What is the difference between agricultural pvc coated lay flat hose and pu coated lay flat hoseWhat is the difference between agricultural pvc coated lay flat hose and pu coated lay flat hose
Speaking of hoses, there are many other names for irrigation hoses, agricultural hoses, fire hoses, canvas hoses, etc. From the material point of view, they are generally divided into PVC lined hoses and PU polyurethane hoses.
These characteristics are also used in the PVC-lined hose. The biggest feature of PVC is flame retardancy, so it can be used for fire protection applications. The common fire hose is based on this principle. The advantage of the PVC liner is that it is soft and non-toxic at room temperature. , No odor, high pressure resistance, corrosion resistance, etc. Suitable for farmland irrigation, sewage drainage, urban water delivery, pumping, etc. The disadvantage is that the pressure is small. If it is a large-scale pressure equipment, it is generally not recommended, depending on the pressure of the equipment.
The abbreviation of polyurethane is PU, which is formed by the polymerization of isocyanate (monomer) and hydroxyl compound. Because it contains a strong polar urethane group, it is insoluble in non-polar groups, and has good oil resistance and toughness. Abrasion resistance, aging resistance and adhesion can be prepared with different raw materials to adapt to a wide temperature range (-50 ~ 150C) materials include elastomers, thermoplastic resins and thermosetting resins. It is not resistant to hydrolysis at high temperatures, nor to alkaline media.
Based on its characteristics, the polyurethane-lined hose has a transparent shape, no impurities, light weight, good flexibility, bright color and smooth coating, a semi-easy roll, easy movement, unlimited length, and can keep the hose soft and elastic at low temperatures; High pressure resistance, anti-corrosion, anti-ultraviolet, abrasion and aging resistance, etc., suitable for various fields of large-scale sprinkler irrigation equipment mining engineering.
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Polyurethane lined hose is currently the most ideal water-saving irrigation tool in China. Because of its lightness, wear resistance and other characteristics, it is deeply loved by the majority of users and has occupied a place in the hose industry.