Because of talc’s significantly higher thermal conductivity
(compared to the polymer), the heat
introduced and generated during processing is
transmitted through the mixture more quickly
(Figure 2). The heat is also transported out of the
compound faster during cooling.
Incorporating talc in a compound increases the
thermal conductivity, resulting in faster production
rates. Experience with filled polymers is that
conductivity depends only on the filler content,
within reasonable tolerances.