Esterified monomer, ligand and conductive slump-retaining polycarboxylic acid water reducer, preparation methods thereof, and conductive slump-retaining graphene dispersion slurry

A technology of monocarboxylic acid and monomer, which is applied in the field of conductive slump-preserving graphene dispersion slurry, which can solve the problem of low probability of contact conductivity and achieve the effects of improving dispersion effect, preventing aggregation, and excellent electrical conductivity

Pending Publication Date: 2021-12-31
KZJ NEW MATERIALS GROUP CO LTD +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0008] The master's thesis "Research on the Electrothermal Performance of CSG Conductive Concrete" (Author: Xie Xin; Supervisor: Wang Ruiyan. Chongqing Jiaotong University, June 16, 2016) discloses a CSG conductive concrete, which uses polycarboxylic acid with high slump The water agent realizes the slump-preserving function, and carbon fiber, steel fiber and graphite are added to realize the conductive function, but the concrete of this invention is composed of conductive materials and slump-preserving water-reducing agents. Since the water-reducing agent is not conductive, the conductive materials are dispersed in the concrete and The probability of contact conductivity is not high

Method used

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  • Esterified monomer, ligand and conductive slump-retaining polycarboxylic acid water reducer, preparation methods thereof, and conductive slump-retaining graphene dispersion slurry
  • Esterified monomer, ligand and conductive slump-retaining polycarboxylic acid water reducer, preparation methods thereof, and conductive slump-retaining graphene dispersion slurry
  • Esterified monomer, ligand and conductive slump-retaining polycarboxylic acid water reducer, preparation methods thereof, and conductive slump-retaining graphene dispersion slurry

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0033] 1. Preparation of esterification monomer

[0034] Put 80 parts of allyl polyethylene glycol (molecular weight is 2500), 20 parts of 2,2':6',2"-terpyridine-4-carboxylic acid, 1 part of concentrated sulfuric acid and 0.2 parts of hydroquinone in a In a reactor containing 300 parts of toluene, react at a constant temperature of 100° C. for 3 hours; distill off the toluene under reduced pressure to obtain the esterified monomer.

[0035] 2. Ligand preparation

[0036] Mix 0.3 parts of L-ascorbic acid, 0.5-0.6 parts of 3-mercaptopropionic acid and 30 parts of deionized water to obtain solution A; mix 25 parts of hydroxyethyl acrylate and 80 parts of methacrylic acid to obtain solution B.

[0037] 130 parts of isopentenyl polyoxyethylene ether (molecular weight is 3500), 10 parts of polyethylene glycol dimethacrylate (molecular weight is 800), 30 parts of the esterified monomer and 200 parts of deionized water are added to In the reactor, stir and heat to 35°C, add 4 parts ...

Embodiment 2

[0043] 1. Preparation of esterification monomer

[0044] 100 parts of allyl polyethylene glycol (molecular weight 1500), 25 parts of 2,2':6',2"-terpyridine-4-carboxylic acid, 3 parts of concentrated sulfuric acid and 1.0 part of p-tert-butylcatechol In a reactor equipped with 300 parts of toluene, react at a constant temperature of 105° C. for 4.5 hours; distill off the toluene under reduced pressure to obtain the esterified monomer.

[0045] 2. Ligand preparation

[0046] Mix 0.3 parts of sodium bisulfite, 0.5 parts of mercaptoacetic acid and 30 parts of deionized water to obtain solution A; mix 26 parts of triethylene glycol diacrylate, 45 parts of methacrylic acid and 40 parts of acrylic acid to obtain solution B .

[0047] 135 parts of isopentenyl polyoxyethylene ether (molecular weight is 3000), 15 parts of polyethylene glycol dimethacrylate (molecular weight is 600), 35 parts of the esterified monomer and 200 parts of deionized water are added to In the reactor, stir ...

Embodiment 3

[0053] 1. Preparation of esterification monomer

[0054] 120 parts of allyl polyethylene glycol (molecular weight 1000), 30 parts of 2,2':6',2"-terpyridine-4-carboxylic acid, 5 parts of concentrated sulfuric acid and 2.0 parts of 2,6-di-tert-butyl P-methylphenol was placed in a reactor containing 300 parts of toluene, and reacted at a constant temperature of 110° C. for 6 hours; the toluene was distilled off under reduced pressure to obtain the esterified monomer.

[0055] 2. Ligand preparation

[0056] Mix 0.4 parts of sodium formaldehyde sulfoxylate, 0.6 parts of dodecyl mercaptan and 30 parts of deionized water to obtain solution A; mix 30 parts of triethylene glycol dimethacrylate and 90 parts of acrylic acid to obtain solution B .

[0057] 140 parts of isopentenyl polyoxyethylene ether (molecular weight is 2500), 20 parts of polyethylene glycol acrylate (molecular weight is 400), 40 parts of the esterification monomer and 200 parts of deionized water are added to the re...

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PUM

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Abstract

The invention relates to the field of polycarboxylic acid water reducing agents, and provides an esterified monomer, a ligand and a conductive slump-retaining polycarboxylic acid water reducer, preparation methods thereof, and a conductive slump-retaining graphene dispersion slurry. The esterified monomer is prepared from allyl polyethylene glycol and 2, 2': 6', 2'-terpyridine-4-formic acid through an esterification reaction. The ligand is formed by polymerizing isopentenyl polyoxyethylene ether, the esterified monomer, unsaturated monocarboxylic acid, unsaturated ester and macrogol ester free radicals. The conductive slump-retaining polycarboxylic acid water reducer is prepared by reacting a ligand with a zinc nitrate solution. The conductive slump-retaining graphene dispersion slurry is prepared by mixing graphene, the conductive slump-retaining polycarboxylic acid water reducer and deionized water. The prepared polycarboxylic acid water reducer is good in adaptability, the slump loss of concrete is small, the special metal complexing structure of the polycarboxylic acid water reducer endows the polycarboxylic acid water reducer with excellent conductivity, and conductive slump-retaining graphene dispersion slurry prepared by compounding the polycarboxylic acid water reducer with graphene is high in stability and has excellent conductivity and slump-retaining performance.

Description

technical field [0001] The invention relates to the field of polycarboxylate water-reducers, in particular to an esterified monomer, a ligand, a conductive slump-retaining polycarboxylate water-reducer, a preparation method thereof, and a conductive slump-retaining graphene dispersion slurry. Background technique [0002] In recent years, with the increasing demand for construction concrete, there are high requirements for admixtures that must be added to concrete, especially in recent years. Development in the direction of environmental protection, high water reduction, high slump retention, and better adaptability to concrete floors. Polycarboxylate superplasticizer is widely used because of its low dosage, high water reducing rate, low concrete shrinkage, and environmental protection. It is called the third generation of high-performance superplasticizer. As the country continues to vigorously develop infrastructure and the requirements for concrete are getting higher an...

Claims

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Application Information

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IPC IPC(8): C08G65/333C08F290/06C08F283/06C08F220/20C08F220/06C08F222/20C04B24/26C04B103/30
CPCC08G65/33396C08F283/065C08F290/062C04B24/2694C04B2103/302C08F220/20C08F220/06C08F222/102Y02W30/91
Inventor 邵幼哲李格丽吴传灯林志群方云辉钟丽娜
Owner KZJ NEW MATERIALS GROUP CO LTD
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