POLYETHYLENE
What is polyethylene?
Polyethylene is a synthetic thermoplastic and non-polar polymer, i.e. a substance with a long molecule, formed by the combination of a number of monomer molecules. It is one of the most common materials in the world.
Polyethylene production
The ethylene polymerization process obtains this product. Depending on the polymerization conditions, i.e. long molecules formation, polyethylene gains its properties. The colorless gas ethylene is a basis of polyethylene. It is obtained after reproduction of petroleum products – straight-run gasoline, the gas-oil, etc. The substance that is got in the process of polymerization possesses exclusive properties like:
- well good thermoplastic
- chemical resistance
- shock resistance
In addition, polyethylene can be used as isolator due to its dielectric property.
Polyethylene is one of the most common polymers worldwide. Currently, there are three main types of polyethylene, which differ depending on the method of processing ethylene:
- of low density
- of medium density
- of high density
The higher is pressure during polyethylene manufacturing the lower is the density of this material. In some cases polyethylene grades LDPE, MDPE, and HDPE is combined with polypropylene, rubber, polyisobutylene in purpose to enhance its capabilities.
Basic advantages of polypropylene
The main differences between polyethylene and polypropylene are as follows:
- polyethylene is more elastic
- it possesses good toughness even in conditions of low temperature
- polyethylene differs higher frost resistance, can withstand temperatures up to -50 °C
- it is being sold at quite affordable rates
In addition, significant features of polyethylene are:
- impermeability
- quite low specific gravity
- the ability to be easily cultivated
In comparison with other engineering plastics, polyethylene is more versatile and safe. It is approved for use in the food industry.
Use of polyethylene
A wide range of usability is one of the important advantages of this polymer. So, today polyethylene is being used in the following fields:
- packaging and laminating
- containers production
- kitchen utensils
- piping systems (of all-purpose pipes)
- electrical insulation of wires and switching elements
- medicine (medical tools production)
- thermal insulation materials
For the consumers, the most important feature of polyethylene is its water resistance capability as well as chemical resistance and plasticity. In recent years, the reuse of polyethylene became very important. Due to this feature of polyethylene irreplaceable natural resources ain’t being spent in less degree as well as environment is not being polluted.
The role of polyethylene in human life
The use of polyethylene made our lives easier and more comfortable. Nevertheless, it led to the formation of a great volume of household and industrial waste. The material decays in 500-600 years, thus it is important to utilize the polyethylene waste, besides it’s a kind of economy whereas this polymer is appropriate for reuse.
Each polyethylene grade is indispensable in a certain field. The high-pressure polyethylene is the best option in packaging. The low-pressure polyethylene is good in making of elastic products (pipes, thick films) manufacturing.
With the right and responsible approach to the use of this polymer, humanity will be able to derive the maximum benefit. At the same time, no harm will be caused to the environment.
Our company offers deliveries of polyethylene of different grades, we are open to cooperation and we will be glad to see you among our clients!
