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Curing kinetics of chemically recyclable thermoset and their nanocomposites

Thermochimica Acta, ISSN: 0040-6031, Vol: 679, Page: 178317
2019
  • 3
    Citations
  • 0
    Usage
  • 10
    Captures
  • 0
    Mentions
  • 0
    Social Media
Metric Options:   Counts1 Year3 Year

Metrics Details

  • Citations
    3
    • Citation Indexes
      3
  • Captures
    10

Article Description

In this work the role of the addition of barium titanate (BaTiO 3 ) or multi-walled carbon nanotubes (MWCNT) on curing kinetics of the polyhexahydro-s-triazine (PHT) was investigated. The estimation of kinetic parameters triplet (activation energy, pre-exponential factor, and the reaction model) of PHT and its nanocomposites were made by isoconversional models. It is possible to state the conversion of the polyhemiaminal (PHA) into PHT polymer and all nanocomposites studied in this work is dominated by a single step according to the Vyazovkin method. The activation energy calculated by studying the cure kinetics for the chemical rearrangement of PHT polymer was 143 kJ/mol. Besides, the addition of BaTiO 3 nanoparticles greater than 1.5 wt% and 0.86 wt% of MWCNT showed a catalytic effect on the cure reaction with respect to the neat polymer. Finally, the Avrami-Erofeev’s model proved to be the most suitable that represents the cure kinetics of PHT polymer and their nanocomposites.

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