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Early strength viscosity reduction type polycarboxylate superplasticizer and preparation method thereof

A technology of polycarboxylic acid and water-reducing agent, which is applied to the early-strength viscosity-reducing polycarboxylate water-reducing agent, in the field of preparation of the early-strength viscosity-reducing polycarboxylate water-reducing agent, can solve the problem of not giving a guiding scheme and other problems, to achieve good early strength and viscosity reduction, good water reduction effect, and construction reduction effect

Inactive Publication Date: 2020-12-04
刘翠芬
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] The above technologies have not given specific guidance on how to make the early-strength viscosity-reducing polycarboxylate superplasticizer have good early-strength and viscosity-reducing effects at the same time

Method used

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  • Early strength viscosity reduction type polycarboxylate superplasticizer and preparation method thereof

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Embodiment 1

[0017] Embodiment 1: the early-strength viscosity-reducing polycarboxylate superplasticizer of the present invention is made of the following raw materials in parts by weight: 90 parts of polyether monomers, namely methallyl alcohol polyoxyethylene ether ( Molecular weight is 800), 1 part of inorganic early strength component A is calcium nitrate, 2 parts of dispersant are sodium dodecylsulfonate, 100 parts of water, 1.6 parts of inorganic early strength component B are 1.2 parts of magnesium fluorosilicate and Combination of 0.4 parts sodium silicate, drop solution X 1 , drop solution X 2 , 2 parts of initiator are hydrogen peroxide; the preparation method of the above-mentioned early-strength viscosity-reducing polycarboxylate water reducer includes the following process steps: ① according to the above-mentioned parts by weight, first mix 90 parts of polyether monomers, 1 part of inorganic early Add strong component A, 2 parts of dispersant, and 50 parts of water into the r...

Embodiment 2

[0018] Embodiment 2: the early-strength viscosity-reducing polycarboxylate superplasticizer of the present invention is made of the following raw materials in parts by weight: 90 parts of polyether monomers, namely methallyl alcohol polyoxyethylene ether ( Molecular weight is 1000), 2 parts of inorganic early strength component A is calcium bicarbonate, 5 parts of dispersant is sodium dodecylsulfonate, 100 parts of water, 1 part of inorganic early strength component B is 0.6 part of magnesium fluorosilicate and 0.4 parts of lithium silicate, dropwise liquid X 1 , drop solution X 2 , 1.5 parts of initiator i.e. hydrogen peroxide; the preparation method of the above-mentioned early-strength viscosity-reducing polycarboxylate water-reducer comprises the following process steps: ① according to the above-mentioned parts by weight, first mix 90 parts of polyether monomers, 2 parts of inorganic early Add strong component A, 5 parts of dispersant, and 50 parts of water into the react...

Embodiment 3

[0019] Embodiment 3: the early-strength viscosity-reducing polycarboxylate superplasticizer of the present invention is made of the following raw materials in parts by weight: 90 parts of polyether monomers, namely methallyl alcohol polyoxyethylene ether ( Molecular weight is 1200), 5 parts of inorganic early-strength component A is calcium acetate, 5 parts of dispersants are fatty alcohol polyoxyethylene ether sodium sulfate, 100 parts of water, 5 parts of inorganic early-strength component B is potassium silicate, dropwise Liquid X 1 , drop solution X 2 , 3 parts of initiator are hydrogen peroxide; the preparation method of the above-mentioned early-strength viscosity-reducing polycarboxylate superplasticizer includes the following process steps: ① according to the above-mentioned parts by weight, first mix 90 parts of polyether monomers, 5 parts of inorganic early Add strong component A, 5 parts of dispersant, and 50 parts of water into the reactor, and dissolve 5 parts of...

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Abstract

The invention relates to an early-strength viscosity-reducing polycarboxylate superplasticizer and a preparation method thereof. The early-strength viscosity-reducing polycarboxylate superplasticizeris prepared from the following raw materials: 90-100 parts of polyether monomer, 1-10 parts of inorganic early-strength component A, 1-5 parts of dispersing agent, 100 parts of water, 1-10 parts of inorganic early-strength component B, a dropwise adding liquid X1, a dropwise adding liquid X2, and 0.5-4.0 parts of initiator, namely hydrogen peroxide, wherein the inorganic early strength component Ais one or more of calcium nitrate, calcium formate, calcium bicarbonate, calcium chloride and calcium acetate, the inorganic early strength component B is one or more of sodium silicate, potassium silicate, lithium silicate and magnesium fluosilicate, the preparation method of the dropwise adding liquid X1 comprises the following steps: dissolving mercaptoacetic acid and sodium formaldehyde sulfoxylate in deionized water to obtain a dropwise adding liquid X1, and the preparation method of the dropwise adding liquid X2 comprises the following steps: dissolving acrylic acid in deionized water to obtain the dropwise adding liquid X2. The invention also provides the preparation method of the early strength viscosity-reducing type polycarboxylate superplasticizer. The inorganic early strengthcomponents and the polyether monomer are introduced, so that the water reducer has early strength and viscosity reduction effects at the same time.

Description

technical field [0001] The invention relates to a polycarboxylate water reducer, in particular to an early-strength viscosity-reducing polycarboxylate water reducer. The invention also relates to a preparation method of the early-strength viscosity-reducing polycarboxylate water reducer. Background technique [0002] In recent years, my country's large-scale construction projects have continued, and the use of precast concrete is extremely eager. Precast concrete also needs to have a certain rate of early strength development to improve formwork turnover, or be suitable for use in low temperature environments to extend its production cycle into the cold season. The high-strength concrete pipe pile is a product that has developed rapidly in recent times and has a wide range of applications. It has the following advantages, such as high strength, strong bearing capacity, and convenient application. It has been applied in many fields. For its production, it is even more impor...

Claims

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Application Information

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IPC IPC(8): C04B24/26C08F283/06C08F220/06C04B103/30
CPCC04B24/2647C04B40/0046C04B2103/302C08F283/065C08F220/06C04B22/085C04B24/16C04B22/126C04B12/04C04B22/106C04B22/00C04B24/04C04B24/166
Inventor 宋欣倪涛汪咏梅刘昭洋王进春刘翠芬
Owner 刘翠芬
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