Synthesis of macroporous ceramic with enhanced sound absorption capability in low and medium frequency

He, Chao; Du, Bin; Qian, Junjie; Wang, Xuan; Luo, Biyun; Shui, Anze

doi:10.1016/j.ceramint.2020.04.100

Cited by 11 publications

(12 citation statements)

References 12 publications

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“…The raw porous ceramics with pore sizes from tens of nanometers to a few millimeters and apparent porosity in the range of 85–90% show an interconnected skeleton structure. 19 High porosity and connectivity are conducive to the incidence of sound waves, facilitating the transmission of sound waves. By vacuum impregnation and vulcanization, the GO/SBR composite and the raw porous ceramic were combined efficiently.…”

Section: Resultsmentioning

confidence: 99%

“…Porous ceramics were used as matrices, and the detailed fabrication process was reported in our previous work. 19 The fabrication process of the porous composite materials is illustrated in Figure 1 . First, different contents of GO were dispersed in deionized water with ultrasonication for 12 h. Afterward, styrene-butadiene rubber latex (SBRL) and vulcanized aqueous suspension (sublimed sulfur, DM, stearic acid, and ZnO) were dispersed in deionized water successively under intense stirring for 4 h. Then, SRRL and vulcanized aqueous suspension were mixed sequentially with the GO suspension under mechanical stirring at 650 rpm for 48 h, intermittently accompanied by water bath sonication.…”

Section: Methodsmentioning

confidence: 99%

“…The as-prepared material possessed improved sound absorption performance in a broad absorption band between 200 and 2000 Hz. 19 However, there is still room for improvement at low frequencies. Considering the excellent sound absorption performance of the composite material and the superior dispersion and high specific surface area of GO, we tried to extend the sound absorption performance by coating a GO/styrene-butadiene rubber (SBR) film onto porous ceramics.…”

Section: Introductionmentioning

confidence: 99%

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Enhanced Sound Absorption Properties of Ceramics with Graphene Oxide Composites

et al. 2021

ACS Omega

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Noise pollution is acknowledged as the main environmental problem and is as harmful to human physical and mental health as water and air pollution. However, the acoustic properties of traditional sound absorption materials in low frequency ranges still need to be improved. Herein, the low-frequency sound absorption coefficient of porous ceramics was further improved by coating a graphene oxide (GO) and styrene-butadiene rubber (SBR) composite film inside the porous ceramics. The improved sound absorption coefficient of the porous composite reached 30.4% in the range of 200–800 Hz, which is attributed to the enhancement of the thermal viscous effect and the extension of the dissipation mechanism. Predictably, designing the morphology of three-dimensional interconnected porous structures on the microscale is comparatively useful for developing a porous sound absorbing material effective in middle- and low-frequency noise.

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Section: Resultsmentioning

confidence: 99%

Section: Methodsmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

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Enhanced Sound Absorption Properties of Ceramics with Graphene Oxide Composites

et al. 2021

ACS Omega

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“…The porous ceramics have an apparent porosity of 85%-90% and are mainly composed of silica and albitite, which was reported in a previous study. 40 GO was purchased from Ashine Advanced Carbon Material (Changzhou) Co., Ltd., and PVA (alcoholysis degree: 98.0-99.0 mol%; viscosity: 54.0-66.0 mPa s) was purchased from Aladdin. Hydrazine hydrate was purchased from Guangzhou Chemical Reagent Factory.…”

Section: Methodsmentioning

confidence: 99%

Enhanced sound absorption properties of porous ceramics modified by graphene oxide films

et al. 2022

J Am Ceram Soc

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Under the condition of constant thickness, improving the low-frequency sound absorption performance of conventional sound-absorbing materials is a challenging research topic. To address this issue, a new reduced graphene oxide/polyvinyl alcohol (RGO/PVA) porous composite ceramic was fabricated using freeze-drying and optimized by redesigning the internal connecting pores of porous ceramic matrixes with a reticular microstructure using RGO and PVA.The as-prepared porous structure showed significant enhancement in the lowfrequency sound absorption band compared with pristine porous ceramics. In addition, the hybrid porous ceramics exhibited low thermal conductivity. These favorable properties indicate that the hybrid sound-absorbing ceramics have potential application prospects for noise reduction in the fields of construction and electrical and mechanical devices.

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“…At present, using sound absorption materials in people's living space is of the main method to deal with noise pollution. Usually, porous material is the most commonly used to absorb noise (Duan et al, 2012;Cai et al, 2019;Otaru, 2020;Liu et al, 2015b;Yuan et al, 2010;Sun et al, 2016;Wu et al, 2014;He et al, 2020). The sound absorption properties of ceramic MMMS 17,6 1108 This work was supported in part by the Testing Foundation of BNU (grant no.…”

Section: Introductionmentioning

confidence: 99%

Optimization of structural parameters for the sound absorption performance of a cellular ceramic foam

Sun

Liu

2021

MMMS

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PurposeThe purpose of this paper is to provide an optimization schedule of structural parameters for the sound absorption performance of a cellular ceramic foam in the sound frequency range of 200–4,000 Hz.Design/methodology/approachThe cellular ceramic foam with porosity of about 60–75% and the pore size of about 1–7 mm was successfully prepared by using natural zeolite powder as the main raw material. For this ceramic foam, the sound absorption performance was measured, and the absorption structure was optimized by some important structural parameters. With orthogonal experiment, optimization of structural parameters was found for absorption performance. By means of the range analysis method, the main factor is known to influence the performance of ceramic foam.FindingsThe present ceramic foam may have good absorption performance although at relatively low frequencies of 400–4,000 Hz while structural parameters of sample are appropriately combined. With orthogonal experiment, optimization of structural parameters for the absorption performance was found to be as follows: sample thickness, 25 mm; porosity, 73.5%; pore size, 4–5 mm and air gap depth, 20 mm. To influence the performance, sample thickness is the main factor, air gap depth is the second and both of pore size and porosity would have a relatively slight effect.Originality/valueThis paper presents a method to optimize the structural parameters of a cellular ceramic foam for sound absorption performance by means of orthogonal experiment.

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Synthesis of macroporous ceramic with enhanced sound absorption capability in low and medium frequency

Cited by 11 publications

References 12 publications

Enhanced Sound Absorption Properties of Ceramics with Graphene Oxide Composites

Enhanced Sound Absorption Properties of Ceramics with Graphene Oxide Composites

Enhanced sound absorption properties of porous ceramics modified by graphene oxide films

Optimization of structural parameters for the sound absorption performance of a cellular ceramic foam

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