EPDM khoom yog dab tsi? -Kev tsom xam qhov tob ntawm cov yam ntxwv thiab kev siv ntawm EPDM roj hmab
EPDM (ethylene-propylene-diene monomer) yog cov roj hmab hluavtaws uas muaj huab cua zoo heev, ozone thiab tshuaj tiv thaiv, thiab siv dav hauv tsheb, kev tsim kho, hluav taws xob thiab lwm yam lag luam. Ua ntej nkag siab txog dab tsi EPDM yog tsim los ntawm, nws yuav tsum nkag siab txog nws cov qauv molecular tshwj xeeb thiab cov txheej txheem tsim khoom kom nkag siab zoo dua nws cov khoom thiab siv.
1. Tshuaj muaj pes tsawg leeg thiab molecular qauv ntawm EPDM
EPDM roj hmab tau txais nws lub npe los ntawm nws cov khoom tseem ceeb: ethylene, propylene thiab diene monomers. Cov monomers tsim elastic polymer chains los ntawm cov tshuaj tiv thaiv copolymerisation. Ethylene thiab propylene muab cov cua sov zoo heev thiab oxidation tsis kam, thaum lub diene monomers tso cai rau EPDM los ntawm kev sib txuas los ntawm vulcanisation lossis peroxide, ntxiv dag zog thiab ua haujlwm ntawm cov khoom.
2. Cov yam ntxwv tseem ceeb ntawm EPDM
Vim nws cov tshuaj lom neeg muaj pes tsawg leeg, EPDM muaj ntau yam khoom zoo heev uas ua rau nws sawv hauv ntau qhov chaw.EPDM muaj huab cua zoo heev thiab UV tiv thaiv, uas txhais tau hais tias nws tuaj yeem raug tshav ntuj rau lub sijhawm ntev. tsis muaj deterioration.EPDM kuj muaj ozone kuj zoo heev, uas tso cai rau nws tswj nws cov kev ua tau zoo nyob rau hauv hnyav ib puag ncig yam tsis muaj cracking.
Lwm qhov tseem ceeb yog nws cov tshuaj tiv thaiv, tshwj xeeb tshaj yog rau cov kua qaub, alkalis thiab ntau cov kuab tshuaj polar. Yog li ntawd, EPDM feem ntau yog siv nyob rau hauv cov xwm txheej uas yuav tsum tau mus sij hawm ntev raug rau cov tshuaj.EPDM muaj ntau yam kev khiav hauj lwm kub, thiab muaj peev xwm ua hauj lwm ib txwm ntawm -40 ° C thiab 150 ° C, uas ua rau nws tshwj xeeb tshaj yog dav siv nyob rau hauv lub tsheb. kev lag luam, xws li qhov rais seals, radiator hoses, thiab lwm yam.
3. EPDM daim ntawv thov nyob rau hauv ntau yam lag luam
Kev siv dav dav ntawm EPDM yog ntaus nqi rau nws cov khoom siv ntau yam thiab lub cev zoo heev. Hauv kev lag luam automotive, EPDM feem ntau yog siv rau hauv kev tsim cov ntsaws ruaj ruaj, qhov rooj ntsaws ruaj ruaj, lub tshuab cua wipers thiab radiator hoses. Ua tsaug rau lawv cov cua sov thiab kev laus tsis kam, cov khoom no khaws lawv cov elasticity thiab kev ua haujlwm ntev, txhim kho lub neej kev pabcuam ntawm lub tsheb.
Hauv kev tsim kho kev lag luam, EPDM tau siv dav hauv ru tsev waterproofing, qhov rooj thiab qhov rais ntsaws ruaj ruaj thiab lwm yam kev siv uas yuav tsum tau waterproofing thiab UV tsis kam. Nws cov huab cua zoo ua haujlwm thiab ua kom yooj yim ua kom cov qauv kev ruaj ntseg thiab kev sib khi ua haujlwm ntawm cov tsev.EPDM kuj tseem siv rau hauv cov ntaub ntawv sheathing ntawm cov xov hlau thiab cov cables, muab cov hluav taws xob rwb thaiv tsev zoo thiab tshuaj lom neeg.
4. EPDM kev tiv thaiv ib puag ncig thiab kev tsim kho kom ruaj khov
Nyob rau hauv cov ntsiab lus tam sim no ntawm kev xav tau kev tiv thaiv ib puag ncig nruj zuj zus, EPDM tseem muaj kev txhawj xeeb vim nws qhov kev tiv thaiv ib puag ncig thiab muaj peev xwm txhim kho kom ruaj khov. EPDM yog cov khoom siv rov ua dua tshiab, cov txheej txheem tsim khoom yog cov pa phem tsawg thiab cov khoom pov tseg, raws li niaj hnub no cov neeg xav tau kev tiv thaiv ib puag ncig. Los ntawm kev txhim kho txuas ntxiv ntawm cov txheej txheem tsim khoom, lub zog thiab kev siv ntawm EPDM kuj tseem raug txo qis, ua rau kev txhim kho kev lag luam ruaj khov.
Xaus
EPDM khoom yog dab tsi? Nws yog cov khoom siv roj hmab hluavtaws nrog kev ua haujlwm zoo thiab ntau yam kev siv. Nrog nws cov huab cua tsis kam, tshuaj tiv thaiv thiab ib puag ncig tus phooj ywg, nws ua lub luag haujlwm tseem ceeb hauv ntau yam lag luam. Txawm hais tias nyob rau hauv kev lag luam tsheb, kev tsim kho kev lag luam, lossis kev lag luam hluav taws xob thiab hluav taws xob, EPDM tau dhau los ua cov khoom siv tsis tseem ceeb vim nws qhov kev ua tau zoo.