Citation: Cun-wei Zhang, Rong-jie Yang, Xiang-mei Li, De-qi Yi. Preparation of Polystyrene/Triphenyl Phosphate Composites by Suspension Polymerization and Melt Extrusion Method——A Comparative Study[J]. Chinese Journal of Polymer Science, ;2016, 34(6): 688-696. doi: 10.1007/s10118-016-1791-7 shu

Preparation of Polystyrene/Triphenyl Phosphate Composites by Suspension Polymerization and Melt Extrusion Method——A Comparative Study

a.
National Engineering Research Center of Flame Retardant Materials, School of Materials, Beijing Institute of Technology, Beijing 100081, China
b.
Fire Command Department, Chinese People's Armed Police Forces Academy, Langfang 065000, China

Corresponding author: Xiang-mei Li, bjlglxm@bit.edu.cn
Received Date: 26 November 2015
Revised Date: 28 January 2016
Accepted Date: 18 February 2016

Polystyrene (PS)/triphenyl phosphate (TPP) composites were prepared by both suspension polymerization and melt extrusion, and a comparative study of the flame retardance and mechanical properties was carried out. The results showed that suspension polymerization was a better technique than melt extrusion for obtaining good dispersity of the PS/TPP composite. The TPP nanoparticles, which were approximately 50 nm in size, were homogenously and uniformly dispersed in the PS matrix by suspension polymerization in one-step. However, the PS/TPP composite was partially agglomerated, exhibiting irregularly shaped micron-scale particles as a result of melt extrusion. In contrast to the melt extrusion, the limited oxygen index (LOI) of the PS/TPP nanocomposite by suspension polymerization increased to 22.6% from 21.8%, and time to ignition (TTI) increased by 12.3%, the peak heat release rate (PHRR) decreased by 8.5%, and the total heat release (THR) decreased by 11.0%. The mechanical properties of the PS/TPP nanocomposite by suspension polymerization also increased. The tensile strength, elongation at break, and flexural strength increased by 36.4%, 8.5%, and 108%, respectively.
- Polystyrene,
- Triphenyl phosphate,
- Flame retardance,
- Suspension polymerization,
- Melt extrusion
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