1. Okwu mmalite
Polyethylene terephthalate (PET) bụ otu n'ime ihe ọkụ ọkụ ọkụ na-agbanwe agbanwe na nke a na-ejikarị eme ihe. Dị ka ihe bụ isi maka karama ihe ọṅụṅụ, nkwakọ nri, na fibers sịntetik, PET na-ejikọta ọmarịcha anụ ahụ na nrụgharị. Edemede a na-enyocha njirimara isi PET, ụzọ nhazi na ngwa dị iche iche n'ofe ụlọ ọrụ.
2. Ihe onwunwe
Njirimara anụ ahụ & Mechanical
- Oke Ike-na-Arọ Ratio: Ịkwụsị ike nke 55-75 MPa
- Ndozi:>90% nnyefe ọkụ (ọkara kristal)
- Ihe mgbochi: ezigbo nguzogide CO₂/O₂ (emelitere ya na mkpuchi)
- Nguzogide okpomọkụ: Enwere ike ịrụ ọrụ ruo 70°C (150°F) na-aga n'ihu
- Njupụta: 1.38-1.40 g/cm³ (amorphous), 1.43 g/cm³ (crystalline)
Nguzogide kemịkalụ
- Ezigbo iguzogide mmiri, alcohols, mmanụ
- Nguzogide adịghị oke na acid/bases adịghị ike
- Nguzogide na-adịghị mma na alkalis siri ike, ụfọdụ ihe mgbaze
Profaịlụ gburugburu
- Koodu imegharịgharị: #1
- Ihe ize ndụ Hydrolysis: Na-eweda na elu okpomọkụ/pH
- Ntughari: Enwere ike megharịa ugboro 7-10 na-enweghị nnukwu mfu ihe onwunwe
3. Usoro nhazi
| Usoro | Ngwa a na-ahụkarị | Isi Ntụle |
|---|---|---|
| Ịkpụzi ịgbatị ịgbatị injection | Karama ihe ọṅụṅụ | Ntuzi aka biaxial na-eme ka ike dịkwuo mma |
| Extrusion | Ihe nkiri, mpempe akwụkwọ | Na-achọ ngwa ngwa jụrụ oyi maka idoanya |
| Fiber na-agbagharị | Akwa akwa (polyester) | Igwe ọkụ na-agba ọsọ na 280-300 ° C |
| Thermoforming | Ebe nri nri | Ọ dị mkpa tupu ihicha (mmiri ≤50 ppm) |
4. Isi Ngwa
Nkwakọ ngwaahịa (73% nke ihe achọrọ zuru ụwa ọnụ)
- Mpempe mmiri ọṅụṅụ: ijeri nkeji 500 kwa afọ
- Nri nri: trays Microwavable, salad clamshells
- Ọgwụ: ngwugwu ọnya, karama ọgwụ
Akwa (22% chọrọ)
- Polyester Fiber: akwa, akwa akwa
- Nka na ụzụ akwa: oche oche, eriri ebu
- Nonwovens: Geotextiles, mgbasa ozi nzacha
Ojiji na-apụta (5% mana na-eto eto)
- Mbipụta 3D: filaments dị ike
- Eletrọnịkị: ihe nkiri mkpuchi, ihe ndị na-emepụta ihe
- Ike emeghari ohuru: mpempe akwụkwọ azụ azụ nke anyanwụ
5. Ọganihu na-adịgide adịgide
Teknụzụ imegharị ihe
- Mechanical Recycling (90% nke PET megharịrị)
- Usoro ịsa-flake-agbaze
- Nri-ọkwa chọrọ ịdị ọcha nke ukwuu
- Nrụgharị kemịkalụ
- Glycolysis/depolymerization na monomers
- Usoro enzymatic na-apụta
PET dabere na bio
- Ihe mejupụtara MEG sitere na 30% osisi
- Teknụzụ Coca-Cola's PlantBottle™
- Ọnụ ego dị ugbu a: 20-25%
6. Tụnyere Plastic Alternative
| Ngwongwo | PET | HDPE | PP | PLA |
|---|---|---|---|---|
| Ido anya | Magburu onwe | Opekempe | translucent | Ọ dị mma |
| Oke Okpomọkụ Jiri | 70°C | 80°C | 100°C | 55°C |
| Ihe mgbochi oxygen | Ọ dị mma | Ogbenye | Na-agafeghị oke | Ogbenye |
| Ọnụego imegharị ihe | 57% | 30% | 15% | <5% |
7. Ọdịnihu Outlook
PET na-aga n'ihu na-achịkwa nkwakọ ngwaahịa otu ebe na-agbasawanye na ngwa na-adịgide adịgide site na:
- Teknụzụ mgbochi emelitere (nkpuchi SiO₂, multilayer)
- Akụrụngwa imegharị ihe dị elu (PET emegharịrị na kemịkal)
- Mgbanwe arụmọrụ (nano-composites, mmetụta mgbanwe mgbanwe)
Site na nguzozi pụrụ iche nke arụmọrụ ya, nhazi na nrụgharịgharị ya, PET ka bụ ihe dị mkpa na akụ na ụba rọba ụwa mgbe ọ na-aga n'ihu na ụdị mmepụta okirikiri.
Oge nzipu: Jul-21-2025