Polyisobutylene (PIB)ke ntho e se nang 'mala, e sa latsoeheng, e se nang chefo e teteaneng kapa e sa tieang, ho hanyetsa mocheso, ho hanyetsa oksijene, ho hanyetsa ozone, ho hanyetsa boemo ba leholimo, ho hanyetsa mahlaseli a kotsi, ho hanyetsa asiti le alkali le lik'hemik'hale tse ling tse sebetsang hantle.Polyisobutylene ke isobutylene homopolymer e se nang 'mala, e sa nkheng, e seng chefo.Ka lebaka la mekhoa e fapaneng ea ho itokisa le maemo a thekenoloji, molek'hule ea Chemicalbook palo ea polyisobutylene e fapana ka mefuta e mengata.Boholo ba boima ba limolek'hule ba sehlahisoa bo fihla ho feta 10,000 ho 200,000 bo tla fetoloa ho tloha mokelikeli o teteaneng ho ea ho semi-solid, ebe o fetela ho elastomer e kang rabara.Polyisobutylene e hanyetsana le asiti, alkali, letsoai, metsi, ozone le botsofali, 'me e na le ho tiea ha moea ho babatsehang le ho kenya motlakase.
Lintho tsa lik'hemik'hale:mokelikeli o se nang 'mala ho isa ho o mosehla o bobebe oa viscous kapa elastic rubbery semisolid (boima bo tlase ba molek'hule ke gelatinous e bonolo, boima bo phahameng ba molek'hule ke ductile le elastic).Monko oohle o sa nkheng, o sa nkheng kapa o monko hanyenyane.Ka karolelano boima ba limolek'hule ke 200,000 ~ 87 milione.E qhibiliha ka har'a benzene le diisobutyl Chemicalbook, e ka kopanngoa le polyvinyl acetate, boka, joalo-joalo, e sa qhibiliheng metsing, joala le lihlapolli tse ling tsa polar.E ka etsa hore tsoekere ea marenene e be bonolo haholo mochesong o tlase, 'me e na le polasetiki e itseng mochesong o phahameng ho etsa mefokolo ea polyvinyl acetate ha ho bata, ho chesa le ho nolofala ho feteletseng ha e kopana le mocheso oa molomo.
Lisebelisoa:PIB e tsejoa ka thepa ea eona e babatsehang ea ho tiisa le ea ho khomarela, e atisang ho sebelisoa ho khomarela, ho koahela le ho tiisa.Lintho tse kang rabara tsa PIB li etsa hore e be khetho e babatsehang bakeng sa ho tiisa le ho kopanya likopo, kaha e thusa ho fana ka tlamo e matla le e tšoarellang maemong a mangata.Ntle le ts'ebeliso ea eona e sebetsang, PIB e atisa ho sebelisoa litlolong le linthong tsa tlhokomelo ea motho ka lebaka la thepa ea eona e ntle ea ho qhibiliha.Hangata ntho e kopantsoe le lisebelisoa tse ling ho etsa lihlahisoa tse nang le sebopeho se ikhethang le maikutlo.
PIB e na le mefuta e mengata ea lits'ebetso le indastering ea lijo.Sehlahisoa sena hangata se sebelisoa e le setenya, se tsitsitseng, le emulsifier lijong tse phehiloeng.PIB e ka boela ea thusa ho ntlafatsa sebopeho le ho tsitsa ha lihlahisoa tse kang ice cream, chewing gum, le lintho tse besitsoeng.Ho feto-fetoha ha maemo ha PIB ho etsa hore e be motsoako oa bohlokoa ho baetsi ba indasteri ea lijo.
PIB e boetse e sebelisoa haholo indastering ea bongaka.Lintho tse se nang chefo tsa ntho ena li etsa hore e be e loketseng ho sebelisoa lits'ebetsong tsa bongaka.Hangata ntho ena e sebelisoa e le stabilizer ho liente, hammoho le motsoako oa meriana e mengata.PIB ea tlhaho ea hydrophobic e e thusa ho khomarela letlalo, e etsa hore e be molemo tlhahisong ea li-adhesives tsa bongaka.
Litšobotsi:Polyisobutylene e na le thepa ea lik'hemik'hale ea lik'hemik'hale tsa hydrocarbon tse tletseng, 'me sehlopha sa ketane ea mahlakoreng ea methyl e tiile ka mokhoa o ts'oanang, e leng polima e ikhethang.Boemo ba ho kopanya le thepa ea polyisobutylene e itšetlehile ka boima ba eona ba molek'hule le kabo ea boima ba limolek'hule.Ha boima ba limolek'hule ba viscosity bo le boholo ba 70000 ~ 90000, polyisobutylene e fetoha ho tloha mokelikeli o fetohang ho ea ho o tiileng.Ka kakaretso, ho ea ka boholo ba boima ba limolek'hule tsa polyisobutylene e arotsoe ka lihlopha tse latelang: polyisobutylene e tlaase ea boima ba limolek'hule (palo e tloaelehileng ea boima ba molek'hule = 200-10000);Boima ba limolek'hule bo bohareng ba polyisobutylene (palo e tloaelehileng ea boima ba molek'hule = 20000-45,000);Boima bo phahameng ba limolek'hule polyisobutylene (palo e tloaelehileng ea boima ba molek'hule = 75,000-600,000);Ultra high molecular weight polyisobutylene (palo ea karolelano ea boima ba molek'hule e kholo ho feta 760000).
1. Ho tiea ha moea
E 'ngoe ea litšoaneleho tse hlahelletseng tsa polyisobutylene ke ho tiea ha eona hantle ha moea.Ka lebaka la boteng ba lihlopha tse peli tsa methyl tse nkeloang sebaka, motsamao oa ketane ea limolek'hule o lieha mme molumo oa mahala o nyane.Sena se fella ka coefficient e tlase ea phallo le ho kenella ha khase.
2. Sollubility
Polyisobutylene e qhibiliha ka har'a aliphatic hydrocarbon, hydrocarbon e nkhang hamonate, peterole, naphthene, oli ea diminerale, hydrocarbon ea chlorinated le carbon monosulfide.E qhibilihisoa ka mokhoa o itseng ka joala bo phahameng le li-cheeses, kapa ho ruruha ka joala, li-ethers, monomers, ketone le li-solvents tse ling le oli ea liphoofolo le ea meroho, tekanyo ea ho ruruha e eketseha ka keketseho ea bolelele ba ketane ea carbon;Ha e qhibilihe ka har'a lino tse tahang (tse kang methanol, ethanol, joala ea isopropyl, ethylene glycol le coethylene glycol), li-ketone (tse kang acetone, methyl ethyl ketone) le glacial acetic acid.
3. Ho hanyetsa lik'hemik'hale
Polyisobutylene e hanyetsana le asiti le alkali.Tse kang ammonia, hydrochloric acid, 60% hydrofluoric acid, lead acetate aqueous solution, 85% phosphoric acid, 40% sodium hydroxide, saturated salt water, 800} sulfuric acid, 38% sulfuric acid +14% nitric acid e khoholeho ea mobu, Leha ho le joalo, ha e khone ho hanela khoholeho ea li-oxidants tse matla, li-oxidants tse fokolang tse chesang (joalo ka 60% potassium permanganate), li-acids tse ling tse chesang (tse kang 373K acetic acid) le halogens (fluorine, chlorine, lehoatata).
Ho paka: 180KG moropa
Polokelo: Boloka sebakeng se pholileng, se nang le moea o pholileng, se omileng se nang le tšireletso ea letsatsi nakong ea lipalangoang.
Qetellong, PIB ke ntho ea bohlokoa e nang le lits'ebetso tse ngata liindastering tse fapaneng.Mehaho ea eona e babatsehang ea ho tiisa le ho khomarela, hammoho le ho qhibiliha ha eona le ho feto-fetoha ha maemo, e etsa hore e be e loketseng bakeng sa lisebelisoa tsa litlolo, tlhokomelo ea botho, lijo le indasteri ea bongaka.Joaloka barekisi ba ka sehloohong ba PIB, re ikemiselitse ho fa bareki ba rona lihlahisoa le lits'ebeletso tsa boleng bo holimo ho fihlela litlhoko tsa indasteri ea bona.
Nako ea poso: Jun-19-2023