Citation: M. Selvi, S. Devaraju, K. Sethuraman, R. Revathi, M. Alagar. Cyclotriphosphazene Fibre Reinforced Poly(benzoxazine-co-e-caprolactam) Nanocomposites for Flame Retardant Applications[J]. Chinese Journal of Polymer Science, ;2014, 32(8): 1086-1098. doi: 10.1007/s10118-014-1479-9 shu

Cyclotriphosphazene Fibre Reinforced Poly(benzoxazine-co-e-caprolactam) Nanocomposites for Flame Retardant Applications

M. Selvi ¹ ,
S. Devaraju ^2,3,4 ,
K. Sethuraman ¹ ,
R. Revathi ¹ ,
M. Alagar ¹

1.
Polymer Composite Lab, Department of Chemical Engineering, Anna University, Chennai-600025, India
2.
1. Polymer Composite Lab, Department of Chemical Engineering, Anna University, Chennai-600025, India
3.
2. Next MEMS Lab, School of Mechanical Engineering, Pusan National University, Busan 609-735, South Korea
4.

Received Date: 7 December 2013
Revised Date: 29 March 2014

Fund Project: This work was financially supported by the BRNS, G. No. 2012/37C/9/BRNS, Mumbai, Govt. of India.

Cyclophosphazene nanotube (PZT) incorporated poly(benzoxazine-co--caprolactam) (P(BZ-co-CPL)) nano-composites were developed for improving flame retardant properties. The effects of PZT on the flammability properties of P(BZ-co-CPL) matrix were evaluated through UL-94 flammability test and limiting oxygen index (LOI). The UL-94 results of P(BZ-co-CPL)/PZT hybrid nanocomposites showed V-1 rating, whereas neat P(BZ-co-CPL) showed burning rating. The LOI values are increased from 25.4 to 31.4 for 1.5 wt% PZT incorporated P(BZ-co-CPL) nanocomposite systems. SEM was used to study the char morphology of P(BZ-co-CPL)/PZT after being exposed to UL-94 flammability test. Data from thermal studies indicate that the PZT incorporated P(BZ-co-CPL) systems possess better Tg and thermal degradation behavior when compared to the neat P(BZ-co-CPL). The values of dielectric constant are decreased with increasing temperature. From the values, it is ascertained that the P(BZ-co-CPL)/PZT systems exhibit stable dielectric behavior with regard to variation in temperature. The TEM images ascertain the uniform dispersion of PZT in the P(BZ-co-CPL) matrix.
- Polybenzoxazine,
- Phosphazene,
- Flame retardant,
- Dielectric properties
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