Polyisobutylene (PIB)ke ntho e se nang 'mala, e se nang tatso, e se nang chefo e teteaneng kapa e tiileng hanyane, e hanyetsa mocheso, e hanyetsa oksijene, e hanyetsa ozone, e hanyetsa boemo ba leholimo, e hanyetsa ultraviolet, e hanyetsa asiti le alkali le lik'hemik'hale tse ling e sebetsang hantle. Polyisobutylene ke homopolymer ea isobutylene e se nang 'mala, e se nang monko, e se nang chefo. Ka lebaka la mekhoa e fapaneng ea ho lokisa le maemo a theknoloji, palo ea limolek'hule tsa polyisobutylene e fapana ka mefuta e mengata. Bongata ba boima ba limolek'hule ba sehlahisoa bo fihla ho feta 10,000 ho isa ho 200,000 bo tla fetoloa ho tloha mokelikeli o teteaneng ho ea ho se tiileng hanyane, ebe bo fetoloa ho ea ho elastomer e kang rabara. Polyisobutylene e hanyetsa asiti, alkali, letsoai, metsi, ozone le botsofali, 'me e na le moea o tiileng o motle le ho thibela motlakase.
Litšobotsi tsa lik'hemik'hale:Mokelikeli o nang le 'mala o mosehla o bobebe kapa rabara e tenyetsehang e semisolid (boima bo tlase ba limolek'hule bo bonolo, boima bo phahameng ba limolek'hule bo ductile ebile boa tenyetseha). Kaofela ha tsona ha li na monko, ha li na monko kapa monko o mobe hanyane. Boima bo tloaelehileng ba limolek'hule ke 200,000 ~ 87 milione. E qhibiliha ka har'a benzene le diisobutyl Chemicalbook, e ka kopanngoa le polyvinyl acetate, boka, jj., e sa qhibiliheng metsing, joala le li-solvents tse ling tsa polar. E ka etsa hore tsoekere ea gum e be bonolo haholo mochesong o tlase, 'me e na le plasticity e itseng mochesong o phahameng ho lefella mefokolo ea polyvinyl acetate ha ho bata, ho chesa le ho nolofala ho feteletseng ha e kopana le mocheso oa molomo.
Likopo:PIB e tsebahala ka thepa ea eona e ntle ea ho tiisa le ho khomarela, e atisang ho sebelisoa ho likhomaretsi, liphahlo le li-sealant. Thepa ea PIB e kang rabara e etsa hore e be khetho e ntle bakeng sa lits'ebetso tsa ho tiisa le ho kopanya, 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 sebelisoa hangata litlolong le linthong tsa tlhokomelo ea motho ka mong ka lebaka la thepa ea eona e ntle ea ho qhibiliha. Ntho ena hangata e kopantsoe le metsoako e meng ho etsa lihlahisoa tse nang le sebopeho le maikutlo a ikhethang.
PIB e na le mefuta e mengata ea lits'ebetso indastering ea lijo. Ntho ena e sebelisoa hangata e le setefatsi, se tsitsitseng le se kopanyang lijong tse sebetsitsoeng. PIB e ka boela ea thusa ho ntlafatsa sebopeho le botsitso ba lihlahisoa tse kang ice cream, chewing gum le lintho tse besitsoeng. Ho tenyetseha ha PIB ho etsa hore e be motsoako oa bohlokoa bakeng sa bahlahisi indastering ea lijo.
PIB e boetse e sebelisoa haholo indastering ea bongaka. Litšobotsi tsa ntho ena tse se nang chefo li etsa hore e be ntle bakeng sa tšebeliso lits'ebetsong tsa bongaka. Ntho ena hangata e sebelisoa e le setsibitsi lienteng, hammoho le motsoako merianeng e mengata. Tlhaho ea PIB ea ho se rate metsi e e thusa ho khomarela letlalong, e leng se etsang hore e be molemo tlhahisong ea likhomaretsi tsa bongaka.
Litšobotsi:Polyisobutylene e na le thepa ea lik'hemik'hale ea metsoako ea hydrocarbon e tletseng, 'me sehlopha sa methyl sa ketane ea lehlakore se na le kabo e lekanang hantle, e leng polymer e ikhethang. Boemo ba ho bokellana le thepa ea polyisobutylene li itšetlehile ka boima ba eona ba limolek'hule le kabo ea boima ba limolek'hule. Ha viscosity e tloaelehileng ea boima ba limolek'hule e le pakeng tsa 70000 ~ 90000, polyisobutylene e fetoha ho tloha mokelikeling o fetohang ho ea ho solid e tenyetsehang. Ka kakaretso, ho latela boholo ba boima ba limolek'hule tsa polyisobutylene e arotsoe ka letoto le latelang: polyisobutylene e tlase ea boima ba limolek'hule (palo e tloaelehileng ea boima ba limolek'hule = 200-10000); Polyisobutylene e mahareng ea boima ba limolek'hule (palo e tloaelehileng ea boima ba limolek'hule = 20000-45,000); Polyisobutylene e phahameng ea boima ba limolek'hule (palo e tloaelehileng ea boima ba limolek'hule = 75,000-600,000); Polyisobutylene e phahameng haholo ea boima ba limolek'hule (palo ea boima ba limolek'hule bo fetang 760000).
1. Ho tiea ha moea
E 'ngoe ea litšobotsi tse ikhethang tsa polyisobutylene ke ho tiea ha eona moeeng ho hoholo. Ka lebaka la boteng ba lihlopha tse peli tsa methyl tse nketsoeng sebaka, motsamao oa ketane ea limolek'hule o lieha 'me bophahamo bo lokolohileng bo bonyenyane. Sena se fella ka coefficient e tlase ea ho hasana le ho kenella ha khase.
2. Ho qhibiliha ha metsi
Polyisobutylene e qhibiliha ka har'a hydrocarbon ea aliphatic, hydrocarbon e nkhang hamonate, peterole, naphthene, oli ea diminerale, hydrocarbon e nang le chlorine le carbon monosulfide. Ha e qhibiliha ka karolo ho alcohols le chisi tse phahameng, kapa e ruruhile ho alcohols, ethers, monomers, ketones 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 solvent; Ha e qhibilihe ho alcohols tse tlase (tse kang methanol, ethanol, isopropyl alcohol, ethylene glycol le coethylene glycol), ketones (tse kang acetone, methyl ethyl ketone) le glacial acetic acid.
3. Khanyetso ea lik'hemik'hale
Polyisobutylene e hanela asiti le alkali. Tse kang ammonia, asiti ea hydrochloric, asiti ea hydrofluoric ea 60%, tharollo ea metsi ea lead acetate, asiti ea phosphoric ea 85%, 40% sodium hydroxide, metsi a letsoai a saturated, asiti ea sulfuric ea 800}, asiti ea sulfuric ea 38% +14% ea nitric acid e khoholehileng, Leha ho le joalo, e ke ke ea hanela ho khoholeha ha li-oxidant tse matla, li-oxidant tse fokolang tse chesang (tse kang 60% potassium permanganate), li-acid tse ling tse chesang tse nang le organic (tse kang 373K acetic acid) le li-halogen (fluorine, chlorine, lehoatata).
Pakete: 180KG moropa
Polokelo: Boloka sebakeng se pholileng, se nang le moea o kenang, se omileng se sirelelitsoeng ke letsatsi nakong ea lipalangoang.
Qetellong, PIB ke ntho ea bohlokoa e nang le lits'ebetso tse ngata liindastering tse fapaneng. Litšobotsi tsa eona tse ntle tsa ho tiisa le ho khomarela, hammoho le ho qhibiliha ha eona le ho tenyetseha ha eona, li etsa hore e be ntle bakeng sa lits'ebetso liindastering tsa litlolo, tlhokomelo ea botho, lijo le tsa bongaka. Joaloka mofani ea ka sehloohong oa PIB, re inehetse ho fa bareki ba rona lihlahisoa le lits'ebeletso tsa boleng bo holimo ho fihlela litlhoko tsa bona tsa indasteri.
Nako ea poso: Phuptjane-19-2023