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Influence of Magnesium Aluminate Nanoparticles on Epoxy-Based Intumescent Flame Retardation Coating System.
- Source :
- Coatings (2079-6412); Oct2020, Vol. 10 Issue 10, p968-968, 1p
- Publication Year :
- 2020
-
Abstract
- Ethylenediamine modified ammonium polyphosphate (EDA-MAPP) and charring-foaming agents (CFA) were prepared using a simple chemical method and further used to make intumescent flame retardant coatings based on epoxy resin. The content of MAPP and CFA was fixed at a ratio of 2:1. Nanoparticles of magnesium aluminate (MgAl<subscript>2</subscript>O<subscript>4</subscript> NPs) have been introduced into the flame retardant coating formulation in various quantities to evaluate the promotional action of MgAl<subscript>2</subscript>O<subscript>4</subscript> NPs with a flame retardant coating system. The promotional action of MgAl<subscript>2</subscript>O<subscript>4</subscript> NPs on the flame retardant coating formulation was studied using a vertical burning test (UL-94V), limiting oxygen index (LOI), thermogravimetric analysis (TGA) and Fourier transform infra-red spectroscopy (FTIR). The UL-94V results indicated that the addition of MgAl<subscript>2</subscript>O<subscript>4</subscript> effectively increased flame retardancy and met the V-0 rating at each concentration. The TGA results revealed that the incorporation of MgAl<subscript>2</subscript>O<subscript>4</subscript> NPs at each concentration effectively increased the thermal stability of the flame retardant coating system. Cone-calorimeter experiments show that MgAl<subscript>2</subscript>O<subscript>4</subscript> NPs effectively decreased peak heat release rate (PHRR) and total heat release (THR). The FTIR results indicated that MgAl<subscript>2</subscript>O<subscript>4</subscript> NPs can react with MAPP and generate a dense char layer that prevents the transfer of oxygen and heat. [ABSTRACT FROM AUTHOR]
Details
- Language :
- English
- ISSN :
- 20796412
- Volume :
- 10
- Issue :
- 10
- Database :
- Complementary Index
- Journal :
- Coatings (2079-6412)
- Publication Type :
- Academic Journal
- Accession number :
- 146669107
- Full Text :
- https://doi.org/10.3390/coatings10100968