CN103848634B - A kind of polymer ceramic water reducer and preparation method thereof - Google Patents
A kind of polymer ceramic water reducer and preparation method thereof Download PDFInfo
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- CN103848634B CN103848634B CN201410065876.4A CN201410065876A CN103848634B CN 103848634 B CN103848634 B CN 103848634B CN 201410065876 A CN201410065876 A CN 201410065876A CN 103848634 B CN103848634 B CN 103848634B
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Abstract
The invention discloses a kind of polymer ceramic water reducer and preparation method thereof, water reducer includes monomer, distilled water, inorganic chain-transferring agent and initiator；Monomer includes acrylic acid and 2 acrylamide 2 methyl propane sulfonic acids；Monomer accounts for monomer and distilled water gross mass 30% ~ 42%；Acrylic acid accounts for monomer gross mass 65% ~ 85%；2 acrylamide 2 methyl propane sulfonic acids account for monomer gross mass 14% ~ 40%；Inorganic chain-transferring agent accounts for the 4.6% ~ 13.5% of monomer gross mass；Initiator accounts for monomer gross mass 2.2% ~ 9.5%.The present invention is simple to equipment requirement in process of production, it is not necessary to post processing, energy consumption is little, environmental friendliness；Mix this water reducer a small amount of during Ceramic manufacturing, can substantially reduce slip viscosity, increase slip mobility, strengthen slurry green body bending strength, also can significantly reduce water quantity in process, reduce product energy consumption in drying course.
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
Ceramic material is widely used, and light weight, intensity is high, heat-resisting and the product of resistance to chemical attack to utilize ceramic material to produce.Production of Ceramics mainly includes making the techniques such as mud, defibrination, enamel frit makeing, needs the viscosity adding substantial amounts of water to reduce glaze in these technical process, increases the mobility of glaze, it is to avoid the phenomenon of contracting glaze occur.But, the addition of large quantity of moisture will necessarily increase the energy consumption in follow-up dry run.And the addition of pottery auxiliary agent can reduce the viscosity of slip, increase the mobility of slip, reduce the addition of moisture in process thus reduce energy consumption.
At present, based on water reducer used on market is mainly with the water reducer of mineral-type, mainly some inorganic electrolyte, water can ionize, play the effect of regulation electric charge, but owing to being affected by molecular weight and molecular structure, water-reducing effect is limited, and addition is big.And the water reducer of organic is used alone, water-reducing effect is less desirable, needs the compounding water-reducing effect that can obtain of the water reducer with mineral-type.For example, Yang Jianhong research discovery can obtain when the interpolation metering of Sodium Polyacrylate is 0.6% ~ 0.8% in potter's clay and preferably solve solidifying effect；Liu Laibao etc. are found when according to 0.2ml polyacrylic acid by research: 0.55g waterglass: during 0.09g sodium tripolyphosphate, the dispersion effect that can have obtained of potter's clay slip；When Li Qingtao is compounded with inorganic salts (sodium tripolyphosphate, calgon) by research discovery Sodium Polyacrylate and polycarboxylate, it is that the dispersion effect acquired by 0.3% ~ 0.4% is best at addition, but addition is big, and production cost is of a relatively high, and the scope being suitable for is extremely limited.
Therefore, prior art has yet to be improved and developed.
Content of the invention
It is an object of the invention to provide a kind of polymer ceramic water reducer and preparation method thereof, it is intended to solve that existing mineral-type water reducer water-reducing effect is limited and addition is big；It is undesirable that organic water reducer is used alone water-reducing effect, need to mineral-type water reducer with the use of problem.
Technical scheme is as follows: a kind of polymer ceramic water reducer, wherein, including component be: monomer, distilled water, inorganic chain-transferring agent and initiator；Described monomer includes acrylic acid and 2-acrylamide-2-methyl propane sulfonic；The gross mass of described monomer accounts for the 30% ~ 42% of monomer and distilled water gross mass；Described acrylic acid accounts for the 65% ~ 85% of monomer gross mass；Described 2-acrylamide-2-methyl propane sulfonic accounts for the 14% ~ 40% of monomer gross mass；Described inorganic chain-transferring agent accounts for the 4.6% ~ 13.5% of monomer gross mass；Described initiator quality accounts for the 2.2% ~ 9.5% of monomer gross mass.
Described polymer ceramic water reducer, wherein, described initiator is the peroxide of mineral-type.
Described polymer ceramic water reducer, wherein, described initiator is ammonium persulfate or potassium peroxydisulfate.
Described polymer ceramic water reducer, wherein, described inorganic chain-transferring agent is sodium hydrogensulfite, potassium bisulfite or sodium hypophosphite.
The preparation method of a kind of polymer ceramic water reducer as described in above-mentioned any one, wherein, specifically includes following steps:
Step A00: by formula ratio, acrylic acid and 2-acrylamide-2-methyl propane sulfonic are dissolved in distilled water formation mixed solution, and the pH value of regulation mixed solution is 7 ~ 8；
Step B00: add inorganic chain-transferring agent in mixed solution, is warmed up to 75 ° of C ~ 90 ° C；
Step C00: be slowly added dropwise initiator again, reacts 3 ~ 4 hours, and temperature is maintained at 75 ° of C ~ 90 ° C；
Step D00: solution is cooled to room temperature, i.e. obtains efficient polymer ceramic water reducer.
The preparation method of described polymer ceramic water reducer, wherein, in described step A00, the pH value of regulation mixed solution is 7 ~ 8 by toward adding sodium hydroxide solution realization in mixed solution.
The preparation method of described polymer ceramic water reducer, wherein, the mass fraction of described sodium hydroxide solution is 60%.
Beneficial effects 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 requirement in process of production, it is not necessary to post processing, energy consumption is little, environmentally safe；During Production of Ceramics, this small amount of water reducer is mixed, can substantially reduce the viscosity of slip, increase slip system mobility, strengthen slurry green body bending strength.When the addition of this water reducer is 0.2% ~ 0.3%, potter's clay slip viscosity is 800mPa s ~ 845 mPa s；Flowing time is reduced to 48s ~ 60s；And the bending strength of potter's clay base substrate adds 0.31MPa ~ 0.63MPa.The addition of this water reducer can significantly reduce water quantity in process, reduces energy consumption in drying course for the product, has considerable economic benefit.
Brief description
Fig. 1 is the flow chart of steps of the preparation method of polymer ceramic water reducer in the present invention.
Detailed description of the invention
For making the purpose of the present invention, technical scheme and advantage clearer, clear and definite, the present invention is described in more detail for the embodiment that develops simultaneously referring to the drawings.
High molecular water reducer is made up of hydrophilic radical and hydrophobic grouping, the size of molecular weight and molecular structure can be regulated, because the characteristic of its structure, the surface at particle can be adsorbed, increase the charge density of particle surface, increase intergranular repulsion, the viscosity of slip can be significantly decreased, improve the mobility of system.For example, synthesize the Sodium Polyacrylate obtaining, Zeta potential can have been significantly improved under low-dosage, reduced the viscosity of system, increased the mobility of system, improve the bending strength of potter's clay base substrate.
The component that described polymer ceramic water reducer includes is: monomer, distilled water, inorganic chain-transferring agent and initiator；Described monomer includes acrylic acid and 2-acrylamide-2-methyl propane sulfonic；The gross mass of described monomer accounts for the 30% ~ 42% of monomer and distilled water gross mass；Described acrylic acid accounts for the 65% ~ 85% of monomer gross mass；Described 2-acrylamide-2-methyl propane sulfonic accounts for the 14% ~ 40% of monomer gross mass；Described inorganic chain-transferring agent quality accounts for the 4.6% ~ 13.5% of monomer gross mass；Described initiator quality accounts for the 2.2% ~ 9.5% of monomer gross mass.
Described chain-transferring agent, for controlling the chain length (that is the degree of polymerization of control polymer, or the viscosity of polymer) of polymer, can effectively make propagating radical generation radical transfer, shorten the length of chain；Usual chain-transferring agent addition is more, and the chain of polymer is shorter, and viscosity is also less.The inorganic chain-transferring agent of described employing is sodium hydrogensulfite or potassium bisulfite or sodium hypophosphite.Because in view of the chemical stability of reagent and processing safety, in the present embodiment, described inorganic chain-transferring agent is preferably sodium hydrogensulfite.
Described initiator carries out polymerisation for trigger monomer.Described initiator is the peroxide of mineral-type, specially ammonium persulfate or potassium peroxydisulfate.Because of the low price of ammonium persulfate, the emulsion resistance to water of gained is preferable, is therefore commonly used for the initiator of the vinyl monomer emulsion such as vinyl acetate, acrylate polymerization, and in the present embodiment, described initiator is preferably ammonium persulfate.
This polymer ceramic water reducer can pottery industrial production in, a small amount of this polymer ceramic water reducer is mixed, can substantially reduce the viscosity of slip, increase the mobility of slip system, reduce the addition of moisture in process, reduce energy consumption in drying course for the product；And in the range of water reducer addition, do not have the sedimentation phenomenon of potter's clay slip, the bending strength of slurry green body can be remarkably reinforced.
As it is shown in figure 1, be the flow chart of steps of the preparation method of polymer ceramic water reducer in the present invention.The preparation method of a kind of polymer ceramic water reducer as described above, specifically includes following steps:
Step A00: by formula ratio, acrylic acid and 2-acrylamide-2-methyl propane sulfonic are dissolved in distilled water formation mixed solution, and the pH value of regulation mixed solution is 7 ~ 8；
Step B00: add inorganic chain-transferring agent in mixed solution, is warmed up to 75 ° of C ~ 90 ° C；
Step C00: be slowly added dropwise initiator again, reacts 3 ~ 4 hours, and temperature is maintained at 75 ° of C ~ 90 ° C；
Step D00: solution is cooled to room temperature, i.e. obtains efficient polymer ceramic water reducer.
In the present embodiment, in described step A00, the pH value of regulation mixed solution is 7 ~ 8 by toward adding sodium hydroxide solution realization in mixed solution, and the mass fraction of sodium hydroxide solution is 60%.
According to above-mentioned formula of polymer ceramic water reducer and preparation method thereof, specific examples below is first provided to be illustrated:
Embodiment 1
Step A00: the distilled water of the acrylic acid of 100g, the 2-acrylamide-2-methyl propane sulfonic of 40g and 130g is joined the there-necked flask with agitator, stirring forms mixed solution, and the pH value dripping the sodium hydroxide solution regulation mixed solution that mass fraction is 60% is 8；Step B00: add inorganic chain-transferring agent sodium hydrogensulfite 7g in mixed solution, be warmed up to 80 ° of C；Step C00: be slowly added dropwise initiator ammonium persulfate 4.2g again, reacts 4 hours, and temperature is maintained at 80 ° of C；Step D00: solution is cooled to room temperature, i.e. obtains efficient polymer ceramic water reducer.
Above-mentioned prepared polymer ceramic water reducer is carried out performance test: test result shows, when add account for potter's clay mass fraction 0.3% through above-mentioned prepared polymer ceramic water reducer when, the viscosity of slip system is 845mPa s, flowing time is 60s, and the PC-67 flowing time under equal volume is 65s；Slip after ball milling does not occur sedimentation phenomenon, good stability after static；Equal add account for other water reducers of potter's clay mass fraction 0.3% in the case of, the bending strength ratio PC-67 as a comparison of the potter's clay base substrate adding this polymer ceramic water reducer adds 0.31MPa.
Embodiment 2
Step A00: the distilled water of the acrylic acid of 120g, the 2-acrylamide-2-methyl propane sulfonic of 40g and 120g is joined the there-necked flask with agitator, stirring forms mixed solution, and the pH value dripping the sodium hydroxide solution regulation mixed solution that mass fraction is 60% is 8；Step B00: add inorganic chain-transferring agent sodium hydrogensulfite 11.2g in mixed solution, be warmed up to 80 ° of C；Step C00: be slowly added dropwise initiator ammonium persulfate 8g again, reacts 3.5 hours, and temperature is maintained at 80 ° of C；Step D00: solution is cooled to room temperature, i.e. obtains efficient polymer ceramic water reducer.
Above-mentioned prepared polymer ceramic water reducer is carried out performance test: test result shows, when add account for potter's clay mass fraction 0.3% through above-mentioned prepared polymer ceramic water reducer when, the viscosity of slip system is 824mPa s, flowing time is 56s, and the PC-67 flowing time under equal volume is 65s；Slip after ball milling does not occur sedimentation phenomenon, good stability after static；Equal add account for other water reducers of potter's clay mass fraction 0.3% in the case of, the bending strength ratio PC-67 as a comparison of the potter's clay base substrate adding this polymer ceramic water reducer adds 0.54MPa.
Embodiment 3
Step A00: the distilled water of the acrylic acid of 80g, the 2-acrylamide-2-methyl propane sulfonic of 20g and 100g is joined the there-necked flask with agitator, stirring forms mixed solution, and the pH value dripping the sodium hydroxide solution regulation mixed solution that mass fraction is 60% is 8；Step B00: add inorganic chain-transferring agent sodium hydrogensulfite 10g in mixed solution, be warmed up to 80 ° of C；Step C00: be slowly added dropwise initiator ammonium persulfate 7g again, reacts 4 hours, and temperature is maintained at 80 ° of C；Step D00: solution is cooled to room temperature, i.e. obtains efficient polymer ceramic water reducer.
Above-mentioned prepared polymer ceramic water reducer is carried out performance test: test result shows, when add account for potter's clay mass fraction 0.3% through above-mentioned prepared polymer ceramic water reducer when, the viscosity of slip system is 819mPa s, flowing time is 50s, and the PC-67 flowing time under equal volume is 65s；Slip after ball milling does not occur sedimentation phenomenon, good stability after static；Equal add account for other water reducers of potter's clay mass fraction 0.3% in the case of, the bending strength ratio PC-67 as a comparison of the potter's clay base substrate adding this polymer ceramic water reducer adds 0.58MPa.
Case study on implementation 4
Step A00: the distilled water of the acrylic acid of 90g, the 2-acrylamide-2-methyl propane sulfonic of 19g and 90g is joined the there-necked flask with agitator, stirring forms mixed solution, and the pH value dripping the sodium hydroxide solution regulation mixed solution that mass fraction is 60% is 8；Step B00: add inorganic chain-transferring agent sodium hydrogensulfite 13.1g in mixed solution, be warmed up to 80 ° of C；Step C00: be slowly added dropwise initiator ammonium persulfate 8.8g again, reacts 4.5 hours, and temperature is maintained at 80 ° of C；Step D00: solution is cooled to room temperature, i.e. obtains efficient polymer ceramic water reducer.
Above-mentioned prepared polymer ceramic water reducer is carried out performance test: test result shows, when add account for potter's clay mass fraction 0.3% through above-mentioned prepared polymer ceramic water reducer when, the viscosity of slip system is 800mPa s, flowing time is 48s, and the PC-67 flowing time under equal volume is 65s；Slip after ball milling does not occur sedimentation phenomenon, good stability after static；Equal add account for other water reducers of potter's clay mass fraction 0.3% in the case of, the bending strength ratio PC-67 as a comparison of the potter's clay base substrate adding this polymer ceramic water reducer adds 0.63MPa.
This water reducer is simple to equipment requirement in process of production, it is not necessary to post processing, energy consumption is little, environmentally safe；During Production of Ceramics, this small amount of water reducer is mixed, can substantially reduce the viscosity of slip, increase slip system mobility, strengthen slurry green body bending strength.When the addition of this water reducer is 0.2% ~ 0.3%, potter's clay slip viscosity is 800mPa s ~ 845 mPa s；Flowing time is reduced to 48s ~ 60s；And the bending strength of potter's clay base substrate adds 0.31MPa ~ 0.63MPa.The addition of this water reducer can significantly reduce water quantity in process, reduces energy consumption in drying course for the product, has considerable economic benefit.
It should be appreciated that the application of the present invention is not limited to above-mentioned citing, for those of ordinary skills, can be improved according to the above description or convert, all these modifications and variations all should belong to the protection domain of claims of the present invention.
Claims (2)
1. a polymer ceramic water reducer, it is characterised in that by formula ratio, monomer is dissolved in distilled water formation mixed solution, is 8 by adding the pH value of the sodium hydroxide solution regulation mixed solution that mass fraction is 60% in mixed solution；Add the inorganic chain-transferring agent sodium hydrogensulfite accounting for monomer gross mass 12% in mixed solution, be warmed up to 80 ° of C；Being slowly added dropwise the initiator ammonium persulfate accounting for monomer gross mass 8.1% again, reacting 4.5 hours, temperature is maintained at 80 ° of C；Solution is cooled to room temperature, i.e. obtains efficient polymer ceramic water reducer；Described monomer gross mass accounts for the 54.77% of monomer and distilled water gross mass；Described monomer is made up of acrylic acid and 2-acrylamide-2-methyl propane sulfonic, and acrylic acid accounts for the 82.57% of monomer gross mass, and 2-acrylamide-2-methyl propane sulfonic accounts for the 17.43% of monomer gross mass.
2. the preparation method of a polymer ceramic water reducer as claimed in claim 1, it is characterized in that, specifically include following steps: step A00: by formula ratio, monomer is dissolved in distilled water formation mixed solution, is 8 by adding the pH value of the sodium hydroxide solution regulation mixed solution that mass fraction is 60% in mixed solution；Step B00: add the inorganic chain-transferring agent sodium hydrogensulfite accounting for monomer gross mass 12% in mixed solution, be warmed up to 80 ° of C；Step C00: be slowly added dropwise the initiator ammonium persulfate accounting for monomer gross mass 8.1% again, reacts 4.5 hours, and temperature is maintained at 80 ° of C；Step D00: solution is cooled to room temperature, i.e. obtains efficient polymer ceramic water reducer；Described monomer gross mass accounts for the 54.77% of monomer and distilled water gross mass；Described monomer includes acrylic acid and 2-acrylamide-2-methyl propane sulfonic, and acrylic acid accounts for the 82.57% of monomer gross mass, and 2-acrylamide-2-methyl propane sulfonic accounts for the 17.43% of monomer gross mass.
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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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| 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 |
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