Rufin roba na polyurethane, waɗanda aka ƙera daga kayan roba na polyurethane, abubuwa ne masu mahimmanci a cikin aikace-aikacen masana'antu iri-iri. Waɗannan hatimai suna zuwa ta hanyoyi daban-daban, gami da zoben O, zoben V, zoben U, zoben Y, hatimin murabba'i, hatimin da aka ƙera musamman, da wankunan wanki.
Robar Polyurethane, wani nau'in polymer na roba, yana ɗaure gibin da ke tsakanin robar halitta da robobi na gargajiya. Ana amfani da ita sosai wajen sarrafa matsin lamba na takardar ƙarfe, robar polyurethane da ake magana a kai galibi nau'in simintin polyester ne. An haɗa ta ne daga adipic acid da ethylene glycol, wanda ke haifar da polymer mai nauyin kwayoyin halitta kusan 2000. Ana ƙara yin wannan polymer don samar da prepolymer tare da ƙungiyoyin ƙarshen isocyanate. Sannan ana haɗa prepolymer ɗin da MOCA (4,4′-methylenebis(2-chloroaniline)) sannan a jefa shi cikin molds, sannan a bi ta hanyar vulcanization na biyu don samar da samfuran robar polyurethane tare da matakan tauri daban-daban.
Ana iya tsara taurin hatimin roba na polyurethane don biyan takamaiman buƙatun sarrafa ƙarfe, daga 20A zuwa 90A akan sikelin taurin Shore.
Muhimman Halayen Aiki:
- Juriya ta Musamman a Kan Sawa: Robar polyurethane tana da mafi girman juriyar sawa a tsakanin dukkan nau'ikan roba. Gwaje-gwajen dakin gwaje-gwaje sun nuna cewa juriyar sawa ta ninka ta roba ta halitta sau 3 zuwa 5, inda aikace-aikacen gaske ke nuna juriya sau 10.
- Babban Ƙarfi da Juriya: A cikin kewayon taurin Shore A60 zuwa A70, robar polyurethane tana nuna ƙarfi mai yawa da kuma kyakkyawan sassauci.
- Ingantaccen Shafawa da Shafawa da Girgiza: A zafin ɗaki, abubuwan roba na polyurethane na iya sha kashi 10% zuwa 20% na kuzarin girgiza, tare da ƙaruwar sha a yawan mitoci na girgiza.
- Kyakkyawan Juriyar Mai da Sinadarai: Robar polyurethane ba ta da ɗanɗanon man fetur kuma ba ta da tasiri sosai ga man fetur (kamar man fetur da fetur) da man fetur na injiniya (kamar man fetur da man shafawa), tana da ƙarfi fiye da robar nitrile da ta fi ta sauran. Duk da haka, tana da kumburi sosai a cikin barasa, esters, da hydrocarbons masu ƙamshi.
- Babban Daidaito na Karya: Yawanci sama da 0.5.
- Ƙarin Halaye: Kyakkyawan juriya ga ƙarancin zafin jiki, juriya ga ozone, juriya ga radiation, rufin lantarki, da kuma halayen mannewa.
Aikace-aikace:
Ganin cewa yana da kyawawan halaye na zahiri da na inji, ana amfani da robar polyurethane akai-akai a aikace-aikace masu inganci, gami da samfuran da ke jure lalacewa, kayan da ke jure mai mai ƙarfi, da kuma kayan da ke jure tauri da ƙarfin modulus. Yana samun amfani mai yawa a masana'antu daban-daban:
- Injina da Motoci: Ana kera abubuwan birki masu yawan mita, sassan roba masu hana girgiza, maɓuɓɓugan roba, haɗin gwiwa, da sassan injinan yadi.
- Kayayyakin da ke Jure wa Mai: Suna samar da na'urorin bugawa, hatimi, kwantena na mai, da hatimin mai.
- Muhalli Masu Tsanani: Ana amfani da su a cikin bututun jigilar kaya, layin kayan niƙa, allo, matattara, tafin takalma, ƙafafun tuƙi na gogayya, bushings, faifan birki, da tayoyin keke.
- Matsewar Sanyi da Lanƙwasawa: Yana aiki a matsayin kayan aiki don sabbin hanyoyin matsewa da lanƙwasawa da sanyi, yana maye gurbin na'urorin ƙarfe waɗanda ke ɗaukar lokaci da tsada.
- Robar Kumfa: Ta hanyar amfani da martanin ƙungiyoyin isocyanate tare da ruwa don sakin CO2, ana iya samar da robar kumfa mai sauƙi tare da kyawawan halayen injiniya, wanda ya dace da rufi, rufin zafi, hana sauti, da aikace-aikacen hana girgiza.
- Aikace-aikacen Likitanci: Ana amfani da shi a cikin sassan roba masu aiki, tasoshin jini na roba, fatar roba, bututun jiko, kayan gyara, da aikace-aikacen hakori.
Lokacin Saƙo: Satumba-17-2025