Polyurethane (PU), cikakken sunan polyurethane, wani fili ne na polymer, wanda Otto Bayer da sauransu suka samar a cikin 1937. Polyurethane yana da manyan nau'i biyu: polyester da polyether. Ana iya yin su zuwa filastik polyurethane (yafi kumfa), polyurethane fibers (wanda aka sani da spandex a kasar Sin), roba na polyurethane da elastomers. Polyurethane wani abu ne na polymer wanda ya dace don amfani da shi azaman murfin ƙafa a cikin kera simintin masana'antu.
Babban abũbuwan amfãni daga polyurethane casters ne yafi kamar haka:
Na farko, aikin aikin daidaitacce
Ana iya daidaita yawan alamun aikin jiki da na inji ta hanyar zaɓin albarkatun ƙasa da ƙididdiga, a cikin takamaiman kewayon sauye-sauye masu sassauƙa, don biyan buƙatun mai amfani na musamman don aikin samfur.
Na biyu, mafi girman juriya abrasion
A gaban ruwa, mai da sauran yanayin aikin watsa labarai na jika, masu simintin polyurethane suna sa juriya sau da yawa sau da yawa zuwa sau da yawa na kayan roba na yau da kullun. Kayan ƙarfe irin su karfe da sauran masu wuya, amma ba lallai ba ne su jure lalacewa!
Na uku, hanyoyin sarrafawa, fa'ida mai fa'ida
Polyurethane elastomers za a iya gyare-gyare tare da roba manufa na gaba ɗaya ta hanyar filastik, hadawa da vulcanizing (MPU); Hakanan za'a iya sanya su ta zama roba mai ruwa, zubawa da gyare-gyare ko fesawa, rufewa da gyare-gyaren centrifugal (CPU); Hakanan ana iya sanya su cikin kayan granular da robobi na yau da kullun ta hanyar allura, extrusion, calending, gyare-gyaren busa da sauran matakai (CPU). Sassan da aka ƙera ko allura, a cikin takamaiman kewayon taurin, ana iya yankewa, niƙa, hakowa da sauran sarrafa injina.
Na hudu, juriya na mai, juriya na ozone, juriya na tsufa, juriya na radiation, juriya mai ƙananan zafin jiki, watsa sauti mai kyau, ƙarfin mannewa mai karfi, kyakkyawan yanayin halitta da karfin jini. Waɗannan fa'idodin sune ainihin dalilin da yasa ake amfani da elastomers na polyurethane sosai a cikin soja, sararin samaniya, acoustics, ilmin halitta da sauran fannoni.
Lokacin aikawa: Oktoba-30-2023