Abstract
This paper discusses theoretical background of differential scanning calorimetry (DSC) and its application for phenol-formaldehyde (PF) adhesives to characterize their thermal curing behaviors. Three different scanning methods (single-heating rate, multi-heating rate and isothermal method) of DSC were used for liquid and powdered PF resins. The result showed that the single-heating rate method gave larger activation energy compared with that of the multi-heating rate method. The multi-heating rate method was successfully employed for the thermal characterization of powdered PF resin that showed two distinctive exothermic peaks. The isothermal method can provide an insight for how PF resin cures in hot-pressing process.
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