Polystyrene with reduced flammability containing halogen-free flame retardants

P. Jankowski; M. Kędzierski

Published : 2013-05-30

Vol. 58 No. 5 (2013)

Polystyrene with reduced flammability containing halogen-free flame retardants

P. Jankowski M. Kędzierski

Abstract

Additives that reduce the flammability of plastics were synthesized by a modification of expandable graphite (EG) using melamine salts (phosphate or cyanurate). Polystyrene (PS) was prepared by suspension polymerization of styrene in the presence of the obtained EG/melamine salt compounds. The resulting PS composites achieved horizontal FH-1 and vertical V-0 flammability ratings in the UL-94 burning test and the limiting oxygen index values increased by over 50 % compared with non-modified polystyrene. An advantageous effect of EG/melamine salt additives on the suppression of polystyrene combustion processes was also indicated by cone calorimetry and thermogravimetric analysis.

Keywords

bezhalogenowe dodatki ograniczające palność ; polistyren o ograniczonej palności ; grafit ekspandujący ; cyjanuran melaminy ; fosforan melaminy halogen-free flame retardants ; polystyrene of limited flammability ; expandable graphite ; melamine cyanurate ; melamine phosphate

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Jankowski, P., & Kędzierski, M. (2013). Polystyrene with reduced flammability containing halogen-free flame retardants. Polimery, 58(5), 342–349. Retrieved from https://ichp.vot.pl/index.php/p/article/view/739

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