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High-efficiency water reducing agent for cement paste

A high-efficiency water reducing agent and cement slurry technology, applied in the field of water reducing agent, can solve the problems of poor performance of cement and cement parts, and achieve the effect of high water reducing rate, less dosage and wide application

Inactive Publication Date: 2018-02-02
廖正康
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] The performance of the cement and cement parts prepared by the above water reducing agent is not good

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0037] A superplasticizer for cement slurry, including the following raw materials in parts by weight:

[0038] Polyether 220 20 parts

[0039] 20 parts of maleic anhydride

[0040] Sodium methacrylate sulfonate 5 parts

[0041] 3 parts of methacrylic acid

[0042] Acrylic 3 parts

[0043] 0.3 parts of ammonium persulfate

[0044] 0.3 parts of sodium bicarbonate

[0045] 80 parts of deionized water.

Embodiment 2

[0047] A superplasticizer for cement slurry, including the following raw materials in parts by weight:

[0048] Polyether 220 30 parts

[0049] 30 parts of maleic anhydride

[0050] Sodium methacrylate sulfonate 10 parts

[0051] Methacrylic acid 5 parts

[0052] Acrylic 5 parts

[0053] Ammonium persulfate 0.5 parts

[0054] Sodium bicarbonate 0.5 part

[0055] 100 parts of deionized water.

Embodiment 3

[0057] A superplasticizer for cement slurry, including the following raw materials in parts by weight:

[0058] Polyether 220 25 parts

[0059] 25 parts of maleic anhydride

[0060] Sodium methacrylate sulfonate 7.5 parts

[0061] 4 parts of methacrylic acid

[0062] Acrylic 4 parts

[0063] 0.4 parts of ammonium persulfate

[0064] 0.4 parts of sodium bicarbonate

[0065] 90 parts of deionized water.

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PUM

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Abstract

The invention relates to a high-efficiency water reducing agent for cement paste, and belongs to the technical field of a water reducing agent. The water reducing agent is prepared from 20 to 30 partsof polyether 220, 20 to 30 parts of maleic anhydride, 5 to 10 parts of sodium methallyl sulfonate, 3 to 5 parts of methacrylic acid, 3 to 5 parts of crylic acid, 0.3 to 0.5 part of ammonium persulfate, 0.3 to 0.5 part of sodium bicarbonate and 80 to 100 parts of deionized water. According to the invention, by monomers, such as the polyether, the maleic anhydride and the sodium methallyl sulfonate, under the action of an initiator, the polycarboxylic water reducing agent with an excellent dispersing effect can be prepared through ternary polymerization reaction. The high-efficiency water reducing agent has the advantages of small use quantity, high water reducing rate, wide application range and the like. A cement product prepared by adopting the water reducing agent has the performances of high intensity and high durability.

Description

Technical field [0001] The invention relates to a water reducer, more specifically, the invention relates to a superplasticizer for cement slurry, belonging to the technical field of water reducers. Background technique [0002] Polycarboxylic acid series high-performance water-reducing agent is a kind of surface active agent whose molecular structure is carboxyl-containing graft copolymer. The molecular structure is comb-shaped. It is mainly prepared by free radical copolymerization of unsaturated monomer under the action of initiator. The main chain is polymerized by active monomers containing carboxyl groups, and the side chain is copolymerized by active monomers containing functional functional groups and main link branches. The structure and composition of the polymer chain segment can be artificially controlled by means such as changes in the types and quantities of monomers, process conditions (such as temperature, feeding method, feeding time and other process parameters)...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C08F283/06C08F222/06C08F228/02C08F220/06C04B24/16C04B103/30
CPCC08F283/06C04B24/165C04B2103/302C08F222/06C08F228/02C08F220/06
Inventor 廖正康
Owner 廖正康