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聚酰亚胺纤维纬编织物增强橡胶基复合材料冲击性能

郭梦惟 孙颖 王昆 冯亚 刘梁森 陈利

郭梦惟, 孙颖, 王昆, 等. 聚酰亚胺纤维纬编织物增强橡胶基复合材料冲击性能[J]. 复合材料学报, 2022, 39(10): 4572-4579. doi: 10.13801/j.cnki.fhclxb.20211027.002
引用本文: 郭梦惟, 孙颖, 王昆, 等. 聚酰亚胺纤维纬编织物增强橡胶基复合材料冲击性能[J]. 复合材料学报, 2022, 39(10): 4572-4579. doi: 10.13801/j.cnki.fhclxb.20211027.002
GUO Mengwei, SUN Ying, WANG Kun, et al. Impact properties of polyimide fiber weft knitted fabric reinforced rubber composites[J]. Acta Materiae Compositae Sinica, 2022, 39(10): 4572-4579. doi: 10.13801/j.cnki.fhclxb.20211027.002
Citation: GUO Mengwei, SUN Ying, WANG Kun, et al. Impact properties of polyimide fiber weft knitted fabric reinforced rubber composites[J]. Acta Materiae Compositae Sinica, 2022, 39(10): 4572-4579. doi: 10.13801/j.cnki.fhclxb.20211027.002

聚酰亚胺纤维纬编织物增强橡胶基复合材料冲击性能

doi: 10.13801/j.cnki.fhclxb.20211027.002
基金项目: 天津市自然科学基金(19JCYBJC18300);天津市高等学校创新团队项目(TD13-5043)
详细信息
    通讯作者:

    孙颖,博士,教授,博士生导师,研究方向为高性能编织材料和树脂基纺织复合材料 E-mail:sunying@tiangong.edu.cn

  • 中图分类号: TB332

Impact properties of polyimide fiber weft knitted fabric reinforced rubber composites

  • 摘要: 针对固体火箭发动机绝热层复合材料在冲击作用下因增强织物和橡胶基体变形不协调导致的破坏问题,基于罗纹纬编结构,设计制备了两种纤维细度、三种线圈长度和两种铺层结构的聚酰亚胺纤维纬编织物增强丁腈橡胶(NBR)复合材料,测试并分析了增强结构对复合材料低速冲击性能的影响。结果表明:选用大丝束纤维、长线圈及正交铺层的复合材料具有更高的冲击峰值载荷和吸能。采用轮廓仪和显微镜观测冲击损伤形貌,在20.1 J冲击能量下试样均未被穿透,基体沿纤维方向产生裂纹并沿厚度方向产生塑性变形是复合材料主要的损伤模式。

     

  • 图  1  PI纤维罗纹结构示意图

    Figure  1.  Structure diagram of PI fiber rib structure

    RVE—Representative volume element; W—Wale width; C—Course height; L—Loop length

    图  2  PI纤维纬编织物实物图

    Figure  2.  Photos of PI fiber weft knitted fabric

    图  3  PI纤维纬编织物增强丁腈橡胶(NBR)复合材料制备流程

    Figure  3.  Schematic diagram of prepare process of PI fiber weft knitted fabric reinforced nitrile rubber (NBR) composites

    图  4  冲击试验机 (a) 和轮廓仪 (b)

    Figure  4.  Impact testing machine (a) and profilometer (b)

    图  5  PI纤维纬编织物增强NBR复合材料载荷-时间曲线

    Figure  5.  Load-time curves for PI fiber weft knitted fabric reinforced NBR composites

    4,1,1,1,3—Sample number

    图  6  PI纤维纬编织物增强NBR复合材料能量-时间曲线

    Figure  6.  Energy-time curves for PI fiber weft knitted fabric reinforced NBR composites

    图  7  PI纤维纬编织物增强NBR复合材料峰值载荷 (a)、达到峰值载荷的时间 (b) 和吸收能量 (c)

    Figure  7.  Peak load (a), time to peak load (b) and absorbed energy (c) for PI fiber weft knitted fabric reinforced NBR composites

    图  8  PI纤维纬编织物增强NBR复合材料损伤形貌

    Figure  8.  Damage morphologies of PI fiber weft knitted fabric reinforced NBR composites

    表  1  聚酰亚胺(PI)纤维主要性能参数

    Table  1.   Properties of polyimide (PI) fiber

    MaterialDensity/
    (g·cm−3)
    Linear density/
    D
    Tensile strength/
    GPa
    Tensile modulus/
    GPa
    Elongation/
    %
    Tg/
    SHINO S351.4415003.62112.03.37320
    Measured1.4715353.47111.93.10
    Note: Tg—Glass transition temperature.
    下载: 导出CSV

    表  2  丁腈橡胶(NBR)基本性能参数

    Table  2.   Properties of nitrile rubber (NBR)

    Material300%
    modulus/
    MPa
    Tensile
    strength/
    MPa
    Elongation/
    %
    N41 nitrile rubber14.326.4480
    下载: 导出CSV

    表  3  PI纤维纬编织物结构参数

    Table  3.   Structure parameters of PI fiber weft knitted fabric

    SampleLoop length/
    mm
    Yarn fineness/
    D
    Wale density/
    (wale·(5 cm)−1)
    Course density/
    (course·(5 cm)−1)
    Area density/
    (g·m−2)
    Thickness/
    mm
    PITS15.345007.515.0987.03.2
    PITM16.645007.815.01070.93.6
    PITL18.445007.815.01187.04.5
    PIFL18.415009.124.3594.42.2
    Notes: T—Thickness; F—Fineness; S—Short; M—Middle; L—Long.
    下载: 导出CSV

    表  4  PI纤维纬编织物增强丁腈橡胶(NBR)复合材料结构参数

    Table  4.   Structure parameters of PI fiber weft knitted fabric reinforced nitrile rubber (NBR) composites

    SampleLay-upMeasuring thickness/mmArea density/(g·m−2)Fiber volume fraction/vol%
    PITS/NBR[0]23.01851.045.7
    PITM/NBR[0]23.11816.749.6
    PITL/NBR[0]23.13563.354.9
    PITLO/NBR[0/90]3.14230.054.9
    PIFL/NBR[0]43.24597.851.6
    Note: O—Orthogonal.
    下载: 导出CSV
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出版历程
  • 收稿日期:  2021-08-27
  • 修回日期:  2021-10-15
  • 录用日期:  2021-10-19
  • 网络出版日期:  2021-10-28
  • 刊出日期:  2022-08-22

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