CN110452022B - Durable formaldehyde-degrading marble tile and preparation method thereof - Google Patents
Durable formaldehyde-degrading marble tile and preparation method thereof Download PDFInfo
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- CN110452022B CN110452022B CN201910733110.1A CN201910733110A CN110452022B CN 110452022 B CN110452022 B CN 110452022B CN 201910733110 A CN201910733110 A CN 201910733110A CN 110452022 B CN110452022 B CN 110452022B
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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
- C04B41/00—After-treatment of mortars, concrete, artificial stone or ceramics; Treatment of natural stone
- C04B41/45—Coating or impregnating, e.g. injection in masonry, partial coating of green or fired ceramics, organic coating compositions for adhering together two concrete elements
- C04B41/52—Multiple coating or impregnating multiple coating or impregnating with the same composition or with compositions only differing in the concentration of the constituents, is classified as single coating or impregnation
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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
- C04B41/00—After-treatment of mortars, concrete, artificial stone or ceramics; Treatment of natural stone
- C04B41/80—After-treatment of mortars, concrete, artificial stone or ceramics; Treatment of natural stone of only ceramics
- C04B41/81—Coating or impregnation
- C04B41/89—Coating or impregnation for obtaining at least two superposed coatings having different compositions
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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
- C04B2111/00017—Aspects relating to the protection of the environment
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Abstract
The invention discloses a preparation method of a durable formaldehyde-degrading marble tile, which comprises the following steps: (1) the surface of the marble ceramic tile presents a concave-convex structure; (2) uniformly coating a layer of wax water on the concave-convex structure on the surface of the marble tile to form a cured coating; (3) the photocatalyst particles are injected into the cured coating by using waxing equipment, so that the photocatalyst particles are embedded in the cured coating and are locked on the marble tile along with the hardening of the cured coating; (4) uniformly spraying a photocatalyst with visible light activity on the marble tile by adopting high-pressure spraying equipment; (5) and (4) accelerating the curing of the cured coating treated in the step (4) by adopting a heating curing process. The invention realizes that photocatalyst particles are combined with the ceramic tile in an embedded and embedded manner, and realizes the durability of the formaldehyde degradation function; moreover, by means of the concave-convex physical structure of the ceramic tile, photocatalyst particles are not easy to wear, and the durability of the ceramic tile is further improved.
Description
Technical Field
The invention relates to the field of preparation of formaldehyde-degrading ceramic tiles, in particular to a durable formaldehyde-degrading marble ceramic tile and a preparation method thereof.
Background
At present, the research on the technology for degrading formaldehyde of the ceramic tile is also few, and the technology can be roughly divided into three types, one type is that nano titanium dioxide or nano zinc oxide powder with a photocatalytic effect is added into glaze to be fired together, the method solves the problem of functional durability on the surface, but the problem of failure due to crystal transformation can occur after the high-temperature firing, and the nano material is mixed with the glaze to cause a large amount of agglomeration, so that the performance of the ceramic tile is further lost; the other type is secondary firing, the surface of the fired ceramic tile is uniformly coated with a precursor of titanium dioxide, and then the ceramic tile is calcined at a specific temperature to obtain an expected crystal form, the method can obtain a formaldehyde-degrading ceramic tile product with a certain effect under the ultraviolet light condition, but the ceramic tile cannot be subjected to subsequent polishing and waxing, the antifouling effect and the ceramic tile surface effect are difficult to be considered simultaneously, and the production cost is greatly increased due to the need of coating and secondary firing; the last method is to directly coat a layer of photocatalyst before the ceramic tile is packed, the operation process of the method is simple, other performances of the ceramic tile cannot be influenced, but the photocatalyst particles cannot be firmly combined on the ceramic tile due to the fact that most of the ceramic tile is a bright surface, and therefore the practical use value is lost. Therefore, the three technologies are not applied to the ceramic industry in an industrialized mode, and only stay in a laboratory research stage.
Disclosure of Invention
Based on the above, the invention aims to overcome the defects of the prior art and provide a preparation method of a durable formaldehyde-degraded marble tile. The invention aims to firmly combine the photocatalyst with visible light activity on the marble tile, not only endows the marble tile with the function of degrading formaldehyde, but also realizes the durability of the function while not influencing the original performance of the marble tile.
In order to achieve the purpose, the technical scheme adopted by the invention is as follows: a preparation method of a durable formaldehyde-degrading marble tile comprises the following steps:
(1) the surface of the marble ceramic tile presents a concave-convex structure;
(2) uniformly coating a layer of wax water on the concave-convex structure on the surface of the marble tile to form a cured coating;
(3) the photocatalyst particles are injected into the cured coating by using waxing equipment, so that the photocatalyst particles are embedded in the cured coating and are locked on the marble tile along with the hardening of the cured coating;
(4) uniformly spraying a photocatalyst with visible light activity on the marble tile by adopting high-pressure spraying equipment;
(5) and (4) accelerating the curing of the cured coating treated in the step (4) by adopting a heating curing process.
Preferably, in the step (1), the concave-convex structure is a micro concave-convex structure.
More preferably, the roughness Ra of the relief structure is 0.05 to 2 μm.
The above roughness can improve the binding property and wear resistance of the wax water cured layer to the tile. Both can improve the associativity and the wearability of wax water solidified layer and ceramic tile on the one hand, on the other hand can guarantee again that the antifouling up to standard of ceramic tile reaches ceramic tile surface decorative effect is not influenced.
Preferably, in the step (1), the concave-convex structure is realized by screen printing and anti-slip treatment.
Preferably, in the step (2), the wax water is slow-curing wax water. Not all the wax water can achieve the effect of the invention; first, need can solidify, and the second, wax water curing speed is moderate, can not too fast, also not solidifying, and the heating can be with higher speed the solidification, and the third, the coating transparency is high after the solidification, does not influence the ceramic tile surface and feels thoroughly, and the fourth can promote ceramic tile antifouling property, does not influence ceramic tile surface hardness. The slow curing wax can be completely cured within 1-3 days under normal conditions, and if the wax is subjected to heating treatment, the wax can be well cured within about 1 minute, namely the wax is heated to accelerate the curing.
Preferably, in the step (2), the wax water comprises the following components in parts by weight: 80-85 parts of organic silicon resin, 1-3 parts of curing agent, 5-10 parts of solvent and 5-10 parts of auxiliary agent. The wax water with the formula has the following excellent properties: 1. the antifouling performance after curing can reach 5 grades; 2. the surface effect of the ceramic tile is not influenced after curing; 3. the ceramic tile prepared by the method has good wear resistance, the glossiness of the surface of the ceramic tile prepared by the traditional wax water is reduced by about 30 degrees after the traditional wax water and the wax water are scrubbed by a dry rag, and the glossiness of the ceramic tile prepared by the method is reduced by 2-5 degrees.
More preferably, the solvent is D40 mineral spirits or absolute ethanol.
Preferably, in the step (4), the process parameters of the high-pressure injection equipment are as follows: surface temperature of the tile: 45-60 ℃; injection speed: 50-70 g/min; injection pressure: 0.4-0.5 Mpa; number of nozzles: 1-3; nozzle caliber: 0.5-1.0 mm.
The selection of the process is the optimization of process parameters under the comprehensive consideration of the efficiency of degrading formaldehyde, the performance durability and the production cost; the surface temperature of the ceramic tile is for the rapid volatilization of the water of the sprayed photocatalyst, and the photocatalyst particles are better combined with a wax water layer to ensure the durability. The spraying speed and the spraying pressure are used for ensuring that the dosage of the photocatalyst is the lowest under the condition of formaldehyde degradation efficiency; meanwhile, the firm combination of the photocatalyst particles and the surface of the ceramic tile is improved, and the durability is ensured. The number of the nozzles is to ensure that the surface of the tile can be sprayed completely, and the formaldehyde degradation efficiency is ensured. The caliber of the nozzle is fine enough for atomizing the sprayed photocatalyst, so that the using amount of the photocatalyst can be reduced, and the formaldehyde degradation efficiency can be ensured.
Preferably, in the step (5), the temperature for heating and curing is 200-400 ℃, and the time for heating and curing is 1-5 min. The inventor finds that the selection of the curing temperature and time can completely cure the wax water cured layer, ensure the durability and meet the off-line requirements.
Meanwhile, the invention also provides the durable degraded formaldehyde marble tile prepared by the preparation method.
Compared with the prior art, the invention has the beneficial effects that:
1. the invention has simple process, does not need to change the prior production equipment, and only needs to add a set of high-pressure injection equipment and a high-temperature oven on the prior production line;
2. the photocatalyst particles are combined with the ceramic tile in an embedded mode and an embedded mode by using the slow-curing wax water, and after the curing wax water is cured, the photocatalyst particles are firmly locked on the ceramic tile;
3. the invention realizes that the photocatalyst particles are combined with the ceramic tile in an embedded mode and an embedded mode, even if the embedded photocatalyst on the surface layer is worn and consumed in the using process, the embedded photocatalyst particles can be supplemented in a two-to-three mode, and the durability of the formaldehyde degrading function is realized; moreover, by means of the concave-convex physical structure of the ceramic tile, photocatalyst particles are not easy to wear, and the durability of the ceramic tile is further improved.
Drawings
FIG. 1 is a process route for preparing a durable formaldehyde-degrading marble tile of the present invention;
figure 2 is a graph of the decay of tile properties made by different processes.
Detailed Description
To better illustrate the objects, aspects and advantages of the present invention, the present invention will be further described with reference to the accompanying drawings and specific embodiments.
Example 1
In an embodiment of the durable formaldehyde-degraded marble tile of the present invention, the durable formaldehyde-degraded marble tile is prepared by the following method, and the specific preparation flow chart is as shown in fig. 1:
(1) the surface of the marble tile is made to present a microscopic concavo-convex structure, and the roughness Ra of the concavo-convex structure is 0.05 μm. The product can be obtained by the original process of the production line, such as silk-screen printing, anti-skid treatment and the like;
(2) the method adopts slow-curing wax water to uniformly treat a layer of curing coating on the concave-convex structure on the surface of the marble tile, the curing coating has very good wettability with the surface of the tile, the cured coating has excellent antifouling property, and in addition, the curing coating can accelerate curing under the heating condition. Meanwhile, the cured coating has excellent permeability and cannot influence the surface decoration effect of the marble ceramic tile; the wax water comprises the following components in parts by weight: 80 parts of organic silicon resin, 1 part of curing agent, 5 parts of solvent (D40 solvent oil) and 5 parts of auxiliary agent.
(3) And (3) pumping photocatalyst particles into the cured coating by using waxing equipment, so that the photocatalyst functional particles are embedded in the cured coating and are firmly locked on the marble tile along with the hardening of the cured coating.
(4) Uniformly spraying the photocatalyst with visible light activity on the marble tile by adopting high-pressure spraying equipment, wherein the high-pressure spraying equipment can forcefully impact photocatalyst particles on the cured coating so as to embed the photocatalyst particles into the cured coating; the technological parameters of the high-pressure injection equipment are as follows: surface temperature of the tile: 45 ℃; injection speed: 50 g/min; injection pressure: 0.4 Mpa; number of nozzles: 3; nozzle caliber: 0.5.
(5) and (3) accelerating the curing of the cured coating by adopting a heating curing process, wherein the heating curing temperature is 200 ℃, and the heating curing time is 5 min. The photocatalyst particles are embedded in the curing coating or embedded and combined on the curing coating, the curing coating is not hardened, the curing coating is completely hardened by heating and curing in the working section, so that all the photocatalyst particles are firmly locked on the surface of the marble tile, and finally the marble tile can be delivered from a factory after being sorted and packed.
Example 2
In an embodiment of the durable formaldehyde-degraded marble tile of the present invention, the durable formaldehyde-degraded marble tile is prepared by the following method, and the specific preparation flow chart is as shown in fig. 1:
(1) the surface of the marble tile is made to present a microscopic concavo-convex structure, the roughness Ra of which is 2 μm. The product can be obtained by the original process of the production line, such as silk-screen printing, anti-skid treatment and the like;
(2) the method adopts slow-curing wax water to uniformly treat a layer of curing coating on the concave-convex structure on the surface of the marble tile, the curing coating has very good wettability with the surface of the tile, the cured coating has excellent antifouling property, and in addition, the curing coating can accelerate curing under the heating condition. Meanwhile, the cured coating has excellent permeability and cannot influence the surface decoration effect of the marble ceramic tile; the wax water comprises the following components in parts by weight: 85 parts of organic silicon resin, 3 parts of curing agent, 10 parts of solvent (absolute ethyl alcohol) and 10 parts of auxiliary agent.
(3) And (3) pumping photocatalyst particles into the cured coating by using waxing equipment, so that the photocatalyst functional particles are embedded in the cured coating and are firmly locked on the marble tile along with the hardening of the cured coating.
(4) Uniformly spraying the photocatalyst with visible light activity on the marble tile by adopting high-pressure spraying equipment, wherein the high-pressure spraying equipment can forcefully impact photocatalyst particles on the cured coating so as to embed the photocatalyst particles into the cured coating; the technological parameters of the high-pressure injection equipment are as follows: surface temperature of the tile: 60 ℃; injection speed: 70 g/min; injection pressure: 0.5 Mpa; number of nozzles: 1; nozzle caliber: 1.0 mm.
(5) And (3) accelerating the curing of the cured coating by adopting a heating curing process, wherein the heating curing temperature is 400 ℃, and the heating curing time is 1 min. The photocatalyst particles are embedded in the curing coating or embedded and combined on the curing coating, the curing coating is not hardened, the curing coating is completely hardened by heating and curing in the working section, so that all the photocatalyst particles are firmly locked on the surface of the marble tile, and finally the marble tile can be delivered from a factory after being sorted and packed.
Example 3
In an embodiment of the durable formaldehyde-degraded marble tile of the present invention, the durable formaldehyde-degraded marble tile is prepared by the following method, and the specific preparation flow chart is as shown in fig. 1:
(1) the surface of the marble tile is made to present a microscopic concavo-convex structure, the roughness Ra of which is 1 μm. The product can be obtained by the original process of the production line, such as silk-screen printing, anti-skid treatment and the like;
(2) the method adopts slow-curing wax water to uniformly treat a layer of curing coating on the concave-convex structure on the surface of the marble tile, the curing coating has very good wettability with the surface of the tile, the cured coating has excellent antifouling property, and in addition, the curing coating can accelerate curing under the heating condition. Meanwhile, the cured coating has excellent permeability and cannot influence the surface decoration effect of the marble ceramic tile; the wax water comprises the following components in parts by weight: 82 parts of organic silicon resin, 1 part of curing agent, 6 parts of solvent (D40 solvent oil or absolute ethyl alcohol) and 7 parts of auxiliary agent.
(3) And (3) pumping photocatalyst particles into the cured coating by using waxing equipment, so that the photocatalyst functional particles are embedded in the cured coating and are firmly locked on the marble tile along with the hardening of the cured coating.
(4) Uniformly spraying the photocatalyst with visible light activity on the marble tile by adopting high-pressure spraying equipment, wherein the high-pressure spraying equipment can forcefully impact photocatalyst particles on the cured coating so as to embed the photocatalyst particles into the cured coating; the technological parameters of the high-pressure injection equipment are as follows: surface temperature of the tile: 46 ℃; injection speed: 60 g/min; injection pressure: 0.45 Mpa; number of nozzles: 2; nozzle caliber: 0.7 mm.
(5) And (3) accelerating the curing of the cured coating by adopting a heating curing process, wherein the heating curing temperature is 300 ℃, and the heating curing time is 4 min. The photocatalyst particles are embedded in the curing coating or embedded and combined on the curing coating, the curing coating is not hardened, the curing coating is completely hardened by heating and curing in the working section, so that all the photocatalyst particles are firmly locked on the surface of the marble tile, and finally the marble tile can be delivered from a factory after being sorted and packed.
Compared with the prior art, the durable formaldehyde-degrading marble tile and the preparation method thereof have the following advantages:
1. the invention has simple process, does not need to change the prior production equipment, and only needs to add a set of high-pressure injection equipment and a roller oven on the prior production line;
2. the photocatalyst particles are combined with the ceramic tile in an embedded mode and an embedded mode by using the slow-curing wax water, and after the curing wax water is cured, the photocatalyst particles are firmly locked on the ceramic tile;
3. the invention realizes that the photocatalyst particles are combined with the ceramic tile in an embedded mode and an embedded mode, even if the embedded photocatalyst on the surface layer is worn and consumed in the using process, the embedded photocatalyst particles can be supplemented in a two-to-three mode, and the durability of the formaldehyde degrading function is realized; moreover, by means of the concave-convex physical structure of the ceramic tile, photocatalyst particles are not easy to wear, and the durability of the ceramic tile is further improved.
Fig. 2 is a graph showing the performance attenuation curve of the formaldehyde-degrading marble tile prepared by different processes after being scrubbed by a dry towel for several times, and it can be seen from fig. 2 that the formaldehyde-degrading marble tile prepared by other coating processes has no durability basically, and the dry towel is not scrubbed, but the formaldehyde-degrading marble tile of the present invention has about 60% of the formaldehyde-degrading performance after being scrubbed for 10000 times, and the decay rate in the later period is basically unchanged, so the durability is excellent.
Finally, it should be noted that the above embodiments are only used for illustrating the technical solutions of the present invention and not for limiting the protection scope of the present invention, and although the present invention is described in detail with reference to the preferred embodiments, it should be understood by those skilled in the art that modifications or equivalent substitutions can be made on the technical solutions of the present invention without departing from the spirit and scope of the technical solutions of the present invention.
Claims (7)
1. A preparation method of a durable formaldehyde-degrading marble tile is characterized by comprising the following steps:
(1) the surface of the marble ceramic tile presents a concave-convex structure;
(2) uniformly coating a layer of wax water on the concave-convex structure on the surface of the marble tile to form a cured coating;
(3) the photocatalyst particles are injected into the cured coating by using waxing equipment, so that the photocatalyst particles are embedded in the cured coating and are locked on the marble tile along with the hardening of the cured coating;
(4) uniformly spraying a photocatalyst with visible light activity on the marble tile by adopting high-pressure spraying equipment;
(5) accelerating the curing of the cured coating treated in the step (4) by adopting a heating curing process;
the roughness Ra of the concave-convex structure is 0.05-2 mu m;
in the step (2), the wax water comprises the following components in parts by weight: 80-85 parts of organic silicon resin, 1-3 parts of curing agent, 5-10 parts of solvent and 5-10 parts of auxiliary agent.
2. The method for preparing a durable formaldehyde-degrading marble tile according to claim 1, wherein in the step (1), the concavo-convex structure is a micro concavo-convex structure.
3. The method for preparing a durable formaldehyde-degrading marble tile according to claim 1, wherein in the step (1), the concavo-convex structure is realized by screen printing and anti-slip treatment.
4. The method for preparing durable formaldehyde-degrading marble tiles according to claim 1, wherein said solvent is D40 solvent oil or absolute ethanol.
5. The method for preparing a durable formaldehyde-degrading marble tile according to claim 1, wherein in the step (4), the process parameters of the high-pressure spraying equipment are as follows: surface temperature of the tile: 45-60 ℃; injection speed: 50-70 g/min; injection pressure: 0.4-0.5 Mpa; number of nozzles: 1-3; nozzle caliber: 0.5-1.0 mm.
6. The method for preparing a durable formaldehyde-degrading marble tile according to claim 1, wherein in the step (5), the temperature for the heat curing is 200-400 ℃, and the time for the heat curing is 1-5 min.
7. A durable degraded formaldehyde marble tile prepared by the preparation method of any one of claims 1 to 6.
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| JP2001058889A (en) * | 1998-08-21 | 2001-03-06 | Toto Ltd | Tile and its production |
| JP3709719B2 (en) * | 1998-09-02 | 2005-10-26 | 東陶機器株式会社 | Manufacturing method for ceramic building materials |
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