PEKEKK: Polyacryletherketoneetherketoneketone

General Properties

Structural Formula


Properties

Glass Transition Temperature165 to 175°C
Melting Temperatures and EnthalpiesThe enthalpy of fusion of a substance, also known as latent heat, is a measure of the energy input, typically heat, which is necessary to convert a substance from solid to liquid state. The melting point of a substance is the temperature at which it changes state from solid (crystalline) to liquid (isotropic melt).Melting Temperature380 to 390°C
Melting Temperatures and EnthalpiesThe enthalpy of fusion of a substance, also known as latent heat, is a measure of the energy input, typically heat, which is necessary to convert a substance from solid to liquid state. The melting point of a substance is the temperature at which it changes state from solid (crystalline) to liquid (isotropic melt).Melting Enthalpy60 J/g
Decomposition Temperature580 to 600°C
Young's Modulus4300 MPa
Coefficient of Linear Thermal Expansion45 *10-6/K
Specific Heat Capacity-
Thermal Conductivity0.29 W/(m*K)
Density1.3 g/cm³
MorphologySemi-crystalline thermoplastic
General propertiesGood mechanical properties. High temperature and heat resistance. Good chemical resistance. Low humidity absorption. Good electrical insulation. Good dimensional stability
ProcessingExtrusion, injection molding
ApplicationsMechanical engineering. Transportation and conveyor technique. Automobile industry. Chemical plant construction

NETZSCH Measurement

InstrumentDSC 204 F1 Phoenix®
Sample Mass10.69 mg
Isothermal Phase3 min / 5 min
Heating/Colling Rates10 K/min
CrucibleAl, pierced lid
AtmosphereN2 (40 ml/min)

Evaluation

Since the polymer is semi-crystalline, it exhibits both a melting transition and a Temperatura di transizione vetrosaLa transizione vetrosa è una delle più importanti proprietà chimico-fisiche dei materiali amorfi e semi-cristallini, come, ad esempio, vetri, metalli (amorfi), polimeri, ingredienti farmaceutici e alimentari e definisce l’intervallo di temperatura in cui le proprietà meccaniche die materiali variano da duro e fragile a più morbido, malleabile o gommoso.glass transition. The glass transition for the example occurred at approx. 168°C (2nd heating, red, midpoint), and the melting transition at 387°C (peak temperature, 2nd heating). The melting enthalpy increased from 47 J/g in the 1st heating (blue) to approx. 59 J/g in the 2nd heating, reflecting an increase in the crystalline content of the polymer. The height of the glass transition step (Δcp), normally a measure of the amorphous content in the sample, remained nearly constant. The small shift of the Melting Temperatures and EnthalpiesThe enthalpy of fusion of a substance, also known as latent heat, is a measure of the energy input, typically heat, which is necessary to convert a substance from solid to liquid state. The melting point of a substance is the temperature at which it changes state from solid (crystalline) to liquid (isotropic melt).melting temperature (peak temperature) between the 1st and 2nd heatings of nearly 2 K is due to the better contact between the sample and crucible bottom after the first melting.