Irabha ye-nitrile ikhiqizwa i-emulsion polymerization ye-butadiene ne-acrylonitrile.Irabha ye-Nitrile ikhiqizwa ikakhulukazi i-emulsion polymerization esezingeni eliphansi lokushisa.Inokumelana nowoyela okuhle kakhulu, ukumelana nokugqoka okuphezulu, ukumelana nokushisa okuhle nokunamathela okuqinile..Ukungalungi kwayo ukumelana nezinga lokushisa eliphansi eliphansi, ukumelana ne-ozone okungekuhle, izakhiwo zikagesi ezingezinhle, nokunwebeka kancane kancane.Irabha ye-nitrile isetshenziswa kakhulu ekwenzeni imikhiqizo yenjoloba emelana nowoyela.1) Isingeniso Ibizwa nangokuthi i-NBR.Irabha yokwenziwa ekhiqizwa yi-copolymerization ye-butadiene ne-acrylonitrile.Iyirabha yokwenziwa enokumelana kahle nowoyela (ikakhulukazi uwoyela we-alkane) nokumelana nokuguga.Kunezinhlobo ezinhlanu zokuqukethwe kwe-acrylonitrile (%) ku-nitrile rubber: 42-46, 36-41, 31-35, 25-30, kanye ne-18-24.Okuqukethwe kwe-acrylonitrile okuningi, kungcono ukumelana nowoyela, kodwa ukumelana nokubanda kuzokwehla ngokufanele.Ingasetshenziswa isikhathi eside emoyeni ku-120°C noma emafutheni ku-150°C.Ngaphezu kwalokho, futhi inokumelana okuhle kwamanzi, ukuqina komoya nokusebenza okuhle kakhulu kokubopha.Isetshenziswa kakhulu ekukhiqizeni imikhiqizo ehlukahlukene yenjoloba engamelana nowoyela, ama-gaskets ahlukene amelana nowoyela, ama-gaskets, imikhono, ukupakishwa okuguquguqukayo, amapayipi athambile, amarola enjoloba okuphrinta nokudaya, izinto zerabha zentambo, njll., futhi ziba semqoka ezimbonini ezifana nezimoto. , izindiza, i-petroleum, nokukopisha izinto ezinwebekayo.
1. Ukusebenza Irabha ye-Nitrile ibizwa nangokuthi irabha ye-butadiene-acrylonitrile, ebizwa ngokuthi i-NBR, enesisindo se-molecular esingaba ngu-700,000.Okumhlophe-kumhlophe kuya kokuphuzi okukhanyayo okukhulu noma okuyimpuphu okuqinile, ukuminyana okuhlobene 0.95-1.0.Irabha ye-Nitrile inokumelana okuhle kakhulu nowoyela, okwesibili ngemuva kwerabha ye-polysulfide kanye nerabha ye-fluorine, futhi inokumelana okuhle kakhulu nokugqokwa kanye nokuqina komoya.Ukungalungi kwerabha ye-nitrile ukuthi ayimelani ne-ozone nephunga elimnandi, i-halogenated hydrocarbons, ama-ketone kanye ne-ester solvents, ngakho-ke ayifanelekeli izinto zokuvikela.Ukumelana nokushisa kungcono kunokwerabha ye-styrene-butadiene ne-neoprene, futhi ingasebenza ku-120 ° C isikhathi eside.Ukuqina komoya kungokwesibili kunerabha ye-butyl.Ukusebenza kwerabha ye-nitrile kuthinteka okuqukethwe kwe-acrylonitrile.Njengoba okuqukethwe kwe-acrylonitrile kwanda, amandla aqinile, ukumelana nokushisa, ukumelana nowoyela, ukuqina komoya nokuqina kwanda, kodwa ukuqina nokumelana nokubanda kuncipha.Irabha ye-Nitrile inokumelana ne-ozone okungekuhle kanye nezakhiwo zokuvikela ugesi, kodwa ukumelana kahle kwamanzi.
2 Ukusetshenziswa Okuyinhloko Irabha ye-Nitrile isetshenziselwa kakhulu ukwenza imikhiqizo engamelana nowoyela, njengamapayipi amelana nowoyela, amateyipu, ama-diaphragm enjoloba kanye nezikhwama ezinkulu zikawoyela, njll. Ivamise ukusetshenziselwa ukwenza imikhiqizo ebunjiwe ehlukahlukene ukumelana nowoyela, njenge-O- izindandatho, izimpawu zikawoyela, izinkomishi zesikhumba, ama-diaphragm, ama-valve , izifutho, ipayipi lerabha, izimpawu, igwebu, njll., nazo zisetshenziselwa ukwenza amashidi enjoloba nezingxenye ezingagugi.
Amathiphu angu-3 okuthuthukisa ukusebenza kwe-nitrile rubber Ukumelana Amafutha: Ngokwandisa okuqukethwe kwe-acrylonitrile, ukumelana kwayo nowoyela kungathuthukiswa, kodwa ukumelana nokubanda kuzokwehla ngokufanele.Ingasetshenziswa isikhathi eside emoyeni ku-120°C noma emafutheni ku-150°C.Ngaphezu kwalokho, futhi inokumelana okuhle kwamanzi, ukuqina komoya nokusebenza okuhle kakhulu kokubopha.Isetshenziswa kakhulu ekukhiqizeni imikhiqizo ehlukahlukene yenjoloba engamelana nowoyela, ama-gaskets ahlukene amelana nowoyela, ama-gaskets, imikhono, ukupakishwa okuguquguqukayo, amapayipi athambile, amarola enjoloba okuphrinta nokudaya, izinto zerabha zentambo, njll., futhi ziba semqoka ezimbonini ezifana nezimoto. , izindiza, i-petroleum, nokukopisha izinto ezinwebekayo.Ukumelana nokubanda okuthuthukisiwe nokumelana nezinga lokushisa eliphansi: Irabha ye-Nitrile inokumelana nokubanda okubi, futhi ukumelana kwayo nokubanda kuba kubi kakhulu ngokwanda kokuqukethwe kwe-acrylonitrile.Ngokusebenzisa irabha ye-nitrile enokuqukethwe okuhlukile kwe-acrylonitrile nokulungisa inhlanganisela yama-ejenti ahlukene e-anti-aging, ama-ejenti aqinisayo nama-plasticizers, ifomula yenjoloba ye-nitrile ekwazi ukumelana nokubanda enokumelana okuhle kwamafutha kanye nokumelana nokukhathala ingatholakala.
Isikhathi sokuthumela: Jun-16-2023