UBUSHINWA NBR & Polyurethane URUGENDO RWA NINGBO BODI SEALS CO., LTD

Nubwo reberi ya nitrile butadiene (NBR) ari yo yiganjemo kashe ya turbine y’umuyaga mu myaka ibarirwa muri za mirongo, iterambere mu gushiraho kashe ya polyurethane, gutunganya no gushushanya bigenda byangiza umwanya wa NBR mu nganda.Biragaragara ko ibintu byingirakamaro birimo kwihanganira kwambara, guhuza amazi, kurwanya ozone, imbaraga za mashini, hamwe nubushobozi bwo kugumana iyo mitungo yose mubushyuhe buke.
Polyurethane yahindutse ibikoresho byiza byo gufunga ibyingenzi / generator, birebire na transvers.Ariko, gusimbuza gusa ibikoresho muburyo buriho ntabwo bihagije.Ikidodo kigomba kuba cyateguwe hifashishijwe polyurethane.
Bumwe mu buryo bwo gusuzuma imyambarire ya polyurethanes ni ukunyura ikizamini gisanzwe cyo kwambara ingoma nka ASTM D5963.Ubu buryo busanzwe bukoreshwa mugusuzuma reberi, ariko kandi ikoreshwa kuri polyurethane, cyane cyane iyo ugereranije igipimo cyo kwambara.Hano hepfo wambara indangagaciro kubikoresho bitandukanye byageragejwe na kashe ya sisitemu muri Cleveland.Menya ko NBR na HNBR bafite ARI igera kuri 1.5, mugihe polyurethanes ifite ARI ya 4 kugeza 8. Ibi ni iterambere ryikubye inshuro esheshatu.
Polyurethane ikomeza indangagaciro za ARI mugihe na nyuma yo guhura namazi atandukanye, cyane cyane amavuta ashingiye kumavuta.Bumwe mu buryo bwo kubimenya ni ugusaza ASTM D5963 kwambara ingero mumazi kuri 100 ° C muminsi 90 (80 ° C kumazi ashingiye kumazi) hanyuma ugasubiramo ikizamini buri minsi 30.Hasi nibisubizo bisanzwe, ariko kwemeza birasabwa kuri buri mazi.
Igicapo 3. Kugumana ARI muri NBR na polyurethane irwanya hydrolysis nyuma yo gusaza mumavuta yubutare yatoboye kuri 100 ° C.
Nubwo ibisobanuro byerekana guhuza n'amazi yarangiye, kwihutisha ibizamini byo gusaza (cyangwa imyaka yumurimo) bigomba kugena imikorere maremare nigihe gihamye cyibikoresho byanduye.Sisitemu Ikimenyetso cya sisitemu yo guhuza amazi muminsi 90 aho kuba ikizamini gisanzwe cyamasaha 168 kuko Ikimenyetso cya sisitemu gihora kigaragaza impinduka zikomeye mumitungo yingenzi nyuma yamasaha 168 yamazi.
Polyurethane yihariye yerekana uburyo bwiza bwo guhangana n’amazi ugereranije na NBR mu mavuta akoreshwa cyane mu nganda zikoresha ingufu z'umuyaga.Hasi nimbonerahamwe ihuza aya mavuta azwi.
NBR izwiho kwibasirwa na ozonolysis, aribwo molekile ya ozone isenya imiti ya NBR idahagije.Gucika Ozone birasanzwe mugihe nitrile butadiene reberi (NBR) ikorerwa na deformasiyo nkeya.Igisubizo kimwe nugutera ibishashara muri NBR, ugakora barrière anti-ozone irinda NBR.Kubwamahirwe, ibishashara ntabwo bihindura imiti ya NBR.Niba NBR ihuye nibidukikije bikuraho ibishashara, birashobora kongera kwangirika.Bimwe mubidasanzwe polyurethanes ikoreshwa mubidodo byingufu zumuyaga mubisanzwe birwanya ozone.
Modulus ya elastike, imbaraga no kuramba bya polyurethane bikubye inshuro ebyiri cyangwa eshatu kurenza NBR.Nkigisubizo, kashe ya polyurethane irashobora kwihanganira ihinduka rikomeye ryimashini no kwihanganira imitwaro ihanitse.
Ubusanzwe NBR ifite modulus ya 10-15 MPa n'imbaraga zingana na 20 MPa.Polyurethanes nyinshi zifite modulus ya elastike ya 45-60 MPa n'imbaraga zingana na 50-60 MPa.Ibi bivuze ko ibikoresho bitoroshye kurenza NBR, bivuze kugumana imiterere myiza no kurwanya cyane imitwaro.
Muri turbine z'umuyaga, ubushyuhe bwo hejuru ntabwo ari ikibazo.Nyamara, ukurikije ahantu hamwe nuburebure, ubushyuhe buke bwa -40 ° C ntibusanzwe.Ubusanzwe NBR ifite ubushyuhe buke bwo gukora -20 ° C, kandi isesengura ryimashini ryerekanye ko ingufu nyinshi zumuyaga polyurethanes zidatewe nubushyuhe bugera kuri -40 ° C.
Polyurethane ni ihitamo risanzwe rya kashe yumuyaga bitewe nubushobozi bwayo bukomeye, kurwanya ozone nziza, kugabanuka kwubushyuhe n'ubushyuhe buke.Hasi hari imiryango ibiri yo gusaba polyurethane ikwiranye neza.Ishusho ibumoso yerekana ihindagurika ryigana hamwe nibiranga polyurethane ifite kashe.Ishusho iburyo yerekana kashe ya sisitemu Ikidodo kizunguruka, ikimenyetso nyamukuru gifata ubudahwema gusiga amavuta mu kigega uko icyuma kizunguruka.
Niba ushaka gutanga umusanzu kuri Windpower, nyamuneka twandikire: https://www.bdseals.com cyangwa www.bodiseals.com.NINGBO BODI SEALS CO., LTD itanga ubwoko bwubwoko butandukanye bwo mu rwego rwo hejuru, orings ,Gaskets .