Year1
- 规格：
- 0.3-3.0mm
- 卷长：
- 50-100米
- 幅宽：
- 4-6米
Price of Manager Zhao Ouchi anti-seepage membrane
The standard name of anti-seepage membrane is polyethylene geomembrane, which is mainly made of milky white translucent to opaque thermoplastic resin material polyethylene resin. Polyethylene is a high molecular polymer, which is a non-toxic, tasteless and odorless white particle with a melting point of approximately ℃. The relative density permeable film has good heat resistance and cold resistance. Good chemical stability, high rigidity and toughness, good mechanical strength, environmental stress cracking resistance and tear resistance. As the density increases, the mechanical properties and barrier properties will increase accordingly, heat resistance, and tensile strength. The strength is also higher and it can resist corrosion such as acids, alkalis, and organic solvents.
Characteristics of anti-seepage membrane
High anti-seepage coefficient The anti-seepage membrane has an anti-seepage effect that is unmatched by ordinary waterproof materials. The anti-seepage membrane has high tensile resistance and mechanical properties. Its excellent elasticity and deformation ability make it It is very suitable for expansion or contraction of the base surface, and can effectively overcome the uneven settlement of the base surface. It has a high water vapor permeability coefficient and chemical stability. The anti-seepage membrane has excellent chemical stability and is widely used in sewage treatment. Chemical reaction pools, landfills. Resistant to high and low temperatures, resistant to asphalt, oil and tar, resistant to acid, alkali, salt and other strong acid and alkali chemical media corrosion
, aging resistance The anti-seepage film has excellent anti-aging, anti-ultraviolet, and anti-decomposition capabilities, and can When used naked, the material has a service life of up to 10 years, providing a good material guarantee for environmental anti-seepage
. The anti-seepage film against plant roots has excellent puncture resistance and can resist most plant roots
and high mechanical strength. The anti-seepage membrane has good mechanical strength, tensile strength at break, elongation at break
, low cost and high efficiency. The anti-seepage membrane uses new technology to improve the anti-seepage effect, but the production process is more scientific and faster, so the product cost is reduced. It is lower than traditional waterproofing materials. According to actual calculations, general projects using anti-seepage membranes will save about cost
and the construction speed is fast. Anti-seepage membranes are highly flexible and have a variety of specifications and laying forms to meet the needs of different engineering waterproofing projects. According to the seepage requirements, hot melt welding is used, the weld strength is high, the construction is convenient, fast and healthy
Environmentally friendly and non-toxic The materials used in the anti-seepage membrane are all non-toxic and environmentally friendly materials. The anti-seepage principle is an ordinary physical change and does not produce any Hazardous substances, it is the best choice for environmental protection, breeding and drinking water pools
Welding of anti-seepage membrane
The welding process of wedge welding machine is divided into adjusting pressure, setting temperature, setting speed, weld overlap, inspection and installation of membrane Insert the machine and start the motor for pressure welding.
There should be no oil or dust in the joints, and the overlapping section of the geomembrane should not be filled with sediment and other debris. If there is any debris, it must be cleaned before welding.
At the beginning of day welding, a sample must be trial welded on site first, with the overlap width not less than Pressure and temperature are used for welding. The date, time and ambient temperature must be marked on the sample. During the welding process of the hot wedge welding machine, you need to pay attention to the operation of the welding machine at all times, and fine-tune the speed and temperature according to the actual conditions on site.
The seams must be neat and beautiful, and there must be no slip welding or skipping.
When the length of the geomembrane is not enough, long-term splicing is required. The transverse welds should be welded first, and then the longitudinal seams. The distance between the transverse welds should be larger than the should be, and they should not cross.
The welds of adjacent geomembranes should be staggered and overlapped as much as possible. The nodes formed between the membrane blocks should be in a font shape and minimize the cross shape. An extrusion welding machine should be used to strengthen the intersection of the longitudinal die welds.
It is not allowed to press out dead folds when laying the geomembrane. When laying the geomembrane, the amount of expansion and contraction caused by temperature changes should be reserved according to the local temperature change range and the performance requirements of the geomembrane.
When the temperature of the portable welding machine indicated by the temperature control of the portable welding machine is lower than ℃, it should be wiped off with a clean cloth or cotton gauze before welding. It should be re-polished if necessary. Do not wipe it with your hands.
When the joints are affected by condensation, moisture, sediment, etc., they must be treated before welding.
Welding cannot be performed during rainy periods or when the joints are exposed to moisture, dew, or heavy sand, unless protective measures are taken.
When the temperature is lower than ℃, no construction should be carried out according to the specification requirements. If construction is necessary, the welding machine should be preheated before welding.
During the welding process of the pressure welding machine, the slider of the gun head should be checked frequently. If the wear is serious, the slider should be replaced in time to avoid damaging the membrane surface.
When welding industrial membranes, a generator with good voltage stabilization performance should be used for power supply. In special circumstances, a voltage stabilizer must be used when local electricity is used.
Construction method of anti-seepage membrane
It should extend from the bottom to the high position. Do not pull it too tightly. There should be enough margin to prepare for local sinking and stretching. Taking into account the actual situation of this project, the side slopes should be laid in order from top to bottom
. The longitudinal joints of two adjacent panels should not be on a horizontal line, but should be staggered from each other
. The longitudinal joints should be at a distance of The dam feet and bent feet should be located on a flat surface
, first on the side slope and then on the field bottom
. When laying on the side slope, the direction of membrane expansion should be basically parallel to the maximum slope line.
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