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Theoretical and Experimental Studies on Thermal Properties of Polyester Nonwoven Fibrous Material

1
Institute for Nanomaterials, Advanced Technologies and Innovation, Technical University of Liberec, 461 17 Liberec, Czech Republic
2
Department of Material Engineering, Faculty of Textile Engineering, Technical University of Liberec, 46117 Liberec, Czech Republic
3
Department of Advanced Fibro-Science, Kyoto Institute of Technology, Matsugasaki, Sakyo-ku, Kyoto 606-8585, Japan
*
Author to whom correspondence should be addressed.
Materials 2020, 13(12), 2882; https://doi.org/10.3390/ma13122882
Received: 28 May 2020 / Revised: 15 June 2020 / Accepted: 22 June 2020 / Published: 26 June 2020
Polyester nonwoven fibrous material is widely used in construction and automobile industries for thermal insulation purposes. It is worthy and meaningful to understand the effect of structural parameters on the thermal property. Fiber orientation, as one of the most vital parameters, has a significant effect on thermal property. However, there has been little quantitative analysis focusing on this aspect. This paper theoretically and experimentally analyzes the thermal conductivity of samples with varying fiber orientation. Existing models were selected to predict the thermal conductivity of polyester nonwoven samples. Two different apparatus were applied to carry out the experimental measurements. The relative differences between the predicted and measured results were compared. One commonly used model was modified for accurate prediction. It was shown that some existing models under- or overestimate the thermal conductivity compared to the measured values. The results indicate that the modified model can accurately predict the thermal conductivity of polyester nonwoven materials within a 0.2% relative difference. View Full-Text
Keywords: polyester; fiber orientation; thermal conductivity; models; modification polyester; fiber orientation; thermal conductivity; models; modification
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MDPI and ACS Style

Yang, T.; Xiong, X.; Petrů, M.; Tan, X.; Kaneko, H.; Militký, J.; Sakuma, A. Theoretical and Experimental Studies on Thermal Properties of Polyester Nonwoven Fibrous Material. Materials 2020, 13, 2882.

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