What to pay attention to when using HDPE geomembrane in summer?
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Geomembranes have a tendency to replace traditional earth and stone embankments and dams as impermeable bodies, such as clay core walls and clay sloping walls. The impermeability of geomembranes depends on the integrity of the plastic film during construction and operation. In order to prevent trampling by animals and humans, damage by plants and animals, and to reduce the effect of heat and light, the composite geomembranes should be covered with a protective layer to avoid direct sunlight because they are polymeric chemical fiber polymers. The particle diameter of the protective layer should not be too large, otherwise it will puncture the composite geomembrane, and the particle diameter size of the protective layer should be approximated according to the following formula.
Incident light or geomembrane synthetic material surface is reflected, or scattered, by the geomembrane synthetic material body is absorbed, and can be with cause photo-oxidative aging is only that part of the light can be effectively absorbed. The absorption of light is carried out in a way that a molecule absorbs a quantity of light, and thus the ultraviolet energy in sunlight has constituted the cutting off of many molecular chains of high-accumulation substances or caused a photo-oxidation reaction to occur.
Geomembrane synthetics are exposed to sunlight and their light-absorbing groups are excited to generate free radicals. This is related to the energy of the light and the structure of the geomembrane synthesis material as well as some impurities in the polymer, which is oxidized at the same time if oxygen is present (photo-oxidation). Moreover, the thermal oxidation process may be superimposed on the photo-oxidation process. The total process is usually considered as a photo-thermal oxidation process, and its oxidation reaction mechanism is similar to that of thermal oxidation.
HDPE geomembrane liners, as a new type of material, has excellent anti-seepage and anti-corrosion properties, good chemical stability, and can be processed according to the actual engineering needs of the properties and functions, HDPE geomembrane has been widely used in water conservancy projects of embankments, dams and reservoirs, while HDPE geomembrane is also used as anti-seepage, anti-corrosion, leak-proof and moisture-proof materials in channels, cisterns, sewage ponds, swimming pools, housing buildings, underground buildings, landfills, environmental engineering, etc.
BENEFITS OF HDPE GEOMEMBRANE
The most chemically resistant member of the polyethylene family due to its dense configuration.
Field welded with hot wedge welders and extrusion welders. These factory quality welds are virtually stronger than the sheet itself.
The best QC-QA testing capabilities in the marketplace.
No need to cover the liner because it is UV stable = cost-effective.
Available in roll stock and come in varying thicknesses ranging from 20 to 120 mil depending on your requirements.
HDPE geomembrane summer chemical reaction is more frequent, especially in the case of day and night alternation temperature difference is relatively large, geomembrane in the laying should pay attention to HDPE geomembrane do protection work, the main attention to the following points:
1. Do not pull the product, because the summer geomembrane is relatively soft, easy to tear.
2. Geomembrane should not be in contact with sharp things, once punctured, it will be particularly difficult to repair.
3. HDPE geomembrane should pay attention to sun protection, after laying, such as not immediately mulch, need to cover with insulation material for sun protection.