Polistyle foam is a white isolation material. In composition, it consists of 98 % of the air and foamed polystyrene, whose share is only 2 %. This is a special gas -filled material that is formed from polystyrene and its copolymers. In his work, he is very economical. The first mention of him and its use falls on 1928.
It was then that French scientists received the first samples of polystyrene foam, but industrial production in Europe was established for the first time in Germany in 1937. The composition of polystyrene foam includes many components: Butadienon, acrylonitril, isopentan, dichlormethan, ammonium nitrate, azobisizobutinrine, antipyrene, plasticizers, fillers, dyes, etc. D.
This material is currently produced by several types, the main of which include polystyrene foam:
unreasonable;
extrusion;
press;
autoclave;
Autoclast-transstrus.
The basic principle of production is the foaming of the material using vapors of low -boiling liquids. Then the resulting granules sinter under the influence of temperatures, combining this process with forming the required products.
Advantages of polystyrene foam:
environmentally friendly product;
non -toxic;
heat and soundproofing material;
long life;
economical;
low degree of thermal conductivity;
small vapor permeability;
does not give cracks;
does not contribute to the propagation of microorganisms;
does not rot;
not exposed to mold;
does not decompose.
The undoubted advantages of this material include the fact that it has a special property in combustion – self -adjusting.
Polistyle foam is characterized by such an important indicator as the lack of interaction with various substances and environments, it tolerates the presence perfectly:
asphalt emulsions;
liquid fertilizers;
cement;
artificial fertilizers;
gypsum;
sea water;
groundwater.
Flaw.
Despite such an extensive list of advantages, this material has some disadvantages, in particular, it is destroyed by the effects of ultraviolet radiation (begins to crumble), it does not tolerate rain and wind poorly.
Application.
Use polystyrene foam as a structural material for creating thermal insulation. The durability of the structures made from it has been proved experimentally, and the life is about 60 years to 80 years.
Areas of use of polystyrene foam:
in construction;
in shipbuilding;
in aircraft industry;
as packaging of goods;
as electrical insulation;
for depreciation;
for insulation of facades;
during the construction of roads.
Purerol foam in pure form easily ignites. In order to make it safer, antipypees are introduced into the composition. In this case, an updated material is obtained, which has the property of self -substitution, which significantly expands the scope of its application.