ABSTRACT

Biomass melamine phytates (MEL-PA) flame retardant was fabricated by a facile method, and MEL-PA was used to prepare a series of RPUF/MEL-PA composites by one-step water-blown technology. Compared with that of pure RPUF, the degradation rate of RPUF/MEL-PA composites decreased at a high temperature, and the char residues increased significantly, indicating that the thermal stability of the composites is improved. The smoke density test and TG-FTIR revealed that MEL-PA can significantly inhibit the release of smoke, flammable gases (e.g. esters and hydrocarbons) and toxic and harmful gases (e.g. isocyanate compounds, aromatic compounds and CO), implying significant enhancement of the fire safety of RPUF/MEL-PA composites. SEM, Raman spectra and FTIR spectroscopy were employed to investigate char residues of the composites. MEL-PA was found to catalyse the RPUF matrix to form compact char residues with a high graphitisation degree, significantly inhibiting heat and mass transmission processes during combustion.

摘要

采用简便方法制备了生物质三聚氰胺植酸盐 (MEL-PA) 阻燃剂，并使用 MEL-PA 通过一步水发泡技术制备了一系列 RPUF/MEL-PA 复合材料。与纯RPUF相比，RPUF/MEL-PA复合材料在高温下降解速率降低，残炭量明显增加，表明复合材料的热稳定性得到提高。烟密度测试和TG-FTIR表明，MEL-PA能显着抑制烟气、可燃气体（如酯类和碳氢化合物）和有毒有害气体（如异氰酸酯化合物、芳香族化合物和CO）的释放，显着增强RPUF/MEL-PA 复合材料的防火安全性。SEM、拉曼光谱和 FTIR 光谱用于研究复合材料的焦化残留物。