CN110483014A - Easy fired environmental protection blank, enviroment protective ceramic green body and preparation method thereof - Google Patents
Easy fired environmental protection blank, enviroment protective ceramic green body and preparation method thereof Download PDFInfo
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Abstract
The invention discloses a kind of easy fired environmental protection blanks, enviroment protective ceramic green body and preparation method thereof.The present invention is optimized by the formula to ceramic batch, makes that ceramic body shrinking percentage obtained is smaller, even density；On this basis, invention further provides a kind of preparation method of easy fired enviroment protective ceramic green body, 1) raw material is mixed according to ceramic batch formula described in above-mentioned technical proposal, obtain dry-pressing powder；2), that the dry-pressing powder is dry-pressing formed, obtain green compact；3), the green compact are pre-sintered, obtain crude green body；3) crude green body, is subjected to secondary low-temperature sintering, obtains ceramic body.The ceramic body shrinking percentage 5% being prepared, water absorption rate 2%, bulk density 2.9 meet the needs of domestic ceramics.
Description
Technical field
The invention belongs to technical field of ceramic material, and in particular to a kind of easy fired environmental protection blank, enviroment protective ceramic green body
And preparation method thereof.
Background technique
The traditional concept of ceramics refers to all using Inorganic nonmetal minerals such as clays as the artificial industrial products of raw material.It is wrapped
Include the mixture clay or containing clay through mixing, molding, calcining and made of various products.The field of applications in ceramics
It is very extensive, but the characteristic requirements of the ceramic of different field application are also different.The demand of domestic ceramics at present
It rises year by year, with the improvement of living standards, demand of the people to high performance ceramic ware for daily use is also higher and higher, high-performance
Ceramic just need that the shrinking percentage of ceramic body is smaller, even density, but the ceramic body sintering after-contraction produced at present
Rate is about 16% or so, and the Density Distribution of ceramic body is uneven.And the raw material components of existing ceramic body are excessive, ingredient
Complexity, therefore in sintering procedure, need very high firing temperature to can be only achieved technique requirement, energy consumption is high, and cost is also high, and burns
The ceramic performance of system still has to be hoisted.
Summary of the invention
The purpose of the present invention is to solve prior art production ceramic body sintering post-shrinkage ratio height, Density Distribution is uneven
And sintering temperature is excessively high, the high disadvantage of energy consumption, provides a kind of easy fired environmental protection blank, enviroment protective ceramic green body and its preparation side
Method.
Realize the technical scheme is that
A kind of easy fired environmental protection blank, including following components in percentage by weight: porcelain stone (low temperature stone) 10~
15%, lime stone (calcic) 5~10%, dolomite 10~15%, talcum 5~10%, pyrophillite 5~10%, clay 10~
15%, bentonite 1~5%, kaolin 35~40%.
Further, easy fired environmental protection blank of the present invention, including following components in percentage by weight:
Porcelain stone (low temperature stone) 10%, lime stone (calcic) 5%, dolomite 13%, talcum 8%, pyrophillite 10%, clay 12%, swelling
Soil 3%, kaolin 39%.
It is by above-mentioned easy fired environmental protection blank formulation system the present invention also provides a kind of easy fired enviroment protective ceramic green body
At.
Further, ceramic body of the present invention further includes zirconium oxide and aluminium oxide, and the two mass ratio is 1:1, oxygen
The additional amount for changing zirconium and aluminium oxide is the 10~15% of former blank gross mass.
Further, ceramic body of the present invention further includes sintering aid titanium oxide, adhesive polyethylene glycol, silane idol
Join agent tetramethoxy-silicane, wherein the additional amount of titanium oxide is the 1~5% of former blank gross mass, and the additional amount of ethylene glycol is original
The 20~35% of blank gross mass, the additional amount of tetramethoxy-silicane are the 10~15% of former blank gross mass.
The present invention is optimized by the formula to ceramic batch, using kaolin as primary raw material, adds porcelain stone, stone
Lime stone, dolomite, talcum, pyrophillite, clay, bentonite matrix, kaolin have plasticity, caking property, certain drying strong
The properties such as whiteness after degree, agglutinating property and burning, bentonite is met water volume during making pug and can be expanded, thus phase
To the volume for increasing pug, the specific gravity of raw material is reduced, is laid the foundation for firing light ceramics, clay itself has excellent glue
Property, the once-firing for ceramics lays the foundation；Dolomite can be used as pore-foaming agent, improves the porosity of ceramics, expands specific surface area；
The coefficient of expansion of pyrophyllite is smaller, the hygral expansion with good thermal stability and very little；
In addition, adding zirconium oxide and aluminium oxide in the manufacturing process of ceramic body；Zirconia material itself has
The excellent physical and chemical performances such as high rigidity, high intensity, high tenacity, high wearability and chemical corrosion resistance, and aluminium oxide itself
Also have the excellent performances such as high mechanical strength, hardness are big, high-temperature insulation resistance is high, chemical corrosion resistance and thermal conductivity are good.
Zirconium oxide and aluminium oxide can be used in ceramic field, but its simple compound composition can not obtain ceramic material of good performance
Material.
The present invention is on the basis of zirconium oxide and aluminium oxide performance, compound addition sintering aid titanium oxide, the poly- second two of adhesive
Alcohol, silane coupling agent, the ceramic body water absorption rate 2% that above-mentioned material and zirconium oxide and alumina composite are prepared, volume
Density 2.9%, function admirable.
The present invention also provides the preparation methods of above-mentioned easy fired enviroment protective ceramic green body, comprising the following steps:
Step 1, based on following weight percent, porcelain stone (low temperature stone) 10~15%, lime stone (calcic) 5~10% is white
Marble 10~15%, talcum 5~10%, pyrophillite 5~10%, clay 10~15%, bentonite 1~5%, kaolin 35~
40%, above-mentioned blank is poured into ball milling 12~24 hours in ball mill, 200-300 mesh is crossed, obtains material A；
Step 2, by mass ratio be 1:1 zirconium oxide and alumina silicon after mixing, crush, cross 100-200 mesh, obtain
To material B；
Step 3, material A is sent into ball milling 10-12h, revolving speed 50-1000r/min in ball mill, material B, oxygen is then added
Change titanium, polyethylene glycol, tetramethoxy-silicane, continues ball milling 10-15h, obtain mixed powder；
Step 4, the mixed powder in step 3 is placed into compression moulding in mold and obtains green compact, then by it in 800~
900 DEG C carry out carrying out pre-burning 4-5h, obtain crude green body,
Step 5, crude green body is obtained into ceramic body in 1000-1100 DEG C of progress high temperature sintering 10-12h.
Compared with prior art, the present invention its remarkable advantage is:
The present invention is optimized by the formula to ceramic batch, makes that ceramic body shrinking percentage obtained is smaller, density is equal
It is even；On this basis, invention further provides a kind of preparation method of easy fired enviroment protective ceramic green body, 1) according to above-mentioned
Ceramic batch formula described in technical solution mixes raw material, obtains dry-pressing powder；It is 2), that the dry-pressing powder is dry-pressing formed,
Obtain green compact；3), the green compact are pre-sintered, obtain crude green body；3) crude green body, is subjected to secondary low-temperature sintering, is obtained
Ceramic body.The ceramic body shrinking percentage 5% being prepared, water absorption rate 2%, bulk density 2.9 meet the need of domestic ceramics
It asks.
Specific embodiment
In order to keep the above objects, features, and advantages of the disclosure more obvious and easy to understand, combined with specific embodiments below
The specific embodiment of the disclosure is described in detail.
Many details are explained in the following description in order to fully understand the disclosure, but the disclosure can be with
Implemented using other than the one described here other way, those skilled in the art can be without prejudice to disclosure intension
In the case of do similar popularization, therefore the disclosure is not limited by the specific embodiments disclosed below.
Embodiment 1
A kind of easy fired environmental protection blank, including following components in percentage by weight: porcelain stone (low temperature stone) 15%,
Lime stone (calcic) 5%, dolomite 10%, talcum 10%, pyrophillite 8%, clay 15%, bentonite 2%, kaolin 35%.
The present embodiment also provides a kind of preparation method of easy fired enviroment protective ceramic green body, comprising the following steps:
Step 1, based on following weight percent, porcelain stone (low temperature stone) 15%, lime stone (calcic) 5%, dolomite 10%,
Above-mentioned blank is poured into ball milling 12 in ball mill by talcum 10%, pyrophillite 8%, clay 15%, bentonite 2%, kaolin 35%
Hour, 200 meshes are crossed, material A is obtained；
Step 2, by mass ratio be 1:1 zirconium oxide and alumina silicon after mixing, crush, cross 200 meshes, obtain object
Expect B；Wherein, the additional amount of zirconium oxide and aluminium oxide is the 10~15% of former blank gross mass；
Step 3, by material A be sent into ball mill in ball milling 10h, revolving speed 1000r/min, then be added material B, titanium oxide,
Polyethylene glycol, tetramethoxy-silicane continue ball milling 10h, obtain mixed powder；Wherein, the additional amount of titanium oxide is that blank material is total
The 1~5% of quality, the additional amount of ethylene glycol are the 20~35% of former blank gross mass, and the additional amount of tetramethoxy-silicane is original
The 10~15% of blank gross mass；
Step 4, by the mixed powder in step 3 be placed into compression moulding in mold obtain green compact (can be made into outer diameter 10cm,
Internal diameter 8cm, the cylindrical body of high 8cm), then it is carried out to carry out pre-burning 4h in 800 DEG C, obtains crude green body；
Step 5, crude green body is obtained into ceramic body in 1000 DEG C of progress high temperature sintering 10h.
The ceramic body being prepared into after high temperature sintering is through measuring outer diameter 8.9cm, internal diameter 7.5cm, high 7.2cm, shrinking percentage
11.5%.
Embodiment 2
A kind of easy fired environmental protection blank, including following components in percentage by weight: porcelain stone (low temperature stone) 15%,
Lime stone (calcic) 5%, dolomite 12%, talcum 8%, pyrophillite 8%, clay 15%, bentonite 1%, kaolin 36%.
The present embodiment also provides a kind of preparation method of easy fired enviroment protective ceramic green body, comprising the following steps:
Step 1, based on following weight percent, porcelain stone (low temperature stone) 15%, lime stone (calcic) 5%, dolomite 12%,
Above-mentioned blank is poured into ball milling 12 in ball mill by talcum 8%, pyrophillite 8%, clay 15%, bentonite 1%, kaolin 36%
~24 hours, 200 meshes are crossed, material A is obtained；
Step 2, by mass ratio be 1:1 zirconium oxide and alumina silicon after mixing, crush, sieve with 100 mesh sieve, obtain object
Expect B；Wherein, the additional amount of zirconium oxide and aluminium oxide is the 10~15% of former blank gross mass；
Step 3, material A is sent into ball milling 12h, revolving speed 500r/min in ball mill, material B is then added, titanium oxide, gathers
Ethylene glycol, tetramethoxy-silicane continue ball milling 15h, obtain mixed powder；Wherein, the additional amount of titanium oxide is the total matter of blank material
The 1~5% of amount, the additional amount of ethylene glycol are the 20~35% of former blank gross mass, and the additional amount of tetramethoxy-silicane is blank
Expect the 10~15% of gross mass；
Step 4, by the mixed powder in step 3 be placed into compression moulding in mold obtain green compact (can be made into outer diameter 10cm,
Internal diameter 8cm, the cylindrical body of high 8cm), then it is carried out to carry out pre-burning 4-5h in 900 DEG C, obtains crude green body,
Step 5, crude green body is obtained into ceramic body in 1000 DEG C of progress high temperature sintering 10h.
The ceramic body being prepared into after high temperature sintering is through measuring outer diameter 8.8cm, internal diameter 7.4cm, high 7.2cm, shrinking percentage
12.2%.
Embodiment 3
A kind of easy fired environmental protection blank, including following components in percentage by weight: porcelain stone (low temperature stone) 10%,
Lime stone (calcic) 5%, dolomite 15%, talcum 9%, pyrophillite 10%, clay 11%, bentonite 5%, kaolin 35%.
The present embodiment also provides a kind of preparation method of easy fired enviroment protective ceramic green body, comprising the following steps:
Step 1, based on following weight percent, porcelain stone (low temperature stone) 10%, lime stone (calcic) 5%, dolomite 15%,
Above-mentioned blank is poured into ball milling 24 in ball mill by talcum 9%, pyrophillite 10%, clay 11%, bentonite 5%, kaolin 35%
Hour, 300 meshes are crossed, material A is obtained；
Step 2, by mass ratio be 1:1 zirconium oxide and alumina silicon after mixing, crush, cross 200 meshes, obtain object
Expect B；Wherein, the additional amount of zirconium oxide and aluminium oxide is the 10~15% of former blank gross mass；
Step 3, material A is sent into ball milling 11h, revolving speed 500r/min in ball mill, material B is then added, titanium oxide, gathers
Ethylene glycol, tetramethoxy-silicane continue ball milling 15h, obtain mixed powder；Wherein, the additional amount of titanium oxide is the total matter of blank material
The 1~5% of amount, the additional amount of ethylene glycol are the 20~35% of former blank gross mass, and the additional amount of tetramethoxy-silicane is blank
Expect the 10~15% of gross mass；
Step 4, by the mixed powder in step 3 be placed into compression moulding in mold obtain green compact (can be made into outer diameter 10cm,
Internal diameter 8cm, the cylindrical body of high 8cm), then it is carried out to carry out pre-burning 5h in 850 DEG C, obtains crude green body,
Step 5, crude green body is obtained into ceramic body in 1100 DEG C of progress high temperature sintering 10h.
The ceramic body being prepared into after high temperature sintering is through measuring outer diameter 9.2cm, internal diameter 7.6cm, high 7.4cm, shrinking percentage
8.3%.
Embodiment 4
A kind of easy fired environmental protection blank, including following components in percentage by weight: porcelain stone (low temperature stone) 10%,
Lime stone (calcic) 5%, dolomite 14%, talcum 10%, pyrophillite 10%, clay 10%, bentonite 1%, kaolin 40%.
The present embodiment also provides a kind of preparation method of easy fired enviroment protective ceramic green body, comprising the following steps:
Step 1, based on following weight percent, porcelain stone (low temperature stone) 10%, lime stone (calcic) 5%, dolomite 14%,
Above-mentioned blank is poured into ball milling in ball mill by talcum 10%, pyrophillite 10%, clay 10%, bentonite 1%, kaolin 40%
20 hours, 300 meshes are crossed, material A is obtained；
Step 2, by mass ratio be 1:1 zirconium oxide and alumina silicon after mixing, crush, cross 200 meshes, obtain object
Expect B；Wherein, the additional amount of zirconium oxide and aluminium oxide is the 10~15% of former blank gross mass；
Step 3, material A is sent into ball milling 12h, revolving speed 800r/min in ball mill, material B is then added, titanium oxide, gathers
Ethylene glycol, tetramethoxy-silicane continue ball milling 15h, obtain mixed powder；Wherein, the additional amount of titanium oxide is the total matter of blank material
The 1~5% of amount, the additional amount of ethylene glycol are the 20~35% of former blank gross mass, and the additional amount of tetramethoxy-silicane is blank
Expect the 10~15% of gross mass；
Step 4, by the mixed powder in step 3 be placed into compression moulding in mold obtain green compact (can be made into outer diameter 10cm,
Internal diameter 8cm, the cylindrical body of high 8cm), then it is carried out to carry out pre-burning 4h in 850 DEG C, obtains crude green body,
Step 5, crude green body is obtained into ceramic body in 1000 DEG C of progress high temperature sintering 10h.
The ceramic body being prepared into after high temperature sintering is through measuring outer diameter 9.3cm, internal diameter 7.6cm, high 7.5cm, shrinking percentage
7.5%.
Embodiment 5
A kind of easy fired environmental protection blank, including following components in percentage by weight: porcelain stone (low temperature stone) 10%,
Lime stone (calcic) 5%, dolomite 13%, talcum 8%, pyrophillite 10%, clay 12%, bentonite 3%, kaolin 39%.
The present embodiment also provides a kind of preparation method of easy fired enviroment protective ceramic green body, comprising the following steps:
Step 1, based on following weight percent, porcelain stone (low temperature stone) 10%, lime stone (calcic) 5%, dolomite 13%,
Above-mentioned blank is poured into ball milling 24 in ball mill by talcum 8%, pyrophillite 10%, clay 12%, bentonite 3%, kaolin 39%
Hour, 300 meshes are crossed, material A is obtained；
Step 2, by mass ratio be 1:1 zirconium oxide and alumina silicon after mixing, crush, cross 200 meshes, obtain object
Expect B；Wherein, the additional amount of zirconium oxide and aluminium oxide is the 10~15% of former blank gross mass；
Step 3, by material A be sent into ball mill in ball milling 10h, revolving speed 1000r/min, then be added material B, titanium oxide,
Polyethylene glycol, tetramethoxy-silicane continue ball milling 15h, obtain mixed powder；Wherein, the additional amount of titanium oxide is that blank material is total
The 1~5% of quality, the additional amount of ethylene glycol are the 20~35% of former blank gross mass, and the additional amount of tetramethoxy-silicane is original
The 10~15% of blank gross mass；
Step 4, by the mixed powder in step 3 be placed into compression moulding in mold obtain green compact (can be made into outer diameter 10cm,
Internal diameter 8cm, the cylindrical body of high 8cm), then it is carried out to carry out pre-burning 5h in 900 DEG C, obtains crude green body,
Step 5, crude green body is obtained into ceramic body in 1080 DEG C of progress high temperature sintering 10h.
The ceramic body being prepared into after high temperature sintering is through measuring outer diameter 9.5cm, internal diameter 7.6cm, high 7.8cm, shrinking percentage
5%.
Performance test:
In addition, the ceramic body of Examples 1 to 5 preparation is further carried out water absorption rate by the present invention, bulk density is tested, tool
Body method is as follows:
Step 1, outwash specimen surface dust, number, is put into Electric heat oven, and drying to constant weight at 1100 DEG C, and in
Cooled to room temperature in drier.Sample mass is weighed, 0.01g is accurate to.
Step 2, sample is put into container, is placed in vacuum evacuation device, be not less than 97% condition in relative degree of vacuum
Under, 5min is vacuumized, stops pumping, container is taken out, stands 30min in air, is saturated sample sufficiently.
Step 3, before actually weighing, it will install and water-immersed hanging basket hung on balance, balance is made to be in balance
Position.When weighing, saturated sample is moved to rapidly in carry potential overflow tubular container room temperature immersion liquid, it, will after immersion liquid floods sample completely
Sample is placed on the hook for hanging over balance in hanging basket and weighs, and obtains the apparent mass of saturated sample, is accurate to 0.01g.Hanging basket is in water
In depth and setting-out it is identical when weighing.
Apparent mass refers to that the quality of saturated sample subtracts the quality for the liquid being excluded, that is, saturated sample is suspended on
Quality in liquid.
Step 4, sample is taken out from immersion liquid, with the towel for being saturated liquid, carefully wipes the extra liquid of specimen surface
It drips (but the liquid in stomata cannot be sucked out) and weighs the aerial quality of saturated sample rapidly, be accurate to 0.01g.Each sample
The entire wiping water of product and weighing operation should be completed in 1min.
Step 5, the density of measurement steeping liq used under experimental temperature, can be used hydrostatic weighing method or liquid
Hydrometer method is accurate to 0.001g.
The water absorption rate of ceramic body, bulk density is calculated according to the calculation formula in standard QB/T 1642-2012,
It is as shown in the table:
1 test result of table
Claims (6)
1. a kind of easy fired environmental protection blank, it is characterised in that: including following components in percentage by weight:
Porcelain stone 10 ~ 15%, lime stone 5 ~ 10%, dolomite 10 ~ 15%, talcum 5 ~ 10%, pyrophillite 5 ~ 10%, clay 10 ~ 15%,
Bentonite 1 ~ 5%, kaolin 35 ~ 40%.
2. easy fired environmental protection blank according to claim 1, it is characterised in that: including in percentage by weight with
Lower component:
Porcelain stone 10%, lime stone 5%, dolomite 13%, talcum 8%, pyrophillite 10%, clay 12%, bentonite 3%, kaolin
39%。
3. a kind of easy fired enviroment protective ceramic green body, by the described in any item easy fired environmental protection blank formulations of claims 1 or 2
It is made.
4. easy fired enviroment protective ceramic green body according to claim 3, it is characterised in that: the ceramic body further includes oxygen
Change zirconium and aluminium oxide, the two mass ratio is 1:1, and the additional amount of zirconium oxide and aluminium oxide is the 10 ~ 15% of former blank gross mass.
5. easy fired enviroment protective ceramic green body according to claim 4, it is characterised in that: the ceramic body further includes helping
Agent titanium oxide, adhesive polyethylene glycol, silane coupling agent tetramethoxy-silicane are burnt, wherein the additional amount of titanium oxide is that blank material is total
The 1 ~ 5% of quality, the additional amount of ethylene glycol are the 20 ~ 35% of former blank gross mass, and the additional amount of tetramethoxy-silicane is blank material
The 10 ~ 15% of gross mass.
6. the preparation method of easy fired enviroment protective ceramic green body described in a kind of claim 5, it is characterised in that: including following step
It is rapid:
Step 1, based on following weight percent, porcelain stone 10 ~ 15%, lime stone 5 ~ 10%, dolomite 10 ~ 15%, talcum 5 ~ 10%,
Above-mentioned blank is poured into ball milling in ball mill by pyrophillite 5 ~ 10%, clay 10 ~ 15%, bentonite 1 ~ 5%, kaolin 35 ~ 40%
12 ~ 24 hours, 200-300 mesh is crossed, material A is obtained；
Step 2, by mass ratio be 1:1 zirconium oxide and alumina silicon after mixing, crush, cross 100-200 mesh, obtain object
Expect B；
Step 3, material A is sent into ball milling 10-12h, revolving speed 50-1000r/min in ball mill, material B, oxidation is then added
Titanium, polyethylene glycol, tetramethoxy-silicane continue ball milling 10-15h, obtain mixed powder；
Step 4, the mixed powder in step 3 is placed into compression moulding in mold and obtains green compact, then by it in 800 ~ 900 DEG C
It carries out carrying out pre-burning 4-5h, obtains crude green body,
Step 5, crude green body is obtained into ceramic body in 1000-1100 DEG C of progress high temperature sintering 10-12h.
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