Obtaining Graphite-Modified Polymer Composite Material for Implementation in the Additives Production

Abstract

The article presents results of analyzing a possibility to obtain a composite material based on the polylactide matrix with addition of the coarse graphite powder particles having characteristic size of no more than 150 μm by extruding a polymer rod with the diameter of 1.75 mm. Subsequently, it is introduced as a filament in the 3D printing using the layer-by-layer fusion deposition method (layer-by-layer fusion deposition modeling). The polymer material initial granules were mechanically mixed with the modifier particles in a special mixing container. Carbon content in the resulting composite material was 25 % (mass). The scanning electron microscopy was used to obtain an image of the initial powder material, and tensile testing was introduced to assess the mechanical properties. The filament was obtained using the Wellzoom Type B extruder with an automatic device for winding the polymer filament. The paper presents the extrusion process parameters used to obtain a polymer rod from the polylactide granules and a composite material modified with graphite particles. It was found that the material contained carbon additives changing the polymer composite physical and mechanical properties. Based on results of the rods tensile testing, strength characteristics and relative elongation were determined

Please cite this article in English as:

Shinkaryov A.S., Gorbatyuk S.M., Karfidov A.O., et al. Obtaining graphite-modified polymer composite material for implementation in the additives production. Herald of the Bauman Moscow State Technical University, Series Natural Sciences, 2024, no. 5 (116), pp. 97--109 (in Russ.). EDN: ISOVMI

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