Yuezheng tshwj xeeb hauv kev tsim cov khoom tshwj xeeb hu ua tsawg ntom polyethylene. Cov khoom no yog tsim los ntawm ntau cov khoom me me hu ua molecules uas txhua tus nyob ze ua ke. Nws yog ib tug thermoplastic thiab yog li ib daim ntawv ntawm yas. Qhov ntawd txhais tau tias thaum nws yog cua sov, nws tuaj yeem yaj thiab rov ua rau txhua yam duab. Thaum nws txias, nws solidifies ib zaug ntxiv. Piv txwv li, low density polyethylene (LDPE), kuj tseem muaj zog thiab kav ntev, uas yog vim li cas nws muaj txiaj ntsig zoo rau ntau, ntau yam khoom.
Tsawg ntom polyethylene resin tuaj yeem siv tau ntau yam sib txawv. Ntau lub hnab yas peb siv los nqa zaub mov, khaub ncaws, thiab lwm yam khoom hauv tsev los ntawm lub khw yog ua los ntawm cov yas no. Cov hnab no muaj txiaj ntsig thiab yooj yim rau peb vim lawv pab peb nqa khoom yooj yim. Tsawg ntom ntom polyethylene resin tseem siv los tsim cov thawv, hau thiab kaus mom rau cov khoom ntxiv rau lub hnab. Lawv ua cov thawv uas khaws koj cov zaub mov tshiab piv txwv. Tsis tas li ntawd, nws yuav tsum tau hloov mus rau hauv lub raj yas, uas yog siv rau kev siv kho mob, xws li noj tshuaj rau cov neeg mob.
Qhov tseeb tias ldpe tsawg ntom polyethylene muaj zog heev thiab tuaj yeem nyob ntev heev yog ib qho zoo tshaj plaws txog nws. Nws tuaj yeem tiv taus ntau qhov hnav thiab tsim kua muag, ua rau nws zoo tagnrho rau cov hnab yas thiab cov thawv uas peb ntsib tsis tu ncua. Lwm qhov zoo ntawm cov khoom no yog lub teeb yuag, ua kom yooj yim nqa, nqa, nqa, thiab khaws cia. Qhov no ua rau muaj kev cuam tshuam loj rau cov khoom lag luam uas yuav tsum tau txav los ntawm point A mus rau point B.
Tab sis nrog tsawg ntom polyethylene resin kuj tuaj qee yam tsis zoo. Qhov ntawd yog ib qho teeb meem loj vim nws tsis degrade sai hauv ib puag ncig. Qhov ntawd txhais tau tias nws, thaum peb muab pov tseg, tuaj yeem nyob hauv qhov chaw pov tseg rau lub sijhawm ntev heev, uas tuaj yeem ua rau muaj teeb meem txog qhov nws muab pov tseg. Nws tuaj yeem ua phem rau ib puag ncig thiab tsiaj qus vim nws tsis yooj yim rau decompose. Tsis tas li ntawd, polyethylene resin tsis tshua muaj siab yog tsim los ntawm cov peev txheej uas tsis yog siv dua tshiab. Qhov ntawd txhais tau tias ua rau nws ua rau muaj kev ua qias tuaj thiab kev hloov pauv huab cua, uas yog cov teeb meem loj heev uas ntsib peb lub ntiaj teb.
Tsawg-density polyethylene (LDPE) resin muaj ntau yam kev siv thoob plaws ntau lub lag luam. Nws yog dav siv hauv kev lag luam ntim khoom, tsim cov hnab yas, ntim, thiab cov ntaub qhwv uas tswj kev nyab xeeb thiab tshiab ntawm cov khoom. Piv txwv li, nyob rau hauv kev tsim cov yas tubing thiab cov ntawv siv hauv cov khoom siv. Cov kav dej thiab cov rwb thaiv tsev cov khoom ua los ntawm cov chaw so qis polyethylene resin tau pab tsim cov tsev muaj zog thiab tsev nyob hauv kev tsim kho vaj tse.
Tsawg ntom polyethylene resin tseem muaj kev nyab xeeb rau kev siv tshuaj, thiab tiv taus cov tshuaj ntxuav feem ntau. Nws yog siv los tsim cov khoom tseem ceeb xws li cov raj kho mob uas tuaj yeem nqa cov kua dej rau cov neeg mob, thiab cov hnab siv los tuav cov tshuaj IV. Tsis tas li ntawd, nws tuaj yeem siv los tsim cov khoom siv kho mob xws li cov koob txhaj tshuaj thiab cov cuab yeej phais. Cov ntawv thov no qhia txog qhov tseem ceeb ntawm qhov ntom ntom polyethylene resin tiv thaiv kev noj qab haus huv thiab kev nyab xeeb ntawm tib neeg.
Ntau ntau tuaj yeem cuam tshuam rau kev ua haujlwm thiab kev coj tus cwj pwm ntawm cov khoom siv polyethylene tsawg. Ib qho tseem ceeb cuam tshuam qhov no yog qhov loj ntawm cov molecules uas muaj cov yas. Thaum cov molecules loj, cov yas yog tawv thiab muaj zog, uas yog qhov tsim nyog rau cov khoom siv ntev. Qhov thib ob yog tus nqi ntawm cov ceg ntoo hauv cov qauv molecular ntawm cov resin. Nyob rau hauv lub xub ntiag ntawm ntau ceg, cov yas yuav hloov tau ntau dua thiab tsawg ntom thiab zoo dua nyob rau hauv ib co kev siv.
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