PA6: Polyamide 6
- Short Name
- PA6
- Name
- Polyamide 6
- Group
- ETP - Engineering Thermoplastics
- General Properties
- Chemical Formula
- Structural Formula
-
Properties
- Glass Transition Temperature
- 45 to 80 °C
- Melting Temperature
- 225 to 235 °C
- Melting Enthalpy
- 190 J/g
- Decomposition Temperature
- 445 to 460 °C
- Young's Modulus
- 2800 MPa
- Coefficient of Linear Thermal Expansion
- 80 to 90 *10¯6/K
- Specific Heat Capacity
- 1.59 to 1.70 J/(g*K)
- Thermal Conductivity
- 0.22 to 0.33 W/(m*K)
- Density
- 1.12 to 1.15 g/cm³
- Morphology
- Semi-crystalline thermoplastic
- General properties
- Good mechanical strength. High wear resistance. High impact strength. Good damping behavior. Good sliding properties
- Processing
- Injection molding, extrusion, blow molding, melting
- Applications
- Textiles (fibers). Mechanical engineering (gear wheels, screws, slide bearings…)
Internet Links
NETZSCH Measurements
- Instrument
- DSC 204 F1 Phoenix®
- Sample Mass
- 10.73 mg
- Isothermal Phase
- 5 min
- Heating/Colling Rates
- 10 K/min
- Crucible
- Al, pierced
- Atmosphere
- N2 (50 ml/min)
Evaluation
The as-received PA6 granulate was highly amorphous, as demonstrated in the 1st heating (blue) by a glass transition with a high Δcp (0.16 J/(g.K) at 36°C) and post-crystallization at 190°C. In the temperature range between approx. 70°C and 150°C, a broad, flat peak can be seen, probably due to evaporation of water, which is responsible for the positive shift in the glass transition temperature of around 15 K between the 1st and 2nd heating.
After controlled cooling, a multiple structured melting peak, indicating several melting phases, was observed in the 2nd heating (green). The temperature of the main peak occurred at 223°C, within the range typical for PA6.
After controlled cooling, a multiple structured melting peak, indicating several melting phases, was observed in the 2nd heating (green). The temperature of the main peak occurred at 223°C, within the range typical for PA6.