Cia peb xub saib lawv lub hauv paus chiv keeb thiab caj qaum (molecular qauv). LDPE (tsawg-density polyethylene): Zoo li tsob ntoo lush! Nws cov saw molecular muaj ntau ceg ntev, uas ua rau xoob, tsis xwm yeem. Qhov no ua rau qhov qis tshaj qhov ceev (0.91-0.93 g / cm³), qhov softest, thiab hloov tau tshaj plaws. HDPE (high-density polyethylene): Zoo li cov tub rog ua ke! Nws cov saw molecular muaj cov ceg ntoo tsawg heev, uas ua rau muaj cov qauv linear uas nruj nreem ntim thiab ua kom zoo. Qhov no muab qhov ceev tshaj plaws (0.94-0.97 g / cm³), qhov nyuaj tshaj plaws, thiab muaj zog tshaj. LLDPE (linear low-density polyethylene): Ib qho "evolved" version ntawm LDPE! Nws lub nraub qaum yog linear (xws li HDPE), tab sis nrog cov ceg luv luv sib npaug. Nws qhov ceev nyob nruab nrab ntawm ob (0.915-0.925 g / cm³), sib txuas qee qhov hloov pauv nrog lub zog siab dua.
Cov ntsiab lus tseem ceeb ntawm Kev Ua Haujlwm: LDPE: Mos, pob tshab, yooj yim rau kev ua, thiab feem ntau tsis tshua muaj nqi. Txawm li cas los xij, nws raug kev txom nyem los ntawm lub zog tsis zoo, rigidity, thiab kub tsis kam, ua rau nws yooj yim punctured. LLDPE: Qhov nyuaj tshaj plaws! Nws muaj kev cuam tshuam tshwj xeeb, tsim kua muag, thiab puncture tsis kam, kev ua tau zoo ntawm qhov kub thiab txias, thiab kev hloov tau zoo, tab sis yog nruj dua li LDPE. Nws cov pob tshab thiab cov khoom thaiv tsis zoo yog qhov zoo tshaj rau LDPE, tab sis kev ua haujlwm yuav tsum tau ceev faj. HDPE: Qhov nyuaj tshaj plaws! Nws muaj lub zog siab, siab rigidity, tshuaj lom neeg ua haujlwm zoo, ua haujlwm kub zoo, thiab cov khoom thaiv zoo tshaj plaws. Txawm li cas los xij, nws raug kev txom nyem los ntawm kev hloov pauv tsis zoo thiab tsis muaj pob tshab.
Nws siv qhov twg? Nws nyob ntawm daim ntawv thov!
LDPE cov ntawv thov suav nrog: ntau lub hnab ntim khoom siv tau yooj yim (cov hnab ntim khoom noj, hnab khob cij, hnab khaub ncaws), hnab yas (rau tsev neeg thiab qee yam kev lag luam), cov thawv ntim tau yooj yim (xws li nyem lub raj mis ntawm zib ntab thiab ketchup), xaim thiab cable rwb thaiv tsev, sib sib zog nqus txhaj molded qhov chaw (xws li lub kaus mom lub kaus mom thiab cov khoom ua si), thiab coatings (cov thawv ntim mis nyuj).
LLDPE lub zog muaj xws li: cov yeeb yaj kiab ua tau zoo xws li stretch qhwv (yuav tsum muaj rau kev ntim khoom), lub hnab ntim hnyav (rau pub thiab chiv), ua liaj ua teb mulch films (thinner, tougher, thiab ntau ruaj), cov hnab khib nyiab loj (tsis tawg), thiab cov txheej nruab nrab rau cov yeeb yaj kiab sib xyaw. Txhaj molded qhov chaw uas yuav tsum tau muaj zog toughness muaj xws li chim, hau, thiab nyias-walled ntim. Cov yeeb nkab hauv ob sab phlu thiab cable jacketing kuj tseem siv tau.
HDPE lub zog muaj xws li: cov thawv ntim khoom tsis zoo xws li lub raj mis mis, lub fwj tshuaj ntxuav tes, lub raj mis tshuaj, thiab cov thawv tshuaj loj. Cov kav dej thiab fittings suav nrog cov kav dej ( dej txias), cov kav dej roj, thiab cov kav dej ua haujlwm. Hollow cov khoom muaj xws li roj nruas, cov khoom ua si (xws li lub tsev thaiv), thiab tsheb roj tso tsheb hlau luam. Cov khoom siv txhaj tshuaj muaj xws li cov thawv ntim khoom, pallets, lub kaus mom lub raj mis, thiab cov khoom siv txhua hnub (lub tais ntxhua khaub ncaws thiab cov rooj zaum). Zaj duab xis: Lub hnab khw muag khoom (sturdier), cov hnab ntim khoom, thiab hnab T-shirt.
Cov lus qhia xaiv ib kab lus: Nrhiav cov mos mos, pob tshab, thiab pheej yig hnab / zaj duab xis? —————— LDPE. Nrhiav rau ultra-tawv, tsim kua muag-resistant, thiab puncture-resistant zaj duab xis, los yog yuav tsum tau kub-kub toughness? -LLDPE (tshwj xeeb tshaj yog rau ntim hnyav thiab ncab zaj duab xis). Nrhiav nyuaj, muaj zog, tshuaj-resistant fwj / chim / kav dej? - HDPE
Post lub sij hawm: Oct-17-2025