Yuav ua li cas yog Halogen{0}} Cov Kev Xav Tau Dawb cuam tshuam rau kev xaiv ntawm cov rwb thaiv tsev thiab cov Gaskets hauv cov phaj cua sov?
Tso lus
PVC thiab FEP cov ntaub ntawv yog halogenated thiab muaj hluav taws xob zoo thiab thermal zoo, tab sis thaum hlawv lawv tsim cov pa phem thiab corrosive. Ntau tus neeg yuav khoom tam sim no tau qhia meej txog halogen- cov paib cua sov dawb, uas tau tsav los ntawm ib puag ncig kev cai lij choj thiab kev ua lag luam kev cia siab rau kev lag luam.
Kev siv cov halogen hauv cov paib cua sov
Halogens feem ntau yog tam sim no nyob rau hauv ntau yam ntaub ntawv siv nyob rau hauv zus tau tej cov cua sov daim hlau, tshwj xeeb tshaj yog nyob rau hauv cov khoom xws li hlau thiab cable rwb thaiv tsev, connector vaj tse, gaskets thiab adhesives. PTFE yog theoretically halogenated tsis tau yog feem ntau tsis suav nrog vim nws tshwj xeeb inertness thiab tsis yog -flammable xwm. Txawm li cas los xij, PVC thiab FEP feem ntau ua haujlwm tab sis muaj qhov tsis zoo nyob rau hauv uas lawv tsim cov pa phem halogenated thaum tshav kub kub lossis thaum kub hnyiab, uas ua rau muaj kev phom sij loj rau kev noj qab haus huv. Yog li ntawd, muaj ntau txoj kev lag luam kom tsis txhob muaj cov ntaub ntawv no, tshwj xeeb tshaj yog rau cov uas tsis yog - wetted qhov chaw uas yuav raug kub los yog hluav taws kub.
Cov cheeb tsam twg raug cuam tshuam?
Hlau thiab Cable Rwb thaiv tsev: PVC yog siv rau rwb thaiv tsev vim nws cov nqi qis thiab nws cov insulating zoo. Tab sis PVC muaj cov tshuaj chlorine thiab yog li ntawd poob rau hauv halogen- cov kev cai pub dawb. FEP thiab lwm yam halogenated polymers muaj kev txwv tsis pub siv thiab tuaj yeem hlawv thiab tso cov tshuaj lom.
Gaskets thiab Seals Gaskets, tshwj xeeb yog Viton lossis EPDM, muaj teeb meem heev. Viton yog halogenated (muaj fluorine). EPDM yog halogen dawb thiab feem ntau siv rau nws cov txiaj ntsig ib puag ncig.
Connector Housings thiab Adhesives: Halogen- lwm txoj kev pub dawb kuj tseem raug siv los hloov cov ntaub ntawv xws li PVC thiab FEP hauv cov vaj tsev txuas thiab cov nplaum kom ua tau raws li cov cai rau kev ruaj khov.
Lub laub rau halogen- cov ntaub ntawv tsis pub dawb thiab cov khoom siv gasket feem ntau yog rau cov khoom siv uas tuaj yeem ntes hluav taws lossis degrade ntawm qhov kub thiab txias, xws li xaim thiab yas.
Halogen{0}}Txoj kev xaiv pub dawb
Ib puag ncig kev ntxhov siab thiab cov neeg siv khoom tshwj xeeb yog tsav kev siv ntau dua halogen dawb lwm yam xws li:
Hlau rwb thaiv tsev:
Hlau rwb thaiv tsev tej zaum yuav PVC los yog lwm yam. XLPE ( cross linked polyethylene ) lossis silicone roj hmab yog lwm txoj hauv kev rau PVC . Ob qho khoom siv muaj cov yam ntxwv zoo hluav taws xob, siab thermal stability thiab tsis muaj halogen. XLPE, tshwj xeeb, muaj lub koob npe nrov rau cov cua sov thiab tshuaj lom neeg zoo dua li PVC.
Gaskets: 1.
EPDM yog ib qho nrov halogen- cov khoom siv gasket pub dawb uas paub txog nws qhov kev ua tau zoo dua thiab ua haujlwm rau cov cua sov thiab tshuaj. Viton yog fluorinated thiab halogenated thiab EPDM yog ib qho kev ruaj ntseg thiab ib puag ncig zoo rau Viton uas tsis muaj kev cuam tshuam rau kev ua haujlwm.
PTFE Cheebtsam
PTFE yog halogenated tab sis txawm li cas los xij yog cov khoom xaiv rau qhov kub thiab txias los yog cov khoom siv tshuaj lom neeg, xws li gaskets hauv kev sib cuag nrog cov chaw kub lossis cov tshuaj hnyav. Tab sis PTFE qhov zoo tshaj plaws tshuaj stability ua rau nws irreplaceable rau ntau daim ntawv thov thiab cov kev pab cuam lub luag hauj lwm tshaj kev txhawj xeeb txog nws halogen concentration.
Cov qauv thiab cov kev cai rau Halogen-Dawb
Tus qauv rau halogen- cov ntaub ntawv dawb yog IEC 61249-2-21 uas teev cov kev txwv rau chlorine, bromine thiab tag nrho cov halogens. Cov lus qhia tshwj xeeb qhia tias cov khoom tsis muaj halogen yuav tsum muaj:
Chlorine <900 ppm
Bromine<900ppm
Tag nrho cov halogens tsawg dua 1500 ppm
Nyob rau lub sijhawm no, EU Txoj Cai Txwv Tsis Pub Muaj Tshuaj Muaj Kab Mob (RoHS) tsis muaj kev txwv thoob ntiaj teb rau cov khoom siv halogenated. Txawm li cas los xij, kev yeem ecolabels, cov neeg siv khoom tshwj xeeb thiab cov cai tswj hwm kev lag luam tau txhawb kom siv dav dua ntawm halogen- cov khoom pub dawb.
Kev sib piv ntawm Halogenated thiab Halogen Dawb Cov Khoom Siv rau Cov Cuab Yeej Cuab Yeej
Hom Khoom Halogenated Khoom Halogen Dawb Lwm Txoj Kev
Hlau Rwb thaiv tsev PVC Hla - txuas Polyethylene (XLPE) Silicone Rubber
Gaskets Viton (nrog fluorine) EPDM
High -Tsem Cheebtsam FEP, PTFE PTFE (tso tseg rau siab temp resistance)
Connector Housings PVC, FEP Polyurethane, PA (Polyamida)
Kev xav kawg
Ua kom tau raws li qhov yuav tsum tau muaj halogen dawb yog ib qho teeb meem ntawm kev ua tib zoo xaiv cov khoom, tshwj xeeb yog cov xaim thiab cov gaskets, tsis muaj kev cuam tshuam kev ua haujlwm. Kev tsav tsheb kom tshem tawm PVC, FEP thiab lwm yam halogenated tebchaw los ntawm ib puag ncig yog hloov kev lag luam cua sov. Nrog rau cov neeg siv khoom ib puag ncig cov txheej txheem tau dhau los ua ntau dua, cov neeg tsim khoom yuav tsum ua raws li qhov xav tau ntau ntxiv rau kev ruaj khov halogen- cov phaj cua sov dawb. Cov ntaub ntawv no tsis tsuas yog pab kom ua tau raws li cov qauv, tab sis kuj yog ib qho tseem ceeb sib txawv hauv kev sib tw ua lag luam ntawm kev ruaj ntseg.
