CN102963098A - Environment-friendly anticorrosion and temperature-reduction integrated paint for storage tank and preparation method of paint - Google Patents
Environment-friendly anticorrosion and temperature-reduction integrated paint for storage tank and preparation method of paint Download PDFInfo
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- CN102963098A CN102963098A CN2012105307977A CN201210530797A CN102963098A CN 102963098 A CN102963098 A CN 102963098A CN 2012105307977 A CN2012105307977 A CN 2012105307977A CN 201210530797 A CN201210530797 A CN 201210530797A CN 102963098 A CN102963098 A CN 102963098A
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Abstract
The invention discloses an environment-friendly anticorrosion and temperature-reduction integrated paint for a storage tank and a preparation method of the paint. The environment-friendly anticorrosion and temperature-reduction integrated paint consists of anticorrosion primer, heat-insulation interlayer paint and temperature-reduction surface layer paint. The anticorrosion primer is prepared by taking acrylic emulsion as a filming base material, iron-titanium powder as an antirust pigment filler and calcium carbonate powder, precipitated barium sulphate powder and talcum powder as body fillers, and supplementing auxiliaries and water. The heat-insulation interlayer paint is prepared by taking acrylic emulsion as a filming base material and hollow glass beads as a heat-insulation filler and supplementing auxiliaries and water. The temperature-reduction surface layer paint is prepared by taking acrylic emulsion as a filming base material and titanium dioxide powder, talcum powder, silicon dioxide, hollow glass beads and far infrared ceramic powder as temperature-reduction pigment fillers and supplementing auxiliaries and water. The environment-friendly anticorrosion and temperature-reduction integrated paint can form a film at normal temperature, is friendly to environment, plays a remarkable protection role to the storage tank due to high anticorrosion and temperature-reduction properties, and can be widely used for various storage tanks of oil gas and chemical materials.
Description
Technical field
The present invention relates to anticorrosive paint that a kind of oil gas and industrial chemicals storage tank use and preparation method thereof.
Background technology
In recent years, China has implemented the strategy of " increase oil reserve, guarantee energy security ", 6 years of plan utilization, the China's oil deposit is increased to three months by present less than one month.This means that country will build the oil storage equipment such as a large amount of storage tank farms, oil storage tank.
At present, oil gas and the industrial chemicals storage tank of China take carbon steel as base material mostly adopts the oil paints such as aluminium paint or epoxy micaceous iron to carry out preservative treatment.On the one hand, the volatile organic content of these oil paints is high, not only causes serious environmental pollution, and the workmen is healthy in harm, and work progress to fire-proof and explosion-proof safe require high.On the other hand, utilize oil paint that storage tank is carried out simple preservative treatment, the sunlight lower meeting of being exposed to the sun raises tank temperature in summer, causes oil gas and industrial chemicals so-called because evaporation produces " loss through breathing ".Take product oil as example, 10000 m
3Storage tank, the oil loss that therefore cause every day in summer is 4.2 tons for gasoline, be 200 kilograms for diesel oil, the loss of other oil product is then between said two devices.
For reducing oil gas and industrial chemicals in " loss through breathing " in summer, the method that China adopts shower water at present mostly is to the storage tank processing of lowering the temperature.Equally with 10000 m
3Storage tank be example, if spray 5 hours water every day three months summers, singly be that a water resource waste that causes summer is 60000m
3This processing method not only can cause the destruction of anticorrosive coat, causes environmental pollution, the more important thing is the significant wastage that can cause water resource.
Summary of the invention
The invention provides a kind of storage tank with environmentally friendly anticorrosion cooling integrative paint and preparation method thereof, solve existing oil gas and industrial chemicals storage tank with coating to environment with human health is harmful, the applying coating process safety is poor, do not have cooling function, oil gas and the large technical problem of industrial chemicals loss through breathing.
The technical solution adopted for the present invention to solve the technical problems is:
This storage tank is comprised of anti-corrosion primer, heat insulation intermediate layer coating and cooling investment precoat with environmentally friendly anticorrosion cooling integrative paint;
Described anti-corrosion primer is take acrylic emulsion as the film forming base-material, take the ferrotitanium powder as antirust color stuffing, take Paris white, blanc fixe powder and talcum powder as the physique filler, and is aided with auxiliary agent and water is formulated;
Described heat insulation intermediate layer coating is take acrylic emulsion as the film forming base-material, take hollow glass micropearl as thermal insulating filling, and is aided with auxiliary agent and water is formulated;
Described cooling investment precoat is take acrylic emulsion as the film forming base-material, take titanium dioxide, talcum powder, silica, hollow glass micropearl and far-infared ceramic powder as the cooling color stuffing, and is aided with auxiliary agent and water is formulated.
The raw material of described anti-corrosion primer forms as follows by weight ratio:
25～35 parts of acrylic emulsions;
25～32 parts in water;
5～8 parts in ferrotitanium powder;
3～7 parts of Paris whites;
4～6 parts in blanc fixe powder;
10～12 parts of talcum powder;
0.4～1.2 part of anti-sudden strain of a muscle rust agent;
0.5～0.8 part of sagging inhibitor;
1～2 part of dispersant;
0.2～0.6 part of wetting agent;
0.2～0.6 part of defoamer;
0.2～0.6 part of thickening leveling agent;
0.2～0.6 part of coalescents;
The raw material of described heat insulation intermediate layer coating forms as follows by weight ratio:
60～80 parts of acrylic emulsions;
6～9 parts in water;
18～25 parts of hollow glass micropearls;
0.1～0.5 part of dispersant;
0.1～0.5 part of wetting agent;
0.2～0.8 part of defoamer;
0.2～0.8 part of thickening leveling agent;
0.1～0.5 part of coalescents;
The raw material of described cooling investment precoat forms as follows by weight ratio:
20～65 parts of acrylic emulsions;
10～40 parts of titanium dioxides;
1～3.4 part of talcum powder;
2～5 parts of silica;
6～20 parts of hollow glass micropearls;
3～7 parts of far-infared ceramic powders;
0.1～0.5 part of dispersant;
0.05～0.32 part of wetting agent;
0.88～1.42 part of defoamer;
0.05～0.5 part of thickening leveling agent;
0.05～0.5 part of coalescents;
7～15 parts in water.
Described acrylic emulsion is mono-component aqueous pure acrylic latex, and its solid content is 45～48%, and viscosity is 1～6 Pa.s, and the pH value is 7.5～9.5,23 ℃ of MFTs.
Described ferrotitanium powder is 600 order white powders, and its P205 content is not less than 12%, and oil absorption is not more than 22%, and density is 2.8 ~ 3.5 g/cm
3, the pH value 7～10 in water slurry.
The rutile type titanium white of described titanium dioxide for making with chloridising, content of titanium dioxide is not less than 91%, oil factor 17 g/100 g, the pH value 7.5～9.5 in water slurry.
The particle diameter of described hollow glass micropearl is 2～85 μ m, and real density is 0.40 g/cm
3, compression strength is 28～33 MPa.
Described far-infared ceramic powder is the nanometer scale ceramics powder, and its granularity is 10～20 nm.
The agent of described anti-sudden strain of a muscle rust is colourless liquid, and its pH value is 8～9, and density is 1.5 g/cm
3Sagging inhibitor is white powder, and its pH value is 9～11.
Described dispersant is the Sodium Polyacrylate saline solution, and its solid content is 45%; Wetting agent is APES, and its solid content is 100%; Defoamer is the mineral oil series mixture, and solid content is 100%; Coalescents is 2,2,4-trimethyl-1, the 3-pentanediol mono isobutyrate; The thickening leveling agent is non-ionic hydrophobic modified polyurethane levelling agent, and its solid content is 30%.
This storage tank prepares respectively anti-corrosion primer, heat insulation intermediate layer coating and cooling investment precoat with the preparation method of environmentally friendly anticorrosion cooling integrative paint;
The preparation method of described anti-corrosion primer has the following steps:
Step 1, with acrylic emulsion, dispersant, wetting agent, anti-rust agent and the defoamer of dodging that takes by weighing by formula ratio in the liquid feed well, pump in the pulping tank by vacuum, behind time cleaning liquid feed well of 50～80% moisture in the formula ratio, in vavuum pump people pulping tank, in whipping process, load weighted ferrotitanium powder, Paris white, blanc fixe powder, talcum powder and sagging inhibitor are pumped in the pulping tank by vacuum successively, stir;
Step 2 pumps into sand milling dispersion in the sand milling tank with the suspension that makes by vacuum;
Step 3 pumps into the suspension behind the sand milling in the paint mixing tank by vacuum, adds coalescents and thickening leveling agent, sieves after the water adjusting coating viscosity with surplus, packing;
The preparation method of described heat insulation intermediate layer coating has the following steps:
Step 1, the acrylic emulsion, dispersant, wetting agent and the defoamer that take by weighing by formula ratio in the liquid feed well are pumped into pulping tank by vacuum, behind time cleaning liquid feed well of 50～80% moisture in the formula ratio, pump in the pulping tank by vacuum, in whipping process, load weighted hollow glass micropearl is pumped in the pulping tank by vacuum, stir;
Step 2 pumps into the suspension that makes in the paint mixing tank by vacuum, adds coalescents, thickening leveling agent under fixed rotating speed, add sieve after the excess water adjusting coating viscosity, packing;
The preparation method of described cooling investment precoat has the following steps:
Step 1, with acrylic emulsion, dispersant, wetting agent and the defoamer that takes by weighing by formula ratio in the liquid feed well, pump into pulping tank by vacuum, behind time cleaning liquid feed well of 50～80% moisture in the formula ratio, pump in the pulping tank by vacuum, in the dispersed with stirring process, will pump in the pulping tank by vacuum by the load weighted titanium dioxide of prescription, talcum powder and silica, stir; With 1～5% aqueous dispersion far-infared ceramic powder in the formula ratio, more scattered far-infared ceramic powder suspension is pumped in the pulping tank, stir;
Step 2 pumps into sand milling dispersion in the sand milling tank with the suspension that makes by vacuum;
Step 3, suspension behind the sand milling is pumped in the paint mixing tank by vacuum, under fixed rotating speed, the hollow glass micropearl that adds formula ratio by the charging aperture on paint mixing tank top, after dispersed with stirring is even, add coalescents and thickening leveling agent from charging aperture, add sieve after the excess water adjusting coating viscosity, packing.
Beneficial effect of the present invention is as follows:
This anticorrosion cooling integrative paint adopts anticorrosive coat-thermal insulation layer-three layers of composite design of cooling layer, and anti-corrosive primer has excellent anti-corrosion function, can effectively protect base material, makes it avoid the corrosion such as acid-alkali salt.Adopt hollow glass micropearl as heat insulation intermediate layer filler, improved the temperature reduction performance of coating, improved again the abrasion resistance of coating.The cooling surface layer integrates reflection, radiation, heat insulation three kinds of cooling mechanisms, has good radiating and cooling effect.
Three layers of the present invention are all take the water-based pure-acrylic emulsion as the film forming base-material, add multiple color stuffing with anticorrosion, reflection, radiation, phase transformation and heat insulating function, are aided with the several functions auxiliary agent, and used color stuffing is the asepsis environment-protecting product.The film forming base-material adopts the water-based pure-acrylic emulsion, and its ageing resistace and weather resistance are good, outdoor long service life.In addition, this radiating and cooling coating has good anti-staining property, and metal base is had good adhesive force.This coating is film forming at normal temperatures, and organic volatile content is extremely low, and is therefore environmentally friendly, has high-intensity corrosion and temperature reduction performance.In addition, the present invention also has high solar heat reflection than (0.85) and hemispherical emissivity (0.86), has guaranteed that this coating can significantly reduce the surface and internal temperature of oil gas and industrial chemicals storage tank when summer, play good cooling effect.Simultaneously, this coating has good acid resistance, alkali resistance and salt tolerance, and storage tank is played significant protective action.
Acrylic emulsion is mono-component aqueous pure acrylic latex.This film forming base-material transparency is good, and refraction coefficient is lower, and the temperature reduction performance of coating is also corresponding better.Moreover acrylic resin itself is because containing the heat absorption group, have fabulous resistance to water, impermeability, weatherability, pliability and with the adhesive strength of basic unit.In addition, this film forming base-material is one-component normal temperature self-curing, convenient construction.
The ferrotitanium powder is HJ-606 composite iron-titanium rust resisting pigment.This rust resisting pigment easily disperses, and is not easy to foaming, and antisolvent precipitation and storage stability are good, and the harmful heavy metal such as not leaded, chromium, and traditional rust resisting pigments such as alternative zinc yellow, trbasic zinc phosphate, aluminium triphosphate significantly reduce cost and do not affect coating quality.
Titanium dioxide is the rutile type titanium white that chloridising is produced, and the rutile titanium dioxide refraction index is the highest, and visible light is had strong reflection, and cooling-down effect is best.
Talcum powder in the physique filler and silica refraction index are close with the film forming base-material, therefore, are transparent at whole visible light and near infrared region, do not produce reflection, do not disturb the performance of other color stuffing, and have very strong infrared radiation property.Since cheap, it is used, when reducing the coating cost, can increase the infra-red radiation ability of coating, the sun heat radiation that absorbs is fallen.
The hollow glass micropearl thermal conductivity factor is low, can strengthen wear-resisting wiping, washability, alkali resistance and the resistance to water of coating.
Anticorrosion cooling coating of the present invention has obviously anticorrosion and cooling-down effect, melts reflection, radiation and heat insulation three kinds of cooling mechanisms in one, can be widely used in all kinds of oil gas and industrial chemicals storage tank.
Description of drawings
The present invention is further described below in conjunction with drawings and Examples.
Fig. 1 is storage tank with the spectral reflectivity curve map of anticorrosion cooling integrative paint in 250～2500 nm wave-length coverages.
Fig. 2 is storage tank with anticorrosion cooling integrative paint cooling-down effect on-line continuous resolution chart.
Among Fig. 2: TR
1-reference model is towards the temperature of thermal source one side; TR
2The temperature of-reference backboard heat source one side; TS
1The temperature of-coating model coating surface (towards thermal source one side); TS
2-coating model is the temperature of thermal source one side dorsad.
The specific embodiment
For making purpose of the present invention, technical scheme and characteristics more clear, in this part, in conjunction with the specific embodiment, storage tank is set forth in more detail with anticorrosion cooling integrative paint.Of particular note, the described specific embodiment in this part is just in order to explain the present invention, but not in order to limit the present invention.
Embodiment 1, and this storage tank is comprised of anti-corrosion primer, heat insulation intermediate layer coating and cooling investment precoat with environmentally friendly anticorrosion cooling integrative paint.
The raw material of described anti-corrosion primer forms as follows by weight ratio:
30 parts of acrylic emulsions;
28 parts in water;
6 parts in ferrotitanium powder;
5 parts of Paris whites;
5 parts in blanc fixe powder;
11 parts of talcum powder;
0.7 part of anti-sudden strain of a muscle rust agent;
0.7 part of sagging inhibitor;
1 part of dispersant;
0.4 part of wetting agent;
0.4 part of defoamer;
0.4 part of thickening leveling agent;
0.4 part of coalescents;
The raw material of described heat insulation intermediate layer coating forms as follows by weight ratio:
70 parts of acrylic emulsions;
8 parts in water;
22 parts of hollow glass micropearls;
0.3 part of dispersant;
0.3 part of wetting agent;
0.5 part of defoamer;
0.5 part of thickening leveling agent;
0.3 part of coalescents;
The raw material of described cooling investment precoat forms as follows by weight ratio:
42 parts of acrylic emulsions;
25 parts of titanium dioxides;
2.2 parts of talcum powder;
3 parts of silica;
15 parts of hollow glass micropearls;
5 parts of far-infared ceramic powders;
0.3 part of dispersant;
0.2 part of wetting agent;
1.22 parts of defoamers;
0.3 part of thickening leveling agent;
0.3 part of coalescents;
11 parts in water.
Embodiment 2, and this storage tank is comprised of anti-corrosion primer, heat insulation intermediate layer coating and cooling investment precoat with environmentally friendly anticorrosion cooling integrative paint.
The raw material of described anti-corrosion primer forms as follows by weight ratio:
25 parts of acrylic emulsions;
25 parts in water;
5 parts in ferrotitanium powder;
3 parts of Paris whites;
4 parts in blanc fixe powder;
10 parts of talcum powder;
0.4 part of anti-sudden strain of a muscle rust agent;
0.5 part of sagging inhibitor;
1 part of dispersant;
0.2 part of wetting agent;
0.2 part of defoamer;
0.2 part of thickening leveling agent;
0.2 part of coalescents;
The raw material of described heat insulation intermediate layer coating forms as follows by weight ratio:
60 parts of acrylic emulsions;
6 parts in water;
18 parts of hollow glass micropearls;
0.1 part of dispersant;
0.1 part of wetting agent;
0.2 part of defoamer;
0.2 part of thickening leveling agent;
0.1 part of coalescents;
The raw material of described cooling investment precoat forms as follows by weight ratio:
20 parts of acrylic emulsions;
10 parts of titanium dioxides;
1 part of talcum powder;
2 parts of silica;
6 parts of hollow glass micropearls;
3 parts of far-infared ceramic powders;
0.1 part of dispersant;
0.05 part of wetting agent;
0.88 part of defoamer;
0.05 part of thickening leveling agent;
0.05 part of coalescents;
7 parts in water.
Embodiment 3, and this storage tank is comprised of anti-corrosion primer, heat insulation intermediate layer coating and cooling investment precoat with environmentally friendly anticorrosion cooling integrative paint.
The raw material of described anti-corrosion primer forms as follows by weight ratio:
35 parts of acrylic emulsions;
32 parts in water;
8 parts in ferrotitanium powder;
7 parts of Paris whites;
6 parts in blanc fixe powder;
12 parts of talcum powder;
1.2 parts of anti-sudden strain of a muscle rust agent;
0.8 part of sagging inhibitor;
2 parts of dispersants;
0.6 part of wetting agent;
0.6 part of defoamer;
0.6 part of thickening leveling agent;
0.6 part of coalescents;
The raw material of described heat insulation intermediate layer coating forms as follows by weight ratio:
80 parts of acrylic emulsions;
9 parts in water;
25 parts of hollow glass micropearls;
0.5 part of dispersant;
0.5 part of wetting agent;
0.8 part of defoamer;
0.8 part of thickening leveling agent;
0.5 part of coalescents;
The raw material of described cooling investment precoat forms as follows by weight ratio:
65 parts of acrylic emulsions;
40 parts of titanium dioxides;
3.4 parts of talcum powder;
5 parts of silica;
20 parts of hollow glass micropearls;
7 parts of far-infared ceramic powders;
0.5 part of dispersant;
0.32 part of wetting agent;
1.42 parts of defoamers;
0.5 part of thickening leveling agent;
0.5 part of coalescents;
15 parts in water.
Embodiment 4, and this storage tank is comprised of anti-corrosion primer, heat insulation intermediate layer coating and cooling investment precoat with environmentally friendly anticorrosion cooling integrative paint.
The raw material of described anti-corrosion primer forms as follows by weight ratio:
32 parts of acrylic emulsions;
30 parts in water;
7 parts in ferrotitanium powder;
6 parts of Paris whites;
5 parts in blanc fixe powder;
11 parts of talcum powder;
1 part of anti-sudden strain of a muscle rust agent;
0.7 part of sagging inhibitor;
2 parts of dispersants;
0.5 part of wetting agent;
0.5 part of defoamer;
0.5 part of thickening leveling agent;
0.5 part of coalescents;
The raw material of described heat insulation intermediate layer coating forms as follows by weight ratio:
75 parts of acrylic emulsions;
8 parts in water;
23 parts of hollow glass micropearls;
0.4 part of dispersant;
0.4 part of wetting agent;
0.6 part of defoamer;
0.6 part of thickening leveling agent;
0.4 part of coalescents;
The raw material of described cooling investment precoat forms as follows by weight ratio:
55 parts of acrylic emulsions;
35 parts of titanium dioxides;
2.8 parts of talcum powder;
4 parts of silica;
15 parts of hollow glass micropearls;
5 parts of far-infared ceramic powders;
0.4 part of dispersant;
0.22 part of wetting agent;
1.32 parts of defoamers;
0.3 part of thickening leveling agent;
0.3 part of coalescents;
13 parts in water.
In above-described embodiment 1～4, described acrylic emulsion is mono-component aqueous pure acrylic latex, and its solid content is 45～48%, and viscosity is 1～6 Pa.s, and the pH value is 7.5～9.5,23 ℃ of MFTs.
Described ferrotitanium powder is 600 order white powders, and its P205 content is not less than 12%, and oil absorption is not more than 22%, and density is 2.8 ~ 3.5 g/cm
3, the pH value 7～10 in water slurry.
The rutile type titanium white of described titanium dioxide for making with chloridising, content of titanium dioxide is not less than 91%, oil factor 17 g/100 g, the pH value 7.5～9.5 in water slurry.
The particle diameter of described hollow glass micropearl is 2～85 μ m, and real density is 0.40 g/cm
3, compression strength is 28～33 MPa.
Described far-infared ceramic powder nanometer scale ceramics powder, its granularity is 10～20 nm.
The agent of described anti-sudden strain of a muscle rust is colourless liquid, and its pH value is 8～9, and density is 1.5 g/cm
3Sagging inhibitor is white powder, and its pH value is 9～11.
Described dispersant is the Sodium Polyacrylate saline solution, and its solid content is 45%; Wetting agent is APES, and its solid content is 100%; Defoamer is the mineral oil series mixture, and solid content is 100%; Coalescents is 2,2,4-trimethyl-1, the 3-pentanediol mono isobutyrate; The thickening leveling agent is non-ionic hydrophobic modified polyurethane levelling agent, and its solid content is 30%.
This storage tank prepares respectively anti-corrosion primer, heat insulation intermediate layer coating and cooling investment precoat with the preparation method of environmentally friendly anticorrosion cooling integrative paint;
The preparation method of described anti-corrosion primer has the following steps:
Step 1, with the acrylic emulsion that takes by weighing by formula ratio in the liquid feed well, dispersant, wetting agent, anti-rust agent and the defoamer of dodging, pump in the pulping tank by vacuum, behind time cleaning liquid feed well of 70% moisture in the formula ratio, in vavuum pump people pulping tank, start pulping tank dispersion impeller motor, rotating speed is transferred to 300 Zhuan ∕ minutes, in whipping process with load weighted ferrotitanium powder, Paris white, the blanc fixe powder, talcum powder and sagging inhibitor pump in the pulping tank by vacuum successively, regulate the pulping tank frequency converter, the dispersion impeller rotating speed is transferred to 1000 Zhuan ∕ minutes, high-speed stirred disperses after 20 minutes the suspension that makes to be pumped in the sand milling tank by vacuum;
Step 2 is regulated sand milling tank frequency converter, its dispersion impeller rotating speed is transferred to 1000 turn ∕ minute, and the high speed sand milling disperses after 30 minutes the suspension behind the sand milling to be pumped in the paint mixing tank by vacuum;
Step 3 is started the motor of paint mixing tank dispersed with stirring blade, under fixed rotating speed 20 Zhuan ∕ minutes, adds coalescents and thickening leveling agent, stirs the water of adding surplus after 5 minutes, and adjusting coating viscosity is at 300 ~ 400 Pa.s, the packing of then sieving;
The preparation method of described heat insulation intermediate layer coating has the following steps:
Step 1, the acrylic emulsion, dispersant, wetting agent and the defoamer that take by weighing by formula ratio in the liquid feed well are pumped into pulping tank by vacuum, behind time cleaning liquid feed well of 70% moisture in the formula ratio, pump in the pulping tank by vacuum, start pulping tank dispersion impeller motor, rotating speed is transferred to 200 turn ∕ minute, in whipping process, load weighted hollow glass micropearl vacuum is pumped in the pulping tank, after the dispersed with stirring 20 minutes, the suspension that makes is pumped in the paint mixing tank by vacuum;
Step 3 in paint mixing tank, adds coalescents, thickening leveling agent under fixed rotating speed, add excess water adjusting coating viscosity at 300 ~ 400 Pa.s, the rear packing of sieving.
The preparation method of described cooling investment precoat has the following steps:
Step 1, acrylic emulsion, dispersant, wetting agent and defoamer with taking by weighing by formula ratio in the liquid feed well pump into pulping tank by vacuum, behind the moisture time cleaning liquid feed well with 70% in the formula ratio, pump in the pulping tank by vacuum; Start pulping tank dispersion impeller motor, rotating speed is transferred to 300 turn ∕ minute, in the dispersed with stirring process, will pump in the pulping tank by vacuum by the load weighted titanium dioxide of prescription, talcum powder and silica; In dispersion tank, with the aqueous dispersion far-infared ceramic powder of formula ratio 1 ~ 5%, by the liquid feed well scattered far-infared ceramic powder suspension is pumped into pulping tank; Regulate pulping tank dispersion impeller rotating speed to 1000 and turn ∕ minute, high-speed stirred pumped into the suspension that makes in the sand milling tank by vacuum after 20 minutes;
Step 2 is regulated sand milling tank rotating speed to 500 and is turned ∕ minute, and sand milling disperses after 60 minutes the suspension behind the sand milling to be pumped in the paint mixing tank by vacuum;
Step 3 under fixed rotating speed 20 Zhuan ∕ minutes, adds the hollow glass micropearl of formula ratio by the charging aperture on paint mixing tank top, after the dispersed with stirring 20 minutes, add coalescents and thickening leveling agent from charging aperture, add residue 30% water adjusting coating viscosity to 300 ~ 400 Pa.s, the rear packing of sieving.
This storage tank is coated on the carbon steel sheet of several piece youngster 4cm * 4 cm aluminium alloy plates, 17 cm * 17 cm carbon steel sheet and 15 cm * 7 cm successively with the anti-corrosion primer of anticorrosion cooling integrative paint, heat insulation intermediate coat and the cooling finish paint method by spraying, brushing or roller coating, maintenance is after 7 days, respectively in order to measure solar heat reflection ratio and infrared incidence, room temperature lowering performance and the acid and alkali-resistance salt performance of coating under standard conditions.The thickness of anti-corrosion primer, heat insulation intermediate coat and cooling finish paint is respectively 100 μ m, 100 μ m and 200 μ m on all models.
Employing is furnished with integrating sphere (150 mm diameter, Labsphere RSA-PE-19) ultraviolet-visible light-near infrared spectrometer (Perkin Elmer Lambda 750) is measured 3 storage tanks with the solar heat reflection ratio of anticorrosion cooling integrative paint sample in 250 ~ 2500 nm scopes, the spectral reflectance rate curve of 3 samples as shown in Figure 1, Fig. 1 has marked 3 sample reflectivity that get by integration simultaneously.
Fig. 1 shows that the storage tank of the embodiment of the invention compares repeated fabulous with anticorrosion cooling integrative paint, its solar heat reflection.The mean value of three samples is 0.85, its physical significance be when solar irradiation when the coating surface, have 85% heat directly to be reflected, and remaining 15% form with heat enters coating inside.
Build worker's standard JG/T235-2008 according to ASTM E434-10 and the People's Republic of China (PRC), adopt the stable state calorimeter method to measure storage tank with the infrared emittance of anticorrosion cooling integrative paint, the average of three sample infrared emittances is 0.86, its physical significance is: the part solar heat of coated absorption, its 86% form with infrared emission is dispersed in the surrounding enviroment.
As everyone knows, the inherent decisive factor of decision cooling coating temperature reduction performance is exactly solar heat reflection ratio and the infrared emittance of coating.High solar heat reflection is than having reduced the solar heat that shines coating surface, and high infrared emittance has then further strengthened the radiation cooling performance of coating.The storage tank of the embodiment of the invention has high sun reflectivity and infrared emittance with anticorrosion cooling integrative paint, and its most direct impact is exactly to reduce its surperficial temperature.Test its room temperature lowering performance, its result such as Fig. 1 institute with the cooling coating temperature reduction performance on-line continuous checkout gear of building voluntarily.In view of this radiating and cooling coating based on reflection, radiation, heat insulation three kinds of cooling mechanisms, the cooling-down effect of its coating surface may not be equal to the cooling-down effect at the model back side, therefore, for this type of the cooling coating, the cooling-down effect TR that it is surperficial
1-TS
1Characterize, the cooling-down effect at the back side is then used TR
2-TS
2Weigh.Fig. 2 clearly illustrates that, the storage tank of the embodiment of the invention has good temperature reduction performance with anticorrosion cooling integrative paint, when the reference sample surface temperature that scribbles aluminium paint reached 85 ℃ (temperature that summer, the aluminium paint surface can reach), the cooling-down effect at anticorrosion cooling coating surface and the back side was respectively 18 and 28 ℃.
Need to prove, test in the device of temperature reduction performance in the cooling coating chamber, light source in order to simulated solar heat is the reflection-type infrared lamp, in the spectral composition of its transmitting illuminant, infrared composition is in the majority, the visible light composition is less, and for very high reflectance (see figure 1) is arranged in the visible region, so the room temperature lowering performance test results should be less than its true temperature reduction performance.
In view of this radiating and cooling coating is mainly used in the cooling in summer of oil gas and Chinese workers' raw material storage tank, the index of correlation of this coating that now will survey and the quality and performance index of coating and desired this type of coating of People's Republic of China's petroleum industry standard is to such as table 1.
As can be seen from Table 1, the storage tank of the embodiment of the invention is up-to-standard with anticorrosion cooling integrative paint, coating has good solar heat reflection and infrared emissing ability, be aided with the good thermal insulation of high-quality hollow glass micropearl, the synergy of three kinds of cooling mechanisms is so that coating has good radiating and cooling effect.The radiating and cooling coating that also can be found out the embodiment of the invention by table 1 also has good alkali resistance, acid resistance and salt tolerance.Particularly importantly, owing to adopt pure acrylic latex to make the film forming base-material, this radiating and cooling coating has fabulous ageing-resistant performance, and its outdoor useful life longevity is excellent.
In a word, the environmentally friendly radiating and cooling coating of the high-weatherability of the embodiment of the invention is specially adapted to be exposed to open air and need to be on the oil gas and industrial chemicals storage tank of lowering the temperature summer, plays significantly anticorrosion, cooling, energy-conservation and water-saving result.
Claims (10)
1. a storage tank is characterized in that: be comprised of anti-corrosion primer, heat insulation intermediate layer coating and cooling investment precoat with environmentally friendly anticorrosion cooling integrative paint;
Described anti-corrosion primer is take acrylic emulsion as the film forming base-material, take the ferrotitanium powder as antirust color stuffing, take Paris white, blanc fixe powder and talcum powder as the physique filler, and is aided with auxiliary agent and water is formulated;
Described heat insulation intermediate layer coating is take acrylic emulsion as the film forming base-material, take hollow glass micropearl as thermal insulating filling, and is aided with auxiliary agent and water is formulated;
Described cooling investment precoat is take acrylic emulsion as the film forming base-material, take titanium dioxide, talcum powder, silica, hollow glass micropearl and far-infared ceramic powder as the cooling color stuffing, and is aided with auxiliary agent and water is formulated.
2. storage tank according to claim 1 is characterized in that with environmentally friendly anticorrosion cooling integrative paint: the raw material of described anti-corrosion primer forms as follows by weight ratio:
25～35 parts of acrylic emulsions;
25～32 parts in water;
5～8 parts in ferrotitanium powder;
3～7 parts of Paris whites;
4～6 parts in blanc fixe powder;
10～12 parts of talcum powder;
0.4～1.2 part of anti-sudden strain of a muscle rust agent;
0.5～0.8 part of sagging inhibitor;
1～2 part of dispersant;
0.2～0.6 part of wetting agent;
0.2～0.6 part of defoamer;
0.2～0.6 part of thickening leveling agent;
0.2～0.6 part of coalescents;
The raw material of described heat insulation intermediate layer coating forms as follows by weight ratio:
60～80 parts of acrylic emulsions;
6～9 parts in water;
18～25 parts of hollow glass micropearls;
0.1～0.5 part of dispersant;
0.1～0.5 part of wetting agent;
0.2～0.8 part of defoamer;
0.2～0.8 part of thickening leveling agent;
0.1～0.5 part of coalescents;
The raw material of described cooling investment precoat forms as follows by weight ratio:
20～65 parts of acrylic emulsions;
10～40 parts of titanium dioxides;
1～3.4 part of talcum powder;
2～5 parts of silica;
6～20 parts of hollow glass micropearls;
3～7 parts of far-infared ceramic powders;
0.1～0.5 part of dispersant;
0.05～0.32 part of wetting agent;
0.88～1.42 part of defoamer;
0.05～0.5 part of thickening leveling agent;
0.05～0.5 part of coalescents;
7～15 parts in water.
3. storage tank according to claim 1 is with environmentally friendly anticorrosion cooling integrative paint, it is characterized in that: described acrylic emulsion is mono-component aqueous pure acrylic latex, and its solid content is 45～48%, and viscosity is 1～6 Pa.s, the pH value is 7.5～9.5,23 ℃ of MFTs.
4. storage tank according to claim 1 is with environmentally friendly anticorrosion cooling integrative paint, and it is characterized in that: described ferrotitanium powder is 600 order white powders, and its P205 content is not less than 12%, and oil absorption is not more than 22%, and density is 2.8 ~ 3.5 g/cm
3, the pH value 7～10 in water slurry.
5. storage tank according to claim 1 is with environmentally friendly anticorrosion cooling integrative paint, it is characterized in that: the rutile type titanium white of described titanium dioxide for making with chloridising, content of titanium dioxide is not less than 91%, oil factor 17 g/100 g, the pH value 7.5～9.5 in water slurry.
6. storage tank according to claim 1 is with environmentally friendly anticorrosion cooling integrative paint, and it is characterized in that: the particle diameter of described hollow glass micropearl is 2～85 μ m, and real density is 0.40 g/cm
3, compression strength is 28～33 MPa.
7. storage tank according to claim 1 is with environmentally friendly anticorrosion cooling integrative paint, and it is characterized in that: described far-infared ceramic powder is the nanometer scale ceramics powder, and its granularity is 10～20 nm.
8. storage tank according to claim 1 is characterized in that with environmentally friendly anticorrosion cooling integrative paint: the agent of described anti-sudden strain of a muscle rust is colourless liquid, and its pH value is 8～9, and density is 1.5 g/cm
3Sagging inhibitor is white powder, and its pH value is 9～11.
9. storage tank according to claim 1 is with environmentally friendly anticorrosion cooling integrative paint, and it is characterized in that: described dispersant is the Sodium Polyacrylate saline solution, and its solid content is 45%; Wetting agent is APES, and its solid content is 100%; Defoamer is the mineral oil series mixture, and solid content is 100%; Coalescents is 2,2,4-trimethyl-1, the 3-pentanediol mono isobutyrate; The thickening leveling agent is non-ionic hydrophobic modified polyurethane levelling agent, and its solid content is 30%.
10. one kind such as the preparation method of storage tank as described in claim 2～9 any one with environmentally friendly anticorrosion cooling integrative paint, it is characterized in that: prepare respectively anti-corrosion primer, heat insulation intermediate layer coating and cooling investment precoat;
The preparation method of described anti-corrosion primer has the following steps:
Step 1, with acrylic emulsion, dispersant, wetting agent, anti-rust agent and the defoamer of dodging that takes by weighing by formula ratio in the liquid feed well, pump in the pulping tank by vacuum, behind time cleaning liquid feed well of 50～80% moisture in the formula ratio, in vavuum pump people pulping tank, in whipping process, load weighted ferrotitanium powder, Paris white, blanc fixe powder, talcum powder and sagging inhibitor are pumped in the pulping tank by vacuum successively, stir;
Step 2 pumps into sand milling dispersion in the sand milling tank with the suspension that makes by vacuum;
Step 3 pumps into the suspension behind the sand milling in the paint mixing tank by vacuum, adds coalescents and thickening leveling agent, sieves after the water adjusting coating viscosity with surplus, packing;
The preparation method of described heat insulation intermediate layer coating has the following steps:
Step 1, the acrylic emulsion, dispersant, wetting agent and the defoamer that take by weighing by formula ratio in the liquid feed well are pumped into pulping tank by vacuum, behind time cleaning liquid feed well of 50～80% moisture in the formula ratio, pump in the pulping tank by vacuum, in whipping process, load weighted hollow glass micropearl is pumped in the pulping tank by vacuum, stir;
Step 2 pumps into the suspension that makes in the paint mixing tank by vacuum, adds coalescents, thickening leveling agent under fixed rotating speed, add sieve after the excess water adjusting coating viscosity, packing; The preparation method of described cooling investment precoat has the following steps:
Step 1, with acrylic emulsion, dispersant, wetting agent and the defoamer that takes by weighing by formula ratio in the liquid feed well, pump into pulping tank by vacuum, behind time cleaning liquid feed well of 50～80% moisture in the formula ratio, pump in the pulping tank by vacuum, in the dispersed with stirring process, will pump in the pulping tank by vacuum by the load weighted titanium dioxide of prescription, talcum powder and silica, stir; With 1～5% aqueous dispersion far-infared ceramic powder in the formula ratio, more scattered far-infared ceramic powder suspension is pumped in the pulping tank, stir;
Step 2 pumps into sand milling dispersion in the sand milling tank with the suspension that makes by vacuum;
Step 3, suspension behind the sand milling is pumped in the paint mixing tank by vacuum, under fixed rotating speed, the hollow glass micropearl that adds formula ratio by the charging aperture on paint mixing tank top, after dispersed with stirring is even, add coalescents and thickening leveling agent from charging aperture, add sieve after the excess water adjusting coating viscosity, packing.
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