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

Title
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
Authors
김도균송광호구종민홍순만채동욱
Keywords
Nylon 66; poly(2; 6-dimethyl-1; 4-phenylene ether); phosphinate; mechanical properties; rheology; flame retardancy
Issue Date
2015-09
Publisher
Journal of fire sciences
Citation
VOL 33, NO 5, 339-357
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 approximate to 10wt% 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 5wt% 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 15wt%. 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.
URI
http://pubs.kist.re.kr/handle/201004/50834
ISSN
07349041
Appears in Collections:
KIST Publication > Article
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