CN104087047A - Thermal-insulation paint and preparation method thereof - Google Patents
Thermal-insulation paint and preparation method thereof Download PDFInfo
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- CN104087047A CN104087047A CN201410359928.9A CN201410359928A CN104087047A CN 104087047 A CN104087047 A CN 104087047A CN 201410359928 A CN201410359928 A CN 201410359928A CN 104087047 A CN104087047 A CN 104087047A
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Abstract
The invention provides a thermal-insulation paint and a preparation method thereof. The thermal-insulation paint comprises aerogel powder, an infrared reflecting material and a latex paint in a weight ratio of (0.5-1):(10-20):(25-50). The preparation method comprises the following steps: 1. preparing the aerogel powder; 2. providing the infrared reflecting material and the latex paint; and 3. pouring the aerogel powder and infrared reflecting material into the latex paint according to the preset proportion, and mixing and stirring for preset time, thereby obtaining the thermal-insulation paint. The thermal-insulation paint has the advantages of favorable thermal-insulation property, favorable flame retardancy and the like, is convenient construction, can purify air, and thus, has wide application prospects.
Description
Technical field
The invention belongs to building material technical field, particularly a kind of thermal insulation coatings and preparation method.
Background technology
At present, outer wall heat preservation system is with EPS (expanded polystyrene board, polystyrene foamed plastics) application of plate thinly plastered external insulation system of outer wall and rubber powder EPS granule thermal insulation slurry external thermal insulation system is the most general, and utilisation technology is also comparatively ripe.
For EPS plate thinly plastered external insulation system of outer wall, exist fire resistance not good enough, be not suitable for abnormal complex structure, and in construction process, also have that operation is loaded down with trivial details, the construction wrong problem such as come off easy to crack, and in whole system, there is a large amount of plate seams, easily form the problems such as heat bridge.
Rubber powder EPS granule thermal insulation slurry is taking premix dry mixing mortar as main gelling material, and taking polystyrene foam particles as light skeletal, configuration, is stirred at the scene and spread upon exterior wall surfaces externally and internally in proportion, can form external thermal insulation system.In construction process, boundary mortar is not smeared or applying amount deficiency cause adhesive polystyrene granule heat-insulating mortar and basic unit's interlock bad, cause sticking power missionary society to produce the problem such as hollowing.And adhesive polystyrene granule heat-insulating mortar, due to its non-refractory, inflammable, causes safety performance low, therefore use also fewer and feweri.
Therefore be necessary to develop a kind of new lagging material, the problem of the inflammable and construction process complexity of the non-refractory that exists with the exterior wall heat-preserving system solving taking EPS as basic lagging material.
Summary of the invention
The object of the present invention is to provide a kind of thermal insulation coatings and preparation method, for solving the problem of the inflammable and construction process complexity of traditional exterior wall heat-preserving system, not only meet heat insulation effect but also avoided heat-insulation system inflammable, and the invention of this thermal insulation coatings makes construction process become simple easy handling, thereby reach energy-conserving and environment-protective, reduce the object of construction cost.
Address the above problem in order to realize, the invention provides a kind of thermal insulation coatings, comprise aerogel powder, infrared reflective material and latex coating, the weight ratio of described aerogel powder, described infrared reflective material and described latex coating is (0.5～1): (10～20): (25～50).
Optionally, in described thermal insulation coatings, described aerogel powder is silica aerogel powder.
Optionally, in described thermal insulation coatings, described infrared reflective material is titanium dioxide or cenosphere.
Optionally, in described thermal insulation coatings, described latex coating comprises following component, and each component according to weight part is: ammoniacal liquor 10～15, first class butyl acrylate 195～210, deionized water 320～380, acrylate resin 155～175, ammonium persulfate 3～7.
Accordingly, the present invention also provides a kind of preparation method of described thermal insulation coatings, comprises the following steps:
Step 1: prepare described aerogel powder;
Step 2: described infrared reflective material and described latex coating are provided;
Step 3: according to predetermined proportion, described aerogel powder and described infrared reflective material are poured in described latex coating, the mix and blend scheduled time, made described thermal insulation coatings.
Optionally, in the preparation method of described thermal insulation coatings, when the weight ratio of described aerogel powder, described infrared reflective material and described latex coating is 1:(10～20): 50 time, the scheduled time is 20～25 minutes.
Optionally, in the preparation method of described thermal insulation coatings, when the weight ratio of described aerogel powder, described infrared reflective material and described latex coating is 0.5:(10～20): 50 time, the scheduled time is 10～15 minutes.
Optionally, in the preparation method of described thermal insulation coatings, described step 1 comprises the steps:
S1: prepare silicon oxide wet gel: by tetraethyl orthosilicate, organic solvent and deionized water mix and blend, then stir 5～10 minutes after adding catalyzer, leave standstill after 12～24 hours, obtain silicon oxide wet gel; Wherein, the mol ratio of described tetraethyl orthosilicate, organic solvent, deionized water and catalyzer is (0.5～1): (1～4): (0.1～0.25): (0.03～0.04);
S2: aging and displacement: the silicon oxide wet gel of gained in step S1 is covered and leave standstill aging 3 days with ethanol, with ethanol displacement 2～4 times, each 12～24 hours, then ethanol is poured out between aging time;
S3: allow silicon oxide wet gel seasoning to caking form silica aerogel; And
S4: described silica aerogel abrasive dust is formed to described silica aerogel powder.
Optionally, in the preparation method of described thermal insulation coatings, between described step S2 and step S3, also comprise: silicon oxide wet gel is carried out to finishing with hexamethyldisiloxane and trimethylchlorosilane mixing solutions.
Optionally, in the preparation method of described thermal insulation coatings, described organic solvent is ethanol or methyl alcohol, and described catalyzer is hydrofluoric acid.
Thermal insulation coatings of the present invention, can be for the exterior wall of buildings, interior wall, wall brick or floor tile, and directly the surface at exterior wall or interior wall by thermal insulation coatings brushing, is equivalent to, at exterior wall or inner wall surface, one layer of heat preservation layer is set; Equally, this thermal insulation coatings is brushed to wall brick or the floor tile back side, wall brick or floor tile have just become heat preserving wall brick or thermal-insulation floor tile, do not need extra auxiliary construction, can complete the setting of thermal insulation layer, thereby have reduced construction cost.
Thermal insulation coatings provided by the present invention, comprise aerogel powder, infrared reflective material and latex coating, the weight ratio of described aerogel powder, described infrared reflective material and described latex coating is (0.5～1): (10～20): (25～50).The present invention has analyzed porous, lower thermal conductivity and the frangible feature of aerogel, aerogel is mixed mutually with latex coating, improve the heat insulating effect of latex coating with aerogel, strengthen the physical strength of aerogel with latex coating, add infrared reflective material simultaneously, optimize infrared barrier performance and improve the sticking power of thermal insulation coatings simultaneously, prevent crackle and extend life-span of thermal insulation coatings.Replace EPS plate thin plastering exterior wall or the rubber powder EPS granule thermal insulation slurry in conventional art with described thermal insulation coatings, do not need to increase extra operation, directly need to be using thermal insulation coatings of the present invention as exterior coating, directly brushing can complete the setting of thermal insulation layer, easy construction at exterior wall surface; In addition the heat insulation and flame-retarding characteristic of airsetting rubber powder excellence also makes heat insulation effect excellence and safety, thereby has reached energy-conserving and environment-protective, reduce the object of construction cost.
Brief description of the drawings
Fig. 1 is the thermal insulation coatings of the embodiment of the present invention one and the cardboard that latex coating is brushed respectively, the temperature variation after heating.
Embodiment
Core concept of the present invention is, the aerogel powder with good insulation and flame retardant effect is mixed with the latex coating with convenient construction, and add the infrared emission material that there is enhance mechanical strength and improve sticking power, obtain thermal insulation coatings of the present invention, thermal insulation coatings makes the construction process of thermal insulation layer become simple, avoided that thermal insulation layer is inflammable, heat insulation effect is poor and construction process in the variety of issue that occurs.
SiO
2aerogel is by SiO
2network skeleton and be filled in a kind of high dispersive solid material that the gas in nanometer space forms.Due to SiO
2the density of aerogel only has 30～100kg/ml, and has more than 80% porosity, and its aperture is the mesoporous size that nanometer network skeleton interconnects between 2 formed～50nm, and this special vesicular structure makes SiO
2aerogel has very excellent heat-proof quality.This special vesicular structure has also caused SiO simultaneously
2aerogel does not have physical strength well, is very easy to fragmentation, therefore cannot adopt SiO
2aerogel is directly as thermal insulation layer.Applicant has analyzed after the performance of latex coating and infrared emission material, cleverly by SiO
2aerogel is worn into powder, and has formed one with latex coating and infrared emission material mixing and take into account the convenient and solid reliable thermal insulation coatings of heat insulation effect, construction.
The thermal insulation coatings and the preparation method that the present invention are proposed below in conjunction with the drawings and specific embodiments are described in further detail.According to the following describes and claims, advantages and features of the invention will be clearer.
Embodiment mono-
First: prepare aerogel powder;
S1: prepare silicon oxide wet gel: by ethanol, tetraethyl orthosilicate and deionized water mix and blend, and then add hydrofluoric acid, stir 5 minutes, static colloidal sol obtains silicon oxide wet gel for 12 hours, wherein: the mol ratio of tetraethyl orthosilicate, ethanol, deionized water, hydrofluoric acid is 1:2:0.25:0.04.Ethanol uses as organic solvent, and hydrofluoric acid uses as catalyzer, and preferred, the purity of hydrofluoric acid is top grade pure (GR).
S2: aging and displacement: the silicon oxide wet gel ethanol that S1 is obtained covers and static aging 3 days, between aging time, with ethanol displacement 2～4 times, each 12～24 hours, then ethanol is poured out;
S3: allow silicon oxide wet gel seasoning to caking form silica aerogel;
For the silica aerogel that step S3 is formed possesses hydrophobicity, can be after step S2 finishes, described silicon oxide wet gel is carried out to finishing with hexamethyldisiloxane and trimethylchlorosilane mixing solutions, make silicon oxide wet gel possess good hydrophobic performance, thereby make finally to form silicon oxide airsetting powder and thermal insulation coatings all possesses hydrophobicity, good hydrophobic effect belongs in paint field the quality that industry is concerned about very much.Wherein, the volume ratio of hexamethyldisiloxane and trimethylchlorosilane is 5:1, and hexamethyldisiloxane and trimethylchlorosilane all adopt the purity of chemical pure (CP level) rank.
S4: silica aerogel abrasive dust is formed to silica aerogel powder.
Then: infrared reflective material and latex coating are provided;
Infrared reflective material can be selected titanium dioxide or cenosphere, and this can select conventional coating at present, the coating of for example crylic acid resin latex coating.Latex coating can comprise following component, and each component according to weight part is: ammoniacal liquor 10～15, first class butyl acrylate 195～210, deionized water 320～380, acrylate resin 155～175, ammonium persulfate 3～7.
Last: according to predetermined proportion, aerogel powder and infrared reflective material to be poured in latex coating, the mix and blend scheduled time, made thermal insulation coatings.Wherein, the weight ratio of aerogel powder, titanium dioxide, latex coating is 1:10:50, and aerogel powder, titanium dioxide and latex coating are mixed, and mix and blend, about 20 minutes, forms thermal insulation coatings.
Above-mentioned latex coating and thermal insulation coatings are brushed to respectively on identical cardboard, wait for after seasoning, heat respectively two blocks of cardboards with spirit lamp, test and record the temperature variation of two blocks of cardboards, obtain temperature variation curve as shown in Figure 1, the temperature variation curve of the above-mentioned latex coating cardboard of the brushing of A curve representation in Fig. 1, B curve representation be the temperature variation curve of having brushed thermal insulation coatings cardboard, as seen from Figure 1, A curve range of temperature is far below the range of temperature of B curve, visible, the heat insulation effect of thermal insulation coatings will be significantly better than latex coating.
Embodiment bis-
First: prepare aerogel powder;
S1: prepare silicon oxide wet gel: by methyl alcohol, tetraethyl orthosilicate and deionized water mix and blend, and then add hydrofluoric acid, stir 5 minutes, static colloidal sol obtains silicon oxide wet gel for 12 hours, wherein: the mol ratio of tetraethyl orthosilicate, methyl alcohol, deionized water, hydrofluoric acid is 1:4:0.25:0.06.
S2: aging and displacement: the silicon oxide wet gel ethanol that S1 is obtained covers and static aging 3 days, between aging time, with ethanol displacement 2～4 times, each 12～24 hours, then ethanol is poured out;
S3: allow silicon oxide wet gel seasoning to caking form silica aerogel;
S4: silica aerogel abrasive dust is formed to silica aerogel powder.
Then: infrared reflective material and latex coating are provided;
Last: according to predetermined proportion, aerogel powder and infrared reflective material to be poured in latex coating, the mix and blend scheduled time, made thermal insulation coatings.Wherein, the weight ratio of aerogel powder, titanium dioxide, latex coating is 1:20:50, and aerogel powder, titanium dioxide and latex coating are mixed, and mix and blend, about 20 minutes, forms thermal insulation coatings.
Embodiment tri-
First: prepare aerogel powder;
S1: prepare silicon oxide wet gel: by ethanol, tetraethyl orthosilicate and deionized water mix and blend, and then add hydrofluoric acid, stir 5 minutes, static colloidal sol obtains silicon oxide wet gel for 12 hours, wherein: the mol ratio of tetraethyl orthosilicate, ethanol, deionized water, hydrofluoric acid is 1:2:0.25:0.04.
S2: aging and displacement: the silicon oxide wet gel ethanol that S1 is obtained covers and static aging 3 days, between aging time, with ethanol displacement 2～4 times, each 12～24 hours, then ethanol is poured out;
S3: allow silicon oxide wet gel seasoning to caking form silica aerogel;
S4: silica aerogel abrasive dust is formed to silica aerogel powder.
Then: infrared reflective material and latex coating are provided;
Last: according to predetermined proportion, aerogel powder and infrared reflective material to be poured in latex coating, the mix and blend scheduled time, made thermal insulation coatings.Wherein, the weight ratio of aerogel powder, titanium dioxide, latex coating is 1:10:50, and aerogel powder, titanium dioxide and latex coating are mixed, and mix and blend, about 15 minutes, forms thermal insulation coatings.
Embodiment tetra-
First: prepare aerogel powder;
S1: prepare silicon oxide wet gel: by ethanol, tetraethyl orthosilicate and deionized water mix and blend, and then add hydrofluoric acid, stir 5 minutes, static colloidal sol obtains silicon oxide wet gel for 12 hours, wherein: the mol ratio of tetraethyl orthosilicate, ethanol, deionized water, hydrofluoric acid is 1:4:0.25:0.06.
S2: aging and displacement: the silicon oxide wet gel ethanol that S1 is obtained covers and static aging 3 days, between aging time, with ethanol displacement 2～4 times, each 12～24 hours, then ethanol is poured out;
S3: allow silicon oxide wet gel seasoning to caking form silica aerogel;
S4: silica aerogel abrasive dust is formed to silica aerogel powder.
Then: infrared reflective material and latex coating are provided;
Last: according to predetermined proportion, aerogel powder and infrared reflective material to be poured in latex coating, the mix and blend scheduled time, made thermal insulation coatings.Wherein, the weight ratio of aerogel powder, titanium dioxide, latex coating is 1:20:50, and aerogel powder, titanium dioxide and latex coating are mixed, and mix and blend, about 15 minutes, forms thermal insulation coatings.
In sum, thermal insulation coatings provided by the present invention comprises aerogel powder, infrared reflective material and latex coating.Heat insulation, the flame retardant properties of aerogel powder and excellent absorption property, the infrared heat-proof quality of infrared emission material and the construction convenience of latex coating are combined, form existing heat insulation effect, there is flame retardant effect again, also the thermal insulation coatings of convenient construction again.Meanwhile, because the vesicular structure of aerogel, therefore aerogel is also through being often used as sorbing material, for purifying air.This adsorption function has also obtained corresponding embodiment in thermal insulation coatings of the present invention, uses thermal insulation coatings of the present invention, then realizes under the prerequisite of above-mentioned functions, also possesses the effect that absorbs cleaning harmful gas air in air.Heat insulating, fire-retardant exhausted combustion, convenient construction and many effects such as purify air, make this lagging material have boundless application prospect.
Foregoing description is only the description to preferred embodiment of the present invention, the not any restriction to the scope of the invention, and any change, modification that the those of ordinary skill in field of the present invention does according to above-mentioned disclosure, all belong to the protection domain of claims.
Claims (10)
1. a thermal insulation coatings, it is characterized in that, comprise aerogel powder, infrared reflective material and latex coating, the weight ratio of described aerogel powder, described infrared reflective material and described latex coating is (0.5～1): (10～20): (25～50).
2. thermal insulation coatings as claimed in claim 1, is characterized in that, described aerogel powder is silica aerogel powder.
3. thermal insulation coatings as claimed in claim 1, is characterized in that, described infrared reflective material is titanium dioxide or cenosphere.
4. thermal insulation coatings as claimed in claim 1, is characterized in that, described latex coating comprises following component, each component according to weight part is: ammoniacal liquor 10～15, first class butyl acrylate 195～210, deionized water 320～380, acrylate resin 155～175, ammonium persulfate 3～7.
5. a preparation method for thermal insulation coatings as described in any one in claim 1 to 4, comprises the following steps:
Step 1: prepare described aerogel powder;
Step 2: described infrared reflective material and described latex coating are provided;
Step 3: according to predetermined proportion, described aerogel powder and described infrared reflective material are poured in described latex coating, the mix and blend scheduled time, made described thermal insulation coatings.
6. the preparation method of thermal insulation coatings as claimed in claim 5, is characterized in that, when the weight ratio of described aerogel powder, described infrared reflective material and described latex coating is 1:(10～20): 50 time, the scheduled time is 20～25 minutes.
7. the preparation method of thermal insulation coatings as claimed in claim 5, is characterized in that, when the weight ratio of described aerogel powder, described infrared reflective material and described latex coating is 0.5:(10～20): 50 time, the scheduled time is 10～15 minutes.
8. the preparation method of thermal insulation coatings as claimed in claim 5, is characterized in that, described step 1 comprises the steps:
S1: prepare silicon oxide wet gel: by tetraethyl orthosilicate, organic solvent and deionized water mix and blend, then stir 5～10 minutes after adding catalyzer, leave standstill after 12～24 hours, obtain silicon oxide wet gel; Wherein, the mol ratio of described tetraethyl orthosilicate, organic solvent, deionized water and catalyzer is (0.5～1): (1～4): (0.1～0.25): (0.03～0.04);
S2: aging and displacement: the silicon oxide wet gel of gained in step S1 is covered and leave standstill aging 3 days with ethanol, with ethanol displacement 2～4 times, each 12～24 hours, then ethanol is poured out between aging time;
S3: allow silicon oxide wet gel seasoning to caking form silica aerogel; And
S4: described silica aerogel abrasive dust is formed to described silica aerogel powder.
9. the preparation method of thermal insulation coatings as claimed in claim 8, is characterized in that, between described step S2 and step S3, also comprises: described silicon oxide wet gel is carried out to finishing with hexamethyldisiloxane and trimethylchlorosilane mixing solutions.
10. the preparation method of thermal insulation coatings as claimed in claim 8, is characterized in that, described organic solvent is ethanol or methyl alcohol, and described catalyzer is hydrofluoric acid.
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Cited By (7)
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| CN105367033A (en) * | 2015-11-19 | 2016-03-02 | 浙江大学自贡创新中心 | Flame retardant and heat preservation slurry |
| CN106433270A (en) * | 2016-11-08 | 2017-02-22 | 天津明汉伟业科技有限公司 | Reflective heat-insulation aerogel coating and application thereof |
| CN106700668A (en) * | 2016-12-01 | 2017-05-24 | 深圳中凝科技有限公司 | Transparent aerogel heat-insulating coating and preparation method thereof |
| CN106738532A (en) * | 2016-08-22 | 2017-05-31 | 海南大学 | A kind of quick-drying method of latex |
| CN107141943A (en) * | 2016-01-16 | 2017-09-08 | 天津城建大学 | The preparation method of raw-soil waterproof heat-insulating coating |
| CN107236403A (en) * | 2016-01-16 | 2017-10-10 | 天津城建大学 | Application of the waterproof heat-insulating coating in the raw-soil is waterproof thermal-insulated |
| CN107815226A (en) * | 2017-11-06 | 2018-03-20 | 陈兴 | A kind of thermal insulation coatings of air conditioning exhausting pipe and preparation method thereof |
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Cited By (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105367033A (en) * | 2015-11-19 | 2016-03-02 | 浙江大学自贡创新中心 | Flame retardant and heat preservation slurry |
| CN107141943A (en) * | 2016-01-16 | 2017-09-08 | 天津城建大学 | The preparation method of raw-soil waterproof heat-insulating coating |
| CN107177265A (en) * | 2016-01-16 | 2017-09-19 | 天津城建大学 | Application of the waterproof heat-insulating coating in the raw-soil is waterproof thermal-insulated |
| CN107236403A (en) * | 2016-01-16 | 2017-10-10 | 天津城建大学 | Application of the waterproof heat-insulating coating in the raw-soil is waterproof thermal-insulated |
| CN106738532A (en) * | 2016-08-22 | 2017-05-31 | 海南大学 | A kind of quick-drying method of latex |
| CN106738532B (en) * | 2016-08-22 | 2020-07-31 | 海南大学 | Method for quickly drying latex |
| CN106433270A (en) * | 2016-11-08 | 2017-02-22 | 天津明汉伟业科技有限公司 | Reflective heat-insulation aerogel coating and application thereof |
| CN106700668A (en) * | 2016-12-01 | 2017-05-24 | 深圳中凝科技有限公司 | Transparent aerogel heat-insulating coating and preparation method thereof |
| CN107815226A (en) * | 2017-11-06 | 2018-03-20 | 陈兴 | A kind of thermal insulation coatings of air conditioning exhausting pipe and preparation method thereof |
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Application publication date: 20141008 |