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A kind of architectural wave-absorbing coating based on magnesium oxide excited steel slag and its preparation method

A technology of wave absorbing paint and magnesium oxide, which is applied in the field of comprehensive utilization of solid waste resources, can solve the problem that electromagnetic wave absorbing materials are rarely studied, and achieves significant environmental protection significance and engineering application prospects, low production cost, and good wave absorbing effect. Effect

Active Publication Date: 2022-05-13
DALIAN UNIV OF TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

In terms of comprehensive utilization of steel slag resources, cementitious materials are mainly prepared by alkali excitation, and there are very few studies on electromagnetic wave absorbing materials.

Method used

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  • A kind of architectural wave-absorbing coating based on magnesium oxide excited steel slag and its preparation method

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Experimental program
Comparison scheme
Effect test

Embodiment 1

[0037] Steel slag: a by-product of steel production in Anshan Iron and Steel Group, with an average particle size of 10μm-30μm, 200 parts.

[0038] Waste foam particles: expanded polystyrene waste foam particles, average particle size 1mm, average relative density 0.9g / cm 3 , 20 servings.

[0039] Waste rubber powder: crushed and ground waste tires, with an average particle size of 0.2mm, 50 parts.

[0040] Magnesium oxide: produced by Tianjin Kemiou Chemical Reagent Co., Ltd., analytically pure, 20 parts.

[0041] Water reducer: polycarboxylate high-efficiency water reducer, 10 parts.

[0042] Mixing water: Dalian tap water, 90 parts.

[0043] The preparation steps are as follows:

[0044] Using magnesium oxide as the activator, add accurately weighed magnesium oxide to accurately weighed mixing water, and place it in an ultrasonic environment, and ultrasonically and stir for 3 minutes under the condition of 300W ultrasonic power to obtain uniformly dispersed magnesium oxid...

Embodiment 2

[0048] Steel slag: a by-product of steel production in Anshan Iron and Steel Group, with an average particle size of 30μm-50μm, 250 parts.

[0049] Waste foam particles: expanded polystyrene waste foam particles, average particle size 2mm, relative density range 1.0g / cm 3 , 30 servings.

[0050] Waste rubber powder: crushed and ground waste tires, with an average particle size of 0.5 mm, 60 parts.

[0051] Magnesium oxide: produced by Tianjin Kemiou Chemical Reagent Co., Ltd., analytically pure, 25 parts.

[0052] Water reducer: polycarboxylate high-efficiency water reducer, 13 parts.

[0053] Mixing water: Dalian tap water, 120 parts.

[0054] The preparation steps are as follows:

[0055] Using magnesium oxide as the activator, add accurately weighed magnesium oxide to accurately weighed mixing water, and place it in an ultrasonic environment, and ultrasonically and stir for 3 minutes under the condition of 300W ultrasonic power to obtain uniformly dispersed magnesium ox...

Embodiment 3

[0059] Steel slag: a by-product of steel production in Anshan Iron and Steel Group, with an average particle size of 60μm-80μm, 300 parts.

[0060] Waste foam particles: expanded polystyrene waste foam particles, average particle size 3mm, relative density range 1.1g / cm 3 , 40 servings.

[0061] Waste rubber powder: crushed and ground waste tires, with an average particle size of 0.8mm, 70 parts.

[0062] Magnesium oxide: produced by Tianjin Kemiou Chemical Reagent Co., Ltd., analytically pure, 30 parts.

[0063] Water reducer: polycarboxylate high-efficiency water reducer, 15 parts.

[0064] Mixing water: Dalian tap water, 150 parts.

[0065] The preparation steps are as follows:

[0066] Using magnesium oxide as the activator, add accurately weighed magnesium oxide to accurately weighed mixing water, and place it in an ultrasonic environment, and ultrasonically and stir for 3 minutes under the condition of 300W ultrasonic power to obtain uniformly dispersed magnesium oxi...

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Abstract

The invention belongs to the field of comprehensive utilization of solid waste resources, and provides a building wave-absorbing coating based on magnesium oxide stimulating steel slag and a preparation method thereof. The raw materials are: 200-300 parts of steel slag; 20-40 parts of waste foam particles; 50-50 parts of waste rubber powder 70 parts; 20-30 parts of magnesium oxide; 10-15 parts of water reducing agent; 90-150 parts of mixing water. The preparation method is as follows: firstly, magnesium oxide is added into the mixing water as an activator, and a uniformly dispersed magnesium oxide aqueous solution is obtained after ultrasonic stirring treatment; secondly, the mixture of steel slag, waste foam particles and waste rubber particles is added into the magnesium oxide aqueous solution for Stir and pour the stirred magnesia-activated steel slag cementitious material slurry into the mold; finally, remove the mold after curing the sample in the air environment. The architectural wave-absorbing coating for magnesia-activated steel slag prepared by the present invention not only has a lower production cost, but also has good electromagnetic wave absorption performance, which is conducive to promoting the comprehensive utilization of solid waste resources such as steel slag, and has significant environmental protection and economical advantages. and engineering application value.

Description

technical field [0001] The invention belongs to the field of comprehensive utilization of solid waste resources, and relates to a building wave-absorbing coating, in particular to a wave-absorbing coating based on magnesium oxide stimulating steel slag and a preparation method thereof. Background technique [0002] In recent years, with the rapid development of modern wireless communication technologies such as 5G, urban power systems, and industrial systems, electromagnetic waves, as the most commonly used wireless information carriers, exist in residents' daily lives, wireless communications, and electronic equipment, which greatly improves human health. quality of life. At the same time, urban high-voltage power grid systems, electric transportation systems, large-scale industrial equipment and other power facilities will generate a large number of electromagnetic waves through electromagnetic induction, and daily household items such as induction cookers, microwave ovens...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C09D5/32C09D7/61C09D7/65
CPCC09D5/32C09D7/61C09D7/65C09D7/70
Inventor 邓双艾红梅王宝民赵璐
Owner DALIAN UNIV OF TECH
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