Characterization of compatibilized blends of nylon 66/poly(2,6-dimethyl-1,4-phenylene ether)/high-impact polystyrene filled with phosphinate-based flame retardants: Mechanical property, rheological behavior, and flame retardancy

Do Kyun Kim, Kwang Ho Song, Chong Min Koo, Soon Man Hong, Dong Wook Chae

Research output: Contribution to journalArticle

6 Citations (Scopus)

Abstract

The optimum weight ratio of each component in the compatibilized blends of nylon 66/poly(2,6-dimethyl-1,4-phenylene ether)/high-impact polystyrene with polystyrene-co-maleic anhydride and styrene-ethylene-butylene-styrene block copolymer grafted with maleic anhydride was determined in terms of exhibiting balanced mechanical properties. The mechanical strength of the blends was deteriorated with increasing phosphinate-based flame retardant content while the tensile modulus increased. For UL94V test, the addition of ∼10 wt% phosphinate did not have a significant effect on the flame retardancy showing V2 grade while further addition gave rise to char formation resulting in V0 grade. Limiting oxygen index values increased greatly by ca. 34% at 5 wt% phosphinate, followed by mild increase by further addition. Heat release rate peaks of the blends were reduced and broadened with increasing phosphinate content showing little difference from 15 wt%. The complex viscosity increased with phosphinate content, but its increasing extent decreased at a high frequency. In the Cole-Cole plot, the presence of the phosphinate shifted the plot from unfilled blends without showing a single master curve depending on its loading level.

Original languageEnglish
Pages (from-to)339-357
Number of pages19
JournalJournal of Fire Sciences
Volume33
Issue number5
DOIs
Publication statusPublished - 2015 Sep 5

Keywords

  • flame retardancy
  • mechanical properties
  • Nylon 66
  • phosphinate
  • poly(2,6-dimethyl-1,4-phenylene ether)
  • rheology

ASJC Scopus subject areas

  • Mechanical Engineering
  • Mechanics of Materials
  • Safety, Risk, Reliability and Quality

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