High-applicability polycarboxylic acid type water reducing agent with adjustable slump retaining time, and preparation method thereof

A technology of slump retention time and applicability, applied in the field of high applicability polycarboxylate water reducer and its preparation, can solve the problem of large fluctuations in the fluidity of concrete mixtures, and strong sensitivity to sand and gravel silt content , affecting the mechanical properties of concrete, etc., to achieve the effect of easy control of the reaction process, improvement of work performance and mechanical properties, and moderate water reducing rate

Inactive Publication Date: 2020-06-09
山东惠邦建材科技股份有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Due to the increasing shortage of high-quality sand and gravel resources, the mud content and stone powder content in the sand and gravel are unstable and uncontrollable. It leads to large fluctuations in the fluidity of concrete mixture, slump retention and concrete workability, and affects the mechanical properties of concrete

Method used

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  • High-applicability polycarboxylic acid type water reducing agent with adjustable slump retaining time, and preparation method thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0022] A highly applicable polycarboxylate water reducer with adjustable slump retention time, prepared from the following raw materials in parts by weight: 300 parts of isopentenol polyoxyethylene ether, 10 parts of maleic anhydride, 10 parts of methacrylic acid 20 parts of hydroxyethyl acrylate, 15 parts of hydroxypropyl acrylate, 3 parts of sodium propylene sulfonate, 3 parts of acrylamide, 0.4 parts of acrylmercaptoethanol, 2 parts of hydrogen peroxide, 0.6 parts of ascorbic acid, 2-acrylamide- 3 parts of sodium 2-methylpropene sulfonate, 258 parts of deionized water.

[0023] The above-mentioned preparation method of a highly adaptable polycarboxylate water reducer with adjustable slump retention time comprises the following steps:

[0024] (1) Weigh various raw materials in proportion, first add part of deionized water, isopentenol polyoxyethylene ether, 2-acrylamide-2-methylpropene sulfonate sodium, maleic anhydride and grade A Sodium propylene sulfonate, stir, heat up...

Embodiment 2

[0030] A high applicability polycarboxylate water reducer with adjustable slump time, prepared from the following raw materials in parts by weight: 340 parts of isopentenol polyoxyethylene ether, 25 parts of maleic anhydride, 30 parts of methacrylic acid 40 parts, 40 parts of hydroxyethyl acrylate, 30 parts of hydroxypropyl acrylate, 5 parts of sodium propylene sulfonate, 5 parts of acrylamide, 1.0 part of acrylmercaptoethanol, 4 parts of hydrogen peroxide, 1.2 parts of ascorbic acid, 2-acrylamide- 5 parts of sodium 2-methylpropene sulfonate, 258 parts of deionized water.

[0031] The above-mentioned preparation method of a highly adaptable polycarboxylate water reducer with adjustable slump retention time comprises the following steps:

[0032] (1) Weigh various raw materials in proportion, first add part of deionized water, isopentenol polyoxyethylene ether, 2-acrylamide-2-methylpropene sulfonate sodium, maleic anhydride and grade A Sodium propylene sulfonate, stir, heat up...

Embodiment 3

[0038] A highly applicable polycarboxylate water reducer with adjustable slump retention time, prepared from the following raw materials in parts by weight: 320 parts of isopentenol polyoxyethylene ether, 18 parts of maleic anhydride, 20 parts of methacrylic acid 30 parts of hydroxyethyl acrylate, 17 parts of hydroxypropyl acrylate, 4 parts of sodium propylene sulfonate, 4 parts of acrylamide, 0.7 parts of acrylmercaptoethanol, 3 parts of hydrogen peroxide, 0.9 parts of ascorbic acid, 2-acrylamide- 4 parts of sodium 2-methylpropene sulfonate, 258 parts of deionized water.

[0039] The above-mentioned preparation method of a highly adaptable polycarboxylate water reducer with adjustable slump retention time comprises the following steps:

[0040] (1) Weigh various raw materials in proportion, first add part of deionized water, isopentenol polyoxyethylene ether, 2-acrylamide-2-methylpropene sulfonate sodium, maleic anhydride and grade A Sodium propylene sulfonate, stir, heat up...

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Abstract

The invention discloses a high-applicability polycarboxylic acid type water reducing agent with adjustable slump retaining time, and a preparation method thereof, belonging to the technical field of polycarboxylic acid type water reducing agents. The polycarboxylic acid type water reducing agent provided by the invention is prepared from the following raw materials in parts by weight: 300 to 340 parts of isopentenol polyoxyethylene ether, 10 to 25 parts of maleic anhydride, 10 to 30 parts of A-grade acrylic acid, 20 to 40 parts of hydroxyethyl acrylate, 15 to 30 parts of hydroxypropyl acrylate, 3 to 5 parts of sodium methallyl sulfonate, 3 to 5 parts of acrylamide, 0.4 to 1.0 part of acryloyl mercaptoethanol, 2 to 4 parts of hydrogen peroxide, 0.6 to 1.2 parts of ascorbic acid, 3 to 5 parts of sodium 2-acrylamido-2-methallyl sulfonate and 258 parts of deionized water. According to the invention, the slump retention performance of sandstone concrete with different mud contents and stonepowder contents can be solved, and the working performance and mechanical performance of the concrete can be greatly improved; the produced polycarboxylic acid type water reducing agent can be widelyapplied to common concrete mixing stations and has excellent performance and good economic benefits; and the preparation method is simple in synthesis process, free of heat source, easy to control inreaction process, friendly to environment and free of pollution.

Description

technical field [0001] The invention belongs to the technical field of polycarboxylate-type water-reducers, and in particular relates to a highly applicable polycarboxylate-type water-reducer with adjustable slump retention time and a preparation method thereof. Background technique [0002] Polycarboxylate-type water reducer has excellent properties such as high water reducing rate, good slump retention performance, and high compressive strength ratio, making it more and more widely used in concrete. Due to the increasing shortage of high-quality sand and gravel resources, the mud content and stone powder content in the sand and gravel are unstable and uncontrollable. It leads to large fluctuations in the fluidity of the concrete mixture, slump retention and concrete workability, and affects the mechanical properties of the concrete. Contents of the invention [0003] In view of the above technical problems, the present invention provides a highly applicable polycarboxyl...

Claims

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Application Information

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IPC IPC(8): C08F283/06C08F222/06C08F220/06C08F220/20C08F228/02C08F220/56C08F220/38C08F220/58C04B24/16C04B103/30
CPCC04B24/165C04B2103/302C08F283/065C08F222/06C08F220/06C08F220/20C08F228/02C08F220/56C08F220/38
Inventor 孙希刚陶正良刘学真
Owner 山东惠邦建材科技股份有限公司
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