Hydrogenated nitrile roba (HNBR) ne yafi amfani a aikace-aikace da bukatar high da kuma low zafin jiki tsauri Properties da kyau tsufa juriya, bayan kumburi a cikin mai da ruwa Bayan kumburi a cikin mai da ruwaye, HNBR ne yafi amfani a aikace-aikace bukatar high tsauri Properties a high da low yanayin zafi da kyau tsufa juriya. Aikace-aikace na yau da kullun da ke buƙatar waɗannan kaddarorin sune bel na lokaci, babban matsi mai ƙarfi da jujjuyawar takarda. Kayayyakin roba da aka yi amfani da su suna fuskantar yanayi mai matuƙar buƙata kuma galibi ana fuskantar firgita akan yanayin zafi da mitoci da yawa. Gwaje-gwaje na al'ada da ake amfani da su don siffanta ƙayyadaddun kaddarorin kayan gabaɗaya ana yin su ne a cikin ɗaki.
Yayin da waɗannan gwaje-gwajen na iya siffanta kayan da ba a cika da kyau ba, ma'auni a yanayin zafi ba sa nuna tasirin zafin jiki akan hulɗar filler-monomer. ma'amalar filler da filler-polymer da tasirin su akan kaddarorin kayan a yanayin zafi sosai. Don polymers da aka tsara musamman don aikace-aikacen zafin jiki mai girma, fahimtar tasirin zafin jiki akan kayan fasaha na kayan aiki yana da mahimmanci don ingantaccen fili.
A cikin wannan takarda, an bincika tasirin zafin jiki akan kaddarorin fasaha na cike rubbers, yana mai da hankali kan nau'in filler, adadin sa, da hulɗar filler tare da HNBR da hydrogenated carboxylated nitrile butadiene rubber (HXNBR) polymers.
Don wannan dalili, wannan takarda tana kwatanta ƙarfafawa (N330) da mara ƙarfi (N990) baƙar fata na carbon tare da silica (VulcasilN). Za'a iya canza yanayin silica duka biyu (filler surface hydrophobic) da kuma rayayye (filler surface hydrophobic da bonded zuwa polymer). Ƙara yawan mahadi kuma suna amfani da filaye na monomeric, irin su zinc diacrylate (ZAD), wanda za'a iya yin polymerized a wurin yayin ɓarna don inganta kayan abu. Waɗannan sabbin ''fillers'' da hulɗar su da matrix polymer ba a yi nazarin su ba tukuna dangane da yanayin zafi da kaddarorin dogaro da mitoci. Sabbin masu cikawa da mu'amalarsu da matrix polymer ba a yi nazarin yanayin zafi da kaddarorin da suka dogara da mitar ba.
Dangane da kayan injina da ƙarfin injina na mahaɗan HNBR masu ɓarna da marasa ƙarfi, an yi nazarin filaye daban-daban (baƙar carbon, silica da ZDA) don cikawa. da ZDA) cike da daidaitattun HNBR da HXNBR rubbers an bincika su dangane da dogaro da zafin jiki na abubuwan ƙarfafawa.
Ragewar modules tare da ƙara yawan zafin jiki ga duk robar da ba a bayyana ba (sai dai tsarin da aka cika silica) sakamakon dogaro da zafin jiki na danko na matrix polymer. Nau'in da adadin filler a cikin ɗaure kawai yana ƙayyade matakin ƙarfafawa kuma ba shi da wani tasiri akan raguwar dogaro da zafin jiki a cikin ma'aunin ɗaure.
Don mannen silica-cikakken siliki, haɗin gwiwar ɓangarorin silica yana ƙayyade halayen da ke dogara da zafin jiki. Idan an bi da silica saman tare da silica alkane magani don cimma hydrophobicity, da coalescence na silica barbashi an hana. A babban nakasawa amplitudes, ƙarfafa duk carbon baki da silica-cike mahadi za a iya bayyana a matsayin hydrodynamic ƙarfafa kawai.
Idan aka yi amfani da ZDA azaman mai filler, ba a sami wani sakamako mai ƙarfafawa ba a cikin mahaɗan roba da ba a bayyana ba saboda ZDA ba ta riga ta zama polymerized ba kuma tana aiki ne kawai azaman ƙarancin ƙwayar ƙwayar ƙwayar ƙwayar cuta. Abubuwan da ke kunshe da ZDA suna da ƙananan danko a kowane nau'i, yana nuna kyawawan kaddarorin sarrafawa.
Kwatanta kaddarorin injina masu ƙarfi da kaddarorin damuwa-kan-dangi na roba mai ɓarna ya nuna cewa fili na roba mai cike da ZDA mai ƙarfi na HXNBR yana da ƙarfi mafi ƙarfi da matsakaicin ƙayyadaddun kayan aikin injiniya (danniya da haɓakawa a lokacin hutu) ya ragu tare da ƙara yawan zafin jiki ga duk masu ɗaure. Ƙarfin hulɗar tsakanin filler surface da polymer matrix yana haɓaka tasirin zafin jiki akan abubuwan ƙarfafawa. Ko da yake hulɗar ionic tsakanin ZDA da HXNBR ƙungiyoyin carboxyl sun kara yawan damuwa na karaya, waɗannan hulɗar ionic ba su da wani tasiri a kan yanayin zafin jiki na damuwa. Wannan yana ba da shawarar cewa ma'amalar ionic ta injina mai ƙarfi tsakanin ZDA da matrix polymer mai aiki (HXNBR) buƙatu ne don ingantattun kayan inji da haɓaka kayan aikin roba tare da ƙarancin asarar hysteresis a ƙarƙashin yanayin nakasa mai ƙarfi.
