Polyethylene (HDPE , LDPE , LLDPE)
What is polyethylene?
Polyethylene is a type of thermoplastic polymer (it melts due to heat and becomes hard or solid again after cooling), which has a variable crystal structure and is used for different purposes depending on its type.
In fact, PE (abbreviation of Polyethylene) is a light and versatile resin that is made by the polymerization process of ethylene and is a member of the polyolefin resin family.
Types of PE
PE , which are also called polyethylene, are divided into three main categories based on density, polymer chain size and the number of branches:
HDPE or heavy polyethylene (high density)
LDPE or light polyethylene (low density)
LLDPE or linear polyethylene (low density)
Heavy polyethylene
This type of heavy polyethylene is also called High Density polyethylene. HDPE is a type of unbranched polymer chain PE. This factor has caused the intermolecular force in the chains to be high. Therefore, it has higher tensile strength than other types. The polymerization of HDPE is carried out at relatively low pressure and temperatures. It is true that its impact resistance is lower than the light type, but it has a very high resistance to chemicals. For this reason, it has been used to make toys, cable and wire coating, and it has also replaced raw materials such as stone and wood. In general, the characteristics of this type of PE include the following:
1-High resistance to weather
2-Suitable for acidic environments
3-Resistant to decay and mold
4-Recyclable and suitable for disposable products
Light polyethylene
Another type of light PE is Low Density polyethylene or LDPE, which has a branched chain. The presence of these branched chains has made them not bond as well as HDPE. As a result, they have a weak intermolecular force and have lower tensile strength than the heavy type. LDPE has a lower density and therefore better flexibility than heavy.
For this reason, it is often used for covers, transparent talc coatings, compressed bottles, food, sanitary, pharmaceutical, etc. packaging. In general, the features of low density or light PE include the following:
1-High resistance to dilute acids and alkalis
2-High impact strength at low temperatures
3-Adaptability to different climates
Linear light polyethylene
This type of polyethylene is also called linear low density polyethylene. LLDPE is also a linear polymer with short branches. LLDPE polyethylene has a lower density than LDPE. It has a very high resistance against tearing and piercing. It has a very reasonable price and its mechanical and chemical resistance is very favorable. It also has a higher melting point and is a very suitable option for packaging hot products. This type of polyethylene is often used to produce doors, plastic covers, making buckets, etc. Among the features of LLDPE, the following can be mentioned:
1-Very high mechanical and chemical resistance
2-Strong and strong
3-It has a shiny surface and is resistant to cracking
4-High pressure tolerance
5-It has several times more tear resistance than other polyethylenes
PETRO PARS ARGHAVAN
Petro Pars Arghavan Company is active in the field of export and import of various petroleum products, petrochemicals and polymer materials and products.
And having a strong and expert group with high ability and experience in this field has been able to provide quality products with competitive and suitable prices.
And it is among the best polymer exporters.
Petro Pars Arghvan Company has always put high quality and honesty in the field of global trade at the forefront of its work for the development and progress of its customers.
And by exporting polymer materials and products in the form of compounds and granules to different countries such as Spain, China, India, Oman, Russia, UAE, Iraq, Africa, etc., they are one of the active players in the trade of these products.
To buy polymer exported from Iran, send the following documents to the company’s email.
L.O.I
Company registration certificate
Passport scan
EMAIL: INFO@PETROPARSARGHAVAN.COM