Characteristics of ultra high molecular weight polyethylene shaped parts

1. Extremely high wear resistance The ultra-high tube has a molecular weight of more than 2 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 the ordinary alloy steel and 27.3 times that of the 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 the pipeline.
2, very high impact resistance Ultra-high molecular weight pipelines in the existing engineering plastics have the highest impact toughness value, many of the data will be cracked, damaged, broken or external stress fatigue in the impact of severe or repeated blasting. This product is tested according to GB1843 standard, and the cantilever beam impact test is carried out without damage. It can accept strong external impact, internal overload and pressure fluctuation.
3, corrosion resistance UHMW-PE is a full-fledged sub-group layout, so its chemical stability is extremely high, this product can withstand the erosion of strong chemical substances, in addition to some strong acid at the high temperature, there is fine corrosion, in other It is not corroded in lye or acid. It can be used in concentrated hydrochloric acid with a concentration of less than 80%. It is suitable for stability in a concentration of less than 75% sulfuric acid and a concentration of less than 20% nitric acid.
4, outstanding self-smoothness Because the ultra-high molecular weight polyethylene tube contains waxy substances, and it is very smooth and excellent. The coefficient of friction (196 N, 2 hours) is only 0.219 MN/m (GB 3960). The sliding function itself is superior to steel or brass that is smooth with oil. Especially in the local environment where the environment is harsh, dust, and mud, the dry and smooth function of this product is more abundant. Not only can it be moved freely, but the related workpieces are not worn or strained.
5. Common low-temperature resistance Ultra-high molecular weight polyethylene pipe has excellent low-temperature resistance, and its impact resistance and wear resistance are unchanged at minus 269 degrees Celsius. It is currently an engineering plastic that can only be operated at temperatures close to absolute zero. Together, the UHMWPE pipe has a wide temperature range and can be operated at temperatures ranging from -269 ° C to 80 ° C for a long time.
6. Non-fouling property Ultra-high molecular weight polyethylene pipe has excellent surface non-adhesion and high pipe finish because of its low friction coefficient and non-polarity. The existing data are usually scaled in a medium with a pH of 9 or higher, and the ultra-high molecular weight polyethylene tube does not scale. This property is of great significance for the use of a coal-fired power plant in a coal-fired power plant. It is also very suitable for transportation pipelines such as crude oil and mud.
7. Long-lived ultra-high molecular weight polyethylene molecular chain has less unsatisfactory genes, more than 500,000 anti-wear strength, and the best environmental stress crack resistance. The environmental stress cracking is >4000h, which is more than twice that of PE100. About 50 years, it can still maintain more than 70% of mechanical functions.
8. The simple super-high molecular weight polyethylene (UHMW—-PE) pipe 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. The UHMW-PE pipe is extremely resistant to aging and is not susceptible to aging for 50 years. Whether it is erected on the ground or buried underground. Whether it is welding or flange connection, the device is safe, reliable, convenient and convenient, no need for anti-corrosion, labor saving and labor-saving, and fully reflects the superiority of using energy-saving, environmental protection, economy and high efficiency of ultra-high molecular weight polyethylene pipeline.
9. Other characteristics Ultra-high molecular weight polyethylene pipe also has outstanding characteristics such as energy absorption, noise absorption, antistatic, shielding ability for electrons, no water absorption, light specific gravity, simple machining, and coloring.