Polyurethane elastomers na toshe polymers, wato, polyurethane macromolecules sun ƙunshi "ɓangarorin masu laushi" da "ɓangarorin masu wuya" kuma suna samar da tsarin rabuwa na micro-lokaci, wanda aka tarwatsa sassa masu wuya (daga isocyyanates da sarkar sarkar) a cikin taushi. yanki na yanki (daga polyols oligomer) don taka rawar abubuwan haɗin giciye na zahiri.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 "CASE" a ƙasashen waje, galibi sun haɗa da samfuran elastomer na gargajiya na polyurethane, kayan shimfidawa kamar titin jirgin ruwa na polyurethane, rufin ruwa na polyurethane, adhesives, sealants, adhesives, da sauransu, suna lissafin kusan 40% na jimlar adadin. samfurin polyurethane.Yawancin samfuran da aka warke na kayan CASE (na tushen ruwa da samfuran kaushi bayan cire ruwa da kaushi) kayan polyurethane ba na roba ba ne.PU roba fata guduro, wasu coatings da adhesives su ne sauran ƙarfi-tushen ko ruwa na tushen kayayyakin, wanda kuma za a iya daukarsa a matsayin polyurethane elastomer kayan a cikin m hankali.A cikin kunkuntar ma'ana, polyurethane elastomers na nufin castable polyurethane elastomers (CPU), thermoplastic polyurethane elastomer (TPU) da gauraye polyurethane elastomer (MPU), lissafin 10% ko dan kadan kasa da jimlar adadin polyurethane.CPU da TPU sune manyan elastomers na polyurethane, kuma bambance-bambancen su ya ta'allaka ne a cikin tsarin samarwa da sarkar sarkar.Irin wannan nau'in elastomer na polyurethane na gargajiya, wanda kuma aka sani da "roba polyurethane", yana cikin nau'in roba na roba na musamman.Babban aikin polyurethane elastomer shine mafi kyawun kayan da ba a iya jurewa a cikin duk kayan aikin polymer na roba, wanda aka sani da "sarkin juriya", kuma ana amfani dashi sosai a fannoni da yawa, kuma sabbin aikace-aikacen har yanzu suna fadadawa.
Ana iya amfani da elastomer na polyurethane don maye gurbin karfe, filastik da roba na yau da kullun a wasu filayen.
Idan aka kwatanta da kayan ƙarfe, elastomer na polyurethane yana da fa'idodin nauyi mai sauƙi, ƙaramar amo, juriya mara ƙarfi, 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 tsage, ƙarfin ɗaukar nauyi, juriya na ozone, da dai sauransu, kuma yana da sauƙin ƙira, ana iya yin tukunya, zuba, kuma yana da fa'ida tauri.
Lokacin aikawa: Fabrairu-14-2023