Enhancing 3D-Printed PP-CF parts: A novel resin-filling technique for mechanical property optimization
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Date
2025
Journal Title
Journal ISSN
Volume Title
Publisher
Sage Publications Ltd
Access Rights
info:eu-repo/semantics/closedAccess
Abstract
This study investigates a novel post-processing technique aimed at enhancing the mechanical properties of 3D-printed polypropylene-carbon fiber (PP-CF) composite parts. The method involves printing components with internal voids to reduce weight and printing time, subsequently filling these voids with a low-cost resin known for its superior mechanical properties. Through systematic experimentation varying infill density and pattern, key quantitative findings were obtained. Tensile strength generally increased with higher infill density, reaching a maximum of 55.664 MPa for the resin-filled triangle infill pattern with 60% infill density. Impact energy showed a decreasing trend with increasing infill density, with the highest impact energy of 0.5 J recorded for the resin-filled triangle infill pattern with 60% infill density. Microstructural analysis revealed that the triangle infill pattern at 60% infill density exhibited the most effective resin penetration, contributing to superior mechanical performance. These findings emphasize the importance of infill pattern selection in resin distribution and mechanical enhancement in 3D-printed composite materials.
Description
Keywords
3D printing, polypropylene-carbon fiber composite, infill pattern, resin-filling technique, post-processing
Journal or Series
Journal of Thermoplastic Composite Materials
WoS Q Value
Q2
Scopus Q Value
Q1
Volume
38
Issue
3
