Incazelo enemininingwane yezici zerabha ye-nitrile
Irabha ye-Nitrile iyi-copolymer ye-butadiene ne-acrylonitrile, futhi okuqukethwe kwayo kwe-acrylonitrile okuhlanganisiwe kunomthelela ophawulekayo ezicini zayo zemishini, izici zokunamathela, nokumelana nokushisa.Ngokwezici ze-butadiene kanye ne-acrylonitrile monomers, i-butadiene ine-polarity ebuthakathaka, kuyilapho i-acrylonitrile ine-polarity enamandla.Ngakho-ke, okuqukethwe kwe-acrylonitrile okwengeziwe kuchungechunge oluyinhloko lwerabha ye-nitrile, kubi nakakhulu ukuguquguquka kweketango eliyinhloko.Ukuphakama kwezinga lokushisa eliphansi lokushisa, kubi kakhulu ukusebenza kokumelana nezinga lokushisa eliphansi;Ngakolunye uhlangothi, i-acrylonitrile inokumelana nokushisa okuhle ngoba ngesikhathi senqubo yokushisa, i-acrylonitrile kurabha ye-nitrile ingakwazi ukukhiqiza izinto ezincibilikayo zotshwala ukuze zivimbele ukuwohloka kwe-oxidative eshisayo.Ngakho-ke, ukumelana nokushisa kwerabha ye-nitrile kuyanda ngokunyuka kokuqukethwe kwe-acrylonitrile;Phakathi naleso sikhathi, ngenxa ye-polarity factor ye-acrylonitrile, ukwandisa okuqukethwe kwe-acrylonitrile kungathuthukisa amandla okunamathela werabha ye-nitrile.Ngakho-ke, kubaluleke kakhulu ukuhlola okuqukethwe kwe-acrylonitrile eboshiwe ku-nitrile rubber.
Okuqukethwe kwe-acrylonitrile kunomthelela omkhulu ekusebenzeni kwe-NBR.Okuqukethwe kwe-acrylonitrile kwerabha ye-acrylonitrile nitrile evamile kuphakathi kuka-15% no-50%.Uma okuqukethwe kwe-acrylonitrile kukhuphukela ngaphezu kuka-60%, kuzoqina, kufane nesikhumba, futhi ayisenazo izakhiwo zenjoloba.
1. Ukumelana nowoyela kanye nokumelana ne-solvent: Irabha ye-Nitrile inokumelana nowoyela kunjoloba evamile.Irabha ye-nitrile imelana kakhulu namafutha asuselwa ku-petroleum, benzene, nezinye izincibilikisi ezingezona ze-polar kuneraba yemvelo, irabha ye-styrene butadiene, irabha ye-butyl, namanye amarabha angewona ama-polar, kodwa futhi ingcono kunerabha ene-chlorine epholile.Kodwa-ke, irabha ye-nitrile inokumelana kabi nowoyela we-polar kanye nezincibilikisi (njenge-ethanol), kodwa ukumelana kabi nenjoloba engeyona indawo.
2. Izici zokusebenza komzimba: Irabha ye-Nitrile iyisakhiwo esingahleliwe se-nitrile copolymers engacwebezeli ngaphansi kwengcindezi.Ngakho-ke, izici ezingokomzimba nezomshini zenjoloba ehlanzekile ye-nitrile yenjoloba iyafana naleyo yerabha ye-styrene nitrile, ephansi kakhulu kunerabha yemvelo.Ngemuva kokwengeza izihlungi eziqinisayo ezifana ne-carbon black kanye ne-phenolic resin, amandla aqinile enjoloba ye-nitrile evuvukele angafinyelela izinga lenjoloba yemvelo, ngokuvamile eba ngu-24.50mpa.Njengoba okuqukethwe kwe-polarity ye-NBR kukhula, ukuguquguquka kweketango le-macromolecular kuncipha, amandla e-athomu phakathi kwama-molecule ayanda, amabhondi aphindwe kabili ayancipha, futhi iketango le-macromolecular alinaturated, okuholela ochungechungeni lwezinguquko zokusebenza.Uma okuqukethwe kwe-ACN kuphakathi kuka-35% no-40%, kuyindawo ebalulekile yokuwohloka kokuminyanisa, ukunwebeka, nobulukhuni ku-75 ℃.Uma ukumelana nowoyela kuhlangabezana nezidingo, izinhlobo ezine-ACN ezingaphansi kuka-40% kufanele zisetshenziswe ngangokunokwenzeka.Ukunwebeka kwerabha ye-nitrile kuncane kunokwerabha yemvelo kanye nerabha ye-styrene butadiene.Ukunwebeka kwe-NBR kuhlobene eduze nezinga lokushisa.Uma kuqhathaniswa ne-NBR, amathuba okushisa nokunwebeka ayanda.Ngakho-ke, irabha ye-nitrile ifaneleka kakhulu ekukhiqizeni ama-shock absorbers anokumelana nowoyela okuphezulu.Izici zokunwebeka kwerabha ye-nitrile ezishintshayo ngokuboshwa kwe-acrylonitrile
3. Ukuphefumula: Irabha ye-Nitrile inokuqina komoya okungcono kunerabha yemvelo kanye nerabha ye-styrene butadiene, kodwa ayilungile njengerabha ye-polysulfide, efana nerabha ye-butyl.
4. Ukusebenza kwezinga lokushisa eliphansi: Irabha ye-Nitrile inokusebenza okungekuhle kwezinga lokushisa eliphansi kurabha evamile.Ukusebenza kwezinga lokushisa eliphansi kuhlobene nokuqukethwe kwe-acrylonitrile, futhi izinga lokushisa lokuguqulwa kwengilazi likhuphuka ngokunyuka kokuqukethwe kwe-acrylonitrile.Inganciphisa izinga lokushisa lokushintsha kwengilazi yerabha ye-nitrile futhi ithuthukise ukusebenza kwayo kwezinga lokushisa eliphansi.
5. Ukumelana nokushisa: Irabha ye-Nitrile inokumelana nokushisa okungcono kunerabha yemvelo kanye nerabha ye-styrene butadiene.Ngokukhetha ifomula efanele, imikhiqizo yerabha ye-nitrile ingasetshenziswa ngokuqhubekayo ku-120 ℃;Ingakwazi ukumelana namafutha ashisayo ku-150 ℃;Ngemva kokucwiliswa emafutheni ku-191 ℃ amahora angu-70, isenamandla okugoba.6. Ukumelana ne-ozone: Irabha ye-Nitrile inokumelana ne-ozone okubi futhi ngokuvamile ithuthukiswa ngokwengeza ama-agent amelana ne-ozone.Kodwa-ke, imikhiqizo ehlangana namafutha ngesikhathi sokusetshenziswa ithambekele ekususeni i-ozone ukumelana nokulahlekelwa ukumelana kwayo ne-ozone.Kuhlanganiswe ne-PVC, umphumela ubalulekile.
7. Ukumelana namanzi: Irabha ye-Nitrile inokumelana kwamanzi okungcono.Ukuphakama kokuqukethwe kwe-acrylonitrile, kungcono ukumelana namanzi.
8. Ukusebenza kwe-insulation kagesi: Irabha ye-Nitrile inokusebenza okungekuhle kwe-insulation kagesi ngenxa ye-polarity yayo.Ingeyerabha ye-semiconductor futhi akufanele isetshenziswe njengento yokufaka ugesi.
9. Ukumelana nokuguga: I-NBR ngaphandle kwama-ejenti alwa nokuguga inokumelana nokuguga okubi kakhulu, kuyilapho i-NBR enama-ejenti alwa nokuguga inokumelana nokuguga nokushisa okungcono kunerabha yemvelo.Ngemuva kokuguga kwe-oxidative eshisayo, amandla enjoloba yemvelo ancipha ngokuphawulekayo, kodwa ukwehla kwerabha ye-nitrile empeleni kuncane kakhulu.
Ukumelana nokushisa kwerabha ye-nitrile kuyafana nokumelana kwayo nokuguga.Lapho i-L0000H iguga ku-100 ℃, ubude bayo busengadlula u-100%.Imikhiqizo yenjoloba ye-Nitrile ingasetshenziswa isikhathi esifushane ku-130 ° C futhi ingasetshenziswa emazingeni okushisa aphezulu ngaphandle kwe-oxygen.Ngakho-ke, irabha ye-nitrile inokumelana nokushisa okungcono kunerabha yemvelo kanye nerabha ye-styrene butadiene.Ngisho nangaphezu kwerabha ye-chloroprene.Irabha ye-Nitrile inesimo sezulu esifanayo kanye nokumelana ne-ozone njengerabha yemvelo, kodwa iphansi kancane kunerabha yemvelo.Ukwengeza i-polyvinyl chloride kurabha ye-nitrile kungathuthukisa ukumelana nesimo sezulu kanye nokumelana ne-ozone.
10. Ukumelana nemisebe:
Irabha ye-nitrile ingase yonakaliswe ngaphansi kwemisebe yenuzi, okuholela ekwandeni kokuqina kanye nokuncipha kobude.Kodwa-ke, uma kuqhathaniswa namanye amarubha okwenziwa, i-NBR ayithinteki kangako emisebeni, futhi i-NBR enokuqukethwe kwe-acrylonitrile engu-33% -38% inokumelana okuhle nemisebe.Ngemuva kwemisebe yenuzi, amandla aqinile e-NBR anokuqukethwe okuphezulu kwe-acrylonitrile angakhuphuka ngo-140%.Lokhu kungenxa yokuthi i-NBR enokuqukethwe okuphansi kwe-acrylonitrile izokwehliswa ngaphansi kwemisebe, kuyilapho i-NBR enokuqukethwe okuphezulu kwe-acrylonitrile izobhekana nokusabela okuphambanayo ngaphansi kwemisebe yenuzi.
Ithebula Lokusebenza le-Nitrile Rubber
| isifinyezo | isici | inhloso |
| I-copolymer etholwe nge-lotion polymerization ye-butadiene ne-acrylonitrile ibizwa ngokuthi irabha ye-butadiene acrylonitrile, noma irabha ye-nitrile ngamafuphi.Okuqukethwe kwayo kuyinkomba ebalulekile ethinta izakhiwo zerabha ye-nitrile.Futhi yaziwa ngokumelana nowoyela okuhle kakhulu. | Ukumelana nowoyela kungcono kakhulu, futhi akuvuvukali emafutheni angewona ama-polar futhi abuthakathaka.Ukushisa nokusebenza kwe-oxygen ukuguga kungcono kunama-rubber ajwayelekile njengemvelo kanye ne-butadiene styrene. Inokumelana okuhle nokugqokwa, ukumelana nokugqokwa okungama-30% -45% ngaphezu kwerabha yemvelo. Ukumelana nokugqwala kwamakhemikhali kungcono kunerabha yemvelo, kodwa ukumelana kwayo nama-acid oxidizing aqinile akulungile. Ukunwebeka okungekuhle, ukumelana nokubanda, ukuguquguquka okuguquguqukayo, ukumelana nezinyembezi, nokukhiqizwa kokushisa okuphezulu ngenxa yokuguquka. Ukusebenza kabi kwe-insulation kagesi, okuyingxenye yerabha ye-semiconductor, ayifanele ukusetshenziswa njengento yokufaka ugesi. Ukungazweli kahle kwe-ozone. Ukusebenza kabi kokucubungula. | Isetshenziselwa ukwenza amapayipi enjoloba, amarola enjoloba, ama-gaskets avalayo, amalayini ethangi, amalayini ethangi lamafutha endiza, namaphakethe kawoyela amakhulu ahlangana nowoyela.Ingakhiqiza amabhande okuthutha okuthutha izinto ezishisayo. |
Izinto ezibonakalayo zerabha yokwenziwa evame ukusetshenziswa
| Igama lerabha | Izifinyezo | Ibanga lokuqina (HA) | Izinga lokushisa elisebenzayo (℃) |
| Irabha ye-Nitrile | I-NBR | 40-95 | -55 ~ 135 |
| Irabha ye-nitrile ene-hydrogen | I-HNBR | 50-90 | -55 ~ 150 |
| I-Fluororubber | I-FKM | 50-95 | - 40-250 |
| Irabha ye-ethylene propylene | I-EPDM | 40-90 | -55 ~ 150 |
| irabha ye-silicon | I-VMQ | 30-90 | -100 ~ 275 |
| Irabha ye-fluorosilicone | I-FVMQ | 45-80 | - 60 ~ 232 |
| Irabha yeChloroprene | CR | 35-90 | - 40 ~ 125 |
| Irabha yePolyacrylate | I-ACM | 45-80 | -25 ~ 175 |
| i-polyurethane | I-AU/EU | 65-95 | -80 ~ 100 |
| Irabha ye-Perfluoroether | I-FFKM | 75-90 | -25 ~ 320 |
Isikhathi sokuthumela: Apr-07-2024
