I-Polyisobutylene (PIB)iyinto engenambala, ayinambitheki, ayinobuthi obukhulu noma obungaqinile, ukumelana nokushisa, ukumelana komoya-mpilo, ukumelana ne-ozone, ukumelana nesimo sezulu, ukumelana ne-ultraviolet, ukumelana ne-asidi ne-alkali namanye amakhemikhali ukusebenza kahle.I-Polyisobutylene iyi-isobutylene homopolymer engenambala, engenaphunga, engenabuthi.Ngenxa yezindlela ezihlukene zokulungiselela kanye nezimo zobuchwepheshe, inani le-molecular Chemicalbook le-polyisobutylene liyahlukahluka ebangeni elibanzi.Iningi lesisindo samangqamuzana omkhiqizo lifinyelela ngaphezu kuka-10,000 kuya ku-200,000 lizoguqulwa lisuke oketshezini oluwugqinsi liye ku-semi-solid, bese lishintshela ku-elastomer efana nerabha.I-Polyisobutylene imelana ne-asidi, i-alkali, usawoti, amanzi, i-ozone nokuguga, futhi inokuqina komoya okuhle kakhulu kanye nokufakwa kukagesi.
Izakhiwo zamakhemikhali:i-viscous liquid engenambala ukuya kokuphuzi ngokukhanyayo noma i-elastic rubbery semisolid (isisindo samangqamuzana aphansi sithambile i-gelatinous, isisindo samangqamuzana aphezulu siyi-ductile nokunwebeka).Zonke iphunga elingenaphunga, elingenaphunga noma elinephunga elincane.Isilinganiso sesisindo samangqamuzana singama-200,000 ~ 87 million.I-Soluble ku-benzene kanye ne-diisobutyl Chemicalbook, ingaxubana ne-polyvinyl acetate, i-wax, njll., engancibiliki emanzini, etshwaleni nakwezinye izincibilikisi ze-polar.Ingenza ushukela we-gum ube nokuthambile okuhle kakhulu ekushiseni okuphansi, futhi ube ne-plasticity ethile ekushiseni okuphezulu ukuze kulungiswe ukushiyeka kwe-polyvinyl acetate uma kubanda, isimo sezulu esishisayo kanye nokuthambisa ngokweqile lapho uhlangabezana nezinga lokushisa lomlomo.
Izicelo:I-PIB yaziwa ngezici zayo ezinhle kakhulu zokuvala nokunamathisela, ezivame ukusetshenziselwa izinto zokunamathisela, okokuhlanganisa, nezinsimbi.Izakhiwo ezifana nerabha ze-PIB ziyenza ibe ukukhetha okuhle kakhulu kokuvala nokubopha izinhlelo zokusebenza, njengoba isiza ukuhlinzeka ngebhondi eqinile nehlala isikhathi eside kuzilungiselelo eziningi.Ngokungeziwe ekusebenziseni kwayo okungokoqobo, i-PIB ivamise ukusetshenziswa kuzimonyo nasezintweni zokunakekela umuntu ngenxa yezakhiwo zayo ezinhle kakhulu zokuncibilika.Into evame ukuhlanganiswa nezinye izithako ukuze kwakhiwe imikhiqizo enokwakheka nomuzwa oyingqayizivele.
I-PIB inezinhlobonhlobo zezicelo embonini yokudla futhi.Into ejwayele ukusetshenziswa njenge-thickener, stabilizer, kanye ne-emulsifier ekudleni okugayiwe.I-PIB ingasiza futhi ukuthuthukisa ukuthungwa nokuvumelana kwemikhiqizo efana no-ayisikhilimu, ushingamu, nezinto ezibhakiwe.Ukuguquguquka kwe-PIB kuyenza ibe isithako esibalulekile kubakhiqizi embonini yokudla.
I-PIB isetshenziswa kabanzi embonini yezokwelapha.Izakhiwo zale nto ezingenabuthi ziyenza ifaneleke ukusetshenziswa ezinhlelweni zezokwelapha.Umuthi uvame ukusetshenziswa njengesiqinisi emithini yokugoma, kanye nesithako emithini eminingi.Imvelo ye-PIB ye-hydrophobic iyayisiza ukuthi ibambelele esikhunjeni, iyenze ibe wusizo ekukhiqizeni izinto ezinamathelayo zezokwelapha.
Izici:I-Polyisobutylene inezici zamakhemikhali ze-saturated hydrocarbon compounds, futhi iqembu le-methyl eliseceleni liwukusabalalisa okuqinile okulinganayo, okuyi-polymer eyingqayizivele.Isimo sokuhlanganisa kanye nezakhiwo ze-polisobutylene zincike esisindweni sayo samangqamuzana nokusatshalaliswa kwesisindo samangqamuzana.Uma i-viscosity isilinganiso sesisindo sengqamuzana siku-70000~90000, i-polisobutylene iyashintsha isuka oketshezini oluphendukayo iye kokuqinile nokunwebeka.Ngokuvamile, ngokusho kobukhulu besisindo samangqamuzana e-polyisobutylene ihlukaniswe ngochungechunge olulandelayo: i-polyisobutylene ephansi ye-molecular weight (inombolo yesisindo se-molecular = 200-10000);I-polyisobutylene yesisindo esimaphakathi (inombolo yesisindo se-molecular = 20000-45,000);I-polyisobutylene enesisindo esiphezulu (inombolo yesisindo se-molecular = 75,000-600,000);I-Ultra high molecular weight polyisobutylene (inani lesilinganiso sesisindo samangqamuzana esikhulu kuno-760000).
1. Ukucinana komoya
Esinye sezici ezivelele ze-polisobutylene ukuqina kwayo komoya okuhle kakhulu.Ngenxa yokuba khona kwamaqembu amabili e-methyl ashintshiwe, ukunyakaza kwe-molecular chain kuhamba kancane futhi ivolumu yamahhala incane.Lokhu kubangela i-coefficient ephansi yokusabalalisa kanye nokungena kwegesi.
2. Ukuncibilika
I-Polyisobutylene iyancibilika ku-aliphatic hydrocarbon, i-hydrocarbon enamakha, uphethiloli, i-naphthene, uwoyela wamaminerali, i-hydrocarbon eyi-chlorinated kanye ne-carbon monosulfide.Incibilike kancane kuma-alcohols noshizi aphakeme, noma avuvukele ku-alcohols, ama-ethers, ama-monomers, ama-ketones nezinye izincibilikisi kanye namafutha ezilwane nemifino, izinga lokuvuvukala liyakhula ngokwanda kobude be-solvent carbon chain;Ayincibiliki otshwaleni obuphansi (okufana ne-methanol, i-ethanol, i-isopropyl alcohol, i-ethylene glycol ne-coethylene glycol), ama-ketone (afana ne-acetone, i-methyl ethyl ketone) ne-glacial acetic acid.
3. Ukumelana namakhemikhali
I-Polyisobutylene imelana ne-asidi ne-alkali.Okufana ne-ammonia, hydrochloric acid, 60% hydrofluoric acid, lead acetate aqueous solution, 85% phosphoric acid, 40% sodium hydroxide, amanzi anosawoti agcwele, 800} sulfuric acid, 38% sulfuric acid +14% ukuguguleka kwe-nitric acid, Nokho, ayikwazi ukumelana nokuguguleka kwama-oxidants aqinile, ama-oxidants ashisayo abuthakathaka (afana no-60% we-potassium permanganate), amanye ama-asidi e-organic agxilile ashisayo (afana ne-373K acetic acid) nama-halogens (i-fluorine, i-chlorine, ugwadule).
Ukupakisha: 180KG isigubhu
Isitoreji: Gcina endaweni epholile, engenamoya, neyomile enokuvikelwa elangeni ngesikhathi sokuthutha.
Sengiphetha, i-PIB iyinto ebalulekile enenqwaba yezicelo ezimbonini ezahlukahlukene.Izimpawu zayo ezinhle kakhulu zokuvala nokunamathisela, kanye nokuncibilika kwayo nokusebenzisa izinto ezihlukahlukene, kuyenza ilungele ukusetshenziswa ngaphakathi kwezimboni zezimonyo, ukunakekelwa komuntu siqu, ukudla, kanye nezimboni zezokwelapha.Njengomphakeli oholayo we-PIB, sizinikele ekunikezeni amakhasimende ethu imikhiqizo namasevisi ekhwalithi ephezulu ukuze ahlangabezane nezidingo zawo zemboni.
Isikhathi sokuthumela: Jun-19-2023