China Polyethylene Sheet HDPE/LDPE/LLDPE HDPE, Find details about China Dam Liner, Geomembrane from Polyethylene Sheet HDPE/LDPE/LLDPE HDPE
Technical specifications of HDPE geomembrane:
a) Density ≥ 0.94g/m²
b) Tensile Strength ≥25Mpa
c) Elongation at Break ≥ 550%
d) Right-angled Tear ≥ 110N/mm
e.)Puncture Strength ≥ 550N
f.) Permeability Coefficient ≤1.0xe-13g.cm/(cm2.S.Pa)
g.) -70oC Low Temperature Impact Brittle Property: good.
h.) Chemical Resistance: at 80oC, marinated in 5g/L Nacl for a long time, it will not erode or swell.
And geomembranes are manufactured to meet or exceed the test values. Can meet the GRI GM13 /GM17 specification which was established by Geomembrane Research Institute (GRI), USA. The frequency of testing & functional requirements of the GRI GM13 /GM17 specification which was established by Geomembrane Research Institute (GRI), USA.
The Technical of HDPE geomembrane
No. | Item | Test Value | ||||||
0.75mm | 1.0 mm | 1.25 mm | 1.5 mm | 2.0 mm | 2.5 mm | 3.0mm | ||
1 | Minimum Density(g/cm³) | 0.939 | ||||||
2 | Tensile Property | |||||||
Strength at yield,N/mm | 11 | 15 | 18 | 22 | 29 | 37 | 44 | |
Strength at break ,N/mm | 20 | 27 | 33 | 40 | 53 | 67 | 80 | |
Elongation at yield,% | 12 | |||||||
Elongation at break,% | 700 | |||||||
3 | Tear Resistance N | 93 | 125 | 156 | 187 | 249 | 311 | 374 |
4 | Puncture Resistance N | 240 | 320 | 400 | 480 | 640 | 800 | 960 |
5 | Stress Crack Resistance, hrs | 300 | ||||||
6 | Carbon Black Content, % | 2.0-3.0 | ||||||
Carbon Black Dispersion | 1 or 2 | |||||||
7 | Standard OTI Min | 100 | ||||||
High Pressure OTI Min | 400 | |||||||
8 | Impact Cold Crack at -70°C | Pass | ||||||
9 | Water vapor permeability (g.cm/cm2 .s.Pa) | ≤1.0×10-13 | ||||||
10 | Dimensional Stability (%) | ±2 |