1. Irabha yemvelo
Irabha yemvelo kulula kakhulu ukuyithola njengepulasitiki. Irabha ejwayelekile ye-maleic ene-viscosity engapheli kanye ne-viscosity ephansi ine-viscosity yokuqala ephansi futhi ngokuvamile ayidingi ukufakwa ipulasitiki. Uma i-viscosity ye-Mooney yezinye izinhlobo zezinamathiseli ezijwayelekile idlula ama-60, kusadingeka ibunjwe. Uma usebenzisa i-mixer yangaphakathi yokubumba, isikhathi singaba cishe imizuzu emi-3-5 lapho izinga lokushisa lifinyelela ngaphezu kwama-120 ℃. Uma ufaka ama-plasticizer noma ama-plasticizer, kunganciphisa kakhulu isikhathi sokwenza ipulasitiki futhi kuthuthukise umphumela wokwenza ipulasitiki.
2. I-Styrene-butadiene
Ngokuvamile, i-viscosity ye-Mooney ye-Styrene-butadiene iphakathi kuka-35-60. Ngakho-ke, i-Styrene-butadiene ayidingi i-plasticization. Kodwa empeleni, ngemva kwe-plasticization, ukuhlakazeka kwe-compound agent kungathuthukiswa, okusiza ukuthuthukisa ikhwalithi yomkhiqizo. Ikakhulukazi emikhiqizweni yerabha yesiponji, i-Styrene-butadiene kulula ukuyipholisha ngemva kokufaka i-plasticization, futhi usayizi webhamuza uyafana.
3. I-Polybutadiene
I-Polybutadiene inesimo sokugeleza okubandayo futhi akulula ukuthuthukisa umphumela wokwenza ipulasitiki. Njengamanje, i-Mooney viscosity ye-Polybutadiene esetshenziswa kakhulu ilawulwe ngobubanzi obufanele ngesikhathi sokwenziwa i-polymer, ngakho-ke ingaxutshwa ngqo ngaphandle kokwenziwa ipulasitiki.
4. I-Neoprene
I-Neoprene ngokuvamile ayidingi ukwenziwa ipulasitiki, kodwa ngenxa yokuqina kwayo okuphezulu, iyasiza ekusebenzeni. Izinga lokushisa elincane ngokuvamile lingu-30 ℃ -40 ℃, okulula ukunamathela kulo uma liphezulu kakhulu.
5. Irabha ye-ethylene propylene
Ngenxa yesakhiwo esigcwele seketanga eliyinhloko lerabha le-Ethylene propylene, kunzima ukubangela ukuqhekeka kwama-molecule ngokufakelwa ipulasitiki. Ngakho-ke, kuyalulekwa ukuthi kuhlanganiswe ukuze kube ne-Mooney viscosity efanele ngaphandle kwesidingo sokubumba.
6. Irabha ye-butyl
Irabha ye-butyl inesakhiwo samakhemikhali esizinzile nesithambile, isisindo esincane sama-molecule kanye nokugeleza okukhulu, ngakho-ke umphumela wokwenza ipulasitiki ibe ngowomshini awumuhle kakhulu. Irabha ye-butyl ene-viscosity ephansi ye-Mooney ingaxutshwa ngqo ngaphandle kokwenza ipulasitiki ibe yi-plastic.
7. Irabha ye-Nitrile
Irabha ye-Nitrile inobuthi obuncane, ukuqina okuphezulu kanye nokukhiqizwa okukhulu kokushisa ngesikhathi sokufakwa kwepulasitiki. Ngakho-ke, izinga lokushisa eliphansi, umthamo ophansi kanye nokufakwa kwepulasitiki okuhlukaniswe ngezigaba kuvame ukusetshenziswa emshinini ovulekile ukuze kutholakale imiphumela emihle. Irabha ye-Nitrile akufanele ifakwe ipulasitiki ku-mixer yangaphakathi. Njengoba irabha ye-Nitrile ethambile inobuthi obuthile, ingaxutshwa ngqo ngaphandle kokuhluzwa kwepulasitiki.
Isikhathi sokuthunyelwe: Agasti-03-2023
