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HDPE Pipe Excellent Resistance To Performance

2018-11-15

High-density polyethylene, the English name is "High Density polyethylene", referred to as "HDPE." HDPE is a kind of thermoplastic resin with high crystallinity and non-polar. The appearance of the original HDPE is milky white, a certain degree of translucent in the meager section. PE has excellent resistance to most of the properties of living and industrial chemicals. Certain types of chemicals can produce chemical corrosion,HDPE Pipe such as corrosive oxidants (concentrated nitric acid), aromatic hydrocarbons (xylene) and halogenated hydrocarbons (carbon tetrachloride). The polymer is not hygroscopic and has good water vapor resistance and can be used for packaging purposes. HDPE has good electrical properties, especially the high dielectric strength,HDPE Pipe so it is suitable for wire and cable. Medium to high molecular weight grade has excellent impact resistance, at room temperature even at -40f low temperature.

HDPE is a thermoplastic polyolefin produced by ethylene copolymerization. Although HDPE was introduced in 1956, the plastic has not reached its maturity level. This generic material is also constantly developing its new uses and markets. of thermoplastic resins. The appearance of the original HDPE is milky white, a certain degree of translucent in the meager section. PE has excellent resistance to most of the properties of living and industrial chemicals. Certain types of chemicals can produce chemical corrosion,HDPE Pipe such as corrosive oxidants (concentrated nitric acid), aromatic hydrocarbons (xylene) and halogenated hydrocarbons (carbon tetrachloride). The polymer is not hygroscopic and has good water vapor resistance.

PE может быть изготовлено с использованием самых разнообразных методов обработки. Включает такие как экструзия листа, экструзия пленки, экструзия труб или профилей, выдувное формование, литье под давлением и формование в рулонах.

HDPE pipe is the traditional steel pipe, PVC drinking water pipe replacement products.

HDPE pipe must withstand a certain pressure, usually to choose a large molecular weight, good mechanical properties of PE resin, such as HDPE resin. The tensile strength of LDPE resin is low, the pressure is poor, the rigidity is poor, the dimensional stability is poor when forming, and the connection is difficult, which is unsuitable as the material of water supply pressure pipe. However, because of its high health index, LDPE especially LLDPE resin has become a common material for the production of drinking water pipes. LDPE, LLDPE resin melt viscosity is small, good fluidity, easy to process, so the selection of its Melt Index range is also wider, usually mi in 0.3-3g/10min.

Chemical properties

Polyethylene resistance to a variety of organic solvents,HDPE Pipe resistance to a variety of acid-base corrosion, but not antioxidant acid, such as nitric acid. Polyethylene is oxidized in an oxidizing environment.

Physical

Полиэтилен можно считать прозрачным в тонкопленочном состоянии, но в присутствии массивных кристаллов наблюдается сильное рассеяние света и непрозрачность. На степень кристаллизации полиэтилена влияет количество разветвлений, чем больше разветвленная цепь, тем сложнее кристаллизация. На температуру плавления полиэтилена также влияет количество ответвлений, из которых HDPE Pipe распределяется от 90 градусов Цельсия до 130 градусов Цельсия, чем больше плавится цепь ответвления, тем ниже температура. Монокристаллы полиэтилена обычно могут быть получены путем растворения полиэтилена высокой плотности в среде при температуре выше 130 градусов Цельсия.