Polyethylene siv quav ciab yog ib hom uas tsis tshua muaj molecular phaus polyethylene ciab
① Ib qho yog ethylene monomer polymerized ciab sawv cev los ntawm Honeywell, BASF, Clariant, thiab lwm yam, feem ntau hu ua polymerized ciab
Polymer siv quav ciab thiab copolymer ciab.
Ib qho yog siv cov txheej txheem pyrolysis txhawm rau txhawm rau molecular saw ntawm polyethylene cob los tsim tsawg molecular phaus polyethylene ciab
Lawv yog qhov ntom ntom polyethylene ntes cov quav ciab thiab siab ntom ntom polyethylene ntes siv quav ciab. Tsis tas li ntawd, muaj polypropylene cracking siv quav ciab ntawm kev ua lag luam. Nyob rau tam sim no, tsis muaj lub Hoobkas tsim cov tshuaj ethylene polymerization ciab nyob hauv Suav teb, feem ntau yog ntes cov quav ciab, sawv cev los ntawm Fengshun Dongli thiab Hengshui Yimei hauv Suav teb, thiab Poland, Thaib thiab Kaus Lim Qab Teb Kauslim hauv txawv teb chaws.
③ Ib qho yog cov by-product ua nyob rau hauv cov txheej txheem ntau lawm ntawm high-density polyethylene. Tom qab yooj yim deoiling, nws tau ua rau hauv qhov hnyav tsawg cov nyhav polyethylene siv quav ciab, tseem hu ua oligomer ciab. Nws yog tus cwj pwm los ntawm cov khoom siv loj hauv lub cev molecular phaus faib, cov pob qij txha ruaj khov tsis zoo (tsis pom zoo kom siv rau hauv stabilizers), thiab qee qhov muaj qee qhov me me ntawm cov nyhav molecular phaus polyethylene cob. Cov lag luam tsuas yog nyob hauv Middle East, Thaib, South Kauslim thiab mala Nyob rau sab hnub poob Asia thiab Uzbekistan.
