Polycarboxylate-based ceramic water reducer and preparation method as well as application thereof

A ceramic water-reducing agent and a polycarboxylic acid-based technology, which is applied in the field of ceramic water-reducing agent preparation, can solve the problems of limited use of inorganic water-reducing agents, large addition amount, and increased production cost of composite water-reducing agents, thereby reducing the Viscosity, improve fluidity, good water reduction effect

Inactive Publication Date: 2014-06-25
FOSHAN CENT FOR FUNCTIONAL POLYMER MATERIALS & FINE CHEM
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  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0007] The purpose of the present invention is to provide a polycarboxylate ceramic water reducer and its preparation method and application, aiming to solve the problems of limited use of existing inorganic water reducers, large addition amount and increased production cost by using composite water reducers question

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  • Polycarboxylate-based ceramic water reducer and preparation method as well as application thereof

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[0030] Such as figure 1 Shown is a flow chart of the steps of the preparation method of the polycarboxylate ceramic water reducer in the present invention. A preparation method of the polycarboxylate ceramic water reducer as described above, specifically comprising the following steps:

[0031] Step A00: dissolving acrylic acid and crotonic acid in distilled water according to the formula to form a mixed solution, and adjusting the pH value of the mixed solution to 7-8;

[0032] Step B00: Add an inorganic chain transfer agent to the mixed solution, and heat up to 75 ° C ~ 90 ° C;

[0033] Step C00: Slowly add the initiator dropwise, react for 3 to 4 hours, and keep the temperature at 75°C to 90°C;

[0034] Step D00: Cool the solution to room temperature to obtain a polycarboxylate ceramic water reducer.

[0035] In this embodiment, in the step A00, adjusting the pH value of the mixed solution to 7-8 is realized by adding sodium hydroxide solution to the mixed solution, and ...

Embodiment 1

[0039] Step A00: Add 80 g of acrylic acid, 30 g of crotonic acid, and 120 g of distilled water into a three-necked flask with a stirrer, stir to form a mixed solution, and dropwise add a mass fraction of 60% sodium hydroxide solution to adjust the pH of the mixed solution to 8; Step B00: Add 5.5 g of inorganic chain transfer agent sodium bisulfite to the mixed solution, and heat up to 65 ° C; Step C00: Slowly add 3.4 g of initiator ammonium persulfate, react for 3 hours, and keep the temperature at 65 °C; °C; Step D00: Cool the solution to room temperature to obtain a polycarboxylate ceramic water reducer.

[0040] The performance test of the polycarboxylate-based ceramic water-reducer prepared above was carried out: the test results showed that when adding a polymer water-reducer accounting for 0.15% of the mass fraction of clay, the viscosity of the slurry system was measured to be 715 mPa·s. The initial flow time of the slurry was 52s, and the flow performance was good; the...

Embodiment 2

[0042] Step A00: Add 90 g of acrylic acid, 20 g of crotonic acid, 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 pH of the mixed solution to 8; Step B00: Add 7.8g of inorganic chain transfer agent sodium bisulfite to the mixed solution, and heat up to 65°C; Step C00: Slowly add 5.6g of initiator ammonium persulfate, react for 3.5 hours, and keep the temperature at 65°C °C; Step D00: Cool the solution to room temperature to obtain a polycarboxylate ceramic water reducer.

[0043] The performance test of the polycarboxylate-based ceramic water-reducer prepared above was carried out: the test results showed that when adding a polymer water-reducer accounting for 0.2% by mass of clay, the viscosity of the slurry system was measured to be 800 mPa·s, The initial flow time of the slurry was 56s, and the flow performance was good; the slurry did not se...

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Abstract

The invention discloses a polycarboxylate-based ceramic water reducer and a preparation method as well as an application thereof. The water reducer comprises monomers, distilled water, an inorganic chain transfer agent and an initiator; the monomers account for 29-45 percent of the total mass of the monomer and the distilled water; the monomers comprise acrylic acid and crotonic acid; acrylic acid accounts for 66-89 percent of the total mass of the monomers, and crotonic acid accounts for 10-40 percent of the total mass of the monomers. The polycarboxylate-based water reducer based on crotonic acid has the advantages of low mixing amount, high water reducing rate, simplicity in preparation and operation and no need of compounding with inorganic salts, and meet the requirements of ceramic production enterprises; the requirements on equipment during the production of the polycarboxylate-based ceramic water reducer are simple, post treatment is unnecessary, the energy consumption is small, and no environmental pollution is generated; the dose of pottery clay is small during application, the water reducing effect is good, the fluidity of ceramic slurry can be remarkably improved, and the viscosity of ceramic slurry is reduced; no settlement phenomenon of ceramic slurry appears within the adding dose range.

Description

technical field [0001] The invention relates to the field of preparation of ceramic water reducers, in particular to a polycarboxylate ceramic water reducer and its preparation method and application. Background technique [0002] With the development of the ceramic industry, ceramic products have occupied an important position in daily life. During ceramic processing, water will be added, but after water and clay are mixed, the clay particles will absorb the added water, reducing the amount of free water in the system. The reduction of free water in the system will increase the viscosity of the slurry, which will make the fluidity of the slurry system worse, the thixotropy of the system will be worse, and the phenomenon of sedimentation will easily occur, which will bring difficulties to the processing of ceramics. [0003] The addition of ceramic dispersant can well release the bound water in the clay particles, the addition of ceramic dispersant can release the bound wat...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C08F220/06C08F220/04C08F2/38C08F4/30C04B33/13
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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