About Geomembrane/HDPE Geomembrane/pond liner
Geomembrane Basic Definition
1. Geomembrane is also called anti-seepage membrane, and its basic definition is as follows:
Polyethylene English name: Polyethylene or polythene, referred to as PE (hereinafter referred to as PE) is a milky white translucent to opaque thermoplastic resin. Polyethylene geomembrane is a high molecular polymer without D, tasteless, odorless white particles, the melting point is about 110 ℃ -130 ℃, the density is: 918-0.965g/cm3; smooth HDPE geomembrane has good heat resistance sex and cold tolerance. Double rough surface HDPE film 1.5mm HDPE geomembrane is used for landfill covering, covering construction chemical stability is good, HDPE smooth anti-seepage film has high rigidity and toughness, good mechanical strength, resistance to environmental stress cracking and tear resistance Good strength performance, high anti-seepage performance, with the increase of density, the mechanical properties and barrier properties of HDPE geomembrane will be relatively improved, heat resistance, and tensile strength are also higher; HDPE anti-seepage membrane can resist strong acid, strong alkali corrosion , oil salts, organic solvents, etc. HDPE geomembrane GH-2S type 1.5mm HDPE geomembrane is used in rainwater collection tank, and the test is qualified.
Classification of geomembrane
2. Classification of geomembrane
Definition of geomembrane:
⑴. Geomembrane is a waterproof and barrier material produced with high molecular polymer as the basic raw material.
⑵. Smooth geomembrane , a geomembrane with a flat, smooth appearance on both sides.
⑶. Textured geomembrane is a geomembrane with a uniform rough appearance on one or both sides produced by certain technological means.
⑷. High density polyethylene geomembrane high density polyethylene geomembrane, geomembrane produced from medium and high density polyethylene resin (PE-MD) or high density polyethylene resin (PE-HD), with a geomembrane density of 0.940g/cm3 or more .
⑸. Low density polyethylene geomembrane low density polyethylene geomembrane, geomembrane produced with density polyethylene resin (PE-LD), linear low density polyethylene resin (PE-LLD), ethylene copolymer and other raw materials, geomembrane density 0.939g/ cm3 or less. Double rough surface HDPE film 1.5mmHDPE geomembrane for landfill cover, cover construction
⑹ Linear low density polyethylene geomembrane is a geomembrane produced with linear low density polyethylene resin (PE-LLD) as raw material. The density of HDPE geomembrane is 0.939g/cm3 or less. HDPE anti-seepage membrane GH-1 type 1.5mm HDPE geomembrane for iron ore anti-seepage, certificate.
Conventional models of geomembrane and precautions for customization
Conventional models of geomembrane and precautions for customization
3. Conventional models of geomembrane and precautions for customization:
The quality of HDPE geomembrane products complies with American ASTM standard G13 and the national standard GB/T17643-2011 and CJ/T234-2006.
⑴. 2.0mmHDPE geomembrane:
Also known as 2mm thick HDPE geomembrane, anti-seepage membrane, smooth HDPE geomembrane, rough HDPE geomembrane;
The product is usually 6 meters wide × 30 meters long (roll) = 180 square meters; each square meter weighs about 1900 grams; each roll weighs 340 kilograms.
⑵. 1.5mmHDPE geomembrane:
Also known as 1.5mm thick HDPE geomembrane, anti-seepage membrane, smooth HDPE geomembrane, rough HDPE geomembrane;
The product is usually 6 meters wide x 50 meters long (roll) = 300 square meters; each square meter weighs about 1425 grams; each roll weighs 427 kilograms.
⑶. 1.0mmHDPE geomembrane:
Also known as 1.0mm thick HDPE geomembrane, anti-seepage membrane, smooth HDPE geomembrane, rough HDPE geomembrane;
The product is usually 6 meters wide × 50 meters long (roll) = 300 square meters; each square meter weighs about 950 grams; each roll weighs 285 kilograms.
⑷.0.75mm HDPE geomembrane:
Also known as 0.75mm thick HDPE geomembrane, anti-seepage membrane, smooth HDPE geomembrane, rough HDPE geomembrane;
The product is usually 6 meters wide × 50 meters long (roll) = 300 square meters; each square meter weighs about 712 grams; each roll weighs 213 kilograms.
⑸. 0.5mmHDPE geomembrane:
Also known as 0.5 mm thick HDPE geomembrane, anti-seepage membrane, smooth HDPE geomembrane, rough HDPE geomembrane;
The product is usually 6 meters wide × 50 meters long (roll) = 300 square meters; each square meter weighs about 475 grams; each roll weighs 142 kilograms.
[Tips] The thickness of the above products can be adjusted according to customer requirements, and the thickness of the products ranges from 0.2mm to 3.0mm;
[Tips] The width of the above products can be adjusted according to customer requirements, and the product width range is 0.5m-8m;
[Tips] The length of the above products can be adjusted according to customer requirements, and the length of the product ranges from 15m to 150m.
Intrinsic characteristics of geomembrane
4. Intrinsic characteristics of geomembrane:
(1). High tensile strength and good elasticity: HDPE geomembrane has high tensile strength and mechanical resistance, its excellent elasticity and strong deformation ability make it very suitable for expansion or contraction of the base surface, which can effectively overcome the unevenness of the base surface settlement.
(2). Good anti-seepage performance: HDPE anti-seepage film adopts high-density polyethylene virgin resin, which is made by co-extrusion technology, with high polymer density, extremely low liquid permeability, and good anti-penetration effect.
(3). Simple and convenient construction, light weight, and easy transportation: HDPE geomembrane is light in weight, and the finished product is rolled, which is convenient for on-site laying and has high flexibility to meet the needs of different construction sites.
(4). Excellent physical and chemical properties: HDPE impermeable membrane has anti-aging, anti-ultraviolet, excellent tear resistance, puncture resistance, low brittleness, small thermal deformation, good chemical stability, high and low temperature resistance, asphalt resistance, Oil and tar, acid, salt and other chemical solutions.
(5). Low cost and high comprehensive benefit: The smooth HDPE geomembrane adopts new technology to improve the anti-seepage effect, but the production process is more scientific and fast, so the product cost is lower than the traditional product membrane; according to the actual calculation, the HDPE anti-seepage membrane is used The general project cost savings of 42%.
(6). Health and environmental protection: The materials used in the HDPE smooth anti-seepage film are all D-free environmental protection materials. The anti-seepage principle is that ordinary physical changes do not produce any harmful substances. It is the choice of environmental protection and breeding.
Performance characteristics of geomembrane
5. The performance characteristics of geomembrane are as follows:
(1). Glossy HDPE geomembrane is a flexible waterproof material with a high anti-seepage coefficient (1×10-17 cm/s)
(2). HDPE anti-seepage film has good heat resistance and cold resistance, and its use environment temperature is high temperature 110 ℃; low temperature -70 ℃
(3). HDPE geomembrane has good chemical stability, can resist the corrosion of strong acid, alkali and oil, and is a good anti-corrosion material
(4). HDPE smooth anti-seepage film has high tensile strength, which makes it have high tensile strength and can meet the needs of high-standard engineering projects.
(5). HDP light mask has strong weather resistance, strong anti-aging performance, and can be used for a long time to maintain the original performance.
(6(. HDPE rough mask adopts three separate feeders, each layer of different ingredients can have unique properties, which improves the engineering S performance of HDPE geomembrane.
(7). The overall performance of HDPE geomembrane, HDPE geomembrane has strong tensile strength and elongation at break, so that HDPE geomembrane can be used in various harsh geological and climatic conditions. Adapt to uneven geological settlement and strong strain.
(8). The glossy HDPE anti-seepage film is made of virgin plastic and carbon black particles without any preservatives. HDPE has been used in my country to replace PVC as the raw material for food packaging bags and cling film. The "HDPE geomembrane" produced by our company has good engineering performance, Wide range of applications.
The application of HDPE geomembrane
6. The application fields of HDPE geomembrane are as follows:
(1). HDPE anti-seepage membrane is used in environmental protection, sanitation (domestic waste landfill anti-seepage and leachate collection and isolation filtration system, sewage treatment tank anti-seepage and soft foundation reinforcement, power plant regulating tank anti-seepage, industrial sewage tank anti-seepage, chemical industry Anti-seepage of sewage pool, anti-seepage and geotechnical reinforcement of hazardous solid waste landfill, anti-seepage of artificial wetland, anti-seepage membrane of sewage purification treatment system, isolation, reverse filtration, etc.)
(2). Smooth HDPE geomembrane is used in water conservancy projects (artificial lake anti-seepage, artificial river anti-seepage, geomembrane, HDPE geomembrane for reservoir basin anti-seepage and dam anti-seepage plugging, canal anti-seepage, diversion culvert anti-seepage seepage, slope protection; geotextiles are used for dam foundation reinforcement, drainage plates for groundwater drainage, drainage and pressure reduction, etc.)
(3). HDPE smooth anti-seepage membrane is used in municipal construction projects (drainage board tunnel drainage and reverse filtration, underground construction engineering drainage and pressure reduction, waterproof blanket, bentonite waterproof blanket, construction basement anti-seepage and artificial river anti-seepage, HDPE geomembrane planting roof anti-seepage Seepage, subway tunnel anti-seepage, roof garden anti-seepage and anti-plant root puncture damage, high-grade workshop and warehouse ground anti-seepage and moisture-proof, anti-corrosion lining of sewage pipes; external water diversion, pressure reduction and discharge, soft soil foundation reinforcement and drainage and other anti-seepage projects)
(4). Glossy HDPE anti-seepage membrane is used in garden landscape and greening projects (artificial lake anti-seepage, artificial lake revetment foundation reinforcement, water and gas conduction, artificial wetland anti-seepage, river anti-seepage, slope stabilization, dam reinforcement, water storage Anti-seepage of pools, anti-seepage of artificial lakes in golf courses, greening transformation of depressions, transformation of greening planting layers of saline-alkali land and gravel land, reinforcement of mountain slope protection, green lawn waterproof and moisture-proof, etc.)
(5). Petrochemical system (chemical sewage tank anti-seepage, refinery sewage tank anti-seepage, oil tank foundation anti-seepage, oil storage tank anti-seepage in gas station and oil refinery oil tank anti-seepage, chemical reaction tank anti-seepage, sedimentation anti-seepage , Pool printing and dyeing sewage pool anti-seepage isolation, electroplating pickling pool anti-seepage and anti-corrosion, pipeline lining, etc.)
(6). HDPE anti-seepage membrane is used in mining industry (anti-seepage in washing tank, anti-seepage in heap leaching tank, anti-seepage in ash yard, anti-seepage in dissolution tank, anti-seepage in sedimentation tank, anti-seepage in tailings yard, anti-seepage in sewage storage tank Wait)
(7). Road transportation facilities (foundation reinforcement of geogrid highways, geocell slope protection, drainage board, geotextile slope lining wall back ground water diversion and decompression, drainage board high-speed road rainwater drainage and drainage, to prevent tire Water floating system on the ground, anti-seepage and diversion of rainwater ditch on the inner side of mountain road; reinforcement of railway roadbed, reinforcement of anti-seepage and diversion under ballast, anti-seepage reinforcement of culverts and tunnels, groundwater diversion and circuit moisture-proof protection)
(8). HDPE geomembrane agriculture (reservoir anti-seepage, drinking water tank anti-seepage, reservoir anti-seepage, water diversion irrigation system anti-seepage)
(9). Food processing industry (anti-seepage of starch slurry tank, anti-seepage of orange water tank in sugar factory, anti-seepage of alcohol wastewater tank, anti-seepage of food sewage treatment tank)
(10). HDPE smooth anti-seepage membrane is used in animal husbandry (anti-seepage in breeding wastewater pond, anti-seepage in biogas tank, anti-seepage in oxidation pond,)
(11). Transportation facilities (moisture-proof reinforcement of frozen soil foundations of highways, anti-seepage and drainage of road surfaces, anti-seepage of drainage ditches, anti-seepage of tunnel works)
(12）. Glossy HDPE geomembrane is used in the salt industry (anti-seepage in crystallization ponds in salt fields, anti-seepage in salt film for drying salt, anti-seepage in brine ponds, film for drying salt, and salt stack thatch cover).
