高刚度 3D 打印连续间距碳纤维增强聚合物复合材料

IF 2.3 3区 材料科学 Q3 MATERIALS SCIENCE, COMPOSITES Journal of Composite Materials Pub Date : 2024-05-02 DOI:10.1177/00219983241249526
Menna A Saleh, Sinan Olcun, Mohamed Karam, Roger Kempers, Garrett W Melenka
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引用次数: 0

摘要

本研究介绍了一种使用改进型开源三维打印机三维打印高刚度沥青基碳纤维(CF)增强聚乳酸(PLA)复合材料的方法。采用熔融长丝制造(FFF)技术制造样品,交替层叠聚乳酸和聚乳酸涂层沥青基碳纤维。测量了 3D 打印复合材料样品的拉伸杨氏模量,以确定不同等级和体积分数的沥青 CF 对打印复合材料性能的影响。使用了三种不同杨氏模量的沥青 CF,其体积分数从 2.4% 到 8.4%不等。拉伸试验显示,体积分数为 7.3% 的 K1392U CF 增强复合材料与纯 3D 打印聚乳酸相比,杨氏模量提高了 850%。在 CF 体积分数相对较低的情况下,这一改进明显高于以往任何 3D 打印碳基复合材料。统计分析显示,所有测试的三维打印复合材料样品的杨氏模量都有所增加。实验值与 Halpin-Tsai 模型进行了比较,结果表明,由于沥青基纤维的相对刚度,在三维打印过程中发生了一定程度的纤维断裂。本文讨论了未来的发展方向和工艺改进建议。
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High stiffness 3D-printed continuous pitch carbon fiber reinforced polymer composites
This study presents a method for 3D printing very high stiffness pitch-based carbon fiber (CF) reinforced polylactic acid (PLA) composites using a modified open-source 3D printer. The fused filament fabrication (FFF) technique was used to fabricate the samples with alternating layers of PLA and PLA-coated pitch CF. The tensile Young’s modulus of the 3D-printed composite samples was measured to characterize the effect of different grades and volume fractions of pitch CF on the behaviour of the printed composites. Three grades of pitch CF which have different Young’s modulus were used with volume fractions ranging from 2.4 to 8.4%. Tensile tests showed that the K1392U CF reinforced composite with a 7.3% volume fraction demonstrated the highest improvement in Young’s modulus of 850% compared to neat 3D-printed PLA. This improvement is notably higher than any previous 3D-printed carbon-based composites at a relatively low volume fraction of CF. Statistical analysis showed increased Young’s modulus in all of 3D-printed composite samples tested. The experimental values were compared to the Halpin-Tsai model and suggest that some degree of fibre breakage occurred during the 3D printing process owing to the relative stiffness of the pitch-based fibers. Future directions and suggestions for process improvements are discussed.
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来源期刊
Journal of Composite Materials
Journal of Composite Materials 工程技术-材料科学:复合
CiteScore
5.40
自引率
6.90%
发文量
274
审稿时长
6.8 months
期刊介绍: Consistently ranked in the top 10 of the Thomson Scientific JCR, the Journal of Composite Materials publishes peer reviewed, original research papers from internationally renowned composite materials specialists from industry, universities and research organizations, featuring new advances in materials, processing, design, analysis, testing, performance and applications. This journal is a member of the Committee on Publication Ethics (COPE).
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