1. Gabatarwa
Polyethylene terephthalate (PET) yana ɗaya daga cikin mafi yawan amfani da thermoplastics a duniya. A matsayin kayan farko na kwalabe na abin sha, marufi na abinci, da filaye na roba, PET yana haɗa kyawawan kaddarorin jiki tare da sake yin amfani da su. Wannan labarin yana nazarin mahimman halayen PET, hanyoyin sarrafawa, da aikace-aikace iri-iri a cikin masana'antu.
2. Abubuwan Kaya
Abubuwan Jiki & Injiniya
- Babban Ƙarfi-zuwa-Nauyi Ratio: Ƙarfin ƙwanƙwasa na 55-75 MPa
- Tsafta:> 90% watsa haske (maki crystalline)
- Abubuwan Kaya: Kyakkyawan juriya na CO₂/O₂ (an inganta su tare da sutura)
- Juriya na thermal: Ana iya aiki har zuwa 70°C (150°F) ci gaba
- Girma: 1.38-1.40 g/cm³ (amorphous), 1.43 g/cm³ (crystalline)
Juriya na Chemical
- Kyakkyawan juriya ga ruwa, barasa, mai
- Matsakaicin juriya ga raunin acid / tushe
- Rashin juriya ga alkalis mai ƙarfi, wasu kaushi
Bayanan Muhalli
- Lambar sake amfani da su: #1
- Hadarin Hydrolysis: Rage raguwa a babban yanayin zafi/pH
- Maimaituwa: Ana iya sake sarrafa shi sau 7-10 ba tare da babban asarar dukiya ba
3. Hanyoyin sarrafawa
| Hanya | Aikace-aikace na yau da kullun | Mahimmin La'akari |
|---|---|---|
| Ƙwararren Ƙarƙashin Ƙarƙashin Ƙarƙashin Ƙarƙashin Ƙarƙashin Ƙarƙashin Ƙarƙwara | kwalaben abin sha | Tsarin biaxial yana inganta ƙarfi |
| Extrusion | Fina-finai, zanen gado | Yana buƙatar saurin sanyaya don tsabta |
| Fiber Kadi | Textiles (polyester) | Matsakaicin zafin jiki na 280-300 ° C |
| Thermoforming | Kayan abinci | Pre-bushewa mai mahimmanci (≤50 ppm danshi) |
4. Manyan Aikace-aikace
Marufi (73% na buƙatun duniya)
- Gilashin Abin Sha: Raka'a biliyan 500 a kowace shekara
- Kwantenan Abinci: Tireshin Microwavable, Salatin Clamshells
- Pharmaceutical: Fakitin blister, kwalaben magani
Textiles (22% bukata)
- Polyester Fiber: Tufafi, Tufafi
- Kayan fasaha na fasaha: bel ɗin wurin zama, bel ɗin jigilar kaya
- Nonwovens: Geotextiles, kafofin watsa labarai na tacewa
Amfani masu tasowa (5% amma girma)
- 3D Buga: Filaye masu ƙarfi
- Electronics: Insulating fina-finai, capacitor sassa
- Sabunta Makamashi: Taswirar bangon hasken rana
5. Ci gaban Dorewa
Sake amfani da Fasaha
- Sake yin amfani da injina (90% na PET da aka sake yin fa'ida)
- Wanke-flake-narke tsari
- Matsayin abinci yana buƙatar babban tsafta
- Sake amfani da sinadarai
- Glycolysis/depolymerization zuwa monomers
- Hanyoyin enzymatic masu tasowa
PET-Based
- 30% abubuwan da aka samo asali na MEG
- Fasahar Coca-Cola's PlantBottle™
- Farashin yanzu: 20-25%
6. Kwatanta da Alternative Plastics
| Dukiya | PET | HDPE | PP | PLA |
|---|---|---|---|---|
| Tsaratarwa | Madalla | Opaque | Translucent | Yayi kyau |
| Max Yi amfani da Temp | 70°C | 80°C | 100°C | 55°C |
| Oxygen Barrier | Yayi kyau | Talakawa | Matsakaici | Talakawa |
| Yawan sake amfani da su | 57% | 30% | 15% | <5% |
7. Mahimmanci na gaba
PET ta ci gaba da mamaye fakitin amfani guda ɗaya yayin da take faɗaɗa zuwa aikace-aikace masu ɗorewa ta hanyar:
- Ingantattun fasahar shinge (SiO₂ coatings, multilayer)
- Babban kayan aikin sake yin amfani da su (PET da aka sake yin amfani da su ta sinadarai)
- gyare-gyaren ayyuka (nano-composites, masu gyara tasiri)
Tare da ma'auni na musamman na aikinta, iya aiki da sake yin amfani da su, PET ya kasance ba makawa a cikin tattalin arzikin robobi na duniya yayin da yake canzawa zuwa ƙirar samar da madauwari.
Lokacin aikawa: Yuli-21-2025