Effect of CNT content and size on the high-temperature particle-erosion resistance of ablative materials for thermal protection systems

被引：10
|
作者：
Guo, MengFei [1 ]
Du, JinFu [1 ]
Zhang, YanChao [1 ]
机构：
[1] Xian Univ Technol, Sch Mech & Precis Instrument Engn, Xian 710048, Peoples R China
来源：
COMPOSITES SCIENCE AND TECHNOLOGY | 2023年 / 235卷
基金：
中国博士后科学基金; 中国国家自然科学基金;
关键词：
Polymer-matrix composite (PMC); Carbon nanotubes (CNTs); Thermal protection system (TPS); Particle erosion; High temperature; CARBON NANOTUBES; COMPOSITES;
D O I：
10.1016/j.compscitech.2023.109969
中图分类号：
TB33 [复合材料];
学科分类号：
摘要：
Advanced spacecraft development requires high-performance thermal protection systems composed of materials with high particle-erosion resistance. In this study, a particle-erosion test motor was designed to produce a high-temperature particle jet. Subsequently, the effects of carbon nanotube (CNT) content and size on the particle-erosion resistance of ethylene propylene diene monomer (EPDM) composites were analyzed. Composites with an optimum CNT content exhibited the lowest ablation rates; extremely high or low CNT contents increased the ablation rate. Furthermore, the charring rate of the composites with long CNTs were 78.0% and 43.6% lower than those with the baseline-formula composition and those containing conventional CNTs, respectively. Here, the influence of CNT content and size on the particle-erosion resistance of EPDM composites was analyzed from the perspective of the thermal stability of the composites, as well as the char-layer characteristics and vapor deposition.
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页数：7
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