In the structural design of sound-absorbing materials, how to combine the merits of porous materials with acoustic functional fillers with special structures to improve the sound-absorbing performance of porous materials at low-medium frequencies is a challenging problem. Herein, a directionally antagonistic acoustic textile is proposed as a sound absorber fabricated via single-sided coating. It is found that the sound absorber presents a double gradient structure by controlling the distribution of filler on the porous material frame. Considering the incident plane of acoustic waves, two different paths are defined, namely A–B and B–A (A, coated side; B, uncoated side), under which the sound absorber shows remarkable anisotropic sound absorption. The peak frequency is from 5559 Hz of bare fabric to 3455 Hz of the A–B NWIII (coated nonwoven when sound waves propagate along A–B) sound absorber, showing a significant tendency to move to the lower frequencies. The peak value of sound absorption coefficient of the A–B NWIII is 0.94, indicating a high sound absorptivity. In addition, by adjusting the acoustic functional filler and weaving structure and thickness of the base fabric, the sound absorber exhibits the expected anisotropic sound absorption. The novel sound absorber can be fit for lightweight sound-absorbing applications because of the characteristics of light, soft, high efficiency and broadband sound absorption.
ThomasMTommasoGWolfgangB, et al.
Cardiovascular effects of environmental noise exposure. Eur. Heart J2014;
35: 829–836.
2.
YuYMayedaERPaulKC, et al.
Traffic-related noise exposure and late-life dementia and cognitive impairment in Mexican-Americans. Epidemiology2020; 31: 771–778.
3.
BasnerMBabischWAvisAD, et al.
Auditory and non-auditory effects of noise on health. Lancet2014;
383: 1325–1332.
4.
AlvesJAPaivaFNSilvaLT, et al.
Low-frequency noise and its main effects on human health – a review of the literature between 2016 and 2019.Appl Sci2020;
10: 5205.
5.
CaoLFuQSiY, et al.
Porous materials for sound absorption. Compos Commun2018;
10: 25–35.
6.
TangXYanX.Acoustic energy absorption properties of fibrous materials: a review. Composites Part A: Appl Sci Manufact2017;
101: 360–380.
7.
ZhangCGongJFanX, et al.
Sound-absorbing and sound insulation soft composite materials of textile for noise reduction.Acta Materiae Composite Sinica2018;
35: 1983–1993 (in Chinese).
8.
TangXYanX.Multi-layer fibrous structures for noise reduction. J Text Inst2017;
108: 1–11.
9.
RabbiABahrambeygiHNasouriK, et al.
Manufacturing of PAN or PU nanofiber layers/PET nonwoven composite as highly effectives absorbers. Adv Polym Tech2014;
33: 21425.
10.
LiuXYanXZhangH.Effects of pore structure on sound absorption of kapok-based fiber nonwoven fabrics at low frequency. Text Res J2015;
86: 739–748.
11.
KimBSParkJ.Double resonant porous structure backed by air cavity for low frequency sound absorption improvement. Compos Struct2017;
183: 545–549.
12.
TangXZhangXZhuangX, et al.
Sound absorption properties of nonwoven fabric based multi-layer composites. Polym Composite2019;
40: 2012–2018.
13.
SunXLiangW.Cellular structure control and sound absorption of polyolefin microlayer sheets. Composites. Part B, Engineering2016;
87: 21–26.
14.
WangTGeHWangF.The sound absorption of sisal fiber and sisal fiber/polyethylene film sheets: Morphology and structure. Polym Composite2018;
39: 2812.
15.
LiuXTangXDengZ.Sound absorption properties for multi-layer of composite materials using nonwoven fabrics with kapok. J Ind Text2020; 2025633404. DOI: 10.1177/1528083720904926
16.
WangJAoQMaJ, et al.
Sound absorption performance of porous metal fiber materials with different structures. Appl Acoust2019;
145: 431–438.
17.
ZhangCGongJLiH, et al.
Fiber-based flexible composite with dual-gradient structure for sound insulation. Composites Part B: Engineering2020;
198: 108166.
18.
LiuLChenYLiuH, et al.
A graphene oxide and functionalized carbon nanotube based semi-open cellular network for sound absorption. Soft Matter2019;
15: 2269–2276.
19.
NineMJAyubMZanderAC, et al.
Graphene oxide-based lamella network for enhanced sound absorption. Adv Funct Mater2017;
27: 1703820.
20.
Mazrouei-SebdaniZBegumHSchoenwaldS, et al.
A review on silica aerogel-based materials for acoustic applications. J Non-Cryst Solids2021;
562: 120770.
21.
TiucAEVerme AnHGaborT, et al.
Improved sound absorption properties of polyurethane foam mixed with textile waste. Energy Procedia2016;
85: 559–565.
22.
ScarpaFBulloughWALumleyP.Trends in acoustic properties of iron particle seeded auxetic polyurethane foam. P I Mech Eng C-J Mec2004;
218: 241–244.
23.
LapcikLVasinaMLapcikovaB, et al.
Investigation of advanced mica powder nanocomposite filler materials: surface energy analysis, powder rheology and sound absorption performance. Composites Part B Engineering2015;
77: 304–310.
24.
ZhangCGongJZhangJ, et al.
Sound absorption of gradient structure fabrics based on functional finishing with metal compounds. Text Res J2019;
89: 3979–3986.
25.
YangTXiongXVenkataramanM, et al.
Investigation on sound absorption properties of aerogel/polymer nonwovens. J Text Inst2019;
110: 196–201.
26.
WuCChenZWangF, et al.
Effect of crossing film among glass fibers on blanket performance. Polym Composite2020;
41: 1521–1530.
27.
OhJKimJLeeH, et al.
Directionally antagonistic graphene oxide-polyurethane hybrid aerogel as a sound absorber. ACS Appl Mater Inter2018;
10: 22650–22660.
28.
ISO 10534-2.1998 (E) Acoustic- determination of sound absorption coefficient and impedance in impedances tubes – Part 2: transfer-function method. International organization for standardization, Switzerland.
29.
KorukH.An assessment of the performance of impedance tube method. Noise Control Eng J2014;
62: 264–274.
30.
SunYHuB.Reflection and absorption of the medium with gradient change of impedance. Appl Mechan Mater2014;
536–537: 887–891.
31.
AoQWangJLiA, et al.
Sound absorption characteristics and structure optimization of gradient fibrous porous materials. Rare Metal Mat Eng2018;
47: 697–700.
32.
XinFMaXLiuX, et al.
A multiscale theoretical approach for the sound absorption of slit-perforated double porosity materials. Compos Struct2019;
223: 110919.
33.
MengHAoQRenS, et al.
Anisotropic acoustical properties of sintered fibrous metals. Compos Sci Technol2015;
107: 10–17.
34.
MuXWuXZhangT, et al.
Thermal transport in graphene oxide – from ballistic extreme to amorphous limit. Sci Rep2014;
4: 3909.
35.
CaoLSiYYinX, et al.
Ultralight and resilient electrospun fiber sponge with a lamellar corrugated microstructure for effective low-frequency sound absorption. ACS Appl Mater Inter2019;
11: 35333–35342.
36.
HongJJiangSYanX,
Sound absorption properties of hollow polyester reinforced rubber-based composite laminated nonwoven. J Text Res2016;
37: 62–67 (in Chinese).
37.
ZhangXWuJMaoQ, et al.
Design of a honeycomb-microperforated panel with an adjustable sound absorption frequency. Appl Acoust2020;
164: 107246.
38.
LiuHZuoB.Sound absorption property of PVA/PEO/GO nanofiber membrane and non-woven composite material. J Ind Text2019; 50: 512–525.
39.
WangYZhuYFuX, et al.
Effect of TW-ZnO/SiO2-compounded shear thickening fluid on the sound insulation property of glass fiber fabric. Text Res J2014;
85: 980–986.
40.
ChenJWangXZhangM, et al.
Preparation and performance of porous silica of sound-absorbing coating. Adv Mater Res2012;
568: 307–310.
41.
CanbolatSKutDDayiogluH.Investigation of pumice stone powder coating of multilayer surfaces in relation to acoustic and thermal insulation. J. Ind Text2015;
44: 639–661.
42.
JuHPMinnKSLeeHR, et al.
Cell openness manipulation of low density polyurethane foam for efficient sound absorption. J Sound Vibr2017;
406: 224–236.
43.
NatsukiTNiQ.Theoretical analysis of sound transmission loss through graphene sheets. Appl Phys Lett2014;
105: 385–581.
44.
WangXYouFZhangF, et al.
Experimental and theoretic studies on sound transmission loss of laminated mica-filled poly (vinyl chloride) composites. J Appl Polym Sci2011;
122: 1427–1433.
45.
TangX.Study on the Sound Absorption Performance and the Sound Absorption Mechanism of Thin Fabrics. Donghua University, Shanghai, China, 2019 (in Chinese).
46.
LiHZhangNFanX, et al.
Investigation of effective factors of woven structure fabrics for acoustic absorption. Appl Acoust2020;
161: 107081.
