| Penulis/Author |
Ariyana Dwiputra Nugraha (1); Vishnu Vijay Kumar (2); Jessie Puteri Gautama (3); Ardi Wiranata, S.T., M. Eng., Ph.D (4); Kevin Gausultan, S.T.,M.Eng.,M.Sc (5); Muhammad Ibnu Rashyid (6); Rachmat Dzanzani (7); Ir. Muhammad Akhsin Muflikhun, S.T., MSME., Ph.D (8) |
| Abstrak/Abstract |
Stereolithography has emerged as a recent method in fabricating complex structures with
high accuracy. Components using resin have poorer properties. The current study investigates the
improvement in the properties of nano-graphite composites fabricated by the SLA technique. The
properties are compared for plain resin and 0.2%, 0.5%, 1%, 3%, and 5% (w/v) of nano-graphite
mixed with the UV-curable resin. Various analyses were conducted, including viscosity, UV spectroscopy, moisture content, water absorption, gel content, tensile, bending, hardness testing, and
microscopic characterization. The results from the experiments showed a difference in the results
of each percentage of the specimen tested, such as the specimen property, which shows that the
greater the percentage of nano-graphite added (5%), the opaquer the specimen will appear and
less light will be reflected. Viscosity testing shows that the greater the percentage of nano-graphite
added to the resin, the greater the viscosity. UV spectroscopy testing produced information about
the electronic structure and the structure of molecules, such as their composition, purity, and concentration. Observations from the moisture content analysis found that the moisture content in
specimens with higher percentages of nano-graphite affected physical and mechanical properties,
leading to easier warping, cracking, decreased strength, etc. Tensile and bending testing shows that
the greater the percentage of nano-graphite added, the greater the effect on physical and mechanical
properties, including fracture. However, certain tests did not consistently yield significant variations
among specimens when different percentages of nano-graphite were added, as particularly evident in
chemical resistance testing. This study offers valuable insights into the application of nano-graphite
composites fabricated via the SLA method |
