碳纤维增强聚芳醚酮复合材料冲击损伤修复及性能

顾洋洋; 刘刚; 高洞庭; 张代军; 王成博; 姚佳楠; 杨曙光

doi:10.13801/j.cnki.fhclxb.20231010.001

碳纤维增强聚芳醚酮复合材料冲击损伤修复及性能

doi: 10.13801/j.cnki.fhclxb.20231010.001

顾洋洋¹,
刘刚¹,
高洞庭¹,
张代军^{2, 3},
王成博^{2, 3},
姚佳楠^1, ,,
杨曙光¹

1.
东华大学　材料科学与工程学院，纤维材料改性国家重点实验室，上海 201620
2.
中国航发北京航空材料研究院，北京 100095
3.
先进复合材料国防科技重点实验室，北京 100095

基金项目: 工信部民机专项(MJZ1-11N22)

详细信息

通讯作者:
姚佳楠，博士，讲师，硕士生导师，研究方向为高性能热塑性复合材料　E-mail: yjn@dhu.edu.cn

中图分类号: TB332
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出版历程
- 收稿日期: 2023-07-25
- 修回日期: 2023-09-18
- 录用日期: 2023-09-27
- 网络出版日期: 2023-10-12
- 刊出日期: 2024-05-01

Impact damage repair and performance of carbon fiber reinforced poly aryl ether ketone composites

1.
State Key Laboratory for Modification of Chemical Fibers and Polymer Materials, College of Materials Science and Engineering, Donghua University, Shanghai 201620, China
2.
AECC Beijing Institute of Aeronautical Materials, Beijing 100095, China
3.
National Key Laboratory of Advanced Composites, Beijing 100095, China

Funds: Civil Aircraft Special Item of Ministry of Industry (MJZ1-11N22)

摘要

摘要: 针对国产T300级碳纤维增强高性能聚芳醚酮树脂预浸料(SCF35/PAEK-L)制备的热塑性复合材料，采用热压工艺修复不同冲击能量作用下产生的冲击损伤，以压缩强度评价复合材料冲击损伤修复的效果，并利用Micro-CT研究复合材料修复前、后的微观形貌。结果显示：复合材料的冲击损伤修复效果受到热压修复工艺的影响，随着修复温度的提高复合材料的压缩强度呈现先增加后降低的趋势，较低的修复温度及较高的修复压力与较高的修复温度及较低的修复压力能够得到相近的压缩强度；同时，复合材料的修复效果与冲击损伤程度具有相关性，随着冲击损伤程度的提高，复合材料修复后的压缩强度逐渐降低，标准能量冲击的复合材料修复后，其修复后压缩强度恢复到无损伤状态压缩强度的~70%，为~417 MPa，复合材料出现穿透损伤后，其修复后压缩强度恢复到56%，为~334 MPa。
- 聚芳醚酮 /
- 热塑性复合材料 /
- 低速冲击 /
- 热压修复 /
- 压缩性能
Abstract: For the thermoplastic composites prepared by domestic T300 grade carbon fiber reinforced high performance poly aryl ether ketone resin prepreg (SCF35/PAEK-L), the impact damages generated by different impact energies were repaired by hot pressing process. The compressive strength was used to evaluate the repair effect of composite impact damage, and Micro-CT was utilized to study the microscopic morphology of composites before and after repair. The results show that the impact damage repair effect of the composite is affected by the hot pressing repair process, and the compression strength of the composite shows a trend of increasing and then decreasing as the repair temperature increases. The lower repair temperature and higher repair pressure are able to obtain similar compression strength with higher repair temperature and lower repair pressure. The repair effect of the composite material is influenced by the degree of impact damage, and the compressive strength of the composite material after repair gradually decreases as the degree of impact damage increases. The repaired compressive strength of the composites with standard energy impact recoveres to ~70% of the compression strength in the undamaged state, which is ~417 MPa, and when the composite material has penetration damage, its compressive strength after repair recovers to 56%, which is ~334 MPa.
- poly aryl ether ketone /
- thermoplastic composites /
- low velocity impact /
- hot pressing repair /
- compression properties

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图 1 聚芳醚酮树脂(PAEK-L)基体的DSC曲线

Figure 1. DSC curve of poly aryl ether ketone resin (PAEK-L) matrix

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图 2 PAEK-L树脂基体的黏流曲线

Figure 2. Viscous flow curves of PAEK-L resin matrix

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图 3 SCF35/PAEK-L复合材料成型工艺

Figure 3. Forming process of SCF35/PAEK-L composite

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图 4 复合材料冲击损伤热压修复示意图

Figure 4. Schematic diagram of hot pressing repair of composites with impact damage

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图 5 SCF35/PAEK-L复合材料不同修复温度下的压缩强度

Figure 5. Compression strength of SCF35/PAEK-L composites at different repair temperatures

CAI—Compression strength of SCF35/PAEK-L composite after impact; CAR—Compression strength of SCF35/PAEK-L composite after repair; CNI—Compression strength of SCF35/PAEK-L composite with no impact damage

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图 6 SCF35/PAEK-L复合材料在不同修复温度下的内部损伤状态：(a) 未修复；(b) 300℃修复；(c) 320℃修复；(d) 340℃修复

Figure 6. Internal damage state of SCF35/PAEK-L composite at different repair temperatures: (a) Without repair; (b) Repair at 300℃; (c) Repair at 320℃; (d) Repair at 340℃

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图 7 SCF35/PAEK-L复合材料不同修复温度下的表面形貌

Figure 7. Surface morphology of SCF35/PAEK-L composites at different repair temperatures

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图 8 SCF35/PAEK-L复合材料在320℃时不同压力修复后的压缩强度

Figure 8. Compressive strength of SCF35/PAEK-L composite after different pressure repair at 320℃

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图 9 SCF35/PAEK-L复合材料在340℃时不同压力修复后的压缩强度

Figure 9. Compressive strength of SCF35/PAEK-L composite after different pressure repair at 340℃

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图 10 SCF35/PAEK-L复合材料不同修复压力下的内部质量：(a) 320℃，1 MPa；(b) 320℃，2 MPa；(c) 320℃，3 MPa；(d) 340℃，1 MPa；(e) 340℃，2 MPa；(f) 340℃，3 MPa

Figure 10. Internal quality of SCF35/PAEK-L composite at different repair pressures: (a) 320℃, 1 MPa; (b) 320℃, 2 MPa; (c) 320℃, 3 MPa;(d) 340℃, 1 MPa; (e) 340℃, 2 MPa; (f) 340℃, 3 MPa

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图 11 SCF35/PAEK-L复合材料修复后的厚度变化

Figure 11. Thickness change of SCF35/PAEK-L composite after repair

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图 12 SCF35/PAEK-L复合材料的冲击损伤形貌：(a) 冲击试样背面形貌；(b) 内部分层损伤区域；(c) 冲击损伤截面形貌

Figure 12. Impact damage morphologies of SCF35/PAEK-L composites:(a) Backside morphology of impact specimen; (b) Internal layered damage areas; (c) Impact damage cross-section morphology

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图 13 SCF35/PAEK-L复合材料冲击损伤在320℃、3 MPa修复后的形貌：(a) 30/32层形貌；(b)截面形貌

Figure 13. Morphologies of SCF35/PAEK-L composite impact damage after repair at 320℃ and 3 MPa: (a) 30/32 ply morphology; (b) Cross-section morphology

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图 14 SCF35/PAEK-L复合材料冲击损伤在340℃、1 MPa修复后的形貌：(a) 30/32层形貌；(b)截面形貌

Figure 14. Morphologies of SCF35/PAEK-L composite impact damage after repair at 340℃ and 1 MPa: (a) 30/32 ply morphology; (b) Cross-section morphology

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图 15 SCF35/PAEK-L复合材料不同冲击损伤修复前、后的表面形貌

D—Diameter; h—Depth

Figure 15. Surface morphologies of SCF35/PAEK-L composite before and after repair of different impact damages

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图 16 SCF35/PAEK-L复合材料不同冲击损伤修复前、后的内部质量

Figure 16. Internal quality of SCF35/PAEK-L composites before and after repair of different impact damages

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图 17 不同冲击能量下SCF35/PAEK-L复合材料修复前、后的压缩强度

Figure 17. Compressive strength of SCF35/PAEK-L composites before and after repaired at different impact energies

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图 18 不同冲击能量下SCF35/PAEK-L复合材料修复后的压缩破坏形貌：(a) 30 J；(b) 50 J；(c) 70 J

Figure 18. Compression damage morphologies of repaired SCF35/PAEK-L composites at different impact energies: (a) 30 J; (b) 50 J; (c) 70 J

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表 1 碳纤维增强聚芳醚酮树脂(SCF35/PAEK-L)预浸带参数及其复合材料基本性能

Table 1. Parameters of carbon fiber reinforced poly aryl ether ketone resin (SCF35/PAEK-L) prepreg andits basic composite properties

Prepreg	FAW/ (g∙m⁻²)	FC/ vol%	RC/ wt%	Tensile properties (0°)		Compression properties (0°)		Flexural properties (0°)
Prepreg	FAW/ (g∙m⁻²)	FC/ vol%	RC/ wt%	Strength/ MPa	Modulus/ GPa	Strength/ MPa	Modulus/ GPa	Strength/ MPa	Modulus/ GPa
SCF35/PAEK-L	145±5	52±3	40±2	1730	119	1140	116	1400	117
Notes：FAW—Fiber areal mass of SCF35/PAEK-L prepreg; FC—Fiber content by volume of SCF35/PAEK-L prepreg; RC—Resin content by mass of SCF35/PAEK-L prepreg.

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表 2 SCF35/PAEK-L复合材料压缩强度恢复率

Table 2. Compression strength recovery of SCF35/PAEK-L composites

Repair parameter	Compression strength after repair/MPa	Recovery rate/%
300℃, 2 MPa	353±12 (30 J)	59
320℃, 1 MPa	403±13 (30 J)	68
320℃, 2 MPa	415±15 (30 J)	70
320℃, 3 MPa	420±15 (30 J)	71
	417±10 (30 J)	70
340℃, 1 MPa	402±7.6 (50 J)	68
	334±12.6 (70 J)	56
340℃, 2 MPa	407±7.5 (30 J)	68
340℃, 3 MPa	391±13.5 (30 J)	66

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