Objectives

To develop HFFR ABS nanocomposites using two approaches:

 

 - Physical combination of commercial nanoparticles and fire retardants, using different ceramifying agents (Aluminium and Boron phosphate) in order to promote synterisation of nanoparticles at thesurface of burning polymer.    

 - Chemical combination of nanoparticles and fire retardant, grafting flame retardant groups as phosphates or melamine derivatives onto the nanoparticles 

        

Control of mechanical properties of fire retarded ABS. Nanoparticles will affect both stiffness and impact resistance, acting on both the mechanical properties of the polymer and on the morphology of the polymer/FR blends. The incorporation of nanoparticles into the FR polymer will be carried out by melt blending and/or melt reactive blending


 To check the possibility to modify thermal degradation pathway of ABS by the addition of halogen free chemical additives, promoting charring as a side reaction during polymer decomposition, thus limiting production of hydrocarbons to feed the flame.

 

Flame retardancy performance targeted in this proposal are as follows:

 

  • UL94V0 [IEC60695-11-10]
  • Glow Wire Flammability Index (GWFI)  at960°C  [IEC 60695-2-12]
  • Glow Wire Ignition Temperature (GWIT) at 725°C [IEC 60695-2-13]
  • The above properties should be reached while keeping a sufficient impact resistance(>10 kJ/m² [ISO 179/1eU]) and sufficient gloss of the surface.