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展宽布/网胎针刺C/C复合材料制备及力学性能

陶洋 李存静 逄增媛 张典堂

陶洋, 李存静, 逄增媛, 等. 展宽布/网胎针刺C/C复合材料制备及力学性能[J]. 复合材料学报, 2024, 41(4): 1934-1944. doi: 10.13801/j.cnki.fhclxb.20230922.004
引用本文: 陶洋, 李存静, 逄增媛, 等. 展宽布/网胎针刺C/C复合材料制备及力学性能[J]. 复合材料学报, 2024, 41(4): 1934-1944. doi: 10.13801/j.cnki.fhclxb.20230922.004
TAO Yang, LI Cunjing, PANG Zengyuan, et al. Preparation and mechanical properties of spreading cloth/carbon fiber felt needledC/C composites[J]. Acta Materiae Compositae Sinica, 2024, 41(4): 1934-1944. doi: 10.13801/j.cnki.fhclxb.20230922.004
Citation: TAO Yang, LI Cunjing, PANG Zengyuan, et al. Preparation and mechanical properties of spreading cloth/carbon fiber felt needledC/C composites[J]. Acta Materiae Compositae Sinica, 2024, 41(4): 1934-1944. doi: 10.13801/j.cnki.fhclxb.20230922.004

展宽布/网胎针刺C/C复合材料制备及力学性能

doi: 10.13801/j.cnki.fhclxb.20230922.004
基金项目: 173重点项目(2022-JCJQ-ZD-067-11);国家自然科学基金(11702115;12072131);173领域基金(2021-JCJQ-JJ-0211)
详细信息
    通讯作者:

    张典堂,博士,研究员,博士生导师,研究方向为新型编材结构设计及力学性能评价 E-mail: zhangdiantang@jiangnan.edu.cn

  • 中图分类号: TB332

Preparation and mechanical properties of spreading cloth/carbon fiber felt needledC/C composites

Funds: National Defense Basic Scientific Research Program of China (2022-JCJQ-ZD-067-11); National Natural Science Foundation of China (11702115; 12072131); National Defense Domain Foundation of China (2021-JCJQ-JJ-0211)
  • 摘要: 为提高针刺碳/碳(C/C)复合材料致密化效率和承载性能,分别设计了16 mm展宽布与网胎交替叠层的针刺预制体(B-NPs)、8 mm展宽布与网胎交替叠层的针刺预制体(H-NPs)及外层采用B-NPs结构、内层采用H-NPs结构的针刺预制体(T-NPs),联合化学气相渗透和浸渍-碳化工艺制备了3种针刺C/C复合材料。采用阿基米德排水法和X射线计算机断层扫描(Micro-CT)技术对3种针刺C/C复合材料的致密化效率、孔隙率和孔隙分布进行了统计,并开展了常温下三点弯曲力学性能测试。结果表明:随着展宽纱线宽度的增加,针刺C/C复合材料致密化效率得到提高,内部孔隙率有所下降。在相同的致密化时间内,B-NPs增密效果最佳,密度达到1.42 g/cm3,孔隙率仅为10.67%。三点弯曲载荷下,3种材料均表现出脆性破坏,其中T-NPs的弯曲强度和弯曲模量分别为173.04 MPa和20.66 GPa,具有优异的抗弯性能。3种材料的初始破坏位置均发生在针刺纤维束附近,其中低孔隙率的B-NPs针刺纤维束和碳布层破坏以纤维断裂为主;高孔隙率的H-NPs纤维/基体界面结合能力差,碳布层的破坏以纤维/基体界面脱粘和纤维拔出为主导。

     

  • 图  1  针刺预制体铺层结构设计

    Figure  1.  Design of needle punched prefabricated layer structure

    B-NPs—16 mm spreading coth and felt lamination layers; H-NPs—8 mm spreading coth and felt lamination layers; T-NPs—Outer layer is made of 16 mm spreading cloth with mesh tire lamination, while the inner layer is made of 8 mm spreading cloth with felt lamination

    图  2  三点弯曲实验装置及加载方式

    Figure  2.  Three point bending experimental device and loading method

    图  3  化学气相渗透(CVI)工艺致密化密度变化

    Figure  3.  Density variation during chemical vapor infiltration (CVI) densification process

    图  4  T700-12K碳纤维纱线展宽微观结构

    Figure  4.  Microstructure of T700-12K carbon fiber yarn stretching

    图  5  3种预制体热解碳沉积简化模型

    Figure  5.  Simplified models for pyrolysis carbon deposition of three types of preforms

    图  6  LPI工艺致密化密度变化

    Figure  6.  Density change during LPI process densification

    图  7  3种预制体液相浸渍-碳化简化模型

    Figure  7.  Simplified models for impregnation-carbonization of three types of prefabricated bodies

    图  8  展宽布/网胎针刺C/C复合材料内部孔隙统计

    Figure  8.  Internal pore statistics of spreading cloth/felt needled C/C composites

    图  9  展宽布/网胎针刺C/C复合材料孔隙分布特征:(a) B-NPs;(b) H-NPs;(c) T-NPs

    Figure  9.  Pore distribution characteristics of spreading cloth/felt needle punched C/C composites: (a) B-NPs; (b) H-NPs; (c) T-NPs

    图  10  展宽布/网胎针刺C/C复合材料三点弯曲载荷-位移曲线

    Figure  10.  Three point bending load-displacement curves of spreading cloth/felt needle punched C/C composites

    图  11  展宽布/网胎针刺C/C复合材料弯曲强度和模量

    Figure  11.  Bending strength and modulus of spreading cloth/felt needle punched C/C composites

    图  12  弯曲载荷下针刺C/C复合材料宏观损伤形貌

    Figure  12.  Macroscopic damage morphologies of needle punched C/C composites under bending load

    图  13  针刺C/C复合材料损伤机制示意图:(a) B-NPs;(b) H-NPs;(c) T-NPs

    Figure  13.  Schematic diagram of damage mechanism of needle punched C/C composite material: (a) B-NPs; (b) H-NPs; (c) T-NPs

    图  14  X射线计算机断层扫描(Micro-CT)针刺预制体内部形貌:(a) B-NPs;(b) H-NPs;(c) T-NPs

    Figure  14.  Morphology of X-ray computed tomography (Micro-CT) needle preformed body: (a) B-NPs; (b) H-NPs; (c) T-NPs

    图  15  展宽布/网胎针刺C/C复合材料三点弯曲损伤SEM图像

    Figure  15.  SEM images of three-point bending damage of spreading cloth/felt needle punched C/C composite material

    表  1  针刺基布与网胎性能参数

    Table  1.   Performance parameters of needle punched substrate and carbon fiber felt

    Material Thickness/mm Surface density/(g·m−2) Yarn density/(yarn·10 cm−1) Size/mm2
    16 mm spreading carbon cloth 0.08 100 6.25 350×220
    8 mm spreading carbon cloth 0.16 200 12.50 350×220
    Short cut fiber felt 0.40 50 350×220
    下载: 导出CSV

    表  2  针刺预制体参数

    Table  2.   Parameters of needle punched preforms

    Preform Density/(g·cm−3) Number of layers Thickness/mm Volume fraction/vol%
    16 mm 8 mm Carbon fiber felt
    H-NPs 0.35 10 9 6.04 22.41
    B-NPs 0.29 10 9 5.79 18.73
    T-NPs 0.33 6 4 9 6.13 20.78
    下载: 导出CSV

    表  3  针刺C/C复合材料密度基孔隙率

    Table  3.   Density based porosity of needle punched C/C composite materials

    Composite CVI/(g·cm−3) LPI/(g·cm−3) Porosity/%
    B-NPs 0.78 1.42 10.67
    H-NPs 0.74 1.31 13.32
    T-NPs 0.76 1.37 11.80
    Note: LPI—Liquid-phase impregnation/carbonization.
    下载: 导出CSV
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出版历程
  • 收稿日期:  2023-06-30
  • 修回日期:  2023-09-03
  • 录用日期:  2023-09-17
  • 网络出版日期:  2023-09-26
  • 刊出日期:  2024-04-15

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