PALSUN Technical Guide

PALSUNTechnical ManualG. Flammability:General: As a thermoplastic, PALSUN eventually melts and burns under the intense heat of a blazing fire.However, PALSUN does not propagate flame, and is solidified and self-extinguished as soon as the direct flameis taken away. PALSUN doesn’t produce any toxic fumes or gases when it burns.PALSUN FR: Flame retardant additives make the sheets virtually non-combustible. When the flame licks thesheet it only gets scorched and eventually melts, solidifying quickly when the direct heat source is removed.Drippings do not ignite other combustible materials, as they actually do not burn.Smoke and heat extraction: In an actual, full-scale combustion, when PALSUN overhead glazing (as in skylights)is exposed to intense heat it will soften at 150° -160°C and produce apertures in the glazing, enabling heatand smoke to escape. Reduced temperatures inside the structure help to extinguish the fire.Flammability Classifications: PALSUN and PALSUN FR are classified as appears in the following table, basedon tests executed by certified independent testing laboratories.Table 8: Fire Classifications listed according to the relevant codes or standardsProductPALTUF/PALSUN 2Standard Description ClassificationDIN 4102BS 476/7NSP 92501, 4NSP 92501, 4CSE RF 2/75/A CSE RF 3/77UL-94-ClearClearClear--B-1Class 1YM-1M-2Class 1V-0, V-1, V-2 1PALTUF/PALSUN FR 2NSP 92501, 4UL-94ASTM D-2863-87AU 1530.3-1982-Clear/OpaqueClear/Opaque-M-1V-0L.O.I. = 30Iagnitability Index = 9Spread of Flame Index = 8Heat Evolved Index = 10Smoke Developed Index = 81 Classification depends on thickness2 UL recognition for PALSUN and PALSUN FR clear. Fire Number E221255.H. Chemical Resistance:PALSUN sheets are compatible with many materials and chemicals, show limited resistance to others, and areincompatible with a third group, with which contact may be devastating. A more detailed discussion and a tabledepicting the resistance of PALSUN to a wide range of chemicals appear in Appendix 1 on page 36.11