Linear light polyethylene 

Linear light polyethylene is a polymer material that is placed in a thermoplastic group. In 1993, for the first time in Iran, linear stylistic polyethylene was produced at the Arak Petrochemical Complex. North America, Asia, Pacific except Japan and Western Europe are the world's largest polyethylene producers, respectively. Polyethylene was first accidentally synthesized by German chemist Hans von Pechmann. It is used in the production of various types of films. Linear polyethylene is usually stable, it needs to preheat for fire, almost no protection is required. 

Material name (Farsi): Linear light polyethylene 

The name of the material: English Linear low-density ethylene 

Brand (Farsi): DLP 

Brand (English): LLDPE 

Other names: Ethyl homopolymer, Ethylene homopolymer, Ethylene polymer 

Related Materials: Ethylene, Ethylene Film Style, Heavy Polyethylene 

Production complexes: Jam Chemical Petrochemical Complex 

Uses: Film types, Agriculture 

In 1993, for the first time in Iran, linear stylistic polyethylene was produced at the Arak Petrochemical Complex. This unit is based on the production of 60,000 tons polyethylene linear LLDPE or heavy HDPE polyethylene. The density of this type of polyethylene is also less than light polyethylene. This kind of polymer, against rupture and perforation of the strength, shows better strength. North America, Asia, Pacific except Japan and Western Europe are the largest polyethylene producers in the world, respectively. The production of this polymer in 1998 was 10.9 million tons, up 6.6 percent in 2003 to 14.8 million tons and is projected to reach 19.5 million tons in 2008, up from a year earlier. But what looks so interesting is that linear stylistic polyethylene, due to its unique multi-dimensional properties, is considered to be of growing interest in production. Polyethylene was first synthesized accidentally by German chemist Hans von Pechmann. In 1898 he synthesized a white waxy compound during the heat treatment of diazomethane, later called polyethylene. The first method of polyethylene synthesis was randomly discovered in 1933 by Eric Fawcett and Reginald Gibson (ICI chemists). The two scientists obtained a waxy substance by heating the mixture of ethylene and benzaldehyde at high pressures. The reason for this reaction was the presence of impurities which contained oxygen in used devices, which acted as a polymerization initiator. In 1935, another scientist, Michael Prince, developed this method and synthesized polyethylene under high pressure, which became the basis for the production of LDPE in 1939.  

Physical and chemical properties: 

Density: 0.92 g / cm3 

Surface hardness: SD48 Max 

Operating temp: 50C 

Melting Temp: Range 120 to 160 ° C 

Mold Shrinkage: 3% 

Mold temp. Range 20 to 60 ° C  

Production methods: 

Ethylene polymerization reaction with long chain of olefin  

Safety Information: 

It is usually stable, it must be preheated for fire, almost no protection. 

Polyethylene film style 

The polyethylene film style is placed in the polymer film and in the thermoplastics group. Film style polyethylene is branched chain. LDPE chains  can not be well bonded to each other, with less intermolecular force and tensile strength. This material is used to produce polyethylene pipes, to make small volume containers, to make household utensils, toys, electrical and telecommunication wires, films, various car parts, sports equipment and laboratory equipment and industrial parts. Polyethylene film style usually Stable, it must be preheated for fire, it almost does not require protection. 

Material name (Farsi): Film style polyethylene 

The name of the material (English): Poly ethylene low-density film 

Brand (Farsi): LDPE 

Brand (English): LDPE 

Other names: Ethyl homopolymer, Ethylene homopolymer, Ethylene polymer 

Related Materials: Ethylene, Linear Ethylene, Heavy Polyethylene 

Production complexes: Bandar Imam Petrochemical Complex, Laleh Petrochemical Complex  

History: This polyethylene has branched chains, so LDPE chains  can not be well bonded to each other, with less intermolecular force and less tensile strength. This type of polyethylene is usually produced by radical polymerization. The properties of this polymer are flexible and can be decomposed by microorganisms. Polyethylene has low molecular density, which makes it more flexible. This feature has allowed more than fifty percent of the production of this product in the production of film and sheet for use in tile coatings. Transparent, packing linen, covers, and luggage. This type of polymer is also used for the manufacture of containers such as pressurized bottles. Other uses include lightweight polyethylene, insulation of wire and cable and paper overlays. Polyethylene was first synthesized accidentally by a German chemist. Polyethylene was first synthesized accidentally by a German chemist. In 1898 he synthesized a white waxy compound during the heat treatment of diazomethane, later called polyethylene. The first method of polyethylene synthesis was randomly discovered by (and from ICI chemists) in 1933. The two scientists obtained a waxy substance by heating the mixture of ethylene and benzaldehyde at high pressures. The reason for this reaction was the presence of oxygen-contaminated impurities in the devices used as polymerization initiator. In 1935, another ICI scientist developed this method and synthesized polyethylene under high pressure, which became the basis for the industrial production of LDPE in 1939.  

Indications: