RT info:eu-repo/semantics/article
T1 Cooperative effect of chemical and physical processes for flame retardant additives in recycled ABS
A1 Rodriguez, Alicia
A1 Herrero Villar, Manuel
A1 Asensio Valentín, María
A1 Santiago Calvo, Mercerdes
A1 Guerrero, Julia
A1 Cañibano Álvarez, Esteban
A1 Fernández, Maria Teresa
A1 Nuñez, Karina
K1 Plastics
K1 Polimers
K1 Polimeros y polimerizacion
K1 Recycled products
K1 Residuos plásticos - Reciclado
K1 Materias plásticas
K1 Fireproofing agents
K1 Fuego
K1 Fire
K1 Mechanical properties
K1 Chemistry
K1 Physical chemistry
K1 Acrylonitrile Butadiene Styrene
K1 2206.10 Polímeros
K1 3312.09 Resistencia de Materiales
K1 23 Química
K1 2210 Química Física
AB In the present work, the effectiveness of four non-halogenated flame retardants (FR) (aluminium trihydroxide (ATH), magnesium hydroxide (MDH), Sepiolite (SEP) and a mix of metallic oxides and hydroxides (PAVAL)) in blends with recycled acrylonitrile-butadiene-styrene (rABS) was studied in order to develop a more environmentally friendly flame-retardant composite alternative. The mechanical and thermo-mechanical properties of the obtained composites as well as their flame-retardant mechanism were evaluated by UL-94 and cone calorimetric tests. As expected, these particles modified the mechanical performance of the rABS, increasing its stiffness at the expense of reducing its toughness and impact behavior. Regarding the fire behavior, the experimentation showed that there is an important synergy between the chemical mechanism provided by MDH (decomposition into oxides and water) and the physical mechanism provided by SEP (oxygen barrier), which means that mixed composites (rABS/MDH/SEP) can be obtained with a flame behavior superior to that of the composites studied with only one type of FR. In order to find a balance between mechanical properties, composites with different amounts of SEP and MDH were evaluated. The results showed that composites with the composition rABS/MDH/SEP: 70/15/15 wt.% increase the time to ignition (TTI) by 75% and the resulting mass after ignition by more than 600%. Furthermore, they decrease the heat release rate (HRR) by 62.9%, the total smoke production (TSP) by 19.04% and the total heat release rate (THHR) by 13.77% compared to unadditivated rABS; without compromising the mechanical behavior of the original material. These results are promising and potentially represent a greener alternative for the manufacture of flame-retardant composites.
PB MDPI
SN 2073-4360
YR 2023
FD 2023
LK https://uvadoc.uva.es/handle/10324/65587
UL https://uvadoc.uva.es/handle/10324/65587
LA eng
NO Polymers, 2023, Vol. 15, Nº. 11, 2431
NO Producción Científica
DS UVaDOC
RD 03-jun-2024