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

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

杨玉平^1,,
张中伟^1, ,,
李玮洁^2, ,,
武豪¹,
董志超³

1.
北京理工大学　先进结构技术研究院，北京 100081
2.
北京交通大学　土木建筑工程学院，北京 100044
3.
山东理工大学　材料科学与工程学院，淄博 255049

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
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- 被引次数: 0
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

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

YANG Yuping^1
,,
ZHANG Zhongwei^{1
, ,},
LI Weijie^{2
, ,},
WU Hao¹,
DONG Zhichao³

1.
Institute of Advanced Structure Technology, Beijing Institute of Technology, Beijing 100081, China
2.
Institute of Engineering Mechanics, Beijing Jiaotong University, Beijing 100044, China
3.
School of Materials Science and Engineering, Shandong University of Technology, Zibo 255049, China

Funds: National Key Research and Development Program of China (2022YFB3706100)

摘要

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。
- 碳/碳蜂窝 /
- 面外压缩 /
- 面内剪切 /
- 破坏模式 /
- 浸渍-碳化工艺
Abstract: To meet the multiple requirements of dimensional stability, light weight, and high load-bearing capacity for the high resolution spacecraft bearing platform, four different sizes of carbon/carbon (C/C) honeycomb were prepared by the combination of hot pressing and resin impregnation-carbonization processes. Carbon fiber prepreg was used as the raw material to form corrugated sheets by hot pressing, and inorganic adhesive was used to bond the corrugated sheets to form the honeycomb. C/C honeycomb was formed by the impregnation-carbonization process. The mechanical behaviors of different sizes of C/C honeycomb under different load modes were investigated. The results show that the C/C honeycombs prepared by the proposed combined process do not experience nodal debonding, and the compressive strength of the 5 mm edge length honeycomb is 8.2 MPa. The main failure mode of C/C honeycomb is double wall debonding delamination under out-of-plane compression, L and W direction shear process loads. The C/C honeycombs show high compressive strength and good designability and may meet the requirements of future lightweight and high strength spacecraft bearing platforms.
- carbon/carbon honeycomb /
- out-of-plane compression /
- in-plane shear /
- failure mode /
- impregnation-carbonization process

HTML全文

图 1 碳/碳蜂窝制备过程

Figure 1. Preparation process of C/C honeycomb core

下载: 全尺寸图片幻灯片

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

下载: 全尺寸图片幻灯片

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

下载: 全尺寸图片幻灯片

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

下载: 全尺寸图片幻灯片

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

下载: 全尺寸图片幻灯片

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

下载: 全尺寸图片幻灯片

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

下载: 全尺寸图片幻灯片

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

下载: 全尺寸图片幻灯片

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

下载: 全尺寸图片幻灯片

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/mm	Test item	Density ρ/(g·cm⁻³)	Relative density ρ*/%
15	Compression	0.13	4.6
10	Compression, shear	0.18	6.9
7.5	Compression	0.26	9.2
5	Compression	0.36	13.8
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/mm	Test item	Specimens type	Modulus/MPa	Strength/MPa	Failure mode
10	Compression	Sandwich panel	159	5.1	Wall delamination
10	Compression	Honeycomb	168	3.0
15	Compression	Honeycomb	161	2.1
7.5	Compression	Honeycomb	243	6.6	Core crushing
5	Compression	Honeycomb	274	8.2	Wall 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/mm	Test item	Modulus /MPa	Strength/MPa	Failure mode
10	L shear	60	1.3	Core debonding
10	W shear	64	0.9	Wall delamination

下载: 导出CSV

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