Unlock instant, AI-driven research and patent intelligence for your innovation.

A kind of construction concrete made of modified hydrotalcite synergistically foaming and its preparation method

A technology of concrete and modified water, which is applied in the field of material processing, can solve the problems of insufficient foam concrete strength, unstable foam effect, and limited use fields, etc., and achieve the effects of easy large-scale industrial production, stable properties, and increased strength

Active Publication Date: 2019-11-05
杭州鼎昇建材有限公司
View PDF3 Cites 0 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] Aiming at the deficiencies of the prior art, the present invention provides a kind of building concrete co-foamed by modified hydrotalcite and its preparation method, thereby solving the technical problems that the strength of foamed concrete is insufficient and the foaming effect is unstable due to the use of vegetable additives, and The production cost of using animal additives is high, which limits the technical problems in the field of use

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

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0026] (1) Graft modification of hydrotalcite: first, immerse 3 parts by weight of layered structure hydrotalcite with a particle size of 300 microns in 0.2mol / L nitric acid, heat the nitric acid to 80°C, react for 4 hours, filter and immerse into 2 parts by weight of acrylic acid, through the anion replacement process, the time of the anion replacement process is 5 hours, and the reaction temperature is 45 ° C, so that the acrylic acid intercalation enters the interlayer of hydrotalcite, and then the intercalated hydrotalcite is placed in 5 weight After mixing ammonia water, keep the temperature of the reaction environment not exceeding 60°C, stir continuously during the reaction, and the stirring speed is 15 rpm, and the hydrotalcite intercalated with ammonium acrylate is obtained through the reaction. After the polymerization reaction of ammonium acrylate, ammonium polyacrylate is completed. grafting reaction;

[0027] (2) Preparation of foam: mixing and stirring the modifi...

Embodiment 2

[0032] (1) Graft modification of hydrotalcite: First, immerse 10 parts by weight of layered structure hydrotalcite with a particle size of 60 microns in 1.3mol / L nitric acid, heat the nitric acid to 50°C, react for 1 hour, filter and immerse into 2.5 parts by weight of acrylic acid, through the anion replacement process, the time of the anion replacement process is 2.5 hours, the reaction temperature is 45 ° C, so that the acrylic acid is intercalated into the interlayer of hydrotalcite, and then the intercalated hydrotalcite is placed in 2 weight After parting ammonia water, keep the temperature of the reaction environment not exceeding 60°C, keep stirring during the reaction process, the stirring speed is 12 rpm, and react to obtain ammonium acrylate-intercalated hydrotalcite. After the polymerization reaction of ammonium acrylate, ammonium polyacrylate is completed. grafting reaction;

[0033] (2) Preparation of foam: Mix and stir the modified hydrotalcite, 10 parts by weig...

Embodiment 3

[0038] (1) Graft modification of hydrotalcite: first immerse 5 parts by weight of layered structure hydrotalcite with a particle size of 120 microns in 0.5mol / L nitric acid, heat the nitric acid to 60°C, react for 3 hours, filter and immerse into 4 parts by weight of acrylic acid, and through the anion replacement process, the time of the anion replacement process is 5 hours, and the reaction temperature is 30 ° C, so that the acrylic acid is intercalated into the interlayer of hydrotalcite, and then the intercalated hydrotalcite is placed in 5 weight After mixing ammonia water, keep the temperature of the reaction environment not exceeding 60°C, stir continuously during the reaction, and the stirring speed is 15 rpm, and the hydrotalcite intercalated with ammonium acrylate is obtained through the reaction. After the polymerization reaction of ammonium acrylate, ammonium polyacrylate is completed. grafting reaction;

[0039] (2) Foam preparation: Mix and stir the modified hydrot...

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
particle diameteraaaaaaaaaa
densityaaaaaaaaaa
compressive strengthaaaaaaaaaa
Login to View More

Abstract

The present invention provides a kind of building concrete co-foamed by modified hydrotalcite and its preparation method. Polyacrylamide is used to modify the layered hydrotalcite, and then the modified hydrotalcite is stirred and mixed with vegetable protein foaming agent and water. Foam is obtained; then the foam is added to the cement slurry prepared by stirring cement, fly ash, admixture, etc., and the foam is poured, and the foam concrete is obtained after demoulding and curing. The method provided by the present invention overcomes the technical problems that the use of plant-based additives will cause insufficient foam concrete strength and unstable foam effect, and the use of animal-based additives has high production costs, which limits the technical defects in the field of use, and the modified hydrotalcite absorbs water. The ability is stronger, a large number of water molecules enter the interlayer of hydrotalcite to increase the interlayer distance, and the expanded hydrotalcite and foaming agent work together to have a good foaming effect on concrete. At the same time, adding mineral foaming agent can improve the strength of concrete to a certain extent.

Description

technical field [0001] The invention relates to the field of material processing, in particular to a building concrete co-foamed by modified hydrotalcite and a preparation method thereof. Background technique [0002] Foamed concrete, also known as foamed cement, lightweight concrete, etc., is a new type of building energy-saving material that is waste-friendly, environmentally friendly, energy-saving, inexpensive and non-combustible. Lightweight concrete (foam concrete) is formed by introducing air or nitrogen, carbon dioxide, oxygen and other gases into the concrete slurry according to the application needs through chemical or physical means, and after reasonable maintenance and molding, it is formed to contain a large number of small closed pores, and Concrete products of considerable strength. Foam concrete belongs to the bubble-like thermal insulation material, and its outstanding feature is the formation of closed foam pores inside the concrete, which makes the concre...

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): C04B28/00C04B38/10C01F7/00C04B111/40
CPCC04B28/00C04B38/10C04B2201/50C04B2201/20C04B2201/32C04B2111/40C01F7/785C04B14/06C04B18/08C04B2103/302C04B22/06C04B24/14
Inventor 陈庆昝航
Owner 杭州鼎昇建材有限公司