Ceev cov rooj sib tham
| Yam zoo | FKM / FPM (piv txwv li, Viton®) | EPDM (Ethylene Propylene diene Monomer) |
|---|---|---|
| Khoom Hom | Fluoroelastomer(High -} Kev Ua Haujlwm Tshwj Xeeb Roj Hmab) | Polyolefin Roj Hmab(General - hom phiaj roj hmab) |
| Qhov ntsuas kub ntau | -20℃rau {+200℃(-4℃f rau +392℃f) | -40 Qib rau {+130℃(-40℃f rau +266℃f) |
| Tshuaj Kuj | Zoo heev rau cov roj, cov roj, acids, thiab kev txhoj puab heev. | Zoo heev rau cov dej kub, Chav, thiab cov kuab tshuaj polar. |
| Huab cua & Ozone | Zoo tshaj | Zoo tshaj |
| Lub Zog Tseem Ceeb | High - temp kev lag luam nrog kev tiv thaiv kom cov roj thiab tshuaj lom neeg. | Huab cua, ozone, thiab cov kua tiv taus ntawm tus nqi tsawg. |
| Thawj qhov tsis muaj zog | Tus nqi siab heev; Tsis zoo tsawg - kub hloov. | Kev tsis zoo rau txhua cov roj av -} based roj thiab roj. |
| Tus nqi | Siab heev(Cov ntaub ntawv hwm tau zoo) | Tswj kav(Nqi -}}} Siv tau zoo) |
Cov ncauj lus qhia ntxaws
1. Tshuaj lom neeg tiv thaiv (qhov txiav txim siab)
Qhov no yog qhov tseem ceeb tshaj plaws thiab feem ntau hais cov kev xaiv.
FKM / FPM yog "Tshuaj Lom Zem":
Txawj nrog: Hydrocarbons-} roj, roj, roj (roj av (roj av), ntau cov hluavtaws hluavtaws ntxiv, thiab ntau yam hluavtaws muaj kuab heev thiab cov kuab tshuaj.
Vim li cas?Nws cov molecular backuminium muaj cov carbon poly}}} Cov tsiaj fluorine Brounds, uas yog Inert thiab o.
EPDM yog "Chav thiab kws tshaj lij huab cua":
Txawj nrog: Polar cov tshuaj- dej kub, chav dej, cov kua alkali (glycoling), glycoling / greases, thiab ketones / cawv.
Tsis nrog: Hydrocarbons{{0- Nws yuav oge thiab demrade sai nyob rau hauv petroleum {}} roj, thiab roj. Nov yog nws qhov tseem ceeb tshaj plaws.
Txoj cai yooj yim:Yog tias daim ntawv thov cuam tshuam nrogRoj lossis roj, koj yuav tsum siv FKM / FPMCov. Yog tias nws cuam tshuamChav dej lossis dej kub, koj yuav tsum siv EPDM.
2. Kub tsis kam
FKM / FPM: superior high - temp kev ua tau zoo.
Nws tuaj yeem ua haujlwm txuas ntxiv ntawm qhov kub heev (txog 200℃/ 392℃f, nrog cov qhab nia tshwj xeeb mus siab dua). Qhov no ua rau nws zoo tagnrho rau cov chaw ib puag ncig xws li lub cav bays.
Tsis muaj zog:Nws muaj qhov tsis zoo qis - kub hloov, ua txhav hauv qab kwv yees li {}}}}} 4℃f). Tshwj xeeb tsawg-qhov kub-qib muaj tab sis yog kev lag luam tawm.
EPDM: Zoo tag nrho - nyob ib ncig ntawm thiab zoo dua qis- temp.
Nws muaj qhov zoo sab sauv - kub txwv ntawm ib puag ncig 130℃(haum rau kev siv cua txias thiab cov khoom siv cua sov.
Lub zog:Nws tseem yoog raws li qhov kub tsawg dua, feem ntau nqis rau -40℃(-40℃f) lossis hauv qab no.
3. Nqi
FKM / FPM:Tseem ceeb kim dua. Nws yog cov khoom ntiag tug, thiab nws tus nqi tsuas yog muaj kev ncaj ncees thaum nws qhov siab siab-}} kev ua haujlwm yuav tsum muaj.
EPDM:Tus nqi heev {- Cov khoom siv tau zoo rau cov ntaub ntawv tsis pub dhau nws lub hnab ntawv ua tau. Nws muaj txiaj ntsig zoo rau qhov tsis -} cov roj ib puag ncig.
Yuav Ua Li Cas Xaiv: Qhov kev txiav txim siab yooj yim
Cov Kev Siv Cov Ntawv Siv
FKM / FPM siv nyob rau hauv:
Automotive:Roj Injector O {- rings, Valve Hlwv Ntsaws Ruaj Ruaj, Kis Ntsaws Ruaj Ruaj.
Aerospace:Roj System Ntsia, O - rings rau cov tshuab hydraulic.
Muaj:Ntsaws thiab gaskets hauv cov nroj tsuag ua haujlwm.
EPDM yog siv nyob rau hauv:
Automotive:Coolant hoses, radiator ntim, lub qhov rooj thiab qhov rai av sov.
Kev Tsim Kho:Roofing wharbranes, qhov rai gaskets.
Cov khoom siv:Ntsaws rau tshuab ntxuav tais diav thiab tshuab ntxhua khaub ncaws.
Tag
Xav txog lawv raws li cov kws tshaj lij rau kev ua haujlwm txawv tag nrho:
Xaiv cov FKM / FPM (FPM (Viton®) thaum koj qhov kev tawm tsam yog qhov kub kub ua ke nrog kev nthuav tawm cov roj, cov roj, lossis cov tshuaj txhoj puab heev.Tus nqi siab yog tus nqi ntawm qhov kev ua tau zoo no.
Xaiv EPDM thaum koj thawj cov nyom yog huab cua, ozone, dej kub, chav dej, lossis cov kua noj polar xws li cov kua dej nres.Nws yog tus nqi - Txoj Cha yeej Zoo rau cov chaw ib puag ncig no.
Siv cov khoom tsis raug ua rau kev ua tsis tiav sai: EPDM foob nyob rau hauv cov roj kab yuav sweet thiab tsis sib xws rau hauv cov dej kub tsis tsim nyog thiab kim tshaj.
