CN111925121A - Ultralow-temperature frit without fusing pearlescent pigment, preparation method thereof and ceramic glaze - Google Patents
Ultralow-temperature frit without fusing pearlescent pigment, preparation method thereof and ceramic glaze Download PDFInfo
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- CN111925121A CN111925121A CN202011036746.XA CN202011036746A CN111925121A CN 111925121 A CN111925121 A CN 111925121A CN 202011036746 A CN202011036746 A CN 202011036746A CN 111925121 A CN111925121 A CN 111925121A
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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
- C03C8/02—Frit compositions, i.e. in a powdered or comminuted form
- C03C8/04—Frit compositions, i.e. in a powdered or comminuted form containing zinc
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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
- C03C8/14—Glass frit mixtures having non-frit additions, e.g. opacifiers, colorants, mill-additions
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Abstract
The invention relates to the technical field of ceramics, and discloses an ultralow-temperature frit without melting pearlescent pigment, a preparation method thereof and a ceramic glaze. The ultra-low temperature frit of the non-fusible pearlescent pigment comprises the following chemical components in percentage by weight: SiO 22 35‑40wt%、Al2O3 12‑15wt%、CaO 7‑10wt%、MgO 0‑2wt%、ZnO 1‑3wt%、BaO 7‑9wt%、B2O3 25-30wt% and Li2O1-3 wt%. The glaze firing temperature is not higher than 1000 ℃. The invention also provides a preparation method of the ultralow-temperature frit of the non-fusible pearlescent pigment and an ultralow-temperature ceramic glaze; the ultralow-temperature ceramic glaze without the pearlescent pigment molten comprises pearlescent pigment and ultralow-temperature frit; the Mohs hardness of the glaze layer of the prepared underglaze color or in-glaze color is 4 grade, and the prepared underglaze color or in-glaze color has good acid and alkali resistance and wear resistance.
Description
Technical Field
The invention relates to the technical field of ceramics, in particular to an ultralow-temperature frit without melting pearlescent pigment, a preparation method thereof and a ceramic glaze.
Background
With the gradual maturity of ceramic technology, ceramic products have gone into thousands of households, become indispensable articles for daily use, and the types of ceramic glaze are more and more abundant. The common ceramic glaze still lacks certain texture although the color and luster are better. In this context, various special effect ceramic articles have emerged, including ceramic articles having pearlescent pigments.
The pearlescent pigment is a common pigment, the inner core of the substance framework is natural mica, synthetic mica, glass, aluminum sheet and other substances with low optical refractive index, and the outer layer is coated with titanium dioxide and other metal oxides with high optical refractive index, so that interference color is formed, and gorgeous color can be generated.
However, the natural mica pearlescent pigment can resist the temperature of only 600-650 ℃, and the synthetic mica pearlescent pigment can resist the temperature of 900-1000 ℃. However, even in the tolerable temperature range, the mica pearlescent pigment has a phenomenon of obviously lightening and even whitening when fired as an in-glaze color and an under-glaze color, because the melting point of the mica pearlescent pigment is greatly reduced by the fluxing agent in the glaze, and the mica pearlescent pigment is melted by the glaze and loses the original material structure. Therefore, pearlescent pigments are frequently used in the fields of coating materials, inks, textiles, printing, rubbers, plastics, etc. which do not require high-temperature processing, and are rarely used in the field of ceramics.
Because the ceramics need to be sintered at high temperature, the pearlescent pigment cannot pass the existing high-temperature production process of the ceramics such as glazing, color bleeding and the like due to the limit of chemical resistance and heat resistance, and even if the individual pearlescent pigment can be used for glazing, the pearlescent pigment can only be used in the glazing process without high-temperature processing.
Disclosure of Invention
The invention provides an ultralow temperature frit without melting pearlescent pigment and a preparation method thereof, wherein the glaze firing temperature is not higher than 1000 ℃, so that the pearlescent pigment is not melted when the glaze is fired, and the pearlescent pigment can be used in the process of underglaze color and in-glaze color.
The invention also provides an ultralow-temperature ceramic glaze material without melting pearlescent pigment, which contains the ultralow-temperature frit without melting pearlescent pigment, and the glaze material can be fired at the firing temperature of not higher than 1000 ℃, so that the pearlescent pigment is not melted during firing of the glaze material, and the pearlescent pigment can be used in the underglaze color process.
The pearlescent pigment is not fused in the glaze when the ultra-low temperature ceramic glaze is fired, and the glaze can be fired at a firing temperature of not more than 1000 ℃, so that the pearlescent pigment can be used in under-glaze and in-glaze decoration processes.
To achieve the purpose, the invention adopts the following technical scheme
The ultra-low temperature frit of the non-melting pearlescent pigment comprises the following chemical components in percentage by weight: SiO 22 35-40wt%、Al2O3 12-15wt%、CaO 7-10wt%、MgO 0-2wt%、ZnO 1-3wt%、BaO 7-9wt%、B2O325-30wt% and Li2O 1-3wt%；
The glaze firing temperature of the ultra-low temperature frits of the non-melting pearlescent pigment is not higher than 1000 ℃.
Specifically, the raw materials comprise, by weight, 15-20% of quartz, 5-10% of kaolin, 5-8% of calcined alumina, 13-18% of wollastonite, 6-10% of barium carbonate, 1-5% of lithium carbonate, 1-3% of zinc oxide and 35-40% of boric acid.
Further, the invention also provides a preparation method of the ultra-low temperature frit of the non-melting pearlescent pigment, which comprises the following steps:
s1), preparing raw materials, wherein the raw materials comprise, by weight, 15-20% of quartz, 5-10% of kaolin, 5-8% of calcined alumina, 13-18% of wollastonite, 6-10% of barium carbonate, 1-5% of lithium carbonate, 1-3% of zinc oxide and 35-40% of boric acid;
s2) introducing the prepared raw materials into a frit furnace, and heating until the raw materials are completely melted to obtain a melt;
s3) putting the melt into water, quenching with water, drying, crushing and sieving to obtain the ultralow temperature frit.
Specifically, the melting temperature in the step S2) is 1200-1500 ℃.
The invention further provides an ultralow-temperature ceramic glaze material without melting pearlescent pigment, which comprises the raw materials of pearlescent pigment and the ultralow-temperature frit without melting pearlescent pigment;
the firing temperature of the ultralow-temperature ceramic glaze material of the non-melting pearlescent pigment is 650-750 ℃.
Preferably, the pearlescent pigment is at least one of natural mica pearlescent pigment, synthetic mica pearlescent pigment, glass-based pearlescent pigment, aluminum-based pearlescent pigment, color-changing pearlescent pigment, glitter powder, laser pearlescent powder and magnetic conductive pearlescent pigment.
Preferably, the ultralow-temperature ceramic glaze material of the non-melting pearlescent pigment is raw glaze;
the ultra-low temperature frit comprising the non-melting pearlescent pigment does not exceed 50wt% of the weight of the non-melting pearlescent pigment ultra-low temperature ceramic frit.
Preferably, the ultralow-temperature ceramic glaze material without the pearlescent pigment is one of frit glaze or dry particle glaze;
the ultra-low temperature frit containing the non-melting pearlescent pigment accounts for 90-95wt% of the weight of the ultra-low temperature ceramic glaze containing the non-melting pearlescent pigment.
Specifically, the firing time of the ultralow-temperature ceramic glaze without melting pearlescent pigments is 45-75 min.
It is practicable that the ultralow temperature ceramic glaze of the non-melting pearlescent pigment is used as an underglaze color or an in-glaze color.
The invention has the beneficial effects that:
aiming at the defects of the prior art, the invention aims to break through the constraint that the pearlescent pigment can only be used for ceramic overglaze decoration at most, the pearlescent pigment provided by the invention is not melted by glaze, the pearlescent pigment can be applied to the overglaze decoration and underglaze decoration process, and the application range of the pearlescent pigment in the ceramic industry is expanded.
1. The invention realizes that the pearlescent pigment is used as the underglaze color and the in-glaze color on the ceramic product without any molten pearlescent pigment, greatly expands the application of the pearlescent pigment in the ceramic product and solves the problem that the pearlescent pigment in the prior art can only be used for the ceramic overglaze color at most.
2. The ultralow-temperature ceramic glaze material of the non-melting pearlescent pigment has a glaze layer with Mohs hardness of 4 grade, good acid and alkali resistance and wear resistance, is lead-free and cadmium-free, completely meets the national standard requirements of various ceramic products, and solves the technical problem that the pearlescent pigment used for glazing in the prior art is not wear-resistant.
Detailed Description
The technical solution of the present invention is further described below in specific embodiments.
The ultra-low temperature frit of the non-melting pearlescent pigment comprises the following chemical components in percentage by weight: SiO 22 35-40wt%、Al2O3 12-15wt%、CaO 7-10wt%、MgO 0-2wt%、ZnO 1-3wt%、BaO 7-9wt%、B2O325-30wt% and Li2O 1-3wt%；
The glaze firing temperature of the ultra-low temperature frits of the non-melting pearlescent pigment is not higher than 1000 ℃.
Aiming at overcoming the defects of the prior art, the invention aims to break the constraint that the pearlescent pigment can only be used for ceramic overglaze decoration at most, and provides the ultralow-temperature frit of the non-melting pearlescent pigment, which is fired at the ultralow temperature of not higher than 1000 ℃ to completely not melt the pearlescent pigment, so that the pearlescent pigment can be applied to in-glaze decoration and under-glaze decoration, and the application range of the pearlescent pigment in the ceramic industry is expanded.
The ultralow-temperature frit of the non-meltable pearlescent pigment has less liquid phase during melting, and the liquid phase during melting is less when the ultralow-temperature frit of the non-meltable pearlescent pigment is prepared into the frit, so that the mica pearlescent pigment can be ensured not to be melted in the glaze containing the ultralow-temperature frit of the non-meltable pearlescent pigment.
The ultralow-temperature frit of the non-meltable pearlescent pigment contains 35-40wt% of boric acid, can effectively reduce the glaze firing temperature of a glaze of the ultralow-temperature frit containing the non-meltable pearlescent pigment, and is fired at a temperature of not higher than 1000 ℃, so that the risk of melting the pearlescent pigment during firing is further reduced.
Specifically, the raw materials comprise, by weight, 15-20% of quartz, 5-10% of kaolin, 5-8% of calcined alumina, 13-18% of wollastonite, 6-10% of barium carbonate, 1-5% of lithium carbonate, 1-3% of zinc oxide and 35-40% of boric acid.
The ultra-low temperature frit of the non-fusible pearlescent pigment contains 25 to 30 weight percent of B2O3，B2O3Is a strong fluxing agent, in B2O3、Al2O3And SiO2The glaze firing temperature of the ultra-low temperature frit of the non-melting pearlescent pigment can be reduced by the synergistic effect of (a) and (b), thereby reducing the risk of the pearlescent pigment being melted during firing.
The ultra-low temperature frit of the non-fusible pearlescent pigment of the present invention does not contain K2O、Na2And the fusing agents such as O and the like can not greatly reduce the melting point of the mica pearlescent pigment, so that the original material structure is lost, and the phenomenon that the pearlescent pigment obviously becomes light in color or even white is avoided.
The invention also provides a preparation method of the ultra-low temperature frit of the non-melting pearlescent pigment, which comprises the following steps:
s1), preparing raw materials, wherein the raw materials comprise, by weight, 15-20% of quartz, 5-10% of kaolin, 5-8% of calcined alumina, 13-18% of wollastonite, 6-10% of barium carbonate, 1-5% of lithium carbonate, 1-3% of zinc oxide and 35-40% of boric acid;
s2) introducing the prepared raw materials into a frit furnace, and heating until the raw materials are completely melted to obtain a melt;
s3) putting the melt into water, quenching with water, drying, crushing and sieving to obtain the ultralow temperature frit.
The frit or frit dry pellets may be prepared by conventional techniques of the prior art.
Specifically, the melting temperature in the step S2) is 1200-1500 ℃.
Furthermore, the invention also provides an ultralow-temperature ceramic glaze material without melting pearlescent pigment, which comprises the raw materials of the pearlescent pigment and the ultralow-temperature frit without melting pearlescent pigment;
it is worth explaining that, through the above steps, the ultra-low temperature frit of the non-melting pearlescent pigment is made into the frit or dry particles of the frit, and then added into the ground coat or the overglaze, and then the staged firing process of the ground coat and the overglaze is adopted, so that the firing temperature of the glaze layer of the ultra-low temperature frit containing the non-melting pearlescent pigment can be further reduced, the pearlescent pigment is prevented from losing efficacy due to the firing temperature higher than the heat-resistant temperature in the firing process, and the firing cost of the ultra-low temperature ceramic glaze of the non-melting pearlescent pigment can be reduced.
The firing temperature of the ultralow-temperature ceramic glaze material of the non-melting pearlescent pigment is 650-750 ℃.
The ultralow-temperature ceramic glaze material of the non-melting pearlescent pigment comprises the ultralow-temperature frit of the non-melting pearlescent pigment, and is fired at the temperature of 650-750 ℃, so that the pearlescent pigment contained in the ultralow-temperature ceramic glaze material of the non-melting pearlescent pigment can not be melted, and a glaze layer of a prepared product has a good pearlescent effect.
Preferably, the pearlescent pigment is at least one of natural mica pearlescent pigment, synthetic mica pearlescent pigment, glass-based pearlescent pigment, aluminum-based pearlescent pigment, color-changing pearlescent pigment, glitter powder, laser pearlescent powder and magnetic conductive pearlescent pigment.
The sintering temperature of 650-750 ℃ is adopted for sintering, and all the pearlescent pigments which are commercially available can be adopted as the pearlescent pigment, so that the application range is good.
Preferably, the ultralow-temperature ceramic glaze material of the non-melting pearlescent pigment is raw glaze;
the ultra-low temperature frit containing the non-melting pearlescent pigment is not more than 50wt% of the weight of the ultra-low temperature ceramic glaze containing the non-melting pearlescent pigment
Preferably, the ultralow-temperature ceramic glaze material without the pearlescent pigment is one of frit glaze or dry particle glaze;
the ultra-low temperature frit containing the non-melting pearlescent pigment accounts for 90-95wt% of the weight of the ultra-low temperature ceramic glaze containing the non-melting pearlescent pigment.
The ultralow-temperature ceramic glaze without the pearlescent pigment molten is suitable for various types of basic glazes, has a good application range, can be used for surface decoration of various ceramic products, and has the firing temperature of not higher than 1000 ℃ and lower firing cost.
Specifically, the firing time of the ultralow-temperature ceramic glaze without melting pearlescent pigments is 45-75 min.
The firing temperature is 650-750 ℃, the ultra-low temperature firing is adopted, and the firing is completed within 45-75min, so that the pearlescent pigment contained in the ground coat or the overglaze can be ensured not to be melted, and good under-glaze color or in-glaze color effect can be obtained.
It is practicable that the ultralow temperature ceramic glaze of the non-melting pearlescent pigment is used as an underglaze color or an in-glaze color.
The invention realizes that the pearlescent pigment is used as the underglaze color and the in-glaze color on the ceramic product without any molten pearlescent pigment, greatly expands the application of the pearlescent pigment in the ceramic product and solves the problem that the pearlescent pigment in the prior art can only be used for the ceramic overglaze color at most.
The ultralow-temperature ceramic glaze material of the non-melting pearlescent pigment has a glaze layer with Mohs hardness of 4 grade, good acid and alkali resistance and wear resistance, is lead-free and cadmium-free, completely meets the national standard requirements of various ceramic products, and solves the technical problem that the pearlescent pigment used for glazing in the prior art is not wear-resistant.
The Mohs hardness of the prepared underglaze color and the glaze layer of the in-glaze color is 4 grade, the acid and alkali resistance and the wear resistance are good, and the lead and cadmium are free, thereby completely meeting the national standard requirements of various ceramic products.
Example one
1. The ultralow-temperature frit for the non-fusible pearlescent pigment comprises the following raw materials, by weight, 18% of quartz, 8% of kaolin, 8% of calcined alumina, 13% of wollastonite, 8% of barium carbonate, 1% of lithium carbonate, 2% of zinc oxide and 38% of boric acid;
2. the preparation method of the ultralow-temperature frit of the non-fusible pearlescent pigment comprises the following steps of:
s1), preparing raw materials, wherein the raw materials comprise, by weight, 18% of quartz, 8% of kaolin, 8% of calcined alumina, 13% of wollastonite, 8% of barium carbonate, 1% of lithium carbonate, 2% of zinc oxide and 38% of boric acid;
s2) introducing the prepared raw materials into a frit furnace, and heating until the raw materials are completely melted to obtain a melt;
s3) putting the melt into water, quenching with water, drying, crushing and sieving to obtain the ultralow-temperature frit;
the melting temperature in said step S2) was 1200 ℃.
3. The raw materials of the ultralow-temperature ceramic glaze material of the non-melting pearlescent pigment comprise the pearlescent pigment and the ultralow-temperature frit of the non-melting pearlescent pigment;
the pearlescent pigment is laser pearlescent powder and magnetic conductive pearlescent pigment.
4. The ultralow-temperature ceramic glaze material of the non-melting pearlescent pigment is raw glaze;
the ultra-low temperature frit comprising the non-melting pearlescent pigment does not exceed 50wt% of the weight of the non-melting pearlescent pigment ultra-low temperature ceramic frit.
5. The ultralow-temperature ceramic glaze material of the non-melting pearlescent pigment is one of frit glaze or dry particle glaze;
the ultra-low temperature frit containing the non-melting pearlescent pigment accounts for 90-95wt% of the weight of the ultra-low temperature ceramic glaze containing the non-melting pearlescent pigment.
6. The preparation of the underglaze color ceramic chip of the ultralow-temperature ceramic glaze without melting the pearlescent pigment comprises the following steps:
p1) taking a biscuit, and applying the ground glaze on the biscuit to obtain a semi-finished product A;
p2) drying the semi-finished product A in a drying kiln, then putting the dried semi-finished product A in a glaze firing kiln for firing, and cooling to obtain a semi-finished product B;
p3) crushing the fritted glaze, and sieving to prepare dry granules which are applied on a semi-finished product B;
p4) putting the semi-finished product B into a glaze kiln for firing, and cooling to obtain a semi-finished product C;
p5) carrying out surface reprocessing on the semi-finished product C, and obtaining the ceramic wash basin with the underglaze color after the detection is qualified;
the under-glaze of the underglazed ceramic tile comprising 45wt% or more of the ultra-low temperature frit and 5wt% of the pearlescent pigment;
the ground glaze comprises the following chemical components in percentage by weight: SiO 2237wt%、Al2O3 14wt%、CaO 7wt%、MgO 1wt%、ZnO 1wt%、BaO 9wt%、B2O329wt% and Li2O 2wt%；
The overglaze of the underglaze color comprising more than 90wt% of the ultra-low temperature frit;
the overglaze comprises the following chemical components in percentage by weight: SiO 2238wt%、Al2O313wt%、CaO 8wt%、MgO 2wt%、ZnO 2wt%、BaO 8wt%、B2O328wt% and Li2O 1wt%；
In the step P2), the firing temperature is 650-700 ℃, and the firing time is 75 minutes;
in step P4), the firing temperature is 700-750 ℃ and the firing time is 45 minutes.
7. The ceramic chip of the underglaze color prepared by the above embodiment is tested to be qualified in appearance effect, and the hardness of the glaze surface is tested to be 4 grades by adopting a Mohs hardness tester.
Example two
1. An ultra-low temperature frit of non-melting pearlescent pigment comprises the following raw materials by weight percent: 20% of quartz, 5% of kaolin, 5% of calcined alumina, 18% of wollastonite, 6% of barium carbonate, 3% of lithium carbonate, 3% of zinc oxide and 40% of boric acid;
2. the preparation method of the ultralow-temperature frit of the non-fusible pearlescent pigment comprises the following steps of:
s1), preparing raw materials, namely, 20% of quartz, 5% of kaolin, 5% of calcined alumina, 18% of wollastonite, 6% of barium carbonate, 3% of lithium carbonate, 3% of zinc oxide and 40% of boric acid according to weight percentage;
s2) introducing the prepared raw materials into a frit furnace, and heating until the raw materials are completely melted to obtain a melt;
s3) putting the melt into water, quenching with water, drying, crushing and sieving to obtain the ultralow-temperature frit;
the melting temperature in said step S2) was 1400 ℃.
3. The raw materials of the ultralow-temperature ceramic glaze material of the non-melting pearlescent pigment comprise the pearlescent pigment and the ultralow-temperature frit of the non-melting pearlescent pigment;
the pearlescent pigment is laser pearlescent powder and magnetic conductive pearlescent pigment.
4. The ultralow-temperature ceramic glaze material of the non-melting pearlescent pigment is raw glaze;
the ultra-low temperature frit comprising the non-melting pearlescent pigment does not exceed 50wt% of the weight of the non-melting pearlescent pigment ultra-low temperature ceramic frit.
5. The ultralow-temperature ceramic glaze material of the non-melting pearlescent pigment is one of frit glaze or dry particle glaze;
the ultra-low temperature frit containing the non-melting pearlescent pigment accounts for 90-95wt% of the weight of the ultra-low temperature ceramic glaze containing the non-melting pearlescent pigment.
6. The preparation of the ceramic tile with in-glaze decoration containing the ultralow-temperature ceramic glaze material of the non-melting pearlescent pigment comprises the following steps:
p1) taking a biscuit, and applying the ground glaze on the biscuit to obtain a semi-finished product A;
p2) drying the semi-finished product A in a drying kiln, then guiding the dried semi-finished product A into a glaze firing kiln for firing, and cooling to obtain a semi-finished product B;
p3) mixing the dry grain glaze and the pearlescent pigment uniformly, grinding and crushing, and sieving to prepare dry grain shape which is applied on a semi-finished product B;
p4) introducing the semi-finished product B into a glaze firing kiln for firing, and cooling to obtain a semi-finished product C;
p5) carrying out surface reprocessing on the semi-finished product C, and obtaining the ceramic tile with the in-glaze decoration after the detection is qualified;
the under-glaze for in-glaze colored ceramic tiles comprising 40wt% of the above ultra-low temperature frit; the ground glaze is a raw glaze of the ultra-low temperature frit containing the non-fusible pearlescent pigment;
the ground glaze comprises the following chemical components in percentage by weight: SiO 2240wt%、Al2O315wt%、CaO7wt%、MgO2wt%、ZnO3wt%、BaO7wt%、B2O325wt% and Li2O3wt%；
The overglaze of an in-glaze ceramic tile comprising 95wt% or more of the ultra-low temperature frit and 33wt% of the pearlescent pigment;
the overglaze comprises the following chemical components in percentage by weight: SiO 2239wt%、Al2O3 14wt%、CaO 7wt%、MgO 1wt%、ZnO 1wt%、BaO 9wt%、B2O327wt% and Li2O 2wt%；
In the step P2), the firing temperature is 650-700 ℃, and the firing time is 75 minutes;
in step P4), the firing temperature is 700-750 ℃ and the firing time is 45 minutes.
7. The ceramic tile containing the in-glaze decoration prepared in the example was checked to be acceptable in appearance, the hardness of the glaze was measured to be 4 grade by Mohs hardness tester, the abrasion resistance of the surface of the glazed tile was measured according to GBT3810.7-2016, and the number of grinding revolutions for visible abrasion of the glaze layer was measured to be 750 revolutions, and the abrasion resistance was rated to be 3 grade.
In conclusion, the ultralow-temperature ceramic glaze material without the pearlescent pigment melt does not contain K2O、Na2The flux such as O and the like has less liquid phase during melting, and the liquid phase during melting is less when the flux is made into fritted glaze or dry grain glaze, so that the mica pearlescent pigment can be ensured not to be melted in the ultralow temperature ceramic glaze material without melting the pearlescent pigment.
The ultralow temperature ceramic glaze of the non-melting pearlescent pigment contains 25 to 30 weight percent of B2O3，B2O3Is a strong fluxing agent, in B2O3、Al2O3And SiO2Can reduce the firing temperature of the ultralow-temperature ceramic glaze without melting the pearlescent pigment, thereby reducing the risk of melting the pearlescent pigment during firing.
The ultralow-temperature ceramic glaze without melting pearlescent pigment can be used for applying the pearlescent pigment to in-glaze decoration and under-glaze decoration, and expands the application range of the pearlescent pigment in the ceramic industry.
According to detection, the Mohs hardness of a glaze layer of a product prepared from the ultralow-temperature ceramic glaze without melting pearlescent pigments is 4 grades, the detection is carried out according to the measurement standard of the surface wear resistance of glazed bricks in GBT3810.7-2016, and the wear resistance grade of the glaze layer is 3 grades. Therefore, the glaze layer of the product prepared from the ultralow-temperature ceramic glaze material without melting pearlescent pigment has better hardness and wear resistance, and has better appearance effect and longer service life compared with the underglaze color in the prior art.
The technical principle of the present invention is described above in connection with specific embodiments. The description is made for the purpose of illustrating the principles of the invention and should not be construed in any way as limiting the scope of the invention. Based on the explanations herein, those skilled in the art will be able to conceive of other embodiments of the present invention without inventive effort, which would fall within the scope of the present invention.
Although embodiments of the present invention have been shown and described above, it is understood that the above embodiments are exemplary and not to be construed as limiting the present invention, and that variations, modifications, substitutions and alterations can be made in the above embodiments by those of ordinary skill in the art within the scope of the present invention.
Claims (10)
1. An ultra-low temperature frit that does not melt pearlescent pigments, comprising: the frit comprises the following chemical components in percentage by weight: SiO 22 35-40wt%、Al2O3 12-15wt%、CaO 7-10wt%、MgO 0-2wt%、ZnO 1-3wt%、BaO 7-9wt%、B2O325-30wt% and Li2O 1-3wt%；
The glaze firing temperature of the ultra-low temperature frit of the non-melting pearlescent pigment is not higher than 1000 ℃.
2. The ultra-low temperature frit for non-fusible pearlescent pigments according to claim 1, wherein the raw materials comprise, by weight, 15-20% of quartz, 5-10% of kaolin, 5-8% of calcined alumina, 13-18% of wollastonite, 6-10% of barium carbonate, 1-5% of lithium carbonate, 1-3% of zinc oxide, and 35-40% of boric acid.
3. The method of preparing the ultra-low temperature frit for non-meltable pearlescent pigments of claim 1 or 2, comprising the steps of:
s1), preparing raw materials, wherein the raw materials comprise, by weight, 15-20% of quartz, 5-10% of kaolin, 5-8% of calcined alumina, 13-18% of wollastonite, 6-10% of barium carbonate, 1-5% of lithium carbonate, 1-3% of zinc oxide and 35-40% of boric acid;
s2) introducing the prepared raw materials into a frit furnace, and heating until the raw materials are completely melted to obtain a melt;
s3) putting the melt into water, quenching with water, drying, crushing and sieving to obtain the ultralow temperature frit.
4. The method as claimed in claim 3, wherein the melting temperature in step S2) is 1200-1500 ℃.
5. An ultra-low temperature ceramic glaze of non-meltable pearlescent pigment, characterized in that the raw materials comprise a pearlescent pigment and the ultra-low temperature frit of non-meltable pearlescent pigment of claim 1 or 2;
the firing temperature of the ultralow-temperature ceramic glaze material of the non-melting pearlescent pigment is 650-750 ℃.
6. The ultra-low temperature ceramic glaze without melting pearlescent pigment of claim 5, wherein the pearlescent pigment is at least one of natural mica-based pearlescent pigment, synthetic mica-based pearlescent pigment, glass-based pearlescent pigment, aluminum-based pearlescent pigment, color-changing pearlescent pigment, glitter powder, laser pearlescent powder and magnetic conductive pearlescent pigment.
7. The ultra-low temperature ceramic glaze without melting pearlescent pigment according to claim 5, wherein the ultra-low temperature ceramic glaze without melting pearlescent pigment is raw glaze;
the ultra-low temperature frit comprising the non-melting pearlescent pigment does not exceed 50wt% of the weight of the non-melting pearlescent pigment ultra-low temperature ceramic frit.
8. The non-melting pearlescent pigment ultra-low temperature ceramic glaze according to claim 5, wherein the non-melting pearlescent pigment ultra-low temperature ceramic glaze is one of a frit glaze or a dry particle glaze;
the ultra-low temperature frit containing the non-melting pearlescent pigment accounts for 90-95wt% of the weight of the ultra-low temperature ceramic glaze containing the non-melting pearlescent pigment.
9. The ultra-low temperature ceramic glaze without melting pearlescent pigment according to claim 5, wherein the firing time of the ultra-low temperature ceramic glaze without melting pearlescent pigment is 45-75 min.
10. The non-fusing pearlescent pigment ultra-low temperature ceramic glaze according to claim 5, wherein the non-fusing pearlescent pigment ultra-low temperature ceramic glaze is used as an under-glaze color or an in-glaze color.
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