I-RPET, isifinyezo se-polyethylene tetraphyte esenziwe kabusha sisetshenziswa kakhulu.Sizobe sichaza i-PET kancane ngezansi.Kodwa okwamanje, yazi ukuthi i-PET iyi-resin yesine yepulasitiki esetshenziswa kakhulu emhlabeni.I-PET ingatholakala kukho konke kusukela ekufakweni kwezingubo nokudla.Uma ubona igama elithi "I-RPET", kusho ukuthi i-PET esetshenziswe emkhiqizweni kufanele ngabe iphuma emthonjeni owawusetshenziswa ngaphambilini.
Iyini i-polyethylene Tetraphyte?
Ukuze kucace, ipulasitiki ngayinye owake wayisebenzisa yenziwa kusetshenziswa i-polymer ethile.Amabhodlela obisi e-PVC azokwenziwa ngento ehlukile kunamabhodlela amanzi e-PET.
I-PET yenziwe ngamafutha angcolile.Imvelo ithinteka kakhulu ngenqubo yokukhipha amafutha angcolile emhlabathini.Ukwenza i-PET encibilikisiwe, udinga ukuthatha utshwala obubizwa ngokuthi i-Ethylene glycol bese uyixuba nama-terephthalic acid.I-Esterification yenzeka lapho yomibili imikhiqizo ihlanganiswa, idala i-PET, i-polymer yeketango elide.
Sikhetha ama-polymers ngokuya ngokuthi umkhiqizo wokugcina uzosebenza kanjani.I-PET iyi-thermoplastic.Lokhu kusho ukuthi ingagoba kalula ibe yisimo oyifunayo ngokuyifudumeza, bese igcina amandla ayo uma isipholile.I-PET inesisindo esilula, ayinabo ubuthi futhi ihlala isikhathi eside kakhulu.Yingakho kuyimpahla yokupakisha ekhethwayo yemboni yokudla neziphuzo.
Ingabe i-PETs isetshenziselwa ukupakisha kuphela?
Cha. Imboni yamabhodlela epulasitiki ingumsebenzisi omkhulu we-PET emhlabeni ngama-30%.Nokho, akusona lesi simo kuphela.Nakuba i-PET ivame ukubizwa ngokuthi i-polyester, kungenzeka ukuthi izingubo eziningi ku-wardrobe yakho zenziwe nge-PET.Uketshezi aluvunyelwe ukubumba esitsheni esakhiwayo.Esikhundleni salokho, idluliswa nge-spinnerate (cishe ikhanda lokugeza) futhi yakhe imicu emide.Le micu ingalukwa ndawonye ukuze kwenziwe indwangu engasindi, eqinile.I-polyester iyifayibha eyenziwe umuntu esetshenziswa kakhulu embonini yendwangu.I-polyester kulula ukuyikhiqiza kunokotini, futhi ayingenwa kalula ukushintsha kwentengo ngenxa yesimo sezulu.Kungenzeka kakhulu ukuthi ingubo oyigqokile njengamanje iqukethe i-polyester.I-polyester isetshenziswa kakhulu ekwenzeni amatende namabhande okuthutha.I-polyester iyakwazi ukuphatha cishe noma yini edinga ukulula futhi ihlala isikhathi eside.
Amaphuzu e-PET amahle namabi
I-PET inezinzuzo eziningi, okuhlanganisa ukuhlala isikhathi eside nokuguquguquka kanye nokuba ishibhile kunezinye izinketho.I-PET ingasetshenziswa kabusha, njengamanye amapulasitiki.E-UK, ama-3% kuphela aphinde agaywa kabusha kusuka emabhodleleni e-PET ngo-2001. Leyo nombolo ikhuphuke yafinyelela ku-60% ngo-2014 ngenxa yabakhiqizi beziphuzo abashintshela kumabhodlela e-PET noma nini lapho kungenzeka khona, kanye nezinhlelo eziningi kazwelonke zokuvuselela kabusha okwenza kube lula ukugaywa kabusha.
I-PET inobunye bobuthakathaka bayo obukhulu kakhulu.I-PET iyinhlanganisela enamandla kangangokuthi kuthatha iminyaka engu-700 ukuwohloka ibe inhlabathi.Nakuba ukugaywa kabusha kwe-PET kuye kwaba nentuthuko enkulu phakathi neminyaka eyishumi edlule, kusekuningi okufanele kwenziwe.Izingxenye eziningi zomhlaba sezivele zinezintaba ezinkulu njengamadolobha amancane, agcwele ipulasitiki ye-PET kuphela.Siyaqhubeka nokungeza kulezi zindawo zokulahla imfucumfucu usuku nosuku ngenxa yokusebenzisa kwethu kanzima i-PET.
Ipulasitiki ye-PET iyinhlanganisela ehlala isikhathi eside kakhulu.Kuthatha iminyaka engu-700 ukuthi ipulasitiki ye-PET iphuke uma iphelela endaweni yokulahla imfucumfucu.Kunezingxenye zomhlaba ezinezintaba ezinkulu njengamadolobha amancane, kodwa zonke zenziwe ngepulasitiki ye-PET.
Ngakho, kanjaniI-RPETukuxazulula inkinga yokungcoliswa kwepulasitiki emhlabeni wethu?
I-RPET ngokuyisisekelo ithatha ipulasitiki esele idaliwe (imvamisa amabhodlela epulasitiki) bese iwahlephula abe ama-flakes amancane.I-PET engaphakathi kwebhodlela ngalinye ihlukaniswa ngokuncibilikisa lawa ma-flakes.I-PET ingasetshenziswa ukwenza yonke into kusuka kumajezi kuya kwamanye amabhodlela epulasitiki.Le PET ingonga amandla ngo-50% kunokwenza i-PET kusuka ekuqaleni.Ukwengeza, amabhodlela akhona angasetshenziswa ukwenza i-PET, okusho ukuthi awagcini ngokulahlwa.Lokhu kusivumela ukuthi siwushiye umhlaba njengoba unjalo.Esikhundleni sokukhipha isithako esiyinhloko kuwoyela ongahluziwe, okungalimaza kakhulu, sisebenzisa insada yomkhiqizo obungaba nomthelela ngokuqondile ekulahlweni imfucumfucu.
Isikhathi sokuthumela: Sep-02-2022