HDPE Geomembrana
1. Super anti-seepage performance: Made of high-density polyethylene material with a dense molecular structure, it can effectively block moisture and liquid infiltration, with an extremely low anti-seepage coefficient, suitable for projects with strict anti-seepage requirements such as landfills and reservoirs.
2. Excellent weather resistance and corrosion resistance: It can withstand temperature changes from -60 ℃ to 80 ℃, has strong resistance to UV aging, and can resist chemical substances such as acid and alkali, organic solvents, etc. Its service life is over 50 years.
3. High strength and easy construction: high tensile strength, strong puncture resistance, and can adapt to base deformation; The material is lightweight and has good flexibility, making welding construction convenient. The joint strength can reach more than 80% of the base material strength, and the construction efficiency is high.
4. Environmentally friendly and cost-effective: The raw materials are non-toxic and harmless, meet environmental standards, and can be recycled.
Products Introduction：
HDPE geomembrana is a flexible waterproof material made mainly from high-density polyethylene through blow molding or rolling processes. It combines excellent flexibility and mechanical strength through special molecular structure design, and can form continuous and complete anti-seepage barriers in various complex environments. It is a key material for anti-seepage, isolation, reinforcement and other aspects in modern civil engineering.
Product Features：
1. Excellent anti-seepage performance: The molecules are tightly arranged, and the anti-seepage coefficient is extremely low, which can effectively prevent the infiltration of moisture, sewage, chemical liquids, etc., ensuring the water quality safety and structural stability of the engineering area.
2. Strong weather and corrosion resistance: It can maintain stable performance in the temperature range of -60 ℃ to 80 ℃, resist UV radiation aging, and resist the erosion of various chemical substances such as acid, alkali, salt, organic solvents, etc., extending the service life of the project.
3. Excellent mechanical properties: It has high tensile strength and puncture resistance, can adapt to uneven settlement and deformation of the base layer, is not easily damaged during construction and use, and ensures the safety of the project.
4. Convenient and efficient construction: The material is lightweight and flexible, and can be cut and spliced according to engineering needs. It is connected by hot melt welding and other methods, with high joint strength and construction efficiency, which can effectively shorten the construction period.
5. Environmentally friendly and cost-effective: The raw materials are non-toxic and harmless, meet environmental standards, and can be recycled and reused; Compared with traditional anti-seepage materials, the comprehensive cost is lower, the later maintenance is simple, and it can significantly reduce the total investment of the project.
Product Parameters：
Metric | ASTM | unit | Test value | Minimum test frequency | ||||||
test method | 0.75 mm | 1.00 mm | 1.25 mm | 1.50 mm | 2.00 mm | 2.50mm | 3.00 mm | |||
Minimum average thickness | D5199 | mm | 0.75 | 1 | 1.25 | 1.5 | 2 | 2.5 | 3 | Per volume |
Minimum value (any one of 10) | -10% | -10% | -10% | -10% | -10% | -10% | -10% | |||
minimum density | D 1505/D 792 | g/cm3 | 0.94 | 0.94 | 0.94 | 0.94 | 0.94 | 0.94 | 0.94 | 90,000 kg |
Minimum average tensile performance (1) | D638 Type IV | |||||||||
Breakage strength, | N/mm | 20 | 27 | 33 | 40 | 53 | 67 | 80 | 9,000 kg | |
yield strength | N/mm | 11 | 15 | 18 | 22 | 29 | 37 | 44 | ||
Strain extension, | % | 700 | 700 | 700 | 700 | 700 | 700 | 700 | ||
yield extension | % | 12 | 12 | 12 | 12 | 12 | 12 | 12 | ||
Minimum strength of right-angle tear | D 1004 | N | 93 | 125 | 156 | 187 | 249 | 311 | 374 | 20,000 kg |
Minimum puncture strength | D4833 | N | 240 | 320 | 400 | 480 | 640 | 800 | 960 | 20,000 kg |
Constant tensile load stress cracking (2) | D5397 | hour | 300 | 300 | 300 | 300 | 300 | 300 | 300 | Based on GRI GM-10 |
Carbon black content | D 1603(3) | % | 2.0-3.0 | 2.0-3.0 | 2.0-3.0 | 2.0-3.0 | 2.0-3.0 | 2.0-3.0 | 2.0-3.0 | 9,000 kg |
Carbon black dispersion | D5596 | Note (4) | Note (4) | Note (4) | Note (4) | Note (4) | Note (4) | Note (4) | 20,000 kg | |
Oxygen induction time (OIT) (5) | 90,000 kg | |||||||||
(a) Standard OIT | D3895 | minute | 100 | 100 | 100 | 100 | 100 | 100 | 100 | |
（b） high-handed OIT | D5885 | minute | 400 | 400 | 400 | 400 | 400 | 400 | 400 | |
85℃ Oven aging (minimum average) (5)(6) | Per formula | |||||||||
(A) Standard OIT is retained after 90 days | D 5721 | % | 55 | 55 | 55 | 55 | 55 | 55 | 55 | |
(B) High voltage OIT is retained for 90 days | D 3895 D5885 | % | 80 | 80 | 80 | 80 | 80 | 80 | 80 | |
Ultraviolet resistance (7) | Per formula | |||||||||
（a） standard OIT | D3895 | Note (8) 50 | ||||||||
(b) Retention of high pressure OIT after 1600 hours (9) | D5885 | % | ||||||||
Product Applications：
1. Environmental protection engineering: used in landfills to isolate garbage from surrounding soil and groundwater, preventing leachate from polluting the environment; As an anti-seepage layer in sewage treatment plants, it prevents sewage leakage.
2. Water conservancy engineering: suitable for anti-seepage treatment of reservoirs, dams, channels, etc., reducing water resource leakage and improving the efficiency of water conservancy engineering.
3. Transportation engineering: It plays a role in isolating and preventing seepage in the roadbed of highways and railways, preventing the rise of groundwater from affecting the stability of the roadbed; As a waterproof lining layer in tunnel engineering.
4. Mining engineering: used for anti-seepage of mining tailings ponds, preventing tailings liquid from infiltrating and polluting soil and groundwater.
5. Agricultural engineering: used in agricultural facilities such as reservoirs and irrigation channels to reduce water resource loss and improve agricultural water use efficiency.
HDPE geomembrana plays an important role in many engineering fields due to its excellent anti-seepage performance, outstanding weather and corrosion resistance, good mechanical properties, convenient construction methods, and environmentally friendly and economical characteristics. It not only ensures the quality and safety of the project, but also reduces the overall cost of the project. It is a high-quality geotechnical material that combines practicality and economy, providing reliable guarantees for the smooth implementation and long-term stable operation of various civil engineering projects.
