CN103725124B - High-radiation heat-insulated coating - Google Patents

High-radiation heat-insulated coating Download PDF

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Publication number
CN103725124B
CN103725124B CN201310332282.0A CN201310332282A CN103725124B CN 103725124 B CN103725124 B CN 103725124B CN 201310332282 A CN201310332282 A CN 201310332282A CN 103725124 B CN103725124 B CN 103725124B
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parts
heat
coating
resin
cenosphere
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CN103725124A (en
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陈照峰
王璐
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Suzhou Superlong Aviation Heat Resistance Material Technology Co Ltd
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Taicang Paiou Technology Consulting Service Co Ltd
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Abstract

The invention discloses a high-radiation heat-insulated coating which comprises the following components in parts by weight: 25-37 parts of infrared reflection pigments, 12-20 parts of aluminum-coated hollow microspheres, 15-28 parts of aerogel, 30-55 parts of organic resin, 0.1-0.2 part of a wetter, 0.36-0.47 part of a dispersant, 0.3-0.9 part of a defoamer, 0.02-0.1 part of a preservative, 0.02-0.1 part of a mildew preventive, 0.52-1.12 parts of a thickener, 1.2-2.4 parts of a film-forming aid and 0.03-0.18 part of a pH value regulator. The coating is provided with a plurality of photo-thermal reflection layers and heat-insulated barriers, has a good heat-insulated effect capable of reaching more than 98%, and is excellent in mechanical performance, large in adhesive force, good in weather resistance, water resistance, stain resistance, scrub resistance and the like, safe, environment-friendly and wide in application range.

Description

A kind of high radiation heat insulation coating
Technical field
The present invention relates to a kind of insulating moulding coating, more particularly to a kind of high radiation heat insulation coating.
Background technology
Building energy conservation occupies main positions in national energy-conservation, and the material such as the polyphenyl class of employing, extrusion molding class passes through attachment and bag at present The construction technology such as wrap up in and building is thermally shielded with insulation although these materials also can play thermal insulation function, but these materials Exist easy firing, pollution environment, complicated construction technique, service life short the shortcomings of.Therefore, start outside development architecture in industry Surface heat-reflecting insulating coating, is coated on body surface and is raised due to shining upon the surface temperature causing with reducing, reach heat The purpose of light reflective insulation energy conservation.
A kind of heat-reflecting insulating coating for outer surface of building and its system is disclosed in the Chinese patent of Application No. 201010044807.7 Preparation Method, including following component:Aqueouss soap-free polymerization copolymer emulsion, titanium dioxide, boron-containing glass microballon, ceramics, filler, Wetting agent, dispersant, thickening agent, defoamer, coalescents, propylene glycol, water.Prepared coating does not contain heavy metal, nontoxic Pollution-free, it is a kind of environmental friend type multifunction energy-saving coatings, not only increases the reflecting properties to sunlight heat for the exterior wall, reduce Exterior wall thermal-radiating absorption to sunlight, thus reducing the table temperature of building, has reached the effect of heat-insulating and energy-saving.
A kind of waterborne reflective heat-insulating building coating is disclosed, by weight once in the Chinese patent of Application No. 201210565165.4 The raw material of number is made:Acrylic emulsion 40-60 part, titanium dioxide 5-15 part, cenosphere 2-6 part, ceramics 3-7 part, Dispersant 1-5 part, defoamer 3-6 part, preservative 1-4 part, thickening agent 3-8 part, coalescents 6-10 part, antifreezing agent 3-9 Part.This invention has weatherability, temperature-change resistance, stain resistance, is a kind of energy-conserving and environment-protective, long service life, sun emissivity High waterborne reflective heat-insulating building coating.
A kind of insulating moulding coating of reflection sun heat ray is disclosed, it is bottom of by the Chinese patent of Application No. 200710035834.6 Apply coating to constitute with painting coating two parts, in described bottom-coating, solidss mass percent is:Hollow beads heat-barrier material 5-40%, heat-reflecting material 10-50%, binding agent macromolecule resin 10-70%;In painting coating, solidss mass percent is: Surface coating reflects heat ray composite 5-40%, heat-reflecting material 10-50%, binding agent macromolecule resin 10-70%, does During coating thickness 0.3-0.5mm, 85-90% can be reached to the total reflectivity of heat ray, can effectively prevent sun heat radiation.
A kind of reflective heat-insulation paint for building is disclosed in the Chinese patent of Application No. 201210420412.1, in parts by weight, Including following component:9.5~23 parts of water, 0.44~1.08 part of thickening agent, 0.45~0.55 part of dispersant, 0.1~0.2 part of wetting agent, 0.4~0.8 part of defoamer, 0.05~0.25 part of multifunctional assistant, 0.05~0.15 part of preservative, 0.05~0.25 part of antifungus agent, titanium 15~25 parts of white lead, 0~22.5 part of nano heat-insulating slurry material, 2~6.5 parts of filler, 1~2 part of antifreezing agent, coalescents 1.25~2 Part, 0.01~0.02 part of emulsifying agent, 25~40 parts of emulsion, 2.5~5 parts of water-repelling agent, 0.05~0.15 part of pH value regulator, phosphorus 0.02~0.07 part of sour tributyl.After the coating film forming of this invention, there is good hydrophobicity on surface, has hydrophobic waterproof self-cleaning function, And the heat-proof quality of film can be improved.
But the heat-reflecting insulating coating being previously mentioned in above-mentioned patent is all used cenosphere as heat-barrier material, with filler, pigment, Auxiliary agent etc. carries out directly single mixing.Because always floating on the top layer of cladding material system during its Surface coating heat-reflecting material, Therefore need to make it mix by strong stirring in preparation process to be uniformly dispersed.And cenosphere wall is thin, in strong stirring process In, cenosphere cracky leads to the heat-proof quality of coating to reduce;Another aspect cenosphere dispersion effect in water is poor, is formed Clad uneven, the reflection efficiency to heat ray for the impact.Meanwhile, the reflection thermal efficiency of existing heat-reflecting insulating coating and every Heat energy power is in urgent need to be improved.Therefore, a kind of effect of heat insulation integrating obstruct, reflection and three kinds of heat-insulated modes of radiation of exploration reaches More than 98% high radiation heat insulation coating becomes a study hotspot now.
Content of the invention
It is contemplated that overcoming the shortcomings of existing heat-reflecting insulating coating technology of preparing, there is provided a kind of high radiation heat insulation coating.Should Plant the thinking that high radiation heat insulation coating had both employed conventional outer wall external thermal insulation " blocking up ", extraneous heat is interposed between the outside of building basic unit And save in heat-insulation layer, again using the design concept of " dredging ", instant for the energy of sunlight is reflected away, and will build in good time The heat building accumulation is discharged in the way of infrared it is ensured that its high effect of heat insulation.
For the problems referred to above, the present invention provides a kind of high radiation heat insulation coating technology scheme:
A kind of high radiation heat insulation coating is it is characterised in that include each component of following parts by weight:Infrared reflecting paint 25-37 part, Cenosphere 12-20 part of aluminizing in surface, aeroge 15-28 part, organic resin 30-55 part, other auxiliary agents 2.55-5.47 part.
Described infrared reflecting paint is metal-oxide titanium dioxide, manganese oxide, nickel oxide, iron sesquioxide, three oxidations two One or more of chromium, cobalt oxide and nitrate, calcine through 1000 DEG C of high temperature above after acetate mixing, the metal in raw material Ion and oxonium ion rearrange, and form more stable spinel structure or Rutile structure;Again due to rectangle pigment particles Specific surface area much bigger compared with spherical, and light scattering degree is directly proportional to scattering area, so the photo-thermal of rectangle titanium dioxide is anti- Rate of penetrating is higher, it is therefore highly preferred that pigment particles are shaped as rectangular Rutile type titanium dioxide, its particle diameter is 200-500nm.
The cenosphere aluminized in described surface adopts the method such as chemical vapor deposition, vacuum sputtering, ion plating in cenosphere table Face uniformly coats one layer of aluminium foil, and the thickness of aluminium foil is 0.05-3 μm, and clad is one layer to multilamellar;Meanwhile, the solid film forming of coating Form the nearly vacuum body group of the spherical hollow bead particles composition of a coating layer thickness afterwards in coating, volume accounts for whole coating layer thickness More than 50%, form thermal resistance barrier effectively together.
Described aeroge is SiO2One or more of aeroge, organic aerogel and carbon aerogels, aeroge be a kind of by Colloidal particle or high-polymer molecular are cross-linked with each other the light nanoporous material with spacial framework of composition, and porosity is up to 80%~99.8%, typical pore is smaller in size than 50nm, network colloidal particle size 3~20nm, thus effectively limit solid State conduction of heat and gaseous heat conduction are so as to have extremely low thermal conductivity at normal temperatures;The heat radiation of aeroge is to occur at 3-5 μm Infrared emanation in region, its heat radiation thermal conductivity raises with temperature and increases sharply, after mixing infrared reflecting paint, then Greatly reduce the conduction of heat being caused by infrared emanation, its thermal conductivity at room temperature, at a normal reach respectively 0.018W/m K and 0.012W/m K, low can reach 0.004W/m K under vacuum, become the strong heat shield of high radiation heat insulation coating.
Described organic resin is acrylic resin, organosilicon modified crylic acid resin, alkyd resin, organic-silicon-modified alkyd tree Fat, fluorine resin, epoxy resin, chlorinated rubber etc., can be applied in the present invention with solution or emulsion state.
Other described auxiliary agents include the component of following parts by weight:Wetting agent 0.1-0.2 part, dispersant 0.36-0.47 part, disappear Infusion 0.3-0.9 part, preservative 0.02-0.1 part, antifungus agent 0.02-0.1 part, thickening agent 0.52-1.12 part, coalescents 1.2-2.4 Part, pH value regulator 0.03-0.18 part.
The described dry-coated film thickness of high radiation heat insulation coating is 0.3-1mm.
Main advantages of the present invention are:1. the aluminium foil reflexivity of cenosphere outer cladding is high, can be used for intercepting high temperature heat radiation, many Layer aluminum face achieves the secondary reflection again after coating surface infrared reflecting paint, substantially increases photothermal reflectance effect;2. aluminium foil is same The protective layer of Shi Zuowei cenosphere is it is ensured that it will not damage under strong stirring;3. the addition of aeroge makes effect of heat insulation exist Greatly improve on the basis of cenosphere originally, the high radiation heat insulation coating heat-proof quality of preparation is good.4. safety and environmental protection, nontoxic nothing Taste, to environment and personnel's fanout free region;5. excellent weatherability, resistance to water, stain resistance, abrasion resistance etc.;6. stable performance, Not stratified, there is an excellent mechanical performance, excellent adhesive force;7. applied widely, be applicable to reduce building metal roof, The surface temperature of exterior wall simultaneously shields to its surface;Reduce pipeline, valve, the burning sensation of low-temperature (low temperature) vessel and loss of refrigeration capacity etc..
Specific embodiment
With reference to specific embodiment, be further elucidated with the present invention it should be understood that these embodiments be merely to illustrate the present invention rather than Limit the scope of the present invention, after having read the present invention, the modification of the various equivalent form of values to the present invention for the those skilled in the art All fall within the application claims to be limited.
Embodiment 1
A kind of high radiation heat insulation coating, including each component of following mass fraction:
12 parts of the cenosphere aluminized in 25 parts of Rutile type titanium dioxide, surface, SiO215 parts of aeroge, acrylic resin 50 Part, 0.1 part of wetting agent, 0.36 part of dispersant, 0.3 part of defoamer, 0.02 part of preservative, 0.02 part of antifungus agent, thickening agent 0.7 part, 1.2 parts of coalescents, 0.09 part of pH value regulator.
Embodiment 2
A kind of high radiation heat insulation coating, including each component of following mass fraction:
18 parts of the cenosphere aluminized in 30 parts of Rutile type titanium dioxide, surface, 23 parts of carbon aerogels, organic-silicon-modified alkyd tree 42 parts of fat, 0.15 part of wetting agent, 0.4 part of dispersant, 0.35 part of defoamer, 0.03 part of preservative, 0.03 part of antifungus agent, 0.6 part of thickening agent, 1.8 parts of coalescents, 0.1 part of pH value regulator.
Above are only two specific embodiments of the present invention, but the design concept of the present invention be not limited thereto, all using this structure Think the present invention is carried out with the change of unsubstantiality, the behavior invading the scope of protection of the invention all should be belonged to.In every case it is without departing from this The content of inventive technique scheme, any type of simple modification above example made according to the technical spirit of the present invention, etc. With change and remodeling, still fall within the protection domain of technical solution of the present invention.

Claims (1)

1. a kind of high radiation heat insulation coating is it is characterised in that include each component of following parts by weight:Cenosphere 12-20 part of aluminizing in infrared reflecting paint 25-37 part, surface, aeroge 15-28 part, organic resin 30-55 part, other auxiliary agents 2.55-5.47 part;Described infrared reflecting paint is calcined through 1000 DEG C of high temperature above after being mixed with nitrate, acetate for one or more of metal-oxide titanium dioxide, manganese oxide, nickel oxide, iron sesquioxide, chromic oxide, cobalt oxide, more stable spinel structure or Rutile structure that the metal ion in raw material and oxonium ion are formed after rearranging;The cenosphere aluminized in described surface adopts one of chemical vapor deposition, vacuum sputtering, ion plating method in one layer of aluminium foil of cenosphere coated with uniform, and the thickness of aluminium foil is 0.05-3 μm, and clad is one layer to multilamellar;Described aeroge is SiO2One or more of aeroge, organic aerogel and carbon aerogels;Described organic resin is solution or the acrylic resin of emulsion state, organosilicon modified crylic acid resin, alkyd resin, silicone alkyd, fluorine resin, epoxy resin, chlorinated rubber;Other described auxiliary agents include the component of following parts by weight:Wetting agent 0.1-0.2 part, dispersant 0.36-0.47 part, defoamer 0.3-0.9 part, preservative 0.02-0.1 part, antifungus agent 0.02-0.1 part, thickening agent 0.52-1.12 part, coalescents 1.2-2.4 part, pH value regulator 0.03-0.18 part;The dry-coated film thickness of described coating is 0.3-1mm.
CN201310332282.0A 2013-08-02 2013-08-02 High-radiation heat-insulated coating Active CN103725124B (en)

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