Abstract
In this study, a flame retardant [Pollen-type SnO2 (P-SnO2)] with a micro/nanoporous structure was synthesised by the simple immersion–calcination method using pollen as a biological template. When applied into flexible polyvinyl chloride (PVC), PVC composite adding P-SnO2 (PVC/P-SnO2) exhibited much better mechanical property than that adding commercial SnO2 (PVC/[C-type SnO2 (C-SnO2)] for the results that the tensile strength and impact toughness are increased by 11.3 and 37.9%, respectively. Moreover, PVC/P-SnO2 has always the same flame retardancy and smoke suppression abilities compared with PVC/C-SnO2. It provides a method using biotemplate for preparing metal oxide flame retardants with both great flame retardant and toughening properties.
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