EFFECT OF PROCESS PARAMETERS ON THE COMPRESSIVE BEHAVIOR OF PEKK PARTS FABRICATED BY MATERIAL EXTRUSION ADDITIVE MANUFACTURING

Paul Sebastian SUCIU, Sebastian-Marian ZAHARIA, Lucia-Antoneta CHICOS, Mihai Alin POP, Camil LANCEA

Abstract


The material polyetherketoneketone (PEKK), belongs to the high-performance polymers family and has exceptional mechanical strength, thermal stability and chemical resistance. The material is used in the process of fused filament fabrication (FFF) and have been used in many applications for medical sector, automotive and aerospace. The scope of this study was to analyze the influence of the 3D printing parameters, the internal configuration type (honeycomb) and the infill density on the compressive strength of the 3D printed PEKK-SC specimens. Following the tests, it was concluded that the Fast Honeycomb pattern has higher compressive strength in comparation with the Full Honeycomb configuration. Infill density plays an important role when it comes to 3D printed products and the results related to this study suggests that the value of the compressive strength increases as the percentage of infill density goes up. The Shore D hardness of the material was determined and the microscopic analyze of FFF printed specimens was conducted as well.


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References


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