Mechanical properties of PHB compounds
can be processed as classic thermoplasts
biodegradable
waterproof
small tendency to creep
behaves similar to LPC's in the melt, for this:
finest surfaces
thin walls
microparts
free from even traces of catalysts!
highly crystalline (60 to 70%), for this:
excellent resistance to solvents
temperature of use: -30 to 120°C
shrinkage: 1,3 %
|
Type |
Biomer® P209 |
Biomer® P226 |
|---|---|---|
|
Modulus MPa (1mm/min) |
840-1200 |
1140-1900 |
|
Tensile strength MPa (50 mm/min) |
15-20 |
24-27 |
|
Elongation (%) (50 mm/min) |
600-1200 |
6-9 |
|
Flexural strength (N/mm2) |
18 |
35 |
|
Deformation at bending break (%) |
4,7 |
6,6 |
|
Flexural strength at 3,5% (N/mm2) |
16 |
29 |
|
Impact strength 23°C KJ/m2 (ISO 179/1eU ) |
no break |
no break |
|
Impact strength -30°C KJ/m2 (ISO 179/1eU) |
70 |
30 |
|
Notched impact strength 23°C (ISO 179/1eA |
4,7 |
2,7 |
|
Notched impact strength -30°C (ISO 179/1eA) |
3,4 |
1,4 |
|
MFI 180°C |
10 (2,16 kg) |
10 (5 kg) |
|
MVR 180°C |
10 (2,16 kg) |
9,5 (5 kg) |
|
Vicat-Temperature °C (ISO 306/A/120) |
134;54 (B/50) |
147 |
|
HDT °C (ISO 75/A) |
50 |
59 |
|
Density (g/cm3) |
1,20 |
1,25 |
|
Moisture absorption (%) |
0,75 |
0,4 |
|
Hardness (Shore D) |
57 |
67 |
|
Shrinkage (%) |
1,3 |
1,3 |
*) means of tests done at least 4 weeks after preparing test specimens.
Data for most parts from University of Applied Sciences
Hannover
|
Polymer |
Tensile strength |
Elongation at break |
Modulus |
|---|---|---|---|
|
Biomer® P226 |
24-27 |
6-9 |
1140-1900 |
|
PP |
22 |
12-20 |
600-1200 |
|
Biomer® P209 |
15-20 |
600-1200 |
900-1200 |
|
PE-LD |
15-20 |
600 |
150-450 |
|
PE-HD |
25-32 |
600-900 |
700-1200 |