1. Hydrogenated nitrile roj hmab (HNBR)
Hydrogenated nitrile roj hmab yog cov khoom siv roj hmab uas muaj kuab heev uas tau txais los ntawm kev xaiv hydrogenating lub butadiene chav nyob ntawm nitrile roj hmab saw forging rau lub hom phiaj ntawm kev txhim kho qhov kub thiab txias tsis kam ntawm nitrile roj hmab (NBR). Nws cov yam ntxwv tseem ceeb tshaj plaws yog tias nws tuaj yeem siv tau ntev ntawm 150 degree thiab tseem tuaj yeem tswj hwm lub cev thiab cov cuab yeej cuab tam ntawm qhov kub thiab txias. Nws tuaj yeem ua tau raws li qhov tshwj xeeb uas yuav tsum tau ua ntawm lub tsheb, aerospace, roj teb thiab lwm yam kev lag luam rau cov khoom siv kom tiv taus qhov kub thiab txias. Nws yog siv ntau thiab ntau dua, xws li tsheb roj foob, cov khoom siv roj hauv tsheb, tsheb thauj mus los siv, drilling tuav cov thawv thiab av nkos pistons, luam ntawv thiab textile roj hmab rollers, aerospace seals, cov ntaub ntawv poob siab, thiab lwm yam.
2. Thermoplastic vulcanizate (TPV)
Thermoplastic vulcanizate, hu ua TPV, yog ib hom tshwj xeeb ntawm thermoplastic elastomer, uas yog tsim los ntawm "dynamic vulcanization" ntawm non-miscible blends ntawm thermoplastics thiab elastomers, uas yog, xaiv crosslinking ntawm lub elastomer theem thaum lub sij hawm yaj tov nrog cov thermoplastic. Thaum lub sij hawm melting nrog thermoplastics, cov roj hmab theem yog vulcanized ib txhij nyob rau hauv lub xub ntiag ntawm ib tug crosslinking neeg sawv cev (uas tej zaum yuav yog peroxide, diamine, sulfur accelerator, thiab lwm yam), uas ua rau cov tsim ntawm hais nyob rau hauv lub nruam thermoplastic matrix theem ntawm dynamic vulcanized. cov khoom muaj li ntawm dispersed crosslinked roj hmab. Dynamic vulcanization ua rau muaj kev nce hauv roj hmab viscosity, yog li txhawb kev hloov pauv theem thiab muab ntau theem morphology hauv TPV. TPV muaj ob qho tib si kev ua haujlwm ntawm thermosetting roj hmab thiab kev ua haujlwm ceev ntawm thermoplastics. Nws yog tsuas yog manifested nyob rau hauv kev ua tau zoo / nqi piv, saj zawg zog tsim, lub teeb yuag, dav kev khiav hauj lwm kub ntau, yooj yim ua, ruaj khov khoom zoo thiab loj, thiab recyclability. Nws yog dav siv nyob rau hauv automotive qhov chaw, fais fab kev tsim kho, seals thiab lwm yam teb.
3. Silicone roj hmab
Silicone roj hmab yog ib hom tshwj xeeb ntawm cov roj hmab hluavtaws uas yog mesh-structured elastomer tsim los ntawm kev sib xyaw linear polysiloxane nrog cov khoom siv ntxiv, cov khoom siv ua haujlwm thiab cov khoom siv ntxiv thiab vulcanizing nyob rau hauv cov cua kub thiab siab. Nws muaj qhov kub thiab txias tsis kam, huab cua tsis kam, ozone tsis kam, arc tsis kam, hluav taws xob rwb thaiv tsev, noo noo tsis kam, huab cua permeability siab thiab physiological inertness. Nws yog dav siv hauv kev lag luam niaj hnub, hluav taws xob thiab hluav taws xob, tsheb, kev tsim kho, kev kho mob, kev saib xyuas tus kheej thiab lwm yam kev lag luam, thiab tau dhau los ua ib qho tseem ceeb ntawm cov khoom siv ua haujlwm siab hauv aerospace, kev tiv thaiv hauv teb chaws, kev tsim khoom ntse thiab lwm yam.
4. Fluororubber
Fluororubber hais txog cov khoom siv roj hmab uas muaj fluorine uas muaj fluorine atoms ntawm cov pa roj carbon atoms ntawm cov saw tseem ceeb lossis cov saw hlau sab. Nws cov khoom tshwj xeeb yog txiav txim los ntawm cov yam ntxwv ntawm cov fluorine atoms. Fluororrubber tuaj yeem siv tau ntev ntawm 250 degree, thiab qhov siab tshaj plaws siv tau ncav cuag 300 degree, thaum lub siab tshaj plaws siv kub ntawm cov tsoos EPDM roj hmab thiab butyl roj hmab tsuas yog 150 degree. Ntxiv nrog rau qhov kub thiab txias tsis kam, fluororubber kuj tseem muaj cov roj ua haujlwm zoo, tshuaj lom neeg tsis kam, acid thiab alkali tsis kam. Nws muaj qhov ua tau zoo tshaj plaws ntawm txhua yam khoom siv roj hmab elastomer. Nws yog tsuas yog siv nyob rau hauv tshwj xeeb siv teb xws li roj-resistant seals thiab roj-resistant pipelines ntawm rockets, missiles, aircraft, nkoj, tsheb thiab lwm yam tsheb. Nws yog ib qho tseem ceeb ntawm cov khoom siv tseem ceeb rau kev lag luam hauv teb chaws thiab kev tiv thaiv lub teb chaws.
5. Acrylic roj hmab (ACM)
Acrylic roj hmab (ACM) yog ib qho elastomer tau los ntawm copolymerization ntawm acrylic ester ua lub ntsiab monomer. Nws cov saw tseem ceeb yog cov saw hlau saturated carbon thiab sab pawg yog pawg polar ester. Vim nws cov qauv tshwj xeeb, nws muaj ntau yam zoo heev, xws li kub tsis kam, kev laus ua haujlwm, roj tsis kam, ozone tsis kam, UV tsis kam, thiab lwm yam. Nws cov khoom siv hluav taws xob thiab kev ua haujlwm zoo dua li fluororubber thiab silicone roj hmab, thiab nws cov cua sov ua haujlwm, aging kuj thiab roj kuj zoo dua li nitrile roj hmab. ACM yog dav siv nyob rau hauv ntau yam kub-kub thiab roj-resistant ib puag ncig, thiab tau los ua ib tug sealing cov ntaub ntawv uas lub automotive kev lag luam tau tsom rau kev tsim thiab txhawb nyob rau hauv xyoo tas los no.