The Study of Physico-Mechanical Properties of Polylactide Composites with Different Level of Infill Produced by the FDM Method.

Anna Gaweł,Stanisław Kuciel

doi:10.3390/polym12123056

Abstract

The aim of this study was to evaluate the changes in physical-mechanical properties of the samples manufactured by 3D printing technology with the addition of varying degrees of polylactide (PLA) infill (50, 70, 85 and 100%). Half of the samples were soaked in physiological saline. The material used for the study was neat PLA, which was examined in terms of hydrolytic degradation, crystallization, mechanical strength, variability of properties at elevated temperatures, and dissipation of mechanical energy depending on the performed treatment. A significant impact of the amount of infill on changeable mechanical properties, such as hydrolytic degradation and crystallization was observed. The FDM printing method allows for waste–free production of light weight unit products with constant specyfic strength.

Highlights

Three-dimensional (3D) printing, commonly known as additive manufacturing, has recently become a very popular way for rapid manufacturing of various objects in applied chemistry, biomedicine, material science and many other branches of research and industry [1]
The results showed that, depending on the additives, crystallization temperature might be lowered and crystallization time might be reduced by half, which is very important for the rapid production of highly crystallized PLA materials [10,31]
The aim of this study was to evaluate changes in physical-mechanical properties of the samples manufactured by 3D printing technology using PLA that is subsequently subjected to crystallization

Summary

Introduction

Three-dimensional (3D) printing, commonly known as additive manufacturing, has recently become a very popular way for rapid manufacturing of various objects in applied chemistry, biomedicine, material science and many other branches of research and industry [1]. This technique enables the manufacture of various functional components or prototypes, even those with complex geometry. FDM is a quite simple and inexpensive method of producing 3D objects with relatively high resolution In this case, the geometry of the object is formed by extruding a thermoplastic filament. The quality of the final product depends on various parameters, such as the thickness of the layer, the air gap, the orientation of the structure, the density of the material and others, for example, the operator's experience [2,3]

Objectives

Results

Conclusion