Synthesis and application in polypropylene of a novel of phosphorus-containing intumescent flame retardant

• Published in: Molecules (Basel, Switzerland) Vol. 15; no. 11; pp. 7593 - 7602
• Main Authors: Zuo, Jian-Dong, Liu, Shu-Mei, Sheng, Qi
• Format: Journal Article
• Language: English
• Published: Switzerland MDPI AG 28.10.2010; MDPI
• Subjects: Acids; Carbon; Chlorine; Flame retardants; Flame Retardants - chemical synthesis; intumescent flame retardant; Magnetic Resonance Spectroscopy; Materials science; Mechanical properties; Molecular Structure; Nitrogen; phosphate-containing; Phosphorus; Phosphorus - chemistry; Polypropylenes - chemistry; Spectroscopy, Fourier Transform Infrared; triazine oligomer PMPT; Triazines - chemical synthesis; Triazines - chemistry; China
• ISSN: 1420-3049; 1420-3049
• DOI: 10.3390/molecules15117593

A novel phosphorus-containing triazine oligomer poly(2-morpholinyl-4-penta-erythritol phosphate-1,3,5-triazine) (PMPT) was synthesized as a kind of tri-component intumescent flame retardant (IFR). The chemical structure of PMPT was characterized by FTIR, 1H-NMR and 31P-NMR, and the mechanical and flammability properties of FR-PP were measured. The FTIR results showed that the expected chemical reactions had  happened at each step. The 1H-NMR and 31P-NMR spectra also agreed with the chemical structure of PMPT. The slight effect of PMPT on the mechanical properties of FR-PP suggested that PMPT and PP are compatible. The high limited oxygen index (LOI) values of FR-PP revealed that PMPT was an efficient IFR and there was the synergistic effect between PMPT and ammonium polyphosphate/ pentaerythritol (APP/PER).