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From [Institution name]
| Properties |
Requirements |
Results |
||
|---|---|---|---|---|
| Black membrane |
Brown membrane |
|||
| Thickness (mm) |
Report |
0.635 |
0.635 |
|
| Weight (g/m2 ) |
≥ 500 |
732 |
640 |
|
| Impact load |
min. 12 of 15 must pass a rating of 3 |
15 of 15 passed |
15 of 15 passed |
|
| Static puncturing |
min. 5 of 6 must pass a rating of 3 |
6 of 6 passed |
6 of 6 passed |
|
| Cold bending |
No visible cracking |
No visible cracking |
No visible cracking |
|
| Water vapour permeance (ng/Pa·s·m2 ) |
≤ 37.2 |
4.66 |
4.29 |
|
| OriginalFootnote (1) |
tensile strength at yield (kN/m) |
≥ 8 |
13 |
15 |
| elongation at break (%) |
≥ 25 |
930 |
911 |
|
| Water immersionFootnote (1) |
tensile strength at yield (%) |
≥ 80 of original |
116 |
104 |
| elongation at break (%) |
≥ 70 of original |
105 |
94 |
|
| Heat agingFootnote (1) |
dimensional change (%) |
≤ ±1 |
0 |
0 |
| weight change (%) |
≤ 0.10 |
−0.06 |
−0.05 |
|
| tensile strength at yield (%) |
≥ 80 of original |
130 |
108 |
|
| elongation at break (%) |
≥ 70 of original |
105 |
107 |
|
| Chemical attack exposure (ammonium chloride) |
tensile strength at yield (%) |
≥ 80 of original |
107 |
98 |
| elongation at break (%) |
≥ 70 of original |
105 |
128 |
|
| Chemical attack exposure (sodium sulfate) |
tensile strength at yield (%) |
≥ 80 of original |
111 |
101 |
| elongation at break (%) |
≥ 70 of original |
105 |
128 |
|
| Compressive strength (kN/m2 ) |
≥ 100 |
335 |
290 |
|