- Author
- Wang, Z. | Jiang, D. D. | Wilkie, C. A. | Gilman, J. W.
- Title
- Further Studies on Fire Retardant Polystyrene by Friedel-Crafts Chemistry.
- Coporate
- Marquette Univ., Milwaukee, WI National Institute of Standards and Technology, Gaithersburg, MD
- Journal
- Polymer Degradation and Stability, Vol. 66, 373-378, 1999
- Keywords
- polystyrene | fire retardants | calorimetry | crosslinking | phosphate | styrene | cone calorimeters
- Abstract
- The combination of a copolymer of 4-vinylbenzyl alcohol and styrene with 2-ethylhexyldiphenylphosphate (DPP) and with metal chlorides has been studied by TGA, radiative gasification. Cone calorimetry, and oxygen index measurements. Evidence is presented in support of a cross-linking reaction with the additives and the copolymer which proceeds through a Friedel-Crafts mechanism. This approach reduces the peak heat release rate (HRR) by 60% as measured in the Cone Calorimeter. There is a significant reduction in the mass loss rate during the thermal degradation and evidence of char formation is observed in the radiative gasification experiments.