Smoke-suppression Mechanism of Ferrocene-based Polymer Composites: From Vapor Phase to Combination of Vapor and Condensed Phase
Aiming to exploit the origin of vapor-phase smoke-suppression mechanism of ferrocene in noncharring polystyrene (PS), 3wt% ferrocene was incorporated into PS and gave rise to 56.9% reduction in total smoke production (TSP).The insightful vapor-phase mechanism investigation illustrated that smoke intermediate (soot) of PS/3Ferroeene possessed remarkable γ-Fe2O3 nanoparticles relative to that of virgin PS, which promoted the significant thermal-oxidation degradation and burned enormous soot at the combustion temperature (ca.550℃).Furthermore, driven by the drawback of low sublimation temperature (ca.100℃), the ferrocene molecule was included into the nanocarrier of sulfonated cyclodextrin intercalated layered double hydroxide (LDH-CD) via host-guest chemistry.As a result, the sublimation of ferrocene was effectively shifted to the combustion temperature of charring epoxy resin (EP).6wt% LDH-CD@Ferr endowed EP with a reduced TSP by 54.4%, notably higher than 26.5% of LDH-CD.The combined vapor and condensed-phase mechanism were analyzed.The vapor-phase mechanism was involved in the promoted combustion degradation of soot.The condensed mechanism was about the formation of higher-quality protective carbonaceous layer via the catalytic charring.
Zhi Li De-Yi Wang
IMDEA Materials Insitute, C/Eric Kandel, 2, 28906 Getafe, Madrid, Spain;Universidad Politécnica de M IMDEA Materials Insitute, C/Eric Kandel, 2, 28906 Getafe, Madrid, Spain
国际会议
杭州
英文
63-64
2018-06-14（万方平台首次上网日期，不代表论文的发表时间）