Analysis of the performance of ultra-high molecular polyethylene pipe (UHMW-PE)

Ultra High Molecular Weight Polyethylene (UHMW-PE) Product Features:

1, very high wear resistance

The ultra-high tube has a molecular weight of more than 2.5 million and a minimum wear index, which makes it extremely resistant to sliding friction. The wear resistance is 6.6 times higher than that of ordinary alloy steel and 27.3 times that of stainless steel. It is 17.9 times of phenolic resin, 6 times of nylon 6 and 4 times of polyethylene, which greatly improves the service life of pipes.

2, very high impact resistance


This product has the highest impact toughness value in existing engineering plastics, and many materials can crack, break, break or surface stress fatigue in severe or repeated explosions. This product is tested according to GB1843 standard for cantilever beam impact test without damage, and can withstand external force strong impact, internal overload and pressure fluctuation.


3, corrosion resistance

UHMW-PE is a saturated molecular group structure, so its chemical stability is extremely high. This product can withstand the attack of strong chemical substances, except for some strong acid which has slight corrosion at high temperature, in other alkali liquids and acid liquids. Not subject to corrosion. It can be applied in concentrated hydrochloric acid with a concentration of less than 80%, and the performance is quite stable in sulfuric acid having a concentration of less than 75% and nitric acid having a concentration of less than 20%.

4, good self-lubricating

This product contains a waxy substance and is well lubricated by itself. The coefficient of friction (196 N, 2 hours) is only 0.219 MN/m (GB 3960). Self-sliding performance is superior to oil-lubricated steel or brass. Especially in places with harsh environment, dust and sediment, the dry lubrication performance of this product is more fully displayed. It not only moves freely, but also protects related workpieces from wear or strain.

5, unique low temperature resistance


This product has excellent low temperature resistance, and its impact resistance and wear resistance are basically unchanged at minus 269 degrees Celsius. It is currently the only engineering plastic that can work at temperatures close to absolute zero. At the same time, this product has a wide temperature range and can work at temperatures from -269 ° C to 80 ° C for a long time.

This product has excellent low temperature resistance, and its impact resistance and wear resistance are basically unchanged at minus 269 degrees Celsius. It is currently the only engineering plastic that can work at temperatures close to absolute zero. At the same time, this product has a wide temperature range and can work at temperatures from -269 ° C to 80 ° C for a long time.


6, not easy to fouling

Due to its low friction coefficient and non-polarity, this product has good surface non-adhesion and high pipe finish. Existing materials are generally scaled in media with a pH of 9 or higher, and this product does not scale. This property is of great significance for the use of thermal power plants for the discharge of fly ash systems. It is also very suitable for pipelines such as crude oil and mud.

7. Long life chain There are few unsaturated genes in the molecular chain, the fatigue resistance is more than 500,000 times, the environmental stress cracking resistance is the best, the environmental stress cracking is >4000h, which is more than twice that of PE100, and it is buried for 50 years or so. Can maintain more than 70% mechanical properties.

8, easy to install


The ultra-high molecular weight polyethylene (UHMW----PE) pipeline unit has a specific gravity of only one-eighth of the weight of the steel pipe, which makes loading, unloading, transportation and installation more convenient, and can reduce the labor intensity of workers. UHMW-PE pipeline It has strong anti-aging properties and is not easy to age in 50 years. Whether it is erected on the ground or buried underground. Whether it is welding or flange connection during installation, it is safe, reliable, fast and convenient, no need for anti-corrosion, labor saving and labor-saving, fully demonstrating the superiority of using energy-saving, environmental protection, economy and high efficiency of ultra-high molecular weight polyethylene pipeline.

The ultra-high molecular weight polyethylene (UHMW----PE) pipeline unit has a specific gravity of only one-eighth of the weight of the steel pipe, which makes loading, unloading, transportation and installation more convenient, and can reduce the labor intensity of workers. UHMW-PE pipeline It has strong anti-aging properties and is not easy to age in 50 years. Whether it is erected on the ground or buried underground. Whether it is welding or flange connection during installation, it is safe, reliable, fast and convenient, no need for anti-corrosion, labor saving and labor-saving, fully demonstrating the superiority of using energy-saving, environmental protection, economy and high efficiency of ultra-high molecular weight polyethylene pipeline.

9, other characteristics

This product also has outstanding characteristics such as energy absorption, noise absorption, antistatic, shielding ability to electrons, no water absorption, light specific gravity, easy machining, and coloring.

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