Study of microindentation and differential scanning calorimetry of reinforced polyamide

Polyamides comprise the largest family of plastics engineering with a very wide range of applications in many fields of activities. Characteristically polyamides are resistant to wear and abrasion, have pod mechanical properties even at elevated temperatures, low permeability to gases and good chemical resistance. Samples are obtained by monocomponent injection using Taguchi experimental plan with six input factors and two levels of variation for each of them. The considered parameters inside the experiment are mold temperature, melt temperature, injection pressure, injection speed, cooling time (in mold) and injection time. This study presents some aspects of microindentation and differential scanning calorimetry for polyamide with 30% fiberglass and microsphere reinforcement. To determine the critical points of transformation, transformation starting temperature (onset), temperature when 50% of the change occurred (peak) and finally the transformation temperature (end) and will use the tangent method. The amount of heat dissipated/absorbed will be determined using a sigmoidal baseline ([Delta]H area.