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Irabha yeBrominated Butyl (BIIR)

Inkcazelo emfutshane:

Irabha ye-butyl ye-Brominated (BIIR) yi-isobutylene isoprene copolymer elastomer equlethe i-bromine esebenzayo.Ngenxa yokuba irabha ye-butyl ye-brominated inekhonkco eliphambili eligcwele irabha ye-butyl, ineempawu ezahlukeneyo zokusebenza ze-butyl polymer, njengamandla aphezulu omzimba, ukusebenza kakuhle kokudambisa i-vibration, ukunyanzeliswa okuphantsi, ukumelana nokwaluphala kunye nokumelana nokuguga kwemozulu.Ukuveliswa kunye nokusetyenziswa kwe-halogenated butyl yerabha yangaphakathi iphumelele ivili le-radial langoku kwiinkalo ezininzi.Ukusetyenziswa kweepolymers ezinjalo kwi-compound ye-liner yangaphakathi yesondo kunokuphucula ukusebenza koxinzelelo, ukuphucula ukunamathela phakathi komgca wangaphakathi kunye nesidumbu kunye nokuphucula ukuqina kwevili.


Iinkcukacha zeMveliso

Iithegi zeMveliso

Iimpawu zeMveliso

Irabha ye-butyl yi-polymer ene-isobutylene njengomzimba oyintloko kunye nenani elincinci le-isoprene.Kwitsheyini engundoqo yemolekyuli yerabha yebutyl, lonke elinye iqela le-methylene, kukho amaqela amabini e-methyl acwangciswe ngokwemilo ejikelezayo ejikeleze ikhonkco eliphambili, ebangela isithintelo esikhulu esibambekayo, esenza ukwakheka kwemolekyuli ye-butyl yerabha ehlangeneyo kunye netsheyina lemolekyuli libhetyebhetye ngokufanelekileyo. .Nangona kunjalo, yenza irabha ye-butyl igqwese kukuqina komoya, ibekwe kwindawo yokuqala kuzo zonke iirabha.

Ukongeza kukuqina komoya okugqwesileyo, i-buyl vulcanizates yerabha ikwanayo nokumelana nobushushu.I-Sulfur vulcanized butyl rubber ingasetyenziswa emoyeni ixesha elide kwi-100 ℃ okanye ubushushu obuphantsi kancinane.Ubushushu benkonzo yerabha ye-butyl etshiswe ngentlaka inokufikelela kwi-150-200 ℃.Ukuguga kwe-oksijini eshushu yerabha ye-butyl yeyohlobo lokuthotywa, kwaye ukuguga kudla ngokuthamba.Ngenxa yokungahlambuluki okuphantsi kwetsheyini ye-molecular yerabha ye-butyl kunye ne-inert chemical reaction, i-rubber ye-butyl inobushushu obuhle kunye nokumelana nokuguga kwe-oksijini.

Imo yorhwebo: Irabha ye-butyl ye-brominated yimveliso yethu yearhente.Owona myalelo ubuncinci ziitoni ezingama-20.

Irabha yeBrominated Butyl (BIIR) (3)
Irabha yeBrominated Butyl (BIIR) (2)

Isicelo

1. Ukusetyenziswa kwivili lemoto kunye netayara lemoto yamandla:
Irabha ye-butyl inokumelana nobushushu kunye nokumelana nokukrazuka.Iityhubhu zangaphakathi (kubandakanywa nezithuthuthu kunye neebhayisekile) ezenziwe ngerabha ye-butyl zisenako ukugcina amandla afanelekileyo kunye nokukrazula emva kokuvezwa kwexesha elide kwindawo eshushu, enciphisa umngcipheko wokuqhuma ngexesha lokusetyenziswa.Umbhobho wangaphakathi we-rubber ye-butyl usenokuqinisekisa ubomi obuninzi betayara kunye nokhuseleko phantsi kweemeko eziphezulu zokushisa okanye phantsi kweemeko ezivuthayo.Ukukrazula okuncinci kunokunciphisa ubungakanani bomngxuma kwaye kwenze ukulungiswa kombhobho wangaphakathi werabha ye-butyl kube lula kwaye kube lula.Ukuxhathisa okugqwesileyo kwe-oxidation kunye nokumelana ne-ozone yerabha ye-butyl yenza ityhubhu yerabha ye-butyl ibe nokuxhathisa okugqwesileyo kokuthotywa, kwaye ukuqina kwayo kunye nobomi benkonzo bungcono kunetyhubhu yerabha yendalo yangaphakathi.Umoya ophantsi kakhulu wokungena umoya werabha ye-butyl yenza ukuba ityhubhu engaphakathi eyenziwe ngayo igcinwe kuxinzelelo oluchanekileyo lokunyuka kwamaxabiso ixesha elide.Lo msebenzi uyingqayizivele wenza ukuba ityhubhu yangaphandle yetayara inxibe ngokulinganayo kwaye iqinisekisa ubomi obungcono besithsaba.Ukwandisa ubomi benkonzo yetayara langaphandle, ukwandisa uzinzo kunye nokhuseleko lokuqhuba, ukunciphisa ukuxhathisa ukuqengqeleka, kwaye emva koko unciphise ukusetyenziswa kwamafutha ukufezekisa injongo yokonga amandla.

2. Ukusetyenziswa kwisithinteli seebhotile zonyango:
Isithinteli sebhotile yezonyango yimveliso ekhethekileyo yerabha yokutywinwa kunye nokupakishwa edibana ngqo namachiza.Ukusebenza kwayo kunye nomgangatho wayo kuchaphazela ngokuthe ngqo ukusebenza, ukhuseleko, ukuzinza komgangatho kunye nokulula kwamachiza.Izikhonkwane zonyango zihlala zicolwa phantsi kobushushu obuphezulu kunye neemeko zoxinzelelo oluphezulu okanye kwiintsholongwane ezahlukeneyo, kwaye ngamanye amaxesha kufuneka zigcinwe ixesha elide phantsi kweemeko zobushushu obuphantsi.Ngoko ke, kukho iimfuno eziqinileyo kwiimpawu zeekhemikhali, iipropathi ze-mechanical mechanical kunye ne-biological properties of the rubber.Kuba isithinteli sebhotile sinxibelelana ngokuthe ngqo nechiza, sinokungcolisa ichiza ngenxa yokusasazwa kwento ekhutshwayo kwisithinteli sebhotile ukuya kwichiza, okanye ukunciphisa ukusebenza kwechiza ngenxa yokufunxwa kwamanye amacandelo echiza. ngesivalo sebhotile.Irabha ye-butyl ayinakukwazi ukungena kuphela, kodwa inokumelana ne-oxidation ebalaseleyo, ukuxhathisa kwe-asidi kunye ne-alkali, ukumelana nobushushu kunye nokumelana nomonakalo weekhemikhali.Emva kokuba kusetyenziswe isivalo sebhotile yerabha ye-butyl, umzi-mveliso woxubo-mayeza unokwenza lula inkqubo yokupakisha, usebenzise ikepusi ye-aluminium evulekileyo, uphelise iwax yokutywina kunye nokunciphisa iindleko, kwaye unokuququzelela ukusetyenziswa kwesitofu.

3. Ezinye izicelo:
Ukongeza kolu setyenziso lungentla, irabha ye-butyl inolu setyenziso lulandelayo: (1) ulwelo lwezixhobo zemichiza.Ngenxa yokumelana nokugqwesa kweekhemikhali, irabha ye-butyl iye yaba yeyona nto ithandwayo yolwaleko oluxhathisayo lwezixhobo zekhemikhali.Ukuvuvukala kwevolumu yerabha ye-butyl kwii-solvents ezahlukeneyo ziphantsi kakhulu, esinye sezizathu ezibalulekileyo zokuba i-rubber ye-butyl isetyenziswe kule ntsimi.(2) Impahla ekhuselayo kunye nezinto ezikhuselayo.Nangona izinto ezininzi zeplastiki zinomsebenzi olungileyo wokuzimela kunye nokukhusela, kuphela izixhobo ezinwebekayo ezinokunika ingqalelo ekuguquguqukeni okuyimfuneko ekungeneni okuphantsi kunye nempahla ekhululekile.Ngenxa yokungena kwayo kancinci kulwelo kunye neegesi, irabha yebutyl isetyenziswa kakhulu kwimpahla ekhuselayo, iiponcho, izigqubuthelo zokhuselo, iimaski zegesi, iiglavu, izihlangu zerabha kunye neebhutsi.

Ukulungiselela

Kukho iindlela ezimbini eziphambili zokuvelisa irabha ye-butyl eqhelekileyo: indlela yodaka kunye nesisombululo.Indlela ye-slurry ibonakaliswe ngokusebenzisa i-chloromethane njenge-diluent kunye ne-alcl3 yamanzi njengomqalisi.Kubushushu obuphantsi be-100 ℃, isobutylene kunye nenani elincinci le-isoprene lingena kwi-cationic copolymerization.Inkqubo ye-polymerization idinga ukusetyenziswa kwee-catalysts.Ukuze kuphuculwe ukusebenza kakuhle kwee-catalysts, kuyimfuneko ukusebenzisa i-cocatalysts ukuqalisa i-polymerization kwiimeko ezininzi.Itekhnoloji yemveliso ilawulwa ziinkampani zangaphandle zaseMelika kunye neenkampani zaseJamani.Inkqubo yokuvelisa irabha ye-butyl ngendlela ye-slurry ikakhulu ibandakanya amanyathelo amane: i-polymerization, ukulungiswa kwemveliso, ukuhlaziya kunye nokucoca i-kettle.Indlela yesisombululo yaphuhliswa yinkampani yaseRussia ye-taoriati yerabha eyenziwe kunye nenkampani yase-Itali.Uphawu lobuchwephesha kukuba i-alkyl aluminiyam chloride kunye namanzi isetyenziswa njenge-initiator kwi-copolymerize isobutene kunye nenani elincinci le-isoprene kwi-solvent ye-hydrocarbon (njenge-isopentane) kwiqondo lobushushu lika-90 ukuya ku-70 ℃.Inkqubo ephambili yokuveliswa kwerabha ye-butyl ngendlela yesisombululo ibandakanya ukulungiswa, ukupholisa, i-polymerization ye-initiator system kunye nezithako ezixubileyo, ukuxuba isisombululo serabha, ukuchithwa kunye nokuhluthwa, ukubuyiswa kunye nokucocwa kwe-solvent kunye ne-monomer engaphendulwanga, emva kokunyanga irabha, njl. iinkqubo ezingundoqo ezincedisayo ziquka ifriji, ukucocwa kwe-reactor, ukulungiswa okongeziweyo, njl.


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