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Umlando we-PET (Polyethylene terephthalate)

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Njengoba zitholwe ngo-1941, izakhiwo zama-polyester polymers sezisungulwe kahle ezimbonini ze-fiber, zokupakisha kanye nezakhiwo zepulasitiki, ngenxa yokusebenza kwazo okuphezulu. I-PET yenziwa ngama-polymers we-thermoplastic acacisiwe kakhulu. I-polymer inenani elikhulu lezakhiwo ezikulungele ukukhiqizwa kwezinto ezingashesha ukubumbeka, ezingamelana nokushisa nemikhiqizo yezentengiselwano esezingeni eliphakeme. I-PET itholakala ngamamaki asobala futhi anemibala.

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Izinzuzo
Phakathi kwezinzuzo zobuchwepheshe be-PET, kungashiwo ukubekezelelwa okuhle kakhulu nokuqina. Isikhathi sokujikeleza isikhunta esisheshayo kakhulu
nezici ezinhle zokudweba ezijulile ezinobukhulu obudongeni. Akukho ukomiswa kwepuleti ngaphambi kokubunjwa. Ukusetshenziswa okubanzi (-40 ° kuya + 65 °). Kungenziwa kubanda ngokugoba. Ukumelana okuhle kakhulu kumakhemikhali, izixazululi, izinto zokuhlanza, uwoyela namafutha njll. Ukumelana okuphezulu nokuqhekeka kwengcindezi nokukhwabanisa. I-PET inezinzuzo eziningi zezohwebo. Isikhathi esifushane sokujikeleza siqinisekisa ukukhiqiza okuphezulu ekusebenzeni kokubumba. Ikhanga ngobuhle: isicwebezelisi esiphakeme, ukubonakala okusobala okuphezulu noma ukulingana kombala futhi kungaphrintwa noma kuhlotshiswe kalula ngaphandle kokwelashwa kwangaphambili. Ukusebenza kobuchwepheshe obuhlukahlukene futhi kusetshenziswe kabusha ngokuphelele.
 
Ukusetshenziswa Njengoba yethulwe emakethe, i-PET ihlolwe ngempumelelo ezinhlelweni ezahlukahlukene ezinjengezimpahla zangasese (amabhavu, ama-shower cubicles), ukuhweba okuthengiswayo, izimoto (futhi nezinqola), izindawo zokuxhumana ngocingo, izindawo zokuhlala amabhasi njll. I-PET ilungele ukudla kanye nezicelo zezokwelapha kanye nokuvala inzalo ye-gamma-radiation.

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Kunezinhlobo ezimbili eziyinhloko ze-PET: i-Amorphous PET (APET) ne-crystalline PET (CPET), umehluko obaluleke kakhulu ukuthi i-CPET icaciswe kancane, kuyilapho i-APET i-amorphous. Ngenxa yesakhiwo sayo samakristalu esincanyana i-CPET ilula, kuyilapho i-APET inesakhiwo esimangazayo, isinika ikhwalithi esobala.


Isikhathi Iposi: Mar-17-2020