Wang Zhe, Guo Shuaijun, Yu Wenwen, Liang Xiaohong
College of Materials Science & Engineering, Taiyuan University of Technology, Taiyuan 030024, China.
Materials (Basel). 2025 Jun 12;18(12):2753. doi: 10.3390/ma18122753.
Epoxy resins are limited by their flammability and brittleness. In this study, a phosphorus- and silicon-based additive was synthesized to improve fire resistance and mechanical performance. The incorporation of just 1 wt% phosphorus from this additive into epoxy resin achieved a limiting oxygen index of 33% and a V-0 fire rating. The modified epoxy exhibited a 52.43% reduction in the peak heat release rate and a 35.70% decrease in total smoke production compared to the unmodified resin, demonstrating enhanced heat resistance and smoke suppression. Notably, the modified epoxy thermoset displayed superior mechanical properties, with tensile and impact strengths increasing by 48.41% and 130%, respectively. This research presents a promising approach for developing high-performance epoxy resins with improved flame retardancy, smoke suppression, and mechanical strength.
环氧树脂受其易燃性和脆性的限制。在本研究中，合成了一种磷硅基添加剂以提高其耐火性和机械性能。仅将该添加剂中1 wt%的磷掺入环氧树脂中，即可实现33%的极限氧指数和V-0阻燃等级。与未改性树脂相比，改性环氧树脂的热释放速率峰值降低了52.43%，总烟雾生成量减少了35.70%，显示出增强的耐热性和抑烟性。值得注意的是，改性环氧热固性材料表现出优异的机械性能，拉伸强度和冲击强度分别提高了48.41%和130%。本研究提出了一种开发具有改进阻燃性、抑烟性和机械强度的高性能环氧树脂的有前景的方法。
