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Hybrid fiber cement-based foam composite wave-absorbing material and preparation method thereof

A composite absorbing material and hybrid fiber technology, applied in the field of building materials, can solve the problems of narrow effective bandwidth, single function, high cost, and achieve the effects of low manufacturing cost, high absorbing efficiency and light weight

Active Publication Date: 2021-06-29
SOUTHWEST PETROLEUM UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, existing building absorbing materials have disadvantages such as high density, high cost, narrow effective bandwidth, and single function.

Method used

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  • Hybrid fiber cement-based foam composite wave-absorbing material and preparation method thereof
  • Hybrid fiber cement-based foam composite wave-absorbing material and preparation method thereof
  • Hybrid fiber cement-based foam composite wave-absorbing material and preparation method thereof

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preparation example Construction

[0041] A method for preparing an ordinary Portland cement-based foam wave-absorbing material, comprising the following steps:

[0042] (1) Disperse carbon fibers, polypropylene fibers, hollow glass microspheres, and magnetic iron powder in the cement material, then add a certain amount of foam stabilizer and water reducer, and stir to obtain a mixture.

[0043] (2) Put the mixture prepared in step (1) in the agitator, add a certain amount of deionized water and quick-setting agent, first stir at a low speed until a uniform slurry; weigh a certain amount of hydrogen peroxide, add and mix at a high speed Stir for 10 seconds to obtain a foamed cement-based slurry.

[0044] (3) Import the foamed cement-based slurry prepared in step (2) into the mold, let it stand for foaming for 30 minutes, then harden and remove the formwork after 24 hours of natural curing, and the standard curing is 28 days.

Embodiment 1

[0046] In the present embodiment, the parts by weight of each raw material are as follows: 1000 parts of cement, 550 parts of deionized water, 5 parts of hollow glass microspheres, 3 parts of magnetic iron powder, 80 parts of hydrogen peroxide, and 12 parts of aluminum sulfate liquid quick-setting agent. 1 part, 4 parts of stearic acid foam stabilizer, 1 part of naphthalene-based water reducer, and 1 part of carbon fiber.

[0047] Specific steps are as follows:

[0048] (1) Disperse carbon fiber, hollow glass microspheres, and magnetic iron powder in cement (Portland cement matrix), then add stearic acid foam stabilizer and naphthalene-based water reducer, and stir to obtain a mixture.

[0049] (2) Put the mixture prepared in step (1) in a stirrer, add deionized water and aluminum sulfate liquid quick-setting agent, first stir at low speed for 1min to a uniform slurry; then add hydrogen peroxide, and stir at high speed for 10s , to obtain a foamed cement-based slurry.

[005...

Embodiment 2

[0054] In the present embodiment, the parts by weight of each raw material are as follows: 1000 parts of cement, 550 parts of deionized water, 5 parts of hollow glass microspheres, 3 parts of magnetic iron powder, 80 parts of hydrogen peroxide, and 12 parts of aluminum sulfate liquid quick-setting agent. 1 part, 4 parts of stearic acid foam stabilizer, 1 part of naphthalene-based water reducer, and 1.5 parts of carbon fiber.

[0055]Specific steps are as follows:

[0056] (1) Disperse carbon fiber, hollow glass microspheres, and magnetic iron powder in cement (Portland cement matrix), then add stearic acid foam stabilizer and naphthalene-based water reducer, and stir to obtain a mixture.

[0057] (2) Put the mixture prepared in step (1) in a stirrer, add deionized water and aluminum sulfate liquid quick-setting agent, first stir at low speed for 1min to a uniform slurry; then add hydrogen peroxide, and stir at high speed for 10s , to obtain a foamed cement-based slurry.

[0...

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Abstract

The invention discloses a hybrid fiber cement-based foam composite wave-absorbing material and a preparation method thereof. The hybrid fiber cement-based foam composite wave-absorbing material is mainly prepared from the following components: 900-1100 parts of cement, 500-600 parts of deionized water, 2-10 parts of hollow glass beads, 0-5 parts of magnetic iron powder, 50-100 parts of hydrogen peroxide, 5-20 parts of an accelerator, 0-10 parts of a foam stabilizer, 0-10 parts of a water reducing agent, 0-8 parts of carbon fibers and 0-20 parts of polypropylene fibers. The wave-absorbing material disclosed by the invention has the advantages of low volume weight, adjustable density and aperture, high wave-absorbing efficiency, large effective absorption bandwidth, low manufacturing cost, fire prevention, non-combustibility and the like.

Description

technical field [0001] The present application relates to the field of building materials, in particular to a hybrid fiber cement-based foam composite wave-absorbing material and a preparation method thereof. Background technique [0002] A wave-absorbing material is a functional material that can effectively absorb or attenuate electromagnetic waves, and convert the energy of electromagnetic waves into other forms of energy through some interaction mechanisms inside the material. Commonly used absorbing materials are dielectric loss type, magnetic loss type, and resistive loss type. The existing non-building absorbing materials are usually difficult to meet the requirements of the entire life cycle of the building. They only have good absorbing performance in specific frequency bands and The cost is relatively high, so the development of building absorbing materials has important research and practical significance. Among them, the existing building wave-absorbing material...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C04B28/02C04B38/02C04B111/40
CPCC04B28/02C04B38/02C04B2111/00258C04B2111/40C04B14/22C04B14/34C04B22/068C04B22/148C04B24/085C04B14/386C04B2103/302
Inventor 杨元意岳磊邓淦白草原李波杨婷婷朱一林
Owner SOUTHWEST PETROLEUM UNIV