Trubachev Stanislav, Paletsky Alexander, Sosnin Egor, Tuzhikov Oleg, Buravov Boris, Shmakov Andrey, Chernov Anatoliy, Kulikov Ilya, Sagitov Albert, Hu Yuan, Wang Xin
Voevodsky Institute of Chemical Kinetics and Combustion, 630090 Novosibirsk, Russia.
Department of Physics, Novosibirsk State University, 630090 Novosibirsk, Russia.
Polymers (Basel). 2024 Aug 18;16(16):2333. doi: 10.3390/polym16162333.
This paper presents a study of the flammability and thermal decomposition products of glass fiber-reinforced epoxy resin (GFRER) with the addition of cardanol-based phosphorus-containing benzoxazine monomer (CBz) and graphene and their combinations in different proportions (up to 20 wt.%). The addition of CBz alone or in combination with graphene resulted in an increase in the limiting oxygen index (LOI) and self-extinguishing in the UL-94 HB test. The flame-retardant samples had better tensile mechanical properties than the sample without additives. The differential mass-spectrometric thermal analysis (DMSTA) of the thermal decomposition products of GFRER without additives and with the addition of CBz and graphene was carried out. CBz addition promoted the thermal decomposition of high-molecular-weight products of epoxy resin decomposition in the condensed phase and at the same time decreased the time of release of low-molecular-weight thermal decomposition products into the gas phase. Graphene addition resulted in an increase in the relative intensities of high-molecular-mass peaks compared to GFRER without additives.
本文研究了添加腰果酚基含磷苯并恶嗪单体（CBz）和石墨烯及其不同比例组合（最高20 wt.%）的玻璃纤维增强环氧树脂（GFRER）的燃烧性能和热分解产物。单独添加CBz或与石墨烯组合添加均导致极限氧指数（LOI）增加，并在UL - 94 HB测试中实现自熄。阻燃样品的拉伸力学性能优于无添加剂的样品。对未添加添加剂以及添加了CBz和石墨烯的GFRER的热分解产物进行了差示质谱热分析（DMSTA）。添加CBz促进了环氧树脂在凝聚相分解的高分子量产物的热分解，同时减少了低分子量热分解产物释放到气相中的时间。与未添加添加剂的GFRER相比，添加石墨烯导致高分子质量峰的相对强度增加。
