Thermal and Flame Retardant Properties of Phosphate-Functionalized Silica/Epoxy Nanocomposites

Autor: Min Seop Song, Il Jin Kim, Dong-Jin Lee, Seunggun Yu, Jin Hong Lee, Ji Won Cheon, Jae Wang Ko, Jun-Woo Park
Jazyk: angličtina
Rok vydání: 2020
Předmět:
Zdroj: Materials
Volume 13
Issue 23
Materials, Vol 13, Iss 5418, p 5418 (2020)
ISSN: 1996-1944
DOI: 10.3390/ma13235418
Popis: We report a flame retardant epoxy nanocomposite reinforced with 9,10-dihydro-9-oxa-10-phosphaphenantrene-10-oxide (DOPO)-tethered SiO2 (DOPO-t-SiO2) hybrid nanoparticles (NPs). The DOPO-t-SiO2 NPs were successfully synthesized through surface treatment of SiO2 NPs with (3-glycidyloxypropyl)trimethoxysilane (GPTMS), followed by a click reaction between GPTMS on SiO2 and DOPO. The epoxy nanocomposites with DOPO-t-SiO2 NPs as multifunctional additive exhibited not only high flexural strength and fracture toughness but also excellent flame retardant properties and thermal stability, compared to those of pristine epoxy and epoxy nanocomposites with a single additive of SiO2 or DOPO, respectively. Our approach allows a facile, yet effective strategy to synthesize a functional hybrid additive for developing flame retardant nanocomposites.
Databáze: OpenAIRE
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