Description
The main reason for the widely used polyethylene geomembrane is its cost -effectiveness, providing the best relative performance while maintaining good economy. Polyethylene geomorphic membranes are mainly composed of HDPE (high -density polyethylene) and LLDPE (linear low -density polyethylene) geomellers. The resin of high -density polyethylene geomorphic membrane is actually MDPE (medium density polyethylene), but after adding charcoal black resistance to UV, the final density of the geomollars' membrane reaches the range of HDPE, which is also the reason for the high -density polyethylene geomorphic film. LLDPE was originally considered a low -pressure LDPE (low -pressure and low -density polyethylene). Compared with low -density polyethylene, linear low -density polyethylene is more heat -resistant, stronger, and better resisting environmental stress, which is due to the polymerization of ethylene and other substances (such as butane, hexane and alkane).
Specification
Thickness | 0.75 | 1.0 | 1.25 | 1.50 | 2.00 | 2.50 | 3.00 |
Density g/m2 | ≥0.94 | ≥0.94 | ≥0.94 | ≥0.94 | ≥0.94 | ≥0.94 | ≥0.94 |
Tensile yield strength (N/mm) | ≥11 | ≥15 | ≥18 | ≥22 | ≥29 | ≥37 | ≥44 |
Tensile breaking strength (N/mm) | ≥20 | ≥27 | ≥33 | ≥40 | ≥53 | ≥67 | ≥80 |
Bongation at yield(%) | ≥12 | ≥12 | ≥12 | ≥12 | ≥12 | ≥12 | ≥12 |
Elongation at break(%) | ≥700 | ≥700 | ≥700 | ≥700 | ≥700 | ≥700 | ≥700 |
Tear resistance(N) | ≥93 | ≥125 | ≥160 | ≥190 | ≥250 | ≥315 | ≥375 |
Puncture strength(N) | ≥240 | ≥320 | ≥400 | ≥480 | ≥640 | ≥800 | ≥960 |
Tensile load stress cracking | ≥300 | ≥300 | ≥300 | ≥300 | ≥300 | ≥300 | ≥300 |
Carbon black content(%) | 2.0-3.0 | 2.0-3.0 | 2.0-3.0 | 2.0-3.0 | 2.0-3.0 | 2.0-3.0 | 2.0-3. |
Features of Geomembrane
(1) Good anti -permeability. As a flexible waterproof material, the HDPE geomorphin film can reach 1 × 10-17cm/s.
(2) Have good temperature adaptability. High-density polyethylene geomorphic film has excellent heat resistance and cold resistance, can adapt to harsh environments such as high temperature and severe cold. Under the conditions of high temperature 110 ° C and -70 ° C, it can still be played normally. Give full play to its performance.
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