Irabha yokwenziwa yenye yezinto ezintathu eziphambili ezenziweyo kwaye isetyenziswa kakhulu kwiinkalo ezahlukeneyo zoshishino, ukhuselo lwesizwe, uthutho kunye nobomi bemihla ngemihla. Irabha yokwenziwa esebenza kakuhle kwaye isebenza kakuhle sisixhobo esiphambili esiphambili esifunekayo kuphuhliso lwexesha elitsha, kwaye ikwangumthombo obalulekileyo weqhinga kweli lizwe.
Izixhobo zerabha ezikhethekileyo zokwenziwa zibhekisa kwizinto zerabha ezahlukileyo kwizinto zerabha eziqhelekileyo kwaye zineempawu ezikhethekileyo ezifana nokumelana nobushushu obuphezulu nobuphantsi, ukumelana nokwaluphala, ukumelana nokukhupha umoya, kunye nokumelana neekhemikhali, ikakhulu irabha ye-nitrile ene-hydrogenated (HNBR), i-thermoplastic vulcanizate (TPV), irabha yeSilicone, irabha ye-fluorine, irabha ye-fluorosilicone, irabha ye-acrylate, njl. Ngenxa yeempawu zayo ezikhethekileyo, izixhobo zerabha ezikhethekileyo ziye zaba zizixhobo ezibalulekileyo ekuphuhlisweni kwezicwangciso eziphambili zesizwe kunye namacandelo asakhulayo afana neenqwelo-moya, ukhuselo lwesizwe kunye noshishino lomkhosi, ulwazi lwe-elektroniki, amandla, okusingqongileyo, kunye nolwandle.
1. Irabha ye-nitrile ene-hydrogenated (HNBR)
Irabha ye-nitrile ene-hydrogenated yirabha etyebileyo kakhulu efunyenwe ngokukhetha i-hydrogenating iiyunithi ze-butadiene kwikhonkco lerabha ye-nitrile ngenjongo yokuphucula ukumelana nobushushu kunye nokumelana nokuguga kwerabha ye-nitrile butadiene (NBR). , uphawu lwayo oluphambili kukuba ingasetyenziswa ixesha elide kwi-150 ℃, kwaye isenokugcina iipropati eziphezulu zomzimba nezoomatshini kubushushu obuphezulu, ezinokuhlangabezana neemfuno ezikhethekileyo zokuxhathisa ubushushu obuphezulu kunye nokumelana neekhemikhali zezinto kwiimoto, kwi-aerospace, kwintsimi yeoyile nakwezinye iindawo. Iimfuno, ezisetyenziswa kakhulu, njengezitywino zeoyile zeemoto, izinto zenkqubo yepetroli, amabhanti okuhambisa iimoto, iibhokisi zokubamba iibhola kunye neepiston zodaka, iirola zerabha zokuprinta kunye nezelaphu, izitywino zeenqwelo moya, izinto zokufunxa uloyiko, njl.
2. I-Thermoplastic Vulcanizate (TPV)
Ii-thermoplastic vulcanizates, ezifinyezwa njengee-TPV, ziluhlobo olukhethekileyo lwee-thermoplastic elastomers eziveliswa yi-"dynamic vulcanization" yee-immiscible blends ze-thermoplastics kunye nee-elastomers, oko kukuthi ukukhethwa kwesigaba se-elastomer ngexesha lokuxubana kwe-melt kunye ne-thermoplastic Sexual cross-linking. Ukuxuba ngaxeshanye kwesigaba serabha phambi kwe-agent edibanisayo (mhlawumbi ii-peroxides, ii-diamines, ii-sulfur accelerators, njl.njl.) ngexesha lokuxubana kwe-melt kunye ne-thermoplastics kubangela i-dynamic vulcanizate continuous thermoplastic matrix eyenziwe yirabha edibeneyo esasazekileyo. Amasuntswana akwisigaba, i-dynamic vulcanization ikhokelela ekwandeni kwe-viscosity yerabha, ekhuthaza i-phase inversion kwaye ibonelele nge-morphology yesigaba esine-multiphase kwi-TPV. I-TPV inokusebenza okufana nerabha yokuseta i-thermosetting kunye nesantya sokucubungula ii-thermoplastics, ezibonakala kakhulu kumlinganiselo wokusebenza ophezulu/wamaxabiso, uyilo oluguquguqukayo, ubunzima obulula, uluhlu olubanzi lobushushu bokusebenza, ukucutshungulwa okulula, umgangatho wemveliso kunye nozinzo olulinganayo kunye nokuphinde kusetyenziswe, kusetyenziswa kakhulu kwiindawo zeemoto, ukwakhiwa kwamandla, izitywini kunye nezinye iindawo.
3. Irabha yesilicone
Irabha yesilicone luhlobo olukhethekileyo lwerabha yokwenziwa eyenziwe nge-polysiloxane ethe tyaba exutywe nezihluzi zokuqinisa, izihluzi ezisebenzayo kunye nezongezo, kwaye iba yi-elastomer efana nenethiwekhi emva kokuxuba phantsi kweemeko zokufudumeza kunye noxinzelelo. Inokumelana okuhle kakhulu nobushushu obuphezulu nobuphantsi, ukumelana nemozulu, ukumelana ne-ozone, ukumelana ne-arc, ukufakelwa kombane, ukumelana nokufuma, ukungena komoya okuphezulu kunye ne-inertia ye-physiological. Inezicelo ezininzi kumashishini anamhlanje, e-elektroniki kunye nombane, iimoto, ulwakhiwo, ezonyango, ukhathalelo lomntu kunye nezinye iinkalo, kwaye ibe yinto ebaluleke kakhulu kwishishini leenqwelo moya, ukhuselo kunye nomkhosi, ukwenziwa kwemveliso ngobuchule nakwezinye iinkalo.
4. Irabha yeFluorine
Irabha yeFluorine ibhekisa kwirabha equlathe i-fluorine equlethe iiathom ze-fluorine kwiiathom zekhabhoni zetyathanga eliphambili okanye kwiityathanga ezisecaleni. Iimpawu zayo ezikhethekileyo zimiselwa ziimpawu zesakhiwo seathom zeFluorine. Irabha yeFluorine ingasetyenziswa kwi-250°C ixesha elide, kwaye ubushushu obuphezulu benkonzo bunokufikelela kwi-300°C, ngelixa ubushushu obulinganiselweyo benkonzo ye-EPDM yendabuko kunye nerabha ye-butyl buyi-150°C kuphela. Ukongeza kubushushu obuphezulu, i-fluororubber inokumelana kakuhle neoyile, ukumelana neekhemikhali, ukumelana ne-asidi kunye ne-alkali, kwaye ukusebenza kwayo okupheleleyo yeyona nto ilungileyo phakathi kwazo zonke izixhobo zerabha ze-elastomer. Isetyenziswa kakhulu kukumelana neoyile yeerokethi, imijukujelwa, iinqwelomoya, iinqanawa, iimoto kunye nezinye izithuthi. Iindawo zenjongo ekhethekileyo ezifana nokutywina kunye nemibhobho enganyangekiyo neoyile zizinto ezibalulekileyo kuqoqosho lwesizwe kunye namashishini okhuselo lwesizwe kunye nomkhosi.
5. Irabha ye-acrylate (ACM)
Irabha ye-acrylate (ACM) yi-elastomer efunyenwe nge-copolymerization ye-acrylate njenge-monomer ephambili. Ikhonkco layo eliphambili yi-carbon chain egcweleyo, kwaye amaqela alo asecaleni ngamaqela e-polar ester. Ngenxa yesakhiwo sayo esikhethekileyo, ineempawu ezininzi ezintle, ezinje ngokuxhathisa ubushushu, ukuxhathisa ukuguga, ukuxhathisa ioyile, ukuxhathisa i-ozone, ukuxhathisa i-UV, njl.njl., iipropati zayo zoomatshini kunye neepropati zokucubungula zingcono kunerabha ye-fluororubber kunye ne-silicone, kwaye ukuxhathisa ubushushu, ukuxhathisa ukuguga kunye nokuxhathisa ioyile zibalaseleyo kwirabha ye-nitrile. I-ACM isetyenziswa kakhulu kwiindawo ezahlukeneyo ezinobushushu obuphezulu kunye nokuxhathisa ioyile, kwaye ibe yinto yokutywina ephuhliswe kwaye yakhuthazwa lishishini leemoto kwiminyaka yakutshanje.
Ixesha lokuthumela: Sep-27-2022
