Abstract
Although direct deposition of polymeric materials onto textiles through 3D printing is a great technique used more and more to develop smart textiles, one of the main challenges is to demonstrate equal or better mechanical resistance, durability and comfort than those of the textile substrates before deposition process. This article focuses on studying the impact of the textile properties and printing platform temperature on the tensile and deformations of non-conductive and conductive poly lactic acid (PLA) filaments deposited onto polyethylene terephthalate (PET) textiles through 3D printing process and optimizing them using theoretical and statistical models. The results demonstrate that the deposition process affects the tensile properties of the printed textile in comparison with the ones of the textiles. The stress and strain at rupture of the first 3D printed PLA layer deposited onto PET textile material reveal to be a combination of those of the printed layer and the PET fabric due to the lower flexibility and diffusion of the polymeric printed track through the textile fabric leading to a weak adhesion at the polymer/textile interface. Besides, printing platform temperature and textile properties influence the tensile and deformation properties of the 3D printed PLA on PET textile significantly. Both, the washing process and the incorporation of conductive fillers into the PLA do not affect the tensile properties of the extruded polymeric materials. The elastic, total and permanent deformations of the 3D-printed PLA on PET fabrics are lower than the ones of the fabric before polymer deposition which demonstrates a better dimensional stability, higher stiffness and lower flexibility of these materials.
Highlights
Researchers demonstrated that the mechanical properties of parts produced through Additive Manufacturing (AM) technique were mainly impacted by both the manufacturing process parameters and the physicochemical material properties before printing[6]
The effect of the textiles’ properties and build platform temperature on the tensile and deformation of deposited virgin or conductive poly lactic acid (PLA) printed onto polyethylene terephthalate (PET) woven fabrics (3D-PPOT materials) were investigated
When analyzing the overall tensile properties of 3D-PPOT materials, it was found that the ranges of stress and strain at rupture were approximately three times lower for the non-conductive and the conductive PLA track compared to those of the PET fabric due to the low flexibility of the printed track and weak adhesion to the textile substrate
Summary
Researchers demonstrated that the mechanical properties of parts produced through Additive Manufacturing (AM) technique were mainly impacted by both the manufacturing process parameters and the physicochemical material properties before printing[6]. This article focuses on studying the impact of the fabric’s properties and printing platform temperature on the stress, strain (SS-EN-ISO 13934- 1:2013) and deformations (using Universal Surface Tester (UST)) of non- conductive and conductive poly lactic acid (PLA) filaments (PLA + 2.5 wt%CB) deposited onto polyethylene terephthalate (PET) textiles through 3D printing process and optimizing them through theoretical and statistical models. In the case of use of conductive polymers, the appellation “3D-PPOT conductive materials” is preferred
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