Expanded Polystyrene is a thermoplastic polymer. Expanded Polystyrene is a product that is not a problem for the environment and humans. No damage to the environment occurs at all stages of construction, use, recycling or disposal of this product. BASF developed a two-stage process for the production of polystyrene foam at the beginning of the 1950s. Expansion polystyrene (EPS) or polystyrene (EPS) is a light-and-white granule. Expansion polystyrene as refrigeration insulation in cold stores and industrial refrigerators, making all kinds of foam packaging   

The name of the material (Farsi): Expanded polystyrene 

The name of the material (English): Expanded Polystyrene 

Brand (Persian): Eps 

Brand (English): EPS 

Other names: Ethylbenzene-H-Polymer, Oligo-Styrene, Polymer Vinyl Benzene 

Related Materials: Styrene 

Producer complexes: Tabriz Petrochemical Complex  

As a result of exiting this gas, the volumes of polystyrene granules increase up to 40 times their initial size. After expansion, the expanded seeds are molded according to the type of application. Expansion polystyrene is a product that is not a problem for the environment and humans. No damage to the environment occurs at all stages of construction, use, recycling or disposal of this product. Fireproof polystyrene foam is actually a fire resistant polystyrene foam. In the early 1950s, BASF company developed a two-stage process for the production of polystyrene foam. In this process, the first step involves the preparation of seeds containing a uniform distribution of Puffy agent by polymerization of suspension of monomer styrene, which in the second stage of this material occurs inside a processing mold. The ease of production of any product in any form and size is one of the advantages of this method that has been developed. Expanded polystyrene, or EPS, is a fireproof polystyrene granule, light, and white. This material was first produced in 1950.  

Indications: 

Styrofoam blocks as refrigeration insulation in cold stores and industrial refrigerators, making all types of foam packaging and refrigerator types.  

Physical and chemical properties: 

Molecular Weight Monomer = 104, anti-fire, good thermal insulation, ideal mechanical properties (pressure resistance and shock absorbing), insensitivity to water, ability to mold and cut in various forms, the possibility of recycling, low cost per Unit size, high rigidity to weight ratio, so that the parts are of low weight and good strength, low density 

  Thermal conductivity (k) 0.08 W / (mK) 

Melting point = 240 C  

Safety Information: 

It causes irritation and redness of the eye. It does not cause problems with skin contact. It is not toxic. The high accumulation of pentane vapor results in explosions.  

Ordinary polystyrene 

Typical polystyrene is a thermoplastic polymer. The first time in 1940, polystyrene was manufactured by the German company Farin Industries and used as insulation in the electrical industry. One of the things that have expanded the application of this polymer is the transparency, ductility and low cost, which has created a special place for different types of polymers. Polystyrene is used in the preparation of disposable utensils, electrical appliances, clocks and televisions and radios, sporting goods, toys, refrigeration cabinets, refrigerators and home appliances.  

The name of the material (Farsi): ordinary polystyrene 

  Material name (English): General Purpose Polystyrene 

Brand (Persian): GPPS 

Brand (English): GPPS 

Other names: Crystal polystyrene, Polystyrene, Ethylbenzene, Hemo-polymer 

Related materials: styrene, mineral oil, butadiene rubber 

Producer complexes: Tabriz Petrochemical Complex 

One of the things that expanded the application of this polymer is the transparency, ductility and low price, which has created a special place among different types of polymers. The global production capacity of polystyrene in the last decade with an average annual growth of 75.5% from 8.7 million metric tons in 1990 to 18 million tons in 2003, which has more than doubled in this period. Unlike other plastics, this plastic is not crystalline and transparent. Polystyrene has good resistance to water absorption and excellent thermal and electrical insulation. With a global consumption of 14.7 million tons, this polymer covers about 9 percent of the consumption of basic polymers. Polystyrene is produced in 3 impact resistant HIPS grades, ordinary GPPS and expanded EPS. For the first time in 1940, polystyrene was manufactured by German company Industries I.G.Farben and used as insulation in the electrical industry. During World War II, when natural rubber was closed to the US, this polymer was used to produce synthetic rubber in the United States. After the war, the re-entry of natural rubber into the United States began. Consumption of polystyrene was far lower than its production. As a result, a large marketing market for polystyrene was started for daily use, so today, polystyrene is one of the most popular plastics that is needed and consumed in most industries.  

Indications: 

Throw-away utensils, electrical appliances, clocks and TVs and radios, sporting goods, toys, refrigeration cabinets, refrigerators and home appliances 

Safety Information: 

The eye stimulant does not affect the skin at normal temperature. Non-toxic, no environmental effects.