TY - CONF
T1 - Comparative study of filled and unfilled polylactic acid produced via injection molding and 3d printing
AU - Savandaiah, Chethan
AU - Plank, Bernhard
AU - Maurer, Julia
AU - Lesslhumer, Juergen
AU - Steinbichler, Georg
N1 - Funding Information:
This research work has been performed as part of the “3D-CFRP” and “Pore3D” (project number: 868735) and “BeyondInspection” (project number: 874540) projects. The authors acknowledge the financial support by the EU funded network M-Era.Net, the BMVIT (Austrian Ministry for Transport, Innovation, and Technology), the FFG (Austrian Research Promotion Agency), the state government of Upper Austria, as well as the RCL (Research Council of Lithuania) and FASIE (Foundation for Assistance to Small Innovative Enterprises, Russia).
Publisher Copyright:
© 2021 Society of Plastics Engineers. All rights reserved.
PY - 2021
Y1 - 2021
N2 - This study investigates the impact of two different processing methods, Injection molding (IM) and 3D printing (3Dp), on neat/unfilled polylactic acid (NPLA) and the short carbon fibers (SCFs) filled polylactic acid (SPLA). Furthermore, the resulting processing conditions and the influence on mechanical properties, such as tensile, flexural, notched Charpy impact test, and heat deflection temperature (HDT), along with the process-induced effects, such as fiber length distribution and voids, were studied. The process-induced voids were evident in all the computed tomography (CT) scans, 3Dp specimens have higher void volume fraction compared to no visible voids in IM specimens. Similarly, the mechanical test results such as tensile, flexural and notched Charpy impact test follow the trend for 3Dp SPLA and IM SPLA. On the contrary, 3Dp 0° and ±45° NPLA tensile test results are comparable to IM NPLA, whereas 3Dp 0° NPLA has the highest impact resistance compared to injection molded NPLA and SPLA as well as 3Dp SPLA specimens, indicating the annealing effect induced by the heated 3D printing bed along with increased void volume fraction. Furthermore, the HDT study indicates the maximum serviceable temperature of both NPLA and SPLA remained comparable regardless of the processing method. Moreover, the change in fiber length distribution for SPLA injection molded and extruded filament specimens were negligible.
AB - This study investigates the impact of two different processing methods, Injection molding (IM) and 3D printing (3Dp), on neat/unfilled polylactic acid (NPLA) and the short carbon fibers (SCFs) filled polylactic acid (SPLA). Furthermore, the resulting processing conditions and the influence on mechanical properties, such as tensile, flexural, notched Charpy impact test, and heat deflection temperature (HDT), along with the process-induced effects, such as fiber length distribution and voids, were studied. The process-induced voids were evident in all the computed tomography (CT) scans, 3Dp specimens have higher void volume fraction compared to no visible voids in IM specimens. Similarly, the mechanical test results such as tensile, flexural and notched Charpy impact test follow the trend for 3Dp SPLA and IM SPLA. On the contrary, 3Dp 0° and ±45° NPLA tensile test results are comparable to IM NPLA, whereas 3Dp 0° NPLA has the highest impact resistance compared to injection molded NPLA and SPLA as well as 3Dp SPLA specimens, indicating the annealing effect induced by the heated 3D printing bed along with increased void volume fraction. Furthermore, the HDT study indicates the maximum serviceable temperature of both NPLA and SPLA remained comparable regardless of the processing method. Moreover, the change in fiber length distribution for SPLA injection molded and extruded filament specimens were negligible.
UR - http://www.scopus.com/inward/record.url?scp=85111570580&partnerID=8YFLogxK
M3 - Paper
AN - SCOPUS:85111570580
T2 - 2021 SPE Annual Technical Conference, ANTEC 2021
Y2 - 10 May 2021 through 21 May 2021
ER -