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A polymer water reducer for reducing the viscosity of clay slurry and its preparation and application

A water-reducing agent and polymer technology, which is applied in the field of ceramic water-reducing agent preparation, can solve the problems that organic polymer water-reducing agents have not been industrialized, and inorganic water-reducing agents cannot achieve low dosage and high water-reducing rate. , to achieve the effect of good water reduction, small dosage and low energy consumption

Inactive Publication Date: 2016-01-20
FOSHAN CENT FOR FUNCTIONAL POLYMER MATERIALS & FINE CHEM
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Problems solved by technology

[0005] The purpose of the present invention is to provide a polymer water reducer for reducing the viscosity of clay slurry and its preparation and application, aiming at solving the requirement that the existing inorganic water reducer cannot meet the requirements of low dosage and high water reducing rate. The problem that the polymer water reducer has not yet achieved industrialization

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  • A polymer water reducer for reducing the viscosity of clay slurry and its preparation and application

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preparation example Construction

[0027] like figure 1 Shown is a flow chart of the steps of the preparation method of the polymer water reducer for reducing the viscosity of clay slurry in the present invention. A method for preparing a polymer water reducer for reducing the viscosity of clay slurry as described above, specifically comprising the following steps:

[0028] Step A00: dissolving acrylic acid and sodium allyl sulfonate in distilled water according to the formula to form a mixed solution, and adjusting the pH value of the mixed solution to 7-8;

[0029] Step B00: Add an inorganic chain transfer agent to the mixed solution, and heat up to 75°C~90°C;

[0030] Step C00: Slowly add the initiator dropwise, react for 3-4 hours, and keep the temperature at 75°C-90°C;

[0031] Step D00: Cool the solution to room temperature to obtain a high-efficiency polymer ceramic water reducer.

[0032] In this embodiment, in the step A00, adjusting the pH value of the mixed solution to 7-8 is realized by adding so...

Embodiment 1

[0036] Step A00: Add 120 g of acrylic acid, 40 g of sodium allyl sulfonate and 200 g of distilled water into a three-necked flask with a stirrer, stir to form a mixed solution, and dropwise add a 60% mass fraction of sodium hydroxide solution to adjust the mixed solution The pH value is 8; step B00: add inorganic chain transfer agent sodium bisulfite 8g in mixed solution, be warming up to 80 DEG C; Step C00: slowly add initiator ammonium persulfate 9.6g again, react 4 hours, temperature Keep it at 80°C; Step D00: Cool the solution to room temperature to obtain a high-efficiency polymer ceramic water reducer.

[0037] The performance test of the polymer ceramic water reducer prepared above was carried out: the test results showed that when the polymer ceramic water reducer prepared above accounted for 0.25% of the mass fraction of clay, the viscosity of the slurry system was 771mPa·s , the initial flow time is 50s, the fluidity is good, there is no sedimentation phenomenon afte...

Embodiment 2

[0039] Step A00: Add 100 g of acrylic acid, 25 g of sodium allyl sulfonate and 100 g of distilled water into a three-necked flask with a stirrer, stir to form a mixed solution, and dropwise add a 60% mass fraction of sodium hydroxide solution to adjust the mixed solution The pH value is 8; Step B00: add inorganic chain transfer agent sodium bisulfite 8.8gg in mixed solution, be warming up to 85 DEG C; Step C00: slowly add initiator ammonium persulfate 5g again, react 5 hours, temperature Keep it at 85°C; Step D00: Cool the solution to room temperature to obtain a high-efficiency polymer ceramic water reducer.

[0040] The polymer ceramic water reducer prepared above was tested for performance: the test results showed that when the polymer ceramic water reducer prepared above accounted for 0.25% of the mass fraction of clay, the viscosity of the slurry system was 826mPa·s , the initial flow time is 60s, the fluidity is good, there is no sedimentation phenomenon after being left...

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Abstract

The invention discloses a macromolecule water reducing agent for reducing viscosity of clay slurry as well as a preparation method and an application thereof. The water reducing agent comprises a monomer, distilled water, inorganic chain transferring agent and initiator; the weight of the monomer accounts for 25 to 40 percent of the total weight of the monomer and distilled water; the monomer comprises crylic acid and sodium allysulfonate; the weight of crylic acid accounts for 70 to 85 percent of the total weight of the monomer, and the weight of sodium allysulfonate accounts for 13 to 35 percent of the total weight of the monomer. A hydrophilic group of the polymer monomer can be well adsorbed onto the surface of particles, hydrophilic side chains can be better strength in the mortar, the characteristics such as low mixing amount and high water reducing rate can be realized; moreover, the preparation method is simple to operate; the requirement on the device is simple in the production process, no after-treatment is needed, the energy consumption is low, and the environmental pollution is avoided. The dosage in the application process of the clay is small, the water reducing effect is good, the mobility of the clay slurry can be remarkably improved, and the viscosity of the clay slurry can be reduced; and the phenomenon that the clay slurry is settled in the addition range of the dosage of the additive can be avoided.

Description

technical field [0001] The invention relates to the field of preparation of ceramic water reducers, in particular to a polymer water reducer for reducing the viscosity of clay slurry and its preparation and application. Background technique [0002] With the development of society, people have higher and higher requirements for ceramic products. In the production and processing of ceramic products, in order to increase the fluidity of the slurry and reduce the viscosity of the slurry system, it is necessary to increase the amount of water added, and the addition of a large amount of water will cause poor thixotropy of the slurry system, prone to sedimentation, and also It will increase energy consumption in the drying process of ceramic products, resulting in increased production costs. The addition of ceramic additives can solve this problem well. Ceramic additives can reduce the viscosity of the clay slurry system, increase the fluidity of the system, and make the slurry...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C08F220/06
Inventor 庞浩张磊廖兵郑景新黄健恒刘海露程劲松周林
Owner FOSHAN CENT FOR FUNCTIONAL POLYMER MATERIALS & FINE CHEM
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