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Amine ether mud-resistant super-early-strength polycarboxylate superplasticizer and preparation method thereof

A technology of strong polycarboxylic acid and mud-resistant type, which is applied in the field of concrete water reducing agent, can solve the problems of poor early strength effect and achieve the effect of increasing mud resistance, low density and high water reducing rate

Active Publication Date: 2021-04-27
KZJ NEW MATERIALS GROUP CO LTD +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0007] In order to solve the problem of poor anti-mud and early-strength effects of the existing polycarboxylate superplasticizers with only a single long side chain or short side chain mentioned in the background technology, the present invention provides an amine-ether anti-mud superplasticizer Early-strength polycarboxylate superplasticizer has the following structural formula:

Method used

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  • Amine ether mud-resistant super-early-strength polycarboxylate superplasticizer and preparation method thereof
  • Amine ether mud-resistant super-early-strength polycarboxylate superplasticizer and preparation method thereof
  • Amine ether mud-resistant super-early-strength polycarboxylate superplasticizer and preparation method thereof

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Experimental program
Comparison scheme
Effect test

Embodiment 1

[0053](1) Weigh the raw material components as follows: Metyl propyl polyoxyethylene ether (molecular weight 4000) 114g, methoxy polyethylene glycol amine (MPEG-NH)2(Molecular weight 3500) 76g, 35g of acrylic, acrylamide 12g, allyl amine 3.3 g, 3-chloropropene 4.8 g, hydrogen-oxygen water 3.0g, sodium hydrogen phosphite, 2.0 g of sulfurgiol, phenylglycerol 1.0g , Deionized water and 32% quality concentration of liquid base.

[0054](2) 3.3 g of allyl amine is dissolved in 120 g of methanol solution, and the temperature to 10 ° C is adjusted, and 8.0 g of acrylamide is added dropwise over nitrogen gas, electromagnetic stirring is 50 h, and the reaction product is subjected to pressure reduction, and the vacuum is maintained. 0.061 MPa, distillation temperature 45 ° C, distilled to the fraction until the fraction was distilled off, and the remaining 15 g of liquid was mixed with 25 g of acrylic acid, and 50 g of deionized water was added as a solution A.

[0055](3) 76 g of methoxy polyethy...

Embodiment 2

[0060](1) Weigh the raw material components according to the weight: Metyl propyl polyoxyethylene ether (molecular weight 4000) 90 g, methoxy polyethylene glycollamine (MPEG-NH2(Molecular weight 3000) 60g, acrylic acid 8g, acrylamide 7.3 g, allyl amine 2.0 g, 3-chloropropylene, 1.0 g of ammonium sulfate, potassium sulfate, 1.8 g of sulfuric glycerol, phenylglycerol 0.5 g, deionized water and 32% quality concentration of liquid base.

[0061](2) 2.0 g of allyl allylamine is dissolved in 100 g of methanol solution, adjusted to 10 ° C, add 3.5 g of acrylamide, electromagnetic stirring at nitrogen, electromagnetic stirring for 48 h, and the reaction product is subjected to pressure reduction, and the vacuum is maintained. 0.061 MPa, distillation temperature of 45 ° C, distillation to the fraction until the fraction was distilled off, and the remaining 9.5 g of liquid was mixed with 5 g of acrylic acid, and 55 g of deionized water was added as a solution A.

[0062](3) In a stirrer, a thermome...

Embodiment 3

[0067](1) Weigh the raw material components according to the following weight: Metyl propyl polyoxyethylene ether (molecular weight 4000) 150 g, methoxy polyethylene glycollamine (MPEG-NH2(Molecular weight 5000) 100g, 35 g of methacrylic acid, 18.4 g of acrylamide, 8.0 g of allyl amine, 4.5 g of ammonium sulfate, ammonium sulfate, ammonium ammonium, 2.5g, Benzoquinone 1.5 g, deionized water and 32% mass concentration of liquid base.

[0068](2) 8.0 g of an allyl amine is dissolved in a 200 g of methanol solution, and the temperature is adjusted to 5 ° C, add 14 g of acrylamide, electromagnetic stirring at a nitrogen gas, and the reaction product is reduced and distilled, and the vacuum is 0.061. MPA, distillation temperature 45 ° C, distilled to the fraction until the fraction was distilled off, and the remaining 28 g of liquid was mixed with 20 g of methacrylic acid, and 60 g of deionized water was added as a solution A.

[0069](3) In a stirrer, a thermometer, a reflux condensate tube (...

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Abstract

The invention relates to the technical field of concrete water reducing agents, in particular to an amine ether mud-resistant super-early-strength polycarboxylate water reducing agent and a preparation method thereof. The amine ether mud-resistant super-early-strength polycarboxylate water reducing agent comprises the following preparation raw materials: methyl allyl polyoxyethylene ether, methoxy polyethylene glycol amine, unsaturated carboxylic acid, 3-chloropropene, allyl amine, acrylamide, an oxidizing agent, a reducing agent, a chain transfer agent, p-benzoquinone, methanol and absolute ethyl alcohol. The amine ether mud-resistant super-early-strength polycarboxylate water reducing agent provided by the invention is low in density of long side chains and high in density of early-strength groups contained in short side chains, so that the early strength of concrete is greatly improved, and positive ions in a molecular structure of the water reducing agent enable the water reducing agent to have good mud resistance.

Description

Technical field[0001]The present invention relates to the technical field of concrete water repellent, and more particularly to an amine ether anti-mud type supermalline polycarboxylic acid water repellent and a preparation method thereof.Background technique[0002]The polycarboxylic acid water-watering agent has high water reduction rate, high-risk, low alkali, green environmental protection, etc., has been widely used in concrete engineering. However, the early intensity of ordinary polycarboxylic acid-based water reducer is slow, especially under low temperature conditions, the common polycarboxylic acid water-watering agent is limited in the use of winter construction and cold environments, visible, promoting early hydration, development of cement Early polycarboxylic acid water repellent has significant technical economic benefits.[0003]About the super early strong polycarboxylic acid water-water, patented CN108192039A employs an ultra-molecular weight polyether monomer as an ac...

Claims

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Application Information

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IPC IPC(8): C08F283/06C08F220/06C08F220/56C08F226/02C08F214/14C04B24/26C04B103/30
CPCC08F283/065C08F283/06C04B24/2694C04B2103/302C08F220/06
Inventor 邵幼哲赖广兴方云辉赖华珍郭元强钟丽娜柯余良林艳梅张小芳潘志峰
Owner KZJ NEW MATERIALS GROUP CO LTD
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