CN113480174A - Semi-bright dry granular glaze with fine texture and application of semi-bright dry granular glaze in ceramic plate - Google Patents
Semi-bright dry granular glaze with fine texture and application of semi-bright dry granular glaze in ceramic plate Download PDFInfo
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- CN113480174A CN113480174A CN202110851214.XA CN202110851214A CN113480174A CN 113480174 A CN113480174 A CN 113480174A CN 202110851214 A CN202110851214 A CN 202110851214A CN 113480174 A CN113480174 A CN 113480174A
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- C—CHEMISTRY; METALLURGY
- C03—GLASS; MINERAL OR SLAG WOOL
- C03C—CHEMICAL COMPOSITION OF GLASSES, GLAZES OR VITREOUS ENAMELS; SURFACE TREATMENT OF GLASS; SURFACE TREATMENT OF FIBRES OR FILAMENTS MADE FROM GLASS, MINERALS OR SLAGS; JOINING GLASS TO GLASS OR OTHER MATERIALS
- C03C8/00—Enamels; Glazes; Fusion seal compositions being frit compositions having non-frit additions
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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
Abstract
The invention discloses a semi-bright dry granular glaze with fine texture and application thereof in a ceramic plate. The chemical composition of the semi-bright fine texture dry granular glaze comprises the following components: by mass percent, SiO2：40‑60%；Al2O3: 15 to 25 percent; alkaline earth metal oxide: 9 to 20 percent; alkali metal oxides: 2 to 5 percent; ZnO: 3 to 5 percent. The semi-bright fine texture dry glaze particles are partially filled and wrapped by glass powder and glaze throwing with a low initial melting temperature, and are partially reacted and fused with the dry particles to form a fine texture glaze surface.
Description
Technical Field
The invention belongs to the field of ceramic building materials, and particularly relates to semi-bright fine-texture dry granular glaze and application thereof in a ceramic plate.
Background
The application market of the current architectural ceramics is wider and wider, and simultaneously, the ceramic decoration technology has increasingly rigorous requirements. The cross fusion of other materials enriches the ceramic decoration, makes the ceramic decoration effect richer and more various, and is one of the important wind vanes of modern ceramic glaze decoration.
Disclosure of Invention
The invention provides a semi-bright dry granular glaze with fine texture and application thereof in a ceramic plate. The semi-bright fine texture dry glaze particles are partially filled and wrapped by glass powder and glaze polishing with a low initial melting temperature, and are partially reacted and fused with the dry particles to form a fine texture glaze surface. The local part can also make the glass phase of the glass powder react with metal electro-optic water to form magic color.
In a first aspect, the invention provides a semi-bright dry glaze with fine texture. The chemical composition of the semi-bright fine texture dry granular glaze comprises the following components: by mass percent, SiO2：40-60％；Al2O3: 15 to 25 percent; alkaline earth metal oxide: 9 to 20 percent; alkali metal oxides: 2 to 5 percent; ZnO: 3 to 5 percent.
Preferably, the chemical composition of the semi-bright fine texture dry granular glaze comprises: by mass percent, IL: 0.5-1.5%; SiO 22：40-60％；Al2O3：15-25％；CaO：4-6％；MgO：1-3％；K2O：1-3％；Na2O：1-2％；ZnO：3-5％；BaO：3-8％；SrO：1-3％。
Preferably, the molar ratio of silicon to aluminum of the semi-bright fine texture dry grain glaze is kept between 2.5 and 4.0, and is preferably 3.0 to 4.0.
Preferably, the raw material composition of the semi-bright fine texture dry granular glaze comprises: the glass powder comprises, by mass, 90-100 parts of dry particles, 1-5 parts of bright polished glaze and 3-5 parts of glass powder.
Preferably, the chemical composition of the dry pellets comprises: by mass percent, IL: 0.3 to 0.5 percent; SiO 22：54-58％；Al2O3：16-20％；CaO：15-18％；MgO：0.3-0.5％；K2O：2.0-3.0％；Na2O：3.0-4.0％；ZnO 4-5％；BaO：0.2-0.3％；SrO：0.5-0.8％。
Preferably, the chemical composition of the bright polished glaze comprises: by mass percent, IL: 1.0 to 1.5 percent; SiO 22：55-65％；Al2O3：15-18％；CaO：10-15％；MgO：3.0-4.5％；K2O：2.0-3.0％；Na2O：2.0-3.0％；ZnO：3-4％；BaO：5.0-7.0％；TiO2：0.2-0.5％；Fe2O3：0.1-0.2％；P2O5：0.2-0.4％。
Preferably, the initial melting temperature of the dry particles is 1115-1135 ℃; the initial melting temperature of the bright polished glaze is lower than that of dry granules, and preferably lower than that of the dry granules by 10-20 ℃.
Preferably, the chemical composition of the glass powder comprises: by mass percent, IL: 5.0 to 7.0 percent; SiO 22：50-55％；Al2O3：12-15％；CaO：10-12％；MgO：6.0-8.0％；K2O：1.0-1.5％；Na2O：4.0-5.0％；ZnO：1-2％；TiO2：0.1-0.2％；Fe2O3：0.2-0.3％；P2O5：0.05-0.1％。
Preferably, the glossiness of the semi-bright fine texture dry granular glaze is 15-25 degrees.
In a second aspect, the invention provides the application of the semi-bright fine texture dry-particle glaze in the ceramic plate. The application comprises the following steps: applying base coat on the surface of the blank; printing a pattern on the surface of the blank body after the ground coat is applied by ink jet; screen-printing semi-bright fine texture dry granular glaze on the surface of the blank after the pattern is printed by ink jet; and firing.
Preferably, the specific gravity of the semi-bright fine texture dry granular glaze is 1.37-1.40g/cm3The glazing amount is 80-100g/m2。
Preferably, the application further comprises: applying metal electro-optic water on the top of the kiln which is sintered and cooled to the temperature of 750-; the application amount of the metal electro-optical water is 50-60g/m2。
Detailed Description
The present invention is further illustrated by the following examples, which are to be understood as merely illustrative of, and not restrictive on, the present invention. Unless otherwise specified, each percentage means a mass percentage.
The present disclosure provides a semi-bright, fine-textured dry glaze. The glossiness of the semi-bright light is between 15 and 25 degrees.
The chemical composition of the semi-bright fine texture dry granular glaze comprises the following components: by mass percent, SiO2：40-60％；Al2O3: 15 to 25 percent; alkaline earth metal oxide: 9 to 20 percent; alkali metal oxides: 2 to 5 percent; ZnO: 3 to 5 percent. The semi-bright fineness is improved by the aid of alkaline earth metal oxide of (calcium-magnesium-barium composite flux) and proper (potassium-sodium) alkali metal oxide.
In some embodiments, the chemical composition of the semi-bright fine texture dry granular glaze comprises: by mass percent, IL: 0.5-1.5%; SiO 22：40-60％；Al2O3：15-25％；CaO：4-6％；MgO：1-3％；K2O：1-3％；Na2O: 1 to 2 percent; ZnO: 3 to 5 percent; BaO: 3 to 8 percent; SrO: 1 to 3 percent. The introduction of the strontium oxide is beneficial to the discharge of gas in the glaze firing process, and the strontium oxide can properly reduce the melting temperature of the glaze, improve the glaze luster, expand the firing range, promote the chemical reaction with wax-like fine texture glaze polishing and the like, and improve the adaptability of the blank glaze.
The molar ratio of silicon to aluminum of the semi-bright fine texture dry granular glaze is kept between 2.5 and 4.0 (preferably between 3.0 and 4.0). Too low a silica to alumina molar ratio is detrimental to the formation of a semi-bright effect. The silicon-aluminum molar ratio of the waxy fine texture polished glaze and the semi-bright fine texture dry grain glaze is controlled, the stereoscopic brick surface effect is favorably formed, the proper deviation of the melting temperature between the waxy fine texture polished glaze and the semi-bright fine texture dry grain glaze is controlled, and the fusion wrapping between the waxy fine texture polished glaze and the semi-bright fine texture dry grain glaze is facilitated.
The semi-bright fine texture dry granular glaze comprises the following raw materials: the glass powder comprises, by mass, 90-100 parts of dry particles, 1-5 parts of bright polished glaze and 3-5 parts of glass powder. A small amount of glaze polishing and glass powder can not completely wrap the matte fine dry particles, but the glossy glaze polishing and the low-temperature glass powder form a semi-wrapping, and the matte fine dry particles and the semi-wrapping are fused and permeated, namely the glossy glaze polishing wraps the dry particles and partially reacts with the dry particles to be fused to form a texture fine glaze. If the content of the bright glaze and the glass powder is too high in percentage by mass, the dry particles are completely wrapped and cannot reach half wrapping. If the mass percentage content of the bright polished glaze is too high, the glossiness of the glaze surface is higher, and the stereoscopic impression is poor, so that the fine hand feeling, the proper stereoscopic impression and the glossiness cannot be presented. By controlling the mass percent of the glass powder in the range, the semi-bright fine texture dry grain glaze can be fully wrapped and the glass phase components in the semi-bright fine texture dry grain glaze can be increased. Especially, when the glass powder exceeds the range, the glass phase component of the dry grain glaze is increased, the glaze surface is leveled, the glossiness is higher, and the stereoscopic impression is poor.
The chemical composition of the dry granules comprises: by mass percent, IL: 0.3 to 0.5 percent; SiO 22：54-58％；Al2O3：16-20％；CaO：15-18％；MgO：0.3-0.5％；K2O：2.0-3.0％；Na2O：3.0-4.0％；ZnO 4-5％；BaO：0.2-0.3％；SrO：0.5 to 0.8 percent. Strontium oxide, calcium oxide and barium oxide can play a fluxing role. The calcium and barium are used as the composite flux of the matt glaze, and are favorable for forming a fine and smooth matt texture glaze surface through proper proportion. The dried granules have excellent stereoscopic impression and glossiness of 10-15 degrees.
The mesh number of the dry granules is between 80 and 120 meshes. The coarse dry particles may cause that the bright polished glaze and the glass powder have lower melting points than the dry particles in the firing process, so that the bright polished glaze is melted and filled into gaps of the dry particles in the firing process, the polished glaze and the glass powder cannot be completely leveled, a large amount of concave-convex shapes are formed, and the flatness effect of the glaze surface is deviated. The fine dry particles lead to high bulk density of the dry particles, and the glaze surface has no stereoscopic impression due to glaze polishing and glass powder leveling. The glass powder and the bright polished glaze are added in a small proportion, so that the local filling effect is realized on dry particles with proper particle size, and the dry particles are exposed to form a brick surface effect with good stereoscopic impression.
The initial melting temperature of the dry particles is 1115-1135 ℃. The proper melting temperature of the dry particles is beneficial to forming a glaze surface with good three-dimensional effect. The glossiness of the brick surface is controlled between 15 and 25 degrees by proper low-temperature glaze polishing and partial wrapping of the glass powder with dry particles, and is relatively close to the natural and comfortable glossiness range.
The chemical composition of the bright polished glaze comprises: by mass percent, IL: 1.0 to 1.5 percent; SiO 22：55-65％；Al2O3：15-18％；CaO：10-15％；MgO：3.0-4.5％；K2O：2.0-3.0％；Na2O：2.0-3.0％；ZnO：3-4％；BaO：5.0-7.0％；TiO2：0.2-0.5％；Fe2O3：0.1-0.2％；P2O5: 0.2 to 0.4 percent. The initial melting temperature of the bright polished glaze is lower than that of dry granules, and preferably lower than that of the dry granules by 10-20 ℃. The purpose of the arrangement is that the gaps between the dry particles are filled with liquid phase substances in the bright glaze polishing and glass powder melting processes, and the liquid phase substances are not completely filled due to the low proportion of the glaze polishing and the glass powder and only partially fused with the dry particles in a semi-melting state, so that the dry particles are exposed on the surface in a semi-naked mode to form a brick surface effect with strong stereoscopic impression. And the bright glaze polishing melting wraps the dry particles and reacts with the dry particles to form a whole, so that the dry particle glaze and the glaze polishing have stronger adaptability.
The glass powder has the function of wrapping and fusing the dry granular glaze and increasing the formation of a glass phase. The glass powder can also react with metal electro-optic water applied subsequently to form magic color. In some embodiments, the chemical composition of the glass frit comprises: by mass percent, IL: 5.0 to 7.0 percent; SiO 22：50-55％；Al2O3：12-15％；CaO：10-12％；MgO：6.0-8.0％；K2O：1.0-1.5％；Na2O：4.0-5.0％；ZnO：1-2％；TiO2：0.1-0.2％；Fe2O3：0.2-0.3％；P2O5: 0.05-0.1 percent. In the invention, the glass powder and the dry particles are matched for use to wrap the surfaces of the dry particles, which is different from adding the glass powder into the raw glaze, and partial fusion is formed in the high-temperature firing process. The liquid phase substance in the glaze throwing and glass powder melting process fills gaps between the dry particles, and the liquid phase substance is not completely filled due to the low proportion of the glaze throwing and the glass powder, but is partially fused with the dry particles in a semi-molten state, so that the dry particles are exposed on the dry particles in a semi-naked manner to form a brick surface effect with strong stereoscopic impression.
The invention is different from the composite glaze of transparent frit, matte fine frit and raw material, the invention uses glass powder and glaze throwing with lower initial melting temperature to partially fill and wrap matte fine texture dry grains, and the dry grain glaze is flatly distributed on the surface of the brick by using the screen printing process. The dry granular glaze with high initial melting temperature and fine texture and the polishing glaze with fine waxy texture are crossed and fused to form fine waxy effect.
The special semi-bright fine texture dry glaze particles are subjected to glaze polishing and are wrapped by glass powder in the firing process. The purpose of the coating is to enable the glass phase of the glass powder to better react with the subsequent metal electro-optic water to form the magic color. The glossiness of the semi-bright fine texture dry granular glaze is preferably 15-25 degrees.
The mesh number of the silk screen for silk screen printing of the semi-bright and fine texture dry granular glaze is 80-120 meshes. The semi-bright dry glaze with fine texture can be printed on the surface of the ceramic plate in a screen printing mode, and after being fired, the dry glaze is distributed on the surface of the ceramic plate in a dotted manner, has good stereoscopic impression of rising and falling, and ensures the flatness of the surface of the brick. The reason is that the glossiness of the dry grains is low, and the printed semi-glossy exquisite texture dry grain glaze can form an undulated effect on the surface of the brick under the condition that the dry grains are wrapped by a proper amount of glossy glaze or semi-wrapped, and can better form low-gloss oil-wet feeling after being fired.
The fineness of the semi-bright fine texture dry granular glaze is required to be 0.5-0.8 wt% of 80-mesh screen residue, and the flow rate is 35-38 seconds. The flow rate was measured in the following manner: the Engler viscometer has an outflow pore size of 4.75mm and a capacity of 200 mL. In some embodiments, the semi-bright fine texture dry granular glaze has a specific gravity of 1.37-1.40g/cm3The glazing amount is 80-100g/m2。
The following is an exemplary description of the application of the semi-bright fine texture dry-particle glaze in the ceramic plate.
And (3) forming by using the blank powder to prepare a blank (also called a stone-like blank). The chemical composition of the green body powder is not limited, and the green body powder commonly used in the field can be adopted. In some embodiments, the chemical composition of the green body powder comprises: by mass percent, IL: 4.0 to 5.5 percent; SiO 22：65-68％；Al2O3：22-25％；Fe2O3：0.2-0.5％；TiO2：0.05-0.3％；CaO：0.3-0.5％；MgO：1.5-2.5％；K2O：1.6-2.1％；Na2O：0.5-0.8％。
The raw material composition of the green body powder material can comprise: 8-10% of Qingqing potash sand, 8-11% of sodalite powder, 9-11% of terrazzo powder, 7-8% of Lihong potash sand, 8-10% of Nanfeng sand, 28-30% of Bongsha, 20-21% of ball clay, 7-9% of Dongji mud and 2-3% of black talc in percentage by mass.
The green body can be prepared by dry press molding. Preferably, the green body is polished by a polishing machine before glazing, is dried in a drying kiln, is taken out of the drying kiln and is swept. This is a routine operation in the art and is not the point of the invention.
And applying a base coat on the surface of the blank to cover the blank base coat and the defects, so that the color development of the ink-jet pattern is facilitated. The zirconium white base coat commonly used in the field can be used. The chemical composition of the ground glaze can comprise: by mass percent, SiO2：55-63％；Al2O3: 15 to 23 percent; alkaline earth metal oxide: 1.0-2.0%; alkali metal oxides: 2.0 to 3.0 percent; ZrO (ZrO)2: 12 to 15 percent. In some embodiments, the chemical composition of the ground glaze comprises: by mass percent, IL: 2.5 to 3.5 percent; SiO 22：55-63％；Al2O3：15-23％；Fe2O3：0.3-0.5％；TiO2：0.05-0.3％；CaO：0.5-0.8％；MgO：0.7-1.2％；K2O：0.8-1.2％；Na2O：1.5-1.8％；ZrO2：12-15％。
The ground glaze comprises the following raw materials: 30-35% of potassium feldspar, 10-12% of albite, 12-15% of nepheline, 20-25% of quartz, 0.5-1.0% of wollastonite, 0.8-1.2% of calcined talc, 8-10% of kaolin, 3-4% of calcined clay, 2-3% of superfine alumina and 12-15% of zirconium silicate by mass percentage. Adding water into each raw material of the ground glaze, ball-milling uniformly, and optionally adding an auxiliary agent to prepare the glaze slip. The requirement of the ground coat on the fineness is that the screen residue of a 200-mesh screen is 0.5-0.8 wt%.
The glazing mode of the ground coat is glaze spraying. In some embodiments, the ground coat has a specific gravity of 1.40 to 1.42g/cm3The glazing amount is 240-2。
And (4) carrying out ink-jet printing on the surface of the blank body after the ground coat is applied. The color and layout of the ink-jet printed pattern are adapted according to the ceramic plate design.
And (3) screen-printing semi-bright fine texture dry granular glaze on the surface of the blank after the pattern is printed by ink jet.
And drying the blank body after the screen printing of the semi-bright and fine texture dry granular glaze. The drying temperature can be 120-150 ℃, and the moisture of the dried blank is controlled within 0.8 wt%.
And (5) firing in a kiln. The maximum firing temperature is 1215-1225 ℃, and the firing period is 65-75 minutes.
In some preferred technical schemes, the metal electro-optic water is applied to the top of the kiln which is sintered and cooled to the temperature of 750-800 ℃. The thickness of the metal electro-optic water film layer is controlled by adjusting the moving speed of the spray gun and the water spraying quantity. In some embodiments, the amount of metallic electro-optic water applied is from 50 to 60g/m2. The metal electro-optical water is combined with the surface of the ceramic plate under the high temperature condition to form the magic color metal effect.
And (6) edging and packaging.
Before screen printing of the semi-bright fine texture dry granular glaze, wax fine texture glaze polishing (also called wax glaze polishing) can be applied to the surface of the blank after pattern ink jet printing to form the ceramic plate with fantastic color, fine and natural skin texture. The wax fine texture polished glaze has good color development and transparency, and low glossiness after firing, thereby meeting the dual requirements of touch and vision. The ceramic plate with the colorful, fine and natural skin texture has the natural surface glossiness of 15-25 degrees, the surface texture is close to the natural texture and is fine and smooth, and the ceramic plate has the colorful effect under the irradiation of light.
The chemical composition of the waxy polishing with fine texture can comprise: by mass percent, SiO2：45-55％；Al2O3: 15 to 25 percent; alkaline earth metal oxide: 11 to 19 percent; alkali metal oxides: 2 to 6 percent; ZnO: 2 to 4 percent. The wax polishing glaze with fine texture takes alkaline earth metal oxide (of calcium magnesium barium flux) as the main component and takes alkali metal oxide (of potassium sodium flux) as the auxiliary component. The glaze fineness and the wax touch feeling are maintained in a proper range by maintaining the mass percentage content of the alkaline earth metal oxide and the alkali metal oxide in a proper rangeBetter, the reason is that: the glaze belongs to a calcium barium magnesium complex matt glaze; if the content of potassium and sodium is too high, the relative increase of the glass phase of the glaze surface is not beneficial to forming the glaze surface with fine texture and low glossiness, and is also not beneficial to separating out fine and smooth dull anorthite crystals; partial calcium magnesium barium replaces potassium sodium with stronger fluxing capacity, which is beneficial to separating fine and smooth anorthite crystals from the glaze surface. In addition, the molar ratio of silicon to aluminum of the wax-like polishing glaze is preferably controlled to be between 2.0 and 3.0 (preferably between 2.0 and 2.5), and the firing temperature range of the wax-like polishing glaze is wider, so that the glaze surface texture after firing is good.
In some embodiments, the chemical composition of the waxy, fine-textured glaze comprises: by mass percent, IL: 1.5 to 2.5 percent; SiO 22：45-55％；Al2O3：15-25％；Fe2O3：0.1-0.2％；CaO：5-8％；MgO：1-3％；K2O：1-3％；Na2O：1-3％；BaO：5-8％；ZnO：2-4％。
The waxy fine texture glaze polishing comprises the following raw materials: by mass percentage, 25-30% of potassium feldspar, 25-30% of albite, 8-12% of kaolin, 5-8% of calcite, 5-8% of dolomite, 6-8% of barium carbonate, 2-4% of zinc oxide, 3-4% of quartz, 5-8% of burnt soil and 2-4% of corundum. The potassium feldspar and the albite are combined, and a proper amount of calcined clay and corundum are introduced to improve the sintering temperature and widen the sintering temperature range.
The melting starting temperature of the wax exquisite texture polishing is 1105-1110 ℃. The melting start temperature of the common bright polishing glaze is usually 1000-1100 ℃. The polishing with the fine waxy texture and the high initial melting temperature and the wide firing temperature is beneficial to the fusion and reaction fusion of burrs on the surface of the glaze surface to form the glaze with the fine waxy texture, and the glaze surface has better flatness.
The glossiness of the waxy exquisite texture polished glaze is 12-15 degrees. Too low gloss can make the glaze feel rough and not fine to the touch, and can also cause the surface pattern to lose fidelity and be blurred due to the matte effect. If the glossiness is too high, the wax of the glaze surface is not greasy. Because the light irradiated on the glaze surface is easier to reflect when the surface gloss is too high, the high gloss mirror surface transparency is given to people instead of the wax effect.
Adding water into each raw material of the waxy fine texture polished glaze, ball-milling and mixing, and optionally adding an auxiliary agent to prepare the glaze slip. The fineness requirement of the wax fine texture glaze polishing is that the screen residue of a 120-mesh screen is 0.1-0.3 wt%.
The application mode of the wax fine texture glaze polishing is glaze spraying, which is beneficial to the fineness and the flatness of the glaze surface. The specific gravity of the wax fine texture polished glaze is 1.86-1.88g/cm3The glazing amount is 320-2. The glazing parameters of the wax fine texture glaze polishing are beneficial to reducing bubbles in the glaze slurry, the glaze curtain can be kept smooth during glazing, and meanwhile, the glaze effect of wax fine texture can be ensured. Moreover, the semi-bright fine texture dry glaze can melt wax fine texture glaze polishing and remove surface burrs generated by dry glaze, so that the brick surface is more fine and smooth and is endowed with proper glossiness.
The expansion coefficients of the waxy fine texture polished glaze and the semi-bright fine texture dry granular glaze are close, so that the brick shape is prevented from being arched or tortoise-shaped. Preferably, the difference value of the expansion coefficients of the waxy fine texture polished glaze and the semi-glossy fine texture dry grain glaze is controlled to be 0.2 multiplied by 10-6℃-1-0.3×10-6℃-1In the meantime.
The present invention will be described in detail by way of examples. It is also to be understood that the following examples are illustrative of the present invention and are not to be construed as limiting the scope of the invention, and that certain insubstantial modifications and adaptations of the invention by those skilled in the art may be made in light of the above teachings. The specific process parameters and the like of the following examples are also only one example of suitable ranges, i.e., those skilled in the art can select the appropriate ranges through the description herein, and are not limited to the specific values exemplified below.
Example 1
The preparation method of the ceramic plate using the semi-bright and fine texture dry glaze comprises the following steps:
preparing blank powder according to the requirements of the stone-like blank, and carrying out dry pressing on the blank powder by a press to obtain a blank;
spraying base glaze on the surface of the blank;the specific gravity of the ground coat is 1.40-1.42g/cm3The glazing amount is 240-2；
Printing a design pattern on the surface of the blank after spraying the ground coat in an ink-jet manner;
spraying glaze on a bell jar, and polishing the glaze with fine and smooth texture; the wax fine texture polishing glaze comprises the following chemical components: by mass percent, IL: 1.5 to 2.5 percent; SiO 22：45-55％；Al2O3：15-25％；Fe2O3：0.1-0.2％；CaO：5-8％；MgO：1-3％；K2O：1-3％；Na2O: 1 to 3 percent; BaO: 5 to 8 percent; ZnO: 2 to 4 percent; the specific gravity of the wax fine texture polished glaze is 1.86-1.88g/cm3The glazing amount is 320-2；
Printing semi-bright fine texture dry granular glaze by adopting a 80-mesh net effect pattern net; the flow rate of the semi-bright fine texture dry granular glaze is 35-38 seconds, and the specific gravity is 1.37-1.40g/cm3The glazing amount is 80-100g/m2(ii) a The raw material composition of the semi-bright fine texture dry granular glaze is shown in table 1;
drying the blank body after printing the semi-bright and fine texture dry-particle glaze, wherein the drying temperature is 120-150 ℃, and the moisture of the dried blank body is controlled within 0.8 wt%;
firing in a kiln, wherein the maximum firing temperature is 1225 ℃, and the firing period is 65-75 minutes; a swing arm type automatic spray gun is arranged at the top of the kiln which is sintered and cooled to the temperature of 750-2；
And (6) edging and packaging.
TABLE 1 raw material formulation of semi-bright fine texture dry glaze
| Material(s) | A1 | A2 | A3 | A4 | A5 |
| Dried granules (parts by weight) | 100 | 100 | 100 | 100 | 100 |
| Bright glaze (parts by weight) | 6 | - | 2 | 4 | 3 |
| Glass powder (parts by weight) | - | 6 | 4 | 2 | 3 |
| Glaze glossiness (degree) | 13 | 35 | 23 | 15 | 18 |
| Glazed stereo perception | Good taste | In general | Good taste | Good taste | Good taste |
| Fineness of glaze surface | In general | In general | Good taste | In general | Good taste |
| Magic color effect of glaze | Difference (D) | Good taste | Good taste | In general | Is preferably used |
The gloss tester was manufactured by Coishika photoelectric Instrument Co., Ltd, model No. WGG 60-E4. Stereoscopic impression refers to the effect of accumulation of surface dry particles observed through a magnifying glass. The fineness is the tactile sensation of touching the sample to be measured by hand. The sample with good fineness is silky and smooth. The magic color effect is the magic color visual effect of light irradiation with different intensities, and is mainly used for evaluating the visual effect formed by reflection of light incident on the brick surface and the metal photoelectric water film layer. The smoothness of the glaze surface of A1 is general, mainly because the burr hand feeling of the bright polished glaze which can not be melted completely is not fine enough, and the fantasy color effect is poor because the glaze surface has more burrs. The poor stereoscopic impression of the glaze of A2 is mainly due to the fact that a large amount of low-temperature glass powder is filled in gaps of dry grains, has a large fluxing effect on the dry grains, and almost levels the whole brick surface; the smoothness of the glaze surface is mainly caused by the fact that dry particles completely react and lose delicate touch feeling due to the strong fluxing capacity of the glass powder. The natural surface glossiness of the obtained ceramic plate product with the fantasy color, fine and natural skin texture is 15-25 degrees, the surface texture is close to the natural texture and is fine and smooth, and the ceramic plate product has the fantasy color effect under the irradiation of light.
Example 2
The preparation method of the ceramic plate using the semi-bright and fine texture dry glaze comprises the following steps:
preparing blank powder according to the requirements of the stone-like blank, and carrying out dry pressing on the blank powder by a press to obtain a blank;
spraying base glaze on the surface of the blank; the specific gravity of the ground coat is 1.40-1.42g/cm3The glazing amount is 240-2；
Printing a design pattern on the surface of the blank after spraying the ground coat in an ink-jet manner;
printing semi-bright fine texture dry granular glaze by adopting a 80-mesh net effect pattern net; the flow rate of the semi-bright fine texture dry granular glaze is 35-38 seconds, and the specific gravity is 1.37-1.40g/cm3The glazing amount is 80-100g/m2(ii) a The raw material composition of the semi-bright fine texture dry granular glaze is shown in table 1;
drying the blank body after printing the semi-bright and fine texture dry-particle glaze, wherein the drying temperature is 120-150 ℃, and the moisture of the dried blank body is controlled within 0.8 wt%;
firing in a kiln, wherein the maximum firing temperature is 1225 ℃, and the firing period is 65-75 minutes; a swing arm type automatic spray gun is arranged at the top of the kiln which is sintered and cooled to the temperature of 750-2；
And (6) edging and packaging.
Comparative example 1
Essentially the same as example 2, except that: replacing the semi-bright fine texture dry glaze with the antique dry glaze. The chemical composition of the antique dry particle glaze comprises the following components: by mass percent, IL: 1.0 to 3.5 percent; SiO 22：50-55％；Al2O3：20-25％；Fe2O3：0.1-0.2％；CaO：3-8％；MgO：2.0-3.0％；K2O：1.0-2.0％；Na2O：1.0-2.0％；BaO：7-10％；ZnO：1-2％。
The melting temperature of the antique dry particle glaze is between 1145-1160 ℃, the hand feeling is rough after sintering, the glossiness is very low (between 5-6 ℃), and the illusion-color effect cannot be seen when the glaze is sprayed with the electro-optic water. This is because the glass phase formed by the glaze has little influence on the high temperature bonding with the metal electro-optic water, resulting in a dull glaze.
Claims (10)
1. The semi-bright fine texture dry granular glaze is characterized by comprising the following chemical components: by mass percent, SiO2：40-60%；Al2O3: 15 to 25 percent; alkaline earth metal oxide: 9 to 20 percent; alkali metal oxides: 2 to 5 percent; ZnO: 3 to 5 percent.
2. The semi-bright fine texture dry glaze of claim 1, wherein the chemical composition of the semi-bright fine texture dry glaze comprises: by mass percent, IL: 0.5-1.5%; SiO 22：40-60%；Al2O3：15-25%；CaO：4-6%；MgO：1-3%；K2O：1-3%；Na2O：1-2%；ZnO：3-5%；BaO：3-8%；SrO：1-3%。
3. The semi-glossy dry glaze particles as claimed in claim 1 or 2, wherein the molar ratio of Si to Al of the semi-glossy dry glaze particles is maintained at 2.5-4.0, preferably 3.0-4.0.
4. The semi-bright fine texture dry-particle glaze according to any one of claims 1 to 3, wherein the semi-bright fine texture dry-particle glaze comprises the following raw materials: the glass powder comprises, by mass, 90-100 parts of dry particles, 1-5 parts of bright polished glaze and 3-5 parts of glass powder.
5. The semi-bright fine-texture dry-particle glaze of claim 4, wherein the chemical composition of the dry particles comprises: by mass percent, IL: 0.3 to 0.5 percent; SiO 22：54-58%；Al2O3：16-20%；CaO：15-18%；MgO：0.3-0.5%；K2O：2.0-3.0%；Na2O：3.0-4.0%；ZnO 4-5%；BaO：0.2-0.3%；SrO：0.5-0.8%。
6. The semi-bright fine-texture dry-particle glaze according to claim 4 or 5, wherein the chemical composition of the bright polished glaze comprises: by mass percent, IL: 1.0 to 1.5 percent; SiO 22：55-65%；Al2O3：15-18%；CaO：10-15%；MgO：3.0-4.5%；K2O：2.0-3.0%；Na2O：2.0-3.0%；ZnO：3-4%；BaO：5.0-7.0%；TiO2：0.2-0.5%；Fe2O3：0.1-0.2%；P2O5：0.2-0.4%。
7. The glaze with semi-bright and fine texture as claimed in any one of claims 4 to 6, wherein the melting temperature of the dry particles is 1115-1135 ℃; the initial melting temperature of the bright polished glaze is lower than that of dry granules, and preferably lower than that of the dry granules by 10-20 ℃.
8. The semi-bright fine-texture dry-particle glaze according to any one of claims 4 to 7, wherein the chemical composition of the glass powder comprises: by mass percent, IL: 5.0 to 7.0 percent; SiO 22：50-55%；Al2O3：12-15%；CaO：10-12%；MgO：6.0-8.0%；K2O：1.0-1.5%；Na2O：4.0-5.0%；ZnO：1-2%；TiO2：0.1-0.2%；Fe2O3：0.2-0.3%；P2O5：0.05-0.1%。
9. The semi-glossy dry glaze with fine texture as claimed in any one of claims 1 to 8, wherein the semi-glossy dry glaze has a glossiness of 15 to 25 degrees.
10. Use of a semi-bright, fine-textured dry-particle glaze according to any one of claims 1 to 9 in a ceramic board, wherein the use comprises: applying base coat on the surface of the blank; printing a pattern on the surface of the blank body after the ground coat is applied by ink jet; screen-printing semi-bright fine texture dry granular glaze on the surface of the blank after the pattern is printed by ink jet; and firing; preferably, the specific gravity of the semi-bright fine texture dry granular glaze is 1.37-1.40 g/cm3The glazing amount is 80-100g/m2。
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