Title: Tensile Strength and Failure Modes of Continuous Carbon Nanotube Yarns for Structural Composite Application

Authors: Yourri-Samuel Dessureault, Claire Jolowsky, Samantha Bell, Stefan Spiric, Josiah Molyneux, Dr. Jin Gyu Park, Dr. Ayou Hao and Dr. Zhiyong Liang

DOI: 10.33599/nasampe/s.20.0156

Abstract: Carbon nanotubes (CNT) have shown very attractive mechanical properties. Recently, CNT yarns (CNTy) have become commercially available and are becoming a promising choice for composite structures. To gain a fundamental understanding of CNTy mechanical performance, three variations of CNTy were tested at long gauge lengths (100 – 120 mm). The as-received CNTy demonstrated the highest specific tensile strength (0.911 ± 0.137 N/tex), while the CNTy modified to maximize CNT packing showed the lowest specific tensile strength (0.337 ± 0.217 N/tex). The results were the fit to 2-parameter Weibull distributions with near 0.99 goodness of fit. This revealed that long-range CNT alignment acted as the key contributor to the tensile strength, while defects influenced the failure mode. The distribution analysis at a 95 % confidence interval of the CNTy tensile properties were conducted for potential engineering applications.

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Conference: SAMPE 2020 | Virtual Series

Publication Date: 2020/06/01

SKU: TP20-0000000156

Pages: 12

Price: FREE