Polymer-Derived Carbon Matrix Composites with Boron Nitride Nanotube Reinforcement

• DOI: 10.3390/jcs9020083
• Publication Date: 2025-02-12T17:12:16Z
• Authors: Okunzuwa Austine ...; Qiang Wu; Jin Gyu Park; Jizhe Cai; Zhiyong Liang; Zhibin Yu
• Keywords: Matrix (chemical analysis)

This study explored the use of boron nitride nanotubes (BNNTs) as reinforcing fillers to enhance mechanical properties polymer-derived carbon matrix composites. BNNT-reinforced composites containing 0.5–5 wt% BNNTs were fabricated with pyrolysis conducted at different temperatures. X-ray diffraction and Raman spectroscopy revealed enhanced crystallinity reduced defects in BNNT addition. At 1200 °C temperature, sample shrinkage decreased from 28% control without addition 12% 5 BNNTs, demonstrating BNNTs’ significant influence on matrix. The density increased by 20.1% BNNTs. Mechanical testing demonstrated an enhancement failure strain 0.7% 0.8% 87.8% increase work fracture Furthermore, flexural strength modulus improved 68.7% 55.6%, respectively, this concentration. Increasing temperature 1500 further boosted properties, increasing 283.7% 528.6% when comparing samples those reinforcement. Samples processed composition exhibited optimal performance.