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

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)trimethox...

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Bibliographic Details
Published in:Materials 2020-11, Vol.13 (23), p.5418
Main Authors: Kim, Il Jin, Ko, Jae Wang, Song, Min Seop, Cheon, Ji Won, Lee, Dong Jin, Park, Jun Woo, Yu, Seunggun, Lee, Jin Hong
Format: Article
Language:English
Subjects:
Additives
Composite materials
Curing
Epoxy resins
Flame retardants
Flexural strength
Fourier transforms
Fracture toughness
Mechanical properties
Nanocomposites
Nanomaterials
Nanoparticles
Phosphorus
Polymers
Silicon dioxide
Surface treatment
Synthesis
Thermal stability
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Summary: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.
ISSN:1996-1944
1996-1944
DOI:10.3390/ma13235418