Investigation of sizing materials for carbon fiber reinforced thermoplastic composites

IF 3.6 4区 材料科学 Q2 MATERIALS SCIENCE, COMPOSITES
Zelal Yavuz, Yahya Öz, Remzi Ecmel Ece, Fahrettin Öztürk
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Abstract

For the manufacturing of mechanically strong and lightweight composite aerostructures reinforcement materials (e.g. carbon fibers, CFs) are the most convenient way. Therefore, sizing of carbon fibers is crucial for guiding them into service by protecting the CF’s surface. In this study, a novel sizing agent was developed and effects of this sizing on CFs’ physicochemical as well as surface properties were investigated. The impact on the fiber-matrix interphase behavior was analyzed. Results reveal that the surface free energy of CF was increased from 5.67 mJ/m2 to 13.13 mJ/m2 through sizing by enhancing the wettability property of CF. In addition, surface topography analyses indicate that the surface roughness Ra is 3.70 ± 2.59 nm for neat CF; 1.01 ± 0.65 nm for Polyetherimide (PEI) sized CF; and 1.71 ± 1.14 nm for PEI-Polyether ether ketone (PEEK) sized CF. Finally, it was concluded that an increment in the wettability can be related with chemical changes on the fiber’s surface.
碳纤维增强热塑性复合材料的施胶材料研究
对于制造机械强度高、重量轻的复合航空结构而言,增强材料(如碳纤维)是最便捷的方法。因此,碳纤维的上浆对于通过保护碳纤维表面引导其投入使用至关重要。本研究开发了一种新型上浆剂,并研究了这种上浆剂对碳纤维物理化学和表面特性的影响。分析了其对纤维-基质相间行为的影响。结果表明,通过施胶增强了 CF 的润湿性,CF 的表面自由能从 5.67 mJ/m2 增加到 13.13 mJ/m2。此外,表面形貌分析表明,纯 CF 的表面粗糙度 Ra 为 3.70 ± 2.59 nm;聚醚酰亚胺 (PEI) 尺寸 CF 的表面粗糙度 Ra 为 1.01 ± 0.65 nm;PEI-聚醚醚酮 (PEEK) 尺寸 CF 的表面粗糙度 Ra 为 1.71 ± 1.14 nm。最后得出的结论是,润湿性的增加与纤维表面的化学变化有关。
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来源期刊
Journal of Thermoplastic Composite Materials
Journal of Thermoplastic Composite Materials 工程技术-材料科学:复合
CiteScore
8.00
自引率
18.20%
发文量
104
审稿时长
5.9 months
期刊介绍: The Journal of Thermoplastic Composite Materials is a fully peer-reviewed international journal that publishes original research and review articles on polymers, nanocomposites, and particulate-, discontinuous-, and continuous-fiber-reinforced materials in the areas of processing, materials science, mechanics, durability, design, non destructive evaluation and manufacturing science. This journal is a member of the Committee on Publication Ethics (COPE).
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