P o Box 11288 Abu Dhabi UAE Tel: 00971 (2) 5511440 (3-Lines) Fax: 00971 (2) 5513133 Mobile +97150‑6219966.
Physical and Chemical properties of expanded polystyrene foam
Property |
Test method |
Unit |
|
|||||
Moulded density |
DIN 53420 |
Kgm^3 |
15 |
20 |
25 |
30 |
35 |
40 |
Maximum permissible compressive |
DIN 53421 |
Kpa |
12-25 |
20-35 |
28-50 |
36-62 |
44-74 |
52-87 |
Stress at <2% compression |
|
|
|
|
|
|
|
|
Compressive stress at |
DIN 53421 |
Kpa |
65-110 |
100-160 |
140-120 |
180-255 |
225-305 |
265-350 |
10% compressive (l) |
|
|
|
|
|
|
|
|
Flexural strength (1) |
DIN 53423 |
Kpa |
160-210 |
240-300 |
325-400 |
410-490 |
490-590 |
580-680 |
Tensile strength (1) |
DIN 18164 |
Kpa |
150-230 |
225-325 |
260-415 |
375-510 |
450-600 |
530-700 |
Shear strength (1) |
DIN 53427 |
Kpa |
90-120 |
120-150 |
150-190 |
190-220 |
220-250 |
250-290 |
Average coefficient of linear |
DIN 53752 |
K-1 |
0.06X10-4 |
0.06X10-4 |
0. 06X 10-4 |
0.06X10-4 |
0.6X10-4 |
0.6X10-4 |
Expansion between 20 and 80 C |
|
|
|
|
|
|
|
|
Dimensional stability under heat, |
based on |
C |
95 |
95 |
95 |
95 |
95 |
95 |
short term |
DIN 53424 |
|
|
|
|
|
|
|
long term |
based on |
C |
85 |
85 |
85 |
85 |
85 |
85 |
under 5 kPa load |
DIN 18164 |
C |
80-85 |
80-85 |
80-85 |
80-85 |
80-85 |
80-85 |
under 20 kPa load |
|
-180-+85 |
-180-+85 |
-180_+85 |
-180_+85 |
-180_+85 |
-180-+85 |
-180_+85 |
in air |
|
Win-lKA |
0.032-0.036 |
0.031-0.036 |
0.0.0-0.034 |
0.029-0.033 |
0.029-0.033 |
0.029-0.033 |
Thermal conductivity with average |
DIN 52612 |
|
|
|
|
|
|
|
specimen temperature of 10 C |
|
|
|
|
|
|
|
|
Approximately water vapour |
DIN 53429 |
gd-lm-2** |
40 |
35 |
26 |
16 |
16 |
12 |
Permeability |
|
|
|
|
|
|
|
|
Water vapour diffusion |
DIN 4108 |
|
20-50 |
30-70 |
30-70 |
40-100 |
40-100 |
40-100 |
Resistance factors, (4) |
|
|
|
|
|
|
|
|
Typical water absorption |
DIN 53428 |
|
|
|
|
|
|
|
after immersion in water |
|
|
|
|
|
|
|
|
for 7 days |
|
Vol % |
3 |
2.3 |
2.2 |
2 |
1.9 |
1.8 |
for 1 year |
|
Vol % |
5 |
4 |
3.8 |
3.5 |
3.2 |
3 |