Flame retardant behavior of multi-scale layered PBT/IFR composites

• DOI: 10.1016/j.polymertesting.2023.107968
• Publication Date: 2023-02-17T16:25:16Z
• Authors: Jianbin Li; Yueling Chen; Jie Sun; Sheng Zhang; Jingbiao Ye; Ying Jin; Zhengqiu Li; Baoshu Chen
• Keywords: Intumescent; Polybutylene terephthalate; Limiting oxygen index; Charring; Zinc borate

This study first prepared a layered intumescent flame retardant (IFR)-graphene oxide (GO). Then, the multi-scale polybutylene terephthalate (PBT) composites were by introducing glass fiber (GF), boron nitride (BN), and nano SiO2 synergists of different shapes sizes. The results showed that SiO2-containing displayed excellent resistance with grade V-0 limiting oxygen index (LOI) 32%. IFR-GO, PBT, formed network structure where three additives interacted via hydrogen bonding, catalyzing charring in situ. Finally, obtained an droplet properties.