Polyisobutylene CAS 9003-27-4
Polyisobutylene (PIB, CAS 9003-27-4) yog ib qho polymer linear uas tau los ntawm cationic polymerization ntawm isobutylene monomer. Nws tsis muaj tshuaj lom, tsis muaj ntxhiab, ruaj khov heev, airtight heev, rwb thaiv tsev zoo, thiab nws cov duab hloov pauv los ntawm cov kua nplaum → semi-khoom → roj hmab elastomer thaum qhov hnyav molecular nce ntxiv.
Tsis tshua muaj zog tiv taus kev laus thiab kev ruaj khov tshuaj lom neeg
Tag nrho cov saw hlau saturation: tiv taus cua sov, oxygen, ozone, ultraviolet rays, acids, alkalis thiab ntsev, tsis degrade lossis brittle rau lub sijhawm ntev
Kev ruaj khov thermal: siv tau ntev ntawm -50 ℃ txog 150 ℃, nrog lub teeb ci siab thiab tsis kub hnyiab
Kev ua pa tau zoo + kev rwb thaiv tsev zoo + kev nkag tau tsawg
Muaj zog heev rau huab cua: cov khoom tiv thaiv zoo heev tiv thaiv dej, roj thiab pa, zoo dua li roj hmab ib txwm muaj
Kev rwb thaiv hluav taws xob zoo: siab ntim resistivity, qis dielectric poob, tsim rau cables / hluav taws xob sealing
Muaj kev nyab xeeb thiab tsis muaj tshuaj lom + kev sib raug zoo dav dav
FDA qib zaub mov: tsis muaj tshuaj lom, tsis khaus, siv tau rau hauv cov khoom qab zib, tshuaj pleev ib ce, tshuaj ntxiv.
Sib xyaw nrog cov hydrocarbons / roj hmab / resin: yooj yim sib xyaw thiab hloov kho, txhim kho viscosity, yooj ywm thiab tiv taus huab cua.
| Khoom | Tus Qauv |
| Qhov tsos | Cov kua ntshiab, kua nplaum |
| Xim, APHA | 40 |
| Lub ntiajteb txawj nqus tshwj xeeb @ 15.6 Deg C | 0.88-0.89 |
| Viscosity @ 100 Deg C, cSt | 200-260 |
| Flash point (COC), Deg C (Min) | 190 |
| Mw (Tus lej nruab nrab) | 900-1000 |
| Tus Nqi Neutralization (Max), mg ntawm KOH / g | 0.02 |
| Cov ntsiab lus dej (Max), ppm | 40 |
PIB uas muaj qhov hnyav molecular qis (Mw < 10,000, kua nplaum)
Cov roj nplua nyeem / cov roj ntxiv: ua kom tuab, tiv thaiv kev gelling, tiv thaiv kev hnav, kaw thiab tiv thaiv kev xau
Cov nplaum / cov khoom foob: cov nplaum uas rhiab siab, roj hmab butyl hloov kho, cov khoom foob tsis pub dej nkag, cov khoom foob qhov rai tsheb
Cov tshuaj pleev ib ce / cov khoom siv zoo nkauj: lipstick / lip balm (ua kom noo noo yam tsis muaj roj), cream (xauv cov dej noo thiab tsim ib zaj duab xis), hloov squalane
Khoom noj: cov roj hmab zom khoom qab zib (txhim kho kev zom khoom, tiv thaiv cov hniav kom tsis txhob lo)
2) Qhov hnyav molecular nruab nrab PIB (Mw 10,000 - 100,000, semi-khoom / roj hmab mos)
Kev hloov kho roj hmab: acrylonitrile / chloroprene roj hmab plasticizer, txhim kho roj tsis kam thiab cua nruj
Cov cables / xov hlau: rwb thaiv tsev impregnation, lub hnab tiv dej, txheej tiv taus huab cua
Cov txheej txheej / asphalt: txheej txheej tiv thaiv xeb, kev hloov kho asphalt (tiv thaiv kev tawg, tiv thaiv kev laus)
3) PIB hnyav molecular siab (Mw > 100,000, elastomer zoo li roj hmab)
Cov roj hmab tshwj xeeb: lub log tsheb sab hauv uas muaj cua nruj heev, cov khoom siv nqus tsev, cov gasket tiv thaiv kev laus
Kev hloov kho yas: PP / PE txhawb nqa, txhim kho kev cuam tshuam thiab kev tiv thaiv huab cua
• Cov Khoom Txheem: 25 kg/hnab; 25 kg/nruas
• MOQ: yuav tsum tau lees paub los ntawm qib thiab qhov chaw mus
• Lub Sijhawm Ua Ntej: yuav tsum tau lees paub los ntawm qhov ntau thiab tsawg ntawm kev txiav txim thiab lub sijhawm tsim khoom
• Kev xa khoom: kev xaiv hiav txwv / cua / kev xa khoom sai muaj
• Khaws cia rau qhov chaw txias, qhuav, thiab muaj cua nkag tau zoo.
• Khaws lub thawv kom kaw ruaj thiab tiv thaiv kom tsis txhob muaj dej noo.
• Tsis txhob cia tshav ntuj ncaj qha, cua sov, thiab nplaim taws qhib.
• Ua raws li cov lus qhia ntawm SDS rau cov khoom siv uas tsis sib xws.
