The composite geomembrane (composite anti-seepage film) is divided into a film of HDPE geomembrane and two fabrics, with a width of 4-6m. The "Hongchen" composite geomembrane is tensile, tear-resistant, bursting, etc., physical mechanics The performance index is high, the product has high strength, good extension performance, large deformation modulus, acid and alkali resistance, corrosion resistance, aging resistance and good anti-seepage performance. It can meet the needs of civil engineering such as anti-seepage, isolation, reinforcement, anti-cracking and reinforcement in water conservancy, municipal, construction, transportation, subway, tunnel and engineering construction. Hongchen composite geomembrane can be used in unconventional temperature environment because it uses polymer materials and anti-aging agent is added to the production process. It is often used for anti-seepage treatment of dams and drainage ditches, as well as anti-fouling treatment of waste yards. Nowadays, the composite geomembrane anti-seepage construction technology has been widely promoted. Geomembrane welding is the most important in the construction process. Based on years of on-site construction experience, our company has concluded that it is not suitable for welding in geomembrane welding construction. The joints are cemented, and the welding method is as follows:
I. Preparation before laying 1. Foundation treatment: cleaning the geomembrane laying surface, requiring basic leveling, solid soil, no unevenness, cracks, etc. There should be no sharp objects, stones, iron wire, wooden sticks, etc. The turf and roots in the anti-seepage range should be removed, and the herbicide should be sprayed on the weeds.
2. With the membrane contact surface, a sand or clay layer with a small particle size is laid as a protective layer, and the thickness of the protective layer is not less than 30 cm.
2. Construction and welding of composite geomembrane 1. Splicing composite geomembrane welding and splicing of composite geomembrane is carried out by the construction workers with rich experience in “Hongchen†construction. The welding equipment selects the automatic temperature-regulating geomembrane welding machine, and the auxiliary equipment is 700W hot air welding torch. After the first composite geomembrane is laid, the sides to be welded are overlapped ("Hongchen" composite geomembrane has been reserved for 20cm-25cm from the welded side when leaving the factory), and the second reverse is laid on the first film. . Adjust the edge of the two film welding edges so that the overlapping width is 10cm-15cm. For the welding of composite geomembrane and composite geomembrane (ie membrane and membrane), on-site welding test shall be carried out before welding to determine the welding temperature and walking speed of the welding machine. The control temperature of membrane and membrane welding is generally controlled at 300 °C-400. °C, the walking speed is generally 1.5-3m/min. At the same time, it is necessary to ensure the surface of the membrane is clean.
2. Quality control of composite geomembrane splicing (1) Composite geomembrane welding should be carried out in the weather without rain or strong wind. Construction workers should wear flat shoes or soft rubber shoes. It is strictly forbidden to wear spike shoes to avoid stepping on composite geomembrane. Welds should be inspected carefully, mainly to see if the two welds are clear and transparent, with or without bubbles, welds, melting points or weld runs.
(2) First select the area to be inspected, and the length of the weld of the test section is about 1.5m-3.0m. The two ends of the selected weld section to be inspected are sealed with a welding gun, and the pressure gauge is used. The gas cylinder clamps the gas needle, inserts the gas needle into the air passage of the weld to be inspected (only pierce the upper layer of the anti-seepage membrane, do not pierce the two layers), and the pressure is controlled according to the requirements of the geosynthetics test procedure at 0.5- 2Mpa, the time is around 30s. When you pump up, if the gas inside the weld is leaking with the gas needle, just plug the needle into the plasticine, hit the air, press it with your finger before the gas needle, observe for more than 30 seconds, and the pressure is not reduced. qualified.
(3) For unqualified welds, hot air welding guns should be used for repair welding vertical and T-slot treatment: vertical seams should not be spliced ​​too long, generally controlled at about 80cm, which increases with the progress of the project. T-slot treatment: According to the position of the T-slot, the splicing of each layer is first processed. Since the glue can not be repaired by the welding machine, the excess part can be cut off after each layer is glued, so that the glued T The seam forms a flat surface. After being bonded, it is double-sided patched for reinforcement according to the situation. If the composite geomembrane is damaged during the construction process, it should be repaired in time. Generally, the double-sided patch is applied by the adhesive method.
3. Control of construction strength of composite geomembrane In the construction process, vertical seam stitching and T-slit jointing speed are required to be greater than the filling speed of the dam; therefore, under the premise of ensuring quality, it is stable first and then fast. The pace of construction is carried out, and the speed is continuously increased to ensure the progress of the project.
Http://news.chinawj.com.cn Submission:
LED grow light with the COB packing technique being used,COB light source can save about 30% cost in the application, mainly lie in LED package cost,light engine production costs and the secondary light distributioncosts, which is great significance for applications and promotion of semiconductor lighting. Wecould also DIY the led ratio(wavelength ratio) which imitate the natural sun spectrum to help your plants grow in a very natural type of atmosphere, Absolutely, we are the very original and professional OEM/ODM factory, our lights have the great cost performance with the new integration technology being used for mass production, partners around the world keep telling us how amazed at the increase in output and the decrease in the energy bill.
Product Description
Lower Price for Better Light, Definitely Worth Having.
Applies our patent COB(chip on board) tech,which brings more centralized lights source to plants growing and with a better heat dissipation system of led Grow Light.Innovated grow light wavelength,full spectrum,which has the same efficiency as CREE CXB3070 make your plants get better light and grow better
Item Display
Key Features
Plug with listed certificate safe to use.
The Plug you can choose
Full Spectrum COB LED Grow Light PAR Value
Applications
Our professional full spectrum COB LED grow light are suitable for all the indoor plants and good for seeding, growth,flowering and fruiting stages of plants, increasing the harvest and Saving energy.
Our Ageing Test
Package
Cautions:
1.Do not use the lights in dripping water or anywhere where they will get wet, water and electricity can be a dangerous mixture
2. The working environment for the light is -20~40 degree celsius,45%RH~90%RH.
3. To protect the light, Plz cut off the power when there is a lightning strike.
4. Don`t touch or move when the light working.
Suggestions:
1.Clean the dust inside every 6 months to ensure the good heat dissipation and long life time.
2.Don`t keep too short distance to the plant canopy to avert leaves bleaching.
3. Highly hang the lamp will weaken the energy and affect the growth cycle of the plants, so the lamp should not be hang too high.
4. While taking care of the plants, please spray the leaves and branches 2-3 times everyday, to ensure the plants do not wrinkle a wither, and have no phenomenon of few fruit, and hard pericarp
Warranty
1.3years Manufacturer's Warranty for defective items within 3 years
2.We will guide you to fix it if gets small problems within 3 years
3.We will send you new items if the products are totally broken since technical or quality matters within 3 years
4.Retun and Refund: we provide 30days no question item return,we will refund all your money after we get the item,and we both provide 50% of the return shipping fee.
Philizon have over 6 years' experience in designing and manufacturing led grow lights. Persuiting to offer the best COB LED grow lights for plants growth, we cooperate with the scientific research institutes and the Academies of Agricultural Sciences in USA, Australia Canada, UK and so on.A great number of commercial plant growers test the lights, and their feedbacks show that this lamp owns a lot of 640nm,660nm and 740nm lights, which gives the plants enough nutrient in the flowering and fruiting phase and bring a far higher yield than other LED Grow Lights in the market.
COB LED Grow Light,COB LED Grow Lights,COB Grow Light,LED COB Grow Light
Shenzhen Phlizon Technology Co.,Ltd. , https://www.szledaquariumlighting.com