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HDPE - High Density Polyethylene
HDPE pipe is pressurized plastic pipes are widely used for water pipes and gas pipes. Called HDPE plastic pipes because of material derived from petroleum polymer. Therefore, PE material prices affected by fluctuations in oil prices. Polyethylene (abbreviated as PE) (IUPAC: polythene) is a thermoplastic that is used widely by consumer products as plastic bags. About 80 million metric tons of plastic are produced each year.
Polyethylene is a polymer consisting of long chains of the monomer ethylene (IUPAC: ethene). In the polymer industry, written with the abbreviation PE polyethylene, the same treatment is done by Polystyrene (PS) and Polypropylene (PP).
Ethene molecule C2H4 is CH2 = CH2. Two CH2 group united by a double bond. Polyethylene is formed through polymerization of ethene. Polyethylene can be produced through a process of radical polymerization, anionic addition polymerization, ion coordination polymerization or cationic addition polymerization. Each method produces different types of polyethylene.
While that is a HIGH DENSITY PE is:
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High density polyethylene (high density polyethylene, HDPE) adalahpolietilena thermoplastic made from petroleum. Requires 1.75 kg of oil (for energy and raw materials) to make 1 kg of HDPE. HDPE can be recycled, and has the number 2 on the recycle symbol. In 2007, HDPE production volume reached 30 tons.
HDPE has very little branching, this is because the choice of catalyst in the production (Ziegler-Natta catalysts) and reaction conditions. Because branching slightly, HDPE has a tensile strength and high molekulyang intermolecular forces. HDPE is also harder and can withstand high temperatures (120oC).
HDPE is highly resistant to chemicals that have broad applications, including:
Packaging detergents
Bottled milk
Fuel tanks
Plastic timber
Folding table
Folding chair
Plastic bags
Containers carrying some kind of chemicals
Geothermal piping system transfer
Natural gas pipeline system
Water pipe
Packaging cable
Snowboarding
HDPE pipes are used for:
Water pipe
Gas pipeline
Pipe chemicals
Dirty water pipes
Biogas pipe
Other applications outside the pipe function.
Pipe is a tube used to deliver the water / gas / other substances from atu place to another. As a medium of instruction pipeline will be influenced by the pressure within the pipe or pipes outside pressure. Besides, it depends also by the type of liquid / gas through it. Advantages of HDPE pipe is resistant to corrosion (rust). HDPE pipe is resistant to corrosion because of HDPE pipe is made of plastic.
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