RPET, isifinyezo se-polyethylene tetraphyte esetyenzisiweyo isetyenziswa ngokuqhelekileyo.Siza kucacisa i-PET ngakumbi apha ngezantsi.Kodwa okwangoku, yazi ukuba i-PET yeyesine i-resin yeplastiki esetyenziswa kakhulu kwihlabathi.I-PET inokufumaneka kuyo yonke into ukusuka kwimpahla kunye nokupakishwa kokutya.Ukuba ubona igama elithi "RPET", kuthetha ukuba i-PET esetyenzisiweyo kwimveliso ifanele ukuba ivela kumthombo owawusetyenziswa ngaphambili.
Yintoni i-polyethylene Tetraphyte?
Ukucaca, iplastiki nganye owakhe wayisebenzisa yenziwe ngepolymer ethile.Iibhotile zobisi ze-PVC ziya kwenziwa ngezinto ezahlukileyo kuneebhotile zamanzi ze-PET.
I-PET yenziwe ngeoyile ekrwada.Imekobume ichaphazeleka kakhulu yinkqubo yokukhupha ioli ekrwada emhlabeni.Ukwenza i-PET etyhidiweyo, kufuneka uthathe utywala obubizwa ngokuba yi-Ethylene glycol kwaye uyixube kunye ne-terephthalic acids.I-Esterification yenzeka xa zombini iimveliso zidityanisiwe, zenza i-PET, i-polymer chain ende.
Sikhetha iipolima ngokusekelwe kwindlela imveliso yokugqibela eya kwenza ngayo.I-PET yi-thermoplastic.Oku kuthetha ukuba inokugotywa ngokulula kwimilo oyifunayo ngokuyifudumeza, kwaye ke iya kuwagcina amandla ayo xa sele ipholile.I-PET inobunzima obulula, ayinatyhefu kwaye yomelele kakhulu.Kungenxa yoko le nto iyeyona nto ikhethiweyo yokupakishwa kweshishini lokutya kunye nesiselo.
Ngaba ii-PETs zisetyenziselwa ukupakisha kuphela?
Hayi. Ushishino lweebhotile zeplastiki ngowona msebenzisi mkhulu we-PET kwihlabathi kwi-30%.Nangona kunjalo, oku akukuphela kwemeko.Nangona i-PET iqhele ukubizwa ngokuba yi-polyester, kusenokwenzeka ukuba iimpahla ezininzi kwiwadi yakho zenziwe nge-PET.Ulwelo aluvumelekanga ukuba lubumbe kwisikhongozeli esisenziwayo.Endaweni yoko, idlula kwi-spinnerate (phantse intloko yeshawa) kwaye yenze imicu emide.Le misonto inokudityaniswa ukwenza ilaphu elikhaphukhaphu, elomeleleyo.Ipolyester yeyona isetyenziswayo ifayibha eyenziwe ngumntu kwishishini lelaphu.I-polyester kulula ukuyivelisa kunomqhaphu, kwaye ayichaphazeleki kancinci kukuguquguquka kwexabiso ngenxa yeemeko zemozulu.Kusenokwenzeka ukuba isinxibo osinxibileyo ngoku sinepolyester.Ipolyester isetyenziswa kakhulu ekwenzeni iintente kunye namabhanti okuhambisa.I-polyester iyakwazi ukuphatha phantse yonke into efuna ukukhanya kunye nokuqina.
Amanqaku e-PET alungileyo namabi
I-PET ineengenelo ezininzi, ezibandakanya ukuhlala ixesha elide kunye nokuguquguquka kunye nokuba nexabiso eliphantsi kunezinye iindlela.I-PET inokuphinda isetyenziswe, njengezinye iiplastiki.E-UK, kuphela i-3% yaphinda yahlaziywa kwiibhotile ze-PET kwi-2001. Eli nani lenyuka laya kwi-60% ngo-2014 ngenxa yokuba abavelisi beziselo batshintshela kwiibhotile ze-PET naphi na apho kunokwenzeka khona, kunye namanyathelo angaphezulu kazwelonke okwenza kube lula ukuphinda asetyenziswe.
I-PET inobunye bobuthathaka bayo obukhulu.I-PET ngumxube womelele kangangokuba kuthatha iminyaka engama-700 ukuwohloka ube ngumhlaba.Nangona ukurisayikilishwa kwe-PET kubone ukuphucuka okuphawulekayo kule minyaka ilishumi idlulileyo, kusekuninzi ekufuneka kwenziwe.Iindawo ezininzi zehlabathi sele zineentaba ezinkulu njengezixeko ezincinci, ezizaliswe ngeplastiki ye-PET kuphela.Siyaqhubeka ukongeza kwezi ndawo zokulahla yonke imihla ngenxa yokusetyenziswa kwethu kakhulu kwe-PET.
Iplastiki yePET yikhompawundi eyomelele kakhulu.Kuthatha iminyaka engama-700 ukuba iplastiki ye-PET yaphulwe ukuba iphelela kwindawo yokulahla inkunkuma.Kukho iindawo zehlabathi ezineentaba ezinkulu njengezixeko ezincinci, kodwa zonke zenziwe ngeplastiki yePET.
Ngoko, njaniRPETukusombulula ingxaki yongcoliseko lweplastiki kwihlabathi lethu?
I-RPET ngokuyisiseko ithatha iplastiki esele yenziwe (ngokuqhelekileyo iibhotile zeplastiki) kwaye iyaphule ibe ngamaqhekeza amancinci.I-PET kumbindi webhotile nganye yahlulwe ngokunyibilikisa ezi flakes.I-PET ingasetyenziselwa ukwenza yonke into ukusuka kwi sweatshi ukuya kwezinye iibhotile zeplastiki.Le PET inamandla angama-50% ngaphezulu kokwenza i-PET ukusuka ekuqaleni.Ukongeza, iibhotile ezikhoyo zingasetyenziselwa ukwenza i-PET, oku kuthetha ukuba azipheli kwindawo yokulahla inkunkuma.Oku kusivumela ukuba silishiye ihlabathi njengoko linjalo.Endaweni yokukhupha isithako esiphambili kwi-oyile ekrwada, enokonakalisa ngokugqithisileyo, sisebenzisa ubuninzi bemveliso ebinokuba negalelo ngokuthe ngqo kwitiphu.
Ixesha lokuposa: Sep-02-2022