当前位置: X-MOL 学术J. Mater. Sci. › 论文详情
Our official English website, www.x-mol.net, welcomes your feedback! (Note: you will need to create a separate account there.)
Development of polyetherimide composites for use as 3D printed thermal protection material
Journal of Materials Science ( IF 4.5 ) Pub Date : 2020-04-23 , DOI: 10.1007/s10853-020-04676-6
Steven Kim , Hao Wu , Alexa Devega , Mallory Sico , William Fahy , John Misasi , Tarik Dickens , Joseph H. Koo

As additive manufacturing (AM) increasingly gains commercial and academic interest, government agencies, such as NASA Johnson Space Center, seek to produce thermal protection systems using AM methods, such as fused filament fabrication (FFF). The purpose of this study is to develop a suitable polyetherimide (ULTEM™ 1010) nanocomposite with enhanced ablation and thermal properties while maintaining compatibility with commercially available FFF machines. Eleven formulations were compounded using the twin-screw extruder with varying amounts of nanoclay, glass bubbles, and flame-retardant additives. All formulations were characterized via multiple instruments to be down-selected to four candidates for aerothermal testing. After discovering specific characteristics of some formulations, aerothermal test models were 3D printed for four formulations. Enhanced thermal properties among the composite formulations were demonstrated. Aerothermal testing also displayed promising results. In addition to experimental data, microstructural analyses were performed.

中文翻译:

开发用作 3D 打印热保护材料的聚醚酰亚胺复合材料

随着增材制造 (AM) 越来越受到商业和学术兴趣,美国宇航局约翰逊航天中心等政府机构寻求使用增材制造方法生产热保护系统,例如熔丝制造 (FFF)。本研究的目的是开发一种合适的聚醚酰亚胺 (ULTEM™ 1010) 纳米复合材料,该复合材料具有增强的烧蚀和热性能,同时保持与市售 FFF 机器的兼容性。使用双螺杆挤出机将 11 种配方与不同量的纳米粘土、玻璃泡和阻燃添加剂混合。所有配方都通过多种仪器进行表征,以筛选出四种候选气体进行空气热测试。在发现某些配方的特定特性后,对四种配方进行了气热测试模型的 3D 打印。证明了复合材料配方之间增强的热性能。空气热测试也显示出有希望的结果。除了实验数据外,还进行了微观结构分析。
更新日期:2020-04-23
down
wechat
bug