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A kind of graphene modified foamed gypsum sound-absorbing material and preparation method thereof

A technology of graphene modification and sound-absorbing materials, which is applied in the field of building materials, can solve the problems of large raw materials, waste, and inability to meet the requirements of low-carbon materials, and achieve the effects of simplifying the production process, realizing recycling, and good environmental protection effects

Active Publication Date: 2020-04-17
CHONGQING UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] In order to solve the above-mentioned problems existing in the prior art, the current sound-absorbing materials not only waste a large amount of raw materials, but also fail to meet the requirements of low-carbon materials. Graphene-modified foamed gypsum sound-absorbing material

Method used

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  • A kind of graphene modified foamed gypsum sound-absorbing material and preparation method thereof

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Experimental program
Comparison scheme
Effect test

Embodiment 1

[0055] A graphene-modified foamed gypsum sound-absorbing material, comprising the following mass percent materials:

[0056] Phosphogypsum: 60.68%,

[0057] Sodium tripolyphosphate: 0.00%,

[0058] Water: 33.91%,

[0059] Hydrogen peroxide: 3.94%,

[0060] Potassium permanganate: 0.01%,

[0061] Calcium stearate: 1.46%,

[0062] Graphene oxide: 0.00%.

[0063] Among them, the bulk density of the sound-absorbing material is 455kg / m 3 .

[0064] A method for preparing the above-mentioned graphene modified foamed gypsum sound-absorbing material, comprising the following steps:

[0065] 1) Pour the weighed phosphogypsum and calcium stearate powder into a blender and stir for 2-3 minutes to obtain a mixed powder;

[0066] 2) Add the weighed graphene oxide powder material into water, stir for 2 to 3 minutes, and then disperse in an ultrasonic disperser for 20 minutes to prepare a graphene oxide dispersion;

[0067]3) Mix the weighed sodium tripolyphosphate, water and potass...

Embodiment 2

[0071] A graphene-modified foamed gypsum sound-absorbing material, comprising the following mass percent materials:

[0072] Desulfurized gypsum: 58%,

[0073] Sodium tripolyphosphate: 0.1%,

[0074] Water: 36%,

[0075] Hydrogen peroxide: 4.5%,

[0076] Potassium permanganate: 0.02%,

[0077] Calcium stearate: 1.36%,

[0078] Graphene oxide: 0.02%.

[0079] Among them, the bulk density of the sound-absorbing material is 350kg / m 3 .

[0080] A method for preparing the above-mentioned graphene modified foamed gypsum sound-absorbing material, comprising the following steps:

[0081] 1) Pour the weighed desulfurized gypsum and calcium stearate powder into a mixer and stir for 2 to 3 minutes to obtain a mixed powder;

[0082] 2) Add the weighed graphene oxide powder material into water, stir for 2 to 3 minutes, and then disperse in an ultrasonic disperser for 20 minutes to prepare a graphene oxide dispersion;

[0083] 3) Mix the weighed sodium tripolyphosphate, water and ...

Embodiment 3

[0087] A graphene-modified foamed gypsum sound-absorbing material, comprising the following mass percent materials:

[0088] Phosphogypsum: 50.65%,

[0089] Desulfurized gypsum: 10%,

[0090] Sodium tripolyphosphate: 0.00%,

[0091] Water: 33.91%,

[0092] Hydrogen peroxide: 3.94%,

[0093] Potassium permanganate: 0.01%,

[0094] Calcium stearate: 1.46%,

[0095] Graphene oxide: 0.03%.

[0096] Among them, the bulk density of the sound-absorbing material is 455kg / m 3 .

[0097] A method for preparing the above-mentioned graphene modified foamed gypsum sound-absorbing material, comprising the following steps:

[0098] 1) Pour the weighed phosphogypsum, desulfurized gypsum, and calcium stearate powder into a mixer and stir for 2 to 3 minutes to obtain a mixed powder;

[0099] 2) Add the weighed graphene oxide powder material into water, stir for 2 to 3 minutes, and then disperse in an ultrasonic disperser for 20 minutes to prepare a graphene oxide dispersion;

[0100] ...

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Abstract

The invention provides a graphene modified foamed plaster sound-absorbing material, which is prepared based on an industrial byproduct plaster and has better strength, toughness and sound-absorbing characteristic and high additional value. Noise pollution becomes a main environment problem complained by urban residents and sound absorption is one of important measures for improving indoor sound quality and controlling noises. An existing traditional sound-absorbing material wastes a lot of raw materials and the requirements on low-carbon materials cannot be met. The graphene modified foamed plaster sound-absorbing material is prepared from the following raw material: the industrial byproduct plaster, a retarder, water, a foaming agent, a catalyst, a foam stabilizer and graphene oxide. Thesound-absorbing material is modified through the graphene so that the additional value of the material is improved; a high-value utilization technology is provided for the material and the graphene modified foamed plaster sound-absorbing material also has the characteristics that wastes are changed into valuable things and greenness and low carbon are realized, so that industrial application in the future is expanded.

Description

technical field [0001] The invention relates to the field of building materials, in particular to a graphene-modified foamed gypsum sound-absorbing material. Background technique [0002] At present, noise pollution has become the main environmental problem complained by urban residents. Sound absorption is one of the important measures to improve indoor sound quality and control noise. According to the difference of sound absorption mechanism, sound-absorbing materials are divided into two categories: porous sound-absorbing materials and resonant sound-absorbing structures (perforated plates). At present, the perforated board sound-absorbing structure is generally made of gypsum board, FC board (fiber cement board), metal board, wood board, polyester fiber board and other materials. These sound-absorbing materials not only waste a lot of raw materials, but also cannot meet the requirements of low-carbon materials. requirements. Therefore, the development of new green low...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C04B38/02C04B28/14
CPCC04B28/142C04B2111/40C04B2111/52C04B2201/20C04B2201/50C04B22/16C04B24/04C04B22/08C04B22/068C04B14/024C04B38/02C04B38/0067
Inventor 谢辉沈俊刘俊超吴会飞
Owner CHONGQING UNIV
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