Polyurethane (PU), cikakken sunan polyurethane, wani abu ne na polymer, wanda Otto Bayer da sauransu suka samar a shekarar 1937. Polyurethane yana da manyan nau'i biyu: polyester da polyether. Ana iya yin su da robobi na polyurethane (galibi kumfa), zaruruwan polyurethane (wanda aka sani da spandex a China), robar polyurethane da elastomers. Polyurethane abu ne na polymer wanda ya dace da amfani da shi azaman murfin ƙafa wajen ƙera masu yin simintin masana'antu.
Babban fa'idodin casters na polyurethane sune kamar haka:
Da farko, aikin kewayon da za a iya daidaitawa
Ana iya daidaita wasu alamun aiki na zahiri da na injiniya ta hanyar zaɓar kayan aiki da dabaru, a cikin wasu canje-canje masu sassauƙa, don biyan buƙatun mai amfani na musamman don aikin samfur.
Na biyu, mafi kyawun juriya ga abrasion
A gaban ruwa, mai da sauran yanayin aikin danshi, masu yin amfani da polyurethane suna da juriya sau da yawa zuwa sau da yawa fiye da kayan roba na yau da kullun. Kayan ƙarfe kamar ƙarfe da sauran masu tauri, amma ba lallai bane su jure lalacewa!
Na uku, hanyoyin sarrafawa, faɗaɗɗen amfani
Ana iya ƙera elastomers na polyurethane da roba mai amfani ta hanyar plasticizing, gauraya da vulcanizing (MPU); kuma ana iya yin su da roba mai ruwa, zubawa da gyaggyarawa ko feshi, rufewa da centrifugal molding (CPU); kuma ana iya yin su da kayan granular da robobi na yau da kullun ta hanyar allura, extrusion, calendering, busa smolding da sauran hanyoyin (CPU). Sassan da aka ƙera ko aka ƙera, a cikin wani takamaiman kewayon tauri, ana iya yanke su, niƙa su, haƙa su da sauran sarrafa injina.
Na huɗu, juriyar mai, juriyar ozone, juriyar tsufa, juriyar radiation, juriyar ƙarancin zafin jiki, ingantaccen watsa sauti, ƙarfin manne mai ƙarfi, kyakkyawan jituwa da yanayin halitta da kuma dacewa da jini. Waɗannan fa'idodi su ne ainihin dalilin da ya sa ake amfani da polyurethane elastomers sosai a fannin soja, sararin samaniya, acoustics, ilmin halitta da sauran fannoni.
Lokacin Saƙo: Oktoba-30-2023