Sustainable Compositions and 3D Printing Technologies for Characterizing and Optimizing Recycled PETG

Abstract

The packing industry makes extensive use of terephthalate polyesters because of their chemical durability and optical qualities. Examples of these materials are polyethylene terephthalate (PET) and glycol-modified PET (PETG). They also supply building materials, medical technology, technical polymers, and the textile sector. PET is made of terephthalic acid as well as ethylene glycol, whereas 30% of the diol moles in PETG are replaced with CHDM during synthesis. Detailed structural analyses of polyethylene terephthalate glycol-modified (PETG) are presented in this study. In two directions, PETG square blocks were tested with a load of 12,200 N to determine their durability and mechanical response. This block experienced a total deformation of 0.2318 mm under vertical loading, with the outer layer experiencing 33.93 MPa, and the middle layer experiencing 23.148 MPa. According to its performance under vertical stress, PETG had a maximum fatigue life of approximately 572,540 cycles and a minimal safety factor of 0.035116. A deformation of 0.23192 mm was recorded under horizontal loading. The bottom layer had a stress of 46.317 MPa and the top layer had a stress of 20.174 MPa, with a better fatigue life of 616,880 cycles and a safety factor of 0.35979.

Keywords

• 3d printing
• petg
• square blocks
• simulation
• optimization
• manufacturing