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Cement-based wave absorbing plate of three-layer structure mixed with EP and NGPs wave absorbing agent and preparation method of wave absorbing plate

A three-layer structure, cement-based technology, applied in the direction of building construction, construction, etc., can solve the problems of low tensile strength, low bending strength, poor electrical conductivity and microwave absorption, etc., and achieve the effect of simple preparation process and convenient molding

Inactive Publication Date: 2019-03-12
YANCHENG INST OF TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, its tensile strength and bending strength are low, and its conductivity and absorbing properties are poor. It is a natural wave-transmitting body for electromagnetic waves. These characteristics restrict its application in the field of conducting and absorbing waves to a certain extent.

Method used

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  • Cement-based wave absorbing plate of three-layer structure mixed with EP and NGPs wave absorbing agent and preparation method of wave absorbing plate
  • Cement-based wave absorbing plate of three-layer structure mixed with EP and NGPs wave absorbing agent and preparation method of wave absorbing plate

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0039] A three-layer structure cement-based wave-absorbing board compounded with EP and NGPs wave-absorbing agents, consisting of an upper layer, a middle layer and a lower layer, the thicknesses of the upper layer, middle layer and lower layer are 8mm, 11mm and 11mm respectively;

[0040] Wherein, the upper plate includes cement, silica fume, expanded perlite and water reducer, and the silica fume, water, expanded perlite and water reducer account for 10%, 42%, 7% and 0.32% of the cement mass respectively;

[0041] The middle plate includes cement, silica fume, water, multilayer graphene nanosheets, nano-nickel particles and water reducer, and the silica fume, water, multilayer graphene nanosheets, nanometer nickel particles and water reducer respectively account for 10%, 33%, 0.025%, 0.7%, 0.33% of

[0042] The lower plate comprises cement, silica fume, water, carbon fiber, carbon black, water reducer and dispersant; said silica fume, water, carbon fiber, carbon black, water...

Embodiment 2

[0050] A three-layer structure cement-based wave-absorbing board compounded with EP and NGPs wave-absorbing agents, consisting of an upper layer, a middle layer and a lower layer, the thicknesses of the upper layer, middle layer and lower layer are 8mm, 11mm and 11mm respectively;

[0051] Wherein, the upper plate includes cement, silica fume, expanded perlite and water reducer, and the silica fume, water, expanded perlite and water reducer account for 10%, 42%, 7% and 0.32% of the cement mass respectively;

[0052] The middle plate includes cement, silica fume, water, multilayer graphene nanosheets, nano-nickel particles and water reducer, and the silica fume, water, multilayer graphene nanosheets, nanometer nickel particles and water reducer respectively account for 10%, 32%, 0.025%, 0.7%, 0.33%;

[0053] The lower plate includes cement, silica fume, water, carbon fiber, carbon black, water reducer and dispersant; the silica fume, water, carbon fiber, carbon black, water red...

Embodiment 3

[0061] A three-layer structure cement-based wave-absorbing board compounded with EP and NGPs wave-absorbing agents, consisting of an upper layer, a middle layer and a lower layer, the thicknesses of the upper layer, middle layer and lower layer are 8mm, 11mm and 11mm respectively;

[0062] Wherein, the upper plate includes cement, silica fume, expanded perlite and water reducer, and the silica fume, water, expanded perlite and water reducer account for 10%, 42%, 7% and 0.32% of the cement mass respectively;

[0063] The middle plate includes cement, silica fume, water, multilayer graphene nanosheets, nano-nickel particles and water reducer, and the silica fume, water, multilayer graphene nanosheets, nanometer nickel particles and water reducer respectively account for 10%, 33%, 0.05%, 0.7%, 0.35% of

[0064] The lower plate includes cement, silica fume, water, carbon fiber, carbon black, water reducer and dispersant; the silica fume, water, carbon fiber, carbon black, water re...

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Abstract

The invention discloses a cement-based wave absorbing plate of a three-layer structure mixed with EP and an NGPs wave absorbing agent and a preparation method of the wave absorbing plate. The wave absorbing plate is composed of an upper layer plate, a middle layer plate and a lower layer plate according to a thickness ratio is 8:11:11. The upper layer plate comprises cement, silica fume, expandedperlite (EP) and a water reducing agent, wherein the silica fume, water, the expanded perlite and the water reducing agent account for 10%, 42%, 7% and 0. 32% of the mass of the cement respectively; the middle layer plate comprises the cement, the silica fume, the water, multi-layer graphene nanoplates (NGPs), nano-nickel particles and the water reducing agent, wherein the silica fume, the water,the multi-layer graphene nanoplates, the nano-nickel particles and the water reducing agent account for 10%, 32-33%, 0.025-0.05%, 0.7% and 0.33-0.35% of the mass of the cement respectively; the lowerlayer plate includes the cement, the silica fume, the water, carbon fibers, carbon black, the water reducing agent and a dispersing agent, wherein the silica fume, the water, the carbon fibers, the carbon black, the water reducing agent and the dispersing agent account for 10%, 74-80%, 0.5-1%, 4%, 0.35-0.36% and 0.35-0.38% of the mass of the cement. The wave absorbing plate is environmentally friendly and free of radioactivity, a preparation process is simple, and forming is convenient.

Description

technical field [0001] The invention belongs to the technical field of building materials and wave-absorbing materials, and in particular relates to a three-layer cement-based wave-absorbing board compounded with EP and NGPs wave-absorbing agents and a preparation method thereof. Background technique [0002] At present, all kinds of electronic and electrical equipment provide high efficiency for social production and bring great convenience to people's daily life, but the electromagnetic radiation generated during their work not only affects their own performance and life, but also has different effects on human health. The degree of damage increases the risk of human body suffering from various diseases, and at the same time, different degrees of information confidentiality and location leakage will occur. Electromagnetic waves have become a new pollution source that is more harmful and difficult to protect after water, atmosphere and noise. In order to reduce the various...

Claims

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Application Information

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IPC IPC(8): E04B1/92C04B28/00
CPCC04B28/00E04B1/92E04B2001/925C04B18/146C04B14/185C04B2103/302C04B14/024C04B14/34C04B14/386C04B14/022C04B2103/408
Inventor 孙亚飞周天舒高培伟刘宏伟李隽陈敏
Owner YANCHENG INST OF TECH
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