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- In relation to this article, we declare that there is no conflict of interest.
- Publication history
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Received June 19, 2023
Revised July 17, 2023
Accepted July 21, 2022
- Acknowledgements
- This work was supported by the Basic Study and Interdisciplinary R&D Foundation Fund of the University of Seoul (2023).
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Acoustic performance of flexible polyurethane composite foams filled with melamine particles
Department of Chemical Engineering, University of Seoul, 163 Seoulsiripdae-ro, Dongdaemun-gu, Seoul 02504, South Korea
jhkimad@uos.ac.kr
Korean Journal of Chemical Engineering, December 2023, 40(12), 3052-3058(7), 10.1007/s11814-023-1539-3
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Abstract
PU foams are widely used in the automobile industry not only for their lightweight properties, but also as
sound-absorbing and seat cushioning materials. The effects of particles on the sound absorption properties of PU composite foams were investigated. PU foams containing 3 wt% melamine particles showed excellent sound absorption
properties. However, when the particle content exceeded 3 wt%, particle agglomeration occurred, leading to reduced
sound absorption. A dispersant was added during the fabrication process to improve the interfacial compatibility
between the PU matrix and melamine particles, resulting in a well-developed cavity and pore structure. The sound
absorption characteristics of the PU composite foams were significantly improved in the frequency range below
2,000 Hz. Our study highlights the importance of adjusting the concentration of particles and optimizing the cavity and
pore structure of the material for achieving better sound absorption properties in PU composite foams.
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