Koj puas paub dab tsi linear tsawg ntom polyethylene yog? Tam sim no, nws suab loj thiab zoo nkauj, tab sis tsis ntshai, kev piav qhia yooj yim tab tom los! Cov khoom yog super txias, thiab peb lub tuam txhab, Yuezheng, ua cov khoom no uas muaj ib tuj ntawm daim ntaub ntawv nyob ib ncig ntawm peb. Kab lus no yuav qhia koj txog LLDPE-nws yog dab tsi, qhov sib txawv ntawm qhov twg, yuav nrhiav tau nws nyob qhov twg hauv ntau yam khoom koj siv txhua hnub, thiab peb tsim nws li cas hauv peb cov nroj tsuag.
Ib qho ntawm feem ntau siv plastics hauv cov khoom niaj hnub no yog linear low density polyethylene resin, los yog LLDPE. LLDPE feem ntau yog siv los ua cov ntaub ntawv xws li ntim, hnab, thiab ntawv. Nws yog lub npe hu ua "linear" vim tias nws cov khoom siv microscopic - hu ua molecules - yog nyob rau hauv kab ncaj nraim. Yog li thaum koj hnov cov neeg hais txog LLDPE, nws yog vim qhov kev npaj tshwj xeeb no uas muab qee yam tshwj xeeb piv rau lwm hom yas. Ua piv txwv, LLDPE yog qhov txawv ntawm HDPEhigh density polyethylene thiab low density polyethylene, LDPE. LLDPE yog hloov tau, muaj zog, thiab tawv, ua rau nws tsis tshua muaj kev siv.
LLDPE muaj ib qho ntawm cov khoom zoo tshaj plaws xws li nws yog mos thiab hloov tau. Qhov no txhais tau tias nws tuaj yeem ncab thiab khoov tau yooj yim rau hauv cov duab ntawm txhua yam nws yuav tsum nqa yam tsis muaj kev tawg. Xav txog kev qhwv ib qho khoom plig nrog stretchable yas qhwv; yog li LLDPE ua haujlwm! Nws tuaj yeem npog txhua yam ntawm tsheb kauj vab mus rau lub tsev. LLDPE kuj tseem muaj zog heev, tiv thaiv cov ntsiab lus thauj khoom sab hauv. Piv txwv li, nws yog puncture-resistant thiab tuaj yeem tiv taus cov tshuaj tsis muaj degrading. Qhov no yog vim li cas LLDPE yog qhov zoo ntawm kev ruaj ntseg cov khoom.
Muaj cov txiaj ntsig zoo ntawm kev siv LLDPE rau kev ntim khoom dua lwm cov ntaub ntawv, xws li ntawv, iav, thiab cov kev daws teeb meem zoo sib xws. Txawm li cas los xij, ib qho ntawm nws qhov txiaj ntsig tseem ceeb yog qhov tseeb tias LLDPE yog qhov hnyav. Qhov ntawd txhais tau tias nws tsis ntxiv qhov hnyav rau cov khoom xa tuaj uas txuag tau tus nqi thauj khoom. Cov khoom sib zog kuj tuaj yeem txo qhov kev xav tau ntau npaum li cov roj thaum lub sij hawm xa khoom, uas yog qhov zoo dua rau ib puag ncig.
LLDPE tsis txwv rau kev ntim khoom, nws tau siv dav hauv ntau lwm daim ntawv thov. Hauv kev ua liaj ua teb, piv txwv li, cov pas dej hauv pas dej uas khaws dej thiab tsev cog khoom npog uas tiv thaiv cov qoob loo los ntawm cov khoom tuaj yeem tsim los ntawm LLDPE. Nws yog siv nyob rau hauv geosynthetics, tshwj xeeb tshaj yog nyob rau hauv geomembranes thiab geotextiles nyob rau hauv ib tug landfill, pas dej ua ke, thiab lwm yam tseem ceeb lub tsev ventures. LLDPE hauv daim ntawv thov kev kho mob Ib daim ntawv thov tseem ceeb ntawm LLDPE siv hauv cov tshuaj yog kev tsim cov tshuaj tua kab mob, hnab, thiab tubing. Piv txwv li, lub tuam txhab tsheb siv LLDPE los tsim cov roj tso tsheb hlau luam, qhov rooj vaj huam sib luag, thiab txawm tias lub rooj zaum, txhua yam uas yuav tsum tau ua rau koj txoj kev nyab xeeb.
Tam sim no peb paub tias LLDPE yog dab tsi thiab peb siv nws li cas, cia saib seb peb ua li cas! Cov txheej txheem polymerization yog siv los tsim LLDPE. Qhov no yog lub ntsiab lus txhais tau tias peb ua ib yam dab tsi hu ua ethylene gas react nyob rau hauv siab thiab kub. Cov txheej txheem no tsim cov saw ntev ntawm cov molecules uas dhau los ua cov khoom siv yas. Tom qab ntawd cov polymer tuaj yeem muab pov rau hauv cov yeeb yaj kiab lossis molded rau hauv lwm cov duab, xws li pellets rau yav tom ntej.
Yog li peb siv ib yam dab tsi hu ua extrusion los ua LLDPE rau hauv qhov tseeb. Qhov no txhais tau tias peb coj LLDPE, yaj nws, thiab thawb nws los ntawm pwm los tsim cov duab uas xav tau. Qee lub sij hawm, peb kuj tseem muab LLDPE nrog cov ntaub ntawv sib txawv kom ua tiav nws cov khoom. Piv txwv li, peb tuaj yeem tsim kho nws, peb tuaj yeem ntxiv xim, peb tuaj yeem ua kom nws lom zem ntau dua lossis ua si ntau dua lossis peb tuaj yeem ua lwm yam kev xav.
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