1. Nhanganyaya
Polyethylene terephthalate (PET) ndeimwe yethermoplastics dzinoshandiswa zvakanyanya pasi rose. Sechinhu chikuru chekugadzira mabhodhoro ezvinwiwa, kurongedza chikafu, uye fiber dzekugadzira, PET inosanganisa hunhu hwakanaka hwemuviri nekudzokorodza. Chinyorwa chino chinoongorora hunhu hukuru hwePET, nzira dzekugadzirisa, uye mashandisirwo akasiyana-siyana mumaindasitiri.
2. Zvimiro zveZvinhu
Zvimiro zveMuviri neMakanika
- Simba Rakakura-Kusvika-Kurema Chiyero: Simba rekusimba re55-75 MPa
- Kujeka: >90% mwenje wekutumira (magiredhi ekristalline)
- Zvimiro zveChipingamupinyi: Kudzivirira kwakanaka kweCO₂/O₂ (kwakawedzerwa nekuputira)
- Kuramba Kupisa: Inogona kushandwa kusvika 70°C (150°F) nguva dzose
- Kuwanda: 1.38-1.40 g/cm³ (isina chimiro), 1.43 g/cm³ (yakajeka)
Kuramba Kemikari
- Kudzivirira kwakanaka kumvura, alcohols, mafuta
- Kuramba zvine mwero kune asidhi/zvigadziko zvisina simba
- Kusakwanisa kurwisa alkali dzakasimba, zvimwe zvinonyungudutsa
Nhoroondo Yezvakatipoteredza
- Kodhi Yokudzokorodza: #1
- Njodzi yeHydrolysis: Inoderera pakupisa kwakanyanya/pH
- Kudzokororwazve: Inogona kugadziriswazve ka7-10 pasina kurasikirwa kukuru kwepfuma
3. Nzira dzekugadzirisa
| Maitiro | Maitiro Akajairika | Zvinhu Zvikuru Zvekufunga nezvazvo |
|---|---|---|
| Jekiseni Rongedza Blow Moulding | Mabhodhoro ezvinwiwa | Kurongeka kweBiaxial kunovandudza simba |
| Kuburitsa | Mafirimu, mapepa | Zvinoda kutonhodza nekukurumidza kuti zvive pachena |
| Kutenderera kweFiber | Machira (polyester) | Kutenderera nekukurumidza pa 280-300°C |
| Kugadzira Thermoforming | Matrei ezvekudya | Zvakakosha kuomesa usati watanga (≤50 ppm hunyoro) |
4. Mashandisirwo Makuru
Kurongedza (73% yezvinodiwa pasi rose)
- Mabhodhoro eZvinwiwa: mayunitsi mabhiriyoni mazana mashanu pagore
- Zvirongo Zvekudya: Matreyi anoiswa mu microwave, mashell esaladhi
- Mishonga: Mapaketi emabhurugwa, mabhodhoro emishonga
Machira (22% zvinodiwa)
- Polyester Fiber: Zvipfeko, midziyo yemumba
- Machira eUnyanzvi: Mabhandi eChigaro, mabhandi ekutakura zvinhu
- Zvisina Kurukwa: Mageotextiles, firita
Mashandisirwo Ari Kukura (5% asi Ari Kukura)
- Kudhinda kwe3D: Filaments dzakasimba kwazvo
- Zvemagetsi: Mafirimu ekudzivirira kupisa, zvikamu zve capacitor
- Simba Rinodzokororwa: Mapepa ekumashure emagetsi ezuva
5. Kufambira Mberi Kwekuchengetedza
Tekinoroji dzeKudzokorodza
- Kudzokorodzazve Michina (90% yePET yakadzokorodzwa)
- Maitiro ekusuka-kunyungudutsa-kunyungudutsa-kusuka
- Kudya kwemhando yepamusoro kunoda kucheneswa zvakanyanya
- Kudzokorodza Makemikoro
- Glycolysis/depolymerization kune monomers
- Maitiro e enzyme ari kubuda
PET Yakavakirwa paBio
- 30% zvikamu zveMEG zvinobva mumiti
- Tekinoroji yeCoca-Cola's PlantBottle™
- Mutengo weparizvino: 20-25%
6. Kuenzanisa neMapurasitiki Anoshandiswa Pamwe Chete
| Pfuma | PET | HDPE | PP | PLA |
|---|---|---|---|---|
| Kujeka | Zvakanakisa | Ruvara rusina kujeka | Inopenya | Kugona |
| Kupisa Kwakanyanya Kwekushandisa | 70°C | 80°C | 100°C | 55°C |
| Chipingamupinyi cheokisijeni | Kugona | Murombo | Zviri pakati nepakati | Murombo |
| Mwero wekudzokorodza | 57% | 30% | 15% | <5% |
7. Maonero Eramangwana
PET inoramba ichitungamira pakurongedza kwekushandisa kamwe chete uku ichiwedzera kushandiswa kwenguva refu kuburikidza ne:
- Tekinoroji dzakavandudzwa dzekudzivirira (SiO₂ coatings, multilayer)
- Zvivakwa zvepamusoro zvekudzokorodza (PET inodzokorodzwa nemakemikari)
- Kugadziriswa kwekushanda (nano-composites, impact modifiers)
Nekuenzana kwayo kwakasiyana kwekushanda, kugona kugadzikisa uye kugona kudzokorodza, PET inoramba ichikosha muhupfumi hwepasi rose hwepurasitiki uku ichichinja kuenda kumamodeli ekugadzira akatenderera.
Nguva yekutumira: Chikunguru-21-2025