Polyethylene Terephthalate/Carbon Fabric/Polyurethane Foam Sandwich Composites: Flame Retardance and Mechanical Properties

Wu, Liwei; Ban, Jingyan; Jiang, Qian; Li, Ting‐Ting; Shiu, Bing‐Chiuan; Huang, Shih‐Yu; Lou, Ching‐Wen; Lin, Jia‐Horng

doi:10.1007/s12221-019-8590-z

Cited by 4 publications

(1 citation statement)

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“…Fabric is a good option for combination with PU, providing sound absorption and mechanical support due to its inherent fibrous networks [15][16][17][18]. Among various fabric structures, three-dimensional (3D) warp-knitted spacer fabric (WKSF) is characterized by integrated structure, good mechanical properties and designability [19], and is widely used as sound absorption material due to the 3D porous structure.…”

Section: Introductionmentioning

confidence: 99%

Design and optimization of multi-scale porous sandwich composites with excellent sound absorption and cushioning properties

Zhang

Ban

et al. 2021

Jnl of Sandwich Structures & Materials

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Exposure to prolonged or excessive noise has been shown to cause a range of health problems. In this study, flexible sandwich composites (FSCs) with excellent sound absorption and mechanical properties were designed and fabricated by a one-step foaming process. The compound fabric as composite panel and fabric sequence contacted with PU foam has been designed and optimized for excellent cushioning and sound absorption properties. In comparisons of three processing methods for fabricating compound fabrics as reinforced panels of FSCs, punching/hot pressing was found to be the most effective method. Through experiments, the L (low-melting polyethylene terephthalate nonwoven fabric, LPNF) -W (warp-knitted spacer fabric, WKSF) -F (flexible polyurethane foam, FPF) composites had the best performance, reaching the sound absorption coefficient of 0.997 (1000 Hz), 107.77 KPa in compression modulus, 6541 N in maximum impact contact force and 44.68% in impact energy absorption. Morphological study revealed that the transition region formed by FPF and WKSF played a vital role in the L-W-F structure. In that region, small cavities and complex porous paths were observed that effectively improved the sound absorption and cushioning properties by dissipating the stress wave and sound wave level-to-level.

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