MEX 공정으로 제작된 rCF/PETG 복합재의 rCF 함량에 따른 미세구조 및 기계적 특성 분석
Analysis of Microstructure and Mechanical Properties of rCF/PETG Composites Fabricated by MEX Process as a Function of rCF Content
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초록
Additive Manufacturing (AM) 기술 중 Material Extrusion (MEX) 방식은 다양한 산업 분야에서 널리 사용되고 있으나, 층간 결합력 약화와 열가소성 플라스틱의 낮은 강도로 인한 기계적 특성 저하가 주요 문제점으로 지적되어 왔다. 본 연구에서는 이러한 낮은 기계적 특성 및 폐기물 문제 해결을 위하여 recycle Carbon Fiber(rCF)를 활용한 PETG(Polyethylene Terephthalate Glycol) 기반 복합재료의 특성에 미치는 영향을 분석하였다. PETG/rCF 복합재 필라멘트를 rCF 함량별(0%, 5%, 10%, 15%)로 제작하고, 3D 프린팅 시편을 제조하였다. PETG/rCF 복합재 특성 평가를 위해 열중량분석(TGA), 인장 시험, 주사전자현미경(SEM) 분석을 실시하였다. 인장 시험 결과, rCF 5 wt% 첨가 시 인장강도가 70.21% 증가하였다. SEM을 이용한 파단면 분석 결과, rCF 5 wt% 첨가는 PETG matrix와의 강한 결합을 통해 기계적 특성을 향상시키는 것으로 나타났다. 그러나 rCF 15 wt% 첨가는 공극 증가와 취성 파단을 유발하여 기계적 강도 저하의 원인이 됨을 확인하였다.
Abstract
The material extrusion (MEX) method is a prominent additive manufacturing (AM) technology employed across numerous industrial sectors. However, its applications have been limited by weak interlayer bonding and low strength of thermoplastics. This study investigates the potential of recycle Carbon Fiber(rCF) to enhance the mechanical properties of polyethylene terephthalate glycol (PETG)-based composites, with the aim of enhancing mechanical performance and reducing waste. PETG/rCF composite filaments were fabricated with different rCF contents (0%, 5%, 10%, and 15%), and 3D printed specimens were prepared. Thermogravimetric analysis (TGA), tensile test, and scanning electron microscopy (SEM) analysis were performed to characterize the PETG/rCF composites. The tensile test results showed that the addition of 5 wt% rCF increased the tensile strength by 70.21%. Fracture surface analysis using SEM showed that the addition of rCF 5 wt% improved the mechanical properties through stronger bonding with the PETG matrix. However, the addition of rCF 15 wt% caused an increase in voids and brittle fracture, resulting in a decrease in mechanical strength.
참고문헌 (21)
- Muhamedagic, K., "Effect of Process Parameters on Tensile Strength of FDM Printed Carbon Fiber Reinforced Polyamide Parts", Applied Sciences, 12(12), pp.6028~ (2022)
- Messimer, S. L., "Characterization and Processing Behavior of Heated Aluminum-polycarbonate Composite Build Plates for the FDM Additive Manufacturing Process", Journal of Manufacturing and Materials Processing, 2(1), pp.12~ (2018)
- Boyard, N., "Support Optimization for Additive Manufacturing : Application to FDM", Rapid Prototyping Journal, 24(1), pp.69~79 (2018)
- Shashikumar, S., "The Effect of Printing Parameters on Tensile Properties of Thermoplastics Prepared By Fused Deposition Modeling(FDM)Based Additive Manufacturing Technique", Materials Today : Proceedings, 90, pp.256~261 (2023)
- Wang, X., "3D Printing of Polymer Matrix Composites : A Review and Prospective", Composites Part B : Engineering, 110, pp.442~458 (2017)
- Vălean, C., "Effect of Multiple Process Parameters on Optimizing Tensile Properties for Material Extrusion-based Additive Manufacturing", Construction and Building Materials, 414, pp.135015~ (2024)
- Galloway, M., "Implementation of Nozzle Motion for Material Extrusion Additive Manufacturing in Ansys Fluent", Virtual and Physical Prototyping, 19(1), pp.e2397816~ (2024)
- Sun, Q., "Effect of Processing Conditions on the Bonding Quality of FDM Polymer Filaments", Rapid Prototyping Journal, 14(2), pp.72~80 (2008)
- Lambiase, F., "A Multidisciplinary Approach to Investigate the Influence of Process Parameters on Interlayer Adhesion in Material Extrusion Additive Manufacturing", The International Journal of Advanced Manufacturing Technology, 133(11), pp.5553~5570 (2024)
- Sadaf, M., "Advancements in Metal Additive Manufacturing : A Comprehensive Review of Material Extrusion with Highly Filled Polymers", Journal of Manufacturing and Materials Processing, 8(1), pp.14~ (2024)
- Omar, N. W. Y., "Mechanical and Physical Properties of Recycled-carbon-fiber-reinforced Polylactide Fused Deposition Modelling Filament", Materials, 15(1), pp.190~ (2021)
- Ning, F., "Additive Manufacturing of Carbon Fiber Reinforced Thermoplastic Composites Using Fused Deposition Modeling", Composites Part B : Engineering, 80, pp.369~378 (2015)
- Seok, W., "Effects of Annealing for Strength Enhancement of FDM 3D-printed ABS Reinforced with Recycled Carbon Fiber", Polymers, 15(14), pp.3110~ (2023)
- Li, S., "Interfacial Modification of Carbon Fiber by Carbon Nanotube Gas-phase Dispersion", Composites Science and Technology, 195, pp.108196~ (2020)
- Jang, Y. Y., "Dissimilar Material Bonding Technology for Lightweight Future Mobility : A Review", Polymer Testing, 129, pp.108281~ (2023)
- Liao, G., "Properties of Oriented Carbon Fiber", polyamide 12 Composite Parts Fabricated by Fused Deposition Modeling, 2018, pp.139, 283~292
- Wang, Z., "Influences of Isothermal Annealing Post-treatment on Mechanical Performances in Fused Deposition Modeling Manufactured Short Carbon Fibrous PETG and PA Composites", Polymer Engineering & Science, 64(12), pp.6247~6264 (2024)
- Pakdel, E., "Recent Progress in Recycling Carbon Fibre Reinforced Composites and Dry Carbon Fibre Wastes", Resources, Conservation and Recycling, 166, pp.105340~ (2021)
- Giani, N., "Towards Sustainability in 3D Printing of Thermoplastic Composites : Evaluation of Recycled Carbon Fibers as Reinforcing Agent for FDM Filament Production and 3D Printing", Composites Part A : Applied Science and Manufacturing, 159, pp.107002~ (2022)
- Duty, C., "What Makes a Material Printable? A Viscoelastic Model for Extrusion-based 3D Printing of Polymers", Journal of Manufacturing Processes, 35, pp.526~537 (2018)
- Ateeq, M., "A Review of 3D Printing of the Recycled Carbon Fiber Reinforced Polymer Composites : Processing, Potential, and Perspectives", Journal of Materials Research and Technology, 26, pp.2291~2309 (2023)