Polyisobutylene CAS 9003-27-4
Polyisobutylene (PIB, CAS 9003-27-4) wani sinadari ne mai cikakken layi wanda aka samu ta hanyar polymerization na isobutylene monomer. Ba shi da guba, ba shi da wari, yana da kwanciyar hankali sosai, yana hana iska shiga, kuma siffarsa tana canzawa daga ruwa mai laushi → semi-solid → roba elastomer yayin da nauyin kwayoyin halitta ke ƙaruwa.
Yana da matuƙar juriya ga tsufa da kwanciyar hankali na sinadarai
Cikakken cikar sarkar: yana jure zafi, iskar oxygen, ozone, hasken ultraviolet, acid, alkalis da gishiri, baya lalacewa ko ya zama mai rauni na dogon lokaci
Kwanciyar hankali: Ana iya amfani da shi na dogon lokaci daga -50℃ zuwa 150℃, tare da babban wurin walƙiya da ƙarancin ƙonewa
Babban iska mai ƙarfi + babban rufi + ƙarancin permeability
Ƙarfin iska mai ƙarfi sosai: kyawawan halaye masu kariya daga ruwa, iskar gas da tururi, sun fi roba ta yau da kullun kyau
Kyakkyawan rufin lantarki: juriya mai girma, ƙarancin asarar dielectric, ya dace da kebul/hatimin lantarki
Amintacce kuma mara guba + jituwa mai faɗi
Matsayin abinci na FDA: ba mai guba ba ne, ba mai haushi ba ne, ana iya amfani da shi a cikin cingam, kayan kwalliya, da abubuwan da ke cikin magunguna
Mai iya haɗawa da hydrocarbons/roba/resin: mai sauƙin haɗawa da gyarawa, yana inganta danko, sassauci da juriya ga yanayi.
| Abu | Daidaitacce |
| Bayyanar | Ruwa mai haske, mai kauri |
| Launi, APHA | 40 |
| Nauyin nauyi na musamman @15.6 Deg C | 0.88-0.89 |
| Viscosity@100 Deg C, cSt | 200-260 |
| Wurin walƙiya (COC), Digiri C (min) | 190 |
| Mw (Matsakaicin lamba) | 900-1000 |
| Ƙimar Tsaftacewa (Matsakaicin), MG na KOH/g | 0.02 |
| Ruwan da ke cikinsa (mafi girma), ppm | 40 |
Ƙananan nauyin kwayoyin halitta PIB (Mw < 10,000, ruwa mai laushi)
Man shafawa / ƙarin mai: kauri, hana ƙuraje, hana lalacewa, rufewa da hana zubewa
Manna / manna: manne mai saurin amsawa ga matsin lamba, robar butyl da aka gyara, manna mai hana ruwa shiga, manna tagar mota
Kayan kwalliya / kayan kwalliya: man shafawa / man shafawa na lebe (mai danshi ba tare da mai ba), kirim (yana kulle danshi da kuma samar da fim), maye gurbin squalane
Abinci: tushen tauna (inganta taunawa, hana mannewa da haƙori)
2) Matsakaicin nauyin kwayoyin halitta PIB (Mw 10,000 - 100,000, roba mai laushi / mai laushi)
Gyaran roba: acrylonitrile / chloroprene roba mai filastik, yana ƙara juriya ga mai da kuma matse iska
Kebul / wayoyi: rufin rufi, murfin hana ruwa, rufin da ke jure yanayi
Rufi / kwalta: murfin hana lalata, gyaran kwalta (hana fashewa, hana tsufa)
3) Babban nauyin kwayoyin halitta (PIB) (Mw > 100,000, elastomer mai kama da roba)
Roba ta musamman: taya mai iska mai ƙarfi, ɓangaren rufewa na injin, gasket mai hana tsufa
Gyaran filastik: ƙarfafa PP/PE, haɓaka juriyar tasiri da juriyar yanayi
• Daidaitaccen marufi: 25 kg/jaka; 25 kg/ganga
• MOQ: za a tabbatar da shi ta hanyar daraja da kuma inda za a nufa
• Lokacin Jagoranci: za a tabbatar da shi ta hanyar adadin oda da jadawalin samarwa
• Jigilar kaya: zaɓuɓɓukan teku / iska / gaggawa suna samuwa
• A adana a wuri mai sanyi, bushe, kuma mai iska mai kyau.
• A rufe akwati sosai kuma a kare shi daga danshi.
• A guji hasken rana kai tsaye, zafi, da kuma harshen wuta a buɗe.
• Bi umarnin SDS don kayan da ba su dace ba.
