Effect of Silica Nanoparticles and Nano-dye on Acoustic Absorption Rate of Nano-Composite Based on Hydrolysed Cotton and Gypsum

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NAJIMI M.R.; BARKHORDARI A.; HEKMATIMOGHADDAM S.; KOUHNAVARD B.; JEBALI A.

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Journal: Tibbi- i- kar Year:2018 | Volume:10 | Issue:1 Page(s): 1-6

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Title

Effect of Silica Nanoparticles and Nano-dye on Acoustic Absorption Rate of Nano-Composite Based on Hydrolysed Cotton and Gypsum

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Keywords

Sound Absorption CoefficientQ1

NanosilicaQ1

Nano-dyeQ1

PlasterQ3

Hydrolysed CottonQ1

Abstract

Introduction: Exposure to impermissible noise in the workplace is one of the most common occupational hazards and may cause hearing loss. One way to control industrial noise is by acoustic absorbers. Nanoparticles can be used to composite materials. We aimed to design acoustic panels based on gypsum, silicon oxide nanoparticles, Hydrolysed Cotton and Nano-dye, as well as to compare their sound absorbance at various frequencies. Materials and Methods: The nanocomposite consisting of gypsum, hydrolyzed cotton, silica nanoparticles and Nano-dye was prepared by simple mixing and heat treatment, and then its sound absorption coefficient was investigated. The absorption coefficient was evaluated at frequencies of 250 to 5000 Hz using static waves and in accordance with ISO 9803-1. Results: Maximum difference of the absorption coefficient was 10% at 2500 Hz, and it was related to a sample consisting of gypsum, Nanosilica, Hydrolysed Cotton, and Nano-dye, compared to a pure Plaster sample. The highest absorption coefficient (0.46) of the sample was from gypsum, Nanosilica and Hydrolysed Cotton at the frequency of 5000 Hz. Conclusion: The results of this study showed that the absorption coefficient was increased with increasing frequency, but decreased by adding nanoparticles and Nano-dye.

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APA: Copy

NAJIMI, M.R., BARKHORDARI, A., HEKMATIMOGHADDAM, S., KOUHNAVARD, B., & JEBALI, A.. (2018). Effect of Silica Nanoparticles and Nano-dye on Acoustic Absorption Rate of Nano-Composite Based on Hydrolysed Cotton and Gypsum. OCCUPATIONAL MEDICINE, 10(1 ), 1-6. SID. https://sid.ir/paper/206969/en

Vancouver: Copy

NAJIMI M.R., BARKHORDARI A., HEKMATIMOGHADDAM S., KOUHNAVARD B., JEBALI A.. Effect of Silica Nanoparticles and Nano-dye on Acoustic Absorption Rate of Nano-Composite Based on Hydrolysed Cotton and Gypsum. OCCUPATIONAL MEDICINE[Internet]. 2018;10(1 ):1-6. Available from: https://sid.ir/paper/206969/en

IEEE: Copy

M.R. NAJIMI, A. BARKHORDARI, S. HEKMATIMOGHADDAM, B. KOUHNAVARD, and A. JEBALI, “Effect of Silica Nanoparticles and Nano-dye on Acoustic Absorption Rate of Nano-Composite Based on Hydrolysed Cotton and Gypsum,” OCCUPATIONAL MEDICINE, vol. 10, no. 1 , pp. 1–6, 2018, [Online]. Available: https://sid.ir/paper/206969/en

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