Qhov sib txawv tseem ceeb yog nyob rau hauv cov ntaub ntawv sheath sab nraud ntawm lub cable. Cov txheej rwb thaiv tsev thiab sheath ntawm halogen-dawb tsis muaj pa taws hluav taws xob tsis tshua muaj hluav taws xob muaj hluav taws xob zoo dua, thiab cov pa taws hluav taws xob ntawm cov cables kuj tseem me me, nrog qis toxicity. Tus nqi ntawm halogen-dawb tsis tshua muaj pa taws-retardant cable yog siab dua.
1. Lub nplaim hluav taws xob yog ib qho cable uas, raws li kev ntsuas kev ntsuas, cov qauv raug hlawv, thiab tom qab tshem tawm cov nplaim hluav taws xob, cov nplaim hluav taws sib kis tsuas yog nyob rau hauv ib qho kev txwv, thiab cov nplaim hluav taws kub lossis hluav taws tuaj yeem tua nws tus kheej hauv lub sijhawm txwv.
Nws cov yam ntxwv tseem ceeb yog tias nws yuav raug hlawv tawm thiab tsis tuaj yeem ua haujlwm thaum muaj hluav taws kub, tab sis nws tuaj yeem tiv thaiv kev sib kis ntawm hluav taws. Cias muab, yog tias ib lub cable ntes hluav taws, nws tuaj yeem txwv qhov kev sib tsoo rau hauv ib cheeb tsam, tiv thaiv kev sib kis, tiv thaiv lwm yam khoom siv, thiab tsis txhob ua rau poob ntau dua.
2. Cov txheej rwb thaiv tsev, sheath, txheej tiv thaiv sab nrauv, thiab cov khoom siv pabcuam (wrapping thiab filling) ntawm halogen-dawb tsis muaj pa taws tsis muaj pa taws-retardant cables yog tag nrho lossis ib nrab ua los ntawm halogen-free cross-linked polyethylene (XLPE) cov ntaub ntawv nplaim hluav taws. , uas tsis tsuas yog muaj cov nplaim hluav taws zoo dua qub, tab sis kuj tsis tawm halogen acid roj thaum lub sij hawm sib txuas cable.
Cov pa luam yeeb emission ntawm cables kuj yog me me, thiab cov roj corrosive tsim los ntawm cable combustion kuj yog ib qho kev cuam tshuam ntawm cable nplaim taws retardancy thiab txo tus nqi ntawm halogen acid gas generated. Ib qho hluav taws xob tsawg halogen thiab cov pa taws hluav taws xob tsawg tau tsim. Nws cov ntsiab lus halogen yog kwv yees li ib feem peb ntawm cov halogen uas muaj cov nplaim hluav taws kub. Tus nqi ntawm cov pa luam yeeb tawm kuj nyob ze rau qhov lees paub "tsawg pa luam yeeb" qib.
