Why three-layer polyethylene pipes German specifications?
The use of new co-extrusion technology in the production of three-layer polyethylene pipes has many advantages, some of which we briefly mention:
1. Increase mechanical properties and creep strength.
The carbon block clusters formed in polyethylene cause microcracks, and these microcracks are likely to have the ability to shrink and form larger cracks. In this way, failure is achieved by the accumulation of microcracks. In fact, the presence of carbon block in the polyethylene structure causes failure in two ways: on the one hand by starting to leave more easily due to the stress concentration on the filler material and on the other hand by reducing the chain mobility due to the polymer-filler interactions.
Due to the three layers of this company's black wall polyethylene pipes, the carbon block is added only in a thin outer layer and about 50% of the pipe thickness (middle layer) no additives are added to the polyethylene and the mechanical properties are reduced and the weldability is not observed.
2. Improve weldability and weld strength.
Therefore, since the middle layer (without additives) in the welding of polyethylene pipes is included in the welding surface, very high weldability is one of the characteristics of this company's three-layer pipes.
3. Cleanliness and no growth of fungi and microorganisms inside the tube.
The inner layer of the Pasargad tri-layer tube is white in color and contains titanium dioxide.
Titanium dioxide has many benefits, including:
- Anti-UV sun protection
- Water purification and purification
– Ability to remove potential taste and odor in water
- Prevent the accumulation of germs and microorganisms
– Hydrophilic and self-cleaning properties
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