Enhancement of mechanical properties of metamaterial absorber based on selective laser sintering and infiltration techniques
发布时间：2020-06-18
点击次数：
影响因子：6.6
DOI码：10.1016/j.coco.2020.100373
所属单位：中南大学
发表刊物：Composites Communications
关键字：Metamaterial absorber Mechanical properties Selective laser sintering Infiltration
摘要：In this study, a 3D printing technology, selective laser sintering (SLS), and infiltration techniques were used to prepare a complex three-dimensional metamaterial absorber with high performance. The raw carbonyl iron (CI) powders were coated by polyamide12 (PA12), where the dissolution-precipitation method was used to improve their uniformity. The coated powders were then printed by SLS. The influence of laser power on the relative density of the composites was studied, where 18W was thought as the optimal laser power. And the SLS samples were infiltrated by thermosetting epoxy resin (EP, E−44) to increase their relative densities and strength. Mechanical tests showed that the infiltrated composites have an ultimate tensile strength of 41.98 MPa, almost 15 times higher than those without infiltration. The final metamaterial absorber (MMA) exhibited the reflection loss below −10 dB in 2.7–18 GHz. The above results indicate that the fabricated processes proposed in this paper have great potential for the preparation of three-dimensional metamaterial absorbers.
第一作者：Y. Wen
论文类型：期刊论文
通讯作者：C. Jiang
学科门类：工学
一级学科：材料科学与工程
文献类型：J
卷号：21
期号：100373
ISSN号：2452-2139
是否译文：否
发表时间：2020-05-26
收录刊物：SCI
发布期刊链接：https://www.sciencedirect.com/journal/composites-communications