Comparison of single-layer and three-layer polyethylene pipes inside white
1. Hygiene and no fungi and algae growth inside the polyethylene triple layer pump Polyethylene materials are sensitive to high ambient temperatures and sunlight, so long-term exposure will destroy these materials. Therefore, in order to protect polyethylene pipes from the ultraviolet rays of sunlight, an ideal proportion of carbon-containing raw materials is added to these materials. Since one extruder is involved in the production of single-layer pipes, the carbon black needed to protect the pipe from the sun is present throughout the thickness of the pipe. This situation not only reduces the mechanical properties of the pipe, but also pollutes the water inside the pipe due to the presence of volatile substances in black pigments. Due to the fact that only the outer surface of the pipes needs to be protected from ultraviolet rays, only the outer layer of the three-layer pipes contains black pigments or pigments containing antioxidants, and the middle layer does not come into contact with sunlight without producing any additive. In order to be healthy and also to take advantage of the composite property of the polymers in the inner layer, the main material titanium dioxide is used. This type prevents the growth of fungi and algae inside the pipes. In several articles, the stimulating properties of this layer have been examined.
2. Excellent weldability of three-layer polyethylene pipes. The carbon mass clumps formed in polyethylene pipes cause microcracks, and it is likely that these microcracks have the potential to shrink and form larger cracks. In fact, failure is achieved through the accumulation of microcracks. In three-layer polyethylene pipes, carbon black is only added in a thin outer layer and about 50% of the pipe thickness is the middle layer that does not contain additives. Therefore, since the middle layer is involved in the welding of polyethylene pipes in the weld surface, the weldability is very high. Check in these three layers of tubes.
3. Excellent Strength of Three-layer Polyethylene Pipe Three-layer polyethylene pipe has more strength than single-layer pipe. These differences are usually seen in tensile and hydrostatic tests. The amount of elongation results for the three-layer and single-layer tubes is shown in Figure 1
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