Viscosity-reducing water reducing agent and preparation method and application thereof

A water reducing agent and viscosity reducing technology, applied in the field of viscosity reducing water reducing agent and its preparation, can solve the problems of prolonging construction progress, increasing cost, increasing construction, etc., and achieve the effect of slow flow rate, reduced viscosity and low cost

Inactive Publication Date: 2021-08-03
SHANXI SUNWAY INTION TRADE CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

The method of reducing the viscosity of high-strength concrete by increasing the amount of water-reducing agent will increase the cost of materials used, and at the same time cause the problem of excessive retardation, prolong the progress of construction, and may even cause problems such as bleeding, which will invisibly give Construction has increased a lot of difficulty
R...

Method used

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  • Viscosity-reducing water reducing agent and preparation method and application thereof
  • Viscosity-reducing water reducing agent and preparation method and application thereof
  • Viscosity-reducing water reducing agent and preparation method and application thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0044] Example 1 The main components of synthesizing a novel viscosity-reducing and water-reducing agent are: in parts by weight, 36.69 parts of polyether macromonomer, 3.82 parts of diethylene glycol maleic anhydride monoester monomer, methallyl sulfonic acid 0.092 parts of sodium monomer, 8.45 parts of acrylic monomer, 0.44 parts of initiator, 0.257 parts of reducing agent, 0.257 parts of chain transfer agent, 3.25 parts of pH adjusting solution and 46.75 parts of deionized water.

[0045] Embodiment 1 Synthesizing the preparation method of novel viscosity-reducing and water-reducing agent

[0046] (1) Put 36.69 parts of isopentenol polyoxyethylene ether (TPEG-1250), 0.092 parts of sodium methallyl sulfonate, 26.75 parts of deionized water and 0.44 parts of hydrogen peroxide in reaction flask A, and heat Dissolve at 30°C-40°C and mix uniformly to obtain Polymer I.

[0047] (2) Under normal temperature conditions, 0.257 parts of ascorbic acid (VC), 0.257 parts of β-mercaptop...

Embodiment 2

[0051] Example 2 The main components of synthesizing a novel viscosity-reducing and water-reducing agent are: by weight, 34.08 parts of polyether macromonomer, 7.09 parts of diethylene glycol maleic anhydride monoester monomer, methallyl sulfonic acid 0.085 parts of sodium monomer, 7.85 parts of acrylic monomer, 0.41 parts of initiator, 0.24 parts of reducing agent, 0.24 parts of chain transfer agent, 3.25 parts of pH adjusting solution and 46.75 parts of deionized water.

[0052] Embodiment 2 The preparation method of synthesizing novel viscosity-reducing water-reducing agent

[0053] (1) Put 34.08 parts of isopentenol polyoxyethylene ether (TPEG-1250), 0.085 parts of sodium methallyl sulfonate, 26.75 parts of deionized water and 0.41 parts of hydrogen peroxide in reaction flask A, and heat Dissolve at 30°C-40°C and mix uniformly to obtain Polymer I.

[0054] (2) Under normal temperature conditions, 0.24 parts of ascorbic acid (VC), 0.24 parts of β-mercaptopropionic acid and...

Embodiment 3

[0058] Example 3 The main components of synthesizing a novel viscosity-reducing and water-reducing agent are: in parts by weight, 31.83 parts of polyether macromonomer, 9.93 parts of diethylene glycol maleic anhydride monoester monomer, methallyl sulfonic acid 0.08 parts of sodium monomer, 7.33 parts of acrylic monomer, 0.38 parts of initiator, 0.22 parts of reducing agent, 0.22 parts of chain transfer agent, 3.25 parts of pH adjusting solution and 46.75 parts of deionized water.

[0059] Embodiment 3 Synthesizing the preparation method of novel viscosity-reducing and water-reducing agent

[0060] (1) Put 31.83 parts of isopentenol polyoxyethylene ether (TPEG-1250), 0.08 parts of sodium methallyl sulfonate, 26.75 parts of deionized water and 0.38 parts of hydrogen peroxide in reaction flask A, and heat Dissolve at 30°C-40°C and mix uniformly to obtain Polymer I.

[0061] (2) Under normal temperature conditions, 0.22 parts of ascorbic acid (VC), 0.22 parts of β-mercaptopropion...

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Abstract

The invention relates to a composition for preparing a viscosity-reducing water reducing agent. The composition comprises a polyether macromonomer, a diethylene glycol maleic anhydride monoester monomer, a sodium methylallyl sulfonate monomer, an acrylic acid monomer, and an optional initiator, a reducing agent and a chain transfer agent. According to the novel viscosity-reducing water reducing agent, the polycarboxylic acid water reducing agent with a viscosity reducing function is synthesized in a water solution through a copolymerization reaction of an oxidation-reduction initiating system under the action of initiation of an oxidation-reduction system, a chain transfer agent and the like, and the water reducing agent is applied to concrete engineering and aims at adjusting the thickness of a water film layer of the viscosity-reducing water reducing agent on the surface of cement particles, and realizing a lubricating effect, and thus the viscosity of the concrete is reduced, the working performance of the concrete is improved, and the problems of high viscosity and low flow rate of high-grade concrete are solved.

Description

technical field [0001] The invention belongs to the field of construction, and in particular relates to a viscosity-reducing and water-reducing agent and a preparation method and application thereof. Background technique [0002] With the rapid development of the construction industry, building structures are gradually developing in the direction of super high-rise, large-span and complex structural systems, which put forward higher requirements for the mechanical properties and construction performance of concrete, and greatly promote the construction technology of concrete pumping development of. However, the use of high-strength concrete with a low water-to-cement ratio often brings problems such as high viscosity and slow flow rate of freshly mixed concrete, which makes construction more difficult. Therefore, it is imminent to solve the problem of reducing the viscosity of high-grade concrete. The way to reduce the viscosity of high-strength concrete is mainly achieved...

Claims

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Application Information

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IPC IPC(8): C08F283/06C08F222/20C08F228/02C08F220/06C04B24/16C04B103/30
CPCC08F283/065C04B24/165C04B2103/302C08F222/20C08F228/02C08F220/06
Inventor 马雪英孙天磊
Owner SHANXI SUNWAY INTION TRADE CO LTD
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