A low heating rate of 3[degrees]C/min was used during carbonization, which reduced the instantaneous mass and heat transfer during exothermic reaction
This exothermic reaction
blows the shell apart: It transforms the mixture of chemical powders into hot gases that expand suddenly.
In-situ Al/Ti[B.sub.2] composites were manufactured with an exothermic reaction
process via KB[F.sub.4] and [K.sub.2]Ti[F.sub.6] salts.
The pattern may be explained by the difference in permeability of the evolved gases (it was found that [N.sub.2] is less permeable than and C[O.sub.2] with PE ([N.sub.2] = 2.7 c[m.sup.3] mm/s c[m.sup.2] cmHg and C[O.sub.2] = 35 c[m.sup.3] mm/s c[m.sup.2] cmHg) (2) or by the differences in endothermic and exothermic reaction
, which is explained in the next section.
For instance, during the dissolution of modifiers containing elemental Sr, an exothermic reaction
occurs if melt temperatures are near 1292F (700C).
These compounds tend to be very sensitive to curing conditions because of the exothermic reaction
of sulfur and rubber.
During the exothermic reaction
a considerable quantity of heat is developing so the reaction control is necessary.
The results of the measurement were assumed to represent the exothermic reaction
of the remaining epoxy group, and the reaction ratio was calculated from the exothermic calorimetric value.
Internal cure develops as a result of exothermic reaction
that takes place after the cores are removed from the corebox.
The preparation of cellular poly(urethane-isocyanurate) involves the exothermic reaction
between isocyanate and polyol, and also includes surfactants, blowing agents and catalysts.
* Cleaning flux--(fluoride compounds), removes solid, nonmetallic inclusions; an exothermic reaction
to soften the dross and keep furnace walls clean.
The main reason for obtaining higher conversions at higher initiator concentration is that owing to the strong exothermic reaction
, the temperature of the mixture rises above the set temperature of the oil bath (Fig.