Polyisobutylene CAS 9003-27-4
Ko te Polyisobutylene (PIB, CAS 9003-27-4) he pūmua raina kua kōkōtia i whiwhi mā te whakapūmuatanga cationic o te monomer isobutylene. Kāore he paitini, kāore he kakara, he tino pumau, he tino ātete ki te hau, he tino ārai i te hau, ā, ka rerekē tōna āhua mai i te wai matotoru → haurua-totoka → elastomer rapa i te pikinga o te taumaha ngota.
He tino ātete ki te koroheketanga me te pumau matū
Te mātotorutanga o te mekameka katoa: ātete ki te wera, te hāora, te ozone, ngā hihi ultraviolet, ngā waikawa, ngā kawakore me ngā tote, kāore e pirau, e pakarukaru rānei mō te wā roa
Te pumau o te wera: ka taea te whakamahi mō te wā roa i te -50℃ ki te 150℃, he nui te pūwāhi mura me te iti o te mura
He ātete hau teitei + he ārai teitei + he iti te uruhanga
Tino kaha te ātete hau: he pai rawa ngā āhuatanga ārai ki te wai, te hau me te mamaoa, he pai rawa atu i te rapa noa
He pai te ārai hiko: he nui te ātete rōrahi, he iti te ngaronga hiko, he pai mō ngā taura/hiri hiko
Haumaru, kore-paitini + hototahi whānui
Tohu kai FDA: kore-paitini, kore-whakariri, ka taea te whakamahi i roto i te kapia ngaungau, te whakapaipai, ngā mea tāpiri rongoā
Ka taea te whakaranu ki ngā hauwaiwai/rapa/kāpia: he ngāwari ki te whakaranu me te whakarerekē, ka whakapai ake i te matotoru, te ngāwari me te ātete ki te huarere.
| Taonga | Paerewa |
| Āhua | Wai mārama, wai mātotoru |
| Tae, APHA | 40 |
| Taumaha Motuhake @15.6 Deg C | 0.88-0.89 |
| Te matotoru@100 Deg C, cSt | 200-260 |
| Pūwāhi mura (COC), Deg C (Min) | 190 |
| Mw (Toharite tau) | 900-1000 |
| Uara Whakakore (Max), mg o KOH/g | 0.02 |
| Te Ihirangi Wai (Max),ppm | 40 |
PIB taumaha ngota iti (Mw < 10,000, wai matotoru)
Ngā hinu whakahinuhinu/tāpiri wahie: whakamātotoru, ārai-whakapiripiri, ārai-kākahu, hiri me te ārai turuturu
Ngā piripiri / ngā hiri: piripiri tairongo-pēhanga, rapa butyl kua whakarerekētia, hiri ā-wai, hiri matapihi waka
Ngā mea whakapaipai / hua ataahua: rīpene ngutu / hinu ngutu (whakamakuku me te kore e hinuhinu), kirīmi (e mau ana te makuku me te hanga i te kiriata), whakakapi mō te squalane
Kai: te turanga kapia ngaungau (hei whakapai ake i te ngaungau, hei ārai i te piri o te niho)
2) Taumaha ngota waenga PIB (Mw 10,000 - 100,000, rapa āhua-totoka / ngohengohe)
Whakarerekētanga rapa: te kirihou rapa acrylonitrile / chloroprene, e whakarei ake ana i te ātete hinu me te ātete hau
Ngā taura / waea: whakakī whakamahana, hipoki ātete wai, paninga ātete huarere
Paninga / uku: paninga ārai-waikura, whakarerekētanga uku (ārai-pakaru, ārai-pakeketanga)
3) PIB taumaha ngota teitei (Mw > 100,000, elastomer rite ki te rapa)
Rapa motuhake: potae o roto e ārai ana i te hau, wāhanga hiri korehau, gasket ārai-pakeketanga
Te whakarerekētanga kirihou: Te whakapakari PP/PE, te whakarei ake i te ātete pānga me te ātete huarere
• Tākai Paerewa: 25 kg/pēke; 25 kg/pahu
• MOQ: kia whakaūtia e te taumata me te ūnga
• Wā Arataki: me whakaū e te rahinga ota me te rārangi whakaputa
• Tukunga: kei te wātea ngā kōwhiringa kaipuke / rangi / tere
• Penapena ki te wāhi hauhautanga, maroke, ā, he pai te hauhautanga.
• Puritia kia katia te ipu kia piri, kia tiakina hoki mai i te makuku.
• Āraia te hihi tika o te rā, te wera, me te mura ahi.
• Whāia ngā aratohu SDS mō ngā rauemi kāore e hototahi.
