Chlorinated Polyethylene (cpe) yog dab tsi thiab nws siv qhov twg?
Argonated polyethylene cpe low density polyethylene 2 silicone rubber blend cable insulation material is low density polyethylene (LDPE) thiab polydimethylsiloxane compatibilized los ntawm ethyl methacrylate (EMA) (PDMS) roj hmab sib xyaw yog cov khoom siv hluav taws xob tiv thaiv hluav taws xob zoo. Ntau yam khoom siv hluav taws xob, cov khoom siv kho tshuab thiab cov khoom siv thermal ntawm cov khoom sib xyaw tau kawm. Cov txiaj ntsig tau pom tias cov khoom sib xyaw tuaj yeem siv los ua cov khoom siv thermal rwb thaiv tsev, piv nrog cov khoom siv roj hmab silicone, nws muaj nqi zoo dua.
Tau ntev, tib neeg tau suav tias cov roj hmab silicone yog cov roj hmab tshwj xeeb rau cov cables hauv ntau qhov kub thiab txias. Txawm li cas los xij, tus nqi kim ntawm silicone roj hmab txwv nws daim ntawv thov ntau yam.
LDPE yog cov yas uas muaj ntau tshaj plaws hauv kev lag luam. Nws muaj tus nqi qis thiab cov khoom siv hluav taws xob zoo heev, yog li nws tau dav siv los ua ib qho insulating polymer nyob rau hauv nruab nrab thiab qis voltage nyob ntawm tej thiab cables. LDPE tsis yog tsuas yog tus nqi qis xwb tab sis kuj tseem tsis tshua muaj dielectric tsis tu ncua thiab poob qhov tseem ceeb, kev tiv thaiv siab, thiab cov khoom siv zoo heev hauv qab qhov kub ntawm 90C, yog li feem ntau cov roj hmab hluavtaws, xws li styrene-butadiene roj hmab (SBR), butyl roj hmab (IR. ), neoprene (CR) thiab lwm yam tau poob ib feem ntawm kev ua lag luam. Piv nrog rau cov khoom siv silicone roj hmab rwb thaiv tsev, kev sib xyaw ntawm polydimethylsiloxane (PDMS) thiab LDPE muaj qhov zoo ntawm cov nqi qis kom ua tau raws li ntau qib, Ntxiv rau cov kev cai tshwj xeeb ntawm cov cables rau kev xa hluav taws xob, kev tswj hwm thiab cov twj paj nruag, tib neeg tau tsim kho tas li. ntau yam tshiab polymer rwb thaiv tsev cov ntaub ntawv. Txawm li cas los xij, cov khoom siv hluav taws xob thiab hluav taws xob tsis zoo ntawm cov khoom siv hluav taws xob tsawg (<10kV) yog siab dua.
Cov khoom hluav taws xob tseem ceeb dua.
Piv txwv li; cable rwb thaiv tsev txheej rau lub cub tawg yuav tsum muaj kev ruaj ntseg zoo ntawm txhua yam khoom ntawm qhov kub thiab txias. Ib yam li ntawd; cov kev xav tau rau cov pa luam yeeb tsawg, roj-resistant, thiab nplaim hluav taws kub kuj txawv. Yog li lub cable yuav tsum Lub sijhawm thov txiav txim siab qhov yuav tsum tau ua rau kev ua haujlwm tshwj xeeb ntawm cable. Lub oxidative degradation ntawm cov roj hmab thiab tsim cov oxide txheej ntawm qhov chaw yuav ua rau kom cov conductivity, vim hais tias tom qab cov roj hmab yog oxidized, ib tug polarity yog generated ntawm cov carbon dub aggregates.
Cov pab pawg (xws li carboxyl) Cov pab pawg no muab txoj hauv kev luv dua rau cov hluav taws xob. Muaj ntau yam yuav tsum tau xav txog thaum xaiv cov khoom siv rau daim ntawv thov. Raws li deb li kev tiv thaiv kab mob; ib qho tseem ceeb parameter yog nws txwv lub peev xwm ntawm tam sim no kom dhau los ntawm cov rwb thaiv tsev txheej. Rau cov tam sim no ncaj qha (dc), nws yog qhov pom tseeb tias kev siv cov khoom siv hluav taws xob siab tuaj yeem txo cov thickness ntawm cov rwb thaiv tsev txheej; rau alternating tam sim no (ac), tus txheeb ze permittivity thiab poob yog qhov tsawg.
Dissipation factor kuj txo cov rwb thaiv tsev thickness.
Ethyl methacrylate (EMA) tuaj yeem hloov pauv los ntawm cov roj hmab silicone ua cov khoom siv rwb thaiv tsev siv PDMS sib xyaw rau ntau yam khoom siv hluav taws xob, cov khoom siv hluav taws xob thiab cov cua sov.
Kev ua tau zoo ntawm tib tus nqi raws li kev sib xyaw ua ke rau LDPE thiab PDMSA blends (50:50).
1. Kev tiv thaiv ruaj khov, CPE yuav tso tawm hydrogen chloride thaum rhuab los yog vulcanized, yog li stabilizers nrog acid absorption nyhuv yuav tsum tau siv nyob rau hauv cov mis, xws li calcium stearate, barium stearate, tribasic lead sulfate los yog magnesium oxide.
2. Plasticizing system. Ester plasticizers feem ntau siv hauv CPEZ, xws li dioctyl phthalate (DOP) thiab dioctyl adipate (DOA). Lawv solubility tsis nyob ze rau cov CM. Muaj peev xwm zoo. Kev siv DOA thiab DOS hauv cov roj hmab tuaj yeem ua rau cov roj hmab nrog kev ua haujlwm txias txias.
3. Lub vulcanization system ntawm CPE, CPE yog cov roj hmab saturated, thiab cov kab mob sulfur vulcanization tsis tuaj yeem vulcanize nws zoo. Qhov ntxov tshaj plaws ntawm CPE vulcanization system yog thiourea system, qhov zoo tshaj plaws ntawm uas yog Na-22, tab sis Na-22 muaj qeeb vulcanization ceev, tsis zoo aging kev ua tau zoo, siab compression set, thiab Na-22 yog ib tug loj carcinogen. Nws ua rau muaj ntxhiab tsw tsw, thiab nws txoj kev siv tau raug txwv rau txawv teb chaws.
4. Reinforceing filling system, CPE yog ib hom roj hmab uas tsis yog nws tus kheej, uas yuav tsum muaj lub zog txhawb kom ua tiav lub zog zoo dua. Nws lub zog filling system zoo ib yam li cov nplaum uas siv dav dav. Tus neeg sawv cev txhawb nqa feem ntau yog carbon dub thiab dawb carbon dub. Dawb carbon dub tuaj yeem txhim kho qhov tsim kua muag ntawm CPE, thiab tuaj yeem tsim cov txheej txheem metamethyl dawb los txhim kho qhov adhesion ntawm CPE thiab cov pob txha. ua ke. CPE muaj cov khoom ntim siab, thiab lub tshuab filling feem ntau suav nrog calcium carbonate, talcum hmoov, av nplaum, thiab lwm yam.
Post lub sij hawm: Jan-05-2023
