CN104744975A - Magnesium phosphate inorganic thermal-insulation paint and preparation method thereof - Google Patents
Magnesium phosphate inorganic thermal-insulation paint and preparation method thereof Download PDFInfo
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Abstract
The invention discloses a magnesium phosphate inorganic thermal-insulation paint and a preparation method thereof. The magnesium phosphate inorganic thermal-insulation paint comprises a cementing material, a functional filler and additives, wherein the cementing material is magnesium phosphate. In the thermal-insulation paint, when the coating of the thermal-insulation paint becomes hard in the use process, the hard coating has favorable thermal-insulation property. The magnesium phosphate inorganic thermal-insulation paint has the characteristics of high adhesiveness, excellent ultraviolet resistance, zero volatile organic matter and the like, and is easy to prepare and convenient to use.
Description
Technical field
The present invention relates to thermal insulating coating field, particularly relate to a kind of trimagnesium phosphate inorganic thermal insulation coating and preparation method thereof.
Background technology
The thermal comfort of building is the problem that people paid close attention to since thousand always, along with the growth of population, the demand of the thermal comfort of building constantly increases, and people occupy the plenty of time in indoor, and the energy consumption of building has become the important component part of energy consumption.For China, to the year two thousand twenty, domestic house architectural area will reach 68.6 hundred million squares, and building energy consumption will occupy 33% of total energy consumption.In addition, in order to make room temp all remain on comfort level in the whole year, auxiliary heating or cooling system are widely used, and the greenhouse gas emission of building increases greatly.So, various be used for improving building energy utilising efficiency strategy and means be concerned and developing, comprise laboratory stage and industry application stage.The heat-proof quality of especially building is always as most important research direction.Existingly be used for improving the mode of heat-proof quality and be mainly divided into two classes: a kind of is that outside the building portion uses by the wallboard having heat-proof quality material and make; Another kind uses thermal insulating coating at building surface.
As everyone knows, lagging material has had longer developing history, specifically can trace back to 1970.Traditional lagging material is mineral wool, polystyrene foamed, extruded polystyrene, fiberboard, cork, urethane etc. mainly.The insulating mechanism of most lagging material is due to its high porosity thus has lower thermal conductivity.Further, due to its high porosity, these lagging materials can be used in the building surface of different shape easily.But contrary, high porosity also can cause lower bearing capacity and poor endurance quality.Further, during use, traditional lagging material easily makes moist, especially in wet condition more moisture-sensitive.So the heat-proof quality of these lagging materials will constantly decline.In addition, most traditional lagging material is inflammable, and can discharge obnoxious flavour when burnt, such as, during urethane burning, and can discharge of noxious gases harm humans health.Fortunately, novel lagging material is constantly developed, such as vacuum insulating panel, gas lagging material, aerogel and dynamic lagging material.Compared to traditional insulation materials, these lagging materials newly developed, the thermal conductivity lower due to it thus there is better heat-proof quality.But the maximum problem of these lagging materials newly developed is that cost is high, is difficult to large-scale promotion and uses.
Therefore, prior art has yet to be improved and developed.
Summary of the invention
In view of above-mentioned the deficiencies in the prior art, the object of the present invention is to provide a kind of trimagnesium phosphate inorganic thermal insulation coating and preparation method thereof, be intended to solve the problem that existing heat-insulation property of heat-insulation coating has much room for improvement, volatile organism, UV resistant performance and cement properties etc. all have much room for improvement.
Technical scheme of the present invention is as follows:
A kind of trimagnesium phosphate inorganic thermal insulation coating, wherein, comprising: gelling material, functional stuffing, additive, described gelling material is trimagnesium phosphate.
Described trimagnesium phosphate inorganic thermal insulation coating, wherein, described functional stuffing comprises one or more in hollow beads, titanium oxide, pigment, phase change material and mineral filler.
Described trimagnesium phosphate inorganic thermal insulation coating, wherein, described mineral filler comprises one or more in white cement, calcium carbonate, expanded vermiculite, diatomite, pearlstone and nano clay.
Described trimagnesium phosphate inorganic thermal insulation coating, wherein, described additive comprises one or more in borax, boric acid, defoamer and water.
Described trimagnesium phosphate inorganic thermal insulation coating, wherein, described trimagnesium phosphate material is obtained by activated magnesia and phosphate reaction.
Described trimagnesium phosphate inorganic thermal insulation coating, wherein, described phosphoric acid salt is one or more in potassium primary phosphate, SODIUM PHOSPHATE, MONOBASIC and Sodium phosphate dibasic.
Described trimagnesium phosphate inorganic thermal insulation coating, wherein, described activated magnesia is light calcined magnesia, and described light calcined magnesia is obtained by magnesia calcined under 1000 DEG C ~ 1700 DEG C conditions for more than 1 hour.
Described trimagnesium phosphate inorganic thermal insulation coating, wherein, described activated magnesia and phosphatic mol ratio are 1 ~ 20:1.
A preparation method for trimagnesium phosphate inorganic thermal insulation coating as above, wherein, comprises step:
Solids mixing in raw material is formed solid mixture;
Solution in raw material is mixed formation mixing solutions;
In use, mixing solutions is mixed the emulsion making thermal insulating coating with solid mixture.Described preparation method, wherein, described emulsion coats target surface in the mode of brushing, roller coat, blade coating or spraying.
Beneficial effect: thermal insulating coating of the present invention, in use when hardening after thermal insulating coating coating, is just provided with preferably heat-proof quality.Trimagnesium phosphate inorganic thermal insulation coating of the present invention also has strong cement properties, excellent UV resistant performance, zero volatile organic compounds, easily preparation and the feature such as easy to use.
Accompanying drawing explanation
Fig. 1 is the internal surface temperature trend schematic diagram over time of each fiber cement board in embodiment 1.
Fig. 2 is coated with the thermal conductivity of thermal insulating coating on fiber cement board to affect schematic diagram in embodiment 1.
Fig. 3 is the solar reflectance schematic diagram of each fiber cement board within the scope of wavelength 400-1100nm in embodiment 1.
Fig. 4 is the internal surface temperature trend schematic diagram over time of each fiber cement board in embodiment 2.
Fig. 5 is coated with the thermal conductivity of thermal insulating coating on fiber cement board to affect schematic diagram in embodiment 2.
Fig. 6 is the solar reflectance schematic diagram of each fiber cement board within the scope of wavelength 400-1100nm in embodiment 2.
Fig. 7 is the internal surface temperature trend schematic diagram over time of each fiber cement board in embodiment 3.
Fig. 8 is coated with the thermal conductivity of thermal insulating coating on fiber cement board to affect schematic diagram in embodiment 3.
Fig. 9 is the solar reflectance schematic diagram of each fiber cement board within the scope of wavelength 400-1100nm in embodiment 3.
Figure 10 is the internal surface temperature trend schematic diagram over time of each fiber cement board in embodiment 4.
Figure 11 is coated with the thermal conductivity of thermal insulating coating on fiber cement board to affect schematic diagram in embodiment 4.
Figure 12 is the solar reflectance schematic diagram of each fiber cement board within the scope of wavelength 400-1100nm in embodiment 4.
Figure 13 is the internal surface temperature trend schematic diagram over time of each fiber cement board in embodiment 5.
Figure 14 is coated with the thermal conductivity of thermal insulating coating on fiber cement board to affect schematic diagram in embodiment 5.
Figure 15 is the solar reflectance schematic diagram of each fiber cement board within the scope of wavelength 400-1100nm in embodiment 5.
Embodiment
The invention provides a kind of trimagnesium phosphate inorganic thermal insulation coating and preparation method thereof, for making object of the present invention, technical scheme and effect clearly, clearly, the present invention is described in more detail below.Should be appreciated that specific embodiment described herein only in order to explain the present invention, be not intended to limit the present invention.
Trimagnesium phosphate inorganic thermal insulation coating provided by the present invention, an one main improvement is, using trimagnesium phosphate material as gelling material.The heat insulating effect that effectively can improve building structure, pipeline etc. is used as coating.In addition, the present invention also provides the preparation method of this trimagnesium phosphate inorganic thermal insulation coating.
Trimagnesium phosphate inorganic thermal insulation coating of the present invention, it comprises gelling material, functional stuffing, additive.Described trimagnesium phosphate material is obtained by activated magnesia and phosphate reaction, described activated magnesia is light calcined magnesia (also can adopt other activated magnesias), and described light calcined magnesia is obtained by magnesia calcined under 1000 DEG C ~ 1700 DEG C conditions for more than 1 hour.Described phosphoric acid salt is then one or more in potassium primary phosphate, SODIUM PHOSPHATE, MONOBASIC and Sodium phosphate dibasic.Light calcined magnesia wherein and phosphatic mol ratio are 1 ~ 20:1.Phosphoric acid salt be wherein in solid form or liquid form use.
Functional stuffing wherein, such as, in hollow beads, phase change material, titanium oxide, pigment and mineral filler one or more.The density of hollow beads is 0.05 ~ 3.0g/cm
3, plot ratio (volume fraction) is 5% ~ 80%.The solvent temperature of phase change material is more than 30 DEG C, and addition is 0 ~ 100%, in light calcined magnesia quality.In light calcined magnesia quality, the addition of titanium oxide is 0 ~ 100%.In light calcined magnesia quality, the addition of pigment is 0 ~ 5%.
Described mineral filler comprises one or more in white cement, calcium carbonate, expanded vermiculite, diatomite, pearlstone and nano clay.In light calcined magnesia quality, the addition of white cement is 0 ~ 30%.In light calcined magnesia quality, nano clay addition is 0 ~ 5%.0 ~ 5% is accounted for the filler of nanometer or micron, in light calcined magnesia quality in mineral filler.
Described additive comprises one or more in borax, boric acid, defoamer and water.The setting time of trimagnesium phosphate inorganic thermal insulation coating is controlled by borax, boric acid or frozen water.In light calcined magnesia quality, the addition of borax or boric acid is 0 ~ 25%.
Trimagnesium phosphate inorganic thermal insulation coating of the present invention its be with solid mixture (as powder) and solution two kinds of packaged.For solid mixture, it solid part comprised in light calcined magnesia, functional stuffing and additive is graded.
When potassium primary phosphate is as when preparing the unique phosphoric acid salt of trimagnesium phosphate, then potassium primary phosphate is also be mixed in described solid mixture in solid form, and in this case, solution then only comprises water.And when the mixture of SODIUM PHOSPHATE, MONOBASIC or SODIUM PHOSPHATE, MONOBASIC and potassium primary phosphate is as when preparing the phosphoric acid salt of trimagnesium phosphate, so the mixture of SODIUM PHOSPHATE, MONOBASIC or SODIUM PHOSPHATE, MONOBASIC and potassium primary phosphate is then soluble in water packs in the form of a solution.
The preparation method of trimagnesium phosphate inorganic thermal insulation coating provided by the present invention, it comprises step:
Solids mixing in raw material is formed solid mixture;
Solution in raw material is mixed formation mixing solutions;
In use, mixing solutions is mixed the emulsion making thermal insulating coating with solid mixture.
Further, described emulsion coats target surface, such as buildings, pipeline etc. in the mode of brushing, roller coat, blade coating or spraying.During concrete use, solid mixture can be mixed with mixing solutions, be prepared into the emulsion of thermal insulating coating.When hardening after thermal insulating coating coating, be just provided with preferably heat-proof quality.In addition trimagnesium phosphate inorganic thermal insulation coating of the present invention also has strong cement properties, excellent UV resistant performance, zero volatile organic compounds, inflammableness, easily preparation and the feature such as easy to use.
In the present invention, MPP-C refers to potassium magnesium phosphate inorganic thermal insulation coating; MSP-C refers to potassiumphosphate sodium inorganic thermal insulation coating; MPSP-C refers to trimagnesium phosphate potassium sodium inorganic thermal insulation coating; DM refers to light calcined magnesia; PDP refers to potassium primary phosphate, and SDP refers to SODIUM PHOSPHATE, MONOBASIC; PCMs refers to phase change material; EV refers to expanded vermiculite, and JG/T refers to Chinese architectural trade standard, and ASTM refers to American Society for testing and materials.
Embodiment 1
In the present embodiment, the raw material of trimagnesium phosphate inorganic thermal insulation coating comprises DM powder, borax, Rutile type Titanium Dioxide, hollow beads, potassium primary phosphate (PDP) powder, and SODIUM PHOSPHATE, MONOBASIC (SDP) solution, and the mixing solutions of SODIUM PHOSPHATE, MONOBASIC (SDP) and potassium primary phosphate (PDP).Wherein, DM powder is by 1200 DEG C of magnesia calcineds 5 hours, and then cross 150 μm of sieves and obtain, its purity is 95.1% (by mass percentage).Its maximum particle diameter of potassium primary phosphate powder is 150 μm.Borax its be chemical pure level and maximum particle diameter is 150 μm.Rutile type Titanium Dioxide its be technical grade, its median size of hollow beads is 40 μm, and density (actual density, true density) is 0.38g/cm
3, ultimate compression strength is 4000psi, and thermal conductivity is 0.127W/ (mK).SDP solution prepared by concrete available tap water, and the mixing solutions of SDP and PDP.In the present embodiment, the concrete composition of thermal insulating coating is in table 1 (in 1, other components are the mass percent accounting for DM to DM, lower same).
Table 1
Its preparation method is as follows:
First mixed by solid material, and then solvent portions is mixed the emulsion making heat insulating coat with solid material, then the emulsion prepared is coated the surface of fiber cement board, fiber cement board is of a size of 200 × 200 × 8mm
3, coating thickness is 0.50mm.According to GB JG/T235-2008, the blank fiber cement board (blank FCP) simultaneously arranging a uncoated coating carries out heat-proof quality test, certainly also comprises the above-mentioned fiber cement board being coated with the present embodiment and existing coating on the market and carries out heat-proof quality test.
The internal surface temperature trend over time of record fiber cement board, and be coated with the maximum difference between the fiber cement board internal surface temperature of coating and blank fiber cement board, as the index evaluating heat-insulation property of heat-insulation coating; In the present embodiment, the coating thickness of thermal insulating coating controls at 0.5mm.Use Conduction Coefficient Detector Basing QTM-500 test fiber cement board before coating after thermal conductivity, thus obtain thermal insulating coating data affected on thermal conductivity, and as another index of evaluation thermal insulating coating; Further, also by solar reflectance that spectrometer ASTM E903-96 tests in 400-1100nm wavelength region.
Fig. 1 indicates blank fiber cement board and is coated with the internal surface temperature trend over time of MPP-C-1, MSP-C-2 and MPSP-C-3 of city's coating materials, the present embodiment, as can be seen from Figure 1, its internal surface temperature of fiber cement board being coated with coating is lower than blank fiber cement board.Further, the maximum difference being coated with city's coating materials, the fiber cement board of MPP-C-1, MSP-C-2 and MPSP-C-3 and the internal surface temperature of blank fiber cement board is respectively 18.7 DEG C, 21.1 DEG C, 27.2 DEG C, 25.4 DEG C.So the present embodiment is better than the effect of heat insulation of thermal insulating coating on the market.Fig. 2 illustrates the impact of thermal insulating coating on thermal conductivity of embodiment.As can be seen from Figure 2 the thermal conductivity being coated with the fiber cement board of MPP-C-1, MSP-C-2 and MPSP-C-3 declines 2.5%, 5.82% and 10.06% respectively.In addition, Fig. 3 indicates the solar reflectance of fiber cement board in 400-1100nm wavelength region being coated with MPP-C-1, MSP-C-2 and MPSP-C-3, as can be seen from Figure 3, the thermal insulating coating of the present embodiment its there is higher solar reflectance, especially in 450-110nm wavelength region.And MSP-C-2 has best solar reflectance.
Embodiment 2
In the present embodiment, the raw material of trimagnesium phosphate inorganic thermal insulation coating comprises the hollow beads of DM powder, borax, Rutile type Titanium Dioxide, white cement, two kinds of different sizes, and the mixing solutions of SODIUM PHOSPHATE, MONOBASIC (SDP) and potassium primary phosphate (PDP).DM powder is by 1200 DEG C of magnesia calcineds 5 hours, and then cross 150 μm of sieves and obtain, its purity is 95.1% (by mass percentage).Borax its be chemical pure level and maximum particle diameter is 150 μm.Rutile type Titanium Dioxide and white cement are technical grade, and maximum particle diameter is 150 μm.The physicals of two kinds of different size hollow beads is shown, it is noted that I type hollow beads in table 2 and the hollow beads adopted in embodiment 1 is identical in table 2.Compared to I type hollow beads, II type hollow beads has less density, and (actual density is 0.15g/cm
3, tap density (bulk density) is 0.079g/cm
3), thermal conductivity is 0.055W/ (mK), and ultimate compression strength lower limit is 300psi, but its mean particle size is 55 μm.Table 3 shows the concrete composition of each thermal insulating coating of the present embodiment.As shown in table 3, in MPSP-C-4, add I type hollow beads; II type hollow beads is added in MPSP-C-6; Add I and II type hollow beads in MPSP-C-5 simultaneously.Identical all with embodiment 1 of the preparation flow of the present embodiment and heat-proof quality test, thermal conductivity test and solar reflectance test etc.
Table 2
| Hollow beads | I | II |
| Color | White | White |
| Actual density (g/cm 3) | 0.38 | 0.15 |
| Tap density (g/cm 3) | 0.182 | 0.0790 |
| Mean particle size (μm) | 40 | 55 |
| Thermal conductivity (W/ (mK)) | 0.127 | 0.0550 |
| Ultimate compression strength (psi) | 4000 | 300 |
Table 3
Fig. 4 shows the internal surface temperature trend over time of MPP-C-4, MSP-C-5 and the MPSP-C-6 being coated with the present embodiment, as can be seen from Figure 4 the maximum difference between the fiber cement board internal surface temperature of the thermal insulating coating of the present embodiment and blank fiber cement board is coated with, as can be seen from Figure 4, be coated with MPP-C-5 and MSP-C-6 and there is better heat-proof quality, because II type hollow beads has lower thermal conductivity than the fiber cement board of coating MPSP-C-4.The maximum difference be coated with between MPP-C-4 and MSP-C-5, the fiber cement board of MPSP-C-6 and the internal surface temperature of blank fiber cement board is respectively 24.8 DEG C, 25.3 DEG C, 25.6 DEG C.This shows, the thermal insulating coating of the present embodiment has splendid heat-proof quality.Fig. 5 shows the impact of the present embodiment thermal insulating coating on fiber cement board thermal conductivity.As can be seen from Figure 5 the thermal conductivity being coated with the fiber cement board of MPSP-C-4, MSP-C-5 and MPSP-C-6 declines 3.91%, 8.95% and 9.62% respectively.The thermal conductivity being coated with the fiber cement board of MSP-C-5 and MPSP-C-6 declines lower than the thermal conductivity of the fiber cement board being coated with MPSP-C-4, is owing to which employs II type hollow beads.Fig. 6 shows the solar reflectance of fiber cement board in 400-1100nm wavelength region being coated with MPSP-C-4, MSP-C-5 and MPSP-C-6, as can be seen from Figure 6, all thermal insulating coatings in the present embodiment all have higher solar reflectance, especially MPSP-C-4 and MSP-C-5, they are in 500 ~ 1100nm wavelength region, and solar reflectance is more than 90%.
Embodiment 3
In the present embodiment, the raw material of trimagnesium phosphate inorganic thermal insulation coating comprises DM powder, borax, Rutile type Titanium Dioxide, white cement, phase change material, and the mixing solutions of PDP and SDP.DM powder is by 1200 DEG C of magnesia calcineds 5 hours, and then cross 150 μm of sieves and obtain, its purity is 95.1% (by mass percentage).Borax its be chemical pure level and maximum particle diameter is 150 μm.Rutile type Titanium Dioxide and white cement are technical grade, and maximum particle diameter is also 150 μm.The thermal property of phase change material is in table 4, and the parameter of dissolution process and condensing process all (can comprise onset melting temperature T see this table
m-onset, latent heat and initial coagulation temperature T
f-onsetand latent heat), the phase change material of I type its be white powder, onset melting temperature T
m-onsetbe 26.87 DEG C, latent heat is 89.04J/g, is particularly suitable for indoor use.The phase change material of II type its be pale yellow powder shape, its onset melting temperature T
m-onsetbe 41.10 DEG C, latent heat is 70.51J/g.The thermal insulating coating of the present embodiment specifically forms in table 5.As shown in table 5, in MPSP-C-7, add the phase change material of I type, and the mixing solutions of PDP and SDP; In MPSP-C-8, add the phase change material of II type, and the mixing solutions of PDP and SDP.In addition, identical all with embodiment 1,2 such as the preparation process of the present embodiment and heat insulation test, thermal conductivity test and solar energy reflection attribute test.
Table 4
Table 5
Fig. 7 shows the fiber cement board internal surface temperature trend over time of MSP-C-7 and MPSP-C-8 being coated with the present embodiment, as can be seen from Figure 7, the fiber cement board being coated with MPP-C-7 with MSP-C-8 is compared blank fiber cement board and is shown extremely low internal surface temperature, and it is respectively 19.6 DEG C and 24.1 DEG C with the maximum difference of the internal surface temperature of blank fiber cement board respectively.So the thermal insulating coating of the present embodiment has splendid heat-proof quality.The thermal insulating coating that Fig. 8 shows the present embodiment affects the thermal conductivity of fiber cement board.As can be seen from 8, the thermal conductivity being coated with the fiber cement board of MPSP-C-7 have dropped 10.76%, and the thermal conductivity being coated with the fiber cement board of MPSP-C-8 have dropped 5.47%.Fig. 9 shows the solar reflectance of fiber cement board within the scope of wavelength 400-1100nm being coated with MSP-C-7 and MPSP-C-8, and as can be seen from Figure 9 MPSP-C-7 has very high solar reflectance.And MPSP-C-8 in the solar reflectance of 500-1100nm wavelength region more than 70%.
Embodiment 4
In the present embodiment, the raw material of trimagnesium phosphate inorganic thermal insulation coating comprises DM powder, borax, Rutile type Titanium Dioxide, white cement, pigment (yellow and blue), the mixing solutions of PDP and SDP.DM powder is by 1200 DEG C of magnesia calcineds 5 hours, and then cross 150 μm of sieves and obtain, its purity is 95.1% (by mass percentage).Borax its be chemical pure level and maximum particle diameter is 150 μm.Rutile type Titanium Dioxide and white cement are technical grade, and maximum particle diameter is also 150 μm.Table 6 shows the concrete composition of each thermal insulating coating of the present embodiment.As shown in table 6, in MPSP-C-9 and MPSP-C-10, add the pigment of 0.5% of DM grain weight amount.Identical all with embodiment 1,2,3 such as the preparation process of the present embodiment and heat insulation test, thermal conductivity test and solar reflectance test.
Table 6
Figure 10 shows the internal surface temperature trend over time of the fiber cement board of MPP-C-9, the MSP-C-10 being coated with the present embodiment, as can be seen from Figure 10, the fiber cement board being coated with MPP-C-9 and MSP-C-10 has lower internal surface temperature than blank fiber cement board.The maximum difference being coated with the internal surface temperature of MPP-C-9 and MSP-C-10 fiber cement board and blank fiber cement board is respectively 22.7 DEG C and 21.2 DEG C.Figure 11 shows the thermal conductivity changing conditions of the fiber cement board being coated with MPP-C-9 and MSP-C-10, and the thermal conductivity being coated with the fiber cement board of MPP-C-9 and MSP-C-10 declines 6.15% and 5.87% respectively.Figure 12 shows the solar reflectance of fiber cement board in 400-1100nm wavelength region being coated with MPP-C-9 and MSP-C-10, and as can be seen from Figure 12 in 560-1100nm wavelength region, MPSP-C-9 solar reflectance is more than 80%.MPSP-C-10 is then be more than 80% in 550-710nm wavelength region, owing to which employs blue pigments.
Embodiment 5
In the present embodiment, the raw material of trimagnesium phosphate inorganic thermal insulation coating comprises DM powder, borax, Rutile type Titanium Dioxide, white cement, mineral filler (comprising calcium carbonate crystal powder, EV powder and nano clay), and the mixing solutions of SDP and PDP.DM powder is by 1200 DEG C of magnesia calcineds 5 hours, and then cross 150 μm of sieves and obtain, its purity is 95.1% (by mass percentage).Borax its be chemical pure level and maximum particle diameter is 150 μm.Rutile type Titanium Dioxide and white cement are technical grade, and maximum particle diameter is also 150 μm.Calcium carbonate crystal powder to be long-width ratio be 40 lenticular.EV powder heats 1h in advance under 800 DEG C of conditions, and its maximum particle diameter is 150 μm.Its mean particle size of nano clay is 30nm.The thermal insulating coating of the present embodiment specifically forms in table 7.As shown in table 7, containing the calcium carbonate crystal powder of 12.5% in MPSP-C-11, containing the EV powder of 25% in MPSP-C-12, containing the nano clay of 1.05% in MPSP-C-13.Identical all with embodiment 1,2,3,4 such as the preparation process of the present embodiment and heat insulation test, thermal conductivity test and solar reflectance test.
Table 7
Figure 13 shows the internal surface temperature trend over time of the fiber cement board of MPSP-C-11, MPSP-C-12, the MPSP-C-13 being coated with the present embodiment, as can be seen from Figure 13, the maximum difference being coated with the fiber cement board of MPSP-C-11, MPSP-C-12, MPSP-C-13 and the internal surface temperature of blank fiber cement board is respectively 23.7 DEG C, 25.1 DEG C and 25.1 DEG C.Figure 14 shows the thermal conductivity changing conditions of the fiber cement board being coated with MPSP-C-11, MPSP-C-12, MPSP-C-13, and the thermal conductivity being coated with the fiber cement board of MPSP-C-11, MPSP-C-12, MPSP-C-13 declines 12.33%, 11.82% and 14.6% respectively.Figure 15 shows the solar reflectance of fiber cement board in 400-1100nm wavelength region being coated with MPSP-C-11, MPSP-C-12, MPSP-C-13, according to the difference of added mineral additive, solar reflectance is different, wherein, in 600-1100nm wavelength region, the MPSP-C-12 that with the addition of expanded vermiculite shows the highest solar reflectance, more than 80%.
Should be understood that, application of the present invention is not limited to above-mentioned citing, for those of ordinary skills, can be improved according to the above description or convert, and all these improve and convert the protection domain that all should belong to claims of the present invention.
Claims (10)
1. a trimagnesium phosphate inorganic thermal insulation coating, is characterized in that, comprising: gelling material, functional stuffing, additive, and described gelling material is trimagnesium phosphate.
2. trimagnesium phosphate inorganic thermal insulation coating according to claim 1, it is characterized in that, described functional stuffing comprises one or more in hollow beads, titanium oxide, phase change material, pigment and mineral filler.
3. trimagnesium phosphate inorganic thermal insulation coating according to claim 2, it is characterized in that, described mineral filler comprises one or more in white cement, calcium carbonate, expanded vermiculite, diatomite, pearlstone and nano clay.
4. trimagnesium phosphate inorganic thermal insulation coating according to claim 1, it is characterized in that, described additive comprises one or more in borax, boric acid, defoamer and water.
5. trimagnesium phosphate inorganic thermal insulation coating according to claim 1, is characterized in that, described trimagnesium phosphate is obtained by activated magnesia and phosphate reaction.
6. trimagnesium phosphate inorganic thermal insulation coating according to claim 5, is characterized in that, described phosphoric acid salt is one or more in potassium primary phosphate, SODIUM PHOSPHATE, MONOBASIC and Sodium phosphate dibasic.
7. trimagnesium phosphate inorganic thermal insulation coating according to claim 5, is characterized in that, described activated magnesia is light calcined magnesia, and described light calcined magnesia is obtained by magnesia calcined under 1000 DEG C ~ 1700 DEG C conditions for more than 1 hour.
8. trimagnesium phosphate inorganic thermal insulation coating according to claim 5, is characterized in that, described activated magnesia and phosphatic mol ratio are 1 ~ 20:1.
9. a preparation method for trimagnesium phosphate inorganic thermal insulation coating as claimed in claim 1, is characterized in that, comprise step:
Solids mixing in raw material is formed solid mixture;
Solution in raw material is mixed formation mixing solutions;
In use, mixing solutions is mixed the emulsion making thermal insulating coating with solid mixture.
10. preparation method according to claim 9, is characterized in that, described emulsion coats target surface in the mode of brushing, roller coat, blade coating or spraying.
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| CN116836573A (en) * | 2023-06-29 | 2023-10-03 | 昆明理工大学 | Magnesium phosphate self-cleaning cement paint and application thereof |
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| CN106336693A (en) * | 2016-03-04 | 2017-01-18 | 赵国升 | High-concentration chemical solvent resisting inorganic material coating |
| CN106336694A (en) * | 2016-03-04 | 2017-01-18 | 赵国升 | Ultrahigh temperature holding and temperature lowering inorganic material coating |
| CN106810178A (en) * | 2016-10-28 | 2017-06-09 | 赵国升 | Inorganic material fast-drying type VOC (VOC) gas leak-stopping coating |
| CN110698890A (en) * | 2019-09-30 | 2020-01-17 | 武汉工程大学 | Inorganic high-temperature-resistant heat-conducting anticorrosive paint and preparation and use methods thereof |
| CN111875337A (en) * | 2020-07-14 | 2020-11-03 | 绍兴百立盛新材料科技有限公司 | Inorganic cooling coating and preparation method thereof |
| CN115849858A (en) * | 2022-12-26 | 2023-03-28 | 中发创新(安徽)新材料有限公司 | Thermal insulation slurry of aerogel precursor composite magnesium-based gelling agent |
| CN115849858B (en) * | 2022-12-26 | 2023-11-28 | 中发创新(安徽)新材料有限公司 | Heat preservation slurry of aerogel precursor composite magnesium-based gelatinizing agent |
| CN116836573A (en) * | 2023-06-29 | 2023-10-03 | 昆明理工大学 | Magnesium phosphate self-cleaning cement paint and application thereof |
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