Izitywina ze-polyurethane ezijikiweyo zizixhobo zokutywina ezigqwesileyo ezinokumelana okugqwesileyo kokunxiba, ukubola kunye namaqondo obushushu aphezulu kwaye zisetyenziswa kwiintlobo ngeentlobo zezicelo zamashishini.Eli nqaku liza kuchaza iimpawu ezisisiseko, iindawo zokusetyenziswa kunye neenzuzo zokujikwa kwe-polyurethane seals.Izitywina zikwabizwa ngokuba ngamatywina okanye amatywina e-oyile, iqulunqwe yinxalenye enye okanye iinxalenye ezininzi zesigqubuthelo esimilise okwesangqa, esimiswe kwi-shaft, sithwele iseti yamakhonkco, kunye nenye iseti yamakhonkco okanye i-gaskets yokunxibelelana okanye yenza i-gap emxinwa ye-labyrinth, dlala. indima yokwahlula i-oyile kunye negesi engamanzi, ukuthintela ukuphuphuma kwe-oyile okanye ukutyhubela kunye nokuhlasela kwezinto zangaphandle.Kwangaxeshanye, inokuthwala uxinzelelo, ngaphakathi koluhlu oluthile kunye nendima emibini yokuthwala uxinzelelo kunye nokutywinwa.Iitywina ezijikiweyo ze-polyurethane, ezine-resistant-resistant, i-oyile, i-asidi, i-ozone, ukuguga, ubushushu obuphantsi, ukukrazula, impembelelo kunye nezinye iimpawu, ukuguqula i-polyurethane itywina amandla okuxhasa umthwalo, isetyenziswa ngokubanzi kwiinkalo ezahlukeneyo.Isishwankathelo, izitywina ze-polyurethane ezijikiweyo zineenzuzo ezininzi kwaye zinokusetyenziswa ngokubanzi kwiinkalo ezahlukeneyo zoshishino.Ngoko ke, xa ukhetha izinto zokutywinwa, ukujika kwe-polyurethane izitywina zilungile.
Impumelelo ye-polyurethane njengesixhobo sokutywina yafika ekuqaleni kweminyaka yoo-1980, xa uninzi lwabavelisi bevelisa imathiriyeli ekrwada ye-polyurethane eyayixhathisa ngakumbi kwi-hydrolysis.Ezi zixhobo zitsha zavelisa amatywina e-polyurethane ahlala eguquguqukayo kuxinzelelo oluphezulu kunye nokuya kuthi ga kwi-110 ° C, ukuphumeza ukusebenza kakuhle kokutywinwa kunye nobomi obude bokusebenza kune-polyurethane yasekuqaleni (eyayixhathisa kuphela ukushisa okuphezulu kwe-+80 ° C).Esi siphumo sivula umnyango wosetyenziso lwehydraulic koomatshini abahambahambayo.
Ixesha lokuposa: Apr-18-2023
