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New Research: Improvement of Flame Retardancy of Polyurethane Foam Using DOPO-Immobilized Silica Aerogel: In this work, silica aerogel was modified by 9,10-dihydro-9-oxa-10-phosphaphenanthrene-1-oxide (DOPO). Then DOPO-immobilized… https://t.co/Fi8dSu4uku