Research Article

Investigation of Cure Reaction, Rheology, Volume Shrinkage and Thermomechanical Properties of Nano-TiO2 Filled Epoxy/DDS Composites

Table 4

Gelation and vitrification times for the TiO2/epoxy composites.

(°C)Gelation time (sec) of the epoxy phaseAverage of all the three parameters (s)Vitrification time (sec) of the epoxy phase
( ) (s)tan Max (s) (s)tan (s)Max (s)

Neat epoxy
150401535803568372146534853
165226620482139215124762536
180114610001147109715711452

0.7 wt% TiO2 composites
150393935343470364844154475
165217420081992205822952295
180114510241066107812651323

3.6 wt% TiO2 composites
150390635873397363042354186
165213719861943202224152475
180110110001039104712111271

6.9 wt% TiO2 composites
150395435583328361343554417
165211519411905198723562356
18010579521021101011441205