What is the Polystyrene?

Polystyrene, linear polymer of styrene, [-CH2-CH (C6H5)-]n; transparent stekloobraznoe substance, molecular weight 30-500 thousand, density of 1,06 gr/cm3 (20 °C), temperature steklovanija 93°C.

Polystyrene - colorless, firm steklopodobnoe the substance passing up to 90 % of beams of a visible spectrum; density of polystyrene 1,05. A structure of a circuit of polystyrene regular (as "head-tail").

Polystyrene is a thermoplastic plastic in the form of plates with a smooth surface or with shtampovannym the figure, made by a method of extursion. Polystyrene has found wide practical application, beginning from safe glazing before registration of an interior of premises. Popularity of polystyrene and a version of its application is a consequence of very good technical properties and the low price.

White polystyrene is an economic alternative to plastic of PVC, and transparent - to plexiglas. Popularity of a material is caused by high crashworthiness, ease of processing and flexibility. It is perfectly formed and processed. Also polystyrene interferes with loss of heat, is steady against various chemical substances, but unstabl to differences of temperatures and humidity. Its main advantage is lower, than at other plastics cost.

Ideal substitute of glass. A magnificent transparency and ease in use. The raw material represents polymer with fine physical and chemical properties therefore the product convenient for use as inside turns out, and outside of a premise. Besides polystyrene is much cheaper than plexiglas.

Smooth transparent polystyrene serves as alternative to glass, there, where it is required internal osteklenie premises. Transparent polystyrene perfectly passes light, but influence of direct solar beams can cause pozheltenie, turbidity, decrease prochnostnyh characteristics.

Polystyrene differs the big stability water, acids (including fluoric) and to alkalis;
Polystyrene is dissolved in aromatic hydrocarbons and complex ethers.
Polystyrene is not dissolved in gasoline and spirit.
Owing to high dielectric polystyrene is widely used by properties in a radio engineering and other branches of high-frequency technics. Polystyrene possesses the aromatic nature, easily enough enters reactions of replacement in fenilnyh groups (nitrovanie, sulfirovanie, etc.). These transformations of polystyrene are used in manufacture ionoobmennyh pitches, polymeric dyes, etc.

Polymerization of styrene spend at presence of initiators on the radical mechanism more often. Molecular weight of polymer depending on conditions of reaction kolebletsja within the limits of 50-300 thousand For processing polystyrene in products apply a method of moulding under pressure, pressing, exturzion, blowing.

In manufacture of lenses and electrotechnical details machining of blocks and plates from polystyrene is applied. polistirolnye fibres possess a transparency and elasticity, it allows to apply polystyrene in fiber optics, the electrical engineer, manufacture of the reinforced plastics.

Polystyrene is used for reception of polyfoams and materials on their basis. Polyfoam receive at heating a mix of polystyrene with transformating (the substance decaying with liberation of gas) above temperature of a softening of polymer (nearby 180-200). Thus there is a decomposition of transforming to allocation of gases which "inflate" semi-liquid weight in polyfoam.

In order to prevent damage of a surface sheets becomes covered by a protective film from two parties.

Attention!!! Polystyrene is strongly a combustible material.