Looking for breakthrough ideas for innovation challenges? Try Patsnap Eureka!

A kind of concrete water reducing agent and preparation method thereof

A concrete water reducing agent and catalyst technology, applied in the field of concrete additives, can solve the problems of low requirements for equipment and reaction conditions, poor plasticizing effect, poor water reduction, etc., and achieve low requirements for equipment and reaction conditions, plasticizing performance. Excellent, simple component effect

Active Publication Date: 2020-12-15
深圳市中兆荣新材料有限公司
View PDF5 Cites 0 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0006] In order to overcome the defects in the prior art, the present invention provides a concrete water reducer and its preparation method, the preparation method is simple and easy, the raw materials are easy to obtain, the price is low, the requirements for equipment and reaction conditions are not high, and it is suitable for industrial production; The concrete water-reducing agent prepared by the preparation method overcomes the defects of the traditional water-reducing agent such as single function, large dosage, poor water-reducing performance, poor plasticizing effect, and easy deterioration, and has a more significant water-reducing effect and a higher dosage. Less, better plasticizing performance, multiple functions, and no obvious negative impact on the performance of reinforced concrete

Method used

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
View more

Image

Smart Image Click on the blue labels to locate them in the text.
Viewing Examples
Smart Image
  • A kind of concrete water reducing agent and preparation method thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0028] A concrete water-reducing agent, made from the following raw materials by weight: 10 parts of succinimide-based polycarboxylic acid copolymers, 10 parts of hexamethylenetetraamine-based naphthalene sulfonate, and 5 parts of isopropanol , 40 parts of water.

[0029] The preparation method of the succinimide-based polycarboxylic acid copolymer, comprising the following steps:

[0030] 1) 10 g of vinylsulfonyl chloride, 13 g of N-hydroxymethylsuccinimide, and 3 g of anhydrous pyridine were dissolved in 40 g of dichloromethane to form a solution, and the reaction was stirred under an ice-water bath for 6 hours, and then the dichloride was removed by rotary evaporation. Methane to obtain a succinimide-based polymerized monomer;

[0031] 2) Dissolve 5 g of succinimide-based polymerized monomers, 10 g of methacrylic acid, and 10 g of propylene sulfonic acid prepared in step 1) in 40 g of dimethyl sulfoxide to form a solution, and then add azobisin to the solution. 0.1 g of n...

Embodiment 2

[0035] A concrete water-reducing agent, made from the following raw materials by weight: 13 parts of succinimide-based polycarboxylic acid copolymers, 13 parts of hexamethylenetetraamine-based naphthalene sulfonate, and 7 parts of isopropanol , 43 parts of water.

[0036] The preparation method of the succinimide-based polycarboxylic acid copolymer, comprising the following steps:

[0037] 1) 10 g of vinylsulfonyl chloride, 14 g of N-hydroxymethylsuccinimide, and 3.5 g of triethylamine were dissolved in 45 g of tetrahydrofuran to form a solution, and the reaction was stirred in an ice-water bath for 6.5 hours, and then the tetrahydrofuran was removed by rotary evaporation to obtain a solution. Succinimide-based polymerized monomer;

[0038] 2) Dissolve 5 g of succinimide-based polymerized monomer, 10 g of methacrylic acid, and 10 g of propylene sulfonic acid prepared in step 1) in 45 g of N,N-dimethylformamide to form a solution, and then add the solution to the solution. Ad...

Embodiment 3

[0042] A concrete water-reducing agent is made from the following raw materials by weight: 15 parts of succinimide-based polycarboxylic acid copolymers, 13 parts of hexamethylenetetraamine-based naphthalene sulfonate, and 8 parts of isopropanol , 47 parts of water.

[0043] The preparation method of the succinimide-based polycarboxylic acid copolymer, comprising the following steps:

[0044] 1) Dissolve 10 g of vinylsulfonyl chloride, 14.2 g of N-hydroxymethylsuccinimide, and 4.2 g of N,N-diisopropylethylamine in 52 g of dichloromethane to form a solution, and stir the reaction in an ice-water bath. After 7 hours, the dichloromethane was removed by rotary evaporation to obtain a succinimide-based polymerized monomer;

[0045] 2) Dissolve 5 g of succinimide-based polymerized monomers, 10 g of methacrylic acid, and 10 g of propylene sulfonic acid prepared in step 1) in 53 g of N-methylpyrrolidone to form a solution, and then add azobis to the solution. Isobutyronitrile 0.2g, s...

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to View More

PUM

No PUM Login to View More

Abstract

The invention discloses a concrete water reducer which is prepared from the following raw materials in parts by weight: 10-20 parts of succinimide polycarboxylic acid copolymer, 10-15 parts of hexamine naphthalene sulfonate, 5-10 parts of isopropanol and 40-50 parts of water. A preparation method of the concrete water reducer comprises the following steps of uniformly mixing the succinimide polycarboxylic acid copolymer, hexamine naphthalene sulfonate, isopropanol and the water, and stirring for reaction for 3-5h at 40-50 DEG C to form the concrete water reducer. The concrete water reducer hasa more significant water reducing effect, is smaller in mixing amount, better in plasticity and multifunctional and has no obvious negative effect on the performance of a reinforced concrete body.

Description

technical field [0001] The invention relates to the technical field of concrete additives, in particular to a concrete reducing agent and a preparation method thereof. Background technique [0002] In recent years, with the rapid economic development and the advancement of the urban-rural integration process, the scale of major infrastructure projects represented by these high-rise buildings is unprecedented, all of which are closely related to concrete materials. The quality of concrete performance directly determines the quality of the project, and the use of concrete additives is inseparable from the use of concrete additives for concrete to exert excellent performance. There are many existing concrete additives, such as waterproofing agent, antifreezing agent, accelerator, retarder, early strength agent, water reducing agent and so on. All kinds of additives can exert their own single function. When multi-component additives are added at the same time, due to the proble...

Claims

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to View More

Application Information

Patent Timeline
no application Login to View More
Patent Type & Authority Patents(China)
IPC IPC(8): C04B24/20C08F228/02C08F220/06C04B103/30
CPCC04B40/0046C04B2103/302C08F220/06C08F228/02C04B24/163C04B24/20C04B24/026C04B22/002
Inventor 董廷显
Owner 深圳市中兆荣新材料有限公司
Who we serve
  • R&D Engineer
  • R&D Manager
  • IP Professional
Why Patsnap Eureka
  • Industry Leading Data Capabilities
  • Powerful AI technology
  • Patent DNA Extraction
Social media
Patsnap Eureka Blog
Learn More
PatSnap group products

Browse by: Latest US Patents, China's latest patents, Technical Efficacy Thesaurus, Application Domain, Technology Topic, Popular Technical Reports.

© 2024 PatSnap. All rights reserved.Legal|Privacy policy|Modern Slavery Act Transparency Statement|Sitemap|About US| Contact US: help@patsnap.com