Wet-ground copper slag cement-based electromagnetic shielding composite material and preparation method thereof

A technology of electromagnetic shielding and composite materials, which is applied in the field of building composite materials to achieve the effects of improving mechanical properties, reducing costs, and simplifying the process

Inactive Publication Date: 2020-12-29
HUBEI UNIV OF TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0008] In view of the above problems, a cement-based electromagnetic shielding composite material of wet grinding copper slag and its preparation method are now provided, aiming to prepare a relatively low-cost electromagnetic shielding composite material from industrial by-products such as copper slag, recycled carbon fiber, and waste tire powder. The cement-based electromagnetic shielding composite material with good performance can reduce the pollution caused by the accumulation of the above industrial by-products and improve the comprehensive benefits at the same time

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0031] A cement-based electromagnetic shielding composite material of wet grinding copper slag, the preparation of which comprises the following steps:

[0032] 1), take 90g of copper slag, add water to the copper slag according to the water-to-material ratio of 1:1 for wet grinding, and obtain a wet-ground copper slag slurry (the particle size of the copper slag slurry after wet grinding is measured to be 1.5um), and set aside;

[0033] 2) Immerse and evenly disperse 2g of recycled carbon fibers into 360g of water, then add 0.5g of dispersant, stir evenly, add 0.2g of defoamer, and then ultrasonically treat for 1.5h to obtain a carbon fiber dispersion;

[0034] 3), take 810g of Portland cement, 180g of wet grinding copper slag slurry, 18g of waste tire rubber powder, 9g of water reducer solution with a mass fraction of 10%, and the carbon fiber dispersion prepared in step 2), and stir evenly. A cement-based electromagnetic shielding composite material made of wet grinding cop...

Embodiment 2

[0038] A cement-based electromagnetic shielding composite material of wet grinding copper slag, the preparation of which comprises the following steps:

[0039] 1), take 180g of copper slag, add water to the copper slag according to the water-to-material ratio of 1:1 and wet-grind to obtain a wet-grinded copper slag slurry (the particle size of the copper slag slurry after wet grinding is measured to be 1.35um), and set aside;

[0040] 2) Immerse and evenly disperse 2g of recycled carbon fiber into 270g of water, then add 0.5g of dispersant, stir evenly, add 0.2g of defoamer, and then ultrasonically treat for 1.5h to obtain a carbon fiber dispersion;

[0041]3), take 720g of Portland cement, 360g of wet grinding copper slag slurry, 18g of waste tire rubber powder, 9g of water reducer solution with a mass fraction of 10%, and the carbon fiber dispersion prepared in step 2), and stir evenly. A cement-based electromagnetic shielding composite material made of wet grinding copper ...

Embodiment 3

[0045] A cement-based electromagnetic shielding composite material of wet grinding copper slag, the preparation of which comprises the following steps:

[0046] 1), take 270g of copper slag, add water to the copper slag according to the water-to-material ratio of 1:1 and wet-grind to obtain a wet-grinded copper slag slurry (the particle size of the copper slag slurry after wet grinding is measured to be 1.41um), and set aside;

[0047] 2) Immerse and evenly disperse 2g of recycled carbon fibers into 180g of water, then add 0.5g of dispersant, stir evenly, add 0.2g of defoamer, and then ultrasonically treat for 1.5h to obtain a carbon fiber dispersion;

[0048] 3), take 630g of Portland cement, 540g of wet grinding copper slag slurry, 18g of waste tire rubber powder, 9g of water reducer solution with a mass fraction of 10%, and the carbon fiber dispersion prepared in step 2), stir evenly, A cement-based electromagnetic shielding composite material made of wet grinding copper sl...

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Abstract

The invention relates to a wet-ground copper slag cement-based electromagnetic shielding composite material and a preparation method thereof. The preparation method comprises the following steps: adding water into copper slag for wet grinding, and obtaining wet-ground copper slag slurry for standby application; immersing the recycled carbon fibers into water, uniformly dispersing the recycled carbon fibers into the water, adding a dispersing agent, uniformly stirring, adding a defoaming agent, and carrying out ultrasonic treatment for a period of time to obtain a carbon fiber dispersion liquidfor later use; taking and mixing portland cement, the wet-ground copper slag slurry, waste tire rubber powder, the carbon fiber dispersion liquid and the water reducing agent solution, and evenly mixing to obtain the wet-ground copper slag-based cement-based electromagnetic shielding composite material. According to the invention, industrial wastes such as copper slag, recycled carbon fibers andwaste tires are utilized, so that the mechanical property and electromagnetic shielding property of the cement-based composite material are effectively improved, and the cost is reduced while the green and environment-friendly scientific development concept is realized.

Description

technical field [0001] The invention relates to the technical field of building composite materials, in particular to a cement-based electromagnetic shielding composite material made of wet grinding copper slag and a preparation method thereof. Background technique [0002] With the rapid increase of electronic devices and equipment and the rapid development of wireless communication technology, the phenomenon of electromagnetic radiation is increasing, which also brings a series of social and environmental problems such as electromagnetic interference, electromagnetic information leakage, and electromagnetic environmental pollution. [0003] Electromagnetic interference will cause electronic devices and equipment to malfunction and cause serious adverse consequences. At the same time, all kinds of electromagnetic information carrying important political, military and economic information are easily stolen by other related instruments through the radiation and conduction of e...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C04B28/04C04B18/14C04B20/02C04B14/38C04B18/22H05K9/00
CPCC04B14/386C04B18/144C04B18/22C04B20/026C04B28/04C04B2111/00258H05K9/0081C04B22/002C04B24/383C04B2103/302C04B2103/50Y02W30/91
Inventor 苏英秦义良李心阳贺行洋陈威甄博文郑襄南李维和于肖雷张权钢李颜娟
Owner HUBEI UNIV OF TECH
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