Nrog rau txoj kev loj hlob ntawm lub sij hawm, tib neeg muaj ntau thiab ntau cov kev cai nruj heev rau kev tiv thaiv ib puag ncig, thiab them nyiaj ntau dua rau cov teeb meem ntawm cov chaw pej xeem. Yog li ntawd, nyob rau hauv niaj hnub high-sawv vaj tse, subways, tsev kho mob, tsev kawm ntawv qib siab, khw malls thiab lwm yam densely populated cheeb tsam, xws li thaum muaj xwm ceev tawm teeb pom kev zoo, lub tswb thiab cov khoom tiv thaiv hluav taws, nrog rau cov nkoj thiab locomotive manufacturing, tib neeg xav tau ib tug ntau txhim khu kev qha thiab ntau txhim khu kev qha cable rau lub zog kis tau tus mob thiab ntsuas, uas yog txawv los ntawm zoo tib yam PVC rwb thaiv tsev -- tsawg pa taws halogen-dawb nplaim retardant thiab hluav taws-resistant cable. Qhov txawv ntawm LSZH nplaim retardant cable thiab hluav taws-resistant cable yog qhia los ntawm.
Tsawg pa taws halogen-dawb nplaim retardant thiab hluav taws-resistant cable
Cov yam ntxwv ntawm cov pa taws tsawg halogen-dawb nplaim hluav taws kub retardant cables thiab hluav taws kub-resistant cables yog ua kom tau raws li cov neeg xav tau ntawm hluav taws xob xa hluav taws xob thiab kev ntsuas. Qee cov tuam txhab lag luam thoob ntiaj teb, xws li Alcatel (tam sim no hloov npe hu ua Nexant), tau siv cov ntaub ntawv tshiab tsim los tsim cov pa taws uas tsis muaj pa taws halogen tsis muaj hluav taws kub thiab hluav taws kub ntau tshaj kaum xyoo dhau los.
Piv nrog cov PVC insulated thiab sheathed cables zoo tib yam, halogen-free cables yog cov khoom uas ua tau raws li niaj hnub no. Nyob rau hauv cov ntaub ntawv ntawm hluav taws kub, cov pa luam yeeb tso tawm thaum lub cable raug hlawv yog tsis muaj tshuaj lom thiab corrosive, yog li kev puas tsuaj rau tib neeg lub cev thiab cov khoom yuav txo tau heev. Nyob rau tib lub sijhawm, thaum cov kab hluav taws xob tsis muaj halogen nyob rau hauv lub tswb hluav taws, tus nqi thiab cov pa taws tso tawm tsawg heev, yog li cov neeg thiab cov neeg tua hluav taws tuaj yeem pom tseeb qhov chaw thiab qhov hluav taws xob ntawm cov nplaim taws, thiab cov neeg tua hluav taws tuaj yeem tuaj txog ntawm qhov chaw tua hluav taws. kom tua hluav taws.
Tsis tas li ntawd, nyob rau hauv cov ntaub ntawv ntawm hluav taws kub, cov nplaim retardant Cheebtsam ntawm nplaim retardant cable muaj peev xwm ua si lub luag hauj lwm ntawm nplaim retardancy, thiaj li hais tias lub cable yuav tsis ua ib tug channel rau nplaim taws. Nyob rau tib lub sijhawm, halogen-free flame-retardant cable kuj tuaj yeem siv cov khoom siv raw thiab cov qauv tsim raws li qhov yuav tsum tau ua kom nws muaj hluav taws kub. Nyob rau hauv cov ntaub ntawv ntawm hluav taws kub tswb, xws li hluav taws-resistant cable tseem yuav ua hauj lwm rau lub sij hawm ntev los muab hluav taws xob lub zog rau cawm cov neeg ua hauj lwm thiab cov khoom.
Cov yam ntxwv tseem ceeb ntawm cov pa luam yeeb halogen-dawb nplaim hluav taws xob cable thiab hluav taws kub-resistant cable
1. Cov pa luam yeeb ntom ntom ntom ntom ntom ntom ntom ntom ntom ntom ntom ntom ntom ntom ntom ntom ntom ntom ntom ntom ntom ntom ntom ntom ntom ntom ntom ntom ntom ntom ntom ntom ntom ntom ntom ntom ntom ntom ntom ntom ntom ntom ntom ntom ntom ntom ntom ntom ntom ntom ntom ntom ntom ntom ntom ntom ntom ntom ntom ntom ntom ntom ntom ntom ntom ntom ntom ntom ntom ntom ntom ntom ntom ntom ntom ntom ntom ntom ntom ntom ntom ntom ntom ntom ntom ntom ntom ntom ntom ntom ntom ntom ntom ntom ntom ntom ntom ntom ntom ntom ntom cov ntaub ntawv polymer cov ntaub ntawv yuav tsim qee cov pa luam yeeb ntau dua lossis tsawg dua thaum hlawv. Cov pa luam yeeb yog ib qho sib xyaw ntawm cov dej vapor thiab roj nrog rau cov khoom siv los yog cov kua dej uas tau tsim los ntawm kev tsis sib xyaw. Cov pa luam yeeb ntom nti thaum muaj kev sib txuas nrog DS (tshwj xeeb kho qhov muag tsis pom zoo rau thaum muaj kev ntsuas nrog cov qauv kev ntsuas ntawm cov qauv. Dm sawv cev rau tag nrho cov pa luam yeeb. Qhov ntau dua Dm, qhov ntau dua cov pa luam yeeb thaum lub sij hawm combustion, thiab vice versa. Thaum cov kab hluav taws kub hnyiab, cov khoom siv PVC dav dav yuav tso tawm qhov siab thiab lub teeb ci ntsa iab thaum hlawv. Yog vim li cas yog tias cov tshuaj chlorine muaj nyob rau hauv PVC cov pa luam yeeb yuav hnov mob nrog antimony nyob rau hauv additives thaum lub sij hawm combustion, uas ua rau tsis combustion thiab tsim ntawm antimony trichloride gas (qhov tsim ntawm cov tshuaj no yuav zoo heev dilute cov pa oxygen nyob rau hauv cov huab cua, yog li suffocating cov neeg nyob rau hauv lub combustion. hluav taws), thaum tso pa taws dub molecules (carbon molecules) uas cuam tshuam lub teeb kis tau tus mob. Txawm li cas los xij, cov teeb meem saum toj no tsis muaj nyob hauv halogen-free cables.
2. Thaum cov tshuaj lom thiab corrosive zoo tib yam PVC cables raug hlawv, chlorine thiab hydrogen nyob rau hauv lawv yuav ua ke kom tso hydrogen chloride gas. Thaum lub cable yuav tsum tsis txhob tsim ntau cov pa luam yeeb thiab tshuaj lom, los yog nws cov toxicity yuav tsis txhim kho thaum kub nce, PVC cable yuav raug txwv tsis pub siv. Thaum cov kab hluav taws xob tsis muaj halogen siv halogen-dawb polyolefin ua cov khoom siv hauv paus, uas yuav tsis tsim cov roj acid thaum hlawv, yog li nws cov toxicity thiab corrosivity qis dua li cov PVC cables.
3. Txawm hais tias cov cables ua los ntawm PVC thiab lwm yam ntaub ntawv uas muaj halogen muaj nplaim retardant zog, halogen-dawb nplaim retardant cables tau dhau los ua ib qho kev xaiv tsis muaj nyob rau hauv lub neej niaj hnub nrog kev xav tau ntau ntxiv vim lawv cov pa luam yeeb loj thiab cov pa phem thiab corrosive gases. . Nyob rau hauv halogen-dawb nplaim retardant, cov nplaim retardant fillers feem ntau muaj xws li txhuas los yog magnesium hydroxide uas muaj ntau ntau. Cov khoom no tuaj yeem tso cov dej siv lead ua thaum lub cable raug hlawv, nqus cua sov ntau, yog li inhibiting qhov kub ntawm polymer, ncua thermal decomposition, thiab txo qhov kub ceev. Tsis tas li ntawd, cov dej vapor generated los ntawm lub cev qhuav dej thiab decomposition yuav dilute cov combustible gas, thiaj li muaj ib tug nplaim retardant nyhuv. Yog lawm, kev sib ntxiv ntawm cov khoom siv hluav taws xob ntau dhau rau cov teeb meem organic yuav txo cov khoom siv hluav taws xob thiab hluav taws xob ntawm cov khoom. Yog li ntawd, yuav ua li cas ua kom cov ntaub ntawv tsis muaj halogen tsis tsuas yog muaj cov nplaim hluav taws zoo heev, tab sis kuj muaj cov khoom siv hluav taws xob zoo thiab hluav taws xob tau dhau los ua ib qho teeb meem nyuaj los daws.
4. Cov yam ntxwv ntawm hluav taws kub nyhiab Thaum cov kab hluav taws xob txuas ntxiv tuaj yeem ua lub luag haujlwm hauv lub tswb hluav taws, thiab thaum lub cable inevitably yuav tsum tau txhim tsa ntawm txoj kab hauv cheeb tsam uas muaj kev pheej hmoo siab, cable muaj hluav taws kub ua haujlwm. Raws li IEC331 tus qauv, hluav taws kub-resistant cables tuaj yeem ua haujlwm rau 90 feeb hauv qab 750 degree. Thaum PVC cable kub hnyiab, nws yuav tso tawm corrosive thiab ionized gases uas ua puas lub mica ntug sealing, tsim kom muaj ib puag ncig coj. Cov kab hluav taws xob tsis muaj hluav taws xob halogen uas tsim los ntawm ob peb lub tuam txhab cable hauv ntiaj teb uas siv cov khoom siv hluav taws xob tsis muaj hluav taws xob halogen thiab cov txheej txheem hluav taws kub siab heev tsis muaj teeb meem thiab tuaj yeem ua haujlwm tsis tu ncua rau 3 teev ntawm 1000 degree.
