Polyurethane elastomers suna cikin toshe polymers, wato, polyurethane macromolecules sun ƙunshi "ɓangarorin masu laushi" da "ɓangare masu wuya" kuma suna samar da tsarin rabuwa na micro.Ƙaƙƙarfan sassa (wanda aka samo daga isocyanates da masu haɓaka sarkar) an tarwatsa su a cikin yanki mai laushi mai laushi (wanda aka samo daga polyols oligomer) kuma suna taka rawar jiki ta hanyar crosslinking.Saboda haka, idan aka kwatanta da sauran roba roba (elastomers), polyurethane elastomers da mafi ƙarfi da kuma sa juriya, High elongation har yanzu za a iya kiyaye a lokacin da taurin ne high.
Abubuwan polyurethane na roba, waɗanda ake magana da su a matsayin "harka" a cikin ƙasashen waje, galibi sun haɗa da samfuran elastomer na gargajiya na polyurethane, titin jirgin sama na filastik da sauran kayan pavement, polyurethane mai hana ruwa ruwa, adhesives, sealants, adhesives potting, da sauransu, lissafin kusan 40% na jimlar adadin samfuran polyurethane.Yawancin samfuran da aka warkar da su na kayan harka (kayayyakin tushen ruwa da abubuwan da ake amfani da su suna cire ruwa da kaushi) kayan polyurethane ba na roba ba ne.PU roba fata guduro, wasu rufi da kuma adhesives su ne sauran ƙarfi-tushen ko ruwa kayayyakin, wanda kuma za a iya daukarsa a matsayin polyurethane elastomer kayan a cikin m hankali.A cikin kunkuntar ma'ana, polyurethane elastomer yana nufin jefa polyurethane elastomer (CPU), thermoplastic polyurethane elastomer (TPU) da gauraye polyurethane elastomer (MPU), lissafin 10% ko dan kadan kasa da jimlar polyurethane.CPU da TPU sune manyan elastomers na polyurethane, kuma bambance-bambancen su ya ta'allaka ne a cikin dalilai kamar tsarin samarwa da sarkar sarkar.Irin wannan nau'in elastomer na polyurethane na gargajiya, wanda kuma aka sani da "roba polyurethane", na wani nau'i ne na roba na roba na musamman.Babban aikin polyurethane elastomer shine abu tare da mafi kyawun juriya na lalacewa tsakanin duk kayan polymer na roba.An san shi da "sarkin juriya".Ana amfani da shi sosai a fagage da yawa, kuma sabbin aikace-aikace har yanzu suna faɗaɗa.
Ana iya amfani da elastomers na polyurethane don maye gurbin karafa, robobi da roba na yau da kullun a wasu filayen.
Idan aka kwatanta da kayan ƙarfe, elastomer na polyurethane yana da fa'idodi na nauyi mai sauƙi, ƙaramar amo, juriya asara, ƙarancin sarrafawa da juriya na lalata acid.Idan aka kwatanta da robobi, yana da fa'idodin babban ƙarfi da juriya mai girma.Idan aka kwatanta da roba na yau da kullun, polyurethane elastomer yana da fa'idodin juriya na lalacewa, yanke juriya, juriya mai tsagewa, ƙarfin ɗaukar hoto mai ƙarfi, juriya mai sauƙi, ƙira mai sauƙi, tukwane da zubowa, da kewayon tauri mai faɗi.
Polyurethane elastomer wani nau'i ne mai mahimmanci na polyurethane.A halin yanzu, amfani da shi yana kusan kusan 10% na yawan amfani da polyurethane.Ana amfani da elastomer na polyurethane don kera kowane nau'in ƙafafun roba, bel na jigilar kaya, ruwa mai jure ruwa da bututun roba mai jure matsewa, ratsi da zobe, kumfa na USB da fina-finai daban-daban.Ana amfani da samfuran sosai a cikin ƙarfe da ƙarfe, yin takarda, ma'adinai, injina, bugu da sauran masana'antu.Polyurethane elastomer za a iya canza shi ta wasu polymers, fibers, foda fillers, da dai sauransu don rage farashi da inganta aikin.
Lokacin aikawa: Mayu-05-2022