Polyisobutylene CAS 9003-27-4
Polyisobutylene (PIB, CAS 9003-27-4) ipolymer yakakora inowanikwa kuburikidza ne cationic polymerization ye isobutylene monomer. Haina chepfu, haina hwema, yakasimba, haipindi mhepo zvakanyanya, inochengetedza zvakanyanya, uye chimiro chayo chinoshanduka kubva pamvura ine viscous → semi-solid → rabha elastomer sezvo huremu hwemamorekuru huchiwedzera.
Inodzivirira zvakanyanya kukwegura uye kugadzikana kwemakemikari
Kuzara kwecheni: kunodzivirira kupisa, okisijeni, ozone, ultraviolet mwaranzi, acids, alkalis nemunyu, hakuori kana kupwanyika kwenguva yakareba
Kugadzikana kwekupisa: kunogona kushandiswa kwenguva yakareba pa -50℃ kusvika 150℃, ine flash point yakakwira uye isingatsve zvakanyanya
Kusapinda mhepo kwakanyanya + kudzivirira kupisa kwakanyanya + kudzika kwemvura zvishoma
Kusapinda kwemhepo kwakasimba kwazvo: hunhu hwakanaka hwekudzivirira mvura, gasi neutsi, hwakanyanya kupfuura rabha yakajairika
Kudzivirira kwemagetsi kwakanaka: kusimba kwakanyanya, kurasikirwa kwakaderera kwe dielectric, kwakakodzera tambo/kuvhara magetsi
Kushanda kwakachengeteka uye kusina chepfu + kwakafara
Chikafu cheFDA: chisina chepfu, hachitsamwisi, chinogona kushandiswa mukutafuna chingamu, zvizoro, uye zvinoshandiswa mumishonga
Inosanganiswa nemahydrocarbons/rabha/resin: iri nyore kusanganisa nekugadzirisa, ichivandudza kunaka, kuchinjika uye kuramba mamiriro ekunze.
| Chinhu | Zvakajairika |
| Chitarisiko | Mvura yakajeka, ine viscous |
| Ruvara, APHA | 40 |
| Simba Rakakura Rinosvika 15.6 Deg C | 0.88-0.89 |
| Viscosity@100 Deg C, cSt | 200-260 |
| Poindi yeFlash(COC), Deg C(Min) | 190 |
| Mw (Avhareji yenhamba) | 900-1000 |
| Kukosha kwekusagadzikana (Max), mg yeKOH/g | 0.02 |
| Mvura Yakawanda (Max), ppm | 40 |
PIB ine huremu hwakaderera hwemamorekuru (Mw < 10,000, mvura ine viscous)
Mafuta ekuwedzera / mafuta anowedzera: kukora, kudzivirira kusviba, kudzivirira kupwanyika, kuvhara uye kudzivirira kubuda kwemvura
Zvinonamira/zvinonamira: chinonamira chinonzwa kumanikidzwa, rabha yebutyl yakagadziriswa, chinonamira chisingapindi mvura, chinonamira mahwindo emota
Zvizoro / zvigadzirwa zvekunaka: lipstick / lip balm (inonyorovesa isina mafuta), kirimu (inovhara hunyoro uye inoita firimu), inotsiva squalane
Chikafu: kutsenga chingamu (kuvandudza kutsenga, kudzivirira kunamira kwemazino)
2) Huremu hwepakati hwemamorekuru PIB (Mw 10,000 - 100,000, rabha yakapfava/yakapfava zvishoma)
Kugadziriswa kwerabha: acrylonitrile / chloroprene rabha plasticizer, inowedzera kuramba mafuta uye kusimba kwemhepo
Tambo / waya: kuisirwa kwekudzivirira kupisa, sheya isingapindi mvura, kuputira kunodzivirira mamiriro ekunze
Kuputira / asphalt: kuputira kunodzivirira ngura, kugadziriswa kweasphalt (kudzivirira kutsemuka, kudzivirira kukwegura)
3) Huremu hwakawanda hwemamorekuru PIB (Mw > 100,000, elastomer yakaita serabha)
Rabha yakakosha: vhiri remukati rinovhara mhepo yakawanda, chikamu chekuvhara vacuum, gasket inodzivirira kukwegura
Kugadziriswa kwepurasitiki: Kusimbiswa kwePP/PE, kuwedzera kusimbaradzwa kwesimba uye kusimbaradzwa kwemamiriro ekunze
• Kurongedza Kwakajairika: 25 kg/bhegi; 25 kg/dhiramu
• MOQ: inofanira kusimbiswa negiredhi uye kwainoenda
• Nguva Yekutungamira: inofanira kusimbiswa nehuwandu hweodha uye purogiramu yekugadzira
• Kutumira: sarudzo dzegungwa / dzemhepo / dzekukurumidza dziripo
• Chengeta munzvimbo inotonhorera, yakaoma, uye ine mhepo inofefetera zvakanaka.
• Chengeta bhodhoro rakavharwa zvakanaka uye rakadzivirirwa kubva kuunyoro.
• Dzivisai zuva rakananga, kupisa, uye moto wakavhurika.
• Tevedzera gwara reSDS kana paine zvinhu zvisingaenderane.
