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INFLUENCE ON THE PHYSICAL AND MECHANICAL PROPERTIES OF PRODUCED POLYURETHANES WITH A CHANGE OF THE AMOUNT OF POLYPHERPOLYOL USED IN THE SYNTHESIS OF THERMOREACTIVE POLYURETHANES

Polymer, polyether polyol, polyurethane, degree of hardness, relative elongation, friction erosion, 4,4- methylenediphenyldiisocyanate, crystallization, polycondensation

Authors

  • Acliddin SHODIYEV Navoiy davlat konchilik va texnologiyalar universiteti tayanch doktoranti, Uzbekistan
  • Baxodir MUXIDDINOV Navoiy davlat konchilik va texnologiyalar universiteti professori, k.f.d., Uzbekistan
  • Sharifjon QIYOMOV Toshkent kimyo texnologiya ilmiy-tadqiqot instituti, k.i.x, Uzbekistan

Today, thermoreactive polyurethane samples are produced by polycondensation on the basis of diisocyanate and polyether
polyols in a traditional way. The polycondensation process was carried out in special steam crystallization furnaces.
Polyetherpolyol was added at 10, 30, and 50 parts by mass of 4,4-methylenediphenyldiisocyanate per 100 parts by mass in the
production of these polyurethane samples that we studied. The effect of changing the amount of polyether polyol on various
physical and mechanical properties of the prepared polyurethane samples, such as abrasion resistance, hardness level, and relative
elongation, was studied.