阻燃剂
极限氧指数
炭化
材料科学
烧焦
可燃性
乙烯
复合材料
烟雾
聚对苯二甲酸乙二醇酯
热稳定性
聚合物
聚乙烯
化学工程
热解
高分子化学
有机化学
化学
催化作用
工程类
作者
Zhenhui Bai,ZhengQi Wang,Jie Jia,Dequn Wu,Xueli Wang,Jianyong Yu,Ruchao Yuan,Faxue Li
出处
期刊:Polymer
[Elsevier]
日期:2023-07-18
卷期号:283: 126194-126194
被引量:4
标识
DOI:10.1016/j.polymer.2023.126194
摘要
The charring enhancement of polymers at high temperatures is essential for improving their anti-dripping, flame inhibition and smoke suppression performance. In this work, a highly thermostable and charring phosphorus-nitrogen (P/N)-based flame retardant (HMCP), which can boost the char-forming of poly(ethylene terephthalate) (PET) was synthesized. Amazingly, melt-dripping of PET was completely suppressed as 4 wt% of HMCP was added. For PET composite with 8 wt% of HMCP (PET/HMCP8), its limiting oxygen index increased to 33.6% and the flame self-extinguished within 5 s. Besides, the after-flame time and total smoke production of PET/HMCP8 were reduced by 96.1% and 39.5% respectively compared with pure PET. The enhanced fire safety of PET/HMCP composites was attributed to the barrier effect and the dilution effect produced by the synergism of P/N-based heterocycle and benzimidazole groups. Additionally, PET fabric woven with the filaments prepared by the melt spinning of PET/HBCP4 presented pleasing fire safety and mechanical properties.
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