Studies of Thermoplastic Elastomer of Copolyether Polyurethanes and Polyurethaneureas Plasticized with Dibutyl Phthalate

The influence of dibutyl phthalate contents on mechanical properties and glass transition temperature of several copolyether polyurethanes and polyurethaneureas based on different relative molecular mass ethylene oxide-tetrahydrofuran copolyether, 1,4-diphenyle methane diisocyanate/isophorored diisocyanate, 1, 4-butanediol/ethylene diamine were studied. All prepared TPE exhibited satisfactory strength and extention ability. The miscibility between DBP DBP and elastomers were also estimated and determined .