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Cyclodextrin grafted copolymer type ceramic water reducer and preparation method thereof

A technology of graft copolymer and ceramic water reducer, which is applied in the field of cyclodextrin graft copolymer type ceramic water reducer and its preparation, can solve the problems of high industrial production cost and achieve good chemical and thermal stability, The effect of reduced usage and simple synthesis process

Active Publication Date: 2014-12-17
国科广化(南雄)新材料研究院有限公司 +1
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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, polycarboxylate polymer ceramic water reducers are mainly in the research stage

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0044](1) Weigh 4g of α-cyclodextrin (α-CD) and 20g of 3-(2-methacryloyloxyethyldimethylamino)propanesulfonate (DMAPS), and add them to a three-necked flask In; Weigh 1.1g of sodium hypophosphite and dissolve it in 20.00g of water to obtain an aqueous solution of sodium hypophosphite; join the aqueous solution of sodium hypophosphite and 10g of deionized water into the above-mentioned three-necked flask, stir (rotating speed is 1000r / min) Mix well to obtain mixed solution I;

[0045] (2) Dissolve 0.72g of ammonium persulfate into 8.00g of deionized water to obtain ammonium persulfate aqueous solution; at 90°C, add the ammonium persulfate aqueous solution drop by drop (dropping speed 5s / drop) to the mixture Initiate the reaction in Ⅰ, and react for 2 hours to obtain the mixed solution Ⅱ;

[0046] (3) Add 4.8g of 10wt% sodium hypophosphite aqueous solution (wherein the consumption of deionized water is 4.32g) into the mixed solution II, and cool to room temperature under stirri...

Embodiment 2

[0051] (1) Weigh 10g of β-cyclodextrin (β-CD) and 5g of 3-(2-methacryloyloxyethyldimethylamino)propanesulfonate (DMAPS), and add them into a three-necked flask ; Weigh 0.3g sodium hypophosphite and dissolve it in 20.00g water to obtain sodium hypophosphite aqueous solution; join sodium hypophosphite aqueous solution and 10g water in the above-mentioned three-necked flask, stir (rotating speed is 300r / min) mix, obtain Mixture I;

[0052] (2) Dissolve 0.075g of ammonium persulfate in 8.00g of water to obtain an ammonium persulfate solution; at 70°C, add the aqueous solution of ammonium persulfate dropwise at a rate of 10s / drop to the mixed solution I to initiate the reaction, Reacted for 2 hours to obtain mixed solution II;

[0053] (3) Add 1.5g of 10wt% sodium hypophosphite aqueous solution into the mixed solution II, and cool to room temperature under stirring (the stirring speed is 300r / min), to obtain the cyclodextrin graft copolymer type ceramic dehydrating agent. agent; ...

Embodiment 3

[0058] (1) Weigh 8g of hydroxypropyl cyclodextrin and 20g of 3-(2-methacryloyloxyethyldimethylamino)propanesulfonate (DMAPS) and add them into a three-necked flask; weigh 1.1g Potassium hypophosphite was dissolved in 20.00 g of water to obtain an aqueous solution of potassium hypophosphite; the aqueous solution of potassium hypophosphite and 15 g of water were added to the above-mentioned three-necked flask, stirred (rotating at a speed of 500 r / min) and mixed to obtain a mixed solution I.

[0059] (2) Dissolve 0.45g of ammonium persulfate into 8.00g of water to obtain an aqueous ammonium persulfate solution; at 80°C, add the aqueous solution of ammonium persulfate dropwise at a rate of 6 s / drop to the mixed solution I to initiate the reaction , and reacted for 4 hours to obtain a mixture II.

[0060] (3) Add 5.8g of 10wt% sodium hypophosphite aqueous solution into the mixed liquid II, stop heating, and cool to room temperature under stirring (the stirring speed is 500r / min), ...

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Abstract

The invention belongs to the technical field of preparation of ceramic water reducers and discloses a cyclodextrin grafted copolymer type ceramic water reducer and a preparation method thereof. The water reducer is prepared from cyclodextrin or a cyclodextrin derivative, 3-(2-methylacryloyl ethoxyl dimethylamine) propanesulfonate, a chain transfer agent, an initiator, a chain terminator and deionized water. Due to a special molecular structure of cyclodextrin, the water reducer prepared by the preparation method has very good water-reducing and dispersing effects and meanwhile the water reducer which is amphoteric ionic polyelectrolyte is good in chemical property and thermal stability, strong in hydratability and insusceptible to the pH value of a solution. In addition, the water reducer prepared by the preparation method provided by the invention further has an enhancing effect on ceramic.

Description

technical field [0001] The invention belongs to the technical field of preparation of ceramic water reducers, and in particular relates to a cyclodextrin graft copolymer type ceramic water reducer and a preparation method thereof. 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 not large (usually 0.5% to 2%), but the effect is great. The application of ceramic additives and the 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 ceramic superplasticizer is...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C04B35/634C04B35/636
Inventor 王斌谢义鹏黄月文李雅杰郑周杨璐霏
Owner 国科广化(南雄)新材料研究院有限公司
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