Ibintu bigira ingaruka kumeneka ya Ethylene propylene rubber wire hamwe na kabili ya insulation

Hamwe na Ethylene, propylene hamwe na diolefin ya cololymerisation ya etylene propylene diene reberi (EPDM) nkibikoresho byinsinga hamwe ninsinga zifite imyaka irenga 60. EPDM na polyvinyl chloride (PVC) hamwe na polyethylene ihuza (XLPE) hamwe nibindi bikoresho bitanga insuline bifite umwanya umwe udasimburwa, kandi ibyiza byihariye ni: ubuzima bwa serivisi igihe kirekire, kurwanya amazi na ogisijeni hamwe nubushyuhe bwumuriro, ubushyuhe bwinshi bwubushyuhe bwo gukora. Nkuko ikoreshwa rya EPDM mubijyanye no gukwirakwiza amashanyarazi ari ryinshi kandi ryagutse, ibisabwa byerekana ibipimo ngenderwaho bya EPDM nabyo birasabwa cyane, cyane cyane mubisabwa bimwe na bimwe byo mu rwego rwo hejuru, kugenzura ibipimo ngenderwaho byingenzi bya EPDM bifite ibisabwa bikomeye, gusa iyo ibipimo by'ingenzi bihuye biri mu rwego rushimishije, ku buryo EPDM yujuje ibisabwa, imikorere no gukoresha ibisabwa. Fata EPDM nk'urugero rwo gukora insinga ziciriritse zikoresha insinga na insulasiyo, niba imbaraga zingana, kurambura kuramba, imbaraga zo gusenyuka, gutakaza dielectric, kwihanganira amajwi nibindi bintu byingenzi byubukanishi n’amashanyarazi byibicuruzwa bishobora kuzuza ibisabwa, ibikoresho fatizo bya EPDM ya Ethylene, ubukonje bwa mooney, ibirimo diolefin nubuziranenge nibindi bipimo byingenzi bigomba kuba bifite imipaka ikomeye. Hariho ibintu byinshi bigira ingaruka kumeneka yo gusenyuka kwinsinga ya EPDM hamwe no kubika insinga. Usibye ibivugwa muri Ethylene yavuzwe haruguru, ibirimo diolefin nubuziranenge, ibirimo gel muri EPDM, hamwe no guhindura no gutezimbere uburyo bwo gutunganya bigira ingaruka zikomeye kubirwanya ibicuruzwa. Ntabwo ari ibintu byonyine kandi byonyine bigira ingaruka, ahubwo biranakorana kugirango bigire ingaruka zuzuye kumashanyarazi yibicuruzwa. Muri iyi nyandiko, bimwe mubintu bigira ingaruka kumurwanya wa EPDM byatoranijwe kubushakashatsi no gusesengura buri gihe, kugirango hatangwe ibisobanuro byingenzi bijyanye no guhuza ibicuruzwa bya EPDM kugirango insinga na insinga.

1 Ingaruka yibirimo bya ENB kumbaraga zo gusenyuka

Ibirimo bya ENB (igice kinini) <4.5%, hamwe no kwiyongera kwa ENB, imbaraga zo gusenya ibicuruzwa ziragabanuka; Ibirimo bya ENB (igice kinini) ≥4.5%, hamwe no kwiyongera kwa ENB (igice kinini), imbaraga zo gusenya ibicuruzwa ziriyongera.

2. Ingaruka yubusa bwa rubber kumbaraga zo gusenyuka

Iyo EPDM ikoreshwa mugutunganya ibikoresho bitanga amashanyarazi, ubuziranenge bwibikoresho burasabwa kurwego runaka. Ubusanzwe isuku ya EPDM igaragazwa mubijyanye nibirimo ivu, bigizwe ahanini nunyunyu ngugu zirimo ion zicyuma (vanadium, aluminium, fer, sodium, nibindi) byatangijwe mugihe cya polymerisation na nyuma yo gutunganywa, ndetse n’umwanda w’amahanga. Kubaho kwivu, bihwanye n 'inenge ' yumubiri, byoroshye guhinduka intambwe mubicuruzwa bya rubber ukoresheje amashanyarazi. Mugihe ivu riri muri EPDM ryiyongera, ibyuma bya ion mubyitegererezo nabyo biriyongera, kandi imbaraga zo gusenyuka kubicuruzwa byarangiye ziragabanuka. Ivu (ioni yicyuma, umwanda wamahanga) igira ingaruka runaka kumikorere yamashanyarazi yibicuruzwa. Urebye ingaruka za ioni zicyuma kumurwanya wibicuruzwa, ioni yicyuma murugero rwikizamini izakora umurima waho imbere mubicuruzwa bitewe numurima wumuriro wamashanyarazi wo hanze, uzahuzwa numurima wo hanze kugirango wangize ibicuruzwa. Mugihe ibikubiye mubyuma ion mubyitegererezo byiyongera, imbaraga zumurima wimbere zigenda ziyongera buhoro buhoro, kandi amahirwe yo kwegeranya hamwe kwicyuma cya ioni nayo ariyongera, bikavamo imbaraga zidasanzwe zumurima waho, kandi ibyo bintu byose bizagabanya kwihanganira ibicuruzwa. Icya kabiri, tekereza ku ngaruka z’umwanda w’amahanga ku kurwanya ibicuruzwa, ibicuruzwa bya reberi mu mwanda w’amahanga ahanini birimo umucanga n’ingese, n’ibindi, ubusanzwe, ibyo byanduye n’ibicuruzwa bya reberi ntibishobora guhuzwa cyane, kandi kuba bahari ku bicuruzwa bya reberi bihwanye na 'inenge ', bikangiza uburinganire n’ubusugire bw’ibicuruzwa bya reberi. Iyo amashanyarazi yo hanze y’umuriro mwinshi akora ku bicuruzwa bitanga amashanyarazi ya EPDM hamwe na 'inenge ', bizoroha cyane gucamo ibicuruzwa biva mu mashanyarazi kuri 'inenge ', bityo bikagabanya ibicuruzwa birwanya amashanyarazi.

3. Ingaruka yibirimo bya gel kumbaraga zo gusenyuka

Gel ni imiterere idasanzwe ya 'rubber ibice ' byakozwe mugihe cya polymerisation ya EPDM. Bitewe na morphologie yihariye n'imiterere yabyo, imikoranire yayo numuyoboro usanzwe wa molekile mubicuruzwa bya reberi usanga ari ntege nke, kandi kubaho kwayo birashobora no gufatwa nk ''umwanda ' usigaye mubicuruzwa bya reberi. . Iminyururu ifite intege nke kurenza iyo hagati ya EPDM isanzwe iminyururu. Imbaraga zikorana hagati yubuso bwa geli nu munyururu usanzwe wa molekile zidakomeye kurenza iyo hagati yiminyururu isanzwe ya EPDM, kandi hejuru ya gel ntabwo byanze bikunze 'byuzuye ' n'iminyururu ya EPDM.

Ubuso bwa gel ntabwo byanze bikunze 'bwuzuye ' n'iminyururu ya EPDM, kandi hashobora kubaho 'icyuho '. Kubera ko kubaho kwa gele bizagira ingaruka kuburinganire bwibicuruzwa, ibicuruzwa bitunganijwe bizakora umurima ugenda uzenguruka gele munsi yumuriro wumuriro w'amashanyarazi wo hanze. Uko itandukaniro riri hagati ya morphologie n'imiterere ya gel hamwe n'iminyururu ya EPDM ikikije, niko bigenda byiyongera kumurima wa gradient, niko byoroshye kumena ubuso bwa gel bufite imbaraga nke ugereranije kandi hashobora kubaho 'icyuho ' mubicuruzwa. Uko itandukaniro riri hagati yiminyururu ya EPDM, niko umurima ugenda urushaho gukomera, niko bishoboka cyane gusenya hejuru ya gel aho imbaraga zigereranijwe zidakomeye kandi hashobora kubaho 'icyuho ', bigatuma 'inenge ' mubicuruzwa, biganisha kumeneka hakiri kare, bityo bikagabanya imikorere yo gusenyuka kwicyitegererezo.

4. Ingaruka zo gutunganya formulaire kumbaraga zo gusenyuka

Gutunganya amata ni ihuriro ryingenzi mugutunganya ibicuruzwa bya EPDM mubicuruzwa bitanga amashanyarazi, ariko kandi nikimwe mubintu byingenzi bigira ingaruka kumikorere yibicuruzwa byamashanyarazi. Guhindura no gutezimbere uburyo bwibanze bwo gutunganya no kongeramo inyongeramusaruro y’amashanyarazi irashobora kunoza imikorere yimikorere yibicuruzwa bitanga amashanyarazi. Nyuma yibikoresho bimwe bya EPDM bitunganijwe bikurikije formulaire zitandukanye, imiterere yubukanishi ntabwo ihinduka cyane, kandi iyanyuma iri hejuru ya 5% gusa kurenza iyambere, ariko imbaraga zo kumeneka amashanyarazi zifite impinduka zikomeye, naho iyanyuma iri hejuru ya 60% ugereranije niyambere. Impamvu nyamukuru yo kunoza imitunganyirize yubukanishi n’amashanyarazi nuko uruganda rukora insinga zo mu nyanja rwateje imbere urugero rwa diisopropyl benzene peroxide mugihe cyo gutunganya ibicuruzwa, kuburyo imigozi ibiri mumurongo wuruhande rwa ENB ihujwe rwose, kandi imigozi ibiri isigaye iragabanuka, kandi kaolin hamwe nibindi byongeramo amashanyarazi byongeweho, kandi byongera amatangazo ya adsorbent hamwe nibikorwa. Ingingo ebyiri zavuzwe haruguru zirahagije kugirango zerekane akamaro ka formula yo gutunganya kugirango tunoze imikorere yamashanyarazi yamashanyarazi ya EPDM.

5.Umwanzuro

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