On prospectsof production of filaments based on polyamide 6 for FDM-printing
The analysis of the prospects for the development of FDM-printing technology is carried out in the introduction. The purpose of this work is to substantiate the feasibility and efficiency of obtaining a polymer filament based on polyamide 6 for obtaining polymer products by layer-by-layer fusion. Studies of the possibility of obtaining polymer products based on PA 6 and its compositions by layer-by-layer fusion were carried out in the work. The prospect of conducting research to study the possibility of using PA6 in the field of additive technologies is substantiated. Prototypes of filament based on PA6-210 / 310 (Grodnamid) produced by JSC “Grodno Azot”, as well as prototypes in the form of standard samples for testing have been received. The possibility of obtaining a polymeric filament based on PA6 for subsequent use in printing polymer products and determining the modes of extrusion of a filament under laboratory conditions for obtaining is shown in the main part of the article. The influence of the composition of PA 6 and the technological modes of 3D printing on the deformation and strength characteristics of products obtained by the additive method, as well as on the accuracy indicators of FDM-printing is shown. Technological conditions for obtaining the highest quality products based on PA 6 have been determined. Tests of strength indicators of printed prototypes have been carried out. The mechanism of influence of the composition and modes of formation of printed products on their strength characteristics is proposed. The influence of the composition of a composite polymeric material based on PA6 on the quality indicators of product printing has been studied. Methods for controlling the shrinkage parameters of products obtained by layer-by-layer fusion are proposed. The prospects for further scientific research to create materials based on aliphatic polyamides and their composites, as well as the need to study the influence of technological factors in the process of processing polyamide filaments into products by the FDM-printing method, is justified in the conclusion. The obtained results of the study can be used in the development of composites for obtaining a polymer filament to ensure the process of FDM printing of polymer products, including for the needs of mechanical engineering.