ATMIS Hollow EPP has unique hollow cylindrical structure,and it allows many irregular holes inside the molded part.
While being lighter than regular EPP , it also has excellent air permeability and sound absorption performance.
|
Physical properties |
Test method |
Hollow EPP |
Flame Retardant EPP |
Regular EPP |
|
|
Density/(g/L) |
/ |
26 |
26 |
26 |
|
|
Tensile Strength/kpa |
GB/T 6344 |
387 |
485 |
420 |
|
|
Tensile Elongation/% |
31 |
36 |
43 |
||
|
Compression Stress/kpa |
10% strain |
GB/T 8813 |
117 |
99 |
91 |
|
25% strain |
156 |
149 |
120 |
||
|
50% strain |
257 |
217 |
206 |
||
|
75% strain |
491 |
481 |
419 |
||
|
Flammability/(mm/min) |
GB/T 8410 |
Self-extinguishing in 15s |
75-80 |
85-90 |
|
|
1.0L sample/g |
/ |
27 |
33 |
32 |
|
|
60mm sample block sound absorption |
GB/T 18696.2 |
0.7 |
0.1 |
0.1 |
|
|
Molding pressure/bar |
/ |
1.8-2.2 |
2.8-3.2 |
2.2-2.6 |
|
Note:The above is the typical value from laboratory.