CN109279780A - A kind of ceramic glaze and preparation method thereof of resistance to alkali corrosion - Google Patents
A kind of ceramic glaze and preparation method thereof of resistance to alkali corrosion Download PDFInfo
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- CN109279780A CN109279780A CN201811547292.5A CN201811547292A CN109279780A CN 109279780 A CN109279780 A CN 109279780A CN 201811547292 A CN201811547292 A CN 201811547292A CN 109279780 A CN109279780 A CN 109279780A
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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
- C03C8/20—Glass frit mixtures having non-frit additions, e.g. opacifiers, colorants, mill-additions containing titanium compounds; containing zirconium compounds
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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
- C04B41/50—Coating or impregnating, e.g. injection in masonry, partial coating of green or fired ceramics, organic coating compositions for adhering together two concrete elements with inorganic materials
- C04B41/5022—Coating or impregnating, e.g. injection in masonry, partial coating of green or fired ceramics, organic coating compositions for adhering together two concrete elements with inorganic materials with vitreous materials
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- C—CHEMISTRY; METALLURGY
- C04—CEMENTS; CONCRETE; ARTIFICIAL STONE; CERAMICS; REFRACTORIES
- C04B—LIME, MAGNESIA; SLAG; CEMENTS; COMPOSITIONS THEREOF, e.g. MORTARS, CONCRETE OR LIKE BUILDING MATERIALS; ARTIFICIAL STONE; CERAMICS; REFRACTORIES; TREATMENT OF NATURAL STONE
- 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
- C04B41/85—Coating or impregnation with inorganic materials
- C04B41/86—Glazes; Cold glazes
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Abstract
The invention discloses a kind of ceramic glazes of resistance to alkali corrosion, including following component: boron frit, silica flour, spodumene, calcining zinc oxide, calcinated talc powder, kaolin, zirconium silicate, toner etc., preparation method are to stock up according to the mass parts of each component, and ball milling obtains glaze；Sieving obtains glaze slip after glaze goes out ball mill, water and electrolyte is added to adjust the concentration and thixotropy of glaze slip respectively, glazed body is taken to be immersed in glaze slip, glazed body is entered into roller kilns after drying, it is fired under the conditions of 1210-1240 DEG C, obtain the borosilicate glass body of high-compactness, various pigment, which are wrapped in vitreum, to be protected, not only firing temperature is lower, and guarantee compactness of the glaze after firing, realize a kind of high-compactness, high glaze, the complete glaze vitreum of glaze paint pore-free, the Si-O key for protecting glaze glass to be formed is not destroyed, it is resistant to the corrosion of highly basic.
Description
Technical field
The invention belongs to the ceramic glaze fields of inorganic non-metallic material, and in particular to a kind of ceramic glaze of resistance to alkali corrosion
Material and preparation method thereof.
Background technique
The development of ceramics has the achievement of long history and radiance, and the process of porcelain is evolved to from pottery, enriches ceramics
Intension and diversity, practicability, it occupies extremely important position in the culture and technological development history in China.In the modern life
In, people are increasingly dependent on ceramics, and the requirement to ceramic performance is higher and higher.Glaze is to be covered on ceramics, enamel surfaces
Glassy thin layer, have been widely used with preparation ceramics, the products such as enamel, have a long history, applied to every field.
The cleaning of in the 21st century, enamel tableware generallys use mechanization dish-washing machine, and especially America and Europe is for enamel tableware
Acid-proof alkaline require it is higher, it is desirable that domestic ceramics is in 200 turns of dish-washing machines, high speed rotation after being heated with alkaline detergent,
Can continuously wash one month it is non-discolouring, this mode of washing is very big to Ceramic glaze corrosivity.General daily ceramic glaze is equal
Alkali corrosion resistance index for general acid-proofenamel, common acid-resistant glaze is 7g/24hm3, 60 DEG C of weak base below can only be met and be situated between
Therefore the application of matter for 60 DEG C or more of highly basic medium client, needs special alkaline-resisting enamel.
Application No. is the patents of invention of 201711452019.X to disclose a kind of alkaline-resisting enamel, each component mass percent
Are as follows: SiO2: 55%~66%；B2O3: 10%~15%；Li2O:6~8%；Na2O:4~5%；K2O:4~5%；CoO:0.6%
~0.9%；ZrO2: 3%~10%；AL2O3: 3~5%；Clay: 3~5%.But due to the alkali metal oxide of addition compared with
More, final glazed structure has the problems such as micro crystal and more surface pore than more loose, under the corrosion resistance for causing glaze
Drop.
Summary of the invention
The purpose of the present invention is overcome the deficiencies of the prior art and provide a kind of ceramic glaze of resistance to alkali corrosion and its preparation
Method.
The present invention provides a kind of ceramic glazes of resistance to alkali corrosion, including following component and respective parts by weight: boron frit
30-40 parts, 3-15 parts of silica flour, 10-20 parts of spodumene, 5-15 parts of calcining zinc oxide, 3-10 parts of calcinated talc powder, kaolin 5-
20 parts, 5-15 parts of zirconium silicate, 1-10 parts of toner.
Preferably, the toner is one of cobalt black, silver grey and vanadium orchid.
The present invention also provides a kind of preparation methods of the ceramic glaze of resistance to alkali corrosion, comprising the following steps:
1) it stocks up according to each component and each component mass parts, ball milling obtains glaze；
2) glaze is sieved after going out ball mill, obtains glaze slip, and water and electrolyte is added to adjust the concentration and thixotropy of glaze slip respectively；
3) it takes glazed body to be immersed in glaze slip, glazed body is entered into roller kiln burning into maximum sintering temperature 1210-1240 after drying
DEG C to get.
Preferably, ball milling uses high alumina ballstone in step 1), and wherein the mass ratio of raw material, high alumina ballstone and water is 1:1.8:
0.6。
Preferably, the high alumina ballstone includes big ballstone, middle ballstone and small ballstone, the big ballstone, middle ballstone and bead
The mass ratio of stone is 1:2:2.
Preferably, Ball-milling Time is 20-28h in step 1).
Preferably, step 1) the 325 mesh screen residue 0.03-0.06% of glaze fineness
Preferably, the sieve of the step 2) sieving is 160 mesh.
Preferably, the concentration of the step 2) glaze slip is 45-55 Baume degrees.
Preferably, the step 2) electrolyte is sal-ammoniac or sodium tripolyphosphate, and additional amount is total matter of glaze slip and water
The 0.05-0.1% of amount.
Preferably, the drying condition of step 3) is 50-60 DEG C of dry 2-4h.
Preferably, firing period is 4.5-5.5h in step 3).
Preferably, sintering curve is fast burning roller kilns routine sintering curve in step 3), and firing atmosphere is oxidizing atmosphere.
Preferably, finally obtained glazed body glazed thickness is 0.25-0.4mm.
Boron frit: primary raw material is borax, adds partial sodium carbonate, feldspar, quartz, and antiflux obtains, and is main molten
Agent.
Silica flour: main component is silica, and silica is the main component for generating vitreum in glaze, is increased
Quartz content can improve the melting temperature and viscosity of glaze in glaze, reduce the coefficient of expansion of glaze.It is so that glaze has height simultaneously
The main reason for intensity, hardness, ability of wearability and chemical corrosion resistance.
Spodumene: main component Li2O is strong fluxing agent, reduces the melting temperature and viscosity of glaze, increases the refraction of melt
Rate, thus the effects of improving glossiness, reducing the coefficient of expansion, increase the wearability having.
Calcining zinc oxide: keeping glaze meltable, reduces the firing temperature of glaze, increases elasticity, mechanical strength and melting behaviour etc. and makees
With.It is after calcining to reduce the thixotropy of zinc oxide with the main distinction of non-calcining zinc oxide, improves the operating characteristics of glaze.
Calcinated talc powder: promoting middle layer to be formed, and improves hardness of glaze surface, and main ingredient magnesia introduces the corrosion resistant of enhancing glaze
Ability.It is that the layer structure that raw talcum is destroyed after calcining is conducive to improve grinding efficiency and glaze with the main distinction of raw talcum powder
Physical property.
Kaolin: introducing the substances such as aluminium oxide and silica, so that glaze is had suspension and stability, fuses into energy in melt
Si-O key is prevented to be broken, to improve chemical stability.
Zirconium silicate: main ingredient zirconium oxide is introduced into glaze and increases whiteness, and akaline liquid hardly enters after zirconium enters melt,
To not by caustic corrosion.
Toner: adjusting the color of glaze, can obtain the glaze of various colors.
Qin Libang etc. is in " influence of the mixing alkali/alkaline earth metal effect to medium temperature fritted glaze alkali resistance ", in SiO2、
Al2O3、Fe2O3、Li2O、Na2O, on the basis of CaO glaze formula, shadow of research binary alkaline-earth metal CaO, the MgO to frit alkali resistance
It rings, it is indicated that work as Li2O and Na2When the molar ratio of O is 1, the alkali resistance of frit is best, and alkali erosion ratio reaches minimum 1.52%, right
The alkali resistance grade for the glaze answered is 1 grade；CaO is to alkali metal (Li2O+Na2O depressor effect) is obvious, and frit is resistance to after addition CaO
Alkalinity is greatly improved, as CaO/ (Li2O+Na2O) be 1.22 when, frit alkali resistance is best, and alkali erosion ratio reaches minimum
1.03%, the alkali resistance grade of corresponding glaze is 1 grade；When binary alkaline-earth metal mixes, CaO/MgO molar ratio is alkaline-resisting when being 8.2
Property is best, and alkali erosion ratio reaches minimum 1.01%, and the alkali resistance of corresponding glaze is most strong.And pass through the alkali erosion ratio of frit sample
It is found that when being less than or greater than this ratio, alkali erosion ratio increases curve, the alkali resistance decline of frit, the alkali resistance of corresponding glaze
Also can decline.Therefore, those skilled in the art are when preparing glaze, it will usually by CaO, MgO, Li2O and Na2The molar ratio of O controls
In 2.44:0.3:1:1, to improve the alkali resistance of glaze to the maximum extent.
The present invention properly increases the content of MgO by reducing the amount of CaO, then passes through addition B2O3、K2O、ZnO、ZrO2,
And Li2O、Na2O、Al2O3、Fe2O3、SiO2Etc. components, under the conditions of 1210-1240 DEG C generate high-compactness borosilicate
Vitreum, various pigment, which are wrapped in vitreum, to be protected.The alkali resistance of obtained glaze is greatly improved, not only
It realizes resistance to highly basic grade and reaches 0 grade, reached the European Union's cleaning performance of resistance to dish-washing machine standard, while ensure that the gloss of glaze
Degree, thermal stability and hardness of glaze surface.
The main component of boron frit is borax, and borax is white crystalline powder, 1575 DEG C of boiling point, is dissolved in water, density 1.69-
1.72, it is made after frit as flux body, with SiO2、Al2O3It reacts, forms new eutectic, a large amount of boron is molten at this time
Agent and a small amount of SiO2、Al2O3The lesser mobility melt of high temperature viscosity easy to form, ZnO and SiO2Reaction generates willemite
(2ZnO·SiO2), it can form low co-melting body with some flux；Add partial lithiation object again, zirconium compound enter it is conformal after furnace body
At the vitreum of high-compactness, melting can be mixed with various pigment, achieve the purpose that the resistance to alkali corrosion of glaze of the present invention.This
The calcining system of invention is as mass production sample, and without particular/special requirement, firing temperature is lower, and energy consumption is small, is suitble to extensive raw
It produces, while various physical and chemical indexes (thermal stability, the lead cadmium amount of melting out, hardness of glaze surface) can reach national related daily-use fine mark
It is quasi-.
Conventional ceramic glaze can be divided into feldspar glaze, lime glaze, zinc glaze, lithium glaze etc. by main flux.(1) feldspar glaze: with oxygen
Change potassium, sodium oxide molybdena as main flux, addition has been lacked silica, zinc oxide, calcium oxide, magnesia, kaolin etc. and has been formulated, and makes
It is wide with range, but since alkali metal oxide is more, glazed structure is than more loose；(2) lime glaze: being main molten with calcium oxide
Agent, it usually needs addition silica, potassium oxide, sodium oxide molybdena or magnesia, zinc oxide, kaolin etc. are formulated, since calcium contains
Amount is higher, can increase the corrosion resistance of glaze paint, but glaze surface is relatively rough, can with the naked eye tell fine grain flower；(3) zinc glaze:
Using zinc oxide as main flux, small amounts silicon is added, glass powder, kaolin etc. are formulated, and glaze paint is smooth, only makees crystalline glaze
Formula；(4) lithium glaze: using lithia as main flux, adding a small amount of kaolin, silica, potassium oxide etc. and be formulated, expansion system
Number is smaller, uses as heat resisting porcelain.
Above-mentioned several ceramic glazes have the shortcomings that one it is common, be exactly glazed structure than more loose, there is micro crystal and table
The problems such as face pore is more causes the corrosion resistance of glaze to decline.
The present invention properly increases the content of MgO by reducing the amount of CaO, then passes through addition B2O3、K2O、ZnO、ZrO2,
And Li2O、Na2O、Al2O3、Fe2O3、SiO2Etc. components, under the conditions of 1210-1240 DEG C generate high-compactness borosilicate
Vitreum, various pigment, which are wrapped in vitreum, to be protected, and the Si-O key for protecting glaze glass to be formed is not destroyed, so as to
Enough it is resistant to the corrosion of highly basic.
Glaze is divided into low temperature glaze, intermediate glaze and high-temperature glaze by the temperature of firing.
Low temperature glaze fire temperature it is lower, at 1200 DEG C hereinafter, being easy to be completely melt glaze not, cause glaze paint it is coarse,
There is gap, rough, influences beautiful and service performance；The temperature that high-temperature glaze is fired is higher, at 1300 DEG C or more, be easy to cause glaze
Expect penetration, generate bubble, and energy consumption is high, is not suitable for large-scale production.
The present invention is fired using medium temperature, and temperature is 1210-1240 DEG C, and obtained ceramic glaze effect is good, and glaze paint light,
Fine and smooth, pore-free, production energy consumption are low.
The present invention is sieved to glaze, can prevent glaze from bringing impurity in ball mill process out, such as ball milling in ball mill
Medium (i.e. ballstone and ball milling liner) particle and external dust impurity etc., general 160 mesh screen.
Zinc oxide of the invention, magnesia, take calcining zinc oxide and calcined magnesia, reduce the thixotropy of glaze slip,
The operating characteristics of glaze slip is improved, the glazed thickness of green body is between 0.25-0.4mm after glazing.
In production, mainly pass through Ford cup does comparative test to thixotropy, and mainly by practice test, i.e. glaze makes
With easily operated in the process, such as excess glaze, glaze bubble glaze planar defect is not generated.Substantially by glazing operator and quality inspector
It adjusts by rule of thumb.
The boron frit, originates from Hunan Province's Li- ling city, sand-like；
The silica flour originates from Hunan Province's Li- ling city, fine sand shape；
The spodumene originates from Hunan Province's Li- ling city, powdered；
The calcinated talc powder originates from Yulin City on Guangxi, content of magnesia >=30%；
The calcining zinc oxide originates from zhuzhou, hunan province city, zinc oxide content >=98%；
The zirconium silicate originates from Yulin City on Guangxi, zirconia content >=62%；
The kaolin, originates from Longyan；
The toner originates from Zibo City of Shandong Province.
Beneficial effects of the present invention:
The present invention properly increases the content of MgO by reducing the amount of CaO, then passes through addition B2O3、K2O、ZnO、ZrO2,
And Li2O、Na2O、Al2O3、Fe2O3、SiO2Etc. components, under the conditions of 1210-1240 DEG C generate high-compactness borosilicate
Vitreum, various pigment, which are wrapped in vitreum, to be protected, and not only firing temperature is lower, and guarantee glaze firing with
Compactness afterwards realizes that the complete glaze vitreum of a kind of high-compactness, high glaze, glaze paint pore-free, protection glaze glass are formed
Si-O key is not destroyed, and is resistant to the corrosion of highly basic.
Ceramic glaze of the invention not only realizes resistance to highly basic grade and reaches 0 grade, has reached European Union's cleaning of resistance to dish-washing machine
Energy standard, while ensure that glossiness, thermal stability and the hardness of glaze surface of glaze, use scope is wider.
Specific embodiment
The present invention provides a kind of ceramic glazes of resistance to alkali corrosion, including following component and respective parts by weight: boron frit
30-40 parts, 3-15 parts of silica flour, 10-20 parts of spodumene, 5-15 parts of calcining zinc oxide, 3-10 parts of calcinated talc powder, kaolin 5-
20 parts, 5-15 parts of zirconium silicate, 1-10 parts of toner.
Each component Chemical bath deposition such as table 1 in raw material.
Each component Chemical bath deposition in 1 raw material of table
| SiO2 | Al2O3 | Fe2O3 | B2O3 | CaO | MgO | K2O | Na2O | Li2O | ZnO | ZrO2 | |
| Boron frit | 64.57 | 5.52 | 0.1 | 3 | 10 | 3 | 3 | 2 | 1 | ||
| Silica flour | 99.2 | 0.34 | 0.1 | ||||||||
| Spodumene | 68.44 | 23.78 | 0.18 | 0.17 | 0.12 | 0.25 | 0.25 | 6.5 | |||
| Calcining zinc oxide | 98.5 | ||||||||||
| Calcinated talc powder | 63.5 | 0.2 | 0.19 | 4.93 | 30.18 | ||||||
| Kaolin | 50.77 | 33.66 | 0.3 | 0.06 | 0.24 | 3.18 | 0.85 | ||||
| Zirconium silicate | 35.2 | 0.3 | 0.1 | 62.7 |
To make the objectives, technical solutions, and advantages of the present invention clearer, below in conjunction with specific embodiment, to this hair
Bright further description.
Embodiment 1
Take 30 parts of boron frit in parts by weight, 10 parts of silica flour, 15 parts of spodumene, 8 parts of calcining zinc oxide, calcinated talc powder
It 3 parts, 18 parts of kaolin, 12 parts of zirconium silicate, silver grey 4 parts, is added in ball mill, then adds water for ball milling, Central Plains into ball mill
Material: high alumina ballstone: the mass ratio of water is 1:1.8:0.6, big ballstone in high alumina ballstone, middle ballstone, small ballstone mass ratio be 1:
2:2, Ball-milling Time are to obtain the fineness control of glaze for 24 hours, after ball milling in 325 mesh screen residue 0.03-0.06%, and glaze goes out ball mill
160 meshes are crossed afterwards, obtain glaze slip, then measure the concentration of glaze slip, and concentration of glaze slip needed for being determined according to different types adds water tune
The concentration for saving glaze slip is 45 Baume degrees, while the thixotropy that the sodium tripolyphosphate adjusting glaze slip of gross mass 0.05% is added reaches most
Good situation.Glazed body is taken to be immersed in glaze slip, then the dry 3h at 50 DEG C, enters roller kiln burning into maximum temperature for glazed body after drying
It is 1220 DEG C, firing period 5h, sintering curve is fast burning roller kilns routine sintering curve, and firing atmosphere is oxidizing flame atmosphere,
Finally obtained glazed body glazed thickness is 0.25mm.
Embodiment 2
Take 40 parts of boron frit in parts by weight, 10 parts of silica flour, 10 parts of spodumene, 5 parts of calcining zinc oxide, calcinated talc powder
It 5 parts, 20 parts of kaolin, 8 parts of zirconium silicate, 2 parts of cobalt black, is added in ball mill, then adds water for ball milling, Central Plains into ball mill
Material: high alumina ballstone: the mass ratio of water is 1:1.8:0.6, big ballstone in high alumina ballstone, middle ballstone, small ballstone mass ratio be 1:
2:2, Ball-milling Time 28h, the fineness that glaze is obtained after ball milling are controlled in 325 mesh screen residue 0.03-0.06%.Glaze goes out ball mill
180 meshes are crossed afterwards, obtain glaze slip, then measure the concentration of glaze slip, and concentration of glaze slip needed for being determined according to different types adds water tune
The concentration for saving glaze slip is 50 Baume degrees, while the thixotropy that the ammonium chloride adjusting glaze slip of gross mass 0.08% is added reaches best shape
Condition.Glazed body is taken to be immersed in glaze slip, then the dry 2h at 60 DEG C, glazed body enters roller kiln burning into maximum temperature 1230 after drying
DEG C, firing period 5.5h, sintering curve is fast burning roller kilns routine sintering curve, and firing atmosphere is oxidizing atmosphere, final
The glazed body glazed thickness arrived is 0.3mm.
Embodiment 3
Take 35 parts of boron frit in parts by weight, 15 parts of silica flour, 20 parts of spodumene, 15 parts of calcining zinc oxide, calcination of talc
8 parts of powder, 5 parts of kaolin, 5 parts of zirconium silicate, vanadium is 10 parts blue, is added in ball mill, then add water for ball milling, Central Plains into ball mill
Material: high alumina ballstone: the mass ratio of water is 1:1.8:0.6, big ballstone in high alumina ballstone, middle ballstone, small ballstone mass ratio be 1:
2:2, Ball-milling Time 20h, the fineness that glaze is obtained after ball milling are controlled in 325 mesh screen residue 0.03-0.06%.Glaze goes out ball mill
160 meshes are crossed afterwards, obtain glaze slip, then measure the concentration of glaze slip, and concentration of glaze slip needed for being determined according to different types adds water tune
The concentration for saving glaze slip is 55 Baume degrees, while the thixotropy that 0.1% sodium tripolyphosphate adjusting glaze slip is added reaches optimum.
Take glazed body to be immersed in glaze slip, then the dry 4h at 50 DEG C, it is dry after glazed body enter roller kiln burning at, maximum temperature is 1240 DEG C,
Firing period is 4.5h, and sintering curve is fast burning roller kilns routine sintering curve, and firing atmosphere is oxidizing atmosphere, finally obtained
Glazed body glazed thickness is 0.4mm.
Comparative example 1
Take 30 parts of boron frit in parts by weight, 10 parts of silica flour, 15 parts of spodumene, 8 parts of zinc oxide, 3 parts of talcum powder, kaolinite
18 parts of soil, 12 parts of zirconium silicate, silver grey 4 parts, is added in ball mill, subsequent operation is the same as embodiment 1, finally obtained glazed body glaze layer
With a thickness of 0.25mm.
Comparative example 2
Take 30 parts of boron frit in parts by weight, 10 parts of silica flour, 15 parts of spodumene, 8 parts of calcining zinc oxide, calcinated talc powder
It 3 parts, 18 parts of kaolin, 12 parts of zirconium silicate, silver grey 4 parts, is added in ball mill, the subsequent operation for preparing glaze slip is the same as embodiment 1.
Glazed body is taken to be immersed in glaze slip, then the dry 3h at 50 DEG C, enters roller kiln burning into maximum temperature 1180 for the glazed body after drying
DEG C, firing period 5h, sintering curve is fast burning roller kilns routine sintering curve, and firing atmosphere is oxidizing atmosphere, is finally obtained
Glazed body glazed thickness be 0.25mm.
Comparative example 3
Take 30 parts of boron frit in parts by weight, 10 parts of silica flour, 15 parts of spodumene, 8 parts of calcining zinc oxide, calcinated talc powder
It 3 parts, 18 parts of kaolin, 12 parts of zirconium silicate, silver grey 4 parts, is added in ball mill, the subsequent operation for preparing glaze slip is the same as embodiment 1.
Glazed body is taken to be immersed in glaze slip, then the dry 3h at 50 DEG C, enters roller kiln burning into maximum temperature 1300 for the glazed body after drying
DEG C, firing period 5h, sintering curve is fast burning roller kilns routine sintering curve, and firing atmosphere is oxidizing atmosphere, is finally obtained
Glazed body glazed thickness be 0.25mm.
Comparative example 4
Using the frit in " influence of the mixing alkali/alkaline earth metal effect to medium temperature fritted glaze alkali resistance " such as Qin Libang
G7, additional 5% kaolin prepare fritted glaze according to its process flow and technological parameter.
The properties of the obtained ceramic glaze of embodiment 1-3 and comparative example 1-4 are compared, the results are shown in Table 2 and table
3.Wherein:
Alkali resistance test: referring to BS EN 12875-4:2006 standard, in the environment of temperature is 75 ± 1 DEG C, by sample
It is immersed in 0.5% special alkaline detergent solution, is taken out after 16h, dried with hot water injection, then with clean rag.Then it updates
The sample just taken out is placed into wherein, sample is taken out after 16h by the cleaning solution in test container, is cleaned and is dried, and is observed
The appearance corrosion phenomenon of sample, makes its assessment grade, the results are shown in Table 2；
Glossiness: being detected by color difference meter, the results are shown in Table 3；
Thermal stability: using heating chilling method, ceramic glaze product being placed in the electric furnace for being warming up to 180 DEG C,
30min is kept the temperature, ceramic glaze product is put into rapidly 10min in 20 DEG C of water later, product is taken out and is dried, check for splitting
It line and bursts, the results are shown in Table 3；
Hardness of glaze surface: delineating product surface with metal cutlery, sees glaze paint whether there is or not trace, damage, steel edge used is not
Family name's hardness the results are shown in Table 3 between 6-7.
The alkali resistance test result of 2 ceramic glaze of table
| Cosmetic variation | Rank | |
| Embodiment 1 | It is unchanged | 0 |
| Embodiment 2 | It is unchanged | 0 |
| Embodiment 3 | It is unchanged | 0 |
| Comparative example 1 | Half mute, lighter | 2 |
| Comparative example 2 | Lighter | 1 |
| Comparative example 3 | Lighter | 1 |
| Comparative example 4 | It is unchanged | 1 |
The performance of 3 ceramic glaze of table compares
| Glossiness (GU) | Thermal stability | Hardness of glaze surface | |
| Embodiment 1 | 82 | Flawless | No marking |
| Embodiment 2 | 85 | Flawless | No marking |
| Embodiment 3 | 83 | Flawless | No marking |
| Comparative example 1 | 77 | Slight crackle | No marking |
| Comparative example 2 | 69 | Flawless | There is shadow scratch |
| Comparative example 3 | 76 | Slight crackle | No marking |
| Comparative example 4 | 78 | Slight crackle | There is shadow scratch |
Data can be seen that the ceramic glaze comprehensive performance for the resistance to alkali corrosion that embodiment 1-3 is obtained from table 2 and table 3
Excellent, alkali resistance is higher, not only realizes resistance to highly basic grade and reaches 0 grade, has reached the European Union's cleaning performance of resistance to dish-washing machine standard, together
When ensure that glossiness, thermal stability and the hardness of glaze surface of glaze.Illustrate that the present invention passes through the amount for reducing CaO, and suitably mentions
The content of high MgO, then pass through addition B2O3、K2O, calcining zinc oxide and Li2O、Na2O、Al2O3、Fe2O3、SiO2Etc. components,
It is burnt under the conditions of 1210-1240 DEG C, as a result increases the density of ceramic glaze, reduced the fracture tendency of Si-O key, add
A small amount of zirconium dioxide enhances the ability of the resistance to highly basic of ceramic glaze so that finally obtained ceramic glaze have high-compactness,
High glaze, glaze paint pore-free, and there is excellent resistance to alkali corrosion performance.
Through embodiment 1 compared with comparative example 1, it is known that the present invention uses calcinated talc powder and calcining zinc oxide, reduces
The thixotropy of glaze slip, improves the operating characteristics of glaze slip, does not generate such as excess glaze, glaze bubble glaze planar defect, and alkaline-resisting higher grade,
Higher glossiness and good thermal stability are macroscopically shown, while color change will not occur for immersion in strong base solution
Change, there is excellent resistance to alkali corrosion.
By comparing embodiment 1 and comparative example 2 and comparative example 3, the present invention is fired in 1210-1240 DEG C of medium temperature, is obtained
The alkaline-resisting higher grade of ceramic glaze, glaze paint is bright, fine and smooth, pore-free, shows higher glossiness, excellent resistance to alkali corrosion
And thermal stability and higher hardness.
By comparing embodiment 1 and comparative example 4, what the formula and preparation method of ceramic glaze through the invention obtained
Ceramic glaze not only realizes resistance to highly basic grade and reaches 0 grade, has reached the European Union's cleaning performance of resistance to dish-washing machine standard, while ensure that glaze
Glossiness, thermal stability and the hardness of glaze surface of material.This is because other than being added to small amounts zirconium to improve alkali resistance, this
Invention properly increases the content of MgO by reducing the amount of CaO, then passes through addition B2O3、K2O、ZnO、ZrO2And Li2O、
Na2O、Al2O3、Fe2O3、SiO2Etc. components, under the conditions of 1210-1240 DEG C generate high-compactness borosilicate glass body, respectively
Kind of pigment, which is wrapped in vitreum, to be protected, and guarantees compactness of the glaze after firing, realizes a kind of high-compactness, height
The integral ceramic glaze of gloss, glaze paint pore-free, the Si-O key for protecting ceramic glaze to be formed are not destroyed, and are resistant to highly basic
Corrosion, while there is superior thermal stability and higher hardness.
Claims (9)
1. a kind of ceramic glaze of resistance to alkali corrosion, which is characterized in that including following component and respective parts by weight: boron frit 30-
40 parts, 3-15 parts of silica flour, 10-20 parts of spodumene, 5-15 parts of calcining zinc oxide, 3-10 parts of calcinated talc powder, kaolin 5-20
Part, 5-15 parts of zirconium silicate, 1-10 parts of toner.
2. the ceramic glaze of resistance to alkali corrosion as described in claim 1, which is characterized in that the toner is cobalt black, it is silver grey and
One of vanadium orchid.
3. a kind of preparation method of the ceramic glaze of resistance to alkali corrosion as claimed in claim 1 or 2, which is characterized in that including
Following steps:
1) it stocks up according to each component and each component mass parts, ball milling obtains glaze；
2) glaze is sieved after going out ball mill, obtains glaze slip, and water and electrolyte is added to adjust the concentration and thixotropy of glaze slip respectively；
3) take glazed body to be immersed in glaze slip, it is dry after by glazed body enter roller kiln burning at, maximum temperature be 1210-1240 DEG C to get.
4. the preparation method of the ceramic glaze of resistance to alkali corrosion as claimed in claim 3, which is characterized in that the step 1) ball
Mill uses high alumina ballstone, wherein raw material: high alumina ballstone: the mass ratio of water is 1:1.8:0.6.
5. the preparation method of the ceramic glaze of resistance to alkali corrosion as described in claim 3 or 4, which is characterized in that step 1) institute
State 325 mesh screen residue 0.03-0.06% of glaze fineness.
6. the preparation method of the ceramic glaze of resistance to alkali corrosion as described in claim 3 or 4, which is characterized in that step 2) institute
The sieve for stating sieving is 160 mesh.
7. the preparation method of the ceramic glaze of resistance to alkali corrosion as described in claim 3 or 4, which is characterized in that step 2) institute
The concentration for stating glaze slip is 45-55 Baume degrees.
8. the preparation method of the ceramic glaze of resistance to alkali corrosion as described in claim 3 or 4, which is characterized in that step 2) institute
Stating electrolyte is sal-ammoniac or sodium tripolyphosphate, and additional amount is the 0.05-0.1% of the gross mass of glaze slip and water.
9. the preparation method of the ceramic glaze of resistance to alkali corrosion as described in claim 3 or 4, which is characterized in that step 3) institute
The period for stating firing is 4.5-5.5h.
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| CN109734314A (en) * | 2019-03-06 | 2019-05-10 | 盐城工业职业技术学院 | A kind of acid and alkali-resistance ceramic glaze and preparation method thereof |
| CN109851224A (en) * | 2019-03-28 | 2019-06-07 | 潮州市广嘉陶瓷制作有限公司 | A kind of unleaded glaze of low-temperature low-alkali metal and its preparation process |
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