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http://dx.doi.org/10.7234/composres.2013.26.5.309

Microstructure and Ablation Performance of CNT-phenolic Nanocomposites  

Wang, Zuo-Jia (경상대학교 나노.신소재공학부 대학원)
Kwon, Dong-Jun (경상대학교 나노신소재융합공학부 대학원)
Park, Jong-Kyoo (국방과학연구소 제 4연구개발본부)
Lee, Woo-Il (서울대학교 기계.항공공학부)
Park, Joung-Man (경상대학교 나노.신소재공학부, 나노신소재융합공학과 공학연구원)
Publication Information
Composites Research / v.26, no.5, 2013 , pp. 309-314 More about this Journal
Abstract
Highly ablation resistant carbon nanotube (CNT)-phenolic composites were fabricated by the addition of low concentrations of CNT nanofiller. Tensile and compressive properties as well as ablative resistance were significantly improved by the addition of only 0.1 and 0.3 wt% of uniformly dispersed CNTs. An oxygen-kerosene-flame torch and a field emission scanning electron microscope (FE-SEM) were used to evaluate the ablative properties and microstructures of these CNT-phenolic composites. Thermal gravimetric analysis (TGA) revealed that the ablation rate was lower for the 0.3 wt% CNT-phenolic composites than for neat phenolic or the composite with 0.1 wt% CNT. Ablative mechanisms for all three materials were investigated using this TGA in conjunction with microstructural studies using a FE-SEM. The microstructural studies revealed that CNT acted as an ablation resistant phase at high temperatures, and that the uniformity of dispersion of the CNT played an important role in this resistance to ablation.
Keywords
ablation performance; nanocomposites; microstructure; dispersion;
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Times Cited By KSCI : 1  (Citation Analysis)
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