Paper presented as part of a special issue on nanocomposites and flame retardancy.
Flame-retardant unsaturated polyester resin incorporating nanoclays†
Article first published online: 23 FEB 2006
Copyright © 2006 John Wiley & Sons, Ltd.
Polymers for Advanced Technologies
Special Issue: Special issue on nanocomposites and flame retardancy
Volume 17, Issue 4, pages 294–303, April 2006
How to Cite
Nazaré, S., Kandola, B. K. and Horrocks, A. R. (2006), Flame-retardant unsaturated polyester resin incorporating nanoclays. Polym. Adv. Technol., 17: 294–303. doi: 10.1002/pat.687
- Issue published online: 24 APR 2006
- Article first published online: 23 FEB 2006
- Manuscript Accepted: 1 NOV 2005
- Manuscript Revised: 24 OCT 2005
- Manuscript Received: 11 MAY 2005
- Engineering and Physical Science Research Council
- EPSRC. Grant Number: GR/60690/01
- flame retardance;
- cone calorimetry;
This work reports the use of polymer-layered silicate nanoclays as potential flame retardants in unsaturated polyester resins. Preparation, characterization and flammability properties of polyester-clay hybrids have been studied. X-ray diffraction studies have provided evidence that dispersion of functionalized clays in the polymer matrix depends on the type of functional group of the organic modifier used. Flammability properties studied using cone calorimetry suggests that incorporation of nanoclays (5% w/w) reduces peak heat release rate (PHRR) by 23–27% and total heat release (THR) values by 4–11%. The fire growth rate index (FIGRA) is also reduced by 23–30% following nanoclay inclusion. While incorporation of condensed-phase flame retardants such as ammonium polyphosphate, melamine phosphate and alumina trihydrate reduce the PHRR and THR values of polyester resin, the inclusion of small amounts of nanoclay (5% w/w) in combination with these char-promoting flame retardants causes total reductions of the PHRR of polyester resin in the range 60–70%. Ammonium polyphosphate, in particular and in combination with polyester-nanoclay hybrids show the best results compared to other flame retardants. Copyright © 2006 John Wiley & Sons, Ltd.