Kev txhawb nqa cov yas tiv tshav kub (PE-RT) cov kav dej hauv kuv lub tebchaws qhia tias ntau tus neeg tsis nkag siab tob txog cov khoom no. Yog li, nws yog qhov yuav tsum tau qhia ntxiv thiab txheeb xyuas lub tswv yim, yam ntxwv thiab kev paub txog lwm yam ntawm cov khoom no.
Lub tswvyim ntawm polyethylene-tiv tshav kub (PE-RT)
Cov khoom siv tshwj xeeb rau cov tshuaj tiv thaiv tshav kub-tiv taus polyethylene (PE-RT) cov yeeb nkab tau xub xub qhia los ntawm Dow Chemical Company ntawm Tebchaws Meskas thaum Lub Peb Hlis 2002, raws li lub npe DOWLE9X2344E9LLDPE. Cov khoom siv raw no yog qhov nruab nrab ntom ntom polyethylene nrog cov khoom ruaj khov, uas yog tsim los ntawm copolymerization ntawm ethylene monomer thiab octene monomer. Cov khoom siv raw muaj kev tiv thaiv tshav kub zoo thiab ua haujlwm ntev hydrostatic.
Thaum PE-RT cov khoom siv nyob rau hauv kev ntxhov siab nyob rau hauv qhov kub thiab txias siab, C8 cov lwg me me nqus tau ib feem ntawm lub zog thaum lub sijhawm txheej txheem, uas tuaj yeem tiv thaiv cov ntoo ntoo los ntawm kev puas. Los ntawm kev tsim nyog tsim nyog, C8 monomer tuaj yeem faib ua tus kheej sab hauv cov polymer molecule, yog li cov polymer sib xyaw ua ke nyuaj siab, thiab los ntawm kev tswj hwm nws ntau, nws cov thermal stability thiab kev ua haujlwm ntev hydrostatic tuaj yeem txhim kho.
Nyob rau theem pib ntawm PE-RT cov khoom tsim kho, Dow Chemical Company thawj zaug tsim DOW2344E yeeb nkab tshwj xeeb cov khoom, thiab tom qab ntawd tsim DOW2388 yeeb nkab tshwj xeeb cov khoom. Ntawm lawv, qhov ua tau zoo ntawm 2388 yeeb nkab cov khoom siv tshwj xeeb zoo dua li ntawm 2344E cov yeeb nkab tshwj xeeb cov khoom. Vim yog kev nthuav dav txuas ntxiv ntawm PE-RT yeeb nkab kev lag luam, ntau lub tuam txhab roj av hauv ntiaj teb tseem tau tsim lawv tus kheej cov qib tshwj xeeb ntawm PE-RT yeeb nkab cov ntaub ntawv, xws li YUCLAIRDX800 PE-RT yeeb nkab tshwj xeeb cov khoom tsim los ntawm SK Tshuaj Tuam Txhab, thiab LG Chemical Company tau tsim Cov khoom siv tshwj xeeb rau cov kav dej SP980, cov khoom siv tshwj xeeb rau 4731B kav dej tsim los ntawm Basell, thiab cov khoom siv tshwj xeeb rau XP9000 kav dej tsim los ntawm Kaus Lim Dalin Tuam Txhab.
Nrog rau kev nce qib ntawm cov thev naus laus zis polymerization, cov khoom siv tam sim no PE-RT tau tsim los ntawm kev sib koom ua ke ntawm ethylene thiab octene mus rau kev sib xyaw copolymerization ntawm ethylene thiab hexene, ethylene thiab butene, yog li nthuav cov kav dej tsim khoom Xaiv qhov chaw.
Nrog rau daim ntawv thov loj ntawm cov cua kub hauv pem teb qis qis cua sov (& "; cua sov hauv pem teb &";) cov tshuab, cov cua sov hauv tsev cov yeeb nkab tsim khoom tau nce lawv cov peev txheej hauv cov cua sov hauv pem teb. Tam sim no, cov kav dej siv feem ntau hauv cov cua sov hauv pem teb suav nrog PE-X kav dej, PE-RT kav, PB kav dej, thiab lwm yam Vim tias PE-RT yeeb nkab muaj qhov zoo ntawm kev kho tau zoo, tsim kho tau yooj yim, rov ua dua tshiab, tiv thaiv ib puag ncig zoo, thiab tus nqi qis, nws tau txhim kho sai heev nyob rau xyoo tas los no.
