1. Isingeniso
I-Polyethylene terephthalate (PET) ingenye ye-thermoplastics eguquguqukayo kakhulu futhi esetshenziswa kabanzi emhlabeni. Njengezinto eziyinhloko zamabhodlela eziphuzo, ukupakishwa kokudla, kanye nemicu yokwenziwa, i-PET ihlanganisa izakhiwo zomzimba ezinhle kakhulu kanye nokuphindeka kabusha. Lesi sihloko sihlola izici ezibalulekile ze-PET, izindlela zokucubungula, kanye nezinhlelo zokusebenza ezahlukahlukene kuzo zonke izimboni.
2. Izakhiwo Zezinto
Izakhiwo Zomzimba Nezomshini
- Isilinganiso Samandla Aphezulu-kuya-Esisindoni: Amandla okuqina angu-55-75 MPa
- Ukucaca: >90% ukudluliswa kokukhanya (amamaki ekristali)
- Izakhiwo Zesithiyo: Ukumelana okuhle kwe-CO₂/O₂ (kuthuthukiswe ngezingubo)
- Ukumelana Nokushisa: Ingalungiselelwa kuze kufike ku-70°C (150°F) ngokuqhubekayo
- Ubuningi: 1.38-1.40 g/cm³ (engaguquki), 1.43 g/cm³ (ikristali)
Ukumelana namakhemikhali
- Ukumelana okuhle kakhulu namanzi, utshwala, uwoyela
- Ukumelana okumaphakathi nama-asidi/izisekelo ezibuthakathaka
- Ukumelana okungekuhle nama-alkali aqinile, ezinye izinyibilikisi
Iphrofayili Yezemvelo
- Ikhodi Yokusebenzisa Kabusha: #1
- Ingozi ye-Hydrolysis: Iyancipha emazingeni okushisa aphezulu/i-pH
- Ukuphinde kusetshenziswe: Kungacutshungulwa kabusha izikhathi ezingu-7-10 ngaphandle kokulahlekelwa yimpahla enkulu
3. Izindlela Zokucubungula
| Indlela | Izicelo Ezijwayelekile | Izinto Ezibalulekile Okufanele Uzicabangele |
|---|---|---|
| Ukubumba Kokunwebeka Komjovo | Amabhodlela okuphuza | Ukuqondiswa kwe-Biaxial kuthuthukisa amandla |
| Ukukhipha | Amafilimu, amashidi | Kudinga ukupholisa okusheshayo ukuze kucace |
| Ukuphotha Kwefayibha | Izindwangu (i-polyester) | Ukuzungeza ngesivinini esikhulu ku-280-300°C |
| Ukwakha i-Thermoforming | Amathileyi okudla | Ukomisa kusengaphambili kubalulekile (≤50 ppm umswakama) |
4. Izicelo Ezinkulu
Ukupakisha (73% wesidingo somhlaba wonke)
- Amabhodlela Okuphuza: amayunithi ayizigidigidi ezingama-500 ngonyaka
- Izitsha Zokudla: Amathileyi afakwa kwi-microwave, amagobolondo esaladi
- Imithi: Amaphakethe ama-blister, amabhodlela emithi
Izindwangu (isidingo esingu-22%)
- I-Polyester Fiber: Izingubo, i-upholstery
- Izindwangu Zobuchwepheshe: Amabhande Esihlalo, amabhande okuhambisa
- Izinto Ezingalukwanga: Ama-Geotextile, imidiya yokuhlunga
Ukusetshenziswa Okusafufusa (5% kodwa kuyakhula)
- Ukuphrinta kwe-3D: Izintambo ezinamandla aphezulu
- Ama-elekthronikhi: Amafilimu okufaka umswakama, izingxenye ze-capacitor
- Amandla Avuselelekayo: Amashidi angemuva ephaneli yelanga
5. Intuthuko Yokuzinza
Ubuchwepheshe Bokuvuselela
- Ukuvuselelwa Kwemishini (90% we-PET ephinde yasetshenziswa)
- Inqubo yokuwasha-ukuncibilikisa-ukuncibilikisa
- Ukudla okusesigabeni esiphansi kudinga ukuhlanzwa kahle kakhulu
- Ukuvuselelwa Kwamakhemikhali
- I-Glycolysis/depolymerization ibe yi-monomers
- Izinqubo ze-enzyme ezisafufusa
I-PET Esekelwe Ku-Bio
- Izingxenye ze-MEG ezithathwe ezitshalweni ezingama-30%
- Ubuchwepheshe be-Coca-Cola's PlantBottle™
- Intengo yamanje yeprimiyamu: 20-25%
6. Ukuqhathaniswa ne-Alternative Plastics
| Impahla | I-PET | I-HDPE | PP | I-PLA |
|---|---|---|---|---|
| Ukucaca | Kuhle kakhulu | Okungacacile | Okukhanyayo | Kuhle |
| Izinga lokushisa eliphezulu lokusetshenziswa | 70°C | 80°C | 100°C | 55°C |
| Isithiyo Se-Oxygen | Kuhle | Kubi | Okumaphakathi | Kubi |
| Izinga Lokusebenzisa Kabusha | 57% | 30% | 15% | <5% |
7. Umbono Wesikhathi Esizayo
I-PET iyaqhubeka nokubusa ekupakisheni okusetshenziswa kanye ngenkathi ikhula ibe yizicelo ezihlala isikhathi eside ngokusebenzisa:
- Ubuchwepheshe bokuvimbela obuthuthukisiwe (i-SiO₂ coating, i-multilayer)
- Ingqalasizinda yokuvuselela ethuthukisiwe (i-PET evuselelwe ngamakhemikhali)
- Ukuguqulwa kokusebenza (ama-nano-composites, ama-impact modifier)
Ngokulinganisela kwayo okuyingqayizivele kokusebenza, ukucutshungulwa kanye nokusetshenziswa kabusha, i-PET isalokhu ibalulekile emnothweni wepulasitiki womhlaba wonke ngenkathi ishintshela kumamodeli okukhiqiza ayindilinga.
Isikhathi sokuthunyelwe: Julayi-21-2025