Comb type polycarboxylic acid efficient ceramic water reducer and preparation method and application thereof

A technology of comb-shaped polycarboxylic acid and ceramic water-reducer, which is applied in the field of comb-shaped polycarboxylic acid-type high-efficiency ceramic water-reducer and its preparation, can solve the problems of high industrial production costs, and achieve increased repulsion, high reinforcement, Increase the effect of mutual hindrance

Inactive Publication Date: 2014-06-04
GUANGZHOU CHEM CO LTD CHINESE ACADEMY OF SCI
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, due to the high cost of industrial production, polycarboxy

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0044] Example 1: Preparation of comb-shaped polycarboxylic acid type high-efficiency ceramic water reducer

[0045] (1) Weigh 14.41g of acrylic acid, 4.00g of isopentenol polyoxyethylene ether, and 4.00g of sodium methacrylate sulfonate, and add them into a three-necked flask; weigh 8.00g of sodium hydroxide, and dissolve them in 20.00g of water under stirring , to obtain an aqueous solution of sodium hydroxide; weigh 1.34 g of sodium hypophosphite and dissolve it in 15.00 g of water to obtain an aqueous solution of sodium hypophosphite; add the aqueous solution of sodium hydroxide and aqueous solution of sodium hypophosphite to the above-mentioned three-necked flask simultaneously to obtain Mixed solution I, the pH value of mixed solution I is 7, stir and heat mixed solution I to 90°C.

[0046] (2) Dissolve 0.1056g of ammonium persulfate into 8.00g of water, and add the ammonium persulfate aqueous solution dropwise to the mixed solution I to initiate the reaction, and react at...

Embodiment 2

[0051] Example 2: Preparation of comb-shaped polycarboxylic acid type high-efficiency ceramic water reducer

[0052] (1) Weigh 14.42g of acrylic acid, 4.00g of allyl alcohol polyoxyethylene ether, and 4.00g of sodium methacrylate sulfonate, and add them into a three-necked flask; weigh 8.00g of sodium hydroxide, dissolve them in 15.00g of water under stirring, Obtain an aqueous solution of sodium hydroxide; weigh 1.34 g of sodium hypophosphite and dissolve it in 15.00 g of water to obtain an aqueous solution of sodium hypophosphite; add the aqueous solution of sodium hydroxide and aqueous solution of sodium hypophosphite to the above-mentioned three-necked flask simultaneously to obtain a mixed Liquid I, the pH of the mixed liquid I is 7, stir and heat the mixed liquid I to 90°C.

[0053] (2) Dissolve 0.1057g of ammonium persulfate into 10.00g of water, and add the ammonium persulfate aqueous solution dropwise to the mixed solution I to initiate the reaction, and react at 90°C...

Embodiment 3

[0058] Example 3: Preparation of comb-shaped polycarboxylic acid type high-efficiency ceramic water reducer

[0059] (1) Weigh 14.41g of acrylic acid, 8.00g of isopentenol polyoxyethylene ether, and 5.00g of sodium methacrylate sulfonate, and add them into a three-neck flask; weigh 8.00g of sodium hydroxide, and dissolve them in 20.00g of water under stirring , to obtain an aqueous solution of sodium hydroxide; Weigh 1.38 g of sodium hypophosphite and dissolve it in 15.00 g of water to obtain an aqueous solution of sodium hypophosphite; add the aqueous solution of sodium hydroxide and aqueous solution of sodium hypophosphite to the above-mentioned three-necked flask simultaneously to obtain Mixed solution I, the pH value of mixed solution I is 7, stir and heat mixed solution I to 80°C.

[0060] (2) Dissolve 0.1285g of ammonium persulfate into 8.00g of water, and add the ammonium persulfate aqueous solution dropwise to the mixed solution I to initiate the reaction, and react at...

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PUM

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Abstract

The invention belongs to the technical field of preparation of ceramic water reducers, and discloses a comb type polycarboxylic acid efficient ceramic water reducer and a preparation method and an application thereof. The method comprises the following steps: carrying out a reaction on a macromolecular monomer, sodium methylacrylsulfonate, acrylic acid, a neutralizer and a chain transfer agent under initiation by an initiator; terminating the reaction by a chain terminator to obtain the comb type polycarboxylic acid efficient ceramic water reducer. According to the obtained comb type polycarboxylic acid efficient ceramic water reducer, a lot carboxylate group ions and sulfonate group ions exist on the molecular chain on one hand, so that the zeta potential and the repulsive interaction between clay particles are increased; on the other hand, a long side chain of polyoxyethylene ether is contained to form the comb structure, so that the mutual inhibition among the clay particles is increased, and the reducer has a better water reducing effect. The reducer has a certain wear-assistant effect to a ceramic earth material and has a remarkable reinforcing effect to a ceramic biscuit, and use of a grinding aid and a reinforcer in the ceramic preparation process can be reduced. The preparation method provided by the invention is simple in synthetic process and easy for industrialized production.

Description

technical field [0001] The invention belongs to the technical field of preparation of ceramic water reducers, in particular to a comb-shaped polycarboxylic acid type high-efficiency ceramic water reducer and its preparation method and application. Background technique [0002] Ceramic additives are a general term for additives added in ceramic industry production to meet process requirements and performance needs. The amount of ceramic additives used in production is small (usually 0.5-2%), but the effect is great. The application of ceramic additives and the research and development of various new additives have become an important part of the development of ceramic industry. According to the function of ceramic additives, ceramic additives can be divided into water reducers, plasticizers, adhesives, wetting agents, defoamers, preservatives, anti-sedimentation agents, mineralizers and other additives. [0003] As a widely used ceramic additive, the main function of cerami...

Claims

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Application Information

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IPC IPC(8): C08F290/06C08F220/06C08F228/02C08F2/38C04B35/634
Inventor 王斌谢义鹏刘化珍严杰李雅杰黄月文康树涛
Owner GUANGZHOU CHEM CO LTD CHINESE ACADEMY OF SCI
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