埃洛石纳米管改性碳泡沫复合材料的性能研究

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中图分类号：TB332 文献标志码：A DOI：10.13338/j.issn.1006-8341.2025.05.007

Abstract To optimize carbon foam composite properties，this study synthesized Halloysite Nano tubes（HNTs）-modified carbon foams via one-step high-temperature carbonization，using zirconium-modified phenolic resin as precursor，closed-cell hollow microspheres as dispersed phase，and HNTs as reinforcing phase.The effects of HNTs content （0～8% ）on the foam’scompressive properties and high-temperature ablation resistance were systematically studied.Results showed that increasing HNTs content improved the modified foam's mechanical properties.Specifically， the foam with 6% HNTs achieved a compressive strength of 13.4MPa，an81.1% increase over pure carbon foam （7.4MPa） .It was attributed to effective interfacial bonding between dispersed HNTs and the carbon matrix，as well as synergistic reinforcement by HNTs and holow microspheres to inhibit crack propagation.The modified foams also exhibited excellent high-temperature ablation resistance.After 24O s of ablation，in-situ generated surface ceramic phases （e.g. ， SiO2 ）provided a significant thermal barrier effect，delaying thermal oxidative spallation and creatinga temperature difference of over 700∘C between the ablated and back surfaces.The introduction of HNTs with varying contents，improved the mechanical properties and anti-ablation stability of carbon foam composites，providing potential value for the development of aerospace thermal protection materials.

Keywords carbon foam；halloysite nanotubes； compressive property； high-temperatureablation resistance

0 引言

碳泡沫复合材料因具有轻质、高孔隙率、优异的热稳定性及化学惰性，在空天热防护系统材料、能量吸收等领域展现出广阔的应用前景[1-3]。（剩余11172字）