Tig polyurethane seals txheej txheem

Turned polyurethane seals yog cov khoom siv sealing zoo heev uas muaj kev tiv thaiv zoo heev rau hnav, corrosion thiab kub kub thiab siv rau ntau yam kev lag luam.Kab lus no yuav piav qhia txog cov yam ntxwv tseem ceeb, thaj chaw thov thiab qhov zoo ntawm cov ntsaws ruaj ruaj polyurethane.Cov ntsaws ruaj ruaj tseem hu ua cov ntsaws ruaj ruaj lossis roj ntsaws ruaj ruaj, yog tsim los ntawm ib lossis ob peb qhov ntawm lub nplhaib-zoo li lub hau npog, tsau rau hauv cov ncej, bearing ib txheej ntawm cov nplhaib, thiab lwm txheej ntawm cov nplhaib los yog gaskets tiv tauj los yog tsim qhov sib txawv ntawm qhov nqaim labyrinth, ua si. lub luag hauj lwm nyob rau hauv cais cov roj thiab kua roj, tiv thaiv cov roj overflow los yog los ntawm thiab txawv teb chaws khoom ntxeem tau.Nyob rau tib lub sijhawm, nws kuj tuaj yeem dais siab, nyob rau hauv ib qho kev sib tw nrog lub luag haujlwm ntawm kev coj tus kheej thiab kev sib khi.Tig polyurethane ntsaws ruaj ruaj, nrog hnav-resistant, roj, acid, ozone, laus, tsis tshua muaj kub, tsim kua muag, cuam tshuam thiab lwm yam ntxwv, tig polyurethane seals load txhawb nqa peev xwm, dav siv nyob rau hauv ntau yam teb.Hauv cov ntsiab lus, tig polyurethane ntsaws ruaj ruaj muaj ntau yam zoo thiab tuaj yeem siv dav hauv ntau yam kev lag luam.Yog li ntawd, thaum xaiv cov khoom sib khi, tig polyurethane seals yog qhov kev xaiv zoo.

Kev tawg ntawm polyurethane raws li cov khoom siv foob tau tuaj thaum xyoo 1980s, thaum muaj coob tus neeg tsim khoom tsim cov khoom siv polyurethane uas tiv taus hydrolysis ntau dua.Cov ntaub ntawv tshiab no tsim cov ntsaws ruaj ruaj polyurethane uas tseem hloov tau thaum muaj kev kub ntxhov thiab mus txog +110 ° C, ua tiav kev sib khi zoo dua thiab ua haujlwm ntev dua li qub polyurethane (uas tsuas yog tiv taus kub ntawm +80 ° C).Qhov txiaj ntsig no qhib qhov rooj rau kev siv hydraulic hauv cov tshuab txawb.