Astana polyfoam

Polyfoam is the class of materials representing the made foam (cellular) plastics (Gas-filled plastic). As the main volume of polyfoam occupies gas, density of polyfoam is significantly lower, than density of its initial raw materials (polymer). It causes rather high heat-insulating (in separately taken cell convection streams) and sound-proof (thin and rather elastic partitions of cells - the bad conductor of sound vibrations are almost impossible) properties of materials of this class.

Polyfoams were received practically from all most widely applied plastic (polymers) therefore the most known materials of this class are: polyurethane polyfoams, polyvinylchloride polyfoams, phenolformaldehyde, carbamide and formaldehyde polyfoams and polystyrene polyfoam.

Depending on structure of raw materials and technology of its processing it is possible to let out polyfoam of different density, mechanical durability, resistance to different types of influence. These factors also cause the choice of a concrete type of polyfoam for application in these or those conditions and the purposes.

In living conditions of people most often faces such type of polyfoam as bespressovy expanded polystyrene (it was invented by BASF firm in 1951, the company name "stiropor"). Granules of a stiropor (PSV / EPS) receive by polymerization of styrene at simultaneous addition of poroobrazuyushchy substance (pentane). Polyfoam of PSB-S (expanded polystyrene, a stiropor) — widely known heat-insulating material for 98% consisting of the gas concluded in microscopic thin-walled cells from polystyrene.