What are the characteristics of anti-seepage membranes

The efficacy of anti-seepage membranes in petrochemical plants

When petrochemical plants are transporting, processing and storing oil products, it is inevitable that some water seepage will occur. If safety protection measures are not taken in time, it will immediately cause the oil products of the chemical plants to seep into the soil and be injected into the ocean through surface water, polluting water resources and causing pollution on land and in the deep sea. To protect the ecological environment, it is necessary to address the root cause. Anti-seepage membranes have an irreplaceable role in controlling oil seepage. Geomembrane engineering is simple, convenient, fast, lightweight and easy to transport, and can meet the requirements of different construction sites.

The efficacy of anti-seepage membranes in petrochemical plants

The anti-seepage membrane, as an anti-seepage material in oilfield areas, has the following characteristics:

High anti-seepage index

It is made of high-quality polyethylene plastic as raw material, featuring a high-efficiency molecular structure relative density, low liquid hydrophilicity, and an anti-seepage effect that is incomparable to ordinary waterproof coatings.

Strong tensile reflectivity:

Its excellent deformation capacity and ductility make it highly suitable for expanding or contracting the reference surface, which can effectively eliminate the uneven settlement of the base surface.

Organic chemical reliability

It is resistant to heat, corrosion, alkali, salt, asphalt and other organic chemical aqueous solutions. It is widely used in exothermic reaction tanks, garbage disposal sites, wastewater treatment and other natural environments.

Anti-aging performance:

It has excellent aging resistance, anti-decomposition ability, UV resistance, tear resistance and puncture resistance, with a service life of 50 to 70 years, providing an excellent material guarantee for the quality of engineering construction.

Thermal insulation:

The raw material is the original ecological epoxy resin, which does not cause harmful substances. The basic principle of anti-seepage is the general physical state change. It is a material for breeding, domestic water tanks and environmental protection.

Low cost and high economic benefits

The production process is more scientific, convenient and fast, so the production cost is lower than that of traditional waterproof coatings. It is calculated that it can save about 50% of the cost for engineering projects.

How to solve the aging resistance problem of geomembrane

Geomembranes are made of many different materials. Geomembranes made of high-quality HDPE have good corrosion resistance and excellent resistance to common strong oxidants and acid salts. The essence is the organic chemical plasticity of HDPE. The hazardous waste treatment site is stipulated to use HDPE geomembrane for anti-seepage. If the HDPE material used for manufacturing geomembranes is of poor quality or mixed with other materials, its performance will be greatly reduced. Together with other civil engineering materials, it constitutes the structural system software in the engineering project, in which it has the functions of enhancing structural reinforcement, drainage and drainage, and protection

It has functions such as protection and closed anti-seepage, and features outstanding engineering characteristics such as high compressive strength, low tensile strength, high corrosion resistance, excellent material sustainability and water stability.

Geomembranes are prone to dissolution and other reactions due to external forces and factors such as oxygen tanks, light and heat in the natural environment, which can lead to material embrittlement and damage or partial damage to properties such as compressive strength. The reasons for the embrittlement of geomembranes can be divided into two levels: internal causes and triggers. Internal causes refer to the modifiers and functions of the polymer itself, while triggers refer to the reduction in material properties caused by factors such as light, heat, and force during the application process.

Adding anti-aging agents, anti-aging agents generally work in the following aspects:

(1) Reduce the sensitivity of the material to solar thermal power generation, and avoid the generation of encouraged parts and the formation of mineral acid groups in the polymer;

(2) Capture the already formed mineral acid groups to prevent them from causing chain reactions or stopping the reactions.

(3) Decompose the hydrogen peroxide chemical substances that have already been formed;

(4) Passivate the metallic cadmium present in the polymer.

The corresponding anti-aging agents include ultraviolet shielding agents, heat stabilizers, ultraviolet absorbers, kinetic energy quenchers, metal material passivators and anti-fogging agents, etc. This kind of anti-aging agent is generally not used alone but is applied to different material compositions, which has long become the basic way to prevent material embrittlement.

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