热固性树脂过渡层对聚醚砜树脂基碳纤维复合材料界面性能的增强改性

许培俊; 李兆; 郭新良; 刘荣海; 吴道生

热固性树脂过渡层对聚醚砜树脂基碳纤维复合材料界面性能的增强改性

1.
长安大学　材料科学与工程学院, 西安710064
2.
云南电网有限责任公司电力科学研究院, 昆明 650217
3.
陕西三防三诚特种材料科技有限公司, 西安 710000

基金项目: 国家自然科学基金(51978072)；陕西省重点研发计划项目(2022GY-371, 2023QCY-LL-26)；长安大学中央高校基本科研业务费专项资助(300102312404)。

详细信息

通讯作者:
许培俊，博士，教授，博士生导师，主要从事聚合物基复合材料方面的研究。　E-mail：xupeijun@chd.edu.cn

中图分类号: TB332
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出版历程
- 收稿日期: 2023-09-20
- 修回日期: 2023-11-12
- 录用日期: 2023-11-26
- 网络出版日期: 2024-01-02
- 刊出日期: 2024-07-15

Enhanced modification of interface performance of polyethersulfone resin matrix carbon fiber composite by thermosetting resin transition layer

1.
School of Materials Science and Engineering, Chang'an University, Xi'an 710064, China
2.
Electric Power Research Institute of Yunnan Power Grid CO., LTD., Kunming 650217, China
3.
Shaanxi Sanfang Sancheng Special Materials Technology Co., LTD., Xi'an 710064, China

Funds: National Natural Science Foundation of China (No.51978072); Key Research and Development Program of Shaanxi (No.2022GY-371, 2023QCY-LL-26); Supported by the Fundamental Research Funds for the Central Universities of Chang'an University (No.300102312404).

摘要

摘要: 聚醚砜(PES)树脂具有优良的耐热性能、机械性能以及高温稳定性能，可以用来制备高性能热塑性树脂基碳纤维复合材料。但由于PES树脂与商品级碳纤维界面黏结性较差，导致PES树脂基碳纤维复合材料表现出较差的界面性能。在前期研究中发现，热固性氰酸酯(CE)树脂具有熔融流动性好、与PES树脂熔融温度相近的固化温度，以及与PES树脂有一定相容性的优势。本文采用CE树脂作为PES树脂基碳纤维复合材料的界面过渡层，利用过渡层树脂与碳纤维表面上浆剂的优异结合能力及其与PES树脂形成的良好机械啮合作用，研究热固性树脂过渡层对热塑性树脂基复合材料界面性能的影响。结果表明：引入CE树脂过渡层能够改善PES基碳纤维复合材料的界面黏结性能。与碳纤维(CF)/PES复合材料相比，引入10wt%CE树脂过渡层的CF/(10%CE-PES)-L复合材料弯曲强度提高了18.7%，层间剪切强度提高24.2%，CF/(5%CE-PES)-L复合材料玻璃化温度T_g从166℃提高到179℃。通过在热塑性树脂基体与商品碳纤维之间添加过渡层的方法制备热塑性树脂基碳纤维复合材料，解决了热塑性树脂基碳纤维复合材料界面性能较差的问题，为其在工程化应用方面提供了重要的研究思路和理论依据。
- 聚醚砜 /
- 氰酸酯树脂 /
- 碳纤维 /
- 复合材料 /
- 界面强度
Abstract: Polyether Sulfone (PES) resin possesses excellent heat resistance, mechanical properties, and high-temperature stability, making it suitable for the production of high-performance thermoplastic resin-based carbon fiber composite materials. However, due to the poor interfacial adhesion between PES resin and commercial grade carbon fibers, PES resin based carbon fiber composites exhibit poor interfacial properties. In previous studies, we discovered that thermosetting cyanate ester (CE) resin had advantages such as good melt flowability, a curing temperature close to that of PES resin, and some compatibility with PES resin. In this paper, CE resin is utilized as an interface transition layer for PES resin-based carbon fiber composite materials, Leveraging the transition layer resin's excellent bonding capability with the carbon fiber surface sizing agents and its strong mechanical interlocking with PES resin, the impact of the thermosetting resin transition layer on the interface performance of thermoplastic resin-based composite materials is investigated by us. The results demonstrate that introducing a CE resin transition layer can enhance the interfacial bonding performance of PES-based carbon fiber composite materials. Compared to carbon fiber (CF)/PES composite materials, the CF/(10%CE-PES)-L composite material with a 10wt% CE resin transition layer exhibits an 18.7% increase in flexural strength, a 24.2% increase in interlaminar shear strength, additionally, the glass transition temperature (T_g) of the CF/(5%CE-PES)-L composite material increased from 167℃ to 179℃. The method of preparing thermoplastic resin-based carbon fiber composites by adding an interlayer between the thermoplastic resin matrix and commercial carbon fibers has addressed the issue of poor interface performance in thermoplastic resin-based carbon fiber composites. This investigation important research insights and a theoretical basis for its engineering applications.
- polyethersulfone /
- cyanate ester resin /
- carbon fiber /
- composite materials /
- interfacial strength.

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图 1 微滴脱黏样品示意图

Figure 1. Micro droplet debonding sample

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图 2 碳纤维复合材料制备流程: (a)过渡层法；(b)共混改性法

Figure 2. Preparation process of carbon fiber composite: (a)transition layer method; (b) blending modification method

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图 3 碳纤维复合材料弯曲性能

Figure 3. Bending performance of carbon fiber composite

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图 4 过渡层法纤维-树脂作用示意图

Figure 4. Transition layer method of fiber-resin

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图 5 碳纤维复合材料层间剪切强度

Figure 5. Interlayer shear strength of carbon fiber composite

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图 6 碳纤维复合材料储能模量

Figure 6. Energy storage modulus of carbon fiber composite

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图 7 碳纤维复合材料损耗模量

Figure 7. Loss modulus of carbon fiber composite

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图 8 树脂基体的TG曲线和DTG曲线

Figure 8. TG and DTG curves of resin matrix

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图 9 碳纤维复合材料扫描电镜图

(a-e)为弯曲试样拉伸断裂面；(f)为冲击试样冲击断面。

Figure 9. SEM of carbon fiber composites

(a-e): tensile fracture surfaces of bending specimens; (f): impact fracture surfaces of impact specimens

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图 10 单丝复合材料界面剪切强度和扫描电镜图

Figure 10. Shear strength and SEM of monofilament interface

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