N’chifukwa chiyani mungasankhe polyurethane ya mafakitale ndipo ubwino wake ndi wotani?

Polyurethane (PU), dzina lonse la polyurethane, ndi polima, yomwe idapangidwa mu 1937 ndi Otto Bayer ndi ena. Polyurethane ili ndi magulu awiri akuluakulu: polyester ndi polyether. Angapangidwe kukhala mapulasitiki a polyurethane (makamaka thovu), ulusi wa polyurethane (wodziwika kuti spandex ku China), rabara ya polyurethane ndi elastomers. Polyurethane ndi chinthu cha polima chomwe chili choyenera kugwiritsidwa ntchito ngati chivundikiro cha mawilo popanga ma casters a mafakitale.

Ubwino waukulu wa ma polyurethane casters ndi awa:

Choyamba, magwiridwe antchito a mtundu wosinthika

Zizindikiro zingapo zogwirira ntchito zakuthupi ndi zamakina zitha kusinthidwa mwa kusankha zinthu zopangira ndi ma formula, mkati mwa kusintha kosinthasintha, kuti zikwaniritse zofunikira zapadera za wogwiritsa ntchito pakugwira ntchito kwa chinthucho.

Chachiwiri, kukana kwabwino kwambiri kwa kukwawa
Pakakhala madzi, mafuta ndi zinthu zina zonyowetsa, ma polyurethane casters nthawi zambiri amakhala olimba kuposa zipangizo wamba za rabara. Zipangizo zachitsulo monga chitsulo ndi zina zolimba, koma sizimawonongeka kwenikweni!

Chachitatu, njira zogwirira ntchito, kugwiritsidwa ntchito kwakukulu
Ma elastomer a polyurethane amatha kupangidwa ndi rabara yogwiritsidwa ntchito poika pulasitiki, kusakaniza ndi kuipitsa (MPU); amathanso kupangidwa kukhala rabara yamadzimadzi, kutsanulira ndi kuipitsa kapena kupopera, kutseka ndi kuipitsa centrifugal (CPU); amathanso kupangidwa kukhala zipangizo zopyapyala ndi mapulasitiki wamba poika jekeseni, kutulutsa, kuyika calendering, kuipitsa ndi njira zina (CPU). Zigawo zoipitsa kapena zoipitsa, mkati mwa mtundu winawake wa kuuma, zimathanso kudulidwa, kupukutidwa, kubowola ndi kukonza zina zamakanika.

Chachinayi, kukana mafuta, kukana ozoni, kukana ukalamba, kukana kuwala kwa dzuwa, kukana kutentha kochepa, kutumiza mawu bwino, mphamvu yolimba yomatira, kuyanjana bwino kwa zamoyo komanso kugwirizana kwa magazi. Ubwino uwu ndi chifukwa chake ma elastomer a polyurethane amagwiritsidwa ntchito kwambiri munkhondo, ndege, mawu, sayansi ya zamoyo ndi zina.