General : Carbon
Black Content Tester has been designed incorporating many
features and new ideas. The aparatus conforms to the most
generally recognised National & international standards
including BIS IS ASTM etc.
Introduction : The method
depends on the fact that non-polar olefin polymers, when
heated in inert atmosphere (e.g.oxygen free nitrogen). undergo
a pyrolytic depolymerisation, breaking down into smaller
molecules which can be the furnace and it has been demonstrated
that they may be recovered quantitatively by this method.
Basic Unit : Carbon Content
Tester is controlled by "Digital Temperature Controller"
Steered by a Platinum / Platinum - Rhodium Thermocouple
and combining a temp. indicator with the setting scale.
The furnace contains 2.0Kw heating element wound on a tubuler
" Quartz" tube which is heavily insulated within
a fire-bricks & glass-wool casing. A fused quartz "Combustion"
tube, which is twice as long as the furnace, is kept inside
the furnace heating tube. This tube contains the "Boat"
in which is pyrolised. The rubber corks with glass-tube
are also provided at the both ends of the "combustion"
tube. The wash bottles with trap unit are filled with pyrogallol/KOH
solution, trichloro ethylene and kept at the sides of the
apparatus. After the Nitrogen Carrier, a Gas Flow-meter
and U-Tube (filled with CaCI3) is connected with pyrogallo/KOH