Effects of copper fillers on mechanical and electrical properties of selective laser sintered PA 12-Cu composites
Effects of copper fillers on mechanical and electrical properties of selective laser sintered PA 12-Cu composites
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铜填料对选择性激光烧结 PA 12-Cu 复合材料机械和电性能的影响
DOI：
10.1080/10667857.2021.1964203
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发表时间：
2021
影响因子：
3.1
通讯作者：
M. Bulduk
中科院分区：
文献类型：
--
作者：
Burçin Özbay;A. Bekem;I. E. Serhatlı;S. Öztürk;M. Bulduk
摘要选择性激光烧结（SLS）是一种广泛使用的增材制造（AM）技术，用于通过在层中添加材料来创建3D几何形状。虽然纯聚合物主要以粉末形式用于生产，但可以添加有机或无机填料以通过SLS方法生产聚合物复合材料。在这项研究中，聚酰胺12（PA 12）基复合材料零件填充两种不同的铜颗粒，树枝状和球形，生产，并研究其机械，结构和电气性能。本研究概述了在样品制造过程中，通过增加入射能量密度，机械和电气特性的变化进行了检查。结果进行了分析，在填料类型和能量输入，这被发现有轻微的变化，在SLS组件的弯曲行为。此外，随着能量密度的增加，冲击强度不断增加。此外，尽管球形Cu填充部件的导电性显著上升，但在树枝状Cu填充部件中没有观察到显著变化。
ABSTRACT Selective Laser Sintering (SLS) is a widely used additive manufacturing (AM) technique for creating 3D geometries by adding materials in layers. Although neat polymer is mainly used in powder forms for production, organic or inorganic fillers can be added to produce polymer composites by SLS method. In this study, Polyamide 12 (PA 12) matrix composite parts filled with two different copper particles, dendritic and spherical shaped, were produced, and their mechanical, structural and electrical properties were investigated. The present study outlined that by increasing incident energy densities during sample fabrication, changes in mechanical and electrical characteristics were examined. The findings were analysed in terms of filler type and energy input, which were discovered to have a slight change in the bending behaviour of SLS components. Furthermore, the impact strength was shown to increase constantly with increasing energy density. Furthermore, whereas the electrical conductivity of spherical Cu-filled parts rose considerably, no significant change was seen in dendritic-shaped Cu-filled parts.