Flame retardant based on natural monomers for EVA cable'

1
Process Developed
Flame retardant based on natural monomers for
EVA cable.
  Property EVA- EVA-
Specification TBPTP DBDPO   LOI
30 29.5 30 min. Smoke Density
Rating 3.0 48.5 20-30
max. Light Transmission 96
20 80 min. Max. Light
Absorption 4 80
20 min. Acid Gas Emission, 2
10.5 max. Volume Resistivity,
ohm cm x 1010 1.4 1.4
- Elongation
400 450 150 min. Aging at 100C/
168 hrs. TS/ Elongation 7.8/300
7.7/350
The suitability of the FR, 3-(tetrabromopentadec
yl) 2,4,6-tribromophenol (TBPTP) developed from
cardanol was evaluated for use in cable
insulating and jacketing materials based on LDPE
and EVA.

The FR is characterised by the presence of
bromine in the aliphatic (30.5) as well as
aromatic (20.5) moieties of the molecule which
can, in contrast to fully aromatic halogenated
FRs such as decabromodiphenyloxide (DBDPO - 83
Bromine), provide halogen over a wide
temperature range to the combustion zone of the
decomposing polymer.
Test results from NICCO Corporation, Calcutta