Development of thermoregulating microcapsules with cyclotriphosphazene as a flame retardant agent

3rd International Conference on Innovative Materials, Structures and Technologies

Szczotok, A.M.^1,2 ; Carmona, M.^1 ; Serrano, A.^1 ; Kjøniksen, A.L.^2 ; Rodriguez, J.F.^1

Institute of Chemical and Environmental Technology, University of Castilla-La Mancha, Ciudad Real, Spain^1

Faculty of Engineering, Østfold University College, P.O. Box 700, Halden

1757, Norway^2

关键词: Atmospheric air;    Burning process;    Co-monomer;    Cyclotriphosphazenes;    Flame retardant properties;    Microcapsules;    Thermally stable;   

Others  :  https://iopscience.iop.org/article/10.1088/1757-899X/251/1/012120/pdf
DOI  :  10.1088/1757-899X/251/1/012120

来源: IOP

【 摘 要 】

Thermoregulating microcapsules containing phase change material (Rubitherm®RT27) was produced by using the suspension-like polymerization technique with styrene (St), divinylbenzene (DVB) and hexa(methacryloylethylenedioxy) cyclotriphosphazene (PNC-HEMA) as co-monomers. The effect of PNC-HEMA for improving the flame retardant properties of the microcapsules were analyzed by scanning electron microscopy (SEM), differential scanning calorimetry (DSC), and thermogravimetric analysis (TGA). It was found that the thermal energy storage (TES) capacity of the microcapsules increased in the presence of PNC-HEMA. However, the morphology of the microcapsules became irregular when the content of monomer with flame retardant properties was increased. Thermogravimetric analysis performed under atmospheric air confirmed that the PNC-HEMA raised the amount of residue after the burning process, proving the formation of thermally stable char. Thus, these materials could be considered as an important alternative to commonly used microcapsules containing phase change materials (PCMs), where a lower flammability is required for their application.