Izakhiwo ezifanele zerabha ye-butyl ziyengezwa.Lezi zakhiwo zikhona nakuma-butyl anamathelayo
(1) Ukungena komoya
Ijubane lokuhlakazeka kwegesi ku-polymer lihlobene nomsebenzi oshisayo wama-molecule we-polymer.Amaqembu e-methyl eseceleni ochungechungeni lwamangqamuzana enjoloba ye-butyl ahleleke ngokuminyene, okunciphisa ukusebenza okushisayo kwama-molecule e-polymer.Ngakho-ke, ukungena kwegesi kuphansi futhi ukuqina kwegesi kuhle.
(2) Ukushintshashintsha kwezinga lokushisa
Ama-vulcanizate erabha ye-butyl anokumelana nokushisa okuhle kakhulu nokungaguquguquki.Irabha ye-butyl eyenziwe ngesulfure ingasetshenziswa emoyeni isikhathi eside ku-100 ℃ noma izinga lokushisa eliphansi kancane.Izinga lokushisa elisetshenziswayo lerabha ye-resin evundisiwe ye-butyl lingafinyelela ku-150 ℃ - 200 ℃.Ukuguga komoyampilo oshisayo werabha ye-butyl kungokohlobo lokuwohloka, futhi umkhuba wokuguga uyathamba.
(3) Ukumuncwa kwamandla
Isakhiwo samangqamuzana enjoloba ye-butyl sishoda ngamabhondi aphindwe kabili, futhi ukuminyana kokuhlakazeka kwamaqembu e-side chain methyl kukhulu, ngakho kunezici ezinhle kakhulu zokuthola ukudlidliza namandla omthelela.Izici eziphindiselayo zenjoloba ye-butyl azikho ngaphezu kuka-20% phakathi kwebanga lokushisa elibanzi (- 30-50 ℃), okukhombisa ngokusobala ukuthi ikhono lenjoloba ye-butyl lokuthola imisebenzi yemishini liphakeme kunamanye amarabha.Impahla edambisayo yerabha ye-butyl ngesivinini esikhulu sokuguquguquka iyingxenye ye-polyisobutylene.Ngokwezinga elikhulu, alithintwa izinga lokushisa lohlelo lokusebenza, izinga lokungashintshiwe, ukwakheka kwe-vulcanization kanye noshintsho lwefomula.Ngakho-ke, irabha ye-butyl yayiyinto efanelekile yokuvala umsindo nokunciphisa ukudlidliza ngaleso sikhathi.
(4) Indawo yokushisa ephansi
Isakhiwo sesikhala seketango lemolekyuli yerabha ye-butyl i-spiral.Nakuba kunamaqembu amaningi e-methyl, iqembu ngalinye lamaqembu e-methyl ahlakazeke nhlangothi zombili ze-spiral linyakaziswa i-engeli.Ngakho-ke, iketanga lemolekyuli yerabha ye-butyl lisemnene, linezinga lokushisa eliphansi lokushintsha kwengilazi nokunwebeka okuhle.
(5) I-ozone nokumelana nokuguga
Ukugcwala okuphezulu kweketango lamangqamuzana erabha yerabha ye-butyl kuyenza ibe nokumelana ne-ozone ephezulu kanye nokumelana nokuguga kwesimo sezulu.Ukumelana ne-ozone kuphakeme ngokuphindwe ka-10 kunerabha yemvelo.
(6) Ukuguquguquka kwamakhemikhali
Isakhiwo esigcwele kakhulu serabha ye-butyl siyenza ibe nokungaguquki kwamakhemikhali okuphezulu.Irabha ye-butyl inokumelana nokugqwala okuhle kakhulu kuma-acid amaningi angaphili nama-organic acid.Nakuba ingamelani ne-concentrated oxidizing acids, njenge-nitric acid ne-sulfuric acid, ingamelana nama-non-oxidizing acids nama-medium concentration oxidizing acids, kanye nezixazululo ze-alkali nezixazululo zokubuyisela i-oxidation.Ngemva kokucwiliswa ku-70% we-sulfuric acid amasonto angu-13, amandla nokwelulwa kwerabha ye-butyl akuzange kulahleke, kuyilapho imisebenzi yenjoloba yemvelo kanye nerabha ye-styrene butadiene yehliswa kakhulu.
(7) Ukusebenza kukagesi
I-insulation kagesi kanye nokumelana kwe-corona kwerabha ye-butyl kungcono kunokwerabha elula.I-resistivity yevolumu iphakeme izikhathi ezingu-10-100 kunaleyo yerabha elula.I-dielectric constant (1kHz) ingu-2-3 kanye nesici samandla (100Hz) ngu-0.0026.
(8) Ukumuncwa kwamanzi
Izinga lokungena kwamanzi lerabha ye-butyl liphansi kakhulu, futhi izinga lokumunca amanzi ekushiseni okujwayelekile liphansi kunelinye irabha, kuphela i-1 / 10-1 / 15 yokugcina.
