Kev ua haujlwm ntawm cov ntaub ntawv insulating ncaj qha cuam tshuam rau qhov zoo, kev ua haujlwm zoo thiab daim ntawv thov ntawm cov xov hlau thiab cables. Kev ua haujlwm ntawm cov ntaub ntawv insulating ncaj qha cuam tshuam rau qhov zoo, kev ua haujlwm zoo thiab daim ntawv thov ntawm cov xov hlau thiab cables.
1.PVC polyvinyl chloride xov hlau thiab cables
Polyvinyl chloride (hauv qab no hu uaPVC) Cov ntaub ntawv insulating yog cov khoom sib xyaw uas cov stabilizers, plasticizers, nplaim retardants, lubricants thiab lwm yam additives ntxiv rau PVC hmoov. Raws li cov ntawv thov sib txawv thiab cov yam ntxwv ntawm cov xov hlau thiab cables, cov qauv raug kho raws li qhov xav tau. Tom qab ntau xyoo ntawm kev tsim thiab siv, kev tsim thiab kev siv tshuab ntawm PVC tam sim no tau dhau los ua neeg paub tab. PVC insulating cov ntaub ntawv muaj ntau daim ntawv thov nyob rau hauv lub tshav pob ntawm cov xov hlau thiab cables thiab muaj cov yam ntxwv ntawm nws tus kheej:
A. Cov cuab yeej tsim khoom yog paub tab, yooj yim rau kev tsim thiab txheej txheem. Piv nrog rau lwm yam khoom siv hluav taws xob cable, nws tsis tsuas yog muaj tus nqi qis xwb, tab sis kuj tuaj yeem tswj cov xim sib txawv, gloss, luam ntawv, kev ua haujlwm zoo, softness thiab hardness ntawm hlau nto, adhesion ntawm tus neeg xyuas pib, nrog rau cov khoom siv thiab lub cev thiab cov khoom siv hluav taws xob ntawm cov hlau nws tus kheej.
B. Nws muaj cov nplaim hluav taws kub zoo heev, yog li PVC insulated xov hlau tuaj yeem ua tau raws li cov nplaim hluav taws kub retardant qib uas tau teev tseg los ntawm ntau cov qauv.
C. Nyob rau hauv cov nqe lus ntawm qhov kub thiab txias, los ntawm kev optimization thiab txhim kho cov qauv ntawm cov khoom, tam sim no feem ntau siv hom PVC rwb thaiv tsev feem ntau suav nrog peb pawg hauv qab no:
Hais txog qhov ntsuas hluav taws xob, feem ntau yog siv nyob rau hauv qhov ntsuas hluav taws xob nyob ntawm 1000V AC thiab hauv qab no, thiab tuaj yeem siv dav hauv kev lag luam xws li cov khoom siv hauv tsev, cov cuab yeej siv thiab ntsuas, teeb pom kev zoo, thiab kev sib txuas lus hauv network.
PVC kuj tseem muaj qee qhov kev tsis txaus ntseeg uas txwv nws daim ntawv thov:
A. Vim nws cov ntsiab lus chlorine siab, nws yuav tawm ntau cov pa luam yeeb tuab thaum hlawv, uas tuaj yeem ua rau tuag taus, cuam tshuam rau kev pom, thiab tsim qee cov carcinogens thiab HCl roj, ua rau muaj kev puas tsuaj loj rau ib puag ncig. Nrog rau txoj kev loj hlob ntawm cov pa luam yeeb tsawg xoom halogen rwb thaiv tsev cov ntaub ntawv tsim technology, maj mam hloov PVC rwb thaiv tsev tau dhau los ua ib qho kev inevitable nyob rau hauv txoj kev loj hlob ntawm cables.
B. Ordinary PVC rwb thaiv tsev tsis zoo rau cov kua qaub thiab alkalis, roj kub, thiab cov kuab tshuaj organic. Raws li cov txheej txheem tshuaj lom neeg zoo li dissolves zoo li, PVC xov hlau yog qhov ua rau muaj kev puas tsuaj thiab tawg hauv ib puag ncig tshwj xeeb hais. Txawm li cas los xij, nrog nws cov kev ua haujlwm zoo heev thiab tus nqi qis. PVC cables tseem siv dav hauv cov khoom siv hauv tsev, teeb pom kev zoo, cov khoom siv kho tshuab, cov twj paj nruag thiab cov ntsuas, kev sib txuas lus hauv tsev, kev sib txuas hauv tsev thiab lwm yam.
2. Hla-txuas polyethylene xov hlau thiab cables
Hla-txuas PE (tom qab no hu uaXLPE) yog ib hom polyethylene uas tuaj yeem hloov pauv los ntawm cov qauv linear molecular mus rau peb-dimensional peb-dimensional qauv nyob rau hauv tej yam kev mob nyob rau hauv qhov kev txiav txim ntawm high-zog rays los yog cross-linking agents. Nyob rau tib lub sijhawm, nws hloov los ntawm cov thermoplastic mus rau cov yas tsis soluble thermosetting.
Tam sim no, nyob rau hauv daim ntawv thov ntawm cov xaim thiab cable rwb thaiv tsev, muaj feem ntau peb txoj kev sib txuas:
A. Peroxide cross-linking: Nws yog thawj zaug siv polyethylene resin ua ke nrog cov khoom sib txuas uas tsim nyog thiab cov tshuaj tua kab mob antioxidant, thiab tom qab ntawd ntxiv lwm yam khoom raws li xav tau los tsim cov khoom sib txuas sib txuas ntawm polyethylene sib xyaw. Thaum lub sij hawm extrusion txheej txheem, cross-linking tshwm sim los ntawm kub chav hla-txuas kav.
B. Silane cross-linking (cov dej sov sib txuas) : Qhov no kuj yog ib txoj hauv kev ntawm kev sib txuas tshuaj lom neeg. Nws lub ntsiab mechanism yog hla-txuas organosiloxane thiab polyethylene nyob rau hauv tej yam kev mob, a
nd cov degree ntawm kev sib txuas sib txuas feem ntau tuaj yeem ncav cuag li 60%.
C. Irradiation cross-linking: Nws siv cov hluav taws xob muaj zog xws li R-rays, alpha rays, thiab electron rays los qhib cov pa roj carbon atoms hauv polyethylene macromolecules thiab ua rau kev sib txuas. Cov hluav taws xob hluav taws xob siab feem ntau siv hauv cov xov hlau thiab cov kab hluav taws xob yog cov hluav taws xob hluav taws xob tsim los ntawm cov hluav taws xob accelerators. Txij li qhov kev sib txuas sib txuas no tso siab rau lub zog ntawm lub cev, nws yog lub cev sib txuas.
Cov saum toj no peb txoj kev sib txawv crosslinking muaj cov yam ntxwv thiab kev siv:
Piv nrog cov thermoplastic polyethylene (PVC), XLPE rwb thaiv tsev muaj qhov zoo hauv qab no:
A. Nws tau txhim kho cov cua sov deformation tsis kam, txhim kho cov khoom siv hluav taws xob ntawm qhov kub thiab txias, thiab txhim kho kev tiv thaiv ib puag ncig kev ntxhov siab tawg thiab kub laus.
B. Nws tau txhim kho cov tshuaj lom neeg ruaj khov thiab hnyav ua haujlwm, txo cov dej txias, thiab tswj cov khoom siv hluav taws xob qub. Lub sij hawm ua haujlwm kub tuaj yeem ncav cuag 125 ℃ thiab 150 ℃. Lub cross-linked polyethylene insulated hlau thiab cable kuj tseem txhim kho qhov kev tiv thaiv luv luv, thiab nws lub sij hawm luv luv tuaj yeem ncav cuag ntawm 250 ℃, rau cov xov hlau thiab cables ntawm tib lub thickness, lub peev xwm nqa ntawm cross-linked polyethylene yog ntau dua.
C. Nws muaj cov cuab yeej zoo heev, tsis muaj dej tsis zoo thiab hluav taws xob tiv taus, yog li nws tau siv dav hauv ntau yam haujlwm. Xws li: sab hauv kev sib txuas xov hlau rau cov khoom siv hluav taws xob, lub cev muaj zog, cov teeb pom kev zoo, cov teeb liab hluav taws xob qis rau tsheb, cov xov hlau locomotive, xov hlau thiab cables rau subways, ib puag ncig tiv thaiv cables rau mines, Marine cables, cables rau nuclear fais fab tso, high-voltage xov hlau rau TV, high-voltage fais fab hlau xaim, thiab RA cables thiab lwm yam.
XLPE insulated xov hlau thiab cables muaj qhov zoo, tab sis lawv kuj muaj qee qhov kev tsis zoo uas txwv lawv daim ntawv thov:
A. Kev ua haujlwm tsis zoo thaum tshav kub-resistant adhesion. Thaum ua thiab siv cov xov hlau tshaj qhov ntsuas kub, nws yooj yim rau cov xov hlau los lo rau ib leeg. Hauv cov xwm txheej hnyav, nws tuaj yeem ua rau muaj kev puas tsuaj rau rwb thaiv tsev thiab luv luv Circuit Court.
B. Tsis zoo thermal conduction kuj. Ntawm qhov kub siab tshaj 200 ℃, cov rwb thaiv tsev ntawm cov xov hlau ua mos heev. Thaum raug sab nraud quab yuam squeezing los yog kev sib tsoo, nws yog nquag ua rau cov xov hlau txiav los ntawm thiab luv Circuit Court.
C. Nws yog qhov nyuaj los tswj cov xim sib txawv ntawm cov khoom siv. Cov teeb meem xws li khawb, ntxuav hniav dawb thiab cov ntawv luam tawm tev tawm tuaj yeem tshwm sim thaum ua haujlwm
D. Cov rwb thaiv tsev XLPE nrog qhov ntsuas kub ntawm 150 ℃ yog tsis muaj halogen tag nrho thiab tuaj yeem xeem dhau VW-1 combustion xeem raws li UL1581 cov qauv, thaum tuav cov khoom zoo heev thiab hluav taws xob. Txawm li cas los xij, tseem muaj qee qhov kev tsis sib haum xeeb hauv kev tsim tshuab thiab tus nqi siab.
3. Silicone roj hmab xaim thiab cables
Cov polymer molecules ntawm silicone roj hmab yog cov saw hlau tsim los ntawm SI-O (silicon-oxygen) bonds. SI-O daim ntawv cog lus yog 443.5KJ / MOL, uas yog ntau dua li CC daim ntawv cog lus zog (355KJ / MOL). Feem ntau silicone roj hmab xov hlau thiab cables yog tsim los ntawm txias extrusion thiab high-temperature vulcanization txheej txheem. Ntawm ntau yam hluavtaws roj hmab xov hlau thiab cables, vim nws cov qauv molecular tshwj xeeb, silicone roj hmab muaj kev ua tau zoo dua piv rau lwm cov roj hmab zoo tib yam.
A. Nws yog mos heev, muaj elasticity zoo, tsis muaj ntxhiab thiab tsis muaj tshuaj lom, thiab tsis ntshai ntawm qhov kub thiab txias thiab tuaj yeem tiv taus txias heev. Kev khiav hauj lwm kub yog los ntawm -90 mus rau 300 ℃. Silicone roj hmab muaj qhov kub zoo dua li cov roj hmab zoo tib yam. Nws tuaj yeem siv tsis tu ncua ntawm 200 ℃ thiab rau lub sijhawm ntawm 350 ℃.
B. Huab cua zoo heev. Txawm tias tom qab lub sij hawm ntev raug rau ultraviolet rays thiab lwm yam climatic tej yam kev mob, nws lub cev muaj zog tsuas tau hloov me ntsis.
C. Silicone roj hmab muaj qhov ua haujlwm siab heev thiab nws qhov kev tiv thaiv tseem nyob ruaj khov tshaj qhov kub thiab ntau zaus.
Meanwhile, silicone roj hmab muaj kev tiv thaiv zoo heev rau high-voltage corona tawm thiab arc tawm. Silicone roj hmab insulated xov hlau thiab cables muaj cov saum toj no qhov zoo thiab yog dav siv nyob rau hauv high-voltage ntaus ntawv xov hlau rau TVs, high-temperature resistant xov hlau rau microwave ncu, xov hlau rau induction cookers, xov hlau rau kas fes POTS, leads rau teeb, UV khoom, halogen teeb, sab hauv kev twb kev txuas xov hlau rau ncu thiab kiv cua, tshwj xeeb tshaj yog nyob rau hauv lub teb ntawm me me apparatus.
Txawm li cas los xij, qee qhov ntawm nws tus kheej tsis txaus kuj txwv nws txoj kev siv dav dua. Piv txwv li:
A. Cov kua muag tsis zoo. Thaum lub sij hawm ua los yog siv, nws yog feem ntau yuav puas vim yog sab nraud quab yuam squeezing, khawb thiab sib tsoo, uas yuav ua rau ib tug luv luv Circuit Court. Qhov kev tiv thaiv tam sim no yog ntxiv ib txheej ntawm iav fiber ntau los yog high-temperature polyester fiber braided sab nraum silicone rwb thaiv tsev. Txawm li cas los xij, thaum lub sijhawm ua haujlwm, nws tseem yuav tsum tau zam kev raug mob los ntawm kev quab yuam sab nraud kom ntau li ntau tau.
B. Tus neeg sawv cev vulcanizing tam sim no tsuas yog siv hauv vulcanization molding yog ob, ob, plaub. Tus neeg sawv cev vulcanizing no muaj chlorine. Ua tiav halogen-dawb vulcanizing cov neeg ua haujlwm (xws li platinum vulcanizing) muaj cov kev cai nruj rau qhov kub thiab txias. Yog li ntawd, thaum ua cov hlua hlau, cov ntsiab lus hauv qab no yuav tsum tau sau tseg: lub siab ntawm lub log yuav tsum tsis txhob siab dhau. Nws yog qhov zoo tshaj plaws los siv cov khoom siv roj hmab los tiv thaiv kev tawg thaum lub sij hawm tsim khoom, uas tuaj yeem ua rau lub zog tsis zoo.
4. Cross-linked ethylene propylene diene monomer (EPDM) roj hmab (XLEPDM) hlau
Hla-txuas txuas ethylene propylene diene monomer (EPDM) roj hmab yog terpolymer ntawm ethylene, propylene thiab tsis yog-conjugated diene, uas yog cross-linked los ntawm cov tshuaj los yog irradiation txoj kev. Hla-txuas EPDM roj hmab insulated hlau ua ke qhov zoo ntawm ob qho tib si polyolefin insulated hlau thiab zoo tib yam roj hmab insulated hlau:
A. Mos, yoog raws, elastic, tsis lo ntawm qhov kub thiab txias, kev laus ua haujlwm ntev, thiab tiv taus huab cua hnyav (-60 txog 125 ℃).
B. Ozone kuj, UV tsis kam, hluav taws xob rwb thaiv tsev, thiab tshuaj tiv thaiv corrosion.
C. Cov roj thiab cov kuab tshuaj tiv thaiv yog piv rau cov hom phiaj ntawm chloroprene roj hmab rwb thaiv tsev. Nws yog ua tiav los ntawm cov khoom siv kub extrusion zoo tib yam thiab irradiation cross-linking yog saws, uas yooj yim rau txheej txheem thiab tsis tshua muaj nqi. Hla-txuas txuas ethylene propylene diene monomer (EPDM) roj hmab insulated xov hlau muaj cov lus hais saum toj no ntau qhov zoo thiab tau siv dav hauv kev lag luam xws li tub yees compressor coj, tsis siv neeg lub cev muaj zog, transformer leads, mobile cables hauv mines, drilling, tsheb, khoom siv kho mob, ships, thiab cov kab hluav taws xob sab hauv.
Lub ntsiab tsis zoo ntawm XLEPDM xov hlau yog:
A. Zoo li XLPE thiab PVC xov hlau, nws muaj qhov tsis zoo tsim kua muag.
B. Tsis zoo adhesion thiab nws tus kheej-adhesiveness cuam tshuam rau tom ntej processability.
5. Fluoroplastic xov hlau thiab cables
Piv nrog cov polyethylene thiab polyvinyl chloride cables, fluoroplastic cables muaj cov yam ntxwv tseem ceeb hauv qab no:
A. High-temperature resistant fluoroplastics muaj qhov txawv tshaj plaw thermal stability, ua kom cov fluoroplastic cables hloov mus rau qhov kub ntawm qhov kub ntawm 150 txog 250 degrees Celsius. Nyob rau hauv cov xwm txheej ntawm cov neeg xyuas pib nrog tib qhov chaw hla ntu, fluoroplastic cables tuaj yeem xa tawm qhov loj dua tam sim no, yog li nthuav dav daim ntawv thov ntau yam ntawm cov kab hluav taws xob no. Vim yog cov khoom tshwj xeeb no, fluoroplastic cables feem ntau yog siv rau kev xaim sab hauv thiab cov hlau lead hauv cov dav hlau, nkoj, cov cua kub kub, thiab cov khoom siv hluav taws xob.
B. Cov nplaim hluav taws zoo: Fluoroplastics muaj cov pa oxygen siab, thiab thaum kub hnyiab, cov nplaim hluav taws sib kis me me, ua kom muaj pa taws tsawg. Cov hlau ua los ntawm nws yog tsim rau cov cuab yeej thiab qhov chaw uas yuav tsum tau nruj me ntsis rau nplaim retardancy. Piv txwv li: kev sib txuas hauv computer, subways, tsheb, cov tsev siab siab thiab lwm qhov chaw pej xeem, thiab lwm yam. Thaum hluav taws kub hnyiab, tib neeg tuaj yeem muaj sijhawm los khiav tawm yam tsis muaj pa taws los ntawm cov pa taws, yog li tau txais lub sijhawm cawm siav.
C. Kev ua tau zoo ntawm hluav taws xob: Piv nrog polyethylene, fluoroplastics muaj qhov qis dielectric tas li. Yog li ntawd, piv nrog coaxial cables ntawm cov qauv zoo sib xws, fluoroplastic cables muaj tsawg attenuation thiab yog haum rau high-frequency teeb liab kis tau tus mob. Niaj hnub no, kev siv ntau zaus ntawm kev siv cable tau dhau los ua qhov sib txawv. Lub caij no, vim qhov kub-kub tsis kam ntawm fluoroplastics, lawv feem ntau yog siv los ua cov xaim sab hauv rau kev sib txuas lus thiab cov khoom siv sib txuas lus, jumpers ntawm wireless kis feeders thiab transmitters, thiab video thiab audio cables. Tsis tas li ntawd, fluoroplastic cables muaj lub zog zoo dielectric thiab rwb thaiv tsev tiv thaiv, ua rau lawv tsim nyog siv los tswj cov kab hluav taws xob rau cov cuab yeej tseem ceeb thiab cov ntsuas.
D. Zoo meej txhua yam thiab tshuaj lom neeg: Fluoroplastics muaj cov tshuaj lom neeg muaj zog, ruaj khov siab, yuav luag tsis muaj kev cuam tshuam los ntawm qhov kub thiab txias, thiab muaj huab cua zoo tiv thaiv kev laus thiab lub zog txhua yam. Thiab nws tsis cuam tshuam los ntawm ntau yam acids, alkalis thiab organic solvents. Yog li ntawd, nws yog qhov tsim nyog rau ib puag ncig uas muaj kev hloov pauv huab cua thiab corrosive tej yam kev mob, xws li petrochemicals, roj refining, thiab roj zoo ntsuas ntsuas.
E. Ua kom muaj kev sib txuas ntawm vuam hauv cov cuab yeej hluav taws xob, ntau qhov kev sib txuas yog tsim los ntawm vuam. Vim qhov qis melting point ntawm cov yas dav dav, lawv zoo li yaj tau yooj yim ntawm qhov kub thiab txias, yuav tsum muaj kev txawj vuam zoo. Ntxiv mus, qee cov ntsiab lus vuam xav tau qee lub sijhawm vuam, uas yog vim li cas vim li cas fluoroplastic cables nrov. Xws li kev sib txuas hauv cov khoom siv sib txuas lus thiab cov cuab yeej hluav taws xob.
Tau kawg, fluoroplastics tseem muaj qee qhov tsis zoo uas txwv lawv txoj kev siv:
A. Tus nqi ntawm cov khoom siv raw yog siab. Tam sim no, kev tsim khoom hauv tsev tseem tsuas yog tso siab rau kev xa khoom tuaj (Daikin ntawm Nyiv thiab DuPont ntawm Tebchaws Meskas). Txawm hais tias domestic fluoroplastics tau tsim sai heev nyob rau hauv xyoo tas los no, cov ntau lawm yog tseem ib leeg. Piv nrog rau cov ntaub ntawv tuaj txawv teb chaws, tseem muaj qhov sib txawv ntawm thermal stability thiab lwm yam khoom ntawm cov ntaub ntawv.
B. Piv nrog rau lwm cov ntaub ntawv insulating, cov txheej txheem ntau lawm yog qhov nyuaj dua, qhov kev ua tau zoo ntawm cov khoom siv yog tsawg, cov ntawv luam tawm yog nquag poob, thiab qhov poob yog loj, uas ua rau cov nqi ntau lawm kuj siab.
Nyob rau hauv xaus, daim ntawv thov ntawm tag nrho cov saum toj no-hais hom ntawm insulating cov ntaub ntawv, tshwj xeeb tshaj yog kub-kub tshwj xeeb insulating cov ntaub ntawv nrog ib tug kub tsis kam ntawm tshaj 105 ℃, tseem nyob rau hauv ib tug hloov lub sij hawm nyob rau hauv Tuam Tshoj. Txawm hais tias nws yog kev tsim cov hlau los yog kev ua cov hlua hlau, tsis yog tsuas yog cov txheej txheem paub tab, tab sis kuj yog cov txheej txheem ntawm kev nkag siab txog qhov zoo thiab qhov tsis zoo ntawm hom hlau no.
Post lub sij hawm: May-27-2025