and DSC curing results for OSB-derived resins were not very conclusive in terms of estimating the real impact of the modified or unmodified lignins on resin curing.
The Arrhenius plot of gel time
for the SiAION suspensions (25 and 35 vol%) and premix solution are given in Fig.
of thermosets has been considered the time when the viscosity of the reacting system tends to infinity (25), (29), however it is not easy to determine the exact time of the abrupt viscosity rise.
Overall, however, the 40-nm fumed silica nanocomposites exhibit a similar response to the 12-nm fumed silica nanocomposites, but the gel times
are slightly longer, and the viscosity at gel is slightly lower.
Clay/Modifier Weight percentage (wt%) Solution gel time
(SG/s) PK-805/MI 3 Over 1500 PK-805/PI 3 450.
Similarly for epoxy-DAP systems the gel time
decreased as the content of DAP increased, which can be due to the simultaneous occurrence of curing of epoxy and polymerization of DAP.
The model adopted to predict gel times
at temperatures different from those used in the experiments is based on a linear interpolation of Eq.
Accordingly, the DCP conversion at the gel time
increases with the decrease of the molecular weight.
The increase in the gel conversion and in the gel time
has never been considered in the mechanism of shrinkage control, even though gelation is a critical step for molding.
Slow gel times
provide excellent processing capability through both manual and robotic plural component spray equipment without delays in through-cure
About 30 seconds of rubbing will give the gel time
to soak into your skin.
The named epoxy system has a 45 minutes gel time
so the mixture was mechanically homogenized for 15 minutes before molding.