Chlorinated Polyethylene (cpe) yog dab tsi thiab nws siv qhov twg?
Argonated polyethylene cpe qis density polyethylene 2 silicone roj hmab sib xyaw cable rwb thaiv tsev cov khoom siv yog qis density polyethylene (LDPE) thiab polydimethylsiloxane sib xws los ntawm ethyl methacrylate (EMA) (PDMS) roj hmab sib xyaw yog cov khoom siv rwb thaiv tsev zoo tiv taus cua sov. Ntau yam khoom siv hluav taws xob, khoom siv kho tshuab thiab khoom siv thermal ntawm qhov sib xyaw tau kawm. Cov txiaj ntsig qhia tau tias qhov sib xyaw tuaj yeem siv ua cov khoom siv rwb thaiv tsev Thermal, piv nrog cov khoom siv roj hmab silicone, nws muaj kev ua tau zoo dua.
Tau ntev lawm, tib neeg tau suav tias cov roj hmab silicone yog cov roj hmab tshwj xeeb rau cov xov hlau hauv ntau qhov kub thiab txias. Txawm li cas los xij, tus nqi kim ntawm cov roj hmab silicone txwv nws qhov kev siv.
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 siv dav ua cov polymer rwb thaiv tsev hauv cov xov hlau thiab cov cables nruab nrab thiab qis voltage. LDPE tsis yog tsuas yog tus nqi qis xwb tab sis kuj tseem qis dielectric tas mus li thiab poob factor, siab resistivity, thiab cov khoom siv kho tshuab zoo heev hauv qab qhov kub thiab txias 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 lag luam. Piv nrog cov khoom siv rwb thaiv tsev roj hmab silicone, kev sib xyaw ntawm polydimethylsiloxane (PDMS) thiab LDPE muaj qhov zoo ntawm tus nqi qis kom tau raws li ntau qib, Ntxiv rau qhov xav tau tshwj xeeb ntawm cov cables rau kev xa hluav taws xob, kev tswj hwm thiab cov cuab yeej, tib neeg tau tsim ntau yam khoom siv rwb thaiv tsev polymer tshiab. Txawm li cas los xij, cov khoom siv kho tshuab thiab kev tiv thaiv cua sov ntawm cov khoom siv hluav taws xob qis-voltage (<10kV) siab dua li...
Cov khoom siv hluav taws xob tseem ceeb dua.
Piv txwv li; cov txheej rwb thaiv tsev cable rau lub cub tawg yuav tsum muaj kev ruaj khov zoo ntawm cov khoom siv kho tshuab ntawm qhov kub siab. Ib yam li ntawd; cov kev cai rau cov cables uas tsis muaj pa luam yeeb tsawg, roj-resistant, thiab nplaim taws-retardant kuj txawv. Yog li ntawd, lub cable yuav tsum Lub sijhawm thov txiav txim siab qhov kev cai rau kev ua haujlwm tshwj xeeb ntawm lub cable. Kev puas tsuaj oxidative ntawm cov roj hmab thiab kev tsim cov txheej oxide ntawm qhov chaw yuav ua rau muaj kev coj ua ntau ntxiv, vim tias tom qab cov roj hmab raug oxidized, ib qho polarity yog tsim ntawm cov pa roj carbon dub aggregates.
Cov pawg (xws li carboxyl) Cov pawg no muab txoj hauv kev luv dua rau cov electrons. Muaj ntau yam uas yuav tsum xav txog thaum xaiv cov khoom siv rau daim ntawv thov. Raws li kev rwb thaiv tsev cable; ib qho tseem ceeb parameter yog nws txwv qhov peev xwm ntawm tam sim no kom dhau los ntawm cov txheej rwb thaiv tsev. Rau tam sim no ncaj qha (dc), nws yog qhov tseeb tias kev siv cov ntaub ntawv siab-tsis kam tuaj yeem txo qhov tuab ntawm cov txheej rwb thaiv tsev; rau alternating tam sim no (ac), qhov kev tso cai thiab kev poob qis yog qhov tsawg.
Qhov cuam tshuam ntawm kev tawg kuj tseem txo cov tuab ntawm cov rwb thaiv tsev.
Ethyl methacrylate (EMA) feem ntau tuaj yeem hloov los ntawm roj hmab silicone ua cov khoom siv rwb thaiv tsev siv PDMS sib xyaw rau ntau yam khoom siv hluav taws xob, khoom siv kho tshuab thiab tiv taus cua sov.
Qhov ua tau zoo ntawm tib tus nqi li cov khoom sib xws rau LDPE thiab PDMSA sib xyaw (50:50).
1. Lub kaw lus tiv thaiv ruaj khov, CPE yuav tso tawm hydrogen chloride thaum cua sov lossis vulcanized, yog li cov stabilizers nrog cov nyhuv nqus kua qaub yuav tsum tau siv rau hauv cov mis, xws li calcium stearate, barium stearate, tribasic lead sulfate lossis magnesium oxide.
2. Lub kaw lus yas. Cov tshuaj ester plasticizers feem ntau siv hauv CPEZ, xws li dioctyl phthalate (DOP) thiab dioctyl adipate (DOA). Lawv cov kev daws teeb meem ze rau cov ntawm CM. Muaj peev xwm zoo. Kev siv DOA thiab DOS hauv roj hmab tuaj yeem ua rau roj hmab tiv taus txias zoo heev.
3. Lub kaw lus vulcanization ntawm CPE, CPE yog cov roj hmab saturated, thiab cov tshuaj sulfur vulcanization system feem ntau tsis tuaj yeem vulcanize nws zoo. Daim ntawv thov thawj zaug ntawm CPE vulcanization system yog thiourea system, qhov zoo tshaj plaws yog Na-22, tab sis Na-22 muaj qhov ceev vulcanization qeeb, kev laus tsis zoo, kev teeb tsa siab, thiab Na-22 yog ib qho carcinogen loj heev. Nws tsim cov ntxhiab tsw tsis zoo, thiab nws siv tau txwv tsis pub siv rau txawv teb chaws.
4. Lub kaw lus puv uas txhawb nqa, CPE yog ib hom roj hmab uas tsis txhawb nqa nws tus kheej, uas xav tau lub kaw lus txhawb nqa kom ua tiav lub zog zoo dua. Nws lub kaw lus puv uas txhawb nqa zoo ib yam li cov nplaum 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 tsis kam ntawm CPE, thiab tuaj yeem tsim lub kaw lus dawb metamethyl los txhim kho qhov kev sib txuas ntawm CPE thiab pob txha. ua ke. CPE muaj cov khoom ntim siab, thiab lub kaw lus puv feem ntau suav nrog calcium carbonate, hmoov talcum, av nplaum, thiab lwm yam.
Lub sijhawm tshaj tawm: Lub Ib Hlis-05-2023
