Mechanical properties and fracture characterization of additive manufacturing polyamide 12 after accelerated weathering

The additive manufacturing (AM) methods, selective laser sintering (SLS) and multi jet fusion (MJF), are increasingly used for end-use polymer parts. Chemical reactions caused by ionizing radiation catalyzed oxygen, moisture, heat known to degrade the structure, result in visual defects, loss of mechanical properties. However, effects AM layer-wise process on degradation not widely studied. Yet, they may have implications properties fracture mechanisms components. This paper presents an open access data repository after weathering plastics, conventionally manufactured two clear protective coatings. All materials were exposed a 1500-h accelerated cycle (ISO-4982-3) followed tensile testing (ISO-527). Special attention was given polyamide 12 (PA12) produced via powder bed build orientations. surfaces PA12 glass-filled further studied with scanning electron microscopy. PA12, carbon reinforced PA12. Traditionally included molybdenum disulfide-filled PA66, PMMA, ABS, PC, cast No differences found between orientations or performance. strongly affected weathering. Carbon UV varnish experienced least changes. Weathering resistance increased increase deviation coatings observed. contrary results ductility PA66 would merit studies. • Tensile 9 tested Additive orientation significant factor. Protective improved yet deviation. Particle-reinforced polyamides modulus changes