Análisis de dureza, resistencia a la tracción y desgaste de materiales termoplásticos obtenidos a partir de la resina Tough de prototipado robusto para impresión 3D por estereolitografía (SLA)

Abstract

For this experimental work, Clear resin and Tough resin were used. Clear resin is one of the most widely used commercial prototype resins. On the other hand, Tough resin is used in the engineering field (mainly in scale mechanical components). All these resins are used in stereolithography 3D printing. The investigation considered 3 different post-cure times, all of them recommended by the manufacturer. Three types of curing were used: no curing, normal curing and maximum curing. For the Clear resin, post-curing times of 0, 15 and 30 minutes were applied under the incidence of UV rays. While for the Tough resin, times of 0, 60 and 120 minutes were considered. The CAD models were produced taking into account international testing standards (ASTM D638 and ISO 9352). This is due to hardness, traction and abrasion tests. The abrasion and hardness tests were carried out in the university laboratories. The tensile test is a compendium of several authors whose information has been verified and approved, that is, their level of confidence is high. Once the tests had been carried out, it was determined that the standard resin (Clear), in terms of hardness, has a higher grade compared to Tough. On the other hand, Engineering resin (Tough) has less resistance to abrasion. The tensile results affirm that both resins do not have a marked difference in their behavior.