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. (September 2015)

• Record Type: Journal Article
• Authors: Kim, Do Kyun; Song, Kwang Ho; Koo, Chong Min; Hong, Soon Man; Chae, Dong Wook
• Is Part Of: Journal of fire sciences. Volume 33:Number 5(2015:Sep.)
• Page Start: 339
• Page End: 357
• Publication Date: 2015-09
• Subjects: Nylon 66 -- poly(2, 6-dimethyl-1, 4-phenylene ether) -- phosphinate -- mechanical properties -- rheology -- flame retardancy; Flammable materials -- Periodicals; Combustion gases -- Toxicology -- Periodicals; Fireproofing -- Periodicals; 628.922
• DOI: 10.1177/0734904115595993
• Languages: English
• ISSNs: 0734-9041

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.