Understanding the role of process parameters in 4D printing: A review

Composites Part B Engineering, Journal Year: 2023, Volume and Issue: 265, P. 110938 - 110938

Published: Aug. 16, 2023

Language: Английский

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Definitive screening design for mechanical properties enhancement in extrusion-based additive manufacturing of carbon fiber-reinforced PLA composite

Progress in Additive Manufacturing, Journal Year: 2024, Volume and Issue: unknown

Published: April 21, 2024

Language: Английский

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A review on material extrusion (MEX) of polyethylene - Challenges, opportunities, and future prospects

Polymer, Journal Year: 2024, Volume and Issue: 307, P. 127333 - 127333

Published: June 28, 2024

Language: Английский

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Influence of 3D-printing deposition parameters on crystallinity and morphing properties of PLA-based materials

Progress in Additive Manufacturing, Journal Year: 2024, Volume and Issue: unknown

Published: April 11, 2024

Abstract Morphing effect control is still a major challenge in 4D-printing of polylactic acid (PLA). In this work, the influence extrusion-based 3D-printing parameters on PLA-based material morphing was studied. A design experiments performed, where 5 factors (printing temperature, bed printing speed, fan and flow) were explored at 2 levels. Crystallinity properties each 3D-printed structure determined discussed. The crystallinity rates specimens ranged from ca. 14% up to 71%. interaction between temperature speed showed significant impact samples crystallinity, using these two their higher levels contributed producing with crystallinity. When exposed an external thermal stimulus 60 °C, all settings capable acquiring temporary shape recover 71% 99% original shape, depending configurations recovery times 8 50 s. configuration that resulted highest rate was: 220 40 80 mm/s, 0%, flow 100%. Regarding time, 180 °C for 10 mm/s 100% 150% longest time. Overall, experimental results clearly transformability materials.

Language: Английский

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Effect of Crystallinity on the Printability of Poly(ethylene Terephthalate)/Poly(butylene Terephthalate) Blends

Polymers, Journal Year: 2025, Volume and Issue: 17(2), P. 156 - 156

Published: Jan. 9, 2025

This study explores the impact of blending polyethylene terephthalate (PET) with polybutylene (PBT) on thermal, structural, and mechanical properties 3D-printed materials. Comprehensive analyses, including Fourier-transform infrared spectroscopy (FT-IR), thermogravimetric analysis (TGA), X-ray diffraction (XRD), differential scanning calorimetry (DSC), testing, were conducted to assess influence blend composition. FT-IR confirmed that PET PBT physically without transesterification, while TGA showed enhanced thermal stability increasing content. XRD revealed crystallize separately, crystallinity decreasing sharply for blends more than 50% PET. The DSC results indicated effectively slows down crystallization kinetics PBT, promoting cold crystallization. Mechanical tests demonstrated elastic modulus remains relatively unchanged, but strain at break decreases a higher content, indicating increased stiffness reduced ductility. Overall, incorporating into improves 3D-printability dimensional stability, reducing warpage enhancing print precision, making these advantageous 3D-printing applications.

Language: Английский

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RECYCLING OF PERSONAL PROTECTIVE EQUIPMENT: SANITISATION, DEGRADATION AND POLYMER BLEND FORMULATIONS

Polymer Degradation and Stability, Journal Year: 2025, Volume and Issue: unknown, P. 111249 - 111249

Published: Feb. 1, 2025

Language: Английский

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Scalable Fabrication of Self‐Reinforced Bioplastic Composites Using Short Fiber Reinforcements

Macromolecular Materials and Engineering, Journal Year: 2025, Volume and Issue: unknown

Published: Feb. 18, 2025

Abstract Bioplastics and biocomposites are eco‐friendly alternatives to their petrochemical derived commodity material, but tend have inferior mechanical thermal properties. In this work, short‐fiber self‐reinforced bioplastic composites (SRBCs) been developed that seek overcome some of these shortcomings. The SRBCs leverage melt‐spun drawn poly(3‐hydroxybutyrate‐co‐3‐hydroxyvalerate) (PHBV) fibers with axially‐oriented crystalline structures exhibit a ≈6.7 °C higher melt temperature than the same PHBV in isotropic form. This enables controlled‐temperature compounding process preserves structure without distortion ensures uniform distribution within matrix. resultant display ≈35% increase ultimate tensile strength ≈55% impact resistance compared neat polymer. monolithic‐type composite system, characterized by high interfacial compatibility strong fiber‐matrix adhesion, also supports high‐value recycling while preserving its properties across multiple lifecycle uses. By focusing upon discontinuous short fiber reinforcement, work provides unprecedented opportunities for scaling through application pathways such as injection molding, compression 3D printing.

Language: Английский

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The improvement of void and interface characteristics in fused filament fabrication-based polymers and continuous carbon fiber-reinforced polymer composites: a comprehensive review

The International Journal of Advanced Manufacturing Technology, Journal Year: 2025, Volume and Issue: unknown

Published: Feb. 21, 2025

Language: Английский

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A review of 3D printing continuous carbon fiber reinforced thermoplastic polymers: Materials, processes, performance enhancement, and failure analysis

Polymer Composites, Journal Year: 2025, Volume and Issue: unknown

Published: April 25, 2025

Abstract Fused filament fabrication (FFF) technology, recognized as a leading 3D printing method for the production of continuous carbon fiber reinforced thermoplastic polymer (CCFRTP) components, has garnered significant attention due to its design flexibility, independence from molds, and capability rapid prototyping complex structures. This paper presents comprehensive analysis review challenges associated with enhancing mechanical properties stemming interfacial bonding issues pore defects in 3D‐printed CCFRTP parts. Specifically, this study thoroughly examines modification techniques pertinent two critical constituents materials: resin matrix reinforcement. It also explores advancements FFF equipment specifically designed alongside current developments related impregnation processes. Furthermore, work introduces an evolution continuum path planning grounded principles structural lightweight while applying topology optimization create anisotropic The influence various process parameters on is analyzed systematically; additionally, processing strategies that incorporate auxiliary reinforcement techniques—such thermopressure, negative pressure, laser application, magnetic fields, microwave energy, infrared radiation—are emphasized. behavior meticulously tracked throughout study, corresponding failure mechanisms are scrutinized through recent characterization methods aimed at visualizing void defects. We critically assess existing technological impede CCFRTPs propose potential future research directions intended inspire further exploration within promising field. Highlights Optimizing interface hinges material matching synergistic CCF mods. CF continuity anisotropy demand refined print/impregnation algorithm. Stress‐guided topo unveils innovative potential. Optimized print ancillary processes facilitate enhanced performance. ensures reliable defect assessment.

Language: Английский

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Enhanced interlayer strength in 3D printed poly (ether ether ketone) parts

Additive manufacturing, Journal Year: 2022, Volume and Issue: 55, P. 102852 - 102852

Published: April 28, 2022

Language: Английский

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