Polyisobutylene (PIB)chinhu chisina ruvara, chisina kuravira, chisina chepfu, chakakora kana kuti chakaoma zvishoma, chinodzivisa kupisa, chinodzivisa okisijeni, chinodzivisa ozone, chinodzivisa mamiriro ekunze, chinodzivisa ultraviolet, chinodzivisa acid nealkali nemamwe makemikari anoshanda zvakanaka. Polyisobutylene ihomopolymer yeisobutylene isina ruvara, isina hwema, isina chepfu. Nekuda kwenzira dzakasiyana dzekugadzirira nemamiriro etekinoroji, huwandu hwemolecular Chemicalbook yepolyisobutylene hunosiyana-siyana. Huremu hwakawanda hwemolecular hwechigadzirwa hunosvika kupfuura 10,000 kusvika 200,000 huchashandurwa kubva mumvura yakakora kuita semi-solid, uye hwozochinjwa kuita rabha-like elastomer. Polyisobutylene inodzivirira acid, alkali, munyu, mvura, ozone uye kukwegura, uye ine air tightness yakanaka uye insulation yemagetsi.
Hunhu hwemakemikari:Mvura isina ruvara kusvika yero yakajeka, ine viscous kana rabha inonamira, semisolid (huremu hwakaderera hwemamorekuru hwakapfava, huremu hwakakwira hwemamorekuru hwakapfava uye hunopfava). Hwese husina hwema, husina hwema kana hwema hushoma. Avhareji yehuremu hwemamorekuru i200,000 ~ 87 miriyoni. Inonyungudika mubenzene nediisobutyl Chemicalbook, inogona kusanganiswa nepolyvinyl acetate, wax, nezvimwewo, isinganyungudike mumvura, doro nezvimwe zvinonyungudutsa. Inogona kuita kuti shuga yegum ive yakapfava zvakanaka patembiricha yakaderera, uye ine plasticity yakati patembiricha yepamusoro yekutsiva zvikanganiso zvepolyvinyl acetate kana kuchitonhora, kuchipisa uye kunyorova kwakanyanya kana yasangana netembiricha yemuromo.
Mashandisirwo:PIB inozivikanwa nehunyanzvi hwayo hwekusunga uye kunamira, izvo zvinowanzoshandiswa mumaglues, coatings, uye sealants. Hunhu hwePIB hwakaita serabha hunoita kuti ive sarudzo yakanaka yekushandiswa mumaglues ne bonding, sezvo ichibatsira kupa bonding yakasimba uye inogara kwenguva refu munzvimbo dzakasiyana-siyana. Pamusoro pekushandiswa kwayo, PIB inowanzo shandiswa muzvizoro uye zvinhu zvekuchengetedza munhu nekuda kwehunhu hwayo hwekunyungudika. Chinhu ichi chinowanzo sanganiswa nezvimwe zvinoshandiswa kugadzira zvigadzirwa zvine magadzirirwo akasiyana uye kunzwa.
PIB ine mashandisirwo akasiyana-siyana muindasitiri yechikafu zvakare. Chinhu ichi chinowanzoshandiswa sechinosimbisa, chinosimbisa, uye chinosanganisa chikafu muzvikafu zvakagadzirwa. PIB inogonawo kubatsira kuvandudza magadzirirwo uye kugadzikana kwezvigadzirwa zvakaita se ice cream, chewing gum, uye zvinhu zvakabikwa. Kugona kushandiswa kwePIB kunoita kuti ive chinhu chakakosha kune vagadziri veindasitiri yechikafu.
PIB inoshandiswawo zvakanyanya muindasitiri yezvekurapa. Hunhu hwechinhu ichi husina chepfu hunoita kuti chive chakakodzera kushandiswa mukurapa. Chinhu ichi chinowanzo shandiswa sechinosimbisa muviri mumajekiseni, pamwe chete sechinhu chinoshandiswa mumishonga yakawanda. Hunhu hwePIB hwekusapindira mumvura hunobatsira kuti inamire paganda, zvichiita kuti ibatsire mukugadzira manamatiro ekurapa.
Hunhu:Polyisobutylene ine hunhu hwemakemikari hwemahydrocarbon akazara, uye boka re methyl re side chain rakanyatsoenderana, iro riri polymer rakasiyana. Mamiriro ekuunganidza uye hunhu hwepolyisobutylene zvinoenderana nehuremu hwayo hwemamorekuru uye kugoverwa kwehuremu hwemamorekuru. Kana avhareji yehuremu hwemamorekuru iri pakati pe70000 ~ 90000, polyisobutylene inoshanduka kubva pakuchinja kuita elastic solid. Kazhinji, zvichienderana nehukuru hwehuremu hwemamorekuru hwepolyisobutylene yakakamurwa kuita zvinotevera: huremu hwemamorekuru hwakaderera polyisobutylene (avhareji yehuremu hwemamorekuru = 200-10000); huremu hwepakati hwemamorekuru polyisobutylene (avhareji yehuremu hwemamorekuru = 20000-45,000); huremu hwemamorekuru hwakakwira polyisobutylene (avhareji yehuremu hwemamorekuru = 75,000-600,000); huremu hwemamorekuru hwakakwira zvakanyanya polyisobutylene (huwandu hwehuremu hwemamorekuru hwakakura kupfuura 760000).
1. Kubata mhepo
Chimwe chezvinhu zvinoshamisa zvepolyisobutylene ndiko kusimba kwayo kwemhepo. Nekuda kwekuvapo kwemapoka maviri emethyl akatsiviwa, kufamba kwecheni yemamorekuru kunononoka uye huwandu hwakasununguka hushoma. Izvi zvinoguma nekuwanda kwemhepo uye kubvumidzwa kwegasi.
2. Kunyungudika
Polyisobutylene inonyungudika mu aliphatic hydrocarbon, aromatic hydrocarbon, peturu, naphthene, mineral oil, chlorinated hydrocarbon uye carbon monosulfide. Kana yakanyungudika zvishoma mu alcohols ne cheeses dzakakwirira, kana kuti yakazvimba mu alcohols, ethers, monomers, ketones nezvimwe zvinonyungudika uye mafuta emhuka nemiriwo, mwero wekuzvimba unowedzera nekuwedzera kwehurefu hwe solvent carbon chain; Hainyungudike mu alcohols dzakaderera (dzakadai se methanol, ethanol, isopropyl alcohol, ethylene glycol uye coethylene glycol), ketones (dzakadai se acetone, methyl ethyl ketone) uye glacial acetic acid.
3. Kusagona kushandisa makemikari
Polyisobutylene inodzivirira acid nealkali. 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, haigone kudzivirira erosion ye strong oxidants, hot weak oxidants (senge 60% potassium permanganate), mamwe hot concentrated organic acids (senge 373K acetic acid) uye halogens (fluorine, chlorine, renje).
Kurongedza: 180KG dhiramu
Kuchengetera: Chengeta munzvimbo inotonhorera, ine mhepo inofefetera, yakaoma uye inodzivirira zuva panguva yekufambisa.
Mukupedzisa, PIB chinhu chinokosha chine mashandisirwo akawanda mumaindasitiri akasiyana-siyana. Hunhu hwayo hwakanaka hwekusunga nekunamira, pamwe nekunyunguduka kwayo uye kushandiswa kwayo kwakasiyana-siyana, zvinoita kuti ive yakakodzera kushandiswa mumaindasitiri ekuzora, ekuchengetedza munhu, ezvekudya, uye ezvekurapa. Sevatengesi vanotungamira vePIB, takazvipira kupa vatengi vedu zvigadzirwa nemasevhisi emhando yepamusoro kuti zvigutse zvavanoda muindasitiri.
Nguva yekutumira: Chikumi-19-2023