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A lightweight foam concrete capable of absorbing a large amount of decoration pollutants

A lightweight foam and pollutant technology, applied in the field of lightweight foam concrete, can solve problems such as poor treatment effect and formaldehyde content rebound, and achieve the effect of improving absorption and decomposition capacity, and promoting absorption and decomposition.

Active Publication Date: 2021-04-30
ZHENGZHOU UNIVERSITY OF AERONAUTICS
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] At present, there are four reliable treatment methods for formaldehyde: photocatalytic oxidation method, metal oxidant method, activated carbon adsorption method and ozone adsorption method. Features: Although the effect of short-term treatment is obvious, the formaldehyde content will rebound after a certain period of time, and the treatment effect is not good

Method used

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  • A lightweight foam concrete capable of absorbing a large amount of decoration pollutants

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0032] Example 1 Preparation of 1# lightweight foam concrete capable of absorbing a large amount of decoration pollutants

[0033] 1. Preparation of non-closed cement foaming agent

[0034] Weigh 15g of sodium α-alkenyl sulfonate, 0.5g of propylene glycol alginate, and 2.5g of modified silicone resin polyether microemulsion FM550 in a beaker, then add 2000mL of water and stir evenly to obtain the required cement foaming agent Emulsion spare.

[0035]2. Preparation of sodium perborate particles with protective film

[0036] Mix 200-mesh sodium perborate and hydroxyethyl starch solution with a degree of substitution of 0.1 at a mass ratio of 1:0.5, then add 1% of alginate by mass, stir quickly and evenly, and dry in vacuum to obtain a protective film sodium perborate particles.

[0037] 3. Compound modified polyol

[0038] Select acornic acid with a molecular weight of 1000Da, 1,3,4,6-tetragalloyl-2-β-D-glucose and diflavanol, and compound the three according to the mass rat...

Embodiment 2

[0042] Example 2 Preparation of 2# lightweight foam concrete capable of absorbing a large amount of decoration pollutants

[0043] 1. Preparation of non-closed cement foaming agent

[0044] Weigh 20g of sodium α-alkenyl sulfonate, 1.0g of propylene glycol alginate, and 4.0g of modified silicone resin polyether microemulsion FM550 into a beaker, then add 2000mL of water and stir evenly to obtain the required cement foaming agent Emulsion spare.

[0045] 2. Preparation of peroxide particles with protective film

[0046] Mix the mixture of 400 mesh sodium percarbonate and sodium perborate (mass ratio 1:3) with the hydroxyethyl cellulose solution with a degree of substitution of 0.1 in a mass ratio of 1:0.4, and then add 1.5% seaweed Glue, stir quickly and then dry in vacuum to obtain peroxide particles with protective film.

[0047] 3. Compound modified polyol

[0048] Select acornic acid with a molecular weight of 1500Da, 1,3,4,6-tetragalloyl-2-β-D-glucose and diflavanol, an...

Embodiment 3

[0052] Example 3 Preparation of 3# lightweight foam concrete capable of a large amount of adsorption of decoration pollutants

[0053] 1. Preparation of non-closed cement foaming agent

[0054] Weigh 18g of sodium α-alkenyl sulfonate, 0.75g of propylene glycol alginate, and 3.0g of modified silicone resin polyether microemulsion FM550 into a beaker, then add 2000mL of water and stir evenly to obtain the required cement foaming agent Emulsion spare.

[0055] 2. Preparation of peroxide particles with protective film

[0056] Mix the mixture of 300 mesh sodium percarbonate and sodium perborate (mass ratio 1:3) with the starch acetate solution with a degree of substitution of 0.1 in a mass ratio of 1:0.6, and then add 2.0% alginate by mass ratio to quickly Stir evenly and then vacuum dry to obtain peroxide particles with a protective film.

[0057] 3. Compound modified polyol

[0058] Select acornic acid with a molecular weight of 3000Da, 1,3,4,6-tetragalloyl-2-β-D-glucose and...

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Abstract

The invention discloses a lightweight foam concrete capable of absorbing a large amount of decoration pollutants, which is made of polyhydroxy compounds, Portland cement, gypsum powder, aramid fiber hollow short fibers, cement foaming agent, and peroxidized concrete with a protective film. It is prepared from product and water: firstly add polyhydroxy compound into water to dissolve, then add Portland cement, gypsum powder, and aramid hollow short fiber into the solution, and keep stirring until a gel is formed; the cement is foamed The agent is prepared into a foam, and the peroxide product with a protective film is added into it and stirred evenly; the foam material is added into the gel, mixed evenly, poured into a mold, molded and maintained for 15-25 days to obtain a lightweight foamed concrete product. The lightweight foamed concrete prepared by the invention greatly improves the ability to absorb and decompose decoration pollutants such as formaldehyde and harmful organic matter, and is more suitable for use as a raw material for geotechnical construction.

Description

technical field [0001] The invention relates to concrete for geotechnical use, in particular to a lightweight foam concrete capable of absorbing a large amount of decoration pollutants (including formaldehyde and other toxic organic substances). Background technique [0002] "National Medium and Long-Term Science and Technology Development Program Outline" (2006-2020) clearly stated that "focus on research and development of green building design technology, building energy-saving technology and equipment, exquisite construction and green building construction technology and equipment, energy-saving building materials and green building materials, building energy-saving technical standards". In recent years, foam concrete, as a green and energy-saving building material, has been widely recognized and applied in the construction field. Materials are playing an increasingly important role in the field of building energy efficiency. However, due to its single function, it nee...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C04B28/14C04B38/10C04B111/40
CPCC04B28/14C04B38/10C04B2111/25C04B2111/40C04B24/10C04B7/02C04B16/0691C04B22/06
Inventor 栗蕾苏小舟李广慧陈劲松胡天彤秦启李福恩杨凤云李小虎郝晓燕李亮
Owner ZHENGZHOU UNIVERSITY OF AERONAUTICS
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