CN104017480B - A kind of fluorine silication acroleic acid polyurethane coating and preparation, application process - Google Patents
A kind of fluorine silication acroleic acid polyurethane coating and preparation, application process Download PDFInfo
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Abstract
The present invention relates to protective coating technical field, particularly relate to a kind of fluorine silication acroleic acid polyurethane coating, including the raw material of following percentage by weight: Hydroxylated acrylic resin 50-70%, solvent 10-20%, fluorine-containing micropowder 0.1%-3%, pigment 1-5%, high rigidity oxide 1-3%, auxiliary agent 2-5%, Blocked Isocyanate Curing Agents 10-20%. The fluorine silication acroleic acid polyurethane coating of the present invention can improve the protective capacities to steel construction, there is good aging resistance, anti-scratch, anticorrosion, Anti-tarnishing, the feature such as anti-pollution, when the priming paint and middle paint that coordinate other function admirable use, can realizing the long-lasting protection performance that steel construction is fabulous, the protection life-span can reach 30 years.
Description
Technical field
The present invention relates to protective coating technical field, particularly relate to a kind of fluorine silication acroleic acid polyurethane coating.
Background technology
Along with steel construction application increasingly extensive, the protection question of steel construction is also affected by increasing concern. At present, both at home and abroad the anticorrosion of structural steelwork is studied and done a lot of work, such as use the coating that a kind of (such as zinc powder, cloud iron powder, aluminium powder) containing anticorrosive packing is higher as protective coating, or, a kind of compound protective coating etc. is constituted by anticorrosion priming paint and closing finish paint, the protection of steel construction is served certain effect by these measures, exposes some problems also. When such as steel construction being carried out anti-corrosion protection with one layer of zinc rich paint or high zinc paint, the requirement of substrate surface treatment is high, and zinc-rich coating or high zinc enamelled coating exposed outside, it is easy to damage and do not reach effect. And adopt epoxy as, when closing finish paint, using the time one long out of doors, and top layer epoxy resin easy-weathering, cause paint layer from surface to be left out gradually, and then make bottom rust preventive coating depart from matrix and cannot steel be protected, can't resolve the problem that protection lasts a long time.
Outdoor long-lasting protection coating generally requires that the coating protection life-span reaches more than 10a, belongs to long-lasting protection coating system, it is possible to applies under harsh applied environment and has long-acting service life. The length in coating protection life-span is mainly determined by following several respects: the kind of (1) coating material, quality;(2) Coating Pretreatment and coating construction process; (3) paint coating thickness (the coating number of plies).
For common heavy-duty coating system, it is generally adopted special zinc rich paint bottoming, micaceous iron oxide anchor coat is closed, acrylic polyurethane coating makes outermost layer finish paint, but adopt and still suffer from, during conventional finish paint, the problem that anti-corrosion life is permanent not, and impact resistance of coating is inadequate, ageing-resistant performance is low, be susceptible to metachromatism.
Summary of the invention
Present invention aims to the deficiencies in the prior art, a kind of fluorine silication acroleic acid polyurethane coating and preparation, application process are provided, this fluorine silication acroleic acid polyurethane coating can improve the protective capacities to steel construction, there is good aging resistance, anti-scratch, anticorrosion, Anti-tarnishing, the feature such as anti-pollution, when the priming paint and middle paint that coordinate other function admirable use, can realizing the long-lasting protection performance that steel construction is fabulous, the protection life-span can reach 30 years.
The present invention is achieved through the following technical solutions.
A kind of fluorine silication acroleic acid polyurethane coating, including the raw material of following percentage by weight:
Hydroxylated acrylic resin 50-70%
Solvent 10-20%
Fluorine-containing micropowder 0.1%-3%
Pigment 1-5%
High rigidity oxide 1-3%
Auxiliary agent 2-5%
Blocked Isocyanate Curing Agents 10-20%
Wherein, described solvent is one or more the mixture in the dimethylbenzene of processed, butyl ester, ethylene glycol ether acetate, nylon acid dimethyl ester, Glutaric Acid Dimethyl ester, adipic acid dimethyl ester and DAA;
Wherein, described fluorine-containing micropowder is ptfe micropowder, Kynoar micropowder, perfluoroethylene-propylene micropowder or polytetrafluoroethylmodified modified polyethylene micropowder;
Wherein, described pigment is one or more the mixture in titanium dioxide, white carbon black, iron oxide yellow, phthalocyanine blue, lemon yellow, iron oxide red, barba hispanica;
Wherein, described high rigidity oxide is one or more the mixture in zirconium oxide, magnesium oxide, silicon oxide, aluminium oxide and beryllium oxide;
Wherein, described Blocked Isocyanate Curing Agents is one or more the mixture in hexamethylene diisocyanate trimer, isophorone diisocyanate trimer and hexamethylene diisocyanate biruet.
Preferably, a kind of fluorine silication acroleic acid polyurethane coating, including the raw material of following percentage by weight:
Hydroxylated acrylic resin 50-65%
Solvent 10-20%
Fluorine-containing micropowder 0.5-2%
Pigment 2-5%
High rigidity oxide 1.5-2.5%
Auxiliary agent 2.5-4%
Blocked Isocyanate Curing Agents 12-17%.
Wherein, described Hydroxylated acrylic resin is hydroxy acrylate copolymer, and solid part is 59-62%, and proportion is 0.95-1.05g/cm3, viscosity is 5500-6500cp (25 DEG C), and acid value is 5-12mgKOH/g (100%), and hydroxyl value is 53-56mgKOH/g. The characteristic of hydroxy acrylate copolymer is that solid content is high, can Quick cross-linking, clarify thick liquid, hydroxyl value is 53-56mgKOH/g (stock solution), and the light resistance that can make is good, good weatherability, the film that heat-resist, chemical-resistant is strong.
Wherein, described solvent includes the raw material of following percentage by weight:
Dimethylbenzene 30-60%
Butyl ester 10-15%
Ethylene glycol ether acetate 5-20%
Nylon acid dimethyl ester 5-20%
Glutaric Acid Dimethyl ester 5-20%
Adipic acid dimethyl ester 5-20%
DAA 10-15%.
This mixed solvent can dissolve Hydroxylated acrylic resin and other auxiliary agent well, and boiling point has certain gradient, in dried coating film process, is of value to the curing molding of film.
Wherein, described pigment includes the raw material of following percentage by weight:
Titanium dioxide 90-99%
Pigment adjuvant 1-10%
Wherein, titanium dioxide is Rutile type titanium dioxide; Pigment adjuvant is one or more the mixture in white carbon black, iron oxide yellow, phthalocyanine blue, lemon yellow, iron oxide red, barba hispanica.
In conventional Chinese white, the relative density of titanium dioxide is minimum, and in the Chinese white of equal quality, the largest surface area of titanium dioxide, pigment volume concentration is the highest. The fusing point of rutile titanium dioxide is 1850 DEG C, fusing point in air be the fusing point in (1830 ± 15) DEG C, oxygen enrichment is 1879 DEG C, and fusing point is relevant with the purity of titanium dioxide. The boiling point of rutile titanium dioxide is (3200 ± 300) DEG C, at these elevated temperatures titanium dioxide slightly volatility. By Mohs' hardness ten point system scale, rutile titanium dioxide is 6～6.5.
The effect of the composite pigment of the present invention is that gloss retention is good, heat-resist, solvent resistance is good, it is easy to dispersion.
Wherein, described auxiliary agent includes the raw material of following percentage by weight:
Polysiloxane leveling agents 0.1-0.3%
Silicone based defoamer 0.1-1%
High-molecular type dispersing agent 0.5-1%
Polyester anti-flooding agent 0.1-1%
Benzotriazole UV absorbers 0.5-1%
Many methyl age resister 0.5-0.8%.
The raising that primarily serves the purpose of of auxiliary agent disperses levelling ability, hardness of paint film, anti-scratch intensity, froth breaking and presses down bubble ability, temp. variation resistant performance, color development power and Anti-tarnishing ability etc.
Described polysiloxane leveling agents is polydimethylsiloxane, poly-methyl alkyl siloxane or organic modified polyorganosiloxane. Described silicone based defoamer is the mixture of polymethyl siloxane, broken bubble polymer and siloxanes. Described high-molecular type dispersing agent is polyacrylate, modified polyurethane or polyamide. Described polyester anti-flooding agent is high molecular many chains polyester, Block copolymer, fatty acid modified polyester. Described UV absorbers is benzotriazole UV absorbers is 2-(2 '-hydroxyl-5 '-aminomethyl phenyl) BTA, 2-(2 '-hydroxyl-3 ', 5 '-two tertiary phenyl)-5-chlorination benzotriazole. Described many methyl age resister is 4-benzoyloxy-2,2,6,6-tetramethyl piperidines, HMPA.
Broken bubble polymer is a kind of outstanding froth breaking and deaeration agent, all can show the effect of excellence when producing and process coating, have the froth breaking of excellence, deaeration function.
A kind of preparation method of fluorine silication acroleic acid polyurethane coating, including following procedure of processing:
Step one, by component formula, be proportionally added into producing in tank by the Hydroxylated acrylic resin of 30-50% percentage by weight, solvent, pigment, high-molecular type dispersing agent, fluorine-containing powder material;
Step 2, when rotating speed is 1200-2000r/min disperse 10-20min;
Step 3, vertical sand milling or horizontal sand milling device is used to grind 4-5h;
Step 4, stopping are ground, add the Hydroxylated acrylic resin of 50-70% percentage by weight, high rigidity oxide, polysiloxane leveling agents, silicone based defoamer, polyester anti-flooding agent, benzotriazole UV absorbers, many methyl age resister, Blocked Isocyanate Curing Agents, dispersion 10-25min, filter, load in paint vehicle bucket, namely obtain fluorine silication acroleic acid polyurethane coating. After stopping grinding, add other auxiliary agents advantageously reduce auxiliary agent loss, improve production efficiency.
The application process of a kind of fluorine silication acroleic acid polyurethane coating, comprises the following steps:
The first step: steel construction base material is first carried out surface cleaning process, then base material is carried out sandblasting, ball blast or phosphatization;Be conducive to improving the adhesive force to base material and barrier propterty;
Second step: spraying zinc powder class primer coating on the steel that surface cleaning processes, its thickness is 80-120 μm;
3rd step: spray polyurethane inter coat on zinc powder class primer coating, its thickness is 40-80 μm;
4th step: spray fluorine silication acroleic acid polyurethane coating on polyurethane inter coat, its thickness is 80-120 μm;
5th step: under 130-160 DEG C of baking condition, solidifies 0.5-1 hour, makes curing of coating form coating.
Steel construction base material is played cathodic protection effect by the zinc powder on zinc powder class primer coating, and oxidized zinc powder forms zinc oxide or zinc hydroxide and persists in zinc powder class primer coating as a kind of filler. Dust primer in the dust primer coating of the present invention can be the zinc powder class priming paint such as inorganic zinc primer powder, zinc rich primer, organosilicon dust primer or epoxy resin dust primer. Zinc powder class primer coating is served a good closed protective performance by polyurethane inter coat, restrained effectively the dry linting of zinc powder class primer coating, is left out. What the polyurethane inter coat of the present invention adopted is the coating of polyurethane material. Double-component fluorine silication acroleic acid polyurethane coating, has Anti-tarnishing and aging resistance functional component, can stop the unfavorable factor destructions to coating such as the moisture in the external world, oxygen, and meanwhile, hardness of film is big, and anti-scratch, physical and mechanical properties is good, and adhesive force is strong.
The invention have the benefit that the physical and mechanical propertiess such as the adhesive force of fluorine silication acroleic acid polyurethane coating of the present invention, pliability, shock resistance are good, ageing resistance, anticorrosion, Scratch Resistance, resistance to soiling, hydrophobicity are excellent, it is typically used as the finish paint in long-lasting protection coating system, possesses aging resistance, anti-scratch, anticorrosion, Anti-tarnishing, the function such as anti-pollution. When the priming paint and middle paint that coordinate other function admirable use, it is possible to achieve the long-lasting protection performance that steel construction is fabulous, the protection life-span can reach 30 years. Testing result shows, the resistance to neutral salt spray test time of the coating of this fluorine silication acroleic acid polyurethane coating, coating was after the accelerated aging test of more than 2000h, and coating is without bubbling, without cracking, slight without delamination, variable color more than 2000h. The fluorine silication acroleic acid polyurethane coating of the present invention can be widely applied to the protection of indoor, outdoor steel structure, applied range, and protection effect is excellent.
1, the present invention is compared with other acroleic acid polyurethane coating, owing to adopting the pigment of high hydroxyl film forming matter and optimization to combine, and add aging resistance function additive, this coating, except having the adhesive force of excellence, pliability, impact strength, also has extremely strong ageing resistance and good Anti-tarnish property. The adhesive force of the fluorine silication acroleic acid polyurethane coating of the present invention is 0 grade, pliability is the deformation quantity of 1mm, impact strength >=500N × cm, the coating of fluorine silication acroleic acid polyurethane coating is after the accelerated aging test of more than 2000h, and coating is without bubbling, without cracking, slight without delamination, variable color.
2, the present invention is compared with other protection finish paint, and due to containing fluorine-containing micropowder and high rigidity oxide, this fluorine silication acroleic acid polyurethane coating has the anti-scratch performance of superior wearability, sliding and excellence. Solid content >=50% of fluorine silication acroleic acid polyurethane, viscosity >=70s, fineness≤35 μm, the hardness after the curing of coatings that this coating prepares is not less than 4H.
3, the present invention is compared with other protection finish paint, owing to containing fluorine-containing micropowder and silicon class additive, this fluorine silication acroleic acid polyurethane coating has hydrophobicity and the antifouling property of excellence. By stoping water and starvation, greatly extend the protection life-span.
4, the present invention is compared with other protection finish paint, the combination of Hydroxylated acrylic resin, pigment, high rigidity oxide filler, functional aid and Blocked Isocyanate Curing Agents is optimized, and this fluorine silication acroleic acid polyurethane coating has the temp. variation resistant performance of excellence. The resistance to artificial accelerated aging (2000h) of the coating that this coating prepares, coating is without foaming, without cracking, without delamination, variable color 1 grade (aberration 2.1), loss of gloss 1 grade (gloss loss 15%), efflorescence 1 grade, resistance to neutral salt spray (2000h), coating is without red rust, without bubbling.
The fluorine silication acroleic acid polyurethane coating of two-component fluorine silication acroleic acid polyurethane coating and the present invention is in construction, solidify, the aspects such as performance have certain difference, in two-component fluorine silication acroleic acid polyurethane coating, Hydroxylated acrylic resin resin in first component and the Blocked Isocyanate Curing Agents in second component can solidify dry under natural temperature or suitable high temperature (10-70 DEG C), in the fluorine silication acroleic acid polyurethane coating of the present invention, the reaction of Blocked Isocyanate Curing Agents and Hydroxylated acrylic resin must (130-160 DEG C) film-forming under the high temperature conditions, hardening time is fast, only need 0.5-1h. the fluorine silication acroleic acid polyurethane coating of the present invention is relative to two-component fluorine silication acroleic acid polyurethane coating, and its construction to facilitate, it is not necessary to carrying out the operations such as the calculating of first, second component, and mixing, both can construct as long as adding suitable solvent. simultaneously for the fluorine silication acroleic acid polyurethane coating of the present invention, the combination property of its paint film is better than bi-component fluosilicic acroleic acid polyurethane coating, is mainly manifested in the aspect such as hardness, anti-scratch, resistance to ag(e)ing.
Detailed description of the invention
Below in conjunction with embodiment, the present invention is further illustrated.
Embodiment 1.
A kind of fluorine silication acroleic acid polyurethane coating of the present embodiment, including the raw material of following percentage by weight:
Hydroxylated acrylic resin 52%
Solvent 20%
Fluorine-containing micropowder 0.2%
Pigment 5%
High rigidity oxide 3%
Auxiliary agent 2.8%
Blocked Isocyanate Curing Agents 17%
Wherein, described Hydroxylated acrylic resin is hydroxy acrylate copolymer, and solid part is 59%, and proportion is 0.95g/cm3, viscosity is 5500cp (25 DEG C), and acid value is 5mgKOH/g (100%), and hydroxyl value is 53mgKOH/g.
Wherein, described solvent is any one or more than one the mixture in the dimethylbenzene of processed, butyl ester, ethylene glycol ether acetate, nylon acid dimethyl ester, Glutaric Acid Dimethyl ester, adipic acid dimethyl ester and DAA;
Wherein, described fluorine-containing micropowder is ptfe micropowder;
Wherein, described pigment be in titanium dioxide, white carbon black, iron oxide yellow, phthalocyanine blue, lemon yellow, iron oxide red, barba hispanica any two kinds with mass ratio for the 1:1 mixture mixed;
Wherein, described high rigidity oxide is the one in zirconium oxide, magnesium oxide, silicon oxide, aluminium oxide and beryllium oxide;
Wherein, described Blocked Isocyanate Curing Agents is hexamethylene diisocyanate trimer;
Wherein, described auxiliary agent includes the raw material of following weight portion:
Polysiloxane leveling agents 0.1%
Silicone based defoamer 0.3%
High-molecular type dispersing agent 0.5%
Polyester anti-flooding agent 0.4%
Benzotriazole UV absorbers 0.7%
Many methyl age resister 0.8%;
A kind of preparation method of fluorine silication acroleic acid polyurethane coating, including following procedure of processing:
Step one, by component formula, be proportionally added into producing in tank by the Hydroxylated acrylic resin of 30% percentage by weight, solvent, pigment, high-molecular type dispersing agent, fluorine-containing powder material;
Step 2, when rotating speed is 1200r/min disperse 20min;
Step 3, vertical sand milling or horizontal sand milling device is used to grind 4h;
Step 4, stopping are ground, add the Hydroxylated acrylic resin of surplus, high rigidity oxide, polysiloxane leveling agents, silicone based defoamer, polyester anti-flooding agent, benzotriazole UV absorbers, many methyl age resister, Blocked Isocyanate Curing Agents, dispersion 10min, filter, load in paint vehicle bucket, namely obtain fluorine silication acroleic acid polyurethane coating.
The application process of a kind of fluorine silication acroleic acid polyurethane coating, comprises the following steps:
The first step: steel construction base material is first carried out surface cleaning process, then base material is carried out sandblasting, ball blast or phosphatization;
Second step: spraying zinc powder class primer coating on the steel that surface cleaning processes, its thickness is 80 μm;
3rd step: spray polyurethane inter coat on zinc powder class primer coating, its thickness is 40 μm;
4th step: spray fluorine silication acroleic acid polyurethane coating on polyurethane inter coat, its thickness is 80 μm;
5th step: under 160 DEG C of baking conditions, solidifies 0.5 hour, makes curing of coating form coating.
Embodiment 2.
A kind of fluorine silication acroleic acid polyurethane coating of the present embodiment, including the raw material of following percentage by weight:
Hydroxylated acrylic resin 55%
Solvent 18%
Fluorine-containing micropowder 0.8%
Pigment 4%
High rigidity oxide 2.5%
Auxiliary agent 3.7%
Blocked Isocyanate Curing Agents 16%
Wherein, described Hydroxylated acrylic resin is hydroxy acrylate copolymer, and solid part is 60%, and proportion is 1g/cm3, viscosity is 5800cp (25 DEG C), and acid value is 7mgKOH/g (100%), and hydroxyl value is 54mgKOH/g.
Wherein, described solvent includes the raw material of following percentage by weight:
Dimethylbenzene 35%
Butyl ester 13%
Ethylene glycol ether acetate 15%
Nylon acid dimethyl ester 6%
Glutaric Acid Dimethyl ester 12%
Adipic acid dimethyl ester 8%
DAA 11%;
Wherein, described fluorine-containing micropowder is Kynoar micropowder;
Wherein, described pigment is the one in titanium dioxide, white carbon black, iron oxide yellow, phthalocyanine blue, lemon yellow, iron oxide red, barba hispanica;
Wherein, described high rigidity oxide be in zirconium oxide, magnesium oxide, silicon oxide, aluminium oxide and beryllium oxide any two kinds with mass ratio for the 1:1 mixture mixed;
Wherein, described Blocked Isocyanate Curing Agents is isophorone diisocyanate trimer;
Wherein, described auxiliary agent includes the raw material of following weight portion:
Polysiloxane leveling agents 0.15%
Silicone based defoamer 0.8%
High-molecular type dispersing agent 0.6%
Polyester anti-flooding agent 0.65%
Benzotriazole UV absorbers 0.8%
Many methyl age resister 0.7%;
A kind of preparation method of fluorine silication acroleic acid polyurethane coating, including following procedure of processing:
Step one, by component formula, be proportionally added into producing in tank by the Hydroxylated acrylic resin of 35% percentage by weight, solvent, pigment, high-molecular type dispersing agent, fluorine-containing powder material;
Step 2, when rotating speed is 1500r/min disperse 18min;
Step 3, vertical sand milling or horizontal sand milling device is used to grind 4.2h;
Step 4, stopping are ground, add the Hydroxylated acrylic resin of surplus, high rigidity oxide, polysiloxane leveling agents, silicone based defoamer, polyester anti-flooding agent, benzotriazole UV absorbers, many methyl age resister, Blocked Isocyanate Curing Agents, dispersion 12min, filter, load in paint vehicle bucket, namely obtain fluorine silication acroleic acid polyurethane coating.
The application process of a kind of fluorine silication acroleic acid polyurethane coating, comprises the following steps:
The first step: steel construction base material is first carried out surface cleaning process, then base material is carried out sandblasting, ball blast or phosphatization;
Second step: spraying zinc powder class primer coating on the steel that surface cleaning processes, its thickness is 90 μm;
3rd step: spray polyurethane inter coat on zinc powder class primer coating, its thickness is 50 μm;
4th step: spray fluorine silication acroleic acid polyurethane coating on polyurethane inter coat, its thickness is 90 μm;
5th step: under 150 DEG C of baking conditions, solidifies 0.6 hour, makes curing of coating form coating.
Embodiment 3.
A kind of fluorine silication acroleic acid polyurethane coating of the present embodiment, including the raw material of following percentage by weight:
Hydroxylated acrylic resin 60%
Solvent 15%
Fluorine-containing micropowder 1.2%
Pigment 3%
High rigidity oxide 1.8%
Auxiliary agent 4%
Blocked Isocyanate Curing Agents 15%
Wherein, described Hydroxylated acrylic resin is hydroxy acrylate copolymer, and solid part is 60%, and proportion is 1.01g/cm3, viscosity is 6000cp (25 DEG C), and acid value is 9mgKOH/g (100%), and hydroxyl value is 55mgKOH/g.
Wherein, described solvent includes the raw material of following percentage by weight:
Dimethylbenzene 40%
Butyl ester 12%
Ethylene glycol ether acetate 10%
Nylon acid dimethyl ester 15%
Glutaric Acid Dimethyl ester 6%
Adipic acid dimethyl ester 5%
DAA 12%;
Wherein, described fluorine-containing micropowder is perfluoroethylene-propylene micropowder;
Wherein, described pigment includes the raw material of following percentage by weight:
Titanium dioxide 90%
Pigment adjuvant 10%
Wherein, titanium dioxide is Rutile type titanium dioxide;
Wherein, pigment adjuvant is one or more the mixture in white carbon black, iron oxide yellow, phthalocyanine blue, lemon yellow, iron oxide red, barba hispanica;
Wherein, described high rigidity oxide be in zirconium oxide, magnesium oxide, silicon oxide, aluminium oxide and beryllium oxide any three kinds be 1:1:1 with mass ratio mixture;
Wherein, described Blocked Isocyanate Curing Agents is hexamethylene diisocyanate biruet;
Wherein, described auxiliary agent includes the raw material of following weight portion:
Polysiloxane leveling agents 0.2%
Silicone based defoamer 0.6%
High-molecular type dispersing agent 0.9%
Polyester anti-flooding agent 0.8%
Benzotriazole UV absorbers 0.9%
Many methyl age resister 0.6%;
A kind of preparation method of fluorine silication acroleic acid polyurethane coating, including following procedure of processing:
Step one, by component formula, be proportionally added into producing in tank by the Hydroxylated acrylic resin of 40% percentage by weight, solvent, pigment, high-molecular type dispersing agent, fluorine-containing powder material;
Step 2, when rotating speed is 1600r/min disperse 16min;
Step 3, vertical sand milling or horizontal sand milling device is used to grind 4.5h;
Step 4, stopping are ground, add the Hydroxylated acrylic resin of surplus, high rigidity oxide, polysiloxane leveling agents, silicone based defoamer, polyester anti-flooding agent, benzotriazole UV absorbers, many methyl age resister, Blocked Isocyanate Curing Agents, dispersion 18min, filter, load in paint vehicle bucket, namely obtain fluorine silication acroleic acid polyurethane coating.
The application process of a kind of fluorine silication acroleic acid polyurethane coating, comprises the following steps:
The first step: steel construction base material is first carried out surface cleaning process, then base material is carried out sandblasting, ball blast or phosphatization;
Second step: spraying zinc powder class primer coating on the steel that surface cleaning processes, its thickness is 100 μm;
3rd step: spray polyurethane inter coat on zinc powder class primer coating, its thickness is 60 μm;
4th step: spray fluorine silication acroleic acid polyurethane coating on polyurethane inter coat, its thickness is 100 μm;
5th step: under 140 DEG C of baking conditions, solidifies 0.8 hour, makes curing of coating form coating.
Embodiment 4.
A kind of fluorine silication acroleic acid polyurethane coating of the present embodiment, including the raw material of following percentage by weight:
Hydroxylated acrylic resin 65%
Solvent 12%
Fluorine-containing micropowder 2%
Pigment 1.8%
High rigidity oxide 1.2%
Auxiliary agent 4.5%
Blocked Isocyanate Curing Agents 13.5%
Wherein, described Hydroxylated acrylic resin is hydroxy acrylate copolymer, and solid part is 61%, and proportion is 1.02g/cm3, viscosity is 6250cp (25 DEG C), and acid value is 10mgKOH/g (100%), and hydroxyl value is 55mgKOH/g.
Wherein, described solvent includes the raw material of following percentage by weight:
Dimethylbenzene 45%
Butyl ester 11%
Ethylene glycol ether acetate 6%
Nylon acid dimethyl ester 8%
Glutaric Acid Dimethyl ester 10%
Adipic acid dimethyl ester 7%
DAA 13%;
Wherein, described fluorine-containing micropowder is polytetrafluoroethylmodified modified polyethylene micropowder;
Wherein, described pigment includes the raw material of following percentage by weight:
Titanium dioxide 95%
Pigment adjuvant 5
Wherein, titanium dioxide is Rutile type titanium dioxide;
Wherein, pigment adjuvant is one or more the mixture in white carbon black, iron oxide yellow, phthalocyanine blue, lemon yellow, iron oxide red, barba hispanica;
Wherein, described high rigidity oxide is the mixture that any four in zirconium oxide, magnesium oxide, silicon oxide, aluminium oxide and beryllium oxide is 1:1:1 with mass ratio;
Wherein, described Blocked Isocyanate Curing Agents be in hexamethylene diisocyanate trimer, isophorone diisocyanate trimer and hexamethylene diisocyanate biruet any two kinds be 1:1 with mass ratio mixture;
Wherein, described auxiliary agent includes the raw material of following weight portion:
Polysiloxane leveling agents 0.25%
Silicone based defoamer 0.45%
High-molecular type dispersing agent 1%
Polyester anti-flooding agent 1%
Benzotriazole UV absorbers 1%
Many methyl age resister 0.8%;
A kind of preparation method of fluorine silication acroleic acid polyurethane coating, including following procedure of processing:
Step one, by component formula, be proportionally added into producing in tank by the Hydroxylated acrylic resin of 45% percentage by weight, solvent, pigment, high-molecular type dispersing agent, fluorine-containing powder material;
Step 2, when rotating speed is 1800r/min disperse 12min;
Step 3, vertical sand milling or horizontal sand milling device is used to grind 5h;
Step 4, stopping are ground, add the Hydroxylated acrylic resin of surplus, high rigidity oxide, polysiloxane leveling agents, silicone based defoamer, polyester anti-flooding agent, benzotriazole UV absorbers, many methyl age resister, Blocked Isocyanate Curing Agents, dispersion 20min, filter, load in paint vehicle bucket, namely obtain fluorine silication acroleic acid polyurethane coating.
The application process of a kind of fluorine silication acroleic acid polyurethane coating, comprises the following steps:
The first step: steel construction base material is first carried out surface cleaning process, then base material is carried out sandblasting, ball blast or phosphatization;
Second step: spraying zinc powder class primer coating on the steel that surface cleaning processes, its thickness is 110 μm;
3rd step: spray polyurethane inter coat on zinc powder class primer coating, its thickness is 70 μm;
4th step: spray fluorine silication acroleic acid polyurethane coating on polyurethane inter coat, its thickness is 110 μm;
5th step: under 135 DEG C of baking conditions, solidifies 0.7 hour, makes curing of coating form coating.
Embodiment 5.
A kind of fluorine silication acroleic acid polyurethane coating of the present embodiment, including the raw material of following percentage by weight:
Hydroxylated acrylic resin 69.9%
Solvent 10%
Fluorine-containing micropowder 3%
Pigment 1.1%
High rigidity oxide 2%
Auxiliary agent 2%
Blocked Isocyanate Curing Agents 12%
Wherein, described Hydroxylated acrylic resin is hydroxy acrylate copolymer, and solid part is 62%, and proportion is 1.05g/cm3, viscosity is 6500cp (25 DEG C), and acid value is 12mgKOH/g (100%), and hydroxyl value is 56mgKOH/g.
Wherein, described solvent includes the raw material of following percentage by weight:
Dimethylbenzene 55%
Butyl ester 10%
Ethylene glycol ether acetate 5%
Nylon acid dimethyl ester 5%
Glutaric Acid Dimethyl ester 5%
Adipic acid dimethyl ester 10%
DAA 10%;
Wherein, described fluorine-containing micropowder is ptfe micropowder;
Wherein, described pigment includes the raw material of following percentage by weight:
Titanium dioxide 99%
Pigment adjuvant 1%
Wherein, titanium dioxide is Rutile type titanium dioxide;
Wherein, pigment adjuvant is one or more the mixture in white carbon black, iron oxide yellow, phthalocyanine blue, lemon yellow, iron oxide red, barba hispanica;
Wherein, the mixture that described high rigidity oxide is zirconium oxide, magnesium oxide, silicon oxide, aluminium oxide and beryllium oxide is 1:1:1:1:1 with mass ratio;
Wherein, described Blocked Isocyanate Curing Agents is the mixture that hexamethylene diisocyanate trimer, isophorone diisocyanate trimer and hexamethylene diisocyanate biruet are 1:1:1 with mass ratio;
Wherein, described auxiliary agent includes the raw material of following weight portion:
Polysiloxane leveling agents 0.3%
Silicone based defoamer 0.1%
High-molecular type dispersing agent 0.5%
Polyester anti-flooding agent 0.1%
Benzotriazole UV absorbers 0.5%
Many methyl age resister 0.5%;
A kind of preparation method of fluorine silication acroleic acid polyurethane coating, including following procedure of processing:
Step one, by component formula, be proportionally added into producing in tank by the Hydroxylated acrylic resin of 50% percentage by weight, solvent, pigment, high-molecular type dispersing agent, fluorine-containing powder material;
Step 2, when rotating speed is 2000r/min disperse 10min;
Step 3, vertical sand milling or horizontal sand milling device is used to grind 5h;
Step 4, stopping are ground, add the Hydroxylated acrylic resin of surplus, high rigidity oxide, polysiloxane leveling agents, silicone based defoamer, polyester anti-flooding agent, benzotriazole UV absorbers, many methyl age resister, Blocked Isocyanate Curing Agents, dispersion 25min, filter, load in paint vehicle bucket, namely obtain fluorine silication acroleic acid polyurethane coating.
The application process of a kind of fluorine silication acroleic acid polyurethane coating, comprises the following steps:
The first step: steel construction base material is first carried out surface cleaning process, then base material is carried out sandblasting, ball blast or phosphatization;
Second step: spraying zinc powder class primer coating on the steel that surface cleaning processes, its thickness is 120 μm;
3rd step: spray polyurethane inter coat on zinc powder class primer coating, its thickness is 80 μm;
4th step: spray fluorine silication acroleic acid polyurethane coating on polyurethane inter coat, its thickness is 120 μm;
5th step: under 130 DEG C of baking conditions, solidifies 1 hour, makes curing of coating form coating.
The physical property of the fluorine silication acroleic acid polyurethane coating that embodiments of the invention 1-5 prepares is as follows:
The above embodiment, the simply better embodiment of the present invention, it is not limit the scope of the present invention, therefore all equivalences done according to the structure described in the present patent application the scope of the claims, feature and principle change or modify, and all should include within the scope of present patent application.
Claims (9)
1. a fluorine silication acroleic acid polyurethane coating, it is characterised in that: include the raw material of following percentage by weight:
Hydroxylated acrylic resin 50-70%
Solvent 10-20%
Fluorine-containing micropowder 0.1%-3%
Pigment 1-5%
High rigidity oxide 1-3%
Auxiliary agent 2-5%
Blocked Isocyanate Curing Agents 10-20%
Wherein, described solvent is one or more the mixture in the dimethylbenzene of processed, ethylene glycol ether acetate, nylon acid dimethyl ester, Glutaric Acid Dimethyl ester, adipic acid dimethyl ester and DAA;
Wherein, described fluorine-containing micropowder is ptfe micropowder, Kynoar micropowder, perfluoroethylene-propylene micropowder or polytetrafluoroethylmodified modified polyethylene micropowder;
Wherein, described high rigidity oxide is one or more the mixture in zirconium oxide, magnesium oxide, aluminium oxide and beryllium oxide;
Wherein, described Blocked Isocyanate Curing Agents is one or more the mixture in hexamethylene diisocyanate trimer, isophorone diisocyanate trimer and hexamethylene diisocyanate biruet;
Described pigment includes the raw material of following percentage by weight:
Titanium dioxide 90-99%
Pigment adjuvant 1-10%
Pigment adjuvant is one or more the mixture in white carbon black, iron oxide yellow, phthalocyanine blue, lemon yellow, barba hispanica;
Described auxiliary agent includes following raw material: polysiloxane leveling agents, silicone based defoamer, high-molecular type dispersing agent, polyester anti-flooding agent, benzotriazole UV absorbers and many methyl age resister.
2. a kind of fluorine silication acroleic acid polyurethane coating according to claim 1, it is characterised in that: include the raw material of following percentage by weight:
Hydroxylated acrylic resin 50-65%
Solvent 10-20%
Fluorine-containing micropowder 0.5-2%
Pigment 2-5
High rigidity oxide 1.5-2.5%
Auxiliary agent 2.5-4%
Blocked Isocyanate Curing Agents 12-17%.
3. a kind of fluorine silication acroleic acid polyurethane coating according to claim 1, it is characterised in that: described Hydroxylated acrylic resin is hydroxy acrylate copolymer, and solid part is 59-62%, and proportion is 0.95-1.05g/cm3, viscosity is 5500-6500cp (25 DEG C), and acid value is 5-12mgKOH/g (100%), and hydroxyl value is 53-56mgKOH/g.
4. a kind of fluorine silication acroleic acid polyurethane coating according to claim 1, it is characterised in that: described solvent includes the raw material of following percentage by weight:
Dimethylbenzene 30-60%
Butyl ester 10-15%
Ethylene glycol ether acetate 5-20%
Nylon acid dimethyl ester 5-20%
Glutaric Acid Dimethyl ester 5-20%
Adipic acid dimethyl ester 5-20%
DAA 10-15%.
5. a kind of fluorine silication acroleic acid polyurethane coating according to claim 1, it is characterised in that: described titanium dioxide is Rutile type titanium dioxide.
6. a kind of fluorine silication acroleic acid polyurethane coating according to claim 1, it is characterised in that: described auxiliary agent includes the raw material of following percentage by weight:
Polysiloxane leveling agents 0.1-0.3%
Silicone based defoamer 0.1-1%
High-molecular type dispersing agent 0.5-1%
Polyester anti-flooding agent 0.1-1%
Benzotriazole UV absorbers 0.5-1%
Many methyl age resister 0.5-0.8%.
7. a kind of fluorine silication acroleic acid polyurethane coating according to claim 6, it is characterised in that: described polysiloxane leveling agents is polydimethylsiloxane, poly-methyl alkyl siloxane or organic modified polyorganosiloxane; Described silicone based defoamer is the mixture of polymethyl siloxane, broken bubble polymer and siloxanes; Described high-molecular type dispersing agent is polyacrylate, modified polyurethane or polyamide; Described polyester anti-flooding agent is high molecular many chains polyester, Block copolymer, fatty acid modified polyester; Described benzotriazole UV absorbers is 2-(2 '-hydroxyl-5 '-aminomethyl phenyl) BTA, 2-(2 '-hydroxyl-3 ', 5 '-two tertiary phenyl)-5-chlorination benzotriazole; Described many methyl age resister is 4-benzoyloxy-2,2,6,6-tetramethyl piperidines, HMPA.
8. the preparation method of a kind of fluorine silication acroleic acid polyurethane coating according to claim 6, it is characterised in that: include following procedure of processing:
Step one, by component formula, be proportionally added into producing in tank by the Hydroxylated acrylic resin of 30-50% percentage by weight, solvent, pigment, high-molecular type dispersing agent, fluorine-containing powder material;
Step 2, when rotating speed is 1200-2000r/min disperse 10-20min;
Step 3, vertical sand milling or horizontal sand milling device is used to grind 4-5h;
Step 4, stopping are ground, add the Hydroxylated acrylic resin of 50-70% percentage by weight, high rigidity oxide, polysiloxane leveling agents, silicone based defoamer, polyester anti-flooding agent, benzotriazole UV absorbers, many methyl age resister, Blocked Isocyanate Curing Agents, dispersion 10-25min, filter, load in paint vehicle bucket, namely obtain fluorine silication acroleic acid polyurethane coating.
9. the application process of a kind of fluorine silication acroleic acid polyurethane coating according to any one in claim 1-7, it is characterised in that: comprise the following steps:
The first step: steel construction base material is first carried out surface cleaning process, then base material is carried out sandblasting, ball blast or phosphatization;
Second step: spraying zinc powder class primer coating on the steel that surface cleaning processes, its thickness is 80-120 μm;
3rd step: spray polyurethane inter coat on zinc powder class primer coating, its thickness is 40-80 μm;
4th step: spray fluorine silication acroleic acid polyurethane coating on polyurethane inter coat, its thickness is 80-120 μm;
5th step: under 130-160 DEG C of baking condition, solidifies 0.5-1 hour, makes curing of coating form coating.
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