Details

Autor(en) / Beteiligte

• Shi, Congling
• Wan, Mei
• Qian, Xiaodong
• Che, Honglei
• Li, Jian

Titel

Synthesis of APP@MOFs integrated hybrids flame retardants for reducing flammability of thermoplastic polyurethanes

Ist Teil von

• Journal of thermal analysis and calorimetry, 2024-04, Vol.149 (7), p.2777-2787

Ort / Verlag

Cham: Springer International Publishing

Erscheinungsjahr

2024

Link zum Volltext

Quelle

SpringerNature Journals

Beschreibungen/Notizen

• In this manuscript, the UiO-66-NH 2 (Zr) (MOFs) was adopted to modify ammonium polyphosphate (APP), and the novel synergistic integrated flame retardant system (APP@MOFs) was formed. The flame retardants were incorporated to the thermoplastic polyurethanes (TPU) matrix, and the effects of APP@MOFs on reducing flammability of thermoplastic polyurethanes were compared and investigated. The results show that the flame retardant and smoke suppression performances of TPU/APP@MOFs composites are improved significantly. The pHRR, THR, SPR, TSP, Y CO , and Y CO2 of TPU/APP@MOFs composites decreased by 75.76%, 86.19%, 69.74%, 86.34%, 57.14%, and 76.37% in comparison with pure TPU. Furthermore, the char residues increased from 0.11 (pure TPU) to 32.3% (TPU/APP@MOFs composites). Generally, the APP@MOFs have great effect on improving the flame retardant and smoke suppression performances of TPU due to the catalytic carbonization and dilution effects of APP, the synergistic and catalysis effects of MOFs. Through the char structure analysis, the mechanism of the TPU/APP@MOFs composites during the combustion processes was also investigated and proposed.