Material's resistance against fire explained also as flammability capacity is named as fire performance. Fire resistance tests are applied by means of small-scale modeling of knit (join) lines, where fire spreads the most, belonging to wall and roof panels. All standards and test methods about fire performance of sandwich panels are detailed in TS EN 14509. Materials are classified in six classifications from A1 to F. Material's other classifications are determined in accordance with smoke and dropping quantity coming in sight after fire.
TS EN ISO 11925-2: Flammability Tests (SFI): It is a fire test method simulating application of a lighter-sized fire source to sample's corner or surface for 15 or 30 seconds.
TS EN 13823: Reaction tests against fire (SBI): With principals of this testing method, A2, B, C and D class materials' reactions against fire is determined. On the other side classification is conducted as d0, d1, d2 according to whether dropping occurs within first 10 minutes or not and whether dropping pieces burn more than 10 second or not. Besides another classification is conducted as s1, s2 and s3 according to situation within first 10 minutes.
PUR/PIR: Right chemical formulation of plastic foams provides advantages in terms of fire performance. High isocyanate ratios and flame retardant additives are determinative for polyurethanes' fire performance.
XPS/EPS: Both expanded polystyrene (EPS) and extruded polystyrene (XPS) are plastic foams having the least fire resistance. They begin melting and generating fire droppings in 100 °C.
Rock Wool: Rock wool materials taking part in inorganic material group are classified as noninflammable. Rockwool-filled panels provide the best performance for wall, roof and internal partition wall application resistant against fire. Fire resistance of rockwool-filled sandwich panel ranges from 30 minutes and 120 minutes depending upon rock wool type, thickness and connection details.
|Temperature for Losing Dimensional Stability (°C)||~200||~200||~90-100||-|
|Flammability Temperature (°C)||285-310||415||245-345||-|
|Fire Performance||Good||Good||Bad||Very Good|
FIRE PERFORMANCE VALUES OF MEKPAN PANEL PRODUCTS
|Polyurethane-filled Sandwich Panels||B.s2.d0|