Fabrication and Characterization of Flame-Retardant Nanoencapsulated n-Octadecane with Melamine–Formaldehyde Shell for Thermal Energy Storage

An innovative reactive phosphorus–nitrogen containing diamine, PNDA, was obtained by dehydration reaction between 9,10-dihydro-9-oxa-10-phosphaphenanthrene-10-oxide (DOPO) and 4,4′-diaminobenzophenone (DABP). Then, flame-retardant nanoencapsulated n-octadecane (NanoC18) with PNDA-modified melamine–formaldehyde (MF) as shell was fabricated via in situ polymerization. n-Octadecane was successfully encapsulated in the PNDA-modified MF polymer shell...