Polyethylene yeeb nkab technology

Polyethylene yas kav feem ntau muab faib ua ob pawg: high-density polyethylene HDPE (low-pressure polyethylene) thiab low-density polyethylene LDPE (high-pressure polyethylene). Daim ntawv thov ntawm cov ntaub ntawv polyethylene yog dav heev, thiab thaj tsam ntawm cov kav dej tsuas yog ib qho tseem ceeb ntawm daim ntawv thov polyethylene. Vim tias qhov sib txawv ntawm lub cev ntawm HDPE thiab LDPE, ob cov ntaub ntawv muaj kev sib txawv hauv cov kav dej: low density polyethylene (LDPE) muaj qhov ua tau zoo. Txawm li cas los xij, lub zog compressive kuj tsis tshua muaj, yog li nws tsuas yog siv tau rau cov kav dej tsis tshua muaj siab thiab cov kav dej me me. Nws yog feem ntau ua rau hauv coils thiab siv rau kev txhim kho dej nyob deb nroog thiab qee lub sijhawm tsis siv sijhawm ntev. Txawm li cas los xij, high-density polyethylene (HDPE) muaj kev ua haujlwm zoo, yog li nws tau siv dav hauv cov kav dej siab (xws li PE80 thiab PE100). Kev txhais lus ntawm PE80 yog tias cov khoom siv yeeb nkab tsis raug puas tsuaj tom qab 50 xyoo ntawm kev nruam compression ntawm 20 degree, thiab qhov tsawg kawg nkaus yuav tsum muaj zog rau cov yeeb nkab phab ntsa yog 80MPa, thiab lwm yam. Nyob rau theem pib ntawm txoj kev loj hlob ntawm cov yeeb nkab yas, kev siv cov kav dej polyethylene siab tsawg dua li cov kav dej polyvinyl chloride, kev ua haujlwm siab thiab muaj zog polyethylene kav. Nrog rau qhov tshwm sim ntawm HDPE cov ntaub ntawv tshiab thiab thev naus laus zis, tus nqi (qhov hnyav) qhov sib txawv tau hloov pauv tseem ceeb. Nrog kev tshwm sim ntawm ob tiam polyethylene yeeb nkab cov ntaub ntawv (sib npaug rau PE80) thiab thib peb-tiam polyethylene yeeb nkab cov ntaub ntawv (sib npaug rau PE100), qhov hnyav ntawm cov kav dej polyethylene ntawm tib qhov ntev tsuas yog 93 feem pua ​​​​ntawm qhov hnyav ntawm UPVC kav hauv qab tib yam. txoj kab uas hla, 200, thiab qib siab thiab tej yam kev mob. Yog li ntawd, tiam thib ob thiab thib peb cov khoom siv polyethylene yeeb nkab tsis yog tsuas yog txhim kho qhov tsawg kawg nkaus uas yuav tsum tau muaj zog ntawm PE, tab sis kuj txhim kho nws cov kev tiv thaiv rau ib puag ncig kev ntxhov siab tawg, nrog rau kev loj hlob tawg tsis kam. Qhov tseem ceeb tshaj, nyob rau hauv tib lub zog ua haujlwm, lawv tuaj yeem txo cov phab ntsa tuab thiab ua rau kom muaj kev xa khoom hla ntu. Los ntawm kev ua kom lub siab siv nyob rau hauv tib lub phab ntsa tuab, kev thauj mus los muaj peev xwm tuaj yeem txhim kho (piv txwv li, thaum thauj cov pa roj carbon monoxide nyob rau hauv tib phab ntsa tuab, kev thauj mus los siab tuaj yeem ncav cuag 10 bar siv PE100 polyethylene kav, thiab tsuas yog 8 bar siv PE80 polyethylene. cov kav dej). Nrog rau kev txhim kho ntawm polyethylene thev naus laus zis, cov txiaj ntsig kev lag luam tau nce ntxiv. Tsis ntev los no, nws tau raug tshaj tawm tias plaub tiam polyethylene yeeb nkab cov khoom siv PE125 tau ua tiav tiav, uas tuaj yeem kwv yees tias txoj kab uas hla loj dua thiab cov kav dej polyethylene siab yuav muaj ntau yam kev siv.