Special brands of polyurethanes posess a valuable combination of physical and mechanical properties that are not characteristic of any other polymeric materials: relatively low density / apparent density, high strength properties, especially resistance to abrasion, good resistance to ionizing radiation, extremely low thermal conductivity coefficient over a wide temperature range, exceptional comfort properties. These qualities of polyurethane materials make them indispensable in aviation and rocket engineering:
Insulation made of polyisocyanurate foam, designed to work in low and cryogenic temperatures (including isolation of tanks with liquid oxygen, etc.).
Paints, adhesives, coatings, sealants, anti-corrosion mixtures.
Urethane bonding agents for explosive propellants and composite materials.
Padding of aircraft seats and astronaut seats - made of elastic and viscoelastic molded polyurethane foam.
Fillers for fuel tanks of military aviation machinery - made of reticulated block-structured flexible polyurethane foam (preventing explosion of fuel vapors getting mixed with air when entering submunition fuel tanks).
Various parts made of polyurethane elastomers, thermoplastic PU and rigid microcellular PU foam.