Rigid polyurethane foams (RPUFs) are widely used in many fields, but they are easy to burn and produce a lot of smoke, which seriously endangers the safety of people’s lives and property. In this study, tetraethyl(1,5–bis(bis(2–hydroxypropyl)amino)pentane–1,5–diyl)bis(phosphonate) (TBPBP), as a phosphorus–nitrogen–containing reactive–type flame retardant, was successfully synthesized and employed to enhance the flame retardancy of RPUFs, and silica aerogel (SA) powder was utilized to reduce harmful fumes. Castor oil–based rigid polyurethane foam containing SA powder and TBPBP was named RPUF– Compared with neat RPUF, the obtained RPUF–[email protected] greatly improved with the compressive strength properties and the LOI value increased by 93.64% and 44.27%, respectively, and reached the V–0 rank of UL–94 testing. The total heat release (THR) and total smoke production (TSP) of RPUF–[email protected] were, respectively, reduced by 44.66% and 51.89% compared to those of the neat RPUF. A possible flame–retardant mechanism of RPUF–[email protected] was also proposed. This study suggested that RPUF incorporated with TBPBP and SA powder is a prosperous potential composite for fire and smoke safety as a building insulation material. View Full-Text

中文翻译：

---

通过添加含P@N的反应型阻燃剂并混合二氧化硅气凝胶粉末来提高生物基硬质聚氨酯泡沫的防火安全和烟雾安全


硬质聚氨酯泡沫塑料（RPUF）广泛应用于多个领域，但其易燃烧并产生大量烟雾，严重危害人民生命财产安全。在本研究中，四乙基（1,5-双（双（2-羟丙基）氨基）戊烷-1,5-二基）双（膦酸酯）（TBPBP）作为一种含磷氮反应型阻燃剂，成功合成并用于增强 RPUF 的阻燃性，并利用二氧化硅气凝胶（SA）粉末来减少有害烟雾。将含有SA粉和TBPBP的蓖麻油基硬质聚氨酯泡沫命名为RPUF——与纯RPUF相比，所得RPUF——[email protected]的抗压强度性能大大提高，LOI值分别提高了93.64%和44.27%，并达到 UL-94 测试的 V-0 等级。与纯 RPUF 相比，RPUF-[email protected] 的总放热量 (THR) 和总产烟量 (TSP) 分别减少了 44.66% 和 51.89%。还提出了 RPUF 的一种可能的阻燃机制——[email protected]。这项研究表明，与 TBPBP 和 SA 粉末混合的 RPUF 是一种作为建筑隔热材料在防火和防烟安全方面具有广阔前景的复合材料。查看全文