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碳/碳蜂窝制备工艺及压缩与剪切行为

杨玉平 张中伟 李玮洁 武豪 董志超

杨玉平, 张中伟, 李玮洁, 等. 碳/碳蜂窝制备工艺及压缩与剪切行为[J]. 复合材料学报, 2023, 40(12): 6639-6648. doi: 10.13801/j.cnki.fhclxb.20230509.004
引用本文: 杨玉平, 张中伟, 李玮洁, 等. 碳/碳蜂窝制备工艺及压缩与剪切行为[J]. 复合材料学报, 2023, 40(12): 6639-6648. doi: 10.13801/j.cnki.fhclxb.20230509.004
YANG Yuping, ZHANG Zhongwei, LI Weijie, et al. Preparation process, compression and shear behavior of carbon/carbon honeycomb[J]. Acta Materiae Compositae Sinica, 2023, 40(12): 6639-6648. doi: 10.13801/j.cnki.fhclxb.20230509.004
Citation: YANG Yuping, ZHANG Zhongwei, LI Weijie, et al. Preparation process, compression and shear behavior of carbon/carbon honeycomb[J]. Acta Materiae Compositae Sinica, 2023, 40(12): 6639-6648. doi: 10.13801/j.cnki.fhclxb.20230509.004

碳/碳蜂窝制备工艺及压缩与剪切行为

doi: 10.13801/j.cnki.fhclxb.20230509.004
基金项目: 国家重点研发计划(2022YFB3706100)
详细信息
    通讯作者:

    张中伟,博士,研究员,博士生导师,研究方向为碳/碳、碳/陶、超高温陶瓷等复合材料 E-mail: zhangzhongw@163.com

    李玮洁,博士,教授,博士生导师,研究方向为新型材料和结构的力学行为 E-mail: wj.li@bjtu.edu.cn

  • 中图分类号: TB332

Preparation process, compression and shear behavior of carbon/carbon honeycomb

Funds: National Key Research and Development Program of China (2022YFB3706100)
  • 摘要: 为了满足高分辨率航天器承载平台对尺寸稳定性、轻量化和高承载空间结构的多重需求,采用热压成型和树脂浸渍-碳化组合工艺制备了4种不同规格的碳/碳(C/C)蜂窝。以碳纤维预浸料为原料,通过热压工艺成型波纹片,用无机胶粘剂粘合片材形成蜂窝,经过浸渍-碳化工艺成型C/C蜂窝。对不同规格C/C蜂窝在不同加载方式下的力学行为进行了研究。结果表明,采用所提出组合工艺制备的C/C蜂窝未发生节点脱粘。边长5 mm蜂窝的压缩强度为8.2 MPa。在面外压缩、L向与W向剪切载荷下,C/C蜂窝的主要失效模式是双层壁脱粘分层。C/C蜂窝结构具有较高的抗压强度和良好可设计性,可能满足未来轻质高强航天器承载平台结构要求。

     

  • 图  1  碳/碳蜂窝制备过程

    Figure  1.  Preparation process of C/C honeycomb core

    图  2  碳/碳蜂窝几何参数示意图 (a) 和边长10 mm蜂窝光学照片 (b)

    Figure  2.  Geometric parameters of C/C honeycomb core (a) and photograph of honeycomb with 10 mm side length (b)

    t—Thickness of the honeycomb single wall; 2t—Thickness of the honeycomb double wall; H—Height of the honeycomb core

    图  3  不同轮次树脂浸渍碳化过程后碳/碳蜂窝单层壁 ((a)~(c)) 和双层壁胶粘区域 ((d)~(f)) 的微观形貌SEM图像

    Figure  3.  SEM images of C/C honeycomb single core ((a)-(c)) and adhesive double wall ((d)-(f)) after different cycles resin impregnation-carbonization process

    图  4  10 mm边长碳/碳蜂窝及夹层结构应力-应变曲线 (a) 与破坏过程:(b) 夹层板试样;(c) 蜂窝试样

    Figure  4.  Compression stress-strain curves of C/C honeycomb core and sandwich specimens with l of 10 mm (a) and the failure progress: (b) Sandwich panel specimens; (c) Honeycomb core specimens

    图  5  不同边长碳/碳蜂窝面外压缩应力-应变曲线与破坏过程:((a), (b)) 5 mm;((c), (d)) 7.5 mm;((e), (f)) 10 mm;((g), (h)) 15 mm

    Figure  5.  Out-of-plane compression stress-strain curves and failure progress of C/C honeycomb core specimens with different cell side length: ((a), (b)) 5 mm; ((c), (d)) 7.5 mm; ((e), (f)) 10 mm; ((g), (h)) 15 mm

    图  6  10 mm边长碳/碳蜂窝面内剪切应力-应变曲线 (a) 与破坏过程:(b) L向剪切;(c) W向剪切

    Figure  6.  In-plane shear stress-strain curves of 10 mm side length C/C honeycomb core specimens (a) and the failure progress under different loading directions: (b) L shear; (c) W shear

    图  7  不同边长碳/碳蜂窝压缩应力-应变曲线

    Figure  7.  Compressive stress-strain curves for C/C honeycombs with different edge lengths

    图  8  不同边长碳/碳蜂窝压缩强度

    Figure  8.  Compression strength of C/C honeycombs with different side lengths

    图  9  碳/碳蜂窝芯子压缩强度与蜂格几何尺寸(t/l)的关系

    Figure  9.  C/C honeycomb core compression strength versus lattice geometry (t/l)

    σ—Honeycomb flat compression strength

    表  1  不同几何规格蜂窝芯子规格参数

    Table  1.   Different test specimens of different cell length

    l/mmTest itemDensity
    ρ/(g·cm−3)
    Relative
    density ρ*/%
    15Compression0.13 4.6
    10Compression,
    shear
    0.18 6.9
    7.5Compression0.26 9.2
    5Compression0.3613.8
    Note: l—Cell side length of honeycomb core.
    下载: 导出CSV

    表  2  碳/碳蜂窝结构面外压缩性能和破坏模式

    Table  2.   Failure modes of the different C/C honeycomb structure specimens under various loadings

    l/mmTest itemSpecimens typeModulus/MPaStrength/MPaFailure mode
    10CompressionSandwich panel1595.1Wall delamination
    Honeycomb1683.0
    15CompressionHoneycomb1612.1
    7.5CompressionHoneycomb2436.6Core crushing
    5CompressionHoneycomb2748.2Wall delamination
    下载: 导出CSV

    表  3  边长10 mm碳/碳蜂窝剪切性能和破坏模式

    Table  3.   Failure modes of the different C/C honeycomb structure specimens under various loadings

    l/mmTest itemModulus
    /MPa
    Strength/MPaFailure mode
    10L shear601.3Core debonding
    W shear640.9Wall delamination
    下载: 导出CSV
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出版历程
  • 收稿日期:  2023-02-23
  • 修回日期:  2023-04-19
  • 录用日期:  2023-04-29
  • 网络出版日期:  2023-05-10
  • 刊出日期:  2023-12-01

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