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

Chitosan sodium sulfonate containing concrete synergist and preparation method thereof

A technology containing sodium chitosan sulfonate and a concrete synergist is applied in the field of concrete-like additives, which can solve the problems of difficulty in ensuring economical efficiency and workability, inability to effectively exert the strength of cement, and difficulty in concrete functioning again. The effect of pollution-free and clean production process, saving cement consumption and good compatibility

Active Publication Date: 2017-06-30
华海菲菲(河北)混凝土外加剂有限公司
View PDF3 Cites 9 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Research data on cement hydration degree at home and abroad show that about 20% to 30% of cement in concrete does not participate in the hydration reaction in conventional environments, and only plays the role of filling fine aggregates, which cannot effectively exert the strength of cement, resulting in great waste of resources
On the other hand, because different water reducing agents have different influence mechanisms on cement adsorption, etc., after being mixed to a certain extent, it is difficult to work on concrete again, and its economical efficiency and construction performance are difficult to be guaranteed.

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
  • Chitosan sodium sulfonate containing concrete synergist and preparation method thereof
  • Chitosan sodium sulfonate containing concrete synergist and preparation method thereof
  • Chitosan sodium sulfonate containing concrete synergist and preparation method thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0045] In the present embodiment, the chitosan derivative concrete synergist is made of the following raw material components in parts by weight:

[0046]

[0047] The concrete preparation method of above-mentioned synergist, realizes by following steps:

[0048] (c1) After adding 16 parts of chitosan sodium sulfonate, 7 parts of sodium hydroxide and 48 parts of water into the reactor, start stirring, and start to heat up, and react for 2 hours after the temperature reaches 95°C;

[0049] (c2) Add 18 parts of allyl glycidyl esters and 6 parts of (3-glycidoxypropyl) allyloxydimethoxysilane in the reactor, and start to drop the mass percent concentration of 2% sodium persulfate solution, the sodium persulfate solution is prepared from 0.1 parts of sodium persulfate and 4.9 parts of water; the dropping time is controlled at 3 hours, and the temperature is controlled at 108°C during the dropping; keep the temperature after the dropping Continue to react for 3 hours, cool down ...

Embodiment 2

[0051] A kind of concrete synergist containing chitosan sodium sulfonate of the present invention, by weight, is made of following raw material component:

[0052]

[0053] A kind of preparation method of the concrete synergist containing chitosan sodium sulfonate of the present invention is realized through the following steps:

[0054] (d1) After adding 17 parts of chitosan sodium sulfonate, 8 parts of sodium hydroxide and 41 parts of water into the reactor, start stirring, and start heating and heating until the temperature reaches 98° C. and then react for 2.5 hours;

[0055] (d2) Add 17 parts of allyl polyoxyethylene epoxy ether and 7 parts of (3-glycidoxypropyl) allyloxydimethoxysilane to the reactor, and start dropping after adding A sodium persulfate solution with a mass percentage concentration of 3%, which is prepared from 0.3 parts of sodium persulfate and 9.7 parts of water; the dropping time is controlled at 3 hours, and the temperature is controlled at 110°C d...

Embodiment 3

[0057] A kind of concrete synergist containing chitosan sodium sulfonate of the present invention, by weight, is made of following raw material component:

[0058]

[0059] A kind of preparation method of the concrete synergist containing chitosan sodium sulfonate of the present invention is realized through the following steps:

[0060] (e1) Add 18 parts of chitosan sodium sulfonate, 8 parts of sodium hydroxide and 46 parts of water into the reaction kettle, start stirring, and start to heat up, until the temperature reaches 101° C., react for 3.5 hours;

[0061] (e2) Add 17 parts of allyl polyoxyethylene polyoxypropylene epoxy ether and 7 parts of (3-glycidoxypropyl) allyloxydimethoxysilane to the reactor, after adding Start to add dropwise the potassium persulfate solution with a concentration of 6% by mass, which is prepared from 0.3 parts of potassium persulfate and 4.7 parts of water; the time for dropping is controlled at 3.5 hours, and the temperature is controlled ...

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

PropertyMeasurementUnit
specific surface areaaaaaaaaaaa
compressive strengthaaaaaaaaaa
compressive strengthaaaaaaaaaa
Login to View More

Abstract

The invention discloses a chitosan sodium sulfonate containing concrete synergist and a preparation method thereof, and belongs to the field of a concrete additive. The synergist comprises chitosan sodium sulfonate, inorganic base, an epoxy compound, (3-epoxy propoxy propyl) allyloxy dimethoxy silicane, an initiator and water, wherein the initiator is a mixture made from one or more than two of sodium persulfate, potassium persulphate or ammonium persulfate. The preparation method comprises: adding weighed chitosan sodium sulfonate, inorganic base and water to a reaction vessel, then adding the epoxy compound and (3-epoxy propoxy propyl) allyloxy dimethoxy silicane to the reaction vessel; and adding the initiator to obtain the concrete synergist. The synergist improves the dispersity of cement particles, stimulates the action of cement, allows the hydration reaction to be fully carried out, improves the comprehensive properties of concrete, raises the strength level of concrete, saves the concrete consumption by about 10%, and reduces the production cost of concrete.

Description

technical field [0001] The invention relates to the field of concrete-like additives, in particular to a concrete synergist containing sodium chitosan sulfonate and a preparation method thereof. Background technique [0002] Because of a series of advantages, such as superior plasticity, good water resistance, excellent durability and very competitive economy, concrete has become the most widely used material in the world. In the next few decades and the foreseeable future, it will still be one of the most important engineering structural materials, especially for contemporary China in the transition period, where industrialization is accelerating and urbanization is in the ascendant, and the scale of infrastructure will be higher than World average speed development. Ready-mixed concrete is the main form of concrete production so far, and more than 70% of the ready-mixed concrete has a strength grade of C25-C35. The improvement of concrete properties of this strength leve...

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 Applications(China)
IPC IPC(8): C04B24/42C04B28/04
CPCC04B28/04C04B40/0039C04B2201/50C04B24/168C04B22/062C04B24/045C04B24/42C04B22/14C04B24/32C04B18/141C04B18/08C04B14/06C04B14/02
Inventor 刘剑锋郑福尔陈珍喜郑文国王伟锋朱旭东
Owner 华海菲菲(河北)混凝土外加剂有限公司
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