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STRUCT-CORE Fl Ml
MAIN FEATURES.
• Ml Classified (UnderAFNOR requirements): non flammable product.
• Fl Classified (Under AFNOR requirements): toxic gases or dense smoke are not produced. So important during the evacuation.
AFNOR tests are more severe than FAR-AIRBUS test, mainly for smoke's density and toxicity.
• Dense smoke could not allow to find easily escape ways. Toxic gases could affect seriously the consciousness.
• This material do not depend on any non-flammable component, is non-flammable itself.
• Has been delivered in sheets of several thicknesses or/and densities (100-80-60 kg/m3). Main applications like thermal or acoustical isolation for trains, metropoli­tans , coaches, etc.
• Low densities (60 Kg/m3) are applied in public constructions (cinemas, theatres, hospitals,..), like thermal and acoustic isolation, where a high fire level protection is required.
CHEMICAL STRUCTURE.
Polymer made up with isocyanuric rings joined by aromatic chains containing urethane groups.
The basic concept in the formulation of Fl Ml is the use of some additive that undergo specific reactions in the presence of a flame.
From those reactions such compounds originate leading to the formation of a compact film of char without causing any flammable gases. The thin layer of char has a twofold action:
a. It lowers the speed of diffusion of the atmospheric oxygen towards the polymer that is so prevented from degrading by a thermal—oxidative process.
b. It creates a barrier against the radiant heat of the flame.
C/Muntaner, 525 08022 Barcelona(Spain) Tel.+34 934 18 29 29 Fax.+34 934 18 54 71 plasticel@plasticel.es 7
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