Sound absorption properties for multi-layer of composite materials using nonwoven fabrics with kapok

Liu, Xueting; Tang, Xiaoning; Deng, Zhongliang

doi:10.1177/1528083720904926

Cited by 14 publications

(9 citation statements)

References 22 publications

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“…also observed that insulation properties of composite materials increased with the increase of no. of layers and thickness [64]. Küçük and Korkmaz explained that thicker materials have comparatively lower air permeability that increases the acoustic properties of the materials [65].…”

Section: Resultsmentioning

confidence: 99%

Microstructure and performance characteristics of acoustic insulation materials from post-consumer recycled denim fabrics

Islam

Messiry

Sikdar

et al. 2020

Journal of Industrial Textiles

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One of the key issues of the 21st century is to reduce the rate of continuously increasing environmental pollution from waste generated by human beings. Use of recycled materials and environmentally friendly approaches to manufacturing can be a good way to deal with these challenges. Similarly, sound pollution has been increasing at an alarming rate due to industrialization and modernization. Use of acoustic insulation materials produced from recycled textile waste can play a vital role in reduction of sound pollution while simultaneously helping reduce municipal solid waste. The goal of this study was to evaluate the recycling of used apparels to produce commercially feasible sustainable products using nonwoven fabrication techniques with a biodegradable thermoplastic binder fiber for possible use as acoustic insulation panels. Recycled denim fibers were used with Sorona® or a PLA binder fiber to successfully produce sound insulation with good performance properties. Maximum transmission loss of about 24 dB and transmission coefficient close to zero at around 1000 Hz were observed. The data indicated that there is a direct correlation between loss of sound transmission with increase in thickness, areal density and decrease in air permeability. When compared with commercially available acoustic insulation material (gypsum board), these products had better insulation properties, indicating that recycled textile products can be used to produce such value-added materials, giving them another useful life before safely disposing in composting environments.

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Section: Resultsmentioning

confidence: 99%

Microstructure and performance characteristics of acoustic insulation materials from post-consumer recycled denim fabrics

Islam

Messiry

Sikdar

et al. 2020

Journal of Industrial Textiles

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“…They concluded that increasing kapok fiber content and thickness will enhance the absorption characteristics. In a further study, Liu et al [11] suggested to use multi-layer of composite materials using non-woven fabrics with kapok. They found that since kapok fiber has a high degree of hollow and small fiber diameter, it is an excellent sound absorption.…”

Section: Introductionmentioning

confidence: 99%

Influence of Surface Discontinuity on Sound Absorption Coefficient of Vehicle Interior Material

Mohamed

Sulaeman

Dianne

et al. 2022

IOP Conf. Ser.: Mater. Sci. Eng.

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There has been considerable effort in the automotive industry to reduce and control the noise in the car cabin. Selecting or designing a better absorber will enhance the comfort of the passengers in the car. There are many techniques to reduce or control the noise in the car cabin. One of the techniques is to place specific material in order to reduce its acoustical noise. This paper presents a study on sound absorption of the felt, polyurethane foam and fabric which are commonly used as car interior material. Furthermore, the influence of surface discontinuity created between two joined material parts is also investigated. The sound absorption coefficient is measured using two-microphone impedance tube. This tube is used to provide noise source frequency ranging from 50 Hz to 10 kHz. Using the dBAlpha software that is connected to the microphone via Symphonie Analyzer, the sound absorption coefficient of the material for every frequency is presented in tabular as well as in graphical form. The test results show that material selection is significantly important for the absorption of noise. Besides, it is found that the surface discontinuity gives different effect depending on the material. For the felt material, the surface discontinuity has insignificant effect. However, the surface discontinuity may give a moderate effect for other materials such as polyurethane foam and fabric.

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“…Azieyanti et al [18] prepared reinforced polypropylene composites using jute and kapok fibres as raw materials and compared jute and kapok fibre-reinforced polypropylene sound insulation effect composites; the results showed that the performance of the composite material, along with the increase in the quality percentage of jute and kapok fibre, increased the filling amount to 30% when the performance of the composite material was best. Liu [19] used polyethene film to fabricate the kapok fibre nonwoven fabric. The research on the sound-absorption coefficient and specific surface impedance of composite materials in the frequency range of 100-2500 Hz was carried out using the impedance tube method.…”

Section: Introductionmentioning

confidence: 99%

Sound-Absorption Performance and Fractal Dimension Feature of Kapok Fibre/Polycaprolactone Composites

et al. 2021

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This article introduces a kind of composite material made of kapok fibre and polycaprolactone by the hot-pressing method. The effects of volume density, mass fraction of kapok fibre, and thickness on the sound-absorption performance of composites were researched using a single-factor experiment. The sound-absorption performance of the composites was investigated by the transfer function method. Under the optimal process parameters, when the density of the composite material was 0.172 g/cm3, the mass fraction of kapok was 40%, and the thickness was 2 cm, the composite material reached the maximum sound-absorption coefficient of 0.830, and when the sound-absorption frequency was 6300 Hz, the average sound-absorption coefficient was 0.520, and the sound-absorption band was wide. This research used the box dimension method to calculate composites’ fractal dimensions by using the Matlab program based on the fractal theory. It analysed the relationships between fractal dimension and volume density, fractal dimension and mass fraction of kapok fibre, and fractal dimension and thickness. The quantitative relations between fractal dimension and maximum sound-absorption coefficient, fractal dimension, and resonant sound-absorption frequency were derived, which provided a theoretical basis for studying sound-absorption performance. The results showed that kapok fibre/polycaprolactone composites had strong fractal characteristics, which had important guiding significance for the sound-absorption performance of kapok fibre composites.

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Sound absorption properties for multi-layer of composite materials using nonwoven fabrics with kapok

Cited by 14 publications

References 22 publications

Microstructure and performance characteristics of acoustic insulation materials from post-consumer recycled denim fabrics

Microstructure and performance characteristics of acoustic insulation materials from post-consumer recycled denim fabrics

Influence of Surface Discontinuity on Sound Absorption Coefficient of Vehicle Interior Material

Sound-Absorption Performance and Fractal Dimension Feature of Kapok Fibre/Polycaprolactone Composites

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