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High performance polycarboxylate water reducing agent

A water-reducing agent, high-performance technology, used in the field of concrete admixtures, can solve the problems of affecting concrete strength, remodeling concrete, and high slump loss, achieving small slump loss, preventing segregation, high water reduction rate and adaptability sexual effect

Inactive Publication Date: 2018-06-05
ZHEJIANG LAOHUSHAN BUILDING MATERIALS
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, the slump loss of the existing concrete is relatively high, especially when the concrete is transported and pumped under high temperature conditions in summer, the slump loss is even more serious. In order to ensure that the concrete maintains good fluidity and is easy to pump and pour, construction In the process, there is often the phenomenon of adding water to reshape the concrete, which affects the strength of the concrete.

Method used

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  • High performance polycarboxylate water reducing agent
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Examples

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Effect test

Embodiment 1

[0021] A polycarboxylic acid high-performance water reducer, made of the following chemical raw materials in proportion by weight: 65 parts of isobutenol polyoxyethylene ether, 36 parts of isopentenol polyoxyethylene ether, 30 parts of alkylphenol polyoxyethylene ether 27 parts, 27 parts of methallyl polyoxyethylene ether, 20 parts of halogenated fatty acid, 17 parts of sucrose ester, 1 part of sodium allyl sulfonate, 4 parts of sodium persulfate, 10 parts of maleic anhydride, 4 parts of tartaric acid, 6 parts of cinnamic acid, 4 parts of sodium hydroxide, 3 parts of thioglycolic acid, 4 parts of triethanolamine and 1 part of thiourea. The maleic anhydride is hydrolyzed polymaleic anhydride with a molecular weight of 550. The allyl sodium sulfonate is prepared by reacting allyl alcohol and sodium methanesulfonate in a reaction kettle, and is a powdery crystal formed by drying. The sodium hydroxide is an unsaturated solution of sodium hydroxide with a concentration of 2.9% and...

Embodiment 2

[0030] A polycarboxylic acid high-performance water reducer, made of the following chemical raw materials in proportion by weight: 50 parts of isobutenol polyoxyethylene ether, 40 parts of isopentenol polyoxyethylene ether, 38 parts of alkylphenol polyoxyethylene ether 32 parts, 32 parts of methallyl polyoxyethylene ether, 35 parts of halogenated fatty acid, 23 parts of sucrose ester, 3 parts of sodium allyl sulfonate, 15 parts of sodium persulfate, 14 parts of maleic anhydride, 6 parts of tartaric acid, 9 parts of cinnamic acid, 16 parts of sodium hydroxide, 5 parts of thioglycolic acid, 15 parts of triethanolamine and 4 parts of thiourea. The maleic anhydride is hydrolyzed polymaleic anhydride with a molecular weight of 550. The allyl sodium sulfonate is prepared by reacting allyl alcohol and sodium methanesulfonate in a reaction kettle, and is a powdery crystal formed by drying. The sodium hydroxide is an unsaturated solution of sodium hydroxide with a concentration of 3.5...

Embodiment 3

[0039] A polycarboxylate high-performance water reducer, made of the following chemical raw materials in proportion by weight: 57.5 parts of isobutenol polyoxyethylene ether, 38 parts of isopentenol polyoxyethylene ether, 34 parts of alkylphenol polyoxyethylene ether 29.5 parts of methallyl polyoxyethylene ether, 27.5 parts of halogenated fatty acid, 19.5 parts of sucrose ester, 2 parts of sodium allyl sulfonate, 9.5 parts of sodium persulfate, 12 parts of maleic anhydride, 5 parts of tartaric acid, 7.5 parts of cinnamic acid, 10 parts of sodium hydroxide, 4 parts of thioglycolic acid, 9.5 parts of triethanolamine and 2.5 parts of thiourea. The maleic anhydride is hydrolyzed polymaleic anhydride with a molecular weight of 550. The allyl sodium sulfonate is prepared by reacting allyl alcohol and sodium methanesulfonate in a reaction kettle, and is a powdery crystal formed by drying. The sodium hydroxide is an unsaturated solution of sodium hydroxide with a concentration of 3.2...

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Abstract

The invention discloses a high performance polycarboxylate water reducing agent which is prepared from the following materials in parts by weight: isobutenol polyoxyethylene ether, isopentenol polyethylene ether, alkylphenol ethoxylates, methyl allyl polyethenoxy, halogenated fatty acid, sucrose ester, sodium allylsulfonate, sodium persulfate, maleic anhydride, tartaric acid, cinnamic acid, sodiumhydroxide, thioglycollic acid, triethanolamine and thiourea; the high performance polycarboxylate water reducing agent has the advantages of reducing concrete slump loss and improving concrete fluidity.

Description

technical field [0001] The invention relates to the technical field of concrete admixtures, in particular to a polycarboxylate high-performance water reducer. Background technique [0002] Water reducer is an environment-friendly polymer material made of alcohol, ether, ester and various active monomers through esterification graft polymerization. It is used to reduce the It is a concrete admixture with low mixing water consumption, which can significantly improve the comprehensive performance of concrete products such as workability, compactness, strength and durability at a low water-cement ratio. With the continuous development of my country's national economy, correspondingly, my country's construction industry has undergone great changes, and the amount of concrete has continued to increase, which makes concrete admixtures one of the essential components in the construction industry. . Water reducing agent is suitable for commercial concrete, mass concrete, self-leveli...

Claims

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Application Information

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IPC IPC(8): C08F283/06C08F228/02C08F222/06C04B24/16C04B103/30
CPCC04B24/165C04B2103/006C04B2103/302C08F283/065C08F228/02C08F222/06
Inventor 毛华新毛卓荣
Owner ZHEJIANG LAOHUSHAN BUILDING MATERIALS
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