LDPE (Low-Density Polyethylene) zaj duab xis thiab HDPE (High-Density Polyethylene) zaj duab xis yog ob hom yas zaj duab xis siv ntau yam kev siv, tab sis lawv txawv ntawm lawv cov khoom, kev siv, thiab kev tsim khoom:
Qhov ntom:
LDPE zaj duab xis: LDPE muaj qhov ntom ntom, feem ntau yog li ntawm {{0}}.91 txog 0.925 g/cm³. Qhov qis qis no muab LDPE zaj duab xis hloov tau yooj yim thiab muaj zog, ua rau nws tsim nyog rau cov ntawv thov uas muaj kev sib haum xeeb thiab kev cuam tshuam tseem ceeb.
HDPE zaj duab xis: HDPE muaj qhov ceev dua, feem ntau yog li ntawm {{0}}.94 txog 0.97 g/cm³. Qhov ntom ntom ntau dua ua rau cov yeeb yaj kiab tawv thiab nruj dua piv rau LDPE, muab lub zog zoo dua thiab cov khoom thaiv.
Lub zog thiab Durability:
LDPE zaj duab xis: LDPE tsis tshua muaj zog thiab ruaj khov piv rau HDPE. Nws yog qhov yooj yim dua rau tearing thiab pncturing, tshwj xeeb tshaj yog nyob rau hauv cov ntsuas nyias.
HDPE zaj duab xis: HDPE muaj zog dua thiab tiv taus ntau dua los tsim kua muag thiab punctures. Nws muab kev tiv thaiv zoo dua tiv thaiv cov ntsiab lus sab nraud thiab cov neeg kho tshuab kev ntxhov siab.
Flexibility thiab stretchability:
LDPE zaj duab xis: LDPE hloov tau yooj yim dua thiab muaj elongation ntau dua thaum tawg piv rau HDPE. Nws tuaj yeem ncab yam tsis muaj kua muag, ua rau nws haum rau cov ntawv thov uas xav tau kev ncab.
HDPE zaj duab xis: HDPE tsis hloov pauv thiab muaj qhov elongation qis dua thaum tawg dua li LDPE. Nws zoo li yuav nruj dua thiab qis dua stretchable.
Daim ntawv thov:
LDPE zaj duab xis: Cov ntawv siv feem ntau suav nrog cov hnab yas (piv txwv li, hnab ntim khoom noj, hnab khib nyiab), shrink wrap, ua liaj ua teb films (mulch films, greenhouse films), thiab ntau yam ntim films. LDPE kuj tseem siv rau hauv daim ntawv thov kev kho mob vim nws yooj yim.
HDPE zaj duab xis: HDPE yog siv rau hauv cov ntawv thov kom nruj dua thiab lub zog, xws li cov khoom siv hauv tsev, kev tsim cov yeeb yaj kiab, geomembranes, thiab cov khoom ntim hnyav. Nws kuj tseem siv rau hauv cov khoom ntim khoom noj thiab cov neeg siv khoom siv uas yuav tsum tau ntim khoom ruaj khov thiab tiv taus ya raws.
Kev tsim thiab kev tsim khoom:
LDPE zaj duab xis: LDPE feem ntau yog tsim los siv cov txheej txheem ntawm kev ua haujlwm siab polymerization. Nws yog ib qho yooj yim rau txheej txheem thiab muaj cov khoom zoo yaj, ua rau nws haum rau cov txheej txheem extrusion.
HDPE zaj duab xis: HDPE yog tsim los siv cov txheej txheem ntawm high-pressure polymerization. Nws yuav tsum muaj qhov kub thiab txias dua thaum ua haujlwm piv rau LDPE. HDPE zaj duab xis yog tsim los ntawm cov cua tshuab los yog cov txheej txheem cam khwb cia extrusion.
