1. Kev Taw Qhia
Polyethylene terephthalate (PET) yog ib qho ntawm cov thermoplastics uas siv tau ntau yam thiab siv dav tshaj plaws hauv ntiaj teb. Raws li cov khoom siv tseem ceeb rau cov fwj dej haus, cov khoom ntim khoom noj, thiab cov fibers hluavtaws, PET muab cov khoom zoo heev nrog kev siv rov qab. Tsab xov xwm no tshuaj xyuas PET cov yam ntxwv tseem ceeb, cov txheej txheem ua, thiab ntau yam kev siv thoob plaws hauv kev lag luam.
2. Cov Khoom Siv
Cov Khoom Siv Lub Cev & Lub Tshuab
- Lub zog siab rau qhov hnyav piv: Lub zog tensile ntawm 55-75 MPa
- Kev Pom Tseeb: > 90% kev kis tau lub teeb (cov qib crystalline)
- Cov Khoom Tiv Thaiv: Kev tiv thaiv CO₂/O₂ zoo (txhim kho nrog cov txheej txheej)
- Kev Tiv Thaiv Kub: Ua haujlwm tau txog li 70 ° C (150 ° F) tas mus li
- Qhov Ceev: 1.38-1.40 g/cm³ (amorphous), 1.43 g/cm³ (crystalline)
Kev Tiv Thaiv Tshuaj
- Zoo heev tsis kam rau dej, cawv, roj
- Kev tiv thaiv nruab nrab rau cov kua qaub / cov hauv paus tsis muaj zog
- Tsis kam rau cov alkalis muaj zog, qee cov kuab tshuaj
Cov Ntaub Ntawv Ib puag ncig
- Cov Cai Rov Siv Dua: #1
- Kev Pheej Hmoo Hydrolysis: Degrades ntawm qhov kub siab / pH
- Kev Siv Rov Qab Tau: Siv tau rov ua dua 7-10 zaug yam tsis muaj kev poob khoom loj
3. Cov Txheej Txheem Ua Haujlwm
| Txoj Kev | Cov Ntawv Thov Ib Txwm Muaj | Cov Kev Xav Tseem Ceeb |
|---|---|---|
| Kev Txhaj Tshuaj Ncab Tshuab Moulding | Cov fwj dej haus | Kev taw qhia Biaxial txhim kho lub zog |
| Kev rho tawm | Cov yeeb yaj kiab, cov ntawv | Yuav tsum tau txias sai rau qhov meej |
| Kev Tig Fiber | Cov ntaub (polyester) | Kev sib hloov ceev ceev ntawm 280-300 ° C |
| Thermoforming | Cov tais zaub mov | Qhov tseem ceeb ua ntej ziab (≤50 ppm noo noo) |
4. Cov Ntawv Thov Tseem Ceeb
Kev Ntim Khoom (73% ntawm kev thov thoob ntiaj teb)
- Cov fwj dej haus: 500 billion units txhua xyoo
- Cov Thawv Khoom Noj: Cov tais uas siv tau rau hauv lub tshuab ua kom sov sov, cov tais zaub xas lav clamshells
- Tshuaj: Cov pob khoom blister, cov fwj tshuaj
Cov ntaub (22% kev thov)
- Polyester Fiber: Khaub ncaws, upholstery
- Cov Ntaub Ntawv Txuj Ci: Siv sia, siv txoj siv conveyor
- Cov Khoom Uas Tsis Yog Npuag: Geotextiles, cov khoom siv lim dej
Kev siv tshiab (5% tab sis loj hlob tuaj)
- 3D Luam Ntawv: Cov filaments muaj zog heev
- Cov Khoom Siv Hluav Taws Xob: Cov yeeb yaj kiab rwb thaiv tsev, cov khoom siv capacitor
- Lub Zog Rov Ua Dua Tshiab: Cov ntawv qhia hnub ci vaj huam sib luag
5. Kev Txhim Kho Kev Ruaj Ntseg
Cov Txuj Ci Rov Siv Dua
- Kev Siv Dua Tshiab (90% ntawm PET rov ua dua tshiab)
- Cov txheej txheem ntxuav-flake-yaj
- Qib khoom noj yuav tsum tau ntxuav kom huv si
- Kev Siv Tshuaj Rov Qab
- Glycolysis/depolymerization rau monomers
- Cov txheej txheem enzymatic tshiab
PET uas siv tau rau hauv lub cev
- 30% cov khoom MEG uas tau los ntawm cov nroj tsuag
- Coca-Cola lub PlantBottle™ thev naus laus zis
- Tus nqi them tam sim no: 20-25%
6. Kev Sib Piv Nrog Lwm Cov Yas
| Vaj tse | Tus tsiaj | HDPE | PP | PLA |
|---|---|---|---|---|
| Kev meej meej | Zoo heev | Tsis pom tseeb | Pob tshab | Zoo |
| Siv Kub Tshaj Plaws | 70°C | 80°C | 100°C | 55°C |
| Cov Pa Pa Tawm | Zoo | Txom nyem | Nruab nrab | Txom nyem |
| Tus Nqi Rov Siv Dua | 57% | 30% | 15% | <5% |
7. Kev Cia Siab Yav Tom Ntej
PET tseem niaj hnub tswj hwm cov ntim khoom siv ib zaug xwb thaum nthuav dav mus rau hauv cov ntawv thov ruaj khov los ntawm:
- Cov thev naus laus zis tiv thaiv zoo dua (SiO₂ txheej, ntau txheej)
- Cov chaw siv rov ua dua tshiab (PET uas siv tshuaj lom neeg rov ua dua tshiab)
- Kev hloov kho kev ua tau zoo (nano-composites, impact modifiers)
Nrog nws qhov sib npaug tshwj xeeb ntawm kev ua tau zoo, kev ua tiav thiab kev siv rov qab tau, PET tseem yog qhov tseem ceeb hauv kev lag luam yas thoob ntiaj teb thaum hloov mus rau cov qauv tsim khoom voj voog.
Lub sijhawm tshaj tawm: Lub Xya Hli-21-2025