Qhov Sib Txawv Ntawm LDPE Thiab HDPE Yas Hauv Cov Ntawv Siv Hauv Kev Lag Luam
Yas yog ib qho ntawm cov ntaub ntawv siv tau ntau yam thiab siv dav hauv ntau yam kev siv hauv kev lag luam. Ob hom yas uas feem ntau tham txog hauv cov ntsiab lus no yog Low-Density Polyethylene (LDPE) thiab High-Density Polyethylene (HDPE). Ob qho tib si yog cov polymers ntawm ethylene, tab sis lawv muaj qhov sib txawv tseem ceeb hauv cov qauv, cov khoom siv lub cev, thiab kev siv tau. Tsab xov xwm no yuav tham txog qhov sib txawv ntawm LDPE thiab HDPE, tshwj xeeb tshaj yog hauv cov ntsiab lus ntawm kev siv hauv kev lag luam.
Cov Qauv Tshuaj thiab Cov Txheej Txheem Tsim Khoom
LDPE (Low-Density Polyethylene)
LDPE yog ib hom polyethylene uas muaj cov qauv molecular branched heev. Cov txheej txheem tsim LDPE siv txoj kev polymerization dawb radical nyob rau hauv qhov siab siab (1.000-3.000 bar) thiab kub siab (160-300 ° C). Cov qauv branched no muab LDPE ntau qhov chaw ntawm nws cov saw molecular, ua rau muaj qhov ceev tsawg thiab muaj kev ywj pheej ntau dua.
HDPE (High Density Polyethylene)
Nyob rau hauv kev sib piv, HDPE muaj ib tug linear qauv nrog ob peb ceg. Nws cov txheej txheem ntau lawm siv catalytic polymerization ntawm qis siab (10-80 bar) thiab qis dua kub (70-300 ° C). Cov linear, ntom molecular qauv no muab HDPE ib tug siab dua ceev dua LDPE, nrog rau rigidity thiab lub zog ntau dua nyob rau hauv mechanical khoom.
Cov Khoom Siv Lub Cev thiab Cov Khoom Siv Kho Tshuab
Kev Rigidity thiab Hardness
HDPE muaj qhov tawv thiab tawv dua li LDPE. Qhov no ua rau HDPE tiv taus kev hloov pauv ntau dua thaum muaj cov khoom hnyav, ua rau nws tsim nyog rau cov ntawv thov uas xav tau lub zog siab. Ntawm qhov tod tes, LDPE muaj kev ywj pheej thiab ywj pheej ntau dua, ua rau nws tsim nyog rau cov ntawv thov uas xav tau kev ywj pheej thiab kev ywj pheej.
Kev Tiv Thaiv Kub thiab Tshuaj
LDPE muaj qhov kub ua haujlwm qis dua HDPE. Txawm li cas los xij, ob qho tib si tiv taus ntau yam tshuaj lom neeg. HDPE tiv taus cov tshuaj lom neeg thiab cov kuab tshuaj zoo dua, thaum LDPE yooj yim puas tsuaj los ntawm kev oxidation ntawm qhov kub siab.
Kev Tiv Thaiv Kev Cuam Tshuam
LDPE zoo dua hauv kev tiv taus kev cuam tshuam vim nws muaj kev ywj pheej ntau dua. Thaum kub qis, LDPE tsis tawg lossis tawg yooj yim. HDPE, txawm hais tias nyuaj dua, tuaj yeem ua rau lwj thaum kub qis heev.
Kev Tiv Thaiv Dej thiab Pa
Ob hom polyethylene paub txog lawv txoj kev tiv taus dej, tab sis HDPE muaj qhov nqus dej tsawg dua. Qhov no ua rau HDPE siv ntau dua hauv cov ntawv thov uas xav tau kev tiv taus dej noo thiab ntub dej.
Cov Ntawv Thov Kev Lag Luam
Ntim Khoom thiab Khaws Cia
LDPE siv dav hauv cov ntawv thov ntim khoom yooj ywm xws li cov hnab yas, cov zaj duab xis qhwv, thiab cov fwj, uas yuav tsum tau yoog tau thaum siv. Vim nws pob tshab, LDPE kuj feem ntau siv ua zaj duab xis ntim khoom uas xav tau kev pom tseeb ntawm cov khoom.
Ntawm qhov tod tes, HDPE feem ntau siv rau hauv cov ntim khoom uas xav tau lub zog thiab kev ruaj khov, xws li cov fwj mis nyuj, cov ntim tshuaj, thiab cov kaus poom jerry. HDPE kuj tseem siv los ua cov kav dej thiab roj vim nws tiv taus qhov siab thiab tshuaj lom neeg zoo.
Kev Lag Luam Tsim Kho
Hauv kev lag luam kev tsim kho, HDPE siv dav vim nws lub zog thiab tiv taus qhov chaw ib puag ncig hnyav. Cov kav dej HDPE siv rau cov dej, roj, thiab cov kav dej phwj. Ntxiv mus, HDPE siv rau hauv cov ntawv thov geotextile thiab ua cov txheej tiv thaiv rau lwm cov ntaub ntawv tsim kho.
LDPE feem ntau siv ua ib txheej tiv thaiv rau cov xov hluav taws xob thiab ua ib zaj duab xis tiv thaiv hauv kev tsim kho, feem ntau vim nws qhov yooj ywm thiab tiv taus kev cuam tshuam.
Kev Ua Liaj Ua Teb
Hauv kev ua liaj ua teb, LDPE feem ntau siv los tsim cov yas yas rau mulch, uas pab tswj cov nroj tsuag thiab tswj cov av noo. Vim nws qhov yooj ywm thiab muaj peev xwm tiv taus te, LDPE kuj tseem siv rau hauv kev tsim kho qhov av thiab tsev cog khoom.
HDPE siv rau cov kav dej uas yuav tsum tau tiv taus dej siab. Nws txoj kev tiv taus tshuaj lom neeg kuj ua rau nws yog qhov kev xaiv zoo tshaj plaws rau cov tshuab dej uas xav tau kev siv chiv thiab tshuaj tua kab.
Cov Khoom Siv thiab Kev Thauj Mus Los
LDPE siv rau hauv kev tsim cov khoom ua si rau menyuam yaus, cov khoom siv hauv tsev, thiab cov khoom siv kho mob pov tseg vim nws muaj kev nyab xeeb thiab yooj ywm. HDPE, nrog nws lub zog thiab kev ruaj khov, feem ntau siv rau hauv kev tsim cov thawv, pallets, thiab cov thawv loj siv rau hauv kev thauj mus los thiab khaws cia khoom.
Ib puag ncig thiab Kev Siv Dua Tshiab
Ob hom yas no kuj txawv ntawm cov teeb meem ib puag ncig thiab kev siv dua tshiab. HDPE yooj yim dua rau kev siv dua tshiab thiab muaj ntau daim ntawv thov siv dua tshiab dua li LDPE. Cov khoom siv HDPE rov ua dua tshiab feem ntau siv rau hauv kev tsim cov kav dej, cov thawv, thiab cov khoom siv hauv tsev.
LDPE, txawm hais tias kuj siv tau dua tshiab los xij, feem ntau nyuaj dua vim nws muaj kev ywj pheej ntau dua thiab muaj kev sib kis ntau zaus nrog lwm cov ntaub ntawv. Txawm li cas los xij, nrog rau kev siv thev naus laus zis nce qib, kev siv dua tshiab ntawm LDPE tab tom nce ntxiv.
Xaus
Hauv kev lag luam niaj hnub no, ob qho tib si LDPE thiab HDPE ua lub luag haujlwm tseem ceeb thiab sib pab. LDPE, nrog nws qhov yooj ywm thiab kev tiv thaiv kev cuam tshuam, zoo dua rau cov ntawv thov uas xav tau kev yooj ywm thiab kev ntim khoom yooj ywm. Ntawm qhov tod tes, HDPE, nrog nws qhov kev tawv thiab lub zog, zoo dua rau cov ntawv thov uas xav tau lub zog siab thiab kev ruaj khov.
Qhov sib txawv ntawm cov qauv tshuaj lom neeg thiab cov txheej txheem tsim khoom ntawm LDPE thiab HDPE cuam tshuam rau lawv cov khoom siv lub cev thiab cov khoom siv kho tshuab, uas ua rau lawv siv tau zoo tshaj plaws hauv ntau yam lag luam. Kev nkag siab txog cov kev sib txawv no yog qhov tseem ceeb rau kev xaiv cov khoom siv zoo rau cov kev xav tau tshwj xeeb, kom ntseeg tau tias muaj kev ua haujlwm zoo tshaj plaws thiab kev ua tau zoo hauv txhua daim ntawv thov kev lag luam.
