CN117105698B - Flash rock glaze ceramic imitating rough surface and preparation method thereof - Google Patents

Flash rock glaze ceramic imitating rough surface and preparation method thereof Download PDF

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CN117105698B
CN117105698B CN202311167140.3A CN202311167140A CN117105698B CN 117105698 B CN117105698 B CN 117105698B CN 202311167140 A CN202311167140 A CN 202311167140A CN 117105698 B CN117105698 B CN 117105698B
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parts
glaze
flash
rock
ground
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CN117105698A (en
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陈友谊
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Dehua County Penglida Ceramic Technology Co ltd
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Dehua County Penglida Ceramic Technology Co ltd
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    • YGENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y02TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
    • Y02PCLIMATE CHANGE MITIGATION TECHNOLOGIES IN THE PRODUCTION OR PROCESSING OF GOODS
    • Y02P40/00Technologies relating to the processing of minerals
    • Y02P40/60Production of ceramic materials or ceramic elements, e.g. substitution of clay or shale by alternative raw materials, e.g. ashes

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Abstract

The invention relates to the technical field of ceramics and preparation thereof, in particular to a rough surface simulated flashing rock glaze ceramic and a preparation method thereof. Firstly, applying a layer of ground coat to improve the bonding degree of the blank glaze, prevent the blank from being partially exposed, and improve the bonding strength of the ground coat and the ground coat; the light scattering powder is positioned between the ground glaze and the surface glaze, can cause the surface glaze to locally warp and pit, has more natural simulation effect, presents a matte earth yellow glaze effect close to rock after the surface glaze is sintered, spreads over the pit and bulges on the surface, and is mixed with flash particles among the pits so as to have the texture of matte flash rock; the vibration of the vibration film drives the flash powder to diffuse in the airtight box body, so that the flash powder can be uniformly covered on the surface of the ground glaze.

Description

Flash rock glaze ceramic imitating rough surface and preparation method thereof
Technical Field
The invention relates to the technical field of ceramics and preparation thereof, in particular to a flash rock glazed ceramic imitating a rough surface and a preparation method thereof.
Background
The glaze is a layer of glass body covered on the surface of a ceramic blank, has similar physical and chemical properties as glass, compact texture, water resistance, air impermeability and acid and alkali corrosion resistance, and is usually prepared by adopting natural mineral raw materials and certain chemical raw materials to match, and is melted at high temperature to form a glassy layer with luster. The glaze has various weights, wherein the glaze surface has a flashing effect, namely flashing glaze, has a metal mirror-like reflection effect on incident light, when a flashing glaze finished product is observed, metal-like reflection can be seen under a certain light incident angle, the metal-like reflection is different from the reflection of a metal luster glaze, the existing flashing glaze has the characteristic of mirror reflection, components with flashing characteristics are usually directly added into the glaze, the components are mixed and then applied onto a blank body, and the flashing glaze is prepared by firing.
Disclosure of Invention
It is an object of the present invention to solve at least the above problems by a matte-like sparkling rock-glazed ceramic and a method for producing the same.
In order to solve the technical problems, the invention adopts the following technical scheme: the flash rock glaze ceramic imitating the rough surface comprises a green body, wherein the green body is covered with ground glaze and overglaze, flash powder is clamped between the ground glaze and overglaze, pits and protrusions are distributed on the surface of the overglaze after firing, and the overglaze comprises the following raw materials in parts by weight: 10-12 parts of wollastonite, 5-6 parts of zinc oxide, 8-9 parts of titanium dioxide, 5-6 parts of zirconium dioxide, 1-2 parts of ammonium tungstate, 1-2 parts of lead chromate, 1-2 parts of water glass, 20-22 parts of quartz stone, 30-35 parts of potassium feldspar, 10-12 parts of limestone and 15-18 parts of calcite.
Preferably, the raw materials of the base glaze comprise the following components in parts by weight: 20-25 parts of potassium feldspar, 10-15 parts of quartz, 8-10 parts of kaolin, 7-9 parts of dolomite, 5-7 parts of zinc oxide, 10-12 parts of calcium carbonate and 6-8 parts of barium carbonate.
Preferably, the flash powder comprises the following components in parts by weight: 20-22 parts of cerium oxide, 10-12 parts of zirconium oxide, 15-16 parts of quartz stone and 10-12 parts of feldspar.
The preparation method of the simulated matte flashing rock glazed ceramic is characterized by comprising the following steps of:
Step a, preparing a blank body, and drying and forming;
b, applying a primer on the green body, and drying the primer to a semi-dry state;
Step c, placing the blank with the base glaze in an excitation box with flashing parts, and covering a layer of flashing powder on the base glaze;
step d, taking out the blank body and continuously drying;
step e, applying overglaze on the ground glaze, and drying;
And f, firing in a kiln to obtain the simulated matte flash rock glazed ceramic.
Preferably, in the step b, the primer is dried to a moisture content of 15-20%.
Preferably, in the step c, the excitation box includes box, upper cover, places seat, vibrating diaphragm and excitation source, the upper cover openable sets up in the box top, place the seat setting in the box inside, be used for placing pottery, vibrating diaphragm detachable installs in the bottom of the box, the excitation source sets up in the vibrating diaphragm below.
Preferably, the excitation source is a mechanical excitation source or an ultrasonic transducer.
Preferably, in the step c, when in use, a certain amount of flash powder is put into the laser film in advance, the upper cover is opened, the blank body with the base glaze is placed on the placing seat, after the upper cover is covered, the excitation source is started, and the excitation source drives the laser film to vibrate at high frequency, so that the flash powder is driven to diffuse into the inner space of the box body, and then the flash powder is uniformly covered on the surface of the base glaze.
Preferably, in the step f, the glaze firing temperature is 1100-1150 ℃.
Preferably, in the step b, before applying the primer on the blank, the primer is prepared, and the method specifically includes the following steps:
Adding CMC glue into 50% water, mixing, adding cellulase, fermenting in 50-60 deg.C with relative humidity of 60-80% for 1-2 days;
And mixing the fermented CMC glue with other components of the overglaze to prepare the overglaze.
As can be seen from the above description, the simulated matte flash rock glazed ceramic and the preparation method thereof provided by the invention have the following beneficial effects: firstly, applying a layer of ground coat to improve the bonding degree of the blank glaze, prevent the blank from being partially exposed, and improve the bonding strength of the ground coat and the ground coat; the light scattering powder is positioned between the ground glaze and the surface glaze, can cause the surface glaze to locally warp and pit, has more natural simulation effect, presents a matte earth yellow glaze effect close to rock after the surface glaze is sintered, spreads over the pit and bulges on the surface, and is mixed with flash particles among the pits so as to have the texture of matte flash rock; the vibration of the vibration film drives the flash powder to diffuse in the airtight box body, so that the flash powder can be uniformly covered on the surface of the ground glaze.
Detailed Description
The invention is further described below by means of specific embodiments.
The invention is further described in connection with the following detailed description, in order to make the technical means, the creation characteristics, the achievement of the purpose and the effect of the invention easy to understand.
The invention discloses a rough-surface-imitated flash rock glaze ceramic, which comprises a green body, wherein the green body is covered with a ground glaze and a cover glaze, flash powder is clamped between the ground glaze and the cover glaze, pits and protrusions are distributed on the surface of the cover glaze after firing, and the cover glaze comprises the following raw materials in parts by weight: 10-12 parts of wollastonite, 5-6 parts of zinc oxide, 8-9 parts of titanium dioxide, 5-6 parts of zirconium dioxide, 1-2 parts of ammonium tungstate, 1-2 parts of lead chromate, 1-2 parts of water glass, 20-22 parts of quartz stone, 30-35 parts of potassium feldspar, 10-12 parts of limestone and 15-18 parts of calcite. If only one layer of overglaze is applied, the overglaze is easy to fall off after skinning and pit forming, so that local blank body is exposed, therefore, a layer of base glaze is firstly applied to improve the combination degree of the blank glaze, prevent the blank body from being exposed locally and improve the bonding strength of the overglaze and the base glaze; the light scattering powder is positioned between the ground glaze and the surface glaze, so that local warping and pit of the surface glaze can be caused, the simulation effect is more natural, the light scattering powder is not directly mixed in the surface glaze, the proportion of the light scattering powder is not well controlled, the surface glaze with too high proportion can fall off in a large amount, the rough surface effect is not obvious when the proportion is too low, and the concave glaze and the peeling are not well caused when the light scattering powder is positioned on the surface layer of the surface glaze; the surface glaze has a matte earth yellow glaze effect similar to that of rock after firing, the surface of the surface glaze is spread over pits and bulges, and flash particles are mixed among the pits, so that the surface glaze has the texture of rough surface flash rock.
The raw materials of the base glaze comprise the following components in parts by weight: 20-25 parts of potassium feldspar, 10-15 parts of quartz, 8-10 parts of kaolin, 7-9 parts of dolomite, 5-7 parts of zinc oxide, 10-12 parts of calcium carbonate and 6-8 parts of barium carbonate. The ground glaze is transparent glaze, is positioned between the green body and the overglaze, is used as a bonding layer of the overglaze and the green body, improves the bonding degree of the overglaze, and prevents the green body from being exposed locally when the overglaze locally generates concave glaze or skin.
The flash powder comprises the following components in parts by weight: 20-22 parts of cerium oxide, 10-12 parts of zirconium oxide, 15-16 parts of quartz stone and 10-12 parts of feldspar. The preparation method of the flash powder comprises the following steps: the components are mixed and then calcined at a high temperature of 1400 ℃, then crushed and ground into sparkling particles with the required particle size, the particle size is controlled to be 0.2-0.3mm, the crystal growth of the cerium oxide after glaze firing is grown, and the cerium oxide is directionally separated out, so that the prepared sparkling powder has good radioactivity, the sparkling powder has a sparkling effect, and finally the prepared glaze can observe the sparkling particles in illumination.
The preparation method of the flash rock glaze ceramic with the simulated rough surface comprises the following steps:
Step a, preparing a blank body, and drying and forming;
b, applying a primer on the green body, and drying the primer to a semi-dry state;
Step c, placing the blank with the base glaze in an excitation box with flashing parts, and covering a layer of flashing powder on the base glaze;
step d, taking out the blank body and continuously drying;
step e, applying overglaze on the ground glaze, and drying;
And f, firing in a kiln to obtain the simulated matte flash rock glazed ceramic. The melting point of the flash powder is higher than that of the ground glaze and the overglaze, so that the stability of the flash powder is higher in the glaze firing process, and the flash powder and the overglaze are in great difference in terms of dryness, humidity, fluidity and combination property, so that the overglaze is partially broken to generate concave glaze or skin, the overglaze presents an uneven simulated flash rock glaze effect, meanwhile, CMC glue in the overglaze is subjected to fermentation treatment in advance, and the phenomenon of partial blackening and graying is formed after firing, which is similar to the partial dark gray rock effect on flash rock, and has a good artistic effect.
In the step b, the ground coat is dried until the water content is 15-20%. The ground glaze is dried to a semi-dry state, the fluidity of the glaze is reduced, the ground glaze structure is relatively stable, and meanwhile, a certain water content is reserved, so that the astigmatic powder can be effectively adsorbed.
In step c, the excitation case includes box, upper cover, place the seat, vibrating diaphragm and excitation source, the upper cover openable sets up in the box top, place the seat set up in the box inside, be used for placing pottery, vibrating diaphragm detachable installs in the bottom half, the excitation membrane is installed on the frame, frame detachable installs in the bottom half, the vibrating diaphragm is the polymer film that has elasticity, the excitation source sets up in the vibrating diaphragm below, under the drive of excitation source, the excitation membrane can take place high-frequency vibration, and then drive the flash powder vibration on it and spread to whole box in, the air current flow that its produced is very little, the destruction to the overglaze is little. The excitation source is a mechanical excitation source or an ultrasonic transducer.
In the step c, when the device is used, a certain amount of flash powder is put into the laser film in advance, the upper cover is opened, a blank body with the ground coat is put on the placing seat, after the upper cover is covered, the excitation source is started, and the excitation source drives the laser film to vibrate at high frequency, so that the flash powder is driven to diffuse into the inner space of the box body, and the flash powder is further uniformly covered on the surface of the ground coat. The flash powder is driven to diffuse in the airtight box body by vibration of the vibrating diaphragm, so that the flash powder can be uniformly covered on the surface of the base glaze, if the flash powder is driven in a blowing mode, more flash powder on the windward side can be possibly caused under the action of the blowing, less flash powder on the leeward side is possibly caused, the distribution is uneven, and the local structure of the incompletely dried base glaze can be damaged by excessive airflow, so that the base body is exposed.
In the step f, the glaze firing temperature is 1100-1150 ℃. And preserving the heat for 3-4 hours after reaching the glaze firing temperature.
In the step b, before the ground coat is applied on the green body, the ground coat is prepared, and the method specifically comprises the following steps:
Adding CMC glue into 50% water, mixing, adding cellulase, fermenting in 50-60 deg.C with relative humidity of 60-80% for 1-2 days; after fermentation, the CMC glue is partially decomposed into glucose and xylose, so that the formation of pits on the glaze surface is aggravated, and partial organic matters are carbonized after glaze firing, so that the glaze surface has the effects of partial blackening and graying; the fermentation speed is low, and the fermentation speed can be improved through the fermentation of cellulase and a high-temperature and high-humidity environment.
And mixing the fermented CMC glue with other components of the overglaze to prepare the overglaze.
The foregoing is merely a few specific embodiments of the present invention, but the design concept of the present invention is not limited thereto, and any insubstantial modification of the present invention by using the concept should be construed as infringement of the protection scope of the present invention.

Claims (6)

1. The preparation method of the flash rock glaze ceramic with the simulated rough surface is characterized by comprising the following steps:
Step a, preparing a blank body, and drying and forming;
b, applying a primer on the green body, and drying the primer to a semi-dry state;
C, placing the blank with the base glaze in an excitation box with flashing powder, and covering a layer of flashing powder on the base glaze;
step d, taking out the blank body and continuously drying;
step e, applying overglaze on the ground glaze, and drying;
f, firing in a kiln to obtain the simulated rough surface flash rock glazed ceramic;
In the step c, the excitation box comprises a box body, an upper cover, a placing seat, a vibration excitation film and an excitation source, wherein the upper cover is arranged at the top of the box body in an openable manner, the placing seat is arranged in the box body and is used for placing ceramics, the vibration excitation film is detachably arranged at the bottom of the box body, and the excitation source is arranged below the vibration excitation film;
The excitation source is a mechanical excitation source or an ultrasonic transducer;
In the step c, when the device is used, a certain amount of flash powder is put on the laser film in advance, the upper cover is opened, a blank body with ground glaze is put on the placing seat, after the upper cover is covered, the excitation source is started, and the excitation source drives the laser film to vibrate at high frequency, so that the flash powder is driven to diffuse into the inner space of the box body, and the flash powder is further uniformly covered on the surface of the ground glaze;
The rough surface-imitating flash rock glaze ceramic comprises a green body, wherein the green body is covered with ground glaze and overglaze, flash powder is clamped between the ground glaze and overglaze, pits and protrusions are distributed on the surface of the overglaze after firing, and the overglaze comprises the following raw materials in parts by weight: 10-12 parts of wollastonite, 5-6 parts of zinc oxide, 8-9 parts of titanium dioxide, 5-6 parts of zirconium dioxide, 1-2 parts of ammonium tungstate, 1-2 parts of lead chromate, 1-2 parts of water glass, 20-22 parts of quartz stone, 30-35 parts of potassium feldspar, 10-12 parts of limestone and 15-18 parts of calcite.
2. The method for preparing the simulated matte flashing rock glazed ceramic according to claim 1, wherein the method comprises the following steps: the base glaze comprises the following raw materials in parts by weight: 20-25 parts of potassium feldspar, 10-15 parts of quartz, 8-10 parts of kaolin, 7-9 parts of dolomite, 5-7 parts of zinc oxide, 10-12 parts of calcium carbonate and 6-8 parts of barium carbonate.
3. The method for preparing the simulated matte flashing rock glazed ceramic according to claim 1, wherein the method comprises the following steps: the flashing powder comprises the following components in parts by weight: 20-22 parts of cerium oxide, 10-12 parts of zirconium oxide, 15-16 parts of quartz stone and 10-12 parts of feldspar.
4. The method for preparing the simulated matte flashing rock glazed ceramic according to claim 1, wherein the method comprises the following steps: in the step b, the ground coat is dried until the water content is 15-20%.
5. The method for preparing the simulated matte flashing rock glazed ceramic according to claim 1, wherein the method comprises the following steps: in the step f, the glaze firing temperature is 1100-1150 ℃.
6. The method for preparing the simulated matte flashing rock glazed ceramic according to claim 1, wherein the method comprises the following steps: in the step b, before the ground coat is applied on the green body, the ground coat is prepared, and the method specifically comprises the following steps:
Adding CMC glue into 50% water, mixing, adding cellulase, fermenting in 50-60 deg.C with relative humidity of 60-80% for 1-2 days;
And mixing the fermented CMC glue with other components of the ground coat to prepare the ground coat.
CN202311167140.3A 2023-09-12 2023-09-12 Flash rock glaze ceramic imitating rough surface and preparation method thereof Active CN117105698B (en)

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Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN109968505A (en) * 2019-04-24 2019-07-05 江西斯米克陶瓷有限公司 A kind of Glazing device for ceramic process
CN115196994A (en) * 2022-08-15 2022-10-18 福建省德化环宇陶瓷有限公司 Touch gold glaze ceramic and preparation method thereof

Family Cites Families (11)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2008137129A1 (en) * 2007-05-04 2008-11-13 E. I. Du Pont De Nemours And Company Coated particle with shimmering appearance and engineered stone containing coated particles
KR101851396B1 (en) * 2009-11-10 2018-04-23 롯데첨단소재(주) Colored Material Coated Transparent Chip and Native Rock Combined With Resin Composition Including The Same
CN102491787B (en) * 2011-11-14 2013-05-01 星谊精密陶瓷科技(昆山)有限公司 High-temperature mirror surface flashy fritted glaze and preparation method thereof
CN103102181B (en) * 2012-12-19 2015-01-21 广东东鹏陶瓷股份有限公司 Method for preparing flash glazed wall tile
CN105924134B (en) * 2016-04-25 2018-05-25 广东宏宇新型材料有限公司 There is resource-conserving glazed tile of pearly-lustre and color changeable effect and preparation method thereof on surface
CN107352968A (en) * 2017-08-24 2017-11-17 四川汇丰陶瓷有限公司 A kind of preparation method of ceramic body and bright convex glaze ceramics
CN110357668A (en) * 2019-08-09 2019-10-22 东莞市唯美陶瓷工业园有限公司 A kind of full throwing glaze Ceramic Tiles and preparation method thereof with graininess flashing ornaments
CN111574245B (en) * 2020-04-30 2021-05-04 佛山市陶莹新型材料有限公司 3D (three-dimensional) dazzling ceramic tile and preparation method thereof
CN112811939A (en) * 2021-02-07 2021-05-18 广东萨米特陶瓷有限公司 Ceramic plate with glittering grain effect and manufacturing method thereof
CN112794736B (en) * 2021-04-09 2021-08-10 蒙娜丽莎集团股份有限公司 Ceramic plate with colorful cloud surface decoration effect and preparation method thereof
CN114620936A (en) * 2022-03-31 2022-06-14 杭州天尼文化艺术有限公司 Celadon product with surface flashing and in-glaze color effects and decoration method

Patent Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN109968505A (en) * 2019-04-24 2019-07-05 江西斯米克陶瓷有限公司 A kind of Glazing device for ceramic process
CN115196994A (en) * 2022-08-15 2022-10-18 福建省德化环宇陶瓷有限公司 Touch gold glaze ceramic and preparation method thereof

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