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Viscosity-reduction polycarboxylate-type water reducer mother liquor, water reducer and preparation method

A technology of viscous polycarboxylic acid and water reducing agent, which is applied in the field of viscosity reducing type polycarboxylic acid series water reducing agent mother liquor, water reducing agent and preparation field, can solve the problems of difficult construction and high viscosity of concrete, and achieves the improvement of market competition. strength, improved slump retention, and reduced viscosity

Inactive Publication Date: 2020-01-17
眉山海螺新材料科技有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0009] The purpose of the present invention is to provide a viscosity-reducing polycarboxylate-based water-reducer mother liquor, a water-reducer and a preparation method to solve the technical problems of high concrete viscosity and difficult construction in the prior art

Method used

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  • Viscosity-reduction polycarboxylate-type water reducer mother liquor, water reducer and preparation method
  • Viscosity-reduction polycarboxylate-type water reducer mother liquor, water reducer and preparation method

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0051] Preparation of viscosity-reducing polycarboxylate water-reducer mother liquor:

[0052] 1.1 Raw materials (by weight):

[0053]47 parts of ether macromers; 4.5 parts of acrylic acid; 0.7 parts of functional small monomers; 0.2 parts of reducing agent; 0.7 parts of hydrogen peroxide; 0.3 parts of chain transfer agent; 75 parts of water.

[0054] 1.2 Preparation method:

[0055] Include the following steps:

[0056] (1) Prepare A solution:

[0057] Weigh 3 parts of acrylic acid, 0.7 parts of functional small monomers, 0.3 parts of chain transfer agent and 25 parts of water, stir and dissolve to make A solution;

[0058] (2) Configure B solution:

[0059] Weigh 0.2 parts of reducing agent; dissolve in 15 parts of deionized water, stir and dissolve to make B solution;

[0060] (3) Add 35 parts of deionized water into the reaction kettle, and then add 47 parts of ether macromonomer under stirring; heat to 30°C, and keep the temperature at 30°C; after all dissolve, add 1...

Embodiment 2

[0067] Preparation of viscosity-reducing polycarboxylate water-reducer mother liquor:

[0068] 2.1 Raw materials:

[0069] 50 parts of ether macromonomer; 3.5 parts of acrylic acid; 0.8 parts of functional small monomer; 0.1 part of reducing agent; 0.6 part of hydrogen peroxide; 0.4 part of chain transfer agent; 60 parts of water.

[0070] 2.2 Preparation method:

[0071] Include the following steps:

[0072] (1) Prepare A solution:

[0073] Weigh 2 parts of acrylic acid, 0.8 parts of functional small monomers, 0.4 parts of chain transfer agent and 20 parts of water, stir and dissolve to make A solution;

[0074] (2) Configure B solution:

[0075] Weigh 0.1 part of reducing agent, dissolve in 10 parts of deionized water, stir and dissolve to make B solution;

[0076] (3) Add 30 parts of deionized water into the reaction kettle, and then add 50 parts of ether macromonomer under stirring; heat to 25°C, and keep the temperature at 25°C; after all dissolve, add 1.5 parts of a...

Embodiment 3

[0083] Preparation of viscosity-reducing polycarboxylate water-reducer mother liquor:

[0084] 3.1 Raw materials:

[0085] 45 parts of ether macromers; 6.6 parts of acrylic acid; 0.5 parts of functional small monomers; 0.3 parts of reducing agent; 0.8 parts of hydrogen peroxide; 0.2 parts of chain transfer agent; 85 parts of water.

[0086] 3.2 Preparation method:

[0087] Include the following steps:

[0088] (1) Prepare A solution:

[0089] Weigh 5 parts of acrylic acid, 0.5 part of functional small monomer, 0.2 part of chain transfer agent and 30 parts of water, stir and dissolve to make A solution;

[0090] (2) Configure B solution:

[0091] Weigh 0.3 parts of reducing agent; dissolve in 20 parts of deionized water, stir and dissolve to make B solution;

[0092] (3) Add 35 parts of deionized water into the reaction kettle, and then add 45 parts of ether macromonomer under stirring; heat to 35°C, and keep the temperature at 35°C; after all dissolve, add 1.6 parts of ac...

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Abstract

The invention provides a viscosity-reducing polycarboxylate-type water reducer mother liquor, a water reducer and a preparation method. The invention aims to overcome the technical problems of large viscosity of concrete and difficult construction in the prior art. The water reducer mother liquor is prepared from the following raw materials in parts by weight: 45-50 parts of an ether macromonomer,3.5-6.6 parts of acrylic acid, 0.5-0.8 part of a functional small monomer, 0.1-0.3 part of a reducing agent, 0.6-0.8 part of hydrogen peroxide, 0.2-0.4 part of a chain transfer agent and 60-85 partsof water. Concrete using the water reducer is greatly reduced in viscosity and well improved in softness and wrapping property, and the technical problems that the viscosity of the concrete is large and construction is difficult are solved; meanwhile, the slump retaining capacity of the polycarboxylate-type water reducer is obviously improved; and after the polycarboxylate-type water reducer is added, the collapse time of the concrete is obviously shortened, with an amplitude reaching 100%.

Description

technical field [0001] The invention relates to a water reducer, in particular to a mother liquid of a viscosity-reducing polycarboxylate water reducer, a water reducer and a preparation method. Background technique [0002] The competition in the concrete industry is fierce and there is a large demand for concrete in the market. In order to enhance their market competitiveness, each concrete commercial concrete station has worked hard to reduce materials and costs, mainly reflected in low water consumption and high water-reducing agents to reduce water consumption. The glue ratio can save the amount of gelling material and achieve the purpose of cost reduction. At the same time, with the time-limited regulation of sand and stone mining, the resources of riverbed, sand and pebbles are scarce, and the use of natural mine sand and stone has become normal. The result of many factors is that the viscosity of the concrete mixture is getting higher and higher, and the flow is slo...

Claims

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Application Information

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IPC IPC(8): C08F283/06C08F220/06C08F220/58C08F220/56C08F4/40C08F2/38C04B24/16C04B24/26C04B103/30
CPCC04B24/165C04B24/2694C04B2103/302C08F2/38C08F4/40C08F283/065C08F220/06C08F220/56
Inventor 吴小波张冲余志全韩礼熊玉兰曾君司宏振李成勇李涛
Owner 眉山海螺新材料科技有限公司
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