A high rate of calcium silicate hydrate conversion observed in Phase II, coupled with lower heat of hydration or
exotherm, yields a finished concrete of higher compressive strength and lower porosity.
The 1st scan data indicate an inflection T of ~38[degrees]C and a residual cure
exotherm of~45 J/g.
[T.sub.stop] [DELTA]H ([degrees]C) (c) (J/g) 1 165 96.2 2 174 107 3 181 121 4 185 83.8 [T.sub.i] represents temperature of onset, [T.sub.p] peak temperature, [T.sub.stop] temperature of completion of the
exotherm (a) Temperature of cure initiation (b) Temperature of cure maximum (c) Temperature of end of cure Table 5: Mechanical properties of the cured films S.
This limits the resultant polymerisation
exotherm and thus there may be relatively less temperature rise with PAC.
The polymerization heat, peak and maximum temperature of
exotherm of B-z[(OH).sub.3] is the was lower than benzoxazine (B-o) monomer.
Then it was cooled to 0 [degrees]C at a definite scanning rate and an
exotherm was obtained.
Its low
exotherm also makes it suitable for potting, encapsulating, and casting, especially where wider cross section thicknesses are specified.
Exotherm Technical Testing Laboratory (Dubai) applied for a licence on 29 June 2010 to use radioactive sources for the purpose of industrial radiography, as mandated by the UAE's Federal Law by Decree No 6 of 2009, Regarding the Peaceful Uses of Nuclear Energy, according to FANR's statement.