Umehluko Phakathi kwe-LLDPE ne-LDPE
Umehluko phakathi kwe-linear low density polyethylene (LLDPE) kanye ne-low density polyethylene (LDPE)
1. Incazelo
I-Linear low density polyethylene (LLDPE) kanye ne-low density polyethylene (LDPE) kokubili kuyizinto zepulasitiki ezithathwe ku-ethylene njengento yokuqala eluhlaza. Nokho, ziyehluka ngokwesakhiwo; I-LLDPE ilungiswa kusetshenziswa ubuchwepheshe be-catalyst eyodwa, okuholela ekwakhekeni komugqa kanye nokuminyana okuphezulu, kanti i-LDPE inokwakheka kweketango okungajwayelekile nokuminyana okuphansi.
2. Izinto ezibonakalayo
I-LLDPE ikhombisa umehluko ohlukile ngokuya kokuminyana nendawo yokuncibilika uma kuqhathaniswa ne-LDPE. Ibanga elijwayelekile lokuminyana le-LLDPE liphakathi kuka-0.916-0.940g/cm3, nebanga lephoyinti lokuncibilika lika-122-128℃. Ukwengeza, i-LLDPE ibonisa amandla aphakeme nezici zokumelana nokushisa.
Ngakolunye uhlangothi, i-LDPE ivamise ukuba nokuminyana okusuka ku-0.910 kuye ku-0.940g/cm3 kanye nebanga lephoyinti elincibilikayo elingu-105-115℃ ngenkathi ihlinzeka ngokuguquguquka okuphezulu nobulukhuni.
3. Izindlela zokucubungula
Ngesikhathi sokukhiqiza, i-LDPE ingacutshungulwa ngokusebenzisa i-blow molding noma amasu okukhipha ukuze kwakhiwe iziqukathi ezihlukahlukene nezinto zokupakisha ezifana namafilimu nezikhwama. Ngokuphambene, ngenxa yomthamo wayo ophakeme wokuthwala umthwalo namandla emishini, i-LLDPE ifaneleka kakhulu kumashubhu namafilimu akhiphayo.
4.Izinkambu zohlelo lokusebenza
Ngenxa yezakhiwo ezihlukile zezakhiwo nezindlela zokucubungula, i-LLDPE ne-LDPE zithola izinhlelo zokusebenza emikhakheni eyahlukene. I-LLDPE ifaneleka kahle ukukhiqiza amafilimu/amashubhu ekhwalithi ephezulu asetshenziswa ekukhiqizeni izinto zokupakisha ezifana nesembozo sezolimo, amafilimu angangeni manzi kanye nezintambo/amakhebuli. Ngakolunye uhlangothi, i-LDPE ithola ukufaneleka okukhulu ekwakhiweni kwemikhiqizo ethambile ehlanganisa ama-plug amapayipi amanzi amathoyizi iziqukathi kanye nezinto zokupakisha.
Sekukonke, Nakuba kokubili i-LLDP kanye ne-LPDE kungokwesigaba samapulasitiki enziwe nge-polyethylene, abonisa umehluko obalulekile hhayi kuphela mayelana nezakhiwo ezibonakalayo, izindlela zokucubungula kodwa nezinkambu zokusetshenziswa.
