Polycarboxylate superplasticizer based on double-oxidation-reduction system and preparation method thereof

A technology of polycarboxylate and water reducer, applied in the field of polycarboxylate water reducer based on double redox system and its preparation, can solve the difficulty in ensuring concrete transportation, pumping and pouring construction requirements, and reduce the flow of fresh concrete Improve product conversion rate, high-efficiency water reduction effect, improve water reduction rate and adaptability

Pending Publication Date: 2022-06-07
SHAANXI YOUBANG NEW MATERIAL TECH
View PDF6 Cites 0 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Benefits of technology

This patented describes different methods or techniques for making poly(microcapsule)-water reducer). These processes involve mixing two types of compounds together: one containing carbonyl groups called vinyl dimmers and another containing nitroferrone/iron complex moieties like calcium diazaperoids. By adding these chemical components into the mixture solution, they break down multiple carbon atoms from the dicarbohol chloroform resins formed within them. When this decomposes, there forms three new ones - hexaadisorbilatme, citronitrile, and furocidol. Each type of component helps create stable solutions when mixed properly. Additionally, the use of specific catalyst systems enhances the efficiency of the degradation process while controlling its size range. Overall, this technique allows for efficient preparations of poly(metalocapped water-reducible), nonvolatile hydraulically dispersible products such as dodecyloanones, polysuccines, and copolycaprolactam water-dispersants.

Problems solved by technology

This patented technical problem addressed by this patents relates to developing an effective solution that can be adapted to different types of aggregated material (sand or stone) without losing their effectiveness due to changes made during hydraulic cement production processes.

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
  • Polycarboxylate superplasticizer based on double-oxidation-reduction system and preparation method thereof
  • Polycarboxylate superplasticizer based on double-oxidation-reduction system and preparation method thereof
  • Polycarboxylate superplasticizer based on double-oxidation-reduction system and preparation method thereof

Examples

Experimental program
Comparison scheme
Effect test

preparation example Construction

[0042] The invention also discloses a preparation method of the polycarboxylate water-reducing agent based on a double redox system, in terms of parts by mass, the specific steps are as follows:

[0043] 1) Add 2.5-3.5 parts of acrylic acid and 0.5-1.0 parts of hydroxyethyl acrylate into 7-8 parts of water in turn, and stir to make a small monomer agent;

[0044] 2) After adding 0.04-0.1 part of vitamin C to 7-8 parts of water to dissolve completely, add 0.5-1.1 part of ferrous sulfate and stir to make a double reducing agent;

[0045] 3) Dissolve 0.15-0.3 part of sodium hydroxide in 10-15 parts of water to make neutralizer;

[0046] 4) When adding 34-36 parts of vinyl polyoxyethylene ether to 30-32 parts of water and stirring to dissolve 70-80%, the solution temperature is at 13-19 ° C, and 0.15-0.25 parts of hydrogen peroxide, 0.04-0.09 parts of ammonium persulfate are added in turn and 0.3-0.5 parts of mercaptopropionic acid and continue to stir, the solution temperature i...

Embodiment 1

[0053] Prepare polycarboxylate water-reducing agent according to the following parts by weight, in parts by mass:

[0054] Small monomer agent: 3.2 parts of acrylic acid, 0.8 parts of hydroxyethyl acrylate, 7 parts of water;

[0055] Double reducing agent: 0.04 part of vitamin C, 0.8 part of ferrous sulfate, 7 parts of water;

[0056] Neutralizer: 0.25 parts of sodium hydroxide, 15 parts of water;

[0057] Base material: 35.2 parts of vinyl polyoxyethylene ether, 0.23 part of hydrogen peroxide, 0.06 part of ammonium persulfate, 0.4 part of mercaptopropionic acid, and 30 parts of water.

[0058] Add 3.2 parts of acrylic acid and 0.8 parts of hydroxyethyl acrylate into 7 parts of water in turn, and stir to make a small monomer agent;

[0059] After adding 0.04 part of vitamin C to 7 parts of water to dissolve completely, add 0.8 part of ferrous sulfate and stir to make a double reducing agent;

[0060] Dissolve 0.25 part of sodium hydroxide in 15 parts of water to make a neut...

Embodiment 2

[0065] Prepare polycarboxylate water-reducing agent according to the following parts by weight, in parts by mass:

[0066] Small monomer agent: 2.5 parts of acrylic acid, 0.5 parts of hydroxyethyl acrylate, 8 parts of water;

[0067] Double reducing agent: 0.04 part of vitamin C, 0.52 part of ferrous sulfate, 8 parts of water;

[0068] Neutralizer: 0.15 parts of sodium hydroxide, 15 parts of water;

[0069] Primer: 34 parts of vinyl polyoxyethylene ether, 0.15 part of hydrogen peroxide, 0.04 part of ammonium persulfate, 0.3 part of mercaptopropionic acid, and 30.8 parts of water.

[0070] Add 2.5 parts of acrylic acid and 0.5 part of hydroxyethyl acrylate into 8 parts of water in turn, and stir to make a small monomer agent;

[0071] After adding 0.04 part of vitamin C to 8 parts of water to dissolve completely, add 0.52 part of ferrous sulfate and stir to make a double reducing agent;

[0072] Dissolve 0.15 part of sodium hydroxide in 15 water to make a neutralizer;

[00...

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 polycarboxylic acid water reducing agent based on a double-oxidation-reduction system and a preparation method of the polycarboxylic acid water reducing agent, and belongs to the technical field of water reducing agents. Comprising a base material, a small monomer agent, a dual-reducing agent and a neutralizer, and after the small monomer agent and the dual-reducing agent are added into the base material to react, the neutralizer is supplemented to prepare a polycarboxylate superplasticizer mother solution; the small monomer agent is prepared by dissolving acrylic acid and hydroxyethyl acrylate in water; the dual reducing agent is prepared by dissolving vitamin C and ferrous sulfate in water; the neutralizer is prepared by dissolving sodium hydroxide in water; the backing material is prepared by dissolving a six-carbon macromonomer, hydrogen peroxide, ammonium persulfate and thiohydracrylic acid in water. The prepared water reducing agent mother liquor has good slump retaining performance and water reducing performance, and has good adaptability to concrete gravel materials in different areas.

Description

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

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
OwnerSHAANXI YOUBANG NEW MATERIAL TECH