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Investigating the Characteristics of Nano-Graphite Composites Additively Manufactured Using Stereolithography
Ariyana Dwiputra Nugraha1, Vishnu Vijay Kumar2,3, Jessie Puteri Gautama2
1PLN Research Institute, Jakarta 12760, Indonesia.
Polymers
|April 27, 2024
Summary
Adding nano-graphite to stereolithography (SLA) fabricated resin composites improves properties like viscosity and hardness. Higher nano-graphite content increases opacity and viscosity but can negatively impact moisture content and mechanical strength, affecting material performance.
Area of Science:
- Materials Science
- Additive Manufacturing
Background:
- Stereolithography (SLA) is a 3D printing technique for complex structures.
- Standard resin components often exhibit suboptimal material properties.
Purpose of the Study:
- To investigate the enhancement of nano-graphite composites fabricated using SLA.
- To evaluate the impact of varying nano-graphite concentrations on material properties.
Main Methods:
- Fabrication of nano-graphite/UV-curable resin composites at varying weight percentages (0.2% to 5%).
- Comprehensive material characterization including viscosity, UV spectroscopy, moisture content, water absorption, gel content, tensile, bending, hardness, and microscopic analysis.
Main Results:
- Increased nano-graphite content led to higher viscosity and opacity.
- Higher concentrations of nano-graphite negatively affected moisture content, potentially causing warping and cracking.
- Tensile and bending tests indicated significant property changes with increasing nano-graphite, influencing fracture behavior.
- Chemical resistance testing showed less consistent variations across different nano-graphite percentages.
Conclusions:
- Nano-graphite addition significantly alters the properties of SLA-fabricated composites.
- Optimizing nano-graphite content is crucial for balancing desired improvements with potential drawbacks in mechanical and physical characteristics.
- The study provides valuable data for the application of nano-graphite in SLA-based material development.
