produce, domestic mainly Dalian shakes nation E-CTFE, preferred Japan AGC Lumiflon 710, described solidifying agent B is that the isocyanates solidifying agent of routine is 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, are generally advisable with the ratio 80:20 of fluorocarbon resin and solidifying agent.
Described flow agent A is the polyether oligomers such as powdermate of amide modifications
486cfl.
Described flow agent B is acrylic acid or the like flow agent, as GLP588, PV88, P67, P200 etc.
Described color stuffing comprises pigment and filler, and can carry out selection according to color stuffing common in this area and add, further, described filler comprises barium sulfate if W-44HB, aluminium hydroxide are as Portafill
a40 nepheline syenite is as minex-10 etc., and described pigment comprises titanium dioxide CR826, Carbon Black 330 R, iron oxide red Bayferrox
180m, yellow pigment, if Permanent Yellow DHG, phthalocyanine are if GNM, blue pigment are as the coloring materials such as 10446, for bottom without particular requirement, but select 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) mixture of one or more, in flow promotor (aerosil or aluminum oxide C), any auxiliary agent improving coatingsurface effect can not add.
Described auxiliary agent B comprises the mixture of one or more 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, and brightening agent is 701 auxiliary agents preferably; 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 is 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 commercial components each in prior art and the processability of metallic paint requires to determine.
Present invention also offers a kind of method preparing above-mentioned imitative metal art-type powder coatings, comprise the steps:
(1) get solidifying agent A, the flow agent A of described epoxy resin and adaptation, color stuffing and auxiliary agent A according to selected parts by weight to mix and after being uniformly dispersed, extruded by forcing machine, compressing tablet, pulverize after cooling, powder sieves and obtains required epoxy particles system, for subsequent use;
(2) each component of solidifying agent B, the flow agent B and auxiliary agent B granular system that get described fluorocarbon resin and adaptation according to selected parts by weight mixes and after being uniformly dispersed, extruded by forcing machine, compressing tablet, pulverize after cooling, powder sieves and obtains required fluorocarbon resin granular system, for subsequent use;
(3) get according to selected ratio of weight and number the fluorocarbon resin granular system obtained in the epoxy particles system and step (2) obtained in step (1) to be respectively dry mixed evenly, to obtain final product.
In described step (1) and described step (2), the temperature of described extrusion step is 80-150 DEG C.
In described step (1) and described step (2), the powder particle diameter of described pulverising step is 30-50 μm.
Present invention also offers a kind of imitative metal art-type powder coatings prepared according to aforesaid method.
Present invention also offers a kind of imitative metal fine arts type powder coating, is described imitative metal art-type powder coatings is sprayed and solidified obtain.
Described solidification value is 180-250 DEG C.
Epoxy powder coating is that using at most in powder coating is also most widely used one, and this is mainly because epoxy resin has good wettability, can follow the attachment of most ground bonding,
But its a most important shortcoming be exactly under ultraviolet effect paint film structure can be destroyed, antiseptic property can be lost very soon, therefore can not use out of doors, and simple outdoor powder coating systems can not play rot-resistant effect and have good adhesive property.
Fluorocarbon resin is through modification, a kind of new coating material of processing on fluoro-resin basis, and its principal feature is that its bond energy is 116kal/mol, in all chemical bonds, can be rated as first containing a large amount of F-C keys in resin.Even if being heated, under the effect of light (comprising ultraviolet), F-C key is difficult to fracture, and therefore 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 popular on the market at present urethane, organosilicon, acrylic resin paint material, especially, in the environment of heavily contaminated, deep-etching, the barrier propterty that it is superior is more shown.
But in view of the bonding wettability of fluorocarbon resin and ground to be coated is unsatisfactory, therefore, in prior art, develop the powder coating of conbined usage epoxy resin and fluorocarbon resin, learnt from other's strong points to offset one's weaknesses to the two advantage to be combined.But, also known in practical study, when the technique adopting the method preparing powder coating conventional in prior art and direct mixing to extrude pulverizing is again prepared, that bottom or surface layer are all dispersed with epoxy resin and fluorocarbon resin in coating, and the epoxy resin being in top layer is also still subject to ultraviolet impact and cannot uses out of doors, also sacrifice the weather resistance of fluorocarbon resin simultaneously, therefore mentioned in program coating is mainly used in the use that also can only be applied to pipeline corrosion protection, is still 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 owing to introducing epoxy and fluorocarbon resin in system, and by the technique that extrusion molding is pulverized again respectively, epoxy resin and the in type state of fluorocarbon resin are dry mixed, take full advantage of epoxy resin and the very big uncompatibility that cause different from the surface level of fluorocarbon resin, in the process of coating curing, form phenomenon of phase separation; Be easy to floating to coating top layer because fluorocarbon resin surface energy is lower, form transparent protective membrane supercoat, and the superpower weather resistance due to fluorocarbon resin ensures that coating has corrosion-resistant, the performance such as acid and alkali-resistance and UV resistant, reach and coating is not damaged, can be used for the use of exterior decoration; And epoxy resin is sink to coating bottom due to larger surface energy and bonds preferably by its excellent wetting and adhesion property and ground to be sprayed simultaneously, also protection base material and rot-resistant effect is served, and the present invention utilizes uncompatibility and the phenomenon of phase separation of flow agent and epoxy resin and fluorocarbon resin, epoxy resin and fluorocarbon resin is made to produce the layering video picture at interval, because fluorocarbon resin is transparent, namely create light and dark visual effect separately with the color of epoxy resin, reach the effect of imitative metal; Whole layer appears as three-dimensional profile depth and texture, and strengthen metal sense by enhancing contrast ratio, the degree of depth, tone, color and color and luster, the size of texture is controlled by the flow agent consumption of different coating;
2, powder coating of the present invention is by rationally arranging the weight part ratio of each component comprising resin, solidifying agent and flow agent and auxiliary agent, by organic cooperation of each component optimum, described epoxy-resin systems and described fluorocarbon resin system is made to produce obvious demixing phenomenon, flow agent is utilized to make the two once interval layering, make the powder coating obtained produce the effect of imitative metal, and there is fabulous stability and weathering resistance;
3, powder coating of the present invention, described epoxy particles system and described fluorocarbon resin granular system manufacture with 1:1 mixing, the two is formed with equal proportion and is separated, make bonding and provide protection reach balance, save cost;
4, the imitative metal art-type powder coatings made 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 is greater than 1000 hours, and acid salt fog is greater than 1000 hours, and neutral salt spray is greater than 2000 hours, natural exposure 1 year is non-foaming, do not ftracture, do not peel off, not efflorescence, and metal sense keeps good;
5, the present invention brings the effect of three-dimensional coating by being separated of different components, does not add the effect that namely metallic pigment reach imitative metal, avoids the technical barrier that metal powder coating is oxidizable simultaneously;
6, one of the present invention imitates metal art-type powder coatings, and be a kind of novel texture structure, have imitative metal effect simultaneously, spray the article of powder coating of the present invention, appearance of coat decorative effect is excellent, and concave-convex sense is strong, and between batch, product stability is strong.And durable in use, be very applicable to high-grade furnishing fields.Using method is simple, nontoxic, without dangerous, pollution-free, an application, operating efficiency is high.
Accompanying drawing explanation
In order to make content of the present invention be more likely to be clearly understood, 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 layer;
Fig. 2 is the electron microscope scanning figure of embodiment 2 gained layer;
Fig. 3 is the electron microscope scanning figure of embodiment 3 gained layer;
Fig. 4 is the electron microscope scanning figure of embodiment 4 gained layer;
Fig. 5 is the electron microscope scanning figure of embodiment 6 gained layer;
Fig. 6 is the electron microscope scanning figure of embodiment 7 gained layer;
Fig. 7 is the electron microscope scanning figure of comparative example 1 gained layer;
In figure, Reference numeral is expressed as: 1-fluorocarbon resin layer, 2-epoxy resin layer, 3-separation surface.
Embodiment
Embodiment 1
Imitative metal art-type powder coatings described in the present embodiment comprises epoxy particles system that ratio of weight and number is 1:1 and fluorocarbon resin granular system and is dry mixed and obtains.
Described epoxy particles system is made up of the component of following weight part:
Bisphenol A type epoxy resin (E-12) and dicy-curing agent (DYHARD
100S) totally 80 parts;
The polyether oligomers of flow agent-amide modifications 1.5 parts;
Color stuffing 13.2 parts, comprise pigment and filler, described filler selects barium sulfate as W-44HB, titanium dioxide CR826 selected by described pigment, wherein said pigment and filler can add setting according to those skilled in the art to the demand of product, and the adding proportion of pigment described in the present embodiment and described filler is 1:1;
Auxiliary agent A 3.8 parts, described auxiliary agent A comprises 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 made up of the component of following weight part:
FEVE resin and isocyanates solidifying agent Degussa VESTAGON B1530 totally 96.7 parts;
Flow agent GLP5881 part;
Auxiliary agent B 2.3 parts, described auxiliary agent B comprises antioxidant KY-10100.5 part, photostabilizer Ciba
tINUVIN
1440.5 parts, UV absorption agent Ciba
tINUVIN
9280.5 parts and flow improver additive aerosil 0.8 part.
The preparation method of the imitative metal art-type powder coatings described in the present embodiment comprises the steps:
(1) to mix according to selected parts by weight extracting epoxy resin and dicy-curing agent, flow agent and color stuffing and auxiliary agent A and after being uniformly dispersed, by powder coating extruder in 80-150 DEG C extrude, compressing tablet, being crushed to particle diameter after being cooled to room temperature is 30-50 μm, obtain required epoxy particles system, for subsequent use;
(2) FEVE resin, solidifying agent Degussa VESTAGONB1530 and flow agent and described various auxiliary agent is got according to selected parts by weight, to mix and after being uniformly dispersed, extruded by powder coating extruder 80-150 DEG C, compressing tablet, being crushed to particle diameter after being cooled to room temperature is 30-50 μm, powder sieves and obtains required fluorocarbon resin granular system, for subsequent use;
(3) get the fluorocarbon resin granular system obtained in the epoxy particles system and step (2) obtained in step (1) respectively according to the ratio of ratio of weight and number 1:1 to be dry mixed evenly, sieve and get final product.
The powder coating prepared in the present embodiment is adopted the method spraying of high pressure electrostatic painting conventional in prior art, within 20 minutes, obtain coating in 180-200 DEG C of solidification.By described coating epoxy resin embedding, use microtome afterwards, metal spraying after polishing, and by the coating that (lower same) under sem observation 50 μm of visuals field obtains, result as shown in Figure 1.
As can be seen from the figure, having there is self demixing phenomenon (with color application difference in scheming) in prepared coating, defines obvious separation surface 3 in the curing process.Known by carrying out detection to the content of F element, F element is all present in surface layer, and bottom is not completely containing F, as can be seen here, surface layer layer is the fluorocarbon resin layer 1 formed by fluorocarbon resin granular system, and bottom is then completely by the epoxy resin layer 2 of epoxy particles System forming.By means of the good wettability of epoxy resin; whole layer and bottom is made to have good adhesion effect; the antiseptic property of epoxy resin also makes whole layer have good antiseptic property simultaneously; and by means of the weather resistance of outer fluorocarbon resin layer, fabulous provide protection is played to whole layer and make whole layer not only can realize the use of outdoor decoration; and there is fabulous effect, and durable in use.Can see, 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 simultaneously.
Embodiment 2
Imitative metal art-type powder coatings described in the present embodiment comprises epoxy particles system that ratio of weight and number is 6:4 and fluorocarbon resin granular system and is dry mixed and obtains.
Described epoxy particles system is made up of the component of following weight part:
Bisphenol A type epoxy resin NPES-903 and totally 40 parts, subotituted dicyardiamide solidifying agent (CASAMID 710 of THOMAS SWAN company);
The polyether oligomers of flow agent-amide modifications 2 parts;
Color stuffing 0.8 part, comprises pigment and filler, and described filler selects aluminium hydroxide as Portafill
a40, Carbon Black 330 R selected by described pigment, and wherein said pigment and filler can add setting according to those skilled in the art to the demand of product, and the adding proportion of pigment described in the present embodiment and described filler is 2:1;
Auxiliary agent A 10 parts, described auxiliary agent A comprises 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 made up of the component of following weight part:
FEVE resin and biuret polyisocyanate solidifying agent Bayer crelan
eF403 87 parts;
Flow agent PV88 1.5 parts;
Auxiliary agent B 0.5 part, described auxiliary agent B comprises antioxidant (KY-1010) 0.2 part, photostabilizer (Ciba
tINUVIN
144) 0.2 part, UV absorption agent (Ciba
tINUVIN
928) 0.1 part.
The preparation method of the imitative metal art-type powder coatings described in the present embodiment comprises the steps:
(1) to mix according to selected parts by weight extracting epoxy resin and dicy-curing agent, color stuffing, flow agent PV88 and auxiliary agent A and after being uniformly dispersed, by powder coating extruder in 80-150 DEG C extrude, compressing tablet, being crushed to particle diameter after being cooled to room temperature is 30-50 μm, powder obtains required epoxy particles system, for subsequent use;
(2) FEVE resin, solidifying agent Degussa VESTAGONB1530 and flow agent and auxiliary agent B is got according to selected parts by weight, to mix and after being uniformly dispersed, extruded by powder coating extruder 80-150 DEG C, compressing tablet, being crushed to particle diameter after being cooled to room temperature is 30-50 μm, powder sieves and obtains required fluorocarbon resin granular system, for subsequent use;
(3) get the fluorocarbon resin granular system obtained in the epoxy particles system and step (2) obtained in step (1) respectively according to the ratio of ratio of weight and number 6:4 to be dry mixed evenly, sieve and get final product.
The powder coating prepared in the present embodiment is adopted the method spraying of high pressure electrostatic painting conventional in prior art, within 20 minutes, obtain coating in 200-220 DEG C of solidification.By the coating that sem observation obtains, as shown in Figure 2, in whole layer, fluorocarbon resin layer and epoxy resin layer still create obvious separation surface to result.
Embodiment 3
Imitative metal art-type powder coatings described in the present embodiment comprises epoxy particles system that ratio of weight and number is 4:6 and fluorocarbon resin granular system and is dry mixed and obtains.
Described epoxy particles system is made up 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;
The polyether oligomers of flow agent-amide modifications 0.5 part;
Color stuffing 60 parts, comprises pigment and filler, and described filler selects aluminium hydroxide as Portafill
a40, Carbon Black 330 R selected by described pigment, and wherein said pigment and filler can add setting according to those skilled in the art to the demand of product, and the adding proportion of pigment described in the present embodiment and described filler is 1:2;
Auxiliary agent A 2 parts, described auxiliary agent A comprises edge coverage power properties-correcting agent (Kuraray
mowital) 0.5 part, curing catalyst (BASF2-MI) 0.5 part, wetting dispersing agent (THIXATROL
sT) 0.3 part, flow promotor aluminum oxide C0.7 part
Described fluorocarbon resin granular system is made up of the component of following weight part:
FEVE resin and 99.3 parts, biuret polyisocyanate solidifying agent;
Flow agent P67 0.7 part;
Auxiliary agent B 10 parts, described auxiliary agent B comprises air release agent st-yrax 1.5 parts, brightening agent 701 auxiliary agent 2 parts, antioxidant KY-10101.5 part, photostabilizer Ciba
tINUVIN
1442 parts, UV absorption agent Ciba
tINUVIN
9281.5 parts and flow improver additive aerosil 1.5 parts.
The preparation method of the imitative metal art-type powder coatings described in the present embodiment comprises the steps:
(1) to 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 after being uniformly dispersed, by powder coating extruder in 80-150 DEG C extrude, compressing tablet, being crushed to particle diameter after being cooled to room temperature is 30-50 μm, sieve and obtain required epoxy particles system, for subsequent use;
(2) FEVE resin, biuret polyisocyanate solidifying agent, flow agent and auxiliary agent B is got according to selected parts by weight, to mix and after being uniformly dispersed, extruded by powder coating extruder 80-150 DEG C, compressing tablet, being crushed to particle diameter after being cooled to room temperature is 30-50 μm, powder sieves and obtains required fluorocarbon resin granular system, for subsequent use;
(3) get the fluorocarbon resin granular system obtained in the epoxy particles system and step (2) obtained in step (1) respectively according to the ratio of ratio of weight and number 4:6 to be dry mixed evenly, sieve and get final product.
The powder coating prepared in the present embodiment is adopted the method spraying of high pressure electrostatic painting conventional in prior art, within 20 minutes, obtain coating in 180-200 DEG C of solidification.By the coating that sem observation obtains, as shown in Figure 3, in whole layer, fluorocarbon resin layer and epoxy resin layer still create obvious separation surface to result.
Embodiment 4
Imitative metal art-type powder coatings described in the present embodiment comprises epoxy particles system that ratio of weight and number is 5.5:4.5 and fluorocarbon resin granular system and is dry mixed and obtains.
Described epoxy particles system is made up of the component of following weight part:
Novolac epoxy (KUKDO YDPN series) and terminal carboxyl polyester (DSM Uralac
p5980 amounts to 60 parts;
The polyether oligomers of flow agent-amide modifications 1 part;
Color stuffing 8.5 parts, comprises pigment and filler, and described filler selects nepheline syenite as minex-10, and iron oxide red Bayferrox selected by described pigment
180m, wherein said pigment and filler can add setting according to those skilled in the art to the demand of product, and the adding proportion of pigment described in the present embodiment and described filler is 3:2;
Auxiliary agent A 2 parts, described auxiliary agent A comprises edge coverage power properties-correcting agent Kuraray
mowital0.5 part, curing catalyst BASF2-MI0.5 part, wetting dispersing agent THIXATROL
sT0.5 part, flow promotor aerosil 0.5 part;
Described fluorocarbon resin granular system is made up of the component of following weight part:
FEVE resin and Blocked Isocyanate Curing Agents (Degussa VESTAGON B1530) 93 parts;
Flow agent P200 0.8 part;
Auxiliary agent B 1.2 parts, described auxiliary agent B comprises air release agent micro mist wax 0.2 part, brightening agent 701 auxiliary agent 0.2 part, ethylene waxes 0.2 part, Poly Propylene Wax 0.1 part, antioxidant KY-10100.1 part, photostabilizer Ciba
tINUVIN
1440.2 parts, UV absorption agent Ciba
tINUVIN
9280.1 parts and flow improver additive aluminum oxide C0.1 part.
The preparation method of the imitative metal art-type powder coatings described in the present embodiment comprises the steps:
(1) to 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 after being uniformly dispersed, by powder coating extruder in 80-150 DEG C extrude, compressing tablet, being crushed to particle diameter after being cooled to room temperature is 30-50 μm, sieve and obtain required epoxy particles system, for subsequent use;
(2) FEVE resin, Blocked Isocyanate Curing Agents and flow agent, auxiliary agent B is got according to selected parts by weight, to mix and after being uniformly dispersed, extruded by powder coating extruder 80-150 DEG C, compressing tablet, being crushed to particle diameter after being cooled to room temperature is 30-50 μm, powder sieves and obtains required fluorocarbon resin granular system, for subsequent use;
(3) get the fluorocarbon resin granular system obtained in the epoxy particles system and step (2) obtained in step (1) respectively according to the ratio of ratio of weight and number 5.5:4.5 to be dry mixed evenly, sieve and get final product.
The powder coating prepared in the present embodiment is adopted the method spraying of high pressure electrostatic painting conventional in prior art, within 20 minutes, obtain coating in 220-250 DEG C of solidification.By the coating that sem observation obtains, as shown in Figure 4, in whole layer, fluorocarbon resin layer and epoxy resin layer still create obvious separation surface to result.
Embodiment 5
Imitative metal art-type powder coatings described in the present embodiment comprises epoxy particles system that ratio of weight and number is 4.5:5.5 and fluorocarbon resin granular system and is dry mixed and obtains.
Described epoxy particles system is made up of the component of following weight part:
Bisphenol A type epoxy resin (E-12) and hydrazides (ADH) amount to 90 parts;
The polyether oligomers of flow agent-amide modifications 1.8 parts;
Color stuffing 37 parts, comprise pigment and filler, described filler selects barium sulfate as W-44HB, yellow pigment Permanent Yellow DHG selected by described pigment, wherein said pigment and filler can add setting according to those skilled in the art to the demand of product, and the adding proportion of pigment described in the present embodiment and described filler is 2:3;
Auxiliary agent A 7.1 parts, described auxiliary agent A comprises edge coverage power properties-correcting agent Kuraray
mowital0.75 part, curing catalyst BASF2-MI1.75 part, wetting dispersing agent THIXATROL
sT2.5 part, flow promotor aerosil 2.1 parts;
Described fluorocarbon resin granular system is made up of the component of following weight part:
FEVE resin and Blocked Isocyanate Curing Agents (Bayer crelan
nW-5) 98.1 parts;
Flow agent GLP588 1.2 parts;
Auxiliary agent B 6.2 parts, described auxiliary agent B comprises air release agent micro mist wax 0.5 part, brightening agent 701 auxiliary agent 0.5 part, ethylene waxes 0.5 part, Poly Propylene Wax 0.5 part, antioxidant KY-10100.5 part, photostabilizer Ciba
tINUVIN
1440.5 parts, UV absorption agent Ciba
tINUVIN
9281.5 parts and flow improver additive aluminum oxide C1.7 part.
The preparation method of the imitative metal art-type powder coatings described in the present embodiment comprises the steps:
(1) to 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 after being uniformly dispersed, by powder coating extruder in 80-150 DEG C extrude, compressing tablet, being crushed to particle diameter after being cooled to room temperature is 30-50 μm, sieve and obtain required epoxy particles system, for subsequent use;
(2) FEVE resin, Blocked Isocyanate Curing Agents and flow agent, auxiliary agent B is got according to selected parts by weight, to mix and after being uniformly dispersed, extruded by powder coating extruder 80-150 DEG C, compressing tablet, being crushed to particle diameter after being cooled to room temperature is 30-50 μm, powder sieves and obtains required fluorocarbon resin granular system, for subsequent use;
(3) get the fluorocarbon resin granular system obtained in the epoxy particles system and step (2) obtained in step (1) respectively according to the ratio of ratio of weight and number 4.5:5.5 to be dry mixed evenly, sieve and get final product.
The powder coating prepared in the present embodiment is adopted the method spraying of high pressure electrostatic painting conventional in prior art, within 20 minutes, obtain coating in 180-200 DEG C of solidification.
Embodiment 6
Imitative metal art-type powder coatings described in the present embodiment comprises epoxy particles system that ratio of weight and number is 6:4 and fluorocarbon resin granular system and is dry mixed and obtains.
Described epoxy particles system is made up of the component of following weight part:
Bisphenol A type epoxy resin NPES-903 and subotituted dicyardiamide solidifying agent (CASAMID 710 of THOMAS SWAN company) amount to 35 parts;
The polyether oligomers of flow agent-amide modifications 2 parts;
Color stuffing 0.2 part, comprise pigment and filler, described filler selects barium sulfate as W-44HB, yellow pigment Permanent Yellow DHG selected by described pigment, wherein said pigment and filler can add setting according to those skilled in the art to the demand of product, and the adding proportion of pigment described in the present embodiment and described filler is 4:3;
Auxiliary agent A 12 parts, described auxiliary agent A comprises 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 made up of the component of following weight part:
FEVE resin and biuret polyisocyanate solidifying agent Bayer crelan
eF403 80 parts;
Flow agent PV88 1.5 parts.
The preparation method of the imitative metal art-type powder coatings described in the present embodiment comprises the steps:
(1) to mix according to selected parts by weight extracting epoxy resin and dicy-curing agent, flow agent PV88 and auxiliary agent A and after being uniformly dispersed, by powder coating extruder in 80-150 DEG C extrude, compressing tablet, being crushed to particle diameter after being cooled to room temperature is 30-50 μm, powder obtains required epoxy particles system, for subsequent use;
(2) FEVE resin, solidifying agent Degussa VESTAGONB1530 and flow agent is got according to selected parts by weight, to mix and after being uniformly dispersed, extruded by powder coating extruder 80-150 DEG C, compressing tablet, being crushed to particle diameter after being cooled to room temperature is 30-50 μm, powder sieves and obtains required fluorocarbon resin granular system, for subsequent use;
(3) get the fluorocarbon resin granular system obtained in the epoxy particles system and step (2) obtained in step (1) respectively according to the ratio of ratio of weight and number 6:4 to be dry mixed evenly, sieve and get final product.
The powder coating prepared in the present embodiment is adopted the method spraying of high pressure electrostatic painting conventional in prior art, within 20 minutes, obtain coating in 200-220 DEG C of solidification.The coating result obtained by sem observation as shown in Figure 5.In whole coating, the demixing phenomenon of epoxy resin and fluorocarbon resin is very obvious, cause the two spaced apart and not obvious, the effect of the imitative metal of formation is also not obvious.Therefore, the coating of this schematic design making is all obviously not as the effect in previous embodiment 1-5 in layering sharpness or imitative metal effect.
Embodiment 7
Imitative metal art-type powder coatings described in the present embodiment comprises epoxy particles system that ratio of weight and number is 4:6 and fluorocarbon resin granular system and is dry mixed and obtains.
Described epoxy particles system is made up 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;
The polyether oligomers of flow agent-amide modifications 0.2 part;
Color stuffing 70 parts, comprise pigment and filler, described filler selects barium sulfate as W-44HB, and phthalocyanine GNM selected by described pigment, wherein said pigment and filler can add setting according to those skilled in the art to the demand of product, and the adding proportion of pigment described in the present embodiment and described filler is 3:4;
Described fluorocarbon resin granular system is made up of the component of following weight part:
FEVE resin and 110 parts, biuret polyisocyanate solidifying agent;
Flow agent P67 0.2 part;
Auxiliary agent B 12 parts, described auxiliary agent B comprises air release agent st-yrax 2 parts, brightening agent 701 auxiliary agent 2 parts, antioxidant KY-10102 part, photostabilizer Ciba
tINUVIN
1442 parts, UV absorption agent Ciba
tINUVIN
9282 parts and flow improver additive aerosil 2 parts.
The preparation method of the imitative metal art-type powder coatings described in the present embodiment comprises the steps:
(1) to mix according to selected parts by weight extracting epoxy resin and phenolic hydroxyl group resin curing agent, flow agent and color stuffing and after being uniformly dispersed, by powder coating extruder in 80-150 DEG C extrude, compressing tablet, being crushed to particle diameter after being cooled to room temperature is 30-50 μm, sieve and obtain required epoxy particles system, for subsequent use;
(2) FEVE resin, biuret polyisocyanate solidifying agent, flow agent and auxiliary agent B is got according to selected parts by weight, to mix and after being uniformly dispersed, extruded by powder coating extruder 80-150 DEG C, compressing tablet, being crushed to particle diameter after being cooled to room temperature is 30-50 μm, powder sieves and obtains required fluorocarbon resin granular system, for subsequent use;
(3) get the fluorocarbon resin granular system obtained in the epoxy particles system and step (2) obtained in step (1) respectively according to the ratio of ratio of weight and number 4:6 to be dry mixed evenly, sieve and get final product.
The powder coating prepared in the present embodiment is adopted the method spraying of high pressure electrostatic painting conventional in prior art, within 20 minutes, obtain coating in 180-200 DEG C of solidification.The coating result obtained by sem observation as shown in Figure 6.In whole coating, the demixing phenomenon of epoxy resin and fluorocarbon resin is very obvious, cause the two spaced apart and not obvious, the effect of the imitative metal of formation is also not obvious.Therefore, the coating of this schematic design making is all obviously not as the effect in previous embodiment 1-5 in layering sharpness or imitative metal effect.
Comparative example 1
The component selected by technology powder coating described in the present embodiment is identical with feed composition given in embodiment 3, its difference is only according to after the compositional selecting marked in embodiment 3, directly each component is mixed, and by powder coating extruder in 80-150 DEG C extrude, compressing tablet, being crushed to particle diameter after being cooled to room temperature is 30-50 μm, obtains required powder coating after powder sieves.
The powder coating obtained is adopted the method spraying of high pressure electrostatic painting conventional in prior art, within 20 minutes, obtain coating in 180-200 DEG C of solidification.By the coating that sem observation obtains, under 100 μm of scales, result as shown in Figure 7.
As shown in Figure 7, obvious separation surface (Air Interface when part that in figure, top color is darker is test) is there is not in whole layer, visible the layer that each component directly obtains according to the preparation method of powder coating is not produced phenomenon of phase separation, fluorocarbon resin and epoxy resin mixed distribution, when epoxy resin is exposed in air, there will be epoxy resin denaturalization phenomenon, on the one hand whole layer time limit of service is subject to significant restrictions, flow agent cannot be utilized to make epoxy resin and fluorocarbon resin produce the video picture of interval layering simultaneously, the effect of imitative metal cannot be formed.
Be labeled as coating A-G to above-described embodiment 1-7 gained coating, the coated marker obtained with comparative example 1 is H, and carries out anticorrosion and weather resistance test to above-mentioned coating, and concrete test index and performance perameter refer to following table 1:
The performance test of table 1 coating A-I
From upper table data, powder coating of the present invention is in use owing to can form the phenomenon be separated, the weather resistance fabulous by means of fluorocarbon resin 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 is by reasonably arranging its composition content, and its performance perameter is optimum; And its anticorrosion and weather resistance of the coating prepared with the method preparing powder coating in prior art is obviously weaker than scheme of the present invention.Visible; the coating that the mode be dry mixed with epoxy resin and fluorocarbon resin of the present invention is formed; the phenomenon of phase separation formed in the curing process not only contributes to the weather-proof of coating and antiseptic property; make the color of epoxy resin and fluorocarbon resin form visual effect and the texture of imitative metal simultaneously; realize the effect forming imitative metal when not adding metal-powder; not only avoid the perishable short-life problem that comes off of metal powder coating itself; simultaneously under the protection of fluorocarbon resin; not only there is the effect of imitative metal, stable performance simultaneously.Anticorrosion and weather resistance detection is carried out to the layer that previous embodiment 1-5 is formed, confirms 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 layer
Obviously, above-described embodiment is only for clearly example being described, and the restriction not 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 exhaustive without the need to also giving all embodiments.And thus the apparent change of extending out or variation be still 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 the component composition of following weight part:
Solidifying agent A 40-98.7 part of epoxy resin and adaptation;
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 the component composition of following weight part:
Solidifying agent B 87-99.3 part of fluorocarbon resin and adaptation;
Flow agent B 0.7-1.5 part;
Auxiliary agent B 0.5-10 part;
Described imitative metal art-type powder coatings is prepared as follows:
(1) get solidifying agent A, the flow agent A of described epoxy resin and adaptation, color stuffing and auxiliary agent A according to selected parts by weight to mix and after being uniformly dispersed, extruded by forcing machine, compressing tablet, pulverize after cooling, powder sieves and obtains required epoxy particles system, for subsequent use;
(2) each component of solidifying agent B, the flow agent B and auxiliary agent B granular system that get described fluorocarbon resin and adaptation according to selected parts by weight mixes and after being uniformly dispersed, extruded by forcing machine, compressing tablet, pulverize after cooling, powder sieves and obtains required fluorocarbon resin granular system, for subsequent use;
(3) get according to selected ratio of weight and number the fluorocarbon resin granular system obtained in the epoxy particles system and step (2) obtained in step (1) to be respectively dry mixed evenly, to obtain final product.
2. imitative metal art-type powder coatings according to claim 1, is characterized in that:
Described epoxy particles system comprises the component composition of following weight part:
The solidifying agent A of epoxy resin and adaptation 80 parts;
Flow agent A 1.5 parts;
Color stuffing 13.2 parts;
Auxiliary agent A 3.8 parts;
Described fluorocarbon resin granular system comprises the component composition of following weight part:
The solidifying agent B of fluorocarbon resin and adaptation 96.7 parts;
Flow agent B 1 part;
Auxiliary agent B 2.3 parts.
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. imitative metal art-type powder coatings according to claim 1, 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. the imitative metal art-type powder coatings according to claim 5 or 6, is characterized in that:
Described flow agent A is the polyether oligomers of amide modifications.
8. imitative metal art-type powder coatings according to claim 7, is characterized in that:
Described flow agent B is acrylic acid or the like flow agent.
9. prepare a method for the arbitrary described imitative metal art-type powder coatings of claim 1-8, it is characterized in that, comprise the steps:
(1) get solidifying agent A, the flow agent A of described epoxy resin and adaptation, color stuffing and auxiliary agent A according to selected parts by weight to mix and after being uniformly dispersed, extruded by forcing machine, compressing tablet, pulverize after cooling, powder sieves and obtains required epoxy particles system, for subsequent use;
(2) each component of solidifying agent B, the flow agent B and auxiliary agent B granular system that get described fluorocarbon resin and adaptation according to selected parts by weight mixes and after being uniformly dispersed, extruded by forcing machine, compressing tablet, pulverize after cooling, powder sieves and obtains required fluorocarbon resin granular system, for subsequent use;
(3) get according to selected ratio of weight and number the fluorocarbon resin granular system obtained in the epoxy particles system and step (2) obtained in step (1) to be respectively dry mixed evenly, to obtain final product.
10. an imitative metal fine arts type powder coating, is characterized in that, to be sprayed by arbitrary for claim 1-8 described imitative metal art-type powder coatings and solidify to obtain.
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| 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 |
| CN111892860B (en) * | 2020-08-05 | 2022-03-01 | 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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| US8691342B2 (en) * | 2011-02-03 | 2014-04-08 | The University Of Akron | Multi-phase self-stratifying coating exhibiting gradient behavior |
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| CN102206460A (en) * | 2011-02-28 | 2011-10-05 | 浙江吉利汽车研究院有限公司 | Flower and bird grain powder paint for automobile body finish and preparation method thereof |
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| CN103146288A (en) | 2013-06-12 |
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