Polyisobutylene (PIB)yinto engenambala, engenancasa, engeyiyo ityhefu etyebileyo okanye eqinileyo, ukuxhathisa ubushushu, ukumelana neoksijini, ukuxhathisa kwe-ozone, ukumelana nemozulu, ukuxhathisa kwi-ultraviolet, ukuxhathisa kweasidi kunye nealkali kunye nezinye iikhemikhali ukusebenza kakuhle.I-Polyisobutylene yi-isobutylene homopolymer engenambala, engenavumba, engenatyhefu.Ngenxa yeendlela ezahlukeneyo zokulungiselela kunye neemeko zobuchwepheshe, i-molecular Chemicalbook isixa se-polyisobutylene siyahluka kuluhlu olubanzi.Uninzi lwe-molecular weight yemveliso ifikelela ngaphezu kwe-10,000 ukuya kwi-200,000 iya kuguqulwa ukusuka kulwelo olungqindilili ukuya kwi-semi-solid, kwaye emva koko iguqulelwe kwi-elastomer efana nerabha.I-Polyisobutylene iyamelana ne-asidi, i-alkali, ityuwa, amanzi, i-ozone kunye nokuguga, kwaye inokuqina okugqwesileyo komoya kunye nokufakelwa kombane.
Iimpawu zemichiza:ulwelo olungenambala ukuya kolutyheli olukhanyayo okanye irabha elastiki semisolid (ubunzima bemolekyuli obuphantsi buthambileyo begelatinous, ubunzima obuphezulu bemolekyuli yi-ductile kunye nelastiki).Zonke ivumba elingenavumba, elingenavumba okanye elinuka kancinci.Umyinge wobunzima bemolekyuli yi-200,000 ~ 87 yezigidi.I-Soluble kwi-benzene kunye ne-diisobutyl Chemicalbook, inokuxutywa kunye ne-polyvinyl acetate, i-wax, njl., enganyibiliki emanzini, utywala kunye nezinye izinyibilikisi ze-polar.Inokwenza iswekile yentlaka ibe nokuthamba okugqwesileyo kubushushu obuphantsi, kwaye ineplastiki ethile kwiqondo lobushushu eliphezulu ukwenza ukusilela kwe-polyvinyl acetate xa kubanda, imozulu eshushu kunye nokuthamba okugqithisileyo xa idibana nobushushu bomlomo.
Usetyenziso:I-PIB yaziwa ngokutywina kwayo okugqwesileyo kunye neempawu zokuncamathelisa, ezihlala zisetyenziswa kwizinto zokuncamathelisa, iingubo, kunye nezitywini.Iipropathi ezinjengerabha ze-PIB zenza ukuba kube lukhetho oluhle kakhulu lokutywinwa kunye nokudibanisa izicelo, njengoko inceda ukubonelela ngebhondi eyomeleleyo kunye neyomeleleyo kwiisetingi ezininzi.Ukongeza kusetyenziso lwayo olusebenzayo, i-PIB iqhele ukusetyenziswa kwizinto zokuthambisa kunye nezinto zokhathalelo lomntu ngenxa yeempawu zayo ezintle zokunyibilika.I-substance isoloko idityaniswa kunye nezinye izithako ukwenza iimveliso ezinokwakheka kunye nokuziva.
I-PIB inoluhlu olubanzi lwezicelo kwishishini lokutya ngokunjalo.I-substance idla ngokusetyenziswa njenge-thickener, stabilizer, kunye ne-emulsifier ekutyeni okucutshungulweyo.I-PIB inokunceda ekuphuculeni ukuthungwa kunye nokuhambelana kweemveliso ezifana ne-ayisikrimu, itshungama, kunye neempahla ezibhakiweyo.Ukuguquguquka kwe-PIB kwenza ukuba ibe sisithako esibalulekileyo kubavelisi kwishishini lokutya.
I-PIB isetyenziswa ngokubanzi kwishishini lezonyango.Iipropati ze-non-toxic zento zenza ukuba zilungele ukusetyenziswa kwizicelo zonyango.I-substance isoloko isetyenziswa njenge-stabilizer kwizitofu zokugonya, kunye nesithako kumayeza amaninzi.Indalo ye-hydrophobic ye-PIB inceda ukuba ibambelele eluswini, iyenze ibe luncedo ekuveliseni izinto zokuncamathelisa zonyango.
Iimpawu:I-Polyisobutylene ineempawu zeekhemikhali ze-saturated hydrocarbon compounds, kunye neqela le-methyl chain chain liqinisiwe ukusabalalisa okulinganayo, okuyi-polymer eyodwa.Imeko yokudibanisa kunye neepropati ze-polyisobutylene zixhomekeke kubunzima be-molecular kunye nokusabalalisa ubunzima be-molecular.Xa i-viscosity i-avareji ye-molecular weight ikuluhlu lwe-70000 ~ 90000, i-polyisobutylene iguqula ukusuka kulwelo olujikayo ukuya kwi-elastic solid.Ngokuqhelekileyo, ngokobukhulu be-molecular weight ye-polyisobutylene yahlulwe ngolu hlobo lulandelayo: i-polyisobutylene ephantsi ye-molecular weight (inani eliqhelekileyo le-molecular weight = 200-10000);I-polyisobutylene ye-molecular weight medium (inani eliphakathi kobunzima bemolekyuli = 20000-45,000);I-molecular weight polyisobutylene ephezulu (inani eliphakathi kobunzima bemolekyuli = 75,000-600,000);I-Ultra high molecular weight polyisobutylene (inani le-avareji yobunzima bemolekyuli enkulu kune-760000).
1. Ukuxinana komoya
Enye yeempawu ezibalaseleyo zepolyisobutylene kukuqina kwayo komoya okugqwesileyo.Ngenxa yobukho bamaqela amabini afakwe endaweni ye-methyl, intshukumo yetsheyina yemolekyuli iyacotha kwaye umthamo wasimahla uncinci.Oku kubangela i-coefficient ephantsi yokusabalalisa kunye nokungena kwegesi.
2. Ukunyibilika
I-Polyisobutylene iyanyibilika kwi-aliphatic hydrocarbon, i-hydrocarbon enevumba elimnandi, i-petroli, i-naphthene, i-oyile yamaminerali, i-hydrocarbon e-chlorinated kunye ne-carbon monosulfide.Inxalenye echithwe kwi-alcohols ephezulu kunye neentshizi, okanye i-alcohols, i-ethers, i-monomers, i-ketones kunye nezinye i-solvents kunye ne-oyile yezilwanyana kunye nemifuno, iqondo lokuvuvukala landa ngokunyuka kwe-solvent carbon chain chain;I-insoluble kwii-alcohols ezisezantsi (ezifana ne-methanol, i-ethanol, i-isopropyl alcohol, i-ethylene glycol kunye ne-coethylene glycol), ii-ketones (ezifana ne-acetone, i-methyl ethyl ketone) kunye ne-glacial acetic acid.
3. Ukumelana neekhemikhali
I-Polyisobutylene iyamelana ne-asidi kunye ne-alkali.Ezinje nge ammonia, hydrochloric acid, 60% hydrofluoric acid, lead acetate aqueous solution, 85% phosphoric acid, 40% sodium hydroxide, amanzi anetyuwa ehluthekileyo, 800} sulfuric acid, 38% sulfuric acid +14% ukhukuliseko lwenitric acid, nangona kunjalo, ayinakuxhathisa ukhukuliseko lwee-oxidants ezinamandla, ii-oxidants ezishushu ezibuthathaka (ezifana ne-60% ye-potassium permanganate), ezinye i-acids eziphilayo ezigxininisiweyo ezishushu (ezifana ne-373K acetic acid) kunye ne-halogens (i-fluorine, i-chlorine, intlango).
Ukupakisha: 180KG igubu
Ugcino: Gcina kwindawo epholileyo, engena umoya, kwindawo eyomileyo enokhuseleko elangeni ngexesha lokuhamba.
Ukuqukumbela, i-PIB yinto exabisekileyo enobuninzi bezicelo kumashishini ahlukeneyo.Ukutywinwa kwayo okugqwesileyo kunye neempawu zokuncamathelisa, kunye nokunyibilika kwayo kunye nokuguquguquka kwayo, kuyenza ilungele ukusetyenziswa ngaphakathi kwezithambiso, ukhathalelo lomntu, ukutya, kunye namashishini ezonyango.Njengomboneleli okhokelayo we-PIB, sizinikele ekunikeni abathengi bethu ezona mveliso zikumgangatho ophezulu kunye neenkonzo ukuhlangabezana neemfuno zabo zeshishini.
Ixesha lokuposa: Jun-19-2023