Eventos Anais de eventos
COBEM 2023
27th International Congress of Mechanical Engineering
The Effects of Controlled Graphene Addition on Stereolithography-produced Materials
Submission Author:
Matheus Klement , SC
Co-Authors:
Matheus Klement, Rafael Perottoni, Natalia Daudt, Alexandre Aparecido Buenos, Juliana Rosemara Felisberto da Silva
Presenter: Matheus Klement
doi://10.26678/ABCM.COBEM2023.COB2023-1631
Abstract
To improve the characteristics of the material produced by stereolithography, experiments were conducted involving the controlled addition of graphene to the photopolymerizable resin. Graphene, a two-dimensional material composed of carbon atoms arranged in a hexagonal lattice, theoretically enhance the mechanical properties of a range of materials due to its high strength, stiffness, and durability. Proportions of 0.3% and 0.5% of graphene were added to the resin, and subsequent chemical and mechanical analyses were carried out to determine the effect on the maximum stress, yield stress and modulus of elasticity. To evaluate the ratio that best fit the manufacturing method and future applications in various industries, including the medical, automotive, aerospace, and electrical industries. It was found that excessive amounts of graphene could negatively affect the manufacture of the specimens and the chemical and mechanical performance in the analyses. Therefore, it will be essential to determine the optimal ratio of graphene to resin for each application. Tensile tests were performed on each manufactured test specimen of photopolymerizable resin, both with and without the addition of graphene, to evaluate the mechanical properties of composites with different compositions. The parts with graphene addition showed a significant reduction in maximum stress supported and a slight increase in the modulus of elasticity. One possible cause are the porosities created during the photopolymerization process, where the graphene nanoparticles prevented the ultraviolet rays from reaching all points of the composite. Possibly, an improvement in the resin homogenization could bring benefits and alter the results in a way that improves the mentioned properties. By analyzing the data and graphics, valuable insights were gained into how the addition of graphene affects the mechanical properties of the material. This knowledge can enable the fabrication of composites that provide the exact properties required for specific applications. In conclusion, the controlled addition of graphene to photopolymerizable resin has the potential to modify the mechanical properties of materials produced by stereolithography. By carefully determining the optimal ratio of graphene to resin, composites can be fabricated that provide the required mechanical strenght, stiffness , and durability for a variety of applications across different industries.
Keywords
Stereolithography, graphene, Photopolymerizable resin, Composites
