N-th Order Kinetics model
The n-th order reaction kinetics (Kamal model) is used to calculate the curing behavior of a thermoset material in the following analyses:
- Reactive Molding
- Microchip Encapsulation
- Underfill Encapsulation
- Chemical Foam Molding analysis
The n-th order reaction kinetics model is given by the equation:
where
is the degree of cure (0-1),
is temperature (K),
is time (s),
- and where
,
,
,
,
and
are constants.
The model also includes induction time. Some materials undergo an induction period before curing starts to take place. The length of this induction period (induction time) can be calculated from the following equation:
where
is the induction time,
is temperature (K),
(s), and
(K) are constants associated with the induction time,
.
During curing kinetics measurement, the heat of reaction is also measured. The heat of reaction is represented by (J/kg).This heat of reaction appears on the Reaction Kinetics Properties tab of the Thermoset material dialog.