CN110818338A - Outdoor low-heat-absorption inorganic artificial stone plate and preparation method thereof - Google Patents
Outdoor low-heat-absorption inorganic artificial stone plate and preparation method thereof Download PDFInfo
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- CN110818338A CN110818338A CN201911122639.6A CN201911122639A CN110818338A CN 110818338 A CN110818338 A CN 110818338A CN 201911122639 A CN201911122639 A CN 201911122639A CN 110818338 A CN110818338 A CN 110818338A
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- C—CHEMISTRY; METALLURGY
- C04—CEMENTS; CONCRETE; ARTIFICIAL STONE; CERAMICS; REFRACTORIES
- C04B—LIME, MAGNESIA; SLAG; CEMENTS; COMPOSITIONS THEREOF, e.g. MORTARS, CONCRETE OR LIKE BUILDING MATERIALS; ARTIFICIAL STONE; CERAMICS; REFRACTORIES; TREATMENT OF NATURAL STONE
- C04B28/00—Compositions of mortars, concrete or artificial stone, containing inorganic binders or the reaction product of an inorganic and an organic binder, e.g. polycarboxylate cements
- C04B28/02—Compositions of mortars, concrete or artificial stone, containing inorganic binders or the reaction product of an inorganic and an organic binder, e.g. polycarboxylate cements containing hydraulic cements other than calcium sulfates
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- C—CHEMISTRY; METALLURGY
- C04—CEMENTS; CONCRETE; ARTIFICIAL STONE; CERAMICS; REFRACTORIES
- C04B—LIME, MAGNESIA; SLAG; CEMENTS; COMPOSITIONS THEREOF, e.g. MORTARS, CONCRETE OR LIKE BUILDING MATERIALS; ARTIFICIAL STONE; CERAMICS; REFRACTORIES; TREATMENT OF NATURAL STONE
- C04B2111/00—Mortars, concrete or artificial stone or mixtures to prepare them, characterised by specific function, property or use
- C04B2111/20—Resistance against chemical, physical or biological attack
- C04B2111/27—Water resistance, i.e. waterproof or water-repellent materials
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- C—CHEMISTRY; METALLURGY
- C04—CEMENTS; CONCRETE; ARTIFICIAL STONE; CERAMICS; REFRACTORIES
- C04B—LIME, MAGNESIA; SLAG; CEMENTS; COMPOSITIONS THEREOF, e.g. MORTARS, CONCRETE OR LIKE BUILDING MATERIALS; ARTIFICIAL STONE; CERAMICS; REFRACTORIES; TREATMENT OF NATURAL STONE
- C04B2201/00—Mortars, concrete or artificial stone characterised by specific physical values
- C04B2201/50—Mortars, concrete or artificial stone characterised by specific physical values for the mechanical strength
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- Engineering & Computer Science (AREA)
- Ceramic Engineering (AREA)
- Chemical Kinetics & Catalysis (AREA)
- Inorganic Chemistry (AREA)
- Materials Engineering (AREA)
- Structural Engineering (AREA)
- Organic Chemistry (AREA)
- Curing Cements, Concrete, And Artificial Stone (AREA)
Abstract
The invention relates to the technical field of artificial stones, and discloses an outdoor low-heat-absorption inorganic artificial stone plate and a preparation method thereof, wherein the outdoor low-heat-absorption inorganic artificial stone plate is prepared by prefabricating ultrahigh-performance mineral powder with the compressive strength of 100-150 MPa, and the ultrahigh-performance mineral powder comprises the following raw materials in parts by weight: 90-120 parts of quartz sand, 15-30 parts of quartz powder, 40-60 parts of quartz glass, 80-100 parts of mineral active powder, 4-15 parts of titanium dioxide, 10-18 parts of water, 2-5 parts of a water reducing agent and 3-10 parts of pigment. The inorganic artificial stone slab has the advantages of low heat absorption, high sunlight reflectivity, low shrinkage, high durability, high mechanical property, good decorative effect, good stain resistance and water resistance, low overall comprehensive cost and low cost, and is suitable for popularization and application.
Description
Technical Field
The invention relates to the technical field of artificial stones, in particular to an inorganic artificial stone plate with low heat absorption for outdoor use and a preparation method thereof.
Background
With the continuous improvement of the living standard of people in China, the electric gap is continuously enlarged, the situation that electricity is limited when a high-energy-consumption enterprise is switched on in a peak period of electricity utilization often occurs in summer, and the lives of residents are seriously influenced. The sunlight can raise the temperature of the roof and the outer wall of the building, the indoor temperature is also raised through heat transfer, and air conditioners and fans used for cooling in summer are one of the main reasons of power consumption peaks. The urban air temperature is 3-5 ℃ higher than that of suburbs, which is called as a heat island effect, so that the demand of urban residents on electric power is further increased. According to statistics, the cooling equipment such as air conditioners, fans and the like which are globally used every year accounts for more than 20% of the total energy consumption. In order to relieve the current situation of power supply tension, energy conservation needs to be advocated vigorously besides the development of hydropower and nuclear power engineering and the improvement of a power supply network, and the building energy conservation is very important in numerous energy-saving measures. If the building roofing material has higher sunlight reflectivity (sunlight reflecting capacity) and higher heat emissivity (radiation heat dissipation capacity), the use frequency of the air conditioner can be reduced, and the indoor comfort level is increased, which is important for reducing the building energy consumption and lightening the urban heat island effect.
Therefore, the research on a novel inorganic decorative plate which integrates self-low heat absorption, high sunlight reflectivity, good decorative effect, good durability and vivid stone-like effect is the development direction of the building decorative material industry.
The outdoor low-heat-absorption inorganic artificial stone slab is a novel inorganic decorative slab researched and developed aiming at the high energy consumption of the traditional building structure, has low heat absorption, high sunlight reflectivity, low shrinkage, high durability, high mechanical property, good decorative effect and good stain resistance and water resistance, can be widely applied to outdoor building decoration, has wide market application prospect, and leads the development direction of future inorganic decorative slabs.
Disclosure of Invention
In view of the above, the present invention provides an artificial stone slab with low heat absorption, high solar reflectance, low shrinkage, high durability, high mechanical properties, good decorative effect, and good stain-resistant and waterproof properties and a preparation method thereof, in order to overcome at least one of the above disadvantages of the prior art, and solves the problems of high heat absorption and low heat reflectance of the conventional outdoor decorative board.
In order to solve the technical problems, the invention adopts the following technical scheme:
the outdoor low-heat-absorption inorganic artificial stone slab is prepared by prefabricating ultrahigh-performance mineral powder with compressive strength of 100-150 MPa, wherein the ultrahigh-performance mineral powder comprises the following raw material components in parts by weight: 90-120 parts of quartz sand, 15-30 parts of quartz powder, 40-60 parts of quartz glass, 80-100 parts of mineral active powder, 4-15 parts of titanium dioxide, 10-18 parts of water, 2-5 parts of a water reducing agent and 3-10 parts of pigment.
Further, the ultrahigh-performance mineral powder comprises the following raw material components in parts by weight: 100-110 parts of quartz sand, 19-26 parts of quartz powder, 45-55 parts of quartz glass, 85-95 parts of mineral active powder, 7-12 parts of titanium dioxide, 12-16 parts of water, 3-4 parts of a water reducing agent and 5-8 parts of pigment.
Furthermore, the active index of the mineral active powder is not less than 110%, cement with the activity index of more than 42.5 is used as a main body, and one or more of silica fume, mineral powder, glass beads, ceramic polishing powder, aluminum hydroxide powder and zeolite powder are added. The mass ratio of the mineral active powder components is cement: silica fume: mineral powder: glass beads: ceramic polishing powder: aluminum hydroxide powder: the zeolite powder is 1: 0.05-0.2: 0.5-1: 0-0.3: 0-0.2: 0-0.15: 0 to 0.2.
Furthermore, the titanium dioxide is rutile type nano titanium dioxide with the particle size of 10-1000 nm, and the reflectivity of the inorganic artificial stone plate to sunlight in the wavelength range from visible light to near infrared can be improved.
Further, the quartz sand is full-transparent quartz sand with the particle size of 4-70 meshes, the particle size of the quartz powder is 150-800 meshes, and the quartz glass is one or two of mirror glass or colorless glass with the particle size of 20-70 meshes.
The preparation method of the outdoor low-heat-absorption inorganic artificial stone slab comprises the following steps:
s1, calculating the use amount of each raw material according to the proportion, and premixing all titanium dioxide, quartz sand, quartz powder and quartz glass for 2-4 minutes;
s2, adding all mineral active powder, pigment and 40 wt% of water into the premixed aggregate obtained in the step S1, and stirring for 1-2 minutes;
s3, adding all the water reducing agent and the residual 60 wt% of water into the pre-wetted mixture obtained in the step S2, and fully stirring for 7-9 minutes to obtain a mixture for later use;
s4, preparing a panel mould, and uniformly distributing the mixture prepared in the step S3 in the panel mould according to the thickness calculation and weighing;
s5, covering an isolation and moisture retention film on the mixture in the panel mold in the step S4, and then putting the mixture into a vacuum press for vacuumizing and exhausting and simultaneously performing vibration pressing;
s6, curing the board pressed in the step S5 at 40 ℃ for 6-8 hours, and then heating to 80-90 ℃ for curing for 12-16 hours to obtain a blank board;
and S7, removing the isolation and moisture retention film from the blank plate obtained in the step S6, and scraping, fixing the thickness and polishing to obtain the outdoor low-heat-absorption inorganic artificial stone plate.
Further, in step S3, the mixture material is stirred for a wibo consistency of 5 to 30S; the initial setting time after stirring and mixing is not less than 60 minutes. In step S5, the vacuumizing time is not less than 60S, and the pressing time is not less than 120S; the vacuum pressure is-0.07 to-0.1 MPa, the pressure load of the press is not less than 1MPa, and the pressure is not less than 5000 kN. In step S6, the high temperature curing process maintains the humidity above 75%.
Compared with the prior art, the invention has the following beneficial effects:
(1) the outdoor low-heat-absorption inorganic artificial stone plate has the characteristics of low heat absorption, high sunlight reflectivity, low shrinkage, high durability, high mechanical property, good decorative effect, good stain resistance and water resistance, compressive strength of 100-150 MPa, electric flux of less than 100 coulombs and the like.
(2) The preparation method of the outdoor low-heat-absorption inorganic artificial stone slab has the advantages of less consumption of the die and short turnover period of the die, and solves the problems of more consumption and high cost of the die of the traditional decorative concrete slab.
(3) The low-heat-absorption inorganic artificial stone plate for outdoor use provided by the invention has the advantages of wide raw material source, realization of industrial production, high production efficiency, green, energy-saving and environment-friendly products and economic and social benefits.
(4) The low-heat-absorption inorganic artificial stone slab for outdoor use, disclosed by the invention, is doped with the nano titanium dioxide, so that the sunlight reflectivity of the artificial stone slab is improved, and the sunlight absorption of the artificial stone slab is reduced, thereby reducing the building energy consumption.
Detailed Description
The present invention will be described in further detail with reference to specific examples.
Example 1
The outdoor low-heat-absorption inorganic artificial stone slab is prepared by prefabricating ultrahigh-performance mineral powder with compressive strength of 100-150 MPa, wherein the ultrahigh-performance mineral powder comprises the following raw material components in parts by weight: 90 parts of quartz sand, 15 parts of quartz powder, 40 parts of quartz glass, 80 parts of mineral active powder, 4 parts of titanium dioxide, 10 parts of water, 2 parts of a water reducing agent and 3 parts of pigment.
The mineral active powder has an activity index of not less than 110%, and is prepared by using cement of more than 42.5 as a main body and adding silica fume, mineral powder, glass microspheres, ceramic polishing powder, aluminum hydroxide powder and zeolite powder. The mass ratio of the mineral active powder components is cement: silica fume: mineral powder: glass beads: ceramic polishing powder: aluminum hydroxide powder: the zeolite powder is 1: 0.125: 0.75: 0.15: 0.1: 0.075: 0.1.
the titanium dioxide is rutile type nano titanium dioxide with the particle size of 10-1000 nm, and the reflectivity of the inorganic artificial stone plate to sunlight in the wavelength range from visible light to near infrared can be improved.
The quartz sand is full-transparent quartz sand with the particle size of 4-70 meshes, the particle size of the quartz powder is 150-800 meshes, and the quartz glass is one or two of mirror glass or colorless glass with the particle size of 20-70 meshes.
The preparation method of the outdoor low-heat-absorption inorganic artificial stone slab comprises the following steps:
s1, calculating the use amount of each raw material according to the proportion, and premixing all titanium dioxide, quartz sand, quartz powder and quartz glass for 2-4 minutes;
s2, adding all mineral active powder, pigment and 40 wt% of water into the premixed aggregate obtained in the step S1, and stirring for 1-2 minutes;
s3, adding all the water reducing agent and the residual 60 wt% of water into the pre-wetted mixture obtained in the step S2, and fully stirring for 7-9 minutes to obtain a mixture for later use;
s4, preparing a panel mould, and uniformly distributing the mixture prepared in the step S3 in the panel mould according to the thickness calculation and weighing;
s5, covering an isolation and moisture retention film on the mixture in the panel mold in the step S4, and then putting the mixture into a vacuum press for vacuumizing and exhausting and simultaneously performing vibration pressing;
s6, curing the board pressed in the step S5 at 40 ℃ for 6-8 hours, and then heating to 80-90 ℃ for curing for 12-16 hours to obtain a blank board;
and S7, removing the isolation and moisture retention film from the blank plate obtained in the step S6, and scraping, fixing the thickness and polishing to obtain the outdoor low-heat-absorption inorganic artificial stone plate.
In step S3, the mixture material is stirred for a Ubber consistency of 5-30S; the initial setting time after stirring and mixing is not less than 60 minutes. In step S5, the vacuumizing time is not less than 60S, and the pressing time is not less than 120S; the vacuum pressure is-0.07 to-0.1 MPa, the pressure load of the press is not less than 1MPa, and the pressure is not less than 5000 kN. In step S6, the high temperature curing process maintains the humidity above 75%.
Example 2
The conditions were the same as in example 1 except that the formulation of the ultra-high performance mineral powder was different.
An outdoor low-heat-absorption inorganic artificial stone slab is prepared by prefabricating ultrahigh-performance mineral powder with the compressive strength of 100-150 MPa, wherein the ultrahigh-performance mineral powder comprises the following raw material components in parts by weight: 120 parts of quartz sand, 30 parts of quartz powder, 60 parts of quartz glass, 100 parts of mineral active powder, 15 parts of titanium dioxide, 18 parts of water, 5 parts of a water reducing agent and 10 parts of pigment.
Example 3
The conditions were the same as in example 1 except that the formulation of the ultra-high performance mineral powder was different.
An outdoor low-heat-absorption inorganic artificial stone slab is prepared by prefabricating ultrahigh-performance mineral powder with the compressive strength of 100-150 MPa, wherein the ultrahigh-performance mineral powder comprises the following raw material components in parts by weight: 100 parts of quartz sand, 19 parts of quartz powder, 45 parts of quartz glass, 85 parts of mineral active powder, 7 parts of titanium dioxide, 12 parts of water, 3 parts of a water reducing agent and 5 parts of pigment.
Example 4
The conditions were the same as in example 1 except that the formulation of the ultra-high performance mineral powder was different.
An outdoor low-heat-absorption inorganic artificial stone slab is prepared by prefabricating ultrahigh-performance mineral powder with the compressive strength of 100-150 MPa, wherein the ultrahigh-performance mineral powder comprises the following raw material components in parts by weight: 110 parts of quartz sand, 26 parts of quartz powder, 55 parts of quartz glass, 95 parts of mineral active powder, 12 parts of titanium dioxide, 16 parts of water, 4 parts of a water reducing agent and 8 parts of pigment. The mineral active powder takes cement above 42.5 as a main body, silica fume and mineral powder are added, and the mass ratio of the components of the mineral active powder is as follows: silica fume: 1 part of mineral powder: 0.05: 0.5.
example 5
The conditions were the same as in example 1 except that the formulation of the ultra-high performance mineral powder was different.
An outdoor low-heat-absorption inorganic artificial stone slab is prepared by prefabricating ultrahigh-performance mineral powder with the compressive strength of 100-150 MPa, wherein the ultrahigh-performance mineral powder comprises the following raw material components in parts by weight: 105 parts of quartz sand, 22.5 parts of quartz powder, 50 parts of quartz glass, 90 parts of mineral active powder, 9.5 parts of titanium dioxide, 14 parts of water, 3.5 parts of a water reducing agent and 6.5 parts of pigment. The mineral active powder takes cement of more than 42.5 as a main body, and silica fume, mineral powder, glass micro-beads, ceramic polishing powder, aluminum hydroxide powder and zeolite powder are added, wherein the mass ratio of the components of the mineral active powder is cement: silica fume: mineral powder: glass beads: ceramic polishing powder: aluminum hydroxide powder: the zeolite powder is 1: 0.05-0.2: 0.5-1: 0-0.3: 0-0.2: 0-0.15: 0 to 0.2.
Comparative example 1
The conditions were the same as in example 1 except that 60 parts of the mineral active powder was used as the ultrahigh-performance mineral powder.
Comparative example 2
The conditions were the same as in example 1 except that 2 parts of titanium dioxide were contained in the ultrahigh-performance mineral powder.
Comparative example 3
The conditions were the same as in example 1 except that 0 part of titanium dioxide was contained in the ultrahigh-performance mineral powder.
The performance test of the standard test pieces prepared from the outdoor low-heat-absorption inorganic artificial stone plates prepared in the above embodiments 1 to 5 and the comparative examples 1 to 3 was performed, and the test results are shown in table 1:
TABLE 1 Performance test results of low heat absorption inorganic artificial stone plate for outdoor use
From table 1, in the comparative example 1, 60 parts of the mineral active powder has more reduced compressive strength and stain-resistant and waterproof performance, slightly reduced solar reflectance and less increased temperature after 4 hours of solar irradiation compared with the example 1; compared with the example 1, the titanium dioxide of the comparative example 2 has no change of the compressive strength basically, the stain resistance, the waterproof performance and the solar reflectivity are both reduced more, and the temperature rise is increased more after the sunshine is irradiated for 4 hours; comparative example 3 titanium dioxide 0 parts, compared with example 1, compression strength was not changed basically, stain-resistant waterproof property and solar reflectance were both decreased much, and temperature rise was increased much after 4 hours of solar irradiation. Through a large number of tests, the selected mineral active powder and titanium dioxide are optimal; the nanometer titanium dioxide has high sunlight reflectivity, so that the sunlight reflectivity of the artificial stone slab is improved, the absorption of the panel to sunlight is reduced, and the temperature rise is reduced.
It should be understood that the above-described embodiments of the present invention are merely examples for clearly illustrating the present invention, and are not intended to limit the embodiments of the present invention. Other variations and modifications will be apparent to persons skilled in the art in light of the above description. And are neither required nor exhaustive of all embodiments. Any modification, equivalent replacement, and improvement made within the spirit and principle of the present invention should be included in the protection scope of the claims of the present invention.
Claims (10)
1. The outdoor low-heat-absorption inorganic artificial stone slab is characterized by being prepared by prefabricating ultrahigh-performance mineral powder with the compressive strength of 100-150 MPa, wherein the ultrahigh-performance mineral powder comprises the following raw material components in parts by weight: 90-120 parts of quartz sand, 15-30 parts of quartz powder, 40-60 parts of quartz glass, 80-100 parts of mineral active powder, 4-15 parts of titanium dioxide, 10-18 parts of water, 2-5 parts of a water reducing agent and 3-10 parts of pigment.
2. The outdoor low heat absorption inorganic artificial stone plate as claimed in claim 1, wherein the ultrahigh performance mineral powder comprises the following raw material components in parts by weight: 100-110 parts of quartz sand, 19-26 parts of quartz powder, 45-55 parts of quartz glass, 85-95 parts of mineral active powder, 7-12 parts of titanium dioxide, 12-16 parts of water, 3-4 parts of a water reducing agent and 5-8 parts of pigment.
3. The outdoor low-heat-absorption inorganic artificial stone slab as claimed in claim 1, wherein the active index of the mineral active powder is not less than 110%, and the mineral active powder is mainly cement with a content of more than 42.5 and is doped with one or more of silica fume, mineral powder, glass beads, ceramic polishing powder, aluminum hydroxide powder and zeolite powder.
4. An outdoor inorganic artificial stone plate with low heat absorption according to claim 3, characterized in that the mass ratio of the mineral active powder components is cement: silica fume: mineral powder: glass beads: ceramic polishing powder: aluminum hydroxide powder: the zeolite powder is 1: 0.05-0.2: 0.5-1: 0-0.3: 0-0.2: 0-0.15: 0 to 0.2.
5. The inorganic artificial stone plate with low heat absorption for outdoor use as claimed in claim 1, wherein the titanium dioxide is rutile type nano titanium dioxide with a particle size of 10-1000 nm.
6. The inorganic artificial stone plate with low heat absorption for outdoor use as claimed in claim 1, wherein the quartz sand is fully transparent quartz sand with a particle size of 4-70 mesh, the particle size of the quartz powder is 150-800 mesh, and the quartz glass is one or two of mirror glass or colorless glass with a particle size of 20-70 mesh.
7. A method for producing an inorganic artificial stone board with low heat absorption for outdoor use as claimed in any one of claims 1 to 6, comprising the steps of:
s1, calculating the use amount of each raw material according to the proportion, and premixing all titanium dioxide, quartz sand, quartz powder and quartz glass for 2-4 minutes;
s2, adding all mineral active powder, pigment and 40 wt% of water into the premixed aggregate obtained in the step S1, and stirring for 1-2 minutes;
s3, adding all the water reducing agent and the residual 60 wt% of water into the pre-wetted mixture obtained in the step S2, and fully stirring for 7-9 minutes to obtain a mixture for later use;
s4, preparing a panel mould, and uniformly distributing the mixture prepared in the step S3 in the panel mould according to the thickness calculation and weighing;
s5, covering an isolation and moisture retention film on the mixture in the panel mold in the step S4, and then putting the mixture into a vacuum press for vacuumizing and exhausting and simultaneously performing vibration pressing;
s6, curing the board pressed in the step S5 at 40 ℃ for 6-8 hours, and then heating to 80-90 ℃ for curing for 12-16 hours to obtain a blank board;
and S7, removing the isolation and moisture retention film from the blank plate obtained in the step S6, and scraping, fixing the thickness and polishing to obtain the outdoor low-heat-absorption inorganic artificial stone plate.
8. The method as claimed in claim 7, wherein in step S3, the mixture is stirred to have a Veeber consistency of 5-30S; the initial setting time after stirring and mixing is not less than 60 minutes.
9. The method as claimed in claim 7, wherein in step S5, the evacuation time is not less than 60S, and the pressing time is not less than 120S; the vacuum pressure is-0.07 to-0.1 MPa, the pressure load of the press is not less than 1MPa, and the pressure is not less than 5000 kN.
10. The method as claimed in claim 7, wherein the high temperature curing process maintains the humidity at 75% or more in step S6.
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| CN111732377A (en) * | 2020-07-06 | 2020-10-02 | 济南大学 | Inorganic ceramic artificial board and preparation method thereof |
| CN112010596A (en) * | 2020-10-29 | 2020-12-01 | 佛山市东鹏陶瓷发展有限公司 | Hydrophobic cement board and preparation method thereof |
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