当前位置: X-MOL 学术Nat. Mater. › 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.)
Dimensionally and environmentally ultra-stable polymer composites reinforced with carbon fibres.
Nature Materials ( IF 37.2 ) Pub Date : 2019-12-23 , DOI: 10.1038/s41563-019-0565-3
J V Anguita 1 , C T G Smith 1 , T Stute 2 , M Funke 2 , M Delkowski 1, 2 , S R P Silva 1
Affiliation  

The quest to develop materials that enable the manufacture of dimensionally ultra-stable structures for critical-dimension components in spacecraft has led to much research over many decades and the evolution of carbon fibre reinforced polymer materials. This has resulted in structural designs that feature a near-zero coefficient of thermal expansion. However, the dimensional instabilities that result from moisture ingression and release remain the fundamental vulnerability of the matrix, which restricts many applications. Here, we address this challenge by developing a space-qualifiable physical surface barrier that blends within the mechanical properties of the composite, thus becoming part of the composite itself. The resulting enhanced composite features mechanical integrity and a strength that is superior to the underlying composite, while remaining impervious to moisture and outgassing. We demonstrate production capability for a model-sized component for the Sentinel-5 mission and demonstrate such capability for future European Space Agency (ESA) and National Aeronautics and Space Administration (NASA) programmes such as Copernicus Extension, Earth Explorer and Science Cosmic Visions.

中文翻译:

碳纤维增强的尺寸和环境超稳定聚合物复合材料。

对开发能够制造用于航天器中关键尺寸部件的尺寸超稳定结构的材料的追求,导致了数十年的大量研究,并导致了碳纤维增强聚合物材料的发展。这导致结构设计具有接近零的热膨胀系数。然而,由于水分进入和释放而引起的尺寸不稳定性仍然是基体的基本脆弱性,这限制了许多应用。在这里,我们通过开发一种可在空间上合格的物理表面屏障来应对这一挑战,该屏障可在复合材料的机械性能内融合,从而成为复合材料本身的一部分。所得的增强复合材料具有机械完整性和强度,该强度优于基础复合材料,同时保持不透湿气和脱气性。我们演示了Sentinel-5任务的模型尺寸组件的生产能力,并为未来的欧洲航天局(ESA)和国家航空航天局(NASA)计划(如哥白尼扩展,地球探索者和科学宇宙视觉)展示了这种能力。
更新日期:2019-12-23
down
wechat
bug