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再生聚酯中空纤维基吸声材料的制备与性能

相玉龙 郭静 管福成 李峰 杨强 狄纯秋

相玉龙, 郭静, 管福成, 等. 再生聚酯中空纤维基吸声材料的制备与性能[J]. 复合材料学报, 2022, 40(0): 1-8
引用本文: 相玉龙, 郭静, 管福成, 等. 再生聚酯中空纤维基吸声材料的制备与性能[J]. 复合材料学报, 2022, 40(0): 1-8
Yulong XIANG, Jing GUO, Fucheng GUAN, Feng LI, Qiang YANG, Chunqiu DI. Preparation and properties of regenerated polyester hollow fiber wikis for sound absorption[J]. Acta Materiae Compositae Sinica.
Citation: Yulong XIANG, Jing GUO, Fucheng GUAN, Feng LI, Qiang YANG, Chunqiu DI. Preparation and properties of regenerated polyester hollow fiber wikis for sound absorption[J]. Acta Materiae Compositae Sinica.

再生聚酯中空纤维基吸声材料的制备与性能

基金项目: 国家自然科学基金(51773024; 51373027);辽宁省创新团队基金(LT2017017);辽宁省自然科学基金(20180550429)和大连工业大学(2021-fx010207)
详细信息
    通讯作者:

    郭 静,博士,教授,硕士生/博士生导师,研究方向为高分子材料;纤维复合材料 E-mail: guojing8161@163.com

  • 中图分类号: TQ341.9;TB34

Preparation and properties of regenerated polyester hollow fiber wikis for sound absorption

  • 摘要: 随着环境污染问题的不断加剧,瓶片基再生聚酯纤维的开发和应用有重要意义。本研究以再生聚酯中空纤维和皮芯型热粘合纤维为原料,通过热风固结成型制备具有多尺度微孔的吸声材料,表征了聚酯中空纤维的结构与性能,采用驻波管法研究了中空纤维的线密度与吸声效果的关系,并提出了“多级”吸声理论。研究结果表明,线密度为10 D的中空纤维具有最大的中空度,最好的韧性,最优的吸声效果;吸声系数和降噪系数随厚度的增加线性增加,当厚度为2 cm时,降噪系数NRC将大于0.5 ,有望成为理想的吸声材料。

     

  • 图  1  热风固结吸声材料制备工艺流程图

    Figure  1.  Heat-air solidified sound-absorbing material preparation process flow chart

    图  2  中空聚酯纤维的截面偏光图:(a) 3.3 D;(b) 6.6 D;(c) 10 D;(d) 15 D和皮芯型热粘合纤维 (e)

    Figure  2.  Sectional polarization of hollow polyester fiber: (a) 3.3 D; (b) 6.6 D;(c) 10 D ;(d) 15 D and skin-core heat-bonded fiber (e)

    图  3  不同纤度聚酯中空纤维的断裂强度和断裂伸长率

    Figure  3.  Breaking strength and elongation at break of hollow polyester fibers with different fineness

    图  4  吸声样品原料纤维(a)(b)及材料样品(c)(d)的热分析曲线

    Figure  4.  Thermal analysis curves of raw fiber (a) (b) and material (c) (d) of sound absorption sample

    图  5  热风固结吸声材料的表面(a)(b)和截面(c)(d)的SEM图像

    Figure  5.  SEM images of surface (a) (b) and section (c) (d) of sound absorption sample material under hot air consolidation

    图  6  吸声材料的应力响应示意图(a)和响应曲线(b)

    Figure  6.  Schematic diagram of stress response of sound absorbing materials (a) and response curve (b)

    图  7  不同纤度制备的吸声材料吸声系数图

    Figure  7.  Sound absorption coefficient of sound-absorbing felt prepared with different sizes

    图  8  聚酯中空纤维所制备的吸声材料的吸声机制图(图中(a)是驻波管;(b)是吸声材料;(c)是声波在纤维间孔洞中折损;(d)是声波在纤维中空的折损;(e)是纤维自身的振动)

    Figure  8.  Sound absorption mechanism diagram of sound-absorbing felt made of hollow polyester fiber ((a) is a standing wave tube; (b) is sound absorbing material; (c) is acoustic wave loss in interfiber holes; (d) is the loss of acoustic wave in the hollow of the fiber; (e) is for vibration of the fiber itself.)

    图  9  厚度对3#吸声样品材料吸声效果的影响

    Figure  9.  Thickness of 3# sound-absorbing material on sound absorption effect

    表  1  四种吸声材料的原料规格、厚度和密度

    Table  1.   specification, thickness and density of sound-absorbing felt

    Sample numberDenier of hollow
    polyester fiber/D
    Thickness /cmDensity /(g·cm−3)
    1#3.3 D0.64±0.0020.25±0.020
    2#6.6 D0.64±0.003
    3#10 D0.64±0.001
    4#15 D0.64±0.002
    下载: 导出CSV

    表  2  聚酯中空纤维的中空度

    Table  2.   Hollow degree of hollow polyester fiber

    Fiber
    denier
    Hollow
    degree/%
    Mean diameter of
    hollow part /μm
    3.3 D22.256.62
    6.6 D22.3613.08
    10 D26.5715.54
    15 D23.5116.25
    下载: 导出CSV
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出版历程
  • 收稿日期:  2021-12-09
  • 录用日期:  2022-01-27
  • 修回日期:  2022-01-14
  • 网络出版日期:  2022-03-09

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