|
doi:10.3850/978-981-08-7724-8_15-03
An Investigation of the UL-94V Plastics Flammability Test
J.G. Quintiere1,a, B.P. Downey1,2 and R.E. Lyon3
1Department of Fire Protection Engineering, University of Maryland, College Park, MD 20742, USA.
ajimq@umd.edu
2Currently with SAIC, Fairfax, VA, USA
3Airport and Aircraft Safety Division, William J. Hughes Technical Center, Federal Aviation Administration, Atlantic City, NJ, USA
ABSTRACT
The UL-94 Vertical Burning Flammability Test (UL-94V) is studied in an attempt to
predict its performance from conventional material fire properties. It is shown that the
heat release parameter (HRP), its critical heat flux for piloted ignition (CHF), and the
thermal response parameter (TRP) underlie most of the behaviour of the test. The
burner ignition premixed flame and the laminar diffusion flame of a material have a
nominal heat flux of about 60 kW/m2, and the flame height is found proportional to the
heat release rate per unit area (HRR) to the first power. Also critical values of HRR
required for ignition, sustained burning, and flame spread in the test were theoretically
estimated at 80, about 250, and 300 kW/m2, respectively. HRR was found to be a
significant factor in correlating UL-94V ratings.
Keywords: UL-94V, Prediction, HRR, Heat flux.
Back to TOC
FULL TEXT(PDF)
|