HEAT INSULATING COMPOSITE MATERIALS AND A METHOD OF THEIR PRODUCTION

摘要

The subject of this invention is the method of production of heat insulating composite materials based on polyurethanes and/or polyisocyanurates, joined together to create a whole without the use of adhesive agents (glues) with classic layers of foamed polystyrene, characterised in that onto the layer of foamed polystyrene a polyurethane mixture containing a polyol and isocyanate component is directly poured out, with the formation of a permanent weld exhibiting thermal continuity. Then, onto the polyurethane mixture poured out onto the first layer of foamed polystyrene a second layer of foamed polystyrene is placed with the formation of a permanent weld exhibiting thermal continuity. In the case of materials, in which the thickness of foamed polystyrene layer is no less than 20 mm, to the polyurethane mixture, and especially to the isocyanate component, a filler capable of phase changes is introduced from 20 do 120 % by weight in relation to the weight of the polyurethane mixture, depending on the amount of heat energy generated by the applied polyurethane system. The subject of the invention is also heat insulating composite material based on polyurethanes and/or polyisocyanurates, obtained by means of the above described method.