Highly adaptive ultralong-slow release slump-retaining agent and normal and low temperature preparation method thereof

An adaptable, slump-preserving agent technology, applied in the field of high-adaptability ultra-long slow-release slump-preventing agent and its normal and low temperature preparation, can solve the problem that the slow-release time can only reach 1-2 hours, and the slump-retaining agent has poor slump-preserving performance , harsh reaction conditions and other problems, to achieve the effect of prolonging the slump retention time, increasing the strength and toughness, and good workability

Active Publication Date: 2018-10-16
SICHUAN TONGZHOU CHEM TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, the current slump-retaining agents generally have the problems of poor slump-retaining performance and slow-release time of products that can only reach 1 to 2 hours. They also commonly suffer from high reaction temperature, expensive raw materials, high production costs, and harsh reaction conditions during production. shortcoming

Method used

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  • Highly adaptive ultralong-slow release slump-retaining agent and normal and low temperature preparation method thereof
  • Highly adaptive ultralong-slow release slump-retaining agent and normal and low temperature preparation method thereof
  • Highly adaptive ultralong-slow release slump-retaining agent and normal and low temperature preparation method thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0027] A highly adaptable ultra-long slow-release slump-retaining agent, including the following raw materials in parts by weight: 390 parts of comonomers, 4.0 parts of oxidizing agents, 0.66 parts of reducing agents, 1.75 parts of chain transfer agents, and 505 parts of deionized water; Monomers include unsaturated polyether macromonomers, unsaturated carboxylic acid monomers, unsaturated carboxylic acid ester monomers, unsaturated phosphate ester monomers and unsaturated amide monomers, and the ratio of their substances is : 1.0:2.28:2.69:1.12:0.21; the consumption of chain transfer agent is preferably 0.58% of unsaturated polyether macromonomer quality, the consumption of oxidizing agent is preferably 1.3% of unsaturated polyether macromonomer quality, the reducing agent The dosage is preferably 0.22% of the mass of the unsaturated polyether macromonomer.

[0028] The normal and low temperature preparation method of the above-mentioned highly adaptable ultra-long slow-relea...

Embodiment 2

[0035] A highly adaptable ultra-long slow-release slump-retaining agent, including the following raw materials in parts by weight: 395 parts of comonomers, 3.6 parts of oxidizing agents, 0.65 parts of reducing agents, 1.85 parts of chain transfer agents, and 505 parts of deionized water; Monomers include unsaturated polyether macromonomers, unsaturated carboxylic acid monomers, unsaturated carboxylic acid ester monomers, unsaturated phosphate ester monomers and unsaturated amide monomers, and the ratio of their substances is : 1.0:2.26:2.60:1.26:0.43; the consumption of chain transfer agent is preferably 0.62% of unsaturated polyether macromonomer quality, the consumption of oxidant is preferably 1.2% of unsaturated polyether macromonomer quality, and the amount of reducing agent The dosage is preferably 0.22% of the mass of the unsaturated polyether macromonomer.

[0036] The normal and low temperature preparation method of the above-mentioned highly adaptable ultra-long slow...

Embodiment 3

[0043] A highly adaptable ultra-long slow-release slump-retaining agent, including the following raw materials in parts by weight: 394 parts of comonomer, 3.6 parts of oxidizing agent, 1.25 parts of reducing agent, 1.75 parts of chain transfer agent, 525 parts of deionized water; Monomers include unsaturated polyether macromonomers, unsaturated carboxylic acid monomers, unsaturated carboxylic acid ester monomers, unsaturated phosphate ester monomers and unsaturated amide monomers, and the ratio of their substances is : 1.0:2.39:2.53:1.04:0.28; the consumption of chain transfer agent is preferably 0.58% of unsaturated polyether macromonomer quality, the consumption of oxidizing agent is preferably 1.2% of unsaturated polyether macromonomer quality, the reducing agent The dosage is preferably 0.42% of the mass of the unsaturated polyether macromonomer.

[0044] The normal and low temperature preparation method of the above-mentioned highly adaptable ultra-long slow-release slump...

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Abstract

The invention discloses a highly adaptive ultralong-slow release slump-retaining agent and a normal and low temperature preparation method thereof. Mainly, polyether macromonomer, unsaturated carboxylic acid monomer, unsaturated carboxylic ester monomer, unsaturated phosphate ester monomer, unsaturated amide monomer, oxidant, reducing agent, chain transfer agent and deionized water carry out freeradical polymerization by aqueous solution at the temperature of 5-25 DEG C, after sodium hydroxide solution is then added to regulate pH value, water is then replenished, and thereby the slump-retaining agent is prepared. The preparation method does not need a heat source, reaction is carried out under normal and low temperatures, equipment is simple, the operability is high, the production efficiency is high, the prepared slump-retaining agent has ultralong slow release capability, slump can be retained for a long time, the adaptability is high, and the performance is excellent.

Description

technical field [0001] The invention belongs to the technical field of concrete admixtures, and in particular relates to a high-adaptability ultra-long slow-release slump-retaining agent and a normal-low temperature preparation method thereof. Background technique [0002] With the rapid development of my country's economy and the improvement of construction level, the requirements for concrete quality are getting higher and higher. Polycarboxylate high-performance water reducer is a new generation of water reducer that has emerged and been applied in my country in recent years, and it is also the first generation of high-performance water reducer. Water agent, polycarboxylate high-performance water reducer has better application performance and promotion value, because of its high water reducing rate, low dosage, strong adaptability of cement, small loss of concrete slump, green and environmental protection, etc. With outstanding performance, it has been widely used in real ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C08F283/06C08F220/20C08F220/58C08F220/06C08F230/02C08F220/56C08F222/14C04B24/24C04B24/16C04B103/30
CPCC04B24/165C04B24/246C04B2103/30C08F283/065C08F220/20C08F222/14
Inventor 万甜明舒豆豆罗率何年杨志飞
Owner SICHUAN TONGZHOU CHEM TECH
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