Abstract: Qhov kev sib txuas hla, kev faib tawm, cov txheej txheem thiab cov khoom sib txuas ntawm cov khoom lag luam hauv qab zib Polyethylene Insulating cov khoom siv hauv kev thov thiab siv nrog rau Qhov cuam tshuam cuam tshuam rau kev sib txuas ntoo khaub lig ntawm cov khoom siv tau qhia.
Cov ntsiab lus: Cov kab ke sib txuas lus sib txuas; Ntuj hla kev sib txuas; Polyethylene; Rwb thaiv tsev; Hlau thiab Cable
Silane Crossed Polyethylene cable Khoom yog tam sim no dav siv hauv cov xaim thiab cable kev lag luam ua cov khoom siv insulating rau cov roj hluav taws xob tsawg. Cov khoom siv hauv kev tsim cov ntoo khaub lig-txuas hlau thiab cable, yooj yim rau cov nqi sib txuas thiab lwm yam zoo, tau ua rau cov khoom ua rau cov khoom lag luam -Txoj kev hla hla txuas nrog cable nrog rwb thaiv tsev.
1.silane hla-txuas cable khoom hla-txuas cov ntsiab lus
Muaj ob txoj kev tseem ceeb uas muaj feem nrog ua cov kab lo lo ntxhuav txuas-txuas nrog polyethylene: grafting thiab hla kev sib txuas. Nyob rau hauv cov txheej txheem graft, cov polymer poob rau ntawm tertiary carbon atom nyob rau hauv qhov kev ua ntawm dawb radicals, uas muaj kev sib tw nyob rau hauv qhov kev ua yeeb yaj kiab dawb los tsim cov khoom lag luam polymer uas muaj cov khoom lag luam trioxysilyl pab pawg. Nyob rau hauv cov txheej txheem sib txuas, lub thawv dai polymer yog thawj hydrolysed nyob rau hauv muaj cov dej los tsim Silanol, thiab ib sab sib khi, yog li hla cov polymer Macromolecules.
2.Silane hla-txuas cable cov khoom siv thiab nws txoj kev tsim hlua
Raws li koj paub, muaj ob-kauj ruam thiab ib hom kev tsim khoom rau cov cabe sib txuas thiab lawv cov cable. Qhov sib txawv ntawm ob-kauj ruam txoj kev dag lus dag nyob rau hauv qhov chaw tsim khoom siv cable cabe no-qib, cov txheej txheem grafting hauv cable raug tsob nroj rau cov ib-qib qauv. Ob-theem ntshiv hla-txuas Polyethylene Insulating cov khoom siv nrog cov polyethylene tshaj tawm nrog cov khoom lag luam thiab b cov khoom yog cov catalalst ntxhais batch. Lub insulating core yog tom qab ntawd hla-txuas hauv dej sov lossis chav dej.
Muaj lwm hom ntawm ob-theem lo lus ntseej hla Polyethylene insulator, los ntawm kev qhia cov ntaub ntawv yas los ntawm synane kom tau polyethylene nrog cov pob zeb ceg nplej.
Ib txoj kev ib-kauj ruam tseem muaj ob hom, cov txheej txheem ib txwm muaj yog ntau yam tsim tshwj xeeb cov ntaub ntawv tshwj xeeb hauv ib kauj ruam los ua kom tiav kev sib tsoo thiab kev rho tawm ntawm Cable Rwb thaiv tsev kawm, hauv cov txheej txheem no, tsis muaj cov granulation, tsis tas yuav tsum muaj cov khoom siv cable cog kev koom tes, los ntawm lub Hoobkas cable kom tiav ib leeg. Qhov kev sib tw uas ib-qib qis dua cross-txuas cov khoom siv tsim khoom siv cable thiab tsim cov tshuab feem ntau yog txawv tebchaws los ntawm txawv teb chaws thiab yog kim.
Lwm hom ntawm ib-qib ntsoo hla-txuas Polyethylene rwb thaiv tsev cov khoom siv raws li cov qauv siv cable ntawm kev sib xyaw ua ke, ntim thiab muag, tsis muaj cov khoom siv thiab b Cov ntaub ntawv, cable cog tuaj yeem ncaj qha rau hauv Extruder kom ua tiav ib kauj ruam ntawm tib lub sijhawm sib tsoo ntawm cov cable rwb thaiv tsev kawm. Cov cim tshwj xeeb ntawm hom no yog tsis muaj qhov xav tau tshwj xeeb cov extruders, raws li txoj kev ua kom tiav rau hauv ib qho kev tshem tawm ntawm ib leeg PVC
3. Zaj Qauv Muaj Peev Xwm
Cov qauv ntawm cov lo lo lo ntxhuav txuas-txuas nrog polyethylene cable cov khoom siv yog feem ntau muaj ntawm cov khoom siv resin, antioxidant, polymerization inhibitor, catalyst, thiab lwm yam.
(1) Lub hauv paus tso hluav taws xob feem ntau yog cov tuab tuab polyethylene (ldpe) ntawm cov khoom siv hluavtaws rov qab (MI) ntawm 2, tab sis tsis ntev los no, LLDPE) kuj tau muaj siv los yog ib feem siv los ua lub hauv paus resin rau cov khoom no. Cov txiaj ntsig sib txawv feem ntau muaj kev cuam tshuam tseem ceeb ntawm kev tsim khoom thiab cov qauv sib txawv, yog li cov qauv tsim los ntawm kev siv cov khoom sib txawv lossis cov khoom sib txawv ntawm cov tuam txhab sib txawv.
(2) Tus pib siv tau siv yog diisopropyl peroxide (DCP), tus yuam sij yog kom nkag siab qhov teeb meem, tsawg dhau los ua kom muaj kev ua kom hniav zom zaws tsis txaus; Ntau dhau lawm ua rau Polyethylene hla kev sib txuas, uas txo nws cov kua txiv, qhov saum npoo ntawm extruded insuring core ntxhib, nyuaj rau nyem nyem. Raws li tus nqi ntawm kev pib txuas ntxiv yog qhov me me thiab rhiab, nws yog ib qho tseem ceeb kom tawg tusyees, yog li nws yog feem ntau ntxiv ua ke nrog cov silane.
(3) qhov chaw nyob yog feem ntau siv cov txhab vinyl unsaturated, suav nrog Vinyl Trietoxysilane (A2171, yog li xaiv A2171 ntau tus neeg. Ib yam li ntawd, muaj teeb meem ntawm kev ntxiv cov zaub mov seem, cov khoom siv cable tam sim no yog sim ua kom tau cov nqi, vim tias cov kab nyiaj sib txawv yog txawv, tus nqi kim dua.
(4) anti-oxidant yog kom ntseeg tau tias lub luag haujlwm ntawm polyethylal kev laus, yog li cov txheej txheem sib xyaw ua ke, yog li cov txheej txheem sib xyaw ua ke, ntxiv rau kev tiv thaiv oxidant Kom ceev faj, tus nqi ntxiv kom xav txog qhov nyiaj ntawm DCP kom phim kev xaiv. Hauv ob-kauj ruam hla kev sib txuas cov txheej txheem, feem ntau ntawm cov antioxidant tuaj yeem ntxiv rau hauv cov catalalst master batch, uas tuaj yeem txo qhov kev cuam tshuam rau cov txheej txheem grafting. Hauv ib-kauj ruam hla kev sib txuas cov txheej txheem, cov antioxidant yog tam sim no nyob rau hauv tag nrho cov txheej txheem sib xyaw, yog li kev xaiv ntawm hom thiab tus nqi yog qhov tseem ceeb dua. Feem ntau siv tshuaj antioxidants yog 1010, 168, 330, thiab lwm yam.
(5) Polymerization ntxiv rau hauv kev txiav txim rau qee cov kev sib txuas lus los ntawm kev sib txuas ntawm C2C cross-txuas, yog li kev txhim kho Kev ua kom txaus siab, ntxiv rau, ntxiv rau qhov ua ntej ntawm cov kev ua kom khov ntawm cov pob zeb polyethylene, txhawm rau txhim kho lub sijhawm ntev ntawm cov khoom xa khoom.
(6) catalysts feem ntau yog orgototin derivatives (tshwj tsis yog rau ntuj crossltin durrinquin durrate (DBDTL), uas feem ntau ntxiv rau hauv daim ntawv ntawm masterbatch. Hauv ob-kauj ruam txheej txheem, cov khoom siv (cov ntaub ntawv) thiab cov khoom siv catalyst ua ntej tau sib xyaw ua ke ua ntej ua ke los tiv thaiv cov khoom ua ntej-crosslinking ntawm cov khoom siv. Nyob rau hauv cov ntaub ntawv ntawm ib-qib lo lus zoo hla-txuas cov teeb meem polyethylene, yog li tsis muaj kev sib txuas ua ntej tsis tas yuav ntim cais.
Ib qho ntxiv, muaj cov lus sib xyaw ua ke muaj nyob ntawm kev ua lag luam, uas yog feem ntau siv cov neeg ua hauj lwm tsis zoo, thiab feem ntau siv nyob rau hauv ib-qib qis dua kev sib txuas.
Yog li ntawd, cov qauv ntawm cov lo lo ntsiab sib xws-txuas nrog cov ntaub ntawv tsim nyog, tab sis muaj cov ntaub ntawv tsim nyog, tab sis tsim nyog cov ntaub ntawv tsim nyog, tab sis tsim nyog ntau lawm ua tiav, tab sis tsim nyog ntau lawm ua tiav kom tiav, uas yuav tsum tau tag nrho Kev nkag siab txog lub luag haujlwm ntawm cov khoom siv hauv cov qauv tsim thiab txoj cai ntawm lawv qhov kev cuam tshuam rau kev ua tau zoo thiab lawv cov kev sib nrig sib.
Nyob rau hauv ntau ntau yam cable cov ntaub ntawv, silane cross-txuas cov khoom siv cable (ob-kauj ruam lossis ib-kauj ruam tshwm sim los yog cov khoom siv polyvinyl thiab Polyethylene (PE) Khoom siv cable, qhov kev rho tawm cov tshuaj cable, txawm tias nyob rau hauv kev sib txuas ntawm lub cev cable, lossis cov txheej txheem tshuaj ntsuab, tsis muaj cov txheej txheem tshuaj lom neeg tshwm sim , Yog li, piv ntawm kev sib piv, kev tsim cov khoom qab zib cross-txuas cable cov ntaub ntawv thiab cable rwb thaiv tsev extrusion, txheej txheem tswj tau tseem ceeb dua.
4. Ob-qib lo lus ntsag hla polyethylene rwb thaiv tsev cov txheej txheem ntau lawm
Cov txheej txheem ntau lawm ntawm ob-qib lo lus ntsag hla polyethylene rwb thaiv tsev cov khoom siv tuaj yeem sawv cev ntawm daim duab 1.
Daim duab 1 txheej txheem ntau lawm ntawm ob-kauj ruam lo lus ntseej hla polyethylene insulating cov khoom a
Qee cov ntsiab lus tseem ceeb hauv cov txheej txheem ntau lawm ntawm ob-kauj ruam bare-txuas Polyethylene rwb thaiv tsev:
(1) ziab. Raws li cov polyethylene resin muaj cov dej me me, thaum muab cov dej ntws tawm sai sai nrog cov tsiaj txhu cov dej nrawm nrawm, uas ua rau cov txiv ntoo hla, cov ua ntej ua ntej hla kev sib txuas ua ntej. Cov khoom tiav lawm tseem muaj cov dej tom qab dej txias, uas tuaj yeem ua ntej-crosslinking yog tias tsis tshem tawm, thiab yuav tsum tau qhuav. Txhawm rau kom ntseeg tau tias qhov zoo ntawm ziab, ib chav tsev qhuav yog siv.
(2) Metering. Raws li qhov tseeb ntawm cov khoom tsim yog qhov tseem ceeb, ib qho kev poob qis uas poob-hnyav uas tau siv. Cov polyethylene cob thiab antioxidant yog ntsuas thiab pub ntawm cov chaw nres nkoj ntawm cov twj tso kua mis nyob rau hauv qhov thib ob lossis thib peb teev ntawm Extruder.
(3) kev sib tsoo. Cov txheej txheem grafting ntawm cov khoom seem yog ua tiav hauv Extruder. Cov txheej txheem txheej txheem ntawm extruder, suav nrog qhov kub, ntsia hlau ua ke, yuav tsum ua raws li cov ntaub ntawv hauv thawj ntu ntawm cov khoom noj muaj txiaj ntsig, thaum pib ua kom lub peroxide tsis xav tau , thiab tias cov khoom siv sib xyaw ua ke nyob rau ntu ob ntawm Extruder yuav tsum yog Decompos yuav tsum tau decomposy thiab tus txheej txheem sib luag, extruder ntu kub (LDPE) muaj nyob hauv Table 1.
Cov lus 1 kub ntawm ob-kauj ruam extruder aones
| Ua Haujlwm Zone | Tsam 1 | Zone 2 | Thaj chaw 3 ① | Thaj Tsam 4 | Thaj Chaw 5 |
| Kub P ° C | 140 | 145 | 120 | 160 | 170 |
| Ua Haujlwm Zone | Thaj Chaw 6 | Thaj 7 | Tsam 8 | Zone 9 | Lub qhov ncauj tuag |
| ° C | 180 | 190 | 195 | 205 | 195 |
①SIS qhov chaw nyob hauv qhov twg.
Qhov ceev ntawm extruder ntsia hlau txiav txim siab lub sijhawm nyob hauv lub sijhawm thiab cov kev sib xyaw ua ke ntawm cov extruder, yog tias lub sijhawm nyob hauv luv luv, lub peroxide decomposition ua tsis tiav; Yog hais tias lub sijhawm nyob ntev ntev dhau, lub viscosity ntawm extruded cov khoom nce. Feem ntau, lub sijhawm nyob hauv nruab nrab ntawm cov granule hauv extruder yuav tsum tau tswj nyob rau hauv tus pib kev txiav txim siab ib nrab-lub neej ntawm 5-10 zaug. Kev pub zaub mov ceev tsis tsuas yog cuam tshuam rau lub sijhawm nyob hauv lub sijhawm, tab sis kuj ntawm cov khoom sib xyaw, tab sis xaiv qhov kev pub mis pub dawb kuj tseem ceeb heev.
(4) ntim. Ob-qib txhab cuam tshuam hla cov khoom siv insulating yuav tsum tau ntim rau hauv aluminium-hnab yas sib xyaw kom tshem tawm cov cua noo.
5. Ib-theem lo lus ntseej hla-txuas Polyethylene Insulating Khoom Siv Ntau Lawm
Ib-qib lo lus zoo hla-txuas Polyethylene rwb thaiv tsev cov khoom, yog li lub cable rwb thaiv tsev cov khoom kub yog qhov siab dua li ob-kauj ruam txoj kev. Txawm hais tias ib-qib lo lus ntso hla-txuas Polyethylene rieldic rwb thaiv tsev mis tau raug lees paub los ntawm qhov kub thiab txias, tab sis yog ib-qib qis dua-txuas Polyethylene Rwb thaiv tsev cov nroj tsuag ntau dua rau qhov tseem ceeb ntawm qhov tseem ceeb ntawm kev xaiv kom raug qhov tseeb, qhov dav dav pom zoo extrusion kub yog qhia hauv Table 2.
Cov lus 2 Ib-kauj ruam Extruder Kub ntawm txhua Cheeb Tsam (Chav: ℃)
| Qhov chaw | Tsam 1 | Zone 2 | Thaj Chaw 3 | Thaj Tsam 4 | Flange | Lub taub hau |
| Qho so | 160 | 190 | 200 ~ 210 | 220 ~ 230 | 230 | 230 |
Qhov no yog ib qho ntawm cov tsis muaj zog ntawm ib-qib lo lus ntsag hla-txuas Polyethylene txheej txheem, uas feem ntau tsis tsim nyog thaum feem ntau tsis xav tau nyob rau hauv ob kauj ruam.
6.Production Khoom siv
Cov cuab yeej siv cov khoom siv yog qhov tseem ceeb lav ntawm cov txheej txheem tswj. Kev tsim cov xov tooj lo lo nkas crown thiaj li yuav muaj cov txheej txheem kev tswj hwm zoo heev, yog li kev xaiv ntawm cov khoom siv cov khoom siv yog qhov tseem ceeb.
Kev tsim ob kauj ruam hla kev sib txuas-rwb los ntawm cov khoom siv tsis zoo, tam sim no muaj peev xwm ua tau raws cov txheej txheem kev tswj hwm cov txheej txheem ntawm cov txheej txheem ntawm cov txheej txheem ntawm cov txheej txheem ntawm cov txheej txheem ntawm cov txheej txheem ntawm cov txheej txheem thiab kev xaiv ntawm Lub Twin-ntsia hlau Extruder kom ntseeg tau tias cov khoom nyob hauv lub sijhawm, kev xaiv ntawm ntshuam qhov hnyav hnyav uas yuav ua rau muaj qhov tseeb ntawm cov khoom xyaw. Tau kawg muaj ntau cov ntsiab lus ntawm cov khoom siv uas yuav tsum tau muab tag nrho cov xim.
Raws li tau hais ua ntej lawm, cov khoom lag luam uas txuas nrog cov khoom siv sib txuas ua ke, qhov laj thawj yog qhov tsis muaj kev koom tes ntawm cov khoom lag luam thiab cov kws tshawb fawb thiab txheej txheem cov kws tshawb fawb.
7.Silane Ntuj Hla Polyethylene Rwb thaiv tsev cov khoom
Silane ntuj hla polyethylene insulating cov khoom tsim nyob rau hauv lub xyoo tsis ntev los no tuaj yeem hla dhau ob peb hnub, tsis muaj chav dej lossis dej sov. Piv nrog tsoos lo lus silane hla kev kev sib txuas, cov ntaub ntawv no tuaj yeem txo cov nqi tsim khoom rau cable tsim qauv thiab nce ntau dua kev ua tau zoo. Silane ib txwm hla-txuas Polyethylene rwb thaiv tsev yog nce lees paub thiab siv los ntawm cov tuam txhab cable.
Nyob rau hauv xyoo tsis ntev los no, domestic barned-txuas Polyethylene rwb thaiv tsev muaj matured thiab tau raug tsim nyob rau hauv cov nqe lus piv rau cov khoom siv txawv teb.
7. 1 Tswv yim tsim tswv yim rau cov chaw ua kom cov neeg nyob hauv Polyethylene cov hauv paus
Silane ntuj hla polyethylene rulty yog tsim nyob rau hauv ob-kauj ruam cov txheej txheem muaj kev sib tw ua ke, antioxidant, polymerisation inhibitor thiab catalyst. Cov qauv ntawm kev ua si hauv qab zib cov kab mob sab nraud ntawm cov khoom sib txuas ntawm cov khoom lag luam thiab xaiv cov dej qab zib ntau dua li cov tshuaj so dej sov uas txuas nrog cov tshuaj tiv thaiv sov polyethylene insulators. Kev siv cov ntaub ntawv nrog cov nqi ua ke ntau dua ua ke nrog kev sib txuas ntxiv yuav ua rau cov kab ke sib txuas yuav ua rau cov kab ke sib txuas txawm tias tsis tshua muaj cua sov thiab nrog cov noo noo.
Cov ntaub ntawv siv rau kev sib txuas lus txawv teb cov ntsiab lus Polyethylenisation yog tswj hwm cov tub rog siab, uas tau tsim los ntawm cov khoom sib tw siab los ntawm kev tsim kom muaj cov pob zeb loj. Lub hauv paus resin, tus pib thiab ua si uas siv rau hauv daim ntawv qhia yuav tsum tau sib txawv thiab hloov kho hauv cov nqe lus ntawm ntau yam thiab ntxiv.
Kev xaiv ntawm cov tawm tsam thiab kev hloov kho ntawm nws cov kev hloov pauv, raws li kev nce qib ntawm cov kab ke uas ua rau muaj ntau txoj kev sib cav sib ceg. Txhawm rau txhim kho kev ua kom haum thiab cov khoom sib txawv ntawm cov khoom siv rau cov tsiaj ntawv txuas ntxiv rau kev ua kom zoo rau CC CrossLinking thiab ua ntej-crosslinking.
Tsis tas li ntawd, catalysts ua lub luag haujlwm tseem ceeb hauv kev nce tus nqi hla thiab yuav tsum tau xaiv kom muaj cov khoom siv hlau hloov khoom siv sib pauv hlau-dawb.
7. 2 lub sijhawm hla ntawm cov kab polyethylene insulations
Lub sijhawm yuav tsum ua kom tiav cov ntoo khaub lig-kev sib txuas ntawm kev ua kom muaj zog ntawm qhov kub thiab txias, av noo thiab cov av noo thiab cov roj av txheej. Qhov siab dua qhov kub thiab cov av noo, lub thinner lub rwb thaiv tsev txheej, lub sijhawm luv luv ntawm cov sij hawm hla kev uas yuav tsum tau ua, thiab ntev dua. Raws li qhov ntsuas kub thiab cov av noo sib txawv los ntawm thaj chaw mus rau thaj tsam thiab ntawm lub caij nyoog thiab cov huab cua sov thiab huab cua sov thiab tag kis yuav txawv. Yog li no, thaum siv cov khoom siv, tus neeg siv yuav tsum txiav txim siab hla lub sijhawm sib txuas thiab cov av noo, nrog rau cov kev sib cais ntawm cov roj pawv txheej txheej.
Lub Sijhawm Post: Lub Yim-13-2022