Cable sheath (tseem hu ua lub tsho sab nrauv los yog sheath) yog txheej txheej sab nraud ntawm cable, optical cable, lossis hlau, yog qhov tseem ceeb tshaj plaws hauv cov kab thaiv kev tiv thaiv sab hauv kev ruaj ntseg, tiv thaiv cable los ntawm sab nraud tshav kub, txias, ntub, ultraviolet, ozone, los yog tshuaj lom neeg thiab kev puas tsuaj thaum lub sij hawm thiab tom qab installation. Cable sheathing tsis yog los hloov qhov kev txhawb zog sab hauv lub cable, tab sis lawv kuj tuaj yeem muab kev tiv thaiv siab heev. Tsis tas li ntawd, lub cable sheath kuj tuaj yeem txhim kho cov duab thiab daim ntawv ntawm tus neeg xyuas pib, nrog rau cov txheej txheem tiv thaiv (yog tias tam sim no), yog li txo qis kev cuam tshuam nrog cable lub electromagnetic compatibility (EMC). Qhov no yog ib qho tseem ceeb kom ntseeg tau tias kev sib kis ntawm lub zog, teeb liab, lossis cov ntaub ntawv nyob rau hauv lub cable lossis xaim. Sheathing tseem ua lub luag haujlwm tseem ceeb hauv kev ua haujlwm ntawm cov khoom siv kho qhov muag thiab cov xov hlau.
Muaj ntau ntau hom cable sheath ntaub ntawv, feem ntau siv cable sheath ntaub ntawv yog -crosslinked polyethylene (XLPE), polytetrafluoroethylene (PTFE), fluorinated ethylene propylene (FEP), perfluoroalkoxy resin (PFA), polyurethane (PUR),polyethylene (PE), thermoplastic elastomer (TPE) thiabPolyvinyl chloride (PVC), Lawv txhua tus muaj cov yam ntxwv sib txawv.
Kev xaiv cov ntaub ntawv raw rau cable sheathing yuav tsum xub coj mus rau hauv tus account lub adaptability rau ib puag ncig thiab compatibility ntawm kev siv cov connectors. Piv txwv li, qhov chaw txias heev yuav xav tau cable sheathing uas tseem hloov tau ntawm qhov kub thiab txias heev. Xaiv cov khoom sheathing txoj cai yog qhov tseem ceeb rau kev txiav txim siab qhov zoo tshaj plaws optical cable rau txhua daim ntawv thov. Yog li ntawd, nws yog ib qho tseem ceeb kom to taub raws nraim li cas lub hom phiaj ntawm optical cable los yog hlau yuav tsum tau raws li thiab yuav tsum tau ua raws li qhov yuav tsum tau ua.
Polyvinyl Chloride (PVC)yog cov khoom siv feem ntau siv rau cable sheathing. Nws yog tsim los ntawm polyvinyl chloride raws li cob, ntxiv stabilizer, plasticizer, inorganic fillers xws li calcium carbonate, additives thiab lubricants, thiab lwm yam, los ntawm kev sib tov thiab kneading thiab extrusion. Nws muaj lub cev zoo, txhua yam thiab hluav taws xob, thaum muaj huab cua zoo thiab tshuaj lom neeg ruaj khov, nws tuaj yeem txhim kho nws cov kev ua tau zoo los ntawm kev ntxiv cov khoom sib txawv, xws li nplaim hluav taws kub, tiv thaiv tshav kub thiab lwm yam.
Txoj kev tsim ntawm PVC cable sheath yog ntxiv PVC hais rau lub extruder thiab extrude lawv nyob rau hauv kub thiab siab los tsim ib tug tubular cable sheath.
Qhov zoo ntawm PVC cable tsho yog pheej yig, yooj yim rau txheej txheem thiab nruab, thiab ntau yam kev siv. Nws yog feem ntau siv nyob rau hauv qis-voltage cables, kev sib txuas lus cables, kev tsim kho nyob ntawm tej thiab lwm yam teb. Txawm li cas los xij, qhov kub thiab txias tsis kam, tiv thaiv txias, UV tiv thaiv thiab lwm yam khoom ntawm PVC cable sheathing yog qhov tsis muaj zog, muaj cov khoom tsis zoo rau ib puag ncig thiab tib neeg lub cev, thiab muaj ntau yam teeb meem thaum siv rau qhov chaw tshwj xeeb. Nrog rau kev txhim kho ntawm tib neeg kev paub txog ib puag ncig thiab kev txhim kho cov khoom siv kev ua tau zoo, cov kev xav tau siab dua tau muab tso rau pem hauv ntej rau cov ntaub ntawv PVC. Yog li ntawd, nyob rau hauv qee qhov tshwj xeeb, xws li aviation, aerospace, nuclear fais fab thiab lwm yam, PVC cable sheathing yog ua tib zoo siv.
Polyethylene (PE)yog ib yam khoom siv cable sheath. Nws muaj cov khoom siv zoo thiab tshuaj lom neeg ruaj khov, thiab muaj cov cua sov zoo, tiv taus txias thiab huab cua tsis kam. PE cable sheath tuaj yeem txhim kho los ntawm kev ntxiv cov khoom ntxiv, xws li tshuaj tua kab mob, UV absorbers, thiab lwm yam.
Txoj kev tsim khoom ntawm PE cable sheath yog zoo ib yam li PVC, thiab PE hais tau ntxiv rau lub extruder thiab extruded nyob rau hauv kub thiab siab los tsim ib tug tubular cable sheath.
PE cable sheath muaj qhov zoo ntawm ib puag ncig kev laus tiv thaiv thiab UV tiv thaiv, thaum tus nqi qis, dav siv hauv cov khoom siv kho qhov muag, tsis tshua muaj hluav taws xob cables, kev sib txuas lus cables, mining cables thiab lwm yam. Hla-txuas Polyethylene (XLPE) yog cov khoom siv cable nrog cov khoom siv hluav taws xob siab thiab cov khoom siv kho tshuab. Nws yog tsim los ntawm kev sib txuas ntawm cov khoom siv polyethylene ntawm qhov kub thiab txias. Cov tshuaj tiv thaiv crosslinking tuaj yeem ua rau cov khoom siv polyethylene tsim cov qauv peb-dimensional network, uas ua rau nws muaj zog thiab kub tsis kam. XLPE cable sheathing yog dav siv nyob rau hauv lub tshav pob ntawm high voltage cables, xws li kis tau tus mob kab, substations, thiab lwm yam. Nws muaj zoo heev hluav taws xob zog, mechanical zog thiab tshuaj stability, tab sis kuj muaj zoo heev kub tsis kam thiab huab cua tsis kam.
Polyurethane (PUR)yog hais txog ib pawg ntawm cov yas tsim nyob rau hauv lub lig 1930s. Nws yog tsim los ntawm cov txheej txheem tshuaj hu ua ntxiv polymerization. Cov khoom siv raw feem ntau yog roj av, tab sis cov khoom siv cog xws li qos yaj ywm, pob kws lossis qab zib beets tuaj yeem siv rau hauv nws cov khoom. PUR yog cov khoom siv cable sheathing feem ntau. Nws yog cov khoom siv elastomer nrog zoo heev hnav tsis kam, kev laus ua haujlwm, roj tsis kam thiab acid thiab alkali tsis kam, thaum muaj zog txhua yam thiab elastic rov ua haujlwm. PUR cable sheath tuaj yeem txhim kho los ntawm kev ntxiv cov khoom sib txawv, xws li nplaim hluav taws kub, cov neeg ua haujlwm kub kub, thiab lwm yam.
Txoj kev tsim khoom ntawm PUR cable sheath yog ntxiv PUR cov khoom rau ib qho extruder thiab extrude lawv nyob rau hauv qhov kub thiab txias los tsim ib tug tubular cable sheath. Polyurethane muaj cov cuab yeej zoo tshwj xeeb.
Cov khoom siv tau zoo heev hnav tsis kam, txiav tsis kam thiab tsim kua muag, thiab tseem hloov tau yooj yim txawm tias qhov kub thiab txias. Qhov no ua rau PUR tshwj xeeb tshaj yog tsim rau cov ntawv thov uas xav tau kev txav mus los thiab kev khoov, xws li cov hlua txuas. Hauv kev siv neeg hlau, cables nrog PUR sheathing tuaj yeem tiv taus ntau lab lub voj voog khoov lossis muaj zog torsional tsis muaj teeb meem. PUR kuj tseem muaj zog tiv thaiv roj, kuab tshuaj thiab hluav taws xob ultraviolet. Tsis tas li ntawd, nyob ntawm qhov muaj pes tsawg leeg ntawm cov khoom siv, nws yog halogen-dawb thiab nplaim hluav taws, uas yog cov txheej txheem tseem ceeb rau cov cables uas tau lees paub UL thiab siv hauv Tebchaws Meskas. PUR cables feem ntau siv rau hauv tshuab thiab Hoobkas tsim, kev lag luam automation, thiab kev lag luam tsheb.
Txawm hais tias PUR cable sheath muaj lub cev zoo, kev siv tshuab thiab tshuaj lom neeg, nws tus nqi kuj yog qhov siab thiab nws tsis haum rau cov nqi qis, ntau lub sijhawm.
Polyurethane thermoplastic elastomer (TPU)yog cov khoom siv cable sheathing feem ntau siv. Sib txawv ntawm polyurethane elastomer (PUR), TPU yog cov khoom siv thermoplastic nrog cov txheej txheem zoo thiab yas.
TPU cable sheath muaj zoo hnav tsis kam, roj tsis kam, acid thiab alkali tsis kam thiab huab cua tsis kam, thiab muaj cov neeg kho tshuab zoo zog thiab elastic rov ua haujlwm, uas tuaj yeem hloov mus rau qhov nyuaj txhua yam txav thiab kev co ib puag ncig.
Lub TPU cable sheath yog tsim los ntawm kev ntxiv TPU hais rau ib qho extruder thiab extruding lawv nyob rau hauv kub thiab siab los tsim ib tug tubular cable sheath.
TPU cable sheathing yog dav siv nyob rau hauv kev lag luam automation, tshuab cuab yeej cuab yeej, tswj cov lus tsa suab, neeg hlau thiab lwm yam teb, raws li zoo raws li tsheb, nkoj thiab lwm yam teb. Nws muaj kev hnav zoo thiab elastic rov ua haujlwm, tuaj yeem tiv thaiv kab mob zoo, tab sis kuj muaj qhov kub thiab txias tsis kam.
Piv nrog rau PUR, TPU cable sheathing muaj qhov zoo ntawm kev ua haujlwm zoo thiab cov yas, uas tuaj yeem hloov mus rau ntau qhov cable loj thiab cov qauv xav tau. Txawm li cas los xij, tus nqi ntawm TPU cable sheathing yog qhov siab, thiab nws tsis haum rau cov nqi qis, ntau ntau zaus.
Silicone roj hmab (PU)yog cov khoom siv cable sheathing feem ntau siv. Nws yog cov khoom siv organic polymer, uas yog hais txog cov saw tseem ceeb ntawm silicon thiab oxygen atoms ua ke, thiab silicon atom feem ntau txuas nrog ob pawg organic roj hmab. Ordinary silicone roj hmab yog tsim los ntawm silicone chains uas muaj methyl pawg thiab ib tug me me ntawm vinyl. Kev taw qhia ntawm phenyl pab pawg tuaj yeem txhim kho qhov kub thiab txias tsis kam ntawm silicone roj hmab, thiab kev qhia txog trifluoropropyl thiab cyanide pawg tuaj yeem txhim kho qhov kub thiab txias tsis kam ntawm silicone roj hmab. PU muaj qhov kub thiab txias tsis kam, txias tsis kam thiab oxidation tsis kam, thiab kuj muaj qhov muag muag zoo thiab elastic rov ua haujlwm. Silicone roj hmab cable sheath tuaj yeem txhim kho nws qhov kev ua tau zoo los ntawm kev ntxiv cov khoom sib txawv, xws li cov neeg ua haujlwm hnav-tiv taus, cov roj resistant, thiab lwm yam.
Txoj kev tsim ntawm silicone roj hmab cable sheath yog ntxiv cov silicone roj hmab sib tov rau lub extruder thiab extrude nws nyob rau hauv kub thiab siab los tsim ib tug tubular cable sheath. Silicone roj hmab cable sheath yog dav siv nyob rau hauv qhov kub thiab txias, huab cua tsis kam, xws li aerospace, nuclear fais fab nroj tsuag, petrochemical, tub rog thiab lwm yam teb.
Nws muaj qhov kub thiab txias tsis kam thiab oxidation tsis kam, tuaj yeem ua haujlwm ruaj khov hauv qhov kub thiab txias, kev kub siab, muaj zog corrosion ib puag ncig, tab sis kuj muaj lub zog zoo txhua yam thiab elastic rov ua haujlwm, tuaj yeem hloov mus rau qhov nyuaj txhua yam txav thiab kev co ib puag ncig.
Piv nrog rau lwm cov ntaub ntawv cable sheathing, silicone roj hmab cable sheathing muaj qhov kub thiab txias tsis kam thiab oxidation tsis kam, tab sis kuj muaj softness zoo thiab elastic rov ua haujlwm, haum rau ntau qhov chaw ua haujlwm. Txawm li cas los xij, tus nqi ntawm silicone roj hmab cable sheath yog qhov siab, thiab nws tsis haum rau cov nqi qis, ntau ntau zaus.
Polytetrafluoroethylene (PTFE)yog ib qho khoom siv cable sheathing, tseem hu ua polytetrafluoroethylene. Nws yog cov khoom siv polymer nrog kev ua haujlwm zoo corrosion, kub tsis kam thiab tshuaj lom neeg ua haujlwm, thiab tuaj yeem ua haujlwm ruaj khov hauv qhov kub thiab txias, kub siab thiab muaj zog corrosion puag ncig. Tsis tas li ntawd, fluorine plastics kuj muaj cov nplaim hluav taws zoo thiab hnav tsis kam.
Txoj kev tsim cov fluorine yas cable sheath yog ntxiv fluorine yas hais rau lub extruder thiab extrude lawv nyob rau hauv kub thiab siab los tsim ib tug tubular cable sheath.
Fluorine yas cable sheath yog dav siv nyob rau hauv aerospace, nuclear fais fab nroj tsuag, petrochemical thiab lwm yam high-end teb, raws li zoo raws li semiconductors, kho qhov muag kev sib txuas lus thiab lwm yam teb. Nws muaj kev tiv thaiv corrosion zoo heev thiab kub tsis kam, tuaj yeem ua haujlwm ruaj khov hauv qhov kub thiab txias, kev kub siab, muaj zog corrosion ib puag ncig rau lub sijhawm ntev, tab sis kuj muaj lub zog zoo txhua yam thiab elastic rov ua haujlwm, tuaj yeem hloov kho kom yooj yim txhua yam txav thiab kev co ib puag ncig.
Piv nrog rau lwm cov ntaub ntawv cable sheath, fluorine yas cable sheath muaj ntau dua corrosion kuj thiab kub tsis kam, haum rau ntau huab ua hauj lwm ib puag ncig. Txawm li cas los xij, tus nqi ntawm fluorine yas cable sheath yog qhov siab, thiab nws tsis haum rau cov nqi qis, ntau ntau zaus.
Post lub sij hawm: Oct-14-2024