Study on the Introduction of Carbon Nanotubes into Carbon Fiber Reinforced Heterocyclic Phthalazinone Biphenyl Poly(aryl ether sulfone ketone) Composite Interlaminar Regions <italic style="font-style: italic">via</italic> Two-step Solution Impregnation and Their Interlaminar Toughening Effect

Shan Cheng; Zheng-hui Liu; Ning Wang; Qing-feng Sun; Nan Li; Xi-gao Jian

doi:10.11777/j.issn1000-3304.2025.25258

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Study on the Introduction of Carbon Nanotubes into Carbon Fiber Reinforced Heterocyclic Phthalazinone Biphenyl Poly(aryl ether sulfone ketone) Composite Interlaminar Regions via Two-step Solution Impregnation and Their Interlaminar Toughening Effect

Research Article | 更新时间：2026-03-23

- Study on the Introduction of Carbon Nanotubes into Carbon Fiber Reinforced Heterocyclic Phthalazinone Biphenyl Poly(aryl ether sulfone ketone) Composite Interlaminar Regions via Two-step Solution Impregnation and Their Interlaminar Toughening Effect
- Acta Polymerica Sinica Vol. 57, Issue 3, Pages: 786-793(2026)
- 作者机构：
  
  1.大连理工大学，化工学院精细化工国家重点实验室，大连 116024
  2.大连理工大学，辽宁省高性能树脂工程技术研究中心，大连 116024
  3.大连理工大学，材料科学与工程学院，大连 116024
- 作者简介：
  
  Nan Li, E-mail: polymerlinan@dlut.edu.cn
  Xi-gao Jian, E-mail: jian4616@dlut.edu.cn
- 基金信息：
- DOI：10.11777/j.issn1000-3304.2025.25258
  CLC：
- CSTR：32057.14.GFZXB.2025.7518
- Received：07 October 2025，
  
  Accepted：12 November 2025，
  
  Online First：04 January 2026，
  
  Published：20 March 2026
- 稿件说明：
移动端阅览
程杉, 刘政辉, 王宁, 孙庆枫, 李楠, 蹇锡高. 基于两步溶液浸渍在碳纤维增强杂萘联苯聚芳醚砜酮复合材料层间引入碳纳米管及其层间增韧的研究. 高分子学报, 2026, 57(3), 786-793.

Cheng, S., Liu, Z. H., Wang, N., Sun, Q. F., Li, N., Jian, X. G. Study on the introduction of carbon nanotubes into carbon fiber reinforced heterocyclic phthalazinone biphenyl poly(aryl ether sulfone ketone) composite interlaminar regions via two-step solution impregnation and their interlaminar toughening effect. Acta Polymerica Sinica (in Chinese), 2026, 57(3), 786-793.
程杉, 刘政辉, 王宁, 孙庆枫, 李楠, 蹇锡高. 基于两步溶液浸渍在碳纤维增强杂萘联苯聚芳醚砜酮复合材料层间引入碳纳米管及其层间增韧的研究. 高分子学报, 2026, 57(3), 786-793. DOI： 10.11777/j.issn1000-3304.2025.25258. CSTR： 32057.14.GFZXB.2025.7518.

Cheng, S., Liu, Z. H., Wang, N., Sun, Q. F., Li, N., Jian, X. G. Study on the introduction of carbon nanotubes into carbon fiber reinforced heterocyclic phthalazinone biphenyl poly(aryl ether sulfone ketone) composite interlaminar regions via two-step solution impregnation and their interlaminar toughening effect. Acta Polymerica Sinica (in Chinese), 2026, 57(3), 786-793. DOI： 10.11777/j.issn1000-3304.2025.25258. CSTR： 32057.14.GFZXB.2025.7518.

摘要

本研究基于两步溶液浸渍的方法在复合材料层间引入碳纳米管(CNTs)，以解决热塑性复合材料因层间树脂富集，缺乏增强相而导致的层间性能薄弱问题. 第一步浸渍确保树脂充分渗透至纤维束内部，第二步则实现CNTs在层间区域的分散. 并系统研究了CNTs添加量对复合材料层间断裂韧性及面内力学性能的影响. 实验结果表明，当CNTs质量分数为1.0 wt%时，复合材料层间断裂韧性最优，I型起始和扩展断裂韧性分别达到1.23和1.27 kJ/m

，相比未处理复合材料显著提高了51.85%和42.70%；Ⅱ型层间断裂韧性为1.82 kJ/m

，增幅达44.80%. 同时，该方法未损害材料面内性能，弯曲强度提升至1414 MPa. 扫描电子显微镜断口分析显示，改性后的复合材料断面更为粗糙，且呈现微裂纹特征，表明裂纹扩展路径趋于复杂. 该方法实现了CNTs在富树脂夹层区域中的分布，为制备高层间性能复合材料提供了一条简便有效的技术路径.

Abstract

This study employed a two-step solution impregnation method to introduce carbon nanotubes (CNTs) between composite layers

addressing the weak interlaminar performance of thermoplastic composites caused by resin-rich interlaminar regions lacking reinforcing

phases. The first impregnation step ensured thorough resin penetration into fiber bundles

while the second achieved CNTs dispersion in interlaminar zones. A systematic investigation was conducted on how CNTs content affects the composite's interlaminar fracture toughness and in-plane mechanical properties. The experimental results indicated that when the CNTs content reached 1.0 wt%

the composite material achieved optimal interlaminar fracture toughness. The Mode I initiation and propagation fracture toughness values reached 1.23 and 1.27 kJ/m

respectively

representing significant improvements of 51.85% and 42.70% compared to the untreated composite. The Mode Ⅱ interlaminar fracture toughness measured 1.82 kJ/m

with an increase of 44.80%. Meanwhile

this method did not compromise the in-plane properties of the material

and the flexural strength was enhanced to 1414 MPa. SEM fractographic analysis revealed that the modified composite exhibited rougher fracture surfaces with microcrack characteristics

indicating more complex crack propagation paths. This method achieved the distribution of CNTs in resin-rich interlayer regions

providing a simple and effective technical pathway for preparing high-interlaminar performance composite materials.

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Keywords

references

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Study on the Introduction of Carbon Nanotubes into Carbon Fiber Reinforced Heterocyclic Phthalazinone Biphenyl Poly(aryl ether sulfone ketone) Composite Interlaminar Regions via Two-step Solution Impregnation and Their Interlaminar Toughening Effect

DOI：10.11777/j.issn1000-3304.2025.25258

摘要

Abstract

关键词

Keywords

references