Polyisobutylene (PIB)chinhu chisina ruvara, chisingarapike, chisiri chepfu gobvu kana semi-solid, kupisa kupisa, oxygen resistance, ozone resistance, weather resistance, ultraviolet resistance, acid uye alkali resistance uye mamwe makemikari anoita zvakanaka.Polyisobutylene haina ruvara, isina kunhuwa, isiri-chepfu isobutylene homopolymer.Nekuda kwemaitiro akasiyana ekugadzirira uye tekinoroji mamiriro, iyo molecular Chemicalbook huwandu hwe polyisobutylene inosiyana mune yakakura.Mazhinji ehuremu hwechigadzirwa hunosvika kupfuura zviuru gumi kusvika 200,000 huchashandurwa kubva kumvura gobvu kuenda kune semi-yakasimba, uyezve shanduko kune rabha-yakafanana elastomer.Polyisobutylene inoshingirira kune acid, alkali, munyu, mvura, ozone uye kuchembera, uye ine yakanakisa kusimba kwemhepo uye kuvharirwa kwemagetsi.
Chemical properties:isina ruvara kusvika kuchiedza yero viscous fluid kana elastic rubbery semisolid (yakaderera molecular uremu yakapfava gelatinous, yakakwira molecular uremu ndeye ductile uye elastic).Yese isinganhuwidzi, isinganhuhwi kana kunhuwa zvishoma.Avhareji yema molecular uremu i200,000 ~ 87 miriyoni.Soluble mubenzene uye diisobutyl Chemicalbook, inogona kusanganiswa ne polyvinyl acetate, wakisi, nezvimwewo, isinganyunguriki mumvura, doro uye zvimwe zvinonyungudutsa polar.Inogona kuita kuti shuga yegumu ive nekupfava kwakanyanya pakudziya kwakadzika, uye iine humwe purasitiki pakupisa kwakanyanya kugadzirisa kukanganisa kwepolyvinyl acetate kana kuchitonhora, kupisa kwekunze uye kupfava kwakanyanya kana ikasangana nekupisa kwemuromo.
Applications:PIB inozivikanwa nekunamira kwayo chisimbiso uye inonamira zvivakwa, izvo zvinowanzo shandiswa mukunamira, machira, uye sealants.PIB's rubber-senge zvivakwa zvinoita kuti ive sarudzo yakanaka yekuisa chisimbiso uye yekubatanidza maapplication, sezvo ichibatsira kupa yakasimba uye yakasimba chisungo muzvirongwa zvakawanda.Pamusoro pekushandisa kwayo kunoshanda, PIB inowanzo shandiswa muzvizora uye zvinhu zvekuchengeta munhu nekuda kwekunakisa kunyungudika zvinhu.Chinhu chinowanzo kusanganiswa nezvimwe zvinongedzo kugadzira zvigadzirwa zvine chimiro chakasiyana uye kunzwa.
PIB ine huwandu hwakasiyana hwekushandisa muindasitiri yechikafu zvakare.Mushonga uyu unowanzoshandiswa semukobvu, unyoro, uye emulsifier muchikafu chakagadzikiswa.PIB inogona zvakare kubatsira kuvandudza magadzirirwo uye kuenderana kwezvigadzirwa zvakaita se ice cream, chewing gum, uye zvakabikwa.Iko kuita kwakasiyana-siyana kwePIB kunoita kuti ive chinhu chakakosha kune vanogadzira muindasitiri yechikafu.
PIB inoshandiswawo zvakanyanya muindasitiri yezvokurapa.Iyo isiri-chepfu zvinhu zvinoita kuti ive yakakodzera kushandiswa mune zvekurapa.Mushonga wacho unowanzoshandiswa sechigadziro mumishonga, pamwe chete nemishonga mumishonga yakawanda.PIB's hydrophobic hunhu inoibatsira kuti inamire paganda, ichiita kuti ive yakakosha mukugadzirwa kweanonamira ekurapa.
Hunhu:Polyisobutylene ine kemikari zvimiro zveakazara hydrocarbon makomisheni, uye iyo yepadivi cheni methyl boka rakasimba symmetrical kugovera, inova yakasarudzika polima.Iyo aggregation mamiriro uye zvimiro zve polyisobutylene zvinoenderana nehuremu hwayo hwemamorekuru uye huremu hwekugovera.Kana iyo viscosity avhareji uremu hwemamorekuru huri muhupamhi hwe70000 ~ 90000, polyisobutylene inoshanduka kubva painotenderera mvura kuenda kune elastic solid.Kazhinji, zvichienderana nehukuru hwehuremu hwepolyisobutylene yakakamurwa kuita zvinotevera: low molecular weight polyisobutylene (nhamba yepakati molecular weight =200-10000);Medium molecular uremu polyisobutylene (nhamba avhareji molecular uremu = 20000-45,000);High molecular uremu polyisobutylene (nhamba avhareji molecular uremu = 75,000-600,000);Ultra yakakwira molecular uremu polyisobutylene (nhamba yeavhareji uremu hwemamorekuru kupfuura 760000).
1. Air tightness
Imwe yeakanakisa maitiro e polyisobutylene ndeye yakanakisa mhepo tightness.Nekuda kwekuvapo kwemaviri akatsiviwa methyl mapoka, iyo molecular chain movement inononoka uye iyo yemahara vhoriyamu idiki.Izvi zvinoguma nekushomeka kwakadzikira coefficient uye gasi permeability.
2. Solubility
Polyisobutylene inonyungudika mualiphatic hydrocarbon, anonhuwirira hydrocarbon, peturu, naphthene, mineral oil, chlorinated hydrocarbon uye carbon monosulfide.Zvikamu zvakanyungudutswa mumadoro akakwirira uye cheeses, kana kuvhuvhuta mudoro, ethers, monomers, ketoni uye zvimwe zvinonyungudutsa nemafuta emhuka nemiriwo, chiyero chekuzvimba chinowedzera nekuwedzera kwekureba kwe carbon chain chain;Isinganyunguriki muzvinwiwa zvakaderera (zvakadai semethanol, ethanol, isopropyl doro, ethylene glycol uye coethylene glycol), ketoni (zvakadai seacetone, methyl ethyl ketone) uye glacial acetic acid.
3. Chemical resistance
Polyisobutylene inopesana neasidhi uye alkali.Zvakadai seammonia, 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 erosion, zvisinei, haigoni kupikisa kukukurwa kwemaoxidants akasimba, maoxidants anopisa asina simba (akadai se60% potassium permanganate), mamwe anopisa akaiswa organic acids (senge 373K acetic acid) uye halogens (fluorine, chlorine, gwenga).
Kutakura: 180KG chigubhu
Kuchengeta: Chengetedza munzvimbo inotonhorera, ine mhepo, nzvimbo yakaoma ine dziviriro yezuva panguva yekufambisa.
Mukupedzisa, PIB chinhu chakakosha chine huwandu hwekushandisa mumaindasitiri akasiyana.Yakanakisa yekuisa chisimbiso uye inonamira zvivakwa, pamwe nekunyungudika kwayo uye kuita zvakasiyana-siyana, inoita kuti ive yakanakira zvikumbiro mukati mezvizoro, kutarisirwa kwevanhu, chikafu, uye maindasitiri ekurapa.Semutengesi anotungamira wePIB, takazvipira kupa vatengi vedu zvigadzirwa zvemhando yepamusoro uye masevhisi kusangana nezvinodiwa zveindasitiri yavo.
Nguva yekutumira: Jun-19-2023