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Differences between HDPE geomembrane and PVC film

Release time:

2024-11-05

There are significant differences between HDPE geomembrane and PVC membrane in terms of material composition, performance characteristics and application scenarios. The choice of material depends on specific engineering requirements and environmental conditions.

Material composition

1. HDPE geomembrane: a waterproof barrier material produced with (medium) high-density polyethylene resin as raw material, also known as high-density polyethylene film, HDPE anti-seepage film. HDPE is a highly crystalline, non-polar thermoplastic resin. The original HDPE is milky white in appearance and is translucent to a certain extent in thin cross-sections.

2. PVC film: made of polyvinyl chloride resin and other modifiers through calendering or blow molding. The general thickness is 0.08~0.2mm, and those greater than 0.25mm are called PVC sheets. The essence of PVC film is a vacuum blister film, which is used for surface packaging of various panels, so it is also called decorative film and adhesive film.

Performance characteristics

HDPE geomembrane:

1. It has excellent resistance to environmental stress cracking, resistance to low temperature, anti-aging, corrosion resistance, as well as a large operating temperature range (-60~+60℃) and a long service life (50 years).
2. It is a flexible waterproof material with a high anti-seepage coefficient (1×10^-17cm/s).
3. It has good heat resistance and cold resistance, and the operating environment temperature is high temperature 110℃ and low temperature -70℃.
4. It has good chemical stability and can resist corrosion from strong acids, alkalis, and oils. It is a good anti-corrosion material.
5. It has high tensile strength and can meet the needs of high-standard engineering projects.
6. It has strong weather resistance and can be used naked for a long time while maintaining its original performance.

PVC film:

1. It is insoluble in water, alcohol, and gasoline, and can swell or dissolve in ether, ketones, chlorinated aliphatic hydrocarbons, and aromatic hydrocarbons.
2. At room temperature, it is resistant to concentrated hydrochloric acid, 90% sulfuric acid, 50%~60% nitric acid, and caustic soda solution below 20%.
3. According to different production processes, it can be divided into plasticized PVC film (soft PVC film) and unplasticized PVC film (hard PVC film). Among them, hard PVC film has good flexibility, is easy to shape, is not brittle, non-toxic and pollution-free, and has a long shelf life.

Application scenarios

1. HDPE geomembrane:
It is widely used in anti-seepage projects such as domestic waste landfill anti-seepage, solid waste landfill anti-seepage, sewage treatment plant anti-seepage, artificial lake anti-seepage, tailings treatment, etc.
It can also be used in reservoirs, dams, environmental protection projects (such as landfills), subways, underground projects of buildings, etc. where anti-seepage is required.

2. PVC film:
① Building materials industry: It is the surface packaging material of various panels.
② Packaging industry: It is used for luggage adhesive tape, logo adhesive tape, advertising stickers, pipeline adhesive tape, etc.
③ Daily life: It is used in footwear, toys, raincoats, tablecloths, umbrellas, agricultural films, etc. Among them, PVC greenhouse film can be used as the outer covering material of greenhouses, greenhouses and small and medium-sized greenhouses. According to its characteristics, it can also be divided into ordinary PVC greenhouse film, PVC anti-aging film, PVC Decorative material (with both anti-aging and dripping characteristics), PVC weather-resistant and drip-free dustproof film, etc.

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PROJECT CASES

Aquaculture

In the aquaculture industry, geosynthetics such as Huaxiang geomembranes and geotextiles can be used to create healthy aquaculture ponds, ensure stable water quality and reduce water resource consumption. All geosynthetics provided by Huaxiang can be customized according to customer needs.

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Landfill

Huaxiang Factory provides customers with high-standard geosynthetics to meet their needs for building landfills.

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Mining

Huaxiang geosynthetics are widely used in mining projects and have a long service life. Product specifications are customized according to customer needs, and customers are very welcome to visit our factory.

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Agriculture

In agricultural irrigation and biogas digester scenarios, geosynthetics such as geomembranes and geotextiles play a key role due to their respective characteristics. The products provided by Huaxiang Factory meet the standards and can be customized according to requirements.

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Road Construction

The geosynthetics such as geomembranes, geotextiles, geogrids, geocells, etc. provided by Huaxiang play an irreplaceable role from roadbed treatment to pavement protection, from drainage systems to environmental protection isolation.

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Slope Protection

The application of geosynthetics in mining runs through every link from mine construction to tailings treatment, waste rock dump management and slope protection, playing an indispensable role in improving mining production safety, reducing environmental pollution and ensuring sustainable development of resources.

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Ditch Construction

In the field of canal and canal construction and maintenance, geosynthetics have made important contributions to the efficient operation of water conservancy projects, the rational use of water resources, and the improvement of project durability through their unique functions.

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Coastal Engineering

In coastal engineering, geosynthetics such as Huaxiang geobags, cement blankets, and geogrids play an important role in coastal engineering from coastal protection, structural reinforcement to slope stability, and effectively respond to the challenges brought by the complex geology and environment of coastal areas.

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