Cov txheej txheem ntau lawm ntawm polyethylene nplooj ntawv tsuas yog suav nrog cov hauv qab no:
Txoj kev siab siab: Cov qauv no nqa cov polymerization nyob rau hauv cov kub thiab kev kub siab, feem ntau yog siv lub siab ntawm 160-300 degrees. Siv oxygen lossis organic peroxide ua qhov pib, ethylene monomer indergent-dawb tej yam kev mob. Txoj kev siv siab-siab yog qhov tsim nyog rau kev tsim cov roj av qis polyethylene, thiab cov khoom muaj kev cuam tshuam tsis zoo thiab tawv.
Cov qauv nruab nrab-siab: Cov qauv no nqa cov polymerization nyob rau hauv qis dua siab, feem ntau yog siv lub siab ntawm {mpa thiab kub ntau tshaj 100 degrees. Siv cov hlau oxides ua catalysts, cov tshuaj tiv thaiv yog nqa tawm hauv qab qhuav thiab airless tej yam kev mob. Cov qauv nruab nrab-siab yog qhov tsim nyog rau kev tsim cov polyethylene nrog cov siab txheeb ze molecular.
Txoj kev muaj zog qis: Cov qauv no nqa cov polymerization nyob rau hauv ib txwm muaj siab lossis me ntsis pressurized tej yam kev mob, thiab qhov kub {1}} degrees. Siv titanium tetrachloride thiab trietylaluminium ua catalysts, cov tshuaj tiv thaiv polymerization yog nqa tawm hauv anhydrous alkane cov kuab tshuaj. Cov qauv qis-siab yog qhov tsim nyog rau kev tsim cov high-ntom polyethylene, thiab cov khoom muaj cov khoom siab siab thiab qhov ntsuas kub tsawg.
Hluav taws xob polymerization: Cov tshuaj no ua rau cov tshuaj tiv thaiv Polymerization hauv Y-eens ntawm MPa thiab kub ntawm {1}} degrees. Li qub aliphatic hydrocarbons lossis cycloalkanes yog siv los ua ethanal monomers, thiab catalyst yog alkane dispersion ntawm titanium tetranhloride. Kev siv cov hluav taws xob polymerization yog qhov tsim nyog rau kev tsim cov khoom polyethylene nrog cov khoom tshwj xeeb.