Processing and Characterization of Polyphenylene Ether/Polystyrene/Nylon-6 Ternary Blends

Abstract

Polyphenylene ether (PPE) is a polymer with very high glass transition temperature, superior thermal stability but poor melt processability. Mainly to improve its processability and chemical resistance, it is blended with Polystyrene (PS) and Nylon-6, respectively. In this research, ternary blends of PPE/PS/Nylon-6 were prepared using co-rotating twin screw extrusion and test specimens were injection molded. The influence of Maleic anhydride and screw speed on the mechanical and thermal properties of the ternary blends was investigated. The 40/40/20 blends, without Maleic anhydride, processed at screw speed of 600 min–1 showed highest tensile, flexural and impact strengths of 65.74 MPa, 82.22 MPa and 8.88 kJ/m2, respectively. Complete miscibility of the three polymers in the ternary blend was evidenced by scanning electron micrographs. Glass transition temperature of the ternary blend was 127 °C. High thermal and dimensional stability of the blend was evidenced by lowest volatile mass and highest residual mass at 800 °C along with decomposition temperature of 458.6 °C. Maleic anhydride was not effective as compatibilizer in improving the mechanical properties of the ternary blend.

Preparation and property analysis of kaolin/melamine cyanurate/aluminum diethylphosphinate/recycled PET composites

“…When 15% MCA was added to R‐PET, the LOI of 15‐MCA/R‐PET composite was 26.4%, and the flame retardant reached UL94 3.2 mmV2 grade. This enhancement might be ascribed to MCA was decomposed by heat to produce non‐flammable gases 35 such as NH 3 , N 2 , NO 2 , CO 2 , and water vapor, which could dilute oxygen and flammable gases produced in the combustion process, 16 thus improved the flame retardant of R‐PET. When 15% ADP was added to R‐PET, the LOI of 15‐ADP/R‐PET composite was 30.2%, and the flame retardant reached UL94 3.2 mm V0 level.…”

Effect of melamine cyanurate on thermal and flame-retardant behaviour of chopped glass fibre reinforced polyphenylene ether/polystyrene/nylon-6

“…% showed tensile modulus of 3.63 GPa, elongation at break 2.49 and impact strength 20.82 KJ/m 2 . 8 The corresponding properties of PPE/PS/nylon-6/chopped fibre (40 wt. %) were 11.11 GPa, 1.28 and 13.93 KJ/m 2 .…”

Halogen Free Flame-Retardant Glass Fiber Reinforced PA 66 / PPO Alloys

“…The glass transition temperature (Tg) of polyphenylene ether is 210°C, which can maintain its good mechanical properties, ame retardant properties and electrical properties in a large temperature range. The dielectric properties of PPO are the best among the ve engineering plastics [3][4][5] . In addition, the dimensional stability of polyphenylene oxide is good at plastic cage, but the disadvantage of polyphenylene oxide is that it has a large melt viscosity and it is di cult to process.…”

“…However, the mechanical properties of the simple blend need to be improved due to the poor interface compatibility between PA66 and PPO. Therefore, some compatibilizers, such as high impact polystyrene and styrene-butene copolymer, were introduced to enhance the compatibility of the PPO/PA66 [2][3]5] .…”