CN1524909A - Nanometer heat insulation reflecting coatings for grain-oil packhouse - Google Patents
Nanometer heat insulation reflecting coatings for grain-oil packhouse Download PDFInfo
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Abstract
The invention relates to the field of paint technology, in particular a nano heat insulating reflecting paint for grain and oil warehouse with fine heat insulation effect, wherein the paint comprises priming paint and top-coat whose constituents are, synthetic resin emulsion, water, heat-insulation material, nano material, reflecting material, color filling and paint auxiliary agent.
Description
Technical field:
The invention belongs to technical field of coatings, particularly be the nano heat-insulating reflective coating that a kind of grain, bunker storehouse are used.
Background technology:
Along with the progress of science and technology and the raising of economic level, and China's entry into the WTO, grain, oil storage have also been proposed more and more higher requirement.Realizing low-temperature grain-storage, oil storage by the transformation to the warehouse, is one of important factor that helps the warehousing industry development.Because the improvement of warehouse insulation can reduce temperature in the storehouse, help energy efficient, reduce grain storage, oil storage cost, improve grain, oil quality, adapt to the environmental protection needs.
Grain, oily reserve storage mainly exist summer, top, warehouse in autumn to make internal temperature rapid rising the in storehouse be unfavorable for the problem of grain, oily stored safely because of absorbing solar thermal energies or other heat energy in a large number, thereby require to create the ecological safely deposit environment of " accurate low temperature " or " low temperature " to grain storage, oil storage now.The technical study of the low temperature of China storage at present still has many deficiencies, be that grain, the reconstruction of bunker storehouse structure, the use or the research of extraordinary lagging material of equipment are all had certain one-sidedness, participate in world economic integration challenges of competition and impact, require us the research of low-temperature grain-storage, oil storage more to be had the ecological awareness, environmental consciousness and cost consciousness.Therefore develop and a kind ofly have lagging material that widespread use is worth and can carries out and seem and be even more important.The present invention is exactly grain, the bunker storehouse nano heat-insulating reflective coating product of developing under the needs of response country storage research.
Traditional building coating is divided into oil paint and water-borne coatings two big classes usually, oil paint contains objectionable impuritiess such as organic solvent evaporates thing and heavy metal, and human body and environment are had certain hazardness, is come at present after the automobile, classify the main air pollution source in city as, progressively be eliminated.Though common water-borne coatings solvent burst size is far smaller than oil paint, and is also better with the consistency of environment, because of its anti-ultraviolet property poor, easily stain, the deficiency of performances such as its waterproof, anti-soda acid, scrubbing resistance is a greater impact work-ing life, mainly plays the attractive, decorative effect.Storage need solve the pollution problem of oil paint to environment with thermal insulating coating, remedies the deficiency on the water-borne coatings physicals, and has actual heat-insulating cooling effect.
Emerge a lot of researchs in recent years both at home and abroad to thermal insulating coating, and many patents of invention have been declared, but problems such as the research of the thermal insulating coating that grain, bunker storehouse are used is also few, and the research ubiquity form of thermal insulation of relevant thermal insulating coating is single, and effect of heat insulation is undesirable.The patent No. is 99114454.6 radioresistant insulating water paint, belongs to the category of common water-borne coatings, and is owing to being single layer coating and not adding nano material, not ideal enough to the reinforcement of coating physicals; Number of patent application is high-elasticity nanometer paint of 00125488.X and preparation method thereof, network-like physicochemical property and the sticking power of filming that has utilized nano material in material, to form to inlay with enhancing, this coating is mainly used in the antiseep of metope and aspect, does not almost have heat insulation effect; Number of patent application is 01102763.0 uvioresistant, infrared rays energy-saving coatings, be to have added nano material, research and the functional coating that utilizes its ultraviolet ray, ultrared principle of reflection to make to 75～80% various wavelength, but its single layer coating character and single radiation heat insulation channel are restricted self heat-proof quality; Number of patent application is 01123586.1 novel aqueous environment protecting and high performance nanometer latex paint for inner and outer wall, the nano material that adds is the modification to physicals, make a search at heat insulation specially, the raising of its heat-insulating capability is limited, is usually used in the decorations of common interior exterior wall surface; Number of patent application is 02109969.3 nanometer acrylic acid microemulsion, water-thinned heat reflecting and isolating paint and manufacture method thereof, what use is that nanometer micro-emulsion but not nanopowder are to modified paint, have the single characteristics of heat insulation channel equally, manufacture method is also complicated, is unfavorable for promoting.
Summary of the invention:
The objective of the invention is provides a kind of grain and oil warehouse nano heat-insulating reflective coating with excellent effect of heat insulation for overcoming the problem that above-mentioned various water-based (nanometer) coating exists.
The object of the present invention is achieved like this:
Grain of the present invention, bunker storehouse nano heat-insulating reflective coating are made up of priming paint and finish paint.Mark by weight
(1) component of priming paint and content are:
Water-latex type synthetic polymer emulsion 35～45%
Water 25～35%
Nanometer heat insulation material 5～10%
Coatings additive(s) 5～10%
(2) component of finish paint and content are:
Water-latex type synthetic polymer emulsion 35～45%
Water 20～30%
Nano material 1～10%
Light reflecting material 20～30%
Coatings additive(s) 4～10%
Above-mentioned water-latex type synthetic polymer emulsion adopts is a kind of in silicone resin emulsion, styrene-propene yogurt liquid, acrylate copolymer emulsion, organosilicon-ACRYLIC EMULSION, aqueous epoxy resin emulsion, the aqueous polyurethane emulsion.
Above-mentioned lagging material is vermiculite, sepiolite, float pearl, in ceramic bubbles and modified micaceous, pearlstone, the silico-aluminate one or more.
Above-mentioned color stuffing is one or more in talcum powder, dicalcium powder, glass microballon, titanium dioxide, red iron oxide, zinc oxide, iron oxide yellow, the zinc sulfide white.
Above-mentioned nano material is one or more in nano-calcium carbonate, nano titanium oxide, nano zine oxide, nanometer scale ceramics bubble, the nano silicon.
Above-mentioned light reflecting material is one or more in titanium dioxide, red iron oxide, zinc oxide, iron oxide yellow, pearl mica, the aluminium powder.
Good heat insulation and heat control material or coating should have good three kinds of performances of heat insulation, reflective and ir radiation.In order to make coating have excellent effect of heat insulation, the best way makes three kinds of influence factors all play a positive role in coating exactly.By the heat insulation experiment of a large amount of subitems contrast and test, we have selected to be combined into coating based on the priming paint of heat insulation, thermal radiation with based on reflective finish paint.The heat-proof quality of heat insulation primer coating depends on the thermal conductivity size of pigment extender.With the modified aluminosilicate is example, its thermal conductivity≤0.07w/mk (measuring) by Sichuan Province's building scientific research institute, its porosity reaches 80～90% (being measured by Chengdu Branch of the Chinese Academy of Sciences), its porosity generally reaches Subnano-class not (about 600mm), wherein has 10% hole to reach nano level (100mm).The heat conductivility of this material self is superior, does the thermal insulation contrast experiment with the finish paint compound coating, proves than domestic like product good cooling effect.
Select for use part thermal resistance reflective all preferably material improve the heat-proof quality of finish paint, also can reduce the cost of coating, make coating have high cost performance and excellent generalization values.Finish paint has 83～92.5% reflecting rate to visible light, and reflecting effect is good.
The infrared window of atmospheric layer in 8～13.5 mum wavelengths is another important channel of cooling. according to factors such as material particle size and thermal characteristicss, determined infrared radiant material to be used for priming paint, and prove the excellent effect of heat insulation of finish paint priming paint compound by experiment, effect shows that the integral heat-insulation property of composite coating is good, and the thermal emissivity rate that gets coating after tested is 91% (Inst. of Physics, CAS's mensuration).
Below, we have a look at the modification of nano material to coating: purpose is to be based on improving the heat-proof quality of coating, increases the added value that coating is used on grain, bunker storehouse, and the sci-tech product of wound high performance-price ratio is to reach the heat insulation needs of warehouse.It is compound to add a kind of inferior nano material and finish paint, and material monomer is a micron level, four needle-likes, (as shown in Figure 1).The tip portion Nano grade has photocatalytic activity, the degradable greasy dirt.This material forms conductive network in coating, the good result of static resistance is arranged.Because degraded greasy dirt and anlistatig effect make coating that good self-cleaning and resistance to soiling arranged.This is heat insulation helpful to reflectorizing of paint, is the guarantee that coating can keep good reflection and heat insulation for a long time.The surface resistivity that measuring goes out coating is 1.62 * 10
-2M Ω (southwestern Shanghai Communications University macromolecular material institute measure) has good antistatic effect.
Add a kind of nano material, make coating and nano material be formed with H.D hybrid material, it had both had the organic materials good film-forming property concurrently, the characteristics that snappiness is good, organic and/or inorganic materials uninflammability, scuff resistance again, advantages such as weathering resistance, high rigidity.The abrasion resistance that the unusual effect of nano material can make coating improves more than 2 times by original 1000 times.Its thixotropy, erosion resistance and weather resisteant also have sizable raising.
Different nano materials is used in and has different characteristics and effect in the coating.As long as can handle dispersion and the flocculation of nano material in coating well, it will make coating have new adeditive attribute, as uvioresistant, germ resistance and mildew resistance.If this coating is used for interior wall coating, bactericidal mould proof effect is efficiently not only arranged but also can decompose the objectionable impuritiess such as the formaldehyde that, acetone of dissociating such as house decoration material therefor and furniture, can improve greatly people living environment, purify air.
In sum, silo of the present invention has the advantage of following all many-sides with the nano heat-insulating reflective coating, sees table 1 for details.
Table 1
| Sequence number | Interventions Requested | Country's acceptable end product standard | Assay |
| ????1 | Condition in container | No lump is uniform state after mixing | |
| ????2 | Application property | It is accessible to brush two roads | |
| ????3 | Water tolerance, 96h | No abnormal | |
| ????4 | Low-temperature stability | Never degenerate | |
| ????5 | Time of drying (surface drying), h≤ | ????2 | |
| ????6 | Artificial ageing resistance | 400h is non-foaming, does not come off flawless | |
| ????7 | Appearance of film | Normally | |
| ????8 | Abrasion resistance, inferior 〉= | ????1000 | ????2400 |
| ????9 | The inferior circulation of coating temperature-change resistance (5) | No abnormal | No abnormal |
| ????10 | Contamination resistance (white and light color), %≤ | ????15 | ????8 |
| ????11 | Volatile organic content (g/L) | ????200 | ????177 |
| ????12 | Heavy metal content≤mg/Kg | ||
| Plumbous | ????90 | ????3.82 | |
| Cadmium | ????75 | ????5.61 | |
| Chromium | ????60 | Do not detect | |
| Mercury | ????60 | Do not detect | |
| ??13 | Bonding strength (kPa) | ????- | ????245 |
| ??14 | Surface resistivity (M Ω) | ????- | ????1.62×10 -2 |
| ??15 | Absorptivity≤(%) | ????- | ????0.15 |
| ??16 | Visible reflectance (%) | ????- | ????91.5 |
| ??17 | Thermal emissivity rate (%) | ????- | ????91 |
| ??18 | Material thermal conductivity≤(W/mk) | ????- | ????0.070 |
This grain, bunker storehouse nano heat-insulating reflective coating are coated on the warehouse of concrete structure or steel plate structure, heat-insulating cooling effect is: top, storehouse, the warehouse temperature-averaging of steel plate structure has reduced by 11.2 ℃, 19.6 ℃ of maximum temperature differences, temperature-averaging has reduced by 12.5 ℃ in the storehouse, 18.4 ℃ of maximum temperature differences; Top, storehouse, the warehouse temperature-averaging of concrete structure has reduced by 12.4 ℃, 16.5 ℃ of maximum temperature differences, and temperature-averaging has reduced by 8.6 ℃ in the storehouse, 11 ℃ of maximum temperature differences.
Grain, bunker storehouse nano heat-insulating reflective coating film forming matter are that water is the synthetic emulsion of thinner, and the color stuffing thermal conductivity in the constituent is low, reflective function good.Coating adhesion is strong, weather resistance good, antistatic surface, nontoxic pollution-free, environmental friendliness, thin (0.5～0.8mm) the heat-insulating cooling effect excellence of coating.
The production method of grain of the present invention, bunker storehouse nano heat-insulating reflective coating is as described below:
Priming paint production method: earlier the 1st among the embodiment mixed to the 9th component, adding the functional material material of receiving fully stirs, continue to add color stuffing, lagging material, the thermal radiation material is dispersed into base-material in homogenizer, pump into grinding machine for grinding, start high speed dispersor and add emulsion, flow agent, thickening material successively respectively.Stir after-filtration, promptly get the priming paint of grain, bunker storehouse nano heat-insulating reflective coating.
Finish paint production method: earlier the 1st among the embodiment mixed to the 9th component, add functional nanomaterials and color stuffing, light reflecting material is dispersed into base-material in homogenizer, pump into grinding machine for grinding, start high speed dispersor and add emulsion, flow agent, thickening material successively respectively.The after-filtration that is uniformly dispersed promptly gets the finish paint of grain, bunker storehouse nano heat-insulating reflective coating.
Description of drawings:
Fig. 1 is the inferior nano material monomer structure synoptic diagram of grain of the present invention, bunker storehouse nano heat-insulating reflective coating.
Fig. 2 is the temperature measuring equipment synoptic diagram of grain of the present invention, bunker storehouse nano heat-insulating reflective coating.Wherein 1 is voltage stabilized source, the 2nd, platinum probe, the 3rd, tungsten-iodine lamp, the 4th, support, the 5th, the surface scribbles the empty galvanized sheet iron bucket of grain and oil warehouse with the nano heat-insulating reflective coating, the 6th, be coated with the empty galvanized sheet iron bucket of coating, the 7th, temperature polling instrument, the 8th, cystose, the 9th, envrionment temperature, the 10th, core temperature, the 11st, inner wall temperature, the 12nd, outside wall temperature.
Embodiment:
As shown in Figure 2, (diameter is 28cm at galvanized sheet iron bucket 5, high 40cm, thick 1mm, surface-area 0.413m2) experimentizes on, grain of the present invention, bunker storehouse evenly are applied in the surface of iron sheet barrel 5 with the nano heat-insulating reflective coating, carry out the cooling-down effect contrast of heat insulation reflecting respectively with empty galvanized sheet iron bucket 6.Experiment is positioned over two iron sheet barrels 5,6 on the cystose 7 in the thermostatic chamber, sealed bottom, use two tungsten-iodine lamps 3 (parallel longitudinal arrangement) equidistantly two iron sheet barrels 5,6 to be heated up simultaneously, the outer wall 12 of test iron sheet barrel 5, inwall 11, the temperature of central point 10 takes this to measure the heat-proof quality of coating of the present invention.
With priming paint, priming paint+finish paint, putty+priming paint+finish paint spread upon respectively on the galvanized sheet iron bucket 5 of hollow, and contrast with empty galvanized sheet iron bucket 6.Under the same conditions, each sample sees Table 2 with cooling-down effect that empty galvanized sheet iron bucket 6 is compared behind the 0.5h that heats, 1.5h, 2.5h.
Table 2
Specific embodiments of the invention are shown in table 3 and table 4.Table 3 is the specific embodiment 1～6 of priming paint of the present invention.Table 4 is finish paint embodiment 1～6 of the present invention.
Table 3
| The content composition | ????1 | ????2 | ????3 | ????4 | ????5 | ????6 |
| Water | ????360 | ????300 | ????370 | ????420 | ????250 | ????440 |
| Dispersion agent (PA-02) | ????3 | ????3.9 | ????4.3 | ????4.8 | ????2.4 | ????5 |
| Dispersion agent (DA-01) | ????1.8 | ????2.3 | ????2.4 | ????3 | ????1.5 | ????3 |
| Dispersion agent (3204) | ????6.1 | ????7.8 | ????8.5 | ????1 | ????4.9 | ????1 |
| Sanitas (LFM) | ????6.1 | ????7.8 | ????8.5 | ????9.5 | ????4.8 | ????10 |
| Defoamer (VP0011) | ????1.7 | ????2.2 | ????2.4 | ????2.8 | ????1.4 | ????2.8 |
| Multifunctional assistant (AMP-95) | ????1.2 | ????1.5 | ????1.7 | ????2 | ????1 | ????2 |
| Propylene glycol | ????12.2 | ????15.6 | ????17.1 | ????19 | ????9.5 | ????20 |
| Film coalescence aid (Texanol) | ????8.5 | ????10.9 | ????12 | ????14.5 | ????7 | ????15 |
| Titanium dioxide | ????15 | ????20 | ????15 | ????24 | ????12 | ????25 |
| The nano ceramics bubble | ????10 | ????25 | ????0 | ????15 | ????10 | ????10 |
| Zinc sulfide white | ????0 | ????20 | ????30 | ????0 | ????20 | ????0 |
| Zinc oxide | ????0 | ????20 | ????20 | ????20 | ????0 | ????25 |
| Talcum powder | ????25 | ????0 | ????0 | ????20 | ????20 | ????30 |
| Sepiolite | ????0 | ????150 | ????20 | ????20 | ????30 | ????0 |
| Modified aluminosilicate | ????160 | ????180 | ????150 | ????200 | ????140 | ????250 |
| Mica | ????0 | ????40 | ????50 | ????0 | ????20 | ????0 |
| HEC(2％) | ????30.5 | ????39 | ????42.7 | ????48 | ????23.8 | ????50 |
| Pure-acrylic emulsion (pure third 2000) | ????183 | ????234 | ????256 | ????300 | ????150 | ????300 |
| Thickening material (ATX-01) | ????7 | ????9 | ????10 | ????11.8 | ????5.5 | ????12 |
| Thickening material (612) | ????2.2 | ????2.8 | ????3.1 | ????3.8 | ????1.8 | ????4 |
| Flow agent (enlightening is high by 480) | ????1.5 | ????1.9 | ????2.1 | ????2.4 | ????1.2 | ????2.5 |
Table 4
| The content composition | ????1 | ????2 | ????3 | ????4 | ????5 | ????6 |
| Water | ????400 | ????250 | ????320 | ????350 | ????400 | ????200 |
| Dispersion agent (JS-A206) | ????1.3 | ????0.8 | ????1 | ????1.2 | ????1.3 | ????0.6 |
| Dispersion agent (DP-512) | ????8 | ????5 | ????6 | ????7 | ????8 | ????4 |
| Dispersion agent (3204) | ????2.6 | ????1.7 | ????2 | ????2.3 | ????2.6 | ????1.3 |
| Wetting agent (Henel 875) | ????2.6 | ????1.7 | ????2 | ????2.3 | ????2.6 | ????1.3 |
| Hydrophobizing agent (HF200) | ????3 | ????2.5 | ????3 | ????3 | ????3 | ????1.5 |
| Anticorrosion (LFM) | ????26.5 | ????16.7 | ????22 | ????22 | ????26.5 | ????13.3 |
| Defoamer (Bevaloid 618F) | ????7.5 | ????4.7 | ????5.5 | ????6 | ????7.5 | ????3.8 |
| Multifunctional assistant (AMP-95) | ????5.3 | ????3.3 | ????4 | ????4 | ????5.3 | ????2.6 |
| Propylene glycol | ????53 | ????33 | ????40 | ????40 | ????50 | ????25 |
| Film coalescence aid (Texanol) | ????40 | ????25 | ????30 | ????30 | ????40 | ????20 |
| Titanium dioxide | ????60 | ????40 | ????70 | ????50 | ????50 | ????25 |
| Zinc oxide | ????624 | ????400 | ????520 | ????600 | ????630 | ????360 |
| Pearl mica | ????0 | ????30 | ????0 | ????20 | ????0 | ????0 |
| Iron oxide yellow | ????1.5 | ????0 | ????0 | ????0 | ????1.5 | ????1.5 |
| Red iron oxide | ????0 | ????1.5 | ????0 | ????1.5 | ????0 | ????0 |
| Nano zine oxide | ????14 | ????0 | ????10 | ????0 | ????10 | ????0 |
| Nano silicon | ????0 | ????20 | ????8 | ????10 | ????0 | ????0 |
| Nano titanium oxide | ????0 | ????30 | ????6 | ????0 | ????0 | ????10 |
| ZnOw | ????40 | ????8 | ????10 | ????15 | ????30 | ????12 |
| Pure-acrylic emulsion (BC-2021) | ????800 | ????520 | ????600 | ????700 | ????800 | ????400 |
| Thickening material (AT-06) | ????95 | ????60 | ????70 | ????84 | ????95 | ????44 |
| Thickening material (612) | ????12 | ????7.5 | ????9 | ????10.5 | ????12 | ????6 |
| Flow agent (Henel 2000D) | ????13 | ????8 | ????10 | ????11.5 | ????13 | ????7.5 |
Use grain of the present invention, bunker storehouse nano heat-insulating reflective coating, handle grain, surface, bunker storehouse by traditional mode after, brush (or roller coat or spraying) heat insulation priming paint 3 times, finish paint 2 times.The coating mean thickness is 0.8mm.
Claims (6)
1, a kind of grain, bunker storehouse nano heat-insulating reflective coating are made up of priming paint and finish paint, it is characterized in that percentage ratio by weight.
(1) component of priming paint and content are:
Water-latex type synthetic polymer emulsion 35～45%
Water 25～35%
Lagging material 10～25%
Nanometer heat insulation material 5～10%
Color stuffing 5～15%
Coatings additive(s) 5～10%
(2) component of finish paint and content are:
Water-latex type synthetic polymer emulsion 35～45%
Water 20～30%
Nano material 1～10%
Light reflecting material 20～30%
Color stuffing 10～20%
Coatings additive(s) 4～10%.
2, grain according to claim 1, bunker storehouse nano heat-insulating reflective coating, that it is characterized in that the water-latex type synthetic polymer emulsion adopts is a kind of in silicone resin emulsion, styrene-propene yogurt liquid, acrylate copolymer emulsion, organosilicon-ACRYLIC EMULSION, aqueous epoxy resin emulsion, the aqueous polyurethane emulsion.
3, grain according to claim 1, bunker storehouse nano heat-insulating reflective coating is characterized in that lagging material is vermiculite, sepiolite, floats in pearl, ceramic bubbles and modified micaceous, pearlstone, the silico-aluminate one or more.
4, grain according to claim 1, bunker storehouse nano heat-insulating reflective coating is characterized in that color stuffing is one or more in talcum powder, dicalcium powder, glass microballon, titanium dioxide, red iron oxide, zinc oxide, iron oxide yellow, the zinc sulfide white.
5, grain according to claim 1, bunker storehouse nano heat-insulating reflective coating is characterized in that nano material is one or more in nano-calcium carbonate, nano titanium oxide, nano zine oxide, nanometer scale ceramics bubble, the nano silicon.
6, grain according to claim 1, bunker storehouse nano heat-insulating reflective coating is characterized in that light reflecting material is one or more in titanium dioxide, red iron oxide, zinc oxide, iron oxide yellow, pearl mica, the aluminium powder.
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