Materials Today, Год журнала: 2023, Номер 69, С. 160 - 192
Опубликована: Сен. 20, 2023
Язык: Английский
Composites Part B Engineering, Год журнала: 2023, Номер 265, С. 110938 - 110938
Опубликована: Авг. 16, 2023
Язык: Английский
Процитировано
24
Progress in Additive Manufacturing, Год журнала: 2024, Номер unknown
Опубликована: Апрель 21, 2024
Язык: Английский
Процитировано
10
Polymer, Год журнала: 2024, Номер 307, С. 127333 - 127333
Опубликована: Июнь 28, 2024
Язык: Английский
Процитировано
10
Progress in Additive Manufacturing, Год журнала: 2024, Номер unknown
Опубликована: Апрель 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.
Язык: Английский
Процитировано
9
Polymers, Год журнала: 2025, Номер 17(2), С. 156 - 156
Опубликована: Янв. 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.
Язык: Английский
Процитировано
1
Polymer Degradation and Stability, Год журнала: 2025, Номер unknown, С. 111249 - 111249
Опубликована: Фев. 1, 2025
Язык: Английский
Процитировано
1
Macromolecular Materials and Engineering, Год журнала: 2025, Номер unknown
Опубликована: Фев. 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.
Язык: Английский
Процитировано
1
The International Journal of Advanced Manufacturing Technology, Год журнала: 2025, Номер unknown
Опубликована: Фев. 21, 2025
Язык: Английский
Процитировано
1
Polymer Composites, Год журнала: 2025, Номер unknown
Опубликована: Апрель 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.
Язык: Английский
Процитировано
1
Additive manufacturing, Год журнала: 2022, Номер 55, С. 102852 - 102852
Опубликована: Апрель 28, 2022
Язык: Английский
Процитировано
30