Polyurethane foam - has found the application as heater in the sixtieth, then it was used in refrigeration chambers. But more polyurethane foam heaters (PPU) were widely used in the late nineties. There is number of opinions on this material, someone claims that it is fine heater, and someone opposite, rejects possibility of its application in inhabited and even office rooms.
Pluses and minuses of polyurethane foam heaters
It is considered that polyurethane foam combustible material. Yes, it really burns, but as well as all polymeric materials for warming. At all only basalt fiber and haydite and that do not burn at observance of certain conditions. Also PPU burns only at direct influence of flame. Besides modern PPU have fire-retarding agents in structure and therefore are self-fading.
Active application of PPU became possible not only thanks to its heat-insulating properties, but also convenience of application. Frothed liquid heater easily gets into far corners of roofs, pipes, the deformed surfaces.
Polyurethane foam is toxic. However absolutely eco-friendly it is possible to consider only tree and stone, and not processed by chemicals. The majority of objects of plastic distinguish harmful to organism and the nature of substance. Therefore norms of threshold limit value of hazardous substances air are used. New books, for example, emit the lead which is contained in paint, covering of the new car – complex toxin, and there is a lot of such examples in everyday life. By the way, PPU foam emits residual gases only three days, after that it becomes almost safe. Test as a result of which it has become clear that mineral wool holds about 18% of moisture has been carried out. Penoizol absorbs 13-14%, and polyurethane foam of high density holds only 1-2% of water. From this it is possible to draw conclusion that thermal insulation from PPU is rather hygroscopic. The warmed house will not be chilled and will not be struck with fungus or mold. However it is necessary to remember that PPU has to have rather high strength, otherwise the similar effect will not be gained.
Timely care for heater – durability guarantee
Polyurethane foam collapses approximately on 1 mm in year. But if to cover it oil or aqueous emulsion ink, heater will hold on 30 more years. If it is good to degrease and dry up surface, then polyurethane foam sticks practically to everything, it allows to apply it even on sloping surfaces that is very convenient and practical.
Unlike many heaters, PPU can be used both outside of buildings, and in them. Polyurethane foam process even walls of cars and the bottom of small size vessels.
So, if to follow service regulations and to use quality, dense polyurethane foam heater and also to pick up for performance of work of the qualified specialist in this area, heater will serve many years and without harm for health.