Polyethylene (PE) yog cov khoom yas tseem ceeb uas siv dav hauv kev ntim khoom, kev tsim kho, kev kho mob thiab lwm yam. Hais txog seb cov yeeb yaj kiab polyethylene puas muaj tshuaj lom, peb yuav tsum ua tib zoo xav thiab txheeb xyuas nws cov khoom siv tshuaj, cov txheej txheem tsim khoom thiab cov xwm txheej ntawm kev siv.
1. Cov khoom siv tshuaj lom neeg ntawm polyethylene: Polyethylene yog cov khoom siv molecular siab tau los ntawm polymerization ntawm ethylene monomers. Nws cov qauv tshuaj yog qhov ruaj khov heev thiab tsis yooj yim rau kev cuam tshuam nrog lwm cov tshuaj. Yog li ntawd, los ntawm kev pom tshuaj, polyethylene nws tus kheej tsis muaj tshuaj lom.
2. Kev nyab xeeb hauv cov txheej txheem ntau lawm: Hauv kev tsim cov khoom siv polyethylene, qee cov tshuaj xws li catalysts thiab additives yuav raug siv. Cov tshuaj no tuaj yeem cuam tshuam rau tib neeg kev noj qab haus huv nyob rau hauv qee yam mob. Txawm li cas los xij, cov tuam txhab lag luam niaj hnub feem ntau nruj me ntsis tswj kev siv thiab cov seem ntawm cov tshuaj no thaum lub sij hawm tsim khoom los xyuas kom meej qhov kev nyab xeeb ntawm cov khoom. Yog li ntawd, ntev npaum li koj yuav polyethylene zaj duab xis uas tsim los ntawm cov tuam txhab tsis tu ncua, nws feem ntau muaj kev nyab xeeb thiab tsis muaj tshuaj lom.
3. Kev cuam tshuam ntawm kev siv: Thaum siv, polyethylene zaj duab xis tuaj yeem cuam tshuam los ntawm cov yam ntxwv xws li qhov kub thiab txias, lub teeb, thiab tshuaj lom neeg, uas tuaj yeem ua rau kev laus thiab degradation. Cov xwm txheej no tuaj yeem tso tawm qee yam teeb meem, xws li cov tshuaj tsis haum tshuaj organic (VOCs). Yog li ntawd, thaum siv polyethylene zaj duab xis, nws yog ib qho tsim nyog yuav tsum tsis txhob muaj qhov tsis zoo xws li qhov kub thiab txias, lub teeb muaj zog thiab cov tshuaj tiv thaiv corrosion los txo qhov tso tawm ntawm cov khoom tsis zoo.
4. Toxicity nyob rau hauv cov xwm txheej tshwj xeeb: Hauv qee qhov xwm txheej tshwj xeeb, cov yeeb yaj kiab polyethylene tuaj yeem pom muaj qee yam toxicity. Piv txwv li, thaum siv cov yeeb yaj kiab polyethylene los ntim cov zaub mov, yog tias cov yeeb yaj kiab muaj cov khoom siv ntau dhau los yog lwm yam tsis zoo, nws yuav ua rau muaj kev hem thawj rau kev nyab xeeb khoom noj. Tsis tas li ntawd, thaum siv cov yeeb yaj kiab polyethylene hauv kev kho mob, yog tias biocompatibility ntawm cov yeeb yaj kiab tsis zoo, nws yuav cuam tshuam rau tib neeg kev noj qab haus huv. Yog li ntawd, nyob rau hauv cov xwm txheej tshwj xeeb no, yuav tsum tau them nyiaj tshwj xeeb rau kev xaiv cov khoom tsim nyog thiab siv thiab tswj lawv nruj raws li cov qauv thiab cov cai.
Hauv cov ntsiab lus, polyethylene zaj duab xis nws tus kheej tsis muaj tshuaj lom, tab sis tej zaum yuav muaj qee yam kev nyab xeeb hauv kev tsim khoom, siv thiab xwm txheej tshwj xeeb. Yog li ntawd, txhawm rau ua kom muaj kev nyab xeeb ntawm cov yeeb yaj kiab polyethylene, peb yuav tsum ua tib zoo xav thiab tswj los ntawm ntau yam. Tsuas yog nyob rau hauv txoj kev no tuaj yeem ua tiav kev nyab xeeb, kev noj qab haus huv thiab ib puag ncig ntawm polyethylene zaj duab xis.
