Fabrication and Performance Investigation of Flame Retardant Flexible Polyurethane Composites via Polyethyleneimine/Phytic Acid LBL Self‐Assembly Coatings DOI Open Access
Mengfan Guan, Jiaqi Li, Yuan Fang

и другие.

Journal of Applied Polymer Science, Год журнала: 2024, Номер unknown

Опубликована: Ноя. 25, 2024

ABSTRACT To bolster the fire resistance of flexible polyurethane foam (FPUF), and a series FPUF/polyethylenimine/phytic acid (FPUF/PEI/PA) composites were prepared by layer‐by‐layer self‐assembly strategy. Furthermore, thermal stability, flame retardancy, combustion properties, char layer comprehensively evaluated via thermogravimetric analysis (TGA), limiting oxygen index (LOI), UL‐94 vertical test, microcalorimetry (MCC), scanning electron microscopy (SEM), Raman spectroscopy, tensile testing. TG revealed that PEI/PA coatings markedly diminished initial decomposition temperature ( T ‐5wt% ) residue at 800°C. FPUF‐6 extended burning duration 20 s, 80% improvement compared with unmodified FPUF, an LOI value increased to 19.2 vol%. SEM analyses residues indicated coating promoted graphitization degree layer. This work offered novel insights for development high‐performance FPUF composites.

Язык: Английский

Fabrication and Performance Investigation of Flame Retardant Flexible Polyurethane Composites via Polyethyleneimine/Phytic Acid LBL Self‐Assembly Coatings DOI Open Access
Mengfan Guan, Jiaqi Li, Yuan Fang

и другие.

Journal of Applied Polymer Science, Год журнала: 2024, Номер unknown

Опубликована: Ноя. 25, 2024

ABSTRACT To bolster the fire resistance of flexible polyurethane foam (FPUF), and a series FPUF/polyethylenimine/phytic acid (FPUF/PEI/PA) composites were prepared by layer‐by‐layer self‐assembly strategy. Furthermore, thermal stability, flame retardancy, combustion properties, char layer comprehensively evaluated via thermogravimetric analysis (TGA), limiting oxygen index (LOI), UL‐94 vertical test, microcalorimetry (MCC), scanning electron microscopy (SEM), Raman spectroscopy, tensile testing. TG revealed that PEI/PA coatings markedly diminished initial decomposition temperature ( T ‐5wt% ) residue at 800°C. FPUF‐6 extended burning duration 20 s, 80% improvement compared with unmodified FPUF, an LOI value increased to 19.2 vol%. SEM analyses residues indicated coating promoted graphitization degree layer. This work offered novel insights for development high‐performance FPUF composites.

Язык: Английский

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