- 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.