Mechanical property and thermal stability of polyurethane composites reinforced with polyhedral oligomeric silsesquioxanes and inorganic flame retardant filler.
Mechanical properties and thermal stability of polyurethane composites were investigated with a combination of polyhedral oligomeric silsesquioxane (POSS) molecules and inorganic barium sulfate. These hybrid composites were prepared using one-step method through the incorporation of flexible hydroxyl-terminated polybutadiene prepolymer, reactive POSS nanoparticles, and barium sulfate under isophorone diisocyanate curative system. In polyurethane composites, POSS and inorganic barium sulfate were utilized for mechanical reinforcement and flame retardant filler, respectively. The decomposition of POSS molecules during oxyacetylene torch exposure resulted in the formation of silica-based nanosized droplets, contributing on ablation behavior.
Ho-Joong
HJ
Kim
Younghwan
Y
Kwon
Chang Kee
CK
Kim
D005411:Flame Retardants / Q000032:analysis*; D011140:Polyurethanes / Q000737:chemistry*; D013818:Thermogravimetry
D005411:Flame Retardants; D011140:Polyurethanes