CN107117920A - A kind of preparation method of corrosion-resistant long-life gypsum mold - Google Patents
A kind of preparation method of corrosion-resistant long-life gypsum mold Download PDFInfo
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- CN107117920A CN107117920A CN201710262743.XA CN201710262743A CN107117920A CN 107117920 A CN107117920 A CN 107117920A CN 201710262743 A CN201710262743 A CN 201710262743A CN 107117920 A CN107117920 A CN 107117920A
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- gypsum
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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
- C04B28/00—Compositions of mortars, concrete or artificial stone, containing inorganic binders or the reaction product of an inorganic and an organic binder, e.g. polycarboxylate cements
- C04B28/14—Compositions of mortars, concrete or artificial stone, containing inorganic binders or the reaction product of an inorganic and an organic binder, e.g. polycarboxylate cements containing calcium sulfate cements
- C04B28/145—Calcium sulfate hemi-hydrate with a specific crystal form
- C04B28/147—Calcium sulfate hemi-hydrate with a specific crystal form beta-hemihydrate
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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
- C04B28/00—Compositions of mortars, concrete or artificial stone, containing inorganic binders or the reaction product of an inorganic and an organic binder, e.g. polycarboxylate cements
- C04B28/14—Compositions of mortars, concrete or artificial stone, containing inorganic binders or the reaction product of an inorganic and an organic binder, e.g. polycarboxylate cements containing calcium sulfate cements
- C04B28/145—Calcium sulfate hemi-hydrate with a specific crystal form
- C04B28/146—Calcium sulfate hemi-hydrate with a specific crystal form alpha-hemihydrate
-
- 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
- C04B2201/00—Mortars, concrete or artificial stone characterised by specific physical values
- C04B2201/50—Mortars, concrete or artificial stone characterised by specific physical values for the mechanical strength
-
- Y—GENERAL 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
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02W—CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO WASTEWATER TREATMENT OR WASTE MANAGEMENT
- Y02W30/00—Technologies for solid waste management
- Y02W30/50—Reuse, recycling or recovery technologies
- Y02W30/91—Use of waste materials as fillers for mortars or concrete
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- Chemical & Material Sciences (AREA)
- Engineering & Computer Science (AREA)
- Ceramic Engineering (AREA)
- Crystallography & Structural Chemistry (AREA)
- Chemical Kinetics & Catalysis (AREA)
- Inorganic Chemistry (AREA)
- Materials Engineering (AREA)
- Structural Engineering (AREA)
- Organic Chemistry (AREA)
- Processing Of Solid Wastes (AREA)
Abstract
The invention discloses a kind of preparation method of corrosion-resistant long-life gypsum mold.This method is additive using the inorganic solid waste including flyash, building castoff, ceramic waste residue or clinker, is aided with polyvinyl alcohol or polycarboxylic acids sodium cellulosate, prepares corrosion-resistant long-life gypsum mold using α types and beta-type semi-hydrated gypsum as raw material.Gypsum mold prepared by the present invention has the advantages that water absorption rate is high, easy to make, intensity is high, service life length, low corrosion rate, the gypsum mold access times of preparation are up to 80 100 times, service life improves more than 60% than traditional gypsum mold, can be widely applied to the numerous areas such as sanitary ceramics；The preparation method of the present invention, which is employed, includes the inorganic additive of flyash, building castoff, ceramic waste residue or clinker, consumes inorganic solid waste, reduces the pressure of environment.
Description
Technical field
The present invention relates to the preparation method of long-life gypsum mold, more particularly to a kind of corrosion-resistant long-life gypsum mold
Preparation method.
Background technology
Gypsum mold is widely used in the injection forming of ceramics because production cost is low, processability is excellent.As specially
The preparation method of sharp a kind of gypsum mold raw materials of CN103086738A and gypsum mold, patent utilization α types and beta-type semi-hydrated gypsum
And foaming agent, reinforcing agent prepare gypsum mold, wherein foaming agent is selected from azo diformazan phthalein amine, lauryl sodium sulfate and fatty alcohol
One or more in polyethenoxy ether sodium sulfate, have the disadvantage that these foaming agent costs are higher, and make more difficult；Patent
Gypsum mold after shaping is strengthened and polished by a kind of preparation methods of gypsum plastics suction mould of CN104960119A, the patent
Processing, forms one layer of reinforcing Rotating fields, the service life of gypsum is improved whereby, has the disadvantage that technique is complex, enhanced coating system
Make cost high；Patent CN105503115A is a kind of for sulphur gypsum of ceramic die and preparation method thereof, and the patent passes through flash burning
Technique makes beta-type semi-hydrated gypsum, then removes sulphur impurity therein by sulfur removal technology, its performance is improved by retarder, lacks
Point is due to the purity of undue pursuit beta-type semi-hydrated gypsum, and make use of flash burning method, and this can cause process costs to increase significantly, and
And complex process；Patent CN105541248A carbon fiber gypsum molds and preparation method thereof, patent utilization gypsum, the bamboo charcoal etc.
Progress, which is calcined, obtains carbon fiber, then by burning forging product, quick lime, carbon fiber, flyash, cyclodextrin, slag powders, silicon carbide whisker
It must have the disadvantage to have used more additive with silicic acid mixing so that gypsum material is made, and wherein have calcine technology, be produced into
This height, complex process, although and gypsum mold intensity comparison made from this method is high, corrosion rate it is higher (intolerant to
Corrosion).
Therefore, corrosion-resistant long-life gypsum mold is prepared using cheap raw material to be particularly important.
The content of the invention
In view of the deficiencies of the prior art, the present invention provides a kind of preparation method of corrosion-resistant long-life gypsum mold.Should
Method is using α types and beta-type semi-hydrated gypsum as raw material, using including the inorganic solid of flyash, building castoff, ceramic waste residue or clinker
Body discarded object is additive, is aided with polyvinyl alcohol or polycarboxylic acids sodium cellulosate, prepares water absorption rate height, corrosion resistance (anti-electrolysis
Matter is corroded) the low gypsum mold of strong, intensity height, service life length, production cost.
The present invention is achieved through the following technical solutions.
A kind of preparation method of corrosion-resistant long-life gypsum mold, comprises the following steps：
(1) after gypsum powder is well mixed with water, ball milling is carried out with ball mill, the gypsum raw material after ball milling is obtained；
(2) gypsum raw material after ball milling is added in agitator, adds additive, be uniformly mixed, in whipping process
Keep the total amount of gypsum constant；
(3) mixed material after stirring is poured into model and carries out obtaining constant temperature solidification at room temperature, taken out, obtain the corrosion resistant
Long-life gypsum mold is lost, is conserved standby.
Further, in step (1), the gypsum powder includes α types and beta-type semi-hydrated gypsum powder.
Further, in step (1), the solid-liquid ratio of the gypsum powder and water is 1.0~1.5:1g/mL.
Further, in step (1), the ball milling is to be milled to 100~500r/min.
Further, in step (1), the time of the ball milling is 5~24h.
Further, in step (2), the additive is inorganic solid waste, polyvinyl alcohol and polycarboxylic acids cellulose
One or more of sodium.
Further, in step (2), the inorganic solid waste includes flyash, building castoff, ceramic waste residue
Or clinker.
Further, in step (2), the addition of the additive and the mass ratio of gypsum powder are 1~75:125.
Further, in step (2), the rotating speed of the stirring is 100~500r/min.
Further, in step (2), the time of the stirring is 5~50min.
Further, in step (3), the maintenance is placed under conditions of humidity 10~80%, 10~100 DEG C of temperature
24~48h.
Compared with prior art, the present invention has advantages below and beneficial effect：
(1) gypsum mold for preparing of the present invention have that water absorption rate is high, easy to make, intensity is high, service life length, low corrosion
The advantage of rate (corrosion-resistant), the gypsum mold access times of preparation are up to 80-100 times, and service life is than traditional gypsum mold
More than 60% is improved, the numerous areas such as sanitary ceramics are can be widely applied to；
(2) preparation method of the invention is without calcining, sintering process, and technique is simple, and easy to operate, production cost is low；
(3) preparation method of the invention is employed adds including the inorganic of flyash, building castoff, ceramic waste residue or clinker
Plus agent, inorganic solid waste is consumed, the pressure of environment is reduced, and inorganic solid waste additive capacity has correspondence
The corrosion rate of gypsum mold reaches the value of minimum value.
Brief description of the drawings
Fig. 1 is the scanning electron microscope (SEM) photograph of gypsum mold prepared by embodiment 2.
Embodiment
The present invention is described in further detail with reference to embodiment, but the invention is not restricted to following examples.
Embodiment 1
A kind of preparation of corrosion-resistant long-life gypsum mold, comprises the following steps：
(1) 250g beta-type semi-hydrated gypsum powder, 200ml aqueous solvents are weighed to be matched, is carried out with ball mill 500r/min
Ball milling 5h, obtains the gypsum raw material after ball milling；
(2) gypsum raw material after ball milling is added in agitator, and rotating speed is adjusted to 300r/min rotating speed；
(3) 6g flyash is added, stirs in 5min, whipping process and keeps the total amount of gypsum constant；
(4) stirring pours into mixed material in model after terminating, and is taken out after solidification, obtains the corrosion-resistant long-life gypsum
Mould, is then placed on humidity for 30% by gypsum mold, and temperature is to conserve 24h at 25 DEG C.
Embodiment 2
A kind of preparation of corrosion-resistant long-life gypsum mold, comprises the following steps：
(1) 250g beta-type semi-hydrated gypsum powder, 200ml aqueous solvents are weighed to be matched, is carried out with ball mill 100r/min
Ball milling 24h, obtains the gypsum raw material after ball milling；
(2) gypsum raw material after ball milling is added in agitator, and rotating speed is adjusted to 100r/min rotating speed；
(3) 60g building castoffs are added, the process in 50min, whipping process that stirs keeps the total amount of gypsum constant；
(4) stirring terminates to pour into mixed material in model, is taken out after solidification, obtains the corrosion-resistant long-life plaster mold
Tool, is then placed on humidity for 40% by gypsum mold, and temperature is to conserve 24h at 30 DEG C.
Fig. 1 is the scanning electron microscope (SEM) photograph of the gypsum mold prepared, as shown in Figure 1, in gypsum mold there is more solid to give up
Gurry is distributed, and solid waste has spherical surface；Because solid waste has spherical surface, sodium metasilicate electrolyte can be risen
To the effect preferentially consumed, sodium metasilicate electrolyte meeting preferential deposition reduces it to gypsum crystal on solid waste surface
Corrosion, play a part of reducing corrosion rate, and then improve the service life of gypsum mold.
Embodiment 3
A kind of preparation of corrosion-resistant long-life gypsum mold, comprises the following steps：
(1) 250g beta-type semi-hydrated gypsum powder, 200ml aqueous solvents are weighed to be matched, is carried out with ball mill 250r/min
Ball milling 12h, obtains the gypsum raw material after ball milling；
(2) gypsum raw material after ball milling is added in agitator, and rotating speed is adjusted to 100r/min rotating speed；
(3) 15g ceramic waste residues are added, stirs in 30min, whipping process and keeps the total amount of gypsum constant；
(4) stirring pours into mixed material in model after terminating, and is taken out after solidification, obtains the corrosion-resistant long-life gypsum
Mould, is then placed on humidity for 10% by gypsum mold, and temperature is to conserve 24h at 10 DEG C.
Embodiment 4
A kind of preparation of corrosion-resistant long-life gypsum mold, comprises the following steps：
(1) 250g beta-type semi-hydrated gypsum powder, 200ml aqueous solvents are weighed to be matched, is carried out with ball mill 300r/min
Ball milling 12h, obtains the gypsum raw material after ball milling；
(2) gypsum raw material after ball milling is added in agitator, and rotating speed is adjusted to 100r/min rotating speed；
(3) 16g clinkers are added and the polycarboxylic acids sodium cellulosate that 6g mass fractions are 3%, stirred in 30min, whipping process
Keep the total amount of gypsum constant；
(4) stirring pours into mixed material in model after terminating, and is taken out after solidification, obtains the corrosion-resistant long-life gypsum
Mould, is then placed on humidity for 30% by gypsum mold, and temperature is to conserve 24h at 25 DEG C.
Embodiment 5
A kind of preparation of corrosion-resistant long-life gypsum mold, comprises the following steps：
(1) 300g alpha semi-hydrated gypsum powder, 200ml aqueous solvents are weighed to be matched, is carried out with ball mill 300r/min
Ball milling 12h, obtains the gypsum raw material after ball milling；
(2) gypsum raw material after ball milling is added in agitator, and rotating speed is adjusted to 100r/min rotating speed；
(3) 2g flyash is added, polycarboxylic acids sodium cellulosate and 6g mass fractions that 6g mass fractions are 3% is 3% to gather
Vinyl alcohol, stirs in 30min, whipping process and keeps the total amount of gypsum constant；
(4) stirring pours into mixed material in model after terminating, and is taken out after solidification, obtains the corrosion-resistant long-life gypsum
Mould, is then placed on humidity for 80% by gypsum mold, and temperature is to conserve 24h at 100 DEG C.
Embodiment 6
A kind of preparation of corrosion-resistant long-life gypsum mold, comprises the following steps：
(1) 200g alpha semi-hydrated gypsum powder, 200ml aqueous solvents are weighed to be matched, is carried out with ball mill 300r/min
Ball milling 12h, obtains the gypsum raw material after ball milling；
(2) gypsum raw material after ball milling is added in agitator, and rotating speed is adjusted to 100r/min rotating speed；
(3) 1g flyash is added, polycarboxylic acids sodium cellulosate and 1g mass fractions that 1g mass fractions are 3% is 3% to gather
Vinyl alcohol, stirs in 50min, whipping process and keeps the total amount of gypsum constant；
(4) stirring pours into mixed material in model after terminating, and is taken out after solidification, obtains the corrosion-resistant long-life gypsum
Mould, is then placed on humidity for 30% by gypsum mold, and temperature is to conserve 24h at 25 DEG C.
Embodiment 7
A kind of preparation of corrosion-resistant long-life gypsum mold, comprises the following steps：
(1) 250g alpha semi-hydrated gypsum powder, 200ml aqueous solvents are weighed to be matched, is carried out with ball mill 300r/min
Ball milling 12h, obtains the gypsum raw material after ball milling；
(2) gypsum raw material after ball milling is added in agitator, and rotating speed is adjusted to 100r/min rotating speed；
(3) it is 3% to add 50g flyash, the polycarboxylic acids sodium cellulosate that 50g mass fractions are 3% and 50g mass fractions
Polyvinyl alcohol, stirs in 30min, whipping process and keeps the total amount of gypsum constant；
(4) stirring pours into mixed material in model after terminating, and is taken out after solidification, obtains the corrosion-resistant long-life gypsum
Mould, is then placed on humidity for 50% by gypsum mold, and temperature is to conserve 24h at 80 DEG C.
Embodiment 8
A kind of preparation of corrosion-resistant long-life gypsum mold, comprises the following steps：
(1) 250g alpha semi-hydrated gypsum powder, 200ml aqueous solvents are weighed to be matched, is carried out with ball mill 300r/min
Ball milling 12h, obtains the gypsum raw material after ball milling；
(2) gypsum raw material after ball milling is added in agitator, and rotating speed is adjusted to 100r/min rotating speed；
(3) adding 20g building castoffs, the polycarboxylic acids sodium cellulosate that 25g mass fractions are 3% and 25g mass fractions is
3% polyvinyl alcohol, stirs in 30min, whipping process and keeps the total amount of gypsum constant；
(4) stirring pours into mixed material in model after terminating, and is taken out after solidification, obtains the corrosion-resistant long-life gypsum
Mould, is then placed on humidity for 70% by gypsum mold, and temperature is to conserve 48h at 25 DEG C.
Embodiment 9
A kind of preparation of corrosion-resistant long-life gypsum mold, comprises the following steps：
(1) 250g alpha semi-hydrated gypsum powder, 200ml aqueous solvents are weighed to be matched, is carried out with ball mill 300r/min
Ball milling 12h, obtains the gypsum raw material after ball milling；
(2) gypsum raw material after ball milling is added in agitator, and rotating speed is adjusted to 500r/min rotating speed；
(3) it is 3% to add 28g ceramic waste residues, the polycarboxylic acids sodium cellulosate that 6g mass fractions are 3% and 6g mass fractions
Polyvinyl alcohol, stirs in 50min, whipping process and keeps the total amount of gypsum constant；
(4) stirring pours into mixed material in model after terminating, and is taken out after solidification, obtains the corrosion-resistant long-life gypsum
Mould, is then placed on humidity for 30% by gypsum mold, and temperature is to conserve 24h at 15 DEG C.
Embodiment 10
A kind of preparation of corrosion-resistant long-life gypsum mold, comprises the following steps：
(1) 300g beta-type semi-hydrated gypsum powder, 200ml aqueous solvents are weighed to be matched, is carried out with ball mill 300r/min
Ball milling 12h, obtains the gypsum raw material after ball milling；
(2) gypsum raw material after ball milling is added in agitator, and rotating speed is adjusted to 100r/min rotating speed；
(3) the poly- second that the polycarboxylic acids sodium cellulosate and 6g mass fractions that addition 38g clinkers, 6g mass fractions are 3% are 3%
Enol, stirs in 50min, whipping process and keeps the total amount of gypsum constant；
(4) stirring pours into mixed material in model after terminating, and is taken out after solidification, obtains the corrosion-resistant long-life gypsum
Mould, is then placed on humidity for 30% by gypsum mold, and temperature is to conserve 24h at 25 DEG C.
The performance parameter such as institutes of table 1 such as compression strength, corrosion rate, the service life of gypsum mold prepared by embodiment 1~10
Show.
The performance parameter of gypsum mold prepared by the embodiment 1~10 of table 1
For the gypsum mold without additive, compression strength is generally 5.0MPa, and corrosion rate is 15%, access times
(service life) is 40-60；And as shown in Table 1, increased to by the access times for adding gypsum mold prepared by additive
80-100 times, service life increases significantly, while compression strength is also improved, reduces corrosion rate.
Based on the preparation process of embodiment 1~10, the gypsum mold addition of embodiment 1~10 not same amount (relative to gypsum
The addition wt% of powder quality) additive corresponding to corrosion rate it is as shown in table 2.
The corresponding corrosion rate of the Different adding amount of table 2
As shown in Table 2, it is continuously increased with the addition of additive, corrosion rate is constantly reduced, can be in each reality
The minimum looked in example to a corrosion rate is applied, the addition of corresponding additive is universal at 7wt% or 9wt%；With reference to
Table 1, under the addition of the corresponding additive of minimum of corrosion rate, gypsum mold has maximum access times, namely tool
There is most long service life.
Above-described embodiment is preferably embodiment, but embodiments of the present invention are not by the embodiment of the invention
Limitation, other any Spirit Essences without departing from the present invention and the change made under principle, modification, replacement, combine, simplification,
Equivalent substitute mode is should be, is included within protection scope of the present invention.
Claims (8)
1. a kind of preparation method of corrosion-resistant long-life gypsum mold, it is characterised in that comprise the following steps：
（1）After gypsum powder is well mixed with water, ball milling is carried out with ball mill, the gypsum raw material after ball milling is obtained；
（2）Gypsum raw material after ball milling is added in agitator, additive is added, is uniformly mixed, is kept in whipping process
The total amount of gypsum is constant；
（3）Mixed material after stirring is poured into model, solidified at room temperature, takes out, obtains the corrosion-resistant longevity
Gypsum mold is ordered, is conserved standby.
2. a kind of preparation method of corrosion-resistant long-life gypsum mold according to claim 1, it is characterised in that step
（1）In, the gypsum powder includes α types and beta-type semi-hydrated gypsum powder.
3. a kind of preparation method of corrosion-resistant long-life gypsum mold according to claim 1, it is characterised in that step
（1）In, the solid-liquid ratio of the gypsum powder and water is 1.0 ~ 1.5:1g/mL.
4. a kind of preparation method of corrosion-resistant long-life gypsum mold according to claim 1, it is characterised in that step
（1）In, the rotational speed of ball-mill of the ball milling is 100 ~ 500r/min；The time of ball milling is 5 ~ 24h.
5. a kind of preparation method of corrosion-resistant long-life gypsum mold according to claim 1, it is characterised in that step
（2）In, the additive is one or more of inorganic solid waste, polyvinyl alcohol and polycarboxylic acids sodium cellulosate；The nothing
Machine solid waste includes flyash, building castoff, ceramic waste residue or clinker.
6. a kind of preparation method of corrosion-resistant long-life gypsum mold according to claim 1, it is characterised in that step
（2）In, the addition of the additive and the mass ratio of gypsum powder are 1 ~ 75:125.
7. a kind of preparation method of corrosion-resistant long-life gypsum mold according to claim 1, it is characterised in that step
（2）In, the rotating speed of the stirring is 100 ~ 500r/min；The time of the stirring is 5 ~ 50min.
8. a kind of preparation method of corrosion-resistant long-life gypsum mold according to claim 1, it is characterised in that step
（3）In, the maintenance is 24 ~ 48h of placement under conditions of humidity 10 ~ 80%, 10 ~ 100 DEG C of temperature.
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| CN201710262743.XA CN107117920A (en) | 2017-04-20 | 2017-04-20 | A kind of preparation method of corrosion-resistant long-life gypsum mold |
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Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108178601A (en) * | 2018-01-10 | 2018-06-19 | 上海均博复合材料科技有限公司 | For molding gypsum mold of ceramic grout and preparation method thereof |
| CN110483022A (en) * | 2019-09-17 | 2019-11-22 | 东莞理工学院 | A kind of environment-friendly, high-intensity porous ceramic film support and preparation method thereof |
| CN116003091A (en) * | 2023-02-07 | 2023-04-25 | 河北优胜洁具有限公司 | High-strength ceramic gypsum mold and preparation method thereof |
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| CN105254264A (en) * | 2015-09-25 | 2016-01-20 | 钦州学院 | Processing method used for increasing Nixing pottery plaster mold strength |
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| CN105347768A (en) * | 2015-11-03 | 2016-02-24 | 北京建筑材料科学研究总院有限公司 | Gypsum powder for pressure slip-casting mold |
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| CN103086738A (en) * | 2011-10-27 | 2013-05-08 | 比亚迪股份有限公司 | Preparation method for gypsum mold raw materials and gypsum mold |
| CN104671736A (en) * | 2014-12-26 | 2015-06-03 | 昆山迪赛斯恩模具设计有限公司 | Method for preparing hot casting mold |
| CN105254264A (en) * | 2015-09-25 | 2016-01-20 | 钦州学院 | Processing method used for increasing Nixing pottery plaster mold strength |
| CN105272105A (en) * | 2015-09-25 | 2016-01-27 | 钦州学院 | Making technology of Nixing pottery gypsum molds |
| CN105347768A (en) * | 2015-11-03 | 2016-02-24 | 北京建筑材料科学研究总院有限公司 | Gypsum powder for pressure slip-casting mold |
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| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108178601A (en) * | 2018-01-10 | 2018-06-19 | 上海均博复合材料科技有限公司 | For molding gypsum mold of ceramic grout and preparation method thereof |
| CN108178601B (en) * | 2018-01-10 | 2020-09-01 | 上海均博复合材料科技有限公司 | Gypsum mould for ceramic slip casting and preparation method thereof |
| CN110483022A (en) * | 2019-09-17 | 2019-11-22 | 东莞理工学院 | A kind of environment-friendly, high-intensity porous ceramic film support and preparation method thereof |
| CN116003091A (en) * | 2023-02-07 | 2023-04-25 | 河北优胜洁具有限公司 | High-strength ceramic gypsum mold and preparation method thereof |
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