CN103848634A - High molecular ceramic water reducing agent and preparation method thereof - Google Patents
High molecular ceramic water reducing agent and preparation method thereof Download PDFInfo
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- CN103848634A CN103848634A CN201410065876.4A CN201410065876A CN103848634A CN 103848634 A CN103848634 A CN 103848634A CN 201410065876 A CN201410065876 A CN 201410065876A CN 103848634 A CN103848634 A CN 103848634A
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Abstract
The invention discloses a high molecular ceramic water reducing agent and a preparation method thereof. The water reducing agent comprises a monomer, distilled water, an inorganic chain transfer agent and an initiator, wherein the monomer comprises a crylic acid and a 2-acrylic amide-2-methyl propane sulfonic acid; the monomer accounts for 30-42% of total mass of the monomer and the distilled water; the crylic acid accounts for 65-85% of total mass of the monomer; the 2-acrylic amide-2-methyl propane sulfonic acid accounts for 14-40% of total mass of the monomer; the inorganic chain transfer agent accounts for 4.6-13.5% of total mass of the monomer; the initiator accounts for 2.2-9.5% of total mass of the monomer. The high molecular ceramic water reducing agent is simple in demands on equipment in the production process, free of post-treatment, small in energy consumption, and friendly to environment, the viscosity of the slurry can be obviously reduced by doping a little of water reducing agent in the ceramic processing process, the liquidity of the slurry is increased, the bending strength of a slurry billet is enhanced, the adding amount of moisture in the processing process can be obviously reduced, and the energy consumption of the product in the baking process is reduced.
Description
Technical field
The present invention relates to Production of Ceramics auxiliary agent field, in particular a kind of polymer ceramic water reducer and preparation method thereof.
Background technology
Stupalith is widely used, and utilizes that stupalith can produce that quality is light, intensity is high, the product of heat-resisting and resistance to chemical attack.Production of Ceramics mainly comprises techniques such as making mud, defibrination, enamel frit makeing needs to add a large amount of water to reduce the viscosity of glaze in these technological processs, increases the mobility of glaze, avoids occurring the phenomenon of contracting glaze.But, large quantity of moisture add the energy consumption that will inevitably increase in follow-up drying process.And ceramic auxiliary agent add the viscosity that can reduce slip, increase the mobility of slip, reduce energy consumption thereby reduce adding of moisture in the course of processing.
At present, on market, water reducer used, mainly taking the water reducer of mineral-type as main, is mainly some inorganic ionogen, in water, can ionize, play the effect that regulates electric charge, but owing to being subject to the impact of molecular weight and molecular structure, water-reducing effect is limited, and addition is large.And the water reducer of organic uses separately, water-reducing effect is not very desirable, need to the composite water-reducing effect that can obtain of the water reducer of mineral-type.For example, Yang Jianhong research is found when in potter's clay, the interpolation metering when sodium polyacrylate is 0.6% ~ 0.8% to obtain the solidifying effect of good solution; Liu Laibao etc. find when according to 0.2ml polyacrylic acid by research: 0.55g water glass: when 0.09g tripoly phosphate sodium STPP, and the dispersion effect that can obtain of potter's clay slip; When Li Qingtao finds that by research sodium polyacrylate and polycarboxylate and inorganic salt (tripoly phosphate sodium STPP, Sodium hexametaphosphate 99) are composite, be that 0.3% ~ 0.4% obtained dispersion effect is best at addition, but addition is large, production cost is relatively high, and applicable scope is very limited.
Therefore, prior art has yet to be improved and developed.
Summary of the invention
The object of the present invention is to provide a kind of polymer ceramic water reducer and preparation method thereof, be intended to solve that existing mineral-type water reducer water-reducing effect is limited and addition is large; Organic water reducer uses separately water-reducing effect undesirable, the problem that need be used in conjunction with mineral-type water reducer.
Technical scheme of the present invention is as follows: a kind of polymer ceramic water reducer, and wherein, the component comprising is: monomer, distilled water, inorganic chain-transfer agent and initiator; Described monomer comprises vinylformic acid and 2-acrylamide-2-methyl propane sulfonic; The total mass of described monomer accounts for 30% ~ 42% of monomer and distilled water total mass; Described vinylformic acid accounts for 65% ~ 85% of monomer total mass; Described 2-acrylamide-2-methyl propane sulfonic accounts for 14% ~ 40% of monomer total mass; Described inorganic chain-transfer agent accounts for 4.6% ~ 13.5% of monomer total mass; Described initiator quality accounts for 2.2% ~ 9.5% of monomer total mass.
Described polymer ceramic water reducer, wherein, the superoxide that described initiator is mineral-type.
Described polymer ceramic water reducer, wherein, described initiator is ammonium persulphate or Potassium Persulphate.
Described polymer ceramic water reducer, wherein, described inorganic chain-transfer agent is sodium bisulfite, Potassium hydrogen sulfite or inferior sodium phosphate.
A preparation method for polymer ceramic water reducer as described in above-mentioned any one, wherein, specifically comprises the following steps:
Steps A 00: vinylformic acid and 2-acrylamide-2-methyl propane sulfonic are dissolved in distilled water and form mixing solutions by formula ratio, and regulating the pH value of mixing solutions is 7 ~ 8;
Step B00: add inorganic chain-transfer agent in mixing solutions, be warmed up to 75 ° of C ~ 90 ° C;
Step C00: slowly drip initiator again, react 3 ~ 4 hours, temperature remains on 75 ° of C ~ 90 ° C;
Step D00: solution cool to room temperature, obtain efficient polymer ceramic water reducer.
The preparation method of described polymer ceramic water reducer, wherein, in described steps A 00, regulating the pH value of mixing solutions is 7 ~ 8 by add sodium hydroxide solution realization in mixing solutions.
The preparation method of described polymer ceramic water reducer, wherein, the massfraction of described sodium hydroxide solution is 60%.
Beneficial effect of the present invention: the present invention is by providing a kind of polymer ceramic water reducer and preparation method thereof, and this polymer ceramic water reducer is simple to equipment requirements in process of production, and without aftertreatment, energy consumption is little, environmentally safe; In Production of Ceramics process, this small amount of water reducer is mixed, can obviously reduce the viscosity of slip, increase slip system mobility, strengthen slurry green body flexural strength.In the time that the addition of this water reducer is 0.2% ~ 0.3%, potter's clay slip viscosity is 800mPas ~ 845 mPas; Flowing time is reduced to 48s ~ 60s; And the flexural strength of potter's clay base substrate has increased 0.31MPa ~ 0.63MPa.Adding of this water reducer can obviously reduce water quantity in the course of processing, reduces the energy consumption of product in drying course, has considerable economic benefit.
Brief description of the drawings
Fig. 1 is the flow chart of steps of the preparation method of polymer ceramic water reducer in the present invention.
Embodiment
For making object of the present invention, technical scheme and advantage clearer, clear and definite, developing simultaneously referring to accompanying drawing, the present invention is described in more detail for embodiment.
High molecular water reducer is made up of hydrophilic radical and hydrophobic grouping, the size of molecular weight and molecular structure can regulate, because the characteristic of its structure, can be adsorbed on the surface of particle, increase the electric density of particle surface, increase intergranular repulsion, can reduce significantly the viscosity of slip, improve the mobility of system.For example, the synthetic sodium polyacrylate obtaining can obviously improve Zeta potential under low-dosage, reduces the viscosity of system, increases the mobility of system, improves the flexural strength of potter's clay base substrate.
The component that described polymer ceramic water reducer comprises is: monomer, distilled water, inorganic chain-transfer agent and initiator; Described monomer comprises vinylformic acid and 2-acrylamide-2-methyl propane sulfonic; The total mass of described monomer accounts for 30% ~ 42% of monomer and distilled water total mass; Described vinylformic acid accounts for 65% ~ 85% of monomer total mass; Described 2-acrylamide-2-methyl propane sulfonic accounts for 14% ~ 40% of monomer total mass; Described inorganic chain-transfer agent quality accounts for 4.6% ~ 13.5% of monomer total mass; Described initiator quality accounts for 2.2% ~ 9.5% of monomer total mass.
Described chain-transfer agent, for controlling the chain length (that is control the polymerization degree of polymkeric substance, or the viscosity of polymkeric substance) of polymkeric substance, can make propagating radical generation radical transfer effectively, shortens the length of chain; Conventionally chain-transfer agent addition is more, and the chain of polymkeric substance is shorter, and viscosity is also less.The inorganic chain-transfer agent of described employing is sodium bisulfite or Potassium hydrogen sulfite or inferior sodium phosphate.Because considering chemical stability and the processing safety of reagent, in the present embodiment, described inorganic chain-transfer agent is preferably sodium bisulfite.
Described initiator carries out polyreaction for trigger monomer.Described initiator is the superoxide of mineral-type, is specially ammonium persulphate or Potassium Persulphate.Because of the low price of ammonium persulphate, the emulsion water tolerance of gained is better, is therefore commonly used for the initiator of the vinyl monomer such as vinyl acetate between to for plastic, acrylate letex polymerization, and in the present embodiment, described initiator is preferably ammonium persulphate.
This polymer ceramic water reducer can pottery industrial production in, a small amount of this polymer ceramic water reducer is mixed, can obviously reduce the viscosity of slip, increase the mobility of slip system, reduce the add-on of moisture in the course of processing, reduce the energy consumption of product in drying course; And in the scope of water reducer addition, there will not be the sedimentation phenomenon of potter's clay slip, can obviously strengthen the flexural strength of slurry green body.
As shown in Figure 1, be the flow chart of steps of the preparation method of polymer ceramic water reducer in the present invention.A preparation method for polymer ceramic water reducer as described above, specifically comprises the following steps:
Steps A 00: vinylformic acid and 2-acrylamide-2-methyl propane sulfonic are dissolved in distilled water and form mixing solutions by formula ratio, and regulating the pH value of mixing solutions is 7 ~ 8;
Step B00: add inorganic chain-transfer agent in mixing solutions, be warmed up to 75 ° of C ~ 90 ° C;
Step C00: slowly drip initiator again, react 3 ~ 4 hours, temperature remains on 75 ° of C ~ 90 ° C;
Step D00: solution cool to room temperature, obtain efficient polymer ceramic water reducer.
In the present embodiment, in described steps A 00, regulating the pH value of mixing solutions is 7 ~ 8 by add sodium hydroxide solution realization in mixing solutions, and the massfraction of sodium hydroxide solution is 60%.
According to formula of above-mentioned polymer ceramic water reducer and preparation method thereof, first provide following specific embodiment to be illustrated:
Embodiment 1
Steps A 00: the distilled water of the 2-acrylamide-2-methyl propane sulfonic of the vinylformic acid of 100g, 40g and 130g is joined to the there-necked flask with agitator, stir and form mixing solutions, it is 8 that the sodium hydroxide solution that dropping massfraction is 60% regulates the pH value of mixing solutions; Step B00: add inorganic chain-transfer agent sodium bisulfite 7g in mixing solutions, be warmed up to 80 ° of C; Step C00: slowly drip initiator ammonium persulfate 4.2g again, react 4 hours, temperature remains on 80 ° of C; Step D00: solution cool to room temperature, obtain efficient polymer ceramic water reducer.
The above-mentioned polymer ceramic water reducer making is carried out to performance test: test result shows, when interpolation account for potter's clay massfraction 0.3% through the above-mentioned polymer ceramic water reducer making time, the viscosity of slip system is 845mPas, flowing time is 60s, and PC-67 flowing time under equal volume is 65s; After static, there is not sedimentation phenomenon, good stability in the slip after ball milling; Add account for potter's clay massfraction 0.3% other water reducers in the situation that equal, the PC-67 as a comparison of bending strength ratio that adds the potter's clay base substrate of this polymer ceramic water reducer has increased 0.31MPa.
Embodiment 2
Steps A 00: the distilled water of the 2-acrylamide-2-methyl propane sulfonic of the vinylformic acid of 120g, 40g and 120g is joined to the there-necked flask with agitator, stir and form mixing solutions, it is 8 that the sodium hydroxide solution that dropping massfraction is 60% regulates the pH value of mixing solutions; Step B00: add inorganic chain-transfer agent sodium bisulfite 11.2g in mixing solutions, be warmed up to 80 ° of C; Step C00: slowly drip initiator ammonium persulfate 8g again, react 3.5 hours, temperature remains on 80 ° of C; Step D00: solution cool to room temperature, obtain efficient polymer ceramic water reducer.
The above-mentioned polymer ceramic water reducer making is carried out to performance test: test result shows, when interpolation account for potter's clay massfraction 0.3% through the above-mentioned polymer ceramic water reducer making time, the viscosity of slip system is 824mPas, flowing time is 56s, and PC-67 flowing time under equal volume is 65s; After static, there is not sedimentation phenomenon, good stability in the slip after ball milling; Add account for potter's clay massfraction 0.3% other water reducers in the situation that equal, the PC-67 as a comparison of bending strength ratio that adds the potter's clay base substrate of this polymer ceramic water reducer has increased 0.54MPa.
Embodiment 3
Steps A 00: the distilled water of the 2-acrylamide-2-methyl propane sulfonic of the vinylformic acid of 80g, 20g and 100g is joined to the there-necked flask with agitator, stir and form mixing solutions, it is 8 that the sodium hydroxide solution that dropping massfraction is 60% regulates the pH value of mixing solutions; Step B00: add inorganic chain-transfer agent sodium bisulfite 10g in mixing solutions, be warmed up to 80 ° of C; Step C00: slowly drip initiator ammonium persulfate 7g again, react 4 hours, temperature remains on 80 ° of C; Step D00: solution cool to room temperature, obtain efficient polymer ceramic water reducer.
The above-mentioned polymer ceramic water reducer making is carried out to performance test: test result shows, when interpolation account for potter's clay massfraction 0.3% through the above-mentioned polymer ceramic water reducer making time, the viscosity of slip system is 819mPas, flowing time is 50s, and PC-67 flowing time under equal volume is 65s; After static, there is not sedimentation phenomenon, good stability in the slip after ball milling; Add account for potter's clay massfraction 0.3% other water reducers in the situation that equal, the PC-67 as a comparison of bending strength ratio that adds the potter's clay base substrate of this polymer ceramic water reducer has increased 0.58MPa.
Case study on implementation 4
Steps A 00: the distilled water of the 2-acrylamide-2-methyl propane sulfonic of the vinylformic acid of 90g, 19g and 90g is joined to the there-necked flask with agitator, stir and form mixing solutions, it is 8 that the sodium hydroxide solution that dropping massfraction is 60% regulates the pH value of mixing solutions; Step B00: add inorganic chain-transfer agent sodium bisulfite 13.1g in mixing solutions, be warmed up to 80 ° of C; Step C00: slowly drip initiator ammonium persulfate 8.8g again, react 4.5 hours, temperature remains on 80 ° of C; Step D00: solution cool to room temperature, obtain efficient polymer ceramic water reducer.
The above-mentioned polymer ceramic water reducer making is carried out to performance test: test result shows, when interpolation account for potter's clay massfraction 0.3% through the above-mentioned polymer ceramic water reducer making time, the viscosity of slip system is 800mPas, flowing time is 48s, and PC-67 flowing time under equal volume is 65s; After static, there is not sedimentation phenomenon, good stability in the slip after ball milling; Add account for potter's clay massfraction 0.3% other water reducers in the situation that equal, the PC-67 as a comparison of bending strength ratio that adds the potter's clay base substrate of this polymer ceramic water reducer has increased 0.63MPa.
This water reducer is simple to equipment requirements in process of production, and without aftertreatment, energy consumption is little, environmentally safe; In Production of Ceramics process, this small amount of water reducer is mixed, can obviously reduce the viscosity of slip, increase slip system mobility, strengthen slurry green body flexural strength.In the time that the addition of this water reducer is 0.2% ~ 0.3%, potter's clay slip viscosity is 800mPas ~ 845 mPas; Flowing time is reduced to 48s ~ 60s; And the flexural strength of potter's clay base substrate has increased 0.31MPa ~ 0.63MPa.Adding of this water reducer can obviously reduce water quantity in the course of processing, reduces the energy consumption of product in drying course, has considerable economic benefit.
Should be understood that, application of the present invention is not limited to above-mentioned giving an example, and for those of ordinary skills, can be improved according to the above description or convert, and all these improvement and conversion all should belong to the protection domain of claims of the present invention.
Claims (7)
1. a polymer ceramic water reducer, is characterized in that, the component comprising is: monomer, distilled water, inorganic chain-transfer agent and initiator; Described monomer comprises vinylformic acid and 2-acrylamide-2-methyl propane sulfonic; The total mass of described monomer accounts for 30% ~ 42% of monomer and distilled water total mass; Described vinylformic acid accounts for 65% ~ 85% of monomer total mass; Described 2-acrylamide-2-methyl propane sulfonic accounts for 14% ~ 40% of monomer total mass; Described inorganic chain-transfer agent quality accounts for 4.6% ~ 13.5% of monomer total mass; Described initiator quality accounts for 2.2% ~ 9.5% of monomer total mass.
2. polymer ceramic water reducer according to claim 1, is characterized in that, the superoxide that described initiator is mineral-type.
3. polymer ceramic water reducer according to claim 2, is characterized in that, described initiator is ammonium persulphate or Potassium Persulphate.
4. polymer ceramic water reducer according to claim 1, is characterized in that, described inorganic chain-transfer agent is sodium bisulfite, Potassium hydrogen sulfite or inferior sodium phosphate.
5. a preparation method for the polymer ceramic water reducer as described in claim 1-4 any one, is characterized in that, specifically comprises the following steps:
Steps A 00: vinylformic acid and 2-acrylamide-2-methyl propane sulfonic are dissolved in distilled water and form mixing solutions by formula ratio, and regulating the pH value of mixing solutions is 7 ~ 8;
Step B00: add inorganic chain-transfer agent in mixing solutions, be warmed up to 75 ° of C ~ 90 ° C;
Step C00: slowly drip initiator again, react 3 ~ 4 hours, temperature remains on 75 ° of C ~ 90 ° C;
Step D00: solution cool to room temperature, obtain efficient polymer ceramic water reducer.
6. the preparation method of polymer ceramic water reducer according to claim 5, is characterized in that, in described steps A 00, regulating the pH value of mixing solutions is 7 ~ 8 by add sodium hydroxide solution realization in mixing solutions.
7. the preparation method of polymer ceramic water reducer according to claim 6, is characterized in that, the massfraction of described sodium hydroxide solution is 60%.
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Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106565889A (en) * | 2016-11-02 | 2017-04-19 | 华南理工大学 | Low-temperature synthesis method of polycarboxylate-type ceramic water reducer |
| CN108409902A (en) * | 2018-03-27 | 2018-08-17 | 华南理工大学 | Macromolecule grinding-aid dispersant and its application |
| CN108569905A (en) * | 2018-06-17 | 2018-09-25 | 刘玉清 | A kind of ceramics liquefacient and preparation method thereof |
| CN118598669A (en) * | 2024-08-09 | 2024-09-06 | 南通三责精密陶瓷有限公司 | Method for preparing pressureless sintered silicon carbide ceramic by gel injection molding with high strength and low deformation |
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| CN103275264A (en) * | 2013-05-08 | 2013-09-04 | 中科院广州化学有限公司 | Water reducing agent capable of reducing viscosity of slurry as well as preparation method and application thereof |
| CN103304244A (en) * | 2012-12-20 | 2013-09-18 | 中科院广州化学有限公司 | High-polymer water reducing agent for ceramic concentrated suspension as well as preparation method and application of high-polymer water reducing agent |
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| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103304244A (en) * | 2012-12-20 | 2013-09-18 | 中科院广州化学有限公司 | High-polymer water reducing agent for ceramic concentrated suspension as well as preparation method and application of high-polymer water reducing agent |
| CN103275264A (en) * | 2013-05-08 | 2013-09-04 | 中科院广州化学有限公司 | Water reducing agent capable of reducing viscosity of slurry as well as preparation method and application thereof |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106565889A (en) * | 2016-11-02 | 2017-04-19 | 华南理工大学 | Low-temperature synthesis method of polycarboxylate-type ceramic water reducer |
| CN108409902A (en) * | 2018-03-27 | 2018-08-17 | 华南理工大学 | Macromolecule grinding-aid dispersant and its application |
| CN108569905A (en) * | 2018-06-17 | 2018-09-25 | 刘玉清 | A kind of ceramics liquefacient and preparation method thereof |
| CN118598669A (en) * | 2024-08-09 | 2024-09-06 | 南通三责精密陶瓷有限公司 | Method for preparing pressureless sintered silicon carbide ceramic by gel injection molding with high strength and low deformation |
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