A kind of transparent heat insulating glass
Technical field
The present invention relates to a kind of transparent heat insulating glass, relate in particular to a kind of nano transparent heat-insulating coating, have the heat-protecting glass of good heat-proof quality, can be widely used in occasions such as automotive window, building window.
Background technology
In the prior art, the solution of the heat-insulating problem of glass adopts the mode of pad pasting, sheathing paper to realize usually.Common sunshade film, sheathing paper no doubt can sunshades, also stopped penetrating of visible light, influence sight line.
Show that according to data Chinese patent CN93110358.4 (preparation method of glass transparent insulating film and nozzle specially used) adopts atmospheric pressure chemical vapor deposition technology to form transparent heat-insulated film at glass surface.
The preparation method that the Chinese patent CN98100128.9 preparation method of frost-removing coated glass (heat insulation) has invented a kind of heat insulation coated glass, it is characterized in that: the indium stannum alloy ceramic target is splashed to the transmittance that is heated to 260~350 ℃ greater than 80% glass surface, generates nesa coating (ITO film) through surperficial high-temperature chemical reaction with heat-proof quality
Chinese patent CN01107749.2 (glass of coated with low-radiation film) invents a kind of glass that has the low-radiation film coating, and it is made up of glass-based this film and low-radiation film, wherein contains metal A g or Cu in the low-radiation film, and Al
2O
3
The method of sputter that all adopts the used heat-protecting glass rete of above-mentioned patent realizes the functional film layer of glass surface, its preparation method relative complex.
Summary of the invention
Technical problem to be solved by this invention is in order to overcome the deficiency that above-mentioned technology exists, a kind of preparation method of transparent heat insulating glass has been proposed, the mode that promptly adopts nano paint to apply, under the prerequisite that does not influence glass transparency, realize the heat insulating function of glass, its preparation method is comparatively easy, not influencing substantially under the prerequisite of glass light transmission, significantly improve its heat-proof quality.
The technical solution used in the present invention is: at first prepare the nano transparent heat-insulating functional paint, then coating is coated in glass surface by the mode that sprays and brush, behind the dry solidification, obtain having the glass of heat insulating function.
On the basis of the patent CN200410014672.4 " nano transparent heat-insulation composite coating " that applicant has had, improve formulation for coating material, with spraying and the method for brushing in the transparent heat-insulated coating of surface of ordinary glass coated with nano, invention has also prepared the heat-protecting glass that three classes are coated with transparent heat-insulated coating, be respectively the heat-protecting glass of filming, individual layer hollow heat-protecting glass, the bilayer hollow heat-protecting glass of filming of filming, be used for occasions such as automotive window, building window.
Relevant test data shows that the visible light transmissivity of these three kinds of novel heat-insulation glass all can reach more than 70%, and the shield glass transmittance that reaches international/national appropriate authority formulation fully must not be lower than 70% standard; Almost all be absorbed for ultraviolet ray; For the near infrared light that accounts for sun power 50%, also can reach 60~80% obstruct; If be applied to automobile, adopt this heat-protecting glass after, the temperature at automobile instrument panel position can descend 8~18 degrees centigrade.Because vehicle interior temperature obviously descends, alleviate the load of air-conditioning greatly, thereby played the effect that reduces energy consumption, play great role for automobile energy-conservation.If be applied to building window glass, not only do not influence the daylighting effect of buildings, and, can make the buildings room temp reduce by 5~8 ℃, for the energy-conservation meaning of building air-conditioning with very long-pending level according to the size of buildings window.
Concrete technical scheme of the present invention is:
A kind of transparent heat insulating glass is characterized in that being made up of glass substrate and transparent heat-insulated coating; The component and the parts by weight of wherein said heat insulating coat are as follows:
Macromolecule resin 30~65
Nano-powder 5~20
Coatings additive(s) 1~10
Thinner 29~58
Macromolecule resin is aqueous polyurethane or Resins, epoxy in the wherein said coating; Nano-powder is for containing tin-antiomony oxide (ATO) or tin indium oxide (ITO) at least, and Z 250 (Fe
3O
4), titanium dioxide (TiO
2), silicon-dioxide (SiO
2) or zinc oxide (ZnO) in any one or any two kinds of combinations, particle size range is 20~80nm; Coatings additive(s) comprises a kind of of dispersion agent, flow agent, defoamer, film coalescence aid and thickening material at least.Described dispersion agent is a kind of polymer-type anionic dispersing agents; Flow agent is acrylic copolymer or the polyether-modified polysiloxane of non-response type; Defoamer is a modified polyorganosiloxane; Film coalescence aid is ethylene glycol monobutyl ether/dipropylene glycol butyl ether mixture; Thickening material is the water-soluble dispersion liquid of a kind of hydroxyl acrylic; Thinner is water and/or alcohols.Described glass substrate is a common glass substrates.
The preparation method of nano transparent heat-insulating coating of the present invention is: at first by prescription the method for above-mentioned raw materials by mechanical blending is prepared into coating, the transparent heat-insulated coating that the method that adopts spraying then and brush will contain nanoparticle is coated on glass, under 60~180 ℃ temperature, solidified 1~2 hour, and promptly reached into the glass that the nano transparent heat-insulating coating applies.
Heat-protecting glass of the present invention can be that simple glass and one deck are that transparent heat-insulated coating is formed by one deck: structure sees synoptic diagram 1 for details: wherein glass surface heat insulating coat thickness is 20~50 μ m; The specific function effect of nanoparticle makes that coating not only reaches 70% above transmitance at visible region, the near-infrared region shielding rate reaches more than 60%, and UV-light then almost all absorbs shielding.
Heat-protecting glass of the present invention also can be filmed and two layers of hollow heat-protecting glass that glass is formed by individual layer: its structural representation is seen Fig. 2: two layers of glass substrate and transparent heat-insulated coating constitute, the inwall of one deck glass applies transparent heat-insulated coating (according to the difference of use occasion with the method for spraying at the individual layer inwall of ordinary insulating glass at first therein, can select coating is coated in upper strata glass inwall or lower floor's glass inwall), wherein the thickness of transparent heat-insulated coating is 10~30 μ m, because the special role of nanoparticle, make whole double glazing not only can reach transmitance more than 70% at visible region, and the shielding rate of near-infrared region reaches more than 60%, reach as high as 80%, and the transmitance of its UV-light is lower than 2%.And have good weather resistance, general condition reaches more than 6 years following work-ing life.
Heat-protecting glass of the present invention also can be two coating films and two layers of glass are formed the hollow heat-protecting glass.Structural representation is seen Fig. 3: wherein the thickness of transparent heat-insulated coating is 10~30 μ m, because the special role of nanoparticle, make whole double glazing not only can reach transmitance more than 70% at visible region, and the shielding rate of near-infrared region reaches more than 65%, reach as high as 80%, and the transmitance of its UV-light is lower than 2%.Have good weather resistance, general condition reaches more than 6 years following work-ing life.
Beneficial effect:
1, heat-protecting glass of the present invention is not influencing under the prerequisite of glass light transmission substantially, can significantly improve its heat-proof quality.With reference to the countries concerned's standard, the fundamental property of nano transparent insulating coating of the present invention is measured, the result proves that heat-protecting glass of the present invention under the situation that does not influence original glass fundamental property, has improved its heat-proof quality greatly.Its visible light transmissivity of heat-protecting glass of the present invention is all more than 70%, and simultaneously, several glass of the present invention all provide the near infrared shielding rate more than 60%, the ultravioletlight screening rate more than 98%.Therefore that the heat-protecting glass that nano transparent heat-insulating coating of the present invention applies has is transparent, shielding ultraviolet rays, shielding infrared rays, characteristic such as heat insulation.Its over-all properties is better than prior art.
2, its preparation method of the present invention is comparatively easy, and is with low cost, and its cost of manufacture is 1/3 of a heat insulation type LOW-E glass.
Description of drawings
Fig. 1 is individual layer heat-protecting glass 1 structural representation, wherein 1 nano transparent heat-insulating coating; 2 simple glasses.
Fig. 2 is the individual layer hollow heat-protecting glass structural representation of filming, and 3 is gas cloud.
Fig. 3 bilayer hollow heat-protecting glass structural representation of filming.
Embodiment
Describe the present invention with relevant chart below in conjunction with embodiment.But the invention is not restricted to given example.
Example 1: the individual layer heat-protecting glass of filming, to form by an one deck glass and a coating film, the thickness of filming is 30 μ m.Heat-protecting glass is formed and structure sees Table 1, table 2:
The film structure of heat-protecting glass of table 1 individual layer
Component | Form | Thickness | Remarks |
The transparent heat-insulated coating of glass nano | Simple glass contains nano ATO | 6mm 30μm | Film-forming temperature is 120 ℃, and film formation time is 2 hours |
The composition of the transparent heat-insulated coating of table 2
Component | Material name | Specification | Consumption (wt%) |
Film forming matter nano-powder nano-powder thinner thickening material | Urethane ATO SiO
2The water-soluble dispersion liquid of water hydroxyl acrylic
| The PUA-1 particle diameter is that 40~80nm particle diameter is 20~60nm deionized water commercially available product | 65 4.5 0.5 29 1 |
Transparent heat insulating dope is coated on glass by the method for brushing, drying and forming-film under certain filming condition, constitute and be coated with transparent heat-insulated glass of filming, this heat-protecting glass has excellent heat insulation property and visible light transmissivity, can reach the performance of relevant LOW-E glass through dependence test and its performance of calculating, its ultravioletlight screening rate reaches 98%, and other concrete data see Table 3:
Table 3 is coated with the optics/heat-proof quality of the glass of transparent heat-insulated coating
Optical property | Heat-proof quality |
Visible light transmissivity | Sun power index (SHGC) | Sheltering coefficient (Sc value) | The U value | 12 ℃ (compare with blank glass, blackboard temperature is poor) |
82% | 0.80 | 0.80 | 4.6 |
Example 2: the individual layer hollow heat-protecting glass of filming, to form by a layer glass and a coating film, the thickness of filming is 25 μ m.Heat-protecting glass is formed and structure sees Table 4, and the composition and the composition of coating see Table 5.
The film structure of hollow heat-protecting glass of table 4 individual layer
Component | Form | Thickness | Remarks |
The transparent heat-insulated coating layer glass of the first layer glass nano intermediate gaps second layer glass | Simple glass contains nano ATO, TiO
2The air simple glass
| 6mm 25μm 9mm 6mm | Film-forming temperature is 80 ℃, and film formation time is 2 hours |
The composition of the transparent heat-insulated coating of table 5
Component | Material name | Specification | Consumption (wt%) |
Film forming matter nano-powder nano-powder thinner dispersion agent defoamer | PUA ATO TiO
2Water aqueous dispersant modified polyorganosiloxane
| The PUA-2 particle diameter is that 40~80nm particle diameter is 20~60nm deionized water polymer-type anionic commercially available product | 49 8 3 34 5 1 |
Method by spraying is coated in transparent heat insulating dope on glass, drying and forming-film under certain filming condition, constitute double glazing (filming) with being coated with the glass of transparent heat-insulated coating and the glass of the uncoated coating of another sheet at inwall, this hollow heat-protecting glass has excellent heat insulation property and visible light transmissivity, can reach the performance of relevant LOW-E glass through dependence test and its performance of calculating, its ultravioletlight screening rate reaches 98%, and other concrete data see Table 6:
The film optics/heat-proof quality of hollow heat-protecting glass of table 6 individual layer
Optical property | Heat-proof quality |
Visible light transmissivity | Sun power index (SHGC) | Sheltering coefficient (Sc value) | The U value | 22 ℃ (compare with blank glass, blackboard temperature is poor) |
75% | 0.65 | 0.64 | 2.9 |
Example 3: the bilayer hollow heat-protecting glass of filming, be coated with transparent heat-insulated glass of filming by two and constitute, the thickness of two coating films is 25 μ m respectively.The hollow heat-protecting glass is formed and structure sees Table 7, and the composition and the composition of coating see Table 8:
The film structure of hollow heat-protecting glass of table 7 bilayer
Component | Form | Thickness | Remarks |
The transparent heat-insulated coating layer glass of glass nano intermediate gaps | Simple glass contains nano ATO, Fe
3O
4Air
| 6mm 25μm 9mm | Film-forming temperature is 100 ℃, and film formation time is 2 hours |
The composition of the transparent heat-insulated coating of table 8
Component | Material name | Specification | Consumption (wt%) |
Film forming matter nano-powder nano-powder thinner dispersion agent | Resins, epoxy ATO Fe
3O
4The water aqueous dispersant
| The Pol-1 particle diameter is that 40~80nm particle diameter is 20~60nm deionized water polymer-type anionic | 30 8 2 58 2 |
Method by spraying is coated in transparent heat insulating dope respectively on two sheet glass, drying and forming-film under certain filming condition, two glass that are coated with transparent heat-insulated coating are constituted double glazing (filming at inwall), this hollow heat-protecting glass has excellent heat insulation property and visible light transmissivity, can reach the performance of relevant LOW-E glass through dependence test and its performance of calculating, its ultravioletlight screening rate reaches 98%, and other concrete data see Table 9:
The film optics/heat-proof quality of hollow heat-protecting glass of table 9 bilayer
Optical property | Heat-proof quality |
Visible light transmissivity | Sun power index (SHGC) | Sheltering coefficient (Sc value) | The U value | 26 ℃ (compare with blank glass, blackboard temperature is poor) |
72% | 0.57 | 0.64 | 2.8 |
Example 4: the individual layer heat-protecting glass of filming, to film by single-glass and individual layer and to form, the thickness of filming is 45 μ m.Heat-protecting glass is formed and structure sees Table 10, table 11:
The film structure of heat-protecting glass of table 10 individual layer
Component | Form | Thickness | Remarks |
The transparent heat-insulated coating of glass nano | Simple glass contains nano-ITO | 6mm 45μm | Film-forming temperature is 100 ℃, and film formation time is 2 hours |
The composition of the transparent heat-insulated coating of table 11
Component | Material name | Specification | Consumption |
Film forming matter nano-powder nano-powder nano-powder diluent dispersant coalescents | Urethane ITO ZnO SiO
2Water/alcohol mixes liquid aqueous dispersant ethylene glycol monobutyl ether/dipropylene glycol butyl ether mixture
| The PUA-1 particle diameter is that 40~80nm particle diameter is that 20~60n particle diameter is 20~60nm AR polymer-type anionic CR | 40 10 5 5 30 7 3 |
Method by spraying is coated in transparent heat insulating dope on glass, drying and forming-film under certain filming condition, constitute and be coated with transparent heat-insulated glass of filming, this heat-protecting glass has excellent heat insulation property and visible light transmissivity, can reach the performance of relevant LOW-E glass through dependence test and its performance of calculating, its ultravioletlight screening rate reaches 99%, and other concrete data see Table 12:
Table 12 is coated with the optics/heat-proof quality of the glass of transparent heat-insulated coating
Optical property | Heat-proof quality |
Visible light transmissivity | Sun power index (SHGC) | Sheltering coefficient (Sc value) | The U value | 20 ℃ (compare with blank glass, blackboard temperature is poor) |
75% | 0.70 | 0.72 | 3.4 |
Example 5: the bilayer hollow heat-protecting glass of filming, be coated with transparent heat-insulated glass of filming by two and constitute, the thickness of two coating films is 12 μ m respectively.Heat-protecting glass is formed and structure sees Table 13, table 14:
The film structure of hollow heat-protecting glass of table 13 bilayer
Component | Form | Thickness | Remarks |
The transparent heat-insulated coating of glass nano | Simple glass contains nano-ITO, Fe
3O
4 | 8mm 12μm | Film-forming temperature is 160 ℃, |
The layer glass intermediate gaps |
Air |
12mm |
Film formation time is 2 hours |
The composition of the transparent heat-insulated coating of table 14
Component | Material name | Specification | Consumption |
Film forming matter nano-powder nano-powder thinner dispersion agent film coalescence aid | Urethane ITO Fe
3O
4Water/alcohol mixes liquid aqueous dispersant ethylene glycol monobutyl ether/dipropylene glycol butyl ether mixture
| The PUA-1 particle diameter is that 40~80nm particle diameter is 20~60n AR polymer-type anionic CR | 50 8 4 30 5 3 |
Method by spraying is coated in transparent heat insulating dope respectively on two sheet glass, drying and forming-film under certain filming condition, two glass that are coated with transparent heat-insulated coating are constituted double glazing (filming at inwall), this hollow heat-protecting glass has excellent heat insulation property and visible light transmissivity, can meet or exceed the performance of relevant LOW-E glass through dependence test and its performance of calculating, its ultravioletlight screening rate reaches 99%, and other concrete data see Table 15:
The film optics/heat-proof quality of hollow heat-protecting glass of table 15 bilayer
Optical property | Heat-proof quality |
Visible light transmissivity | Sun power index (SHGC) | Sheltering coefficient (Sc value) | The U value | 28 ℃ (compare with blank glass, blackboard temperature is poor) |
70% | 0.60 | 0.60 | 2.6 |
Attached: the structure of double glazing can be with reference to GB 11944-2002 double glazing in the above-mentioned explanation.