Krono Shhh .........Accoustic Underlay
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| TEST |
DETECTION BASED |
UNIT |
IXPE |
| Cell Structure |
- |
- |
Closed |
| Average diameter of cell |
- |
mm |
0.28 |
| Apparent density |
ASTM D 1817 |
kg/m3
|
66 (0.066g/cm3) |
| Thickness |
GB/T 6342-1996 |
mm |
2.00 |
| Thickness deviation |
GB/T 6342-1996 |
mm |
0.1 |
| Acid degree |
GB/T 1690-2006 |
% |
0 |
| Tensile strength |
ASTM D 412 |
Kpa
|
MD
TD |
950 (9.7kg f/cm3)
510 (5.2kg f/cm3) |
| Elongation |
ASTM D 412 |
% |
MD
TD |
280
175 |
| Tear strength |
ASTM D 624 |
N/m |
MD
TD |
4.1 x 103 (4.1kg f/cm)
3.0 x 103 (3.1kg f/ cm) |
| Elasticity |
GB/T 6670-2006 |
% |
16 |
| Compression set |
GB/T 2819-2006 |
% |
4.5 |
| Sound absorption co-efficient |
- |
Db |
IIC:68 FIIC:64 |
Dimensional change under heat
(22 hours Under 70 degrees celcius) |
JIS K 6767
|
% |
MD
TD |
-1.03
-0.30 |
| Water absorption |
ASTM D 570 |
kg/m2
|
2 |
| Repeat compression set |
QB/T 2819-2006 |
% |
4.0 |
