1. Hoʻolauna
ʻO Polyethylene terephthalate (PET) kekahi o nā thermoplastics maʻalahi loa a hoʻohana nui ʻia o ka honua. Ma ke ʻano he mea nui no nā ʻōmole inu, nā ʻōpala meaʻai, a me nā olonā synthetic, hoʻohui ʻo PET i nā waiwai kino maikaʻi loa me ka hiki ke hana hou ʻia. Nānā kēia ʻatikala i nā ʻano koʻikoʻi o PET, nā ʻano hana, a me nā noi like ʻole ma nā ʻoihana.
2. Nā Waiwai Mea
Nā Waiwai Kino a me nā Waiwai Mekanika
- Ka Lākiō Ikaika-a-Kaumaha Kiʻekiʻe: Ikaika tensile o 55-75 MPa
- ʻIke maopopo: >90% ka hoʻoili ʻana o ka mālamalama (nā pae crystalline)
- Nā Waiwai Pale: Ke kūpaʻa maikaʻi ʻana o CO₂/O₂ (hoʻonui ʻia me nā uhi)
- Ke Kū'ē Wela: Hiki ke lawelawe a hiki i ka 70°C (150°F) mau
- Ka nui o ke kinoea: 1.38-1.40 g/cm³ (ʻamorphous), 1.43 g/cm³ (crystalline)
Ke kū'ē kemika
- ʻO ke kūpaʻa maikaʻi loa i ka wai, nā ʻona, nā aila
- Ke kūpaʻa kūpono i nā waikawa/kumu nāwaliwali
- ʻO ke kūpaʻa haʻahaʻa i nā alkalis ikaika, kekahi mau mea hoʻoheheʻe
ʻIkepili Kaiapuni
- Kōmike Hoʻopōʻaiapuni: #1
- Ka Pōpilikia Hydrolysis: Hoʻohaʻahaʻa i nā mahana kiʻekiʻe/pH
- Hana hou ʻia: Hiki ke hana hou ʻia i 7-10 mau manawa me ka ʻole o ka pohō nui o ka waiwai
3. Nā ʻAno Hana Hana
| ʻAno hana | Nā Hoʻohana Maʻamau | Nā Manaʻo Koʻikoʻi |
|---|---|---|
| Hoʻoheheʻe ʻana i ka hoʻoheheʻe ʻana i ka inikini | Nā ʻōmole inu | Hoʻonui ka hoʻonohonoho Biaxial i ka ikaika |
| Hoʻopuka ʻana | Nā kiʻiʻoniʻoni, nā pepa | Pono ka hoʻomaʻalili wikiwiki no ka moakāka |
| Ka milo ʻana o ka fiber | Nā lole (polyester) | Ka wili wikiwiki ma 280-300°C |
| Hoʻokumu ʻana i ka wela | Nā pā meaʻai | Pono ka hoʻomaloʻo mua ʻana (≤50 ppm makū) |
4. Nā Noi Nui
Ka hoʻopili ʻana (73% o ke koi honua)
- Nā ʻōmole inu: 500 biliona mau ʻāpana i kēlā me kēia makahiki
- Nā Pahu Meaʻai: Nā pā microwave, nā pūpū salakeke
- Lāʻau lapaʻau: Nā ʻeke blister, nā ʻōmole lāʻau lapaʻau
Nā lole (22% koi)
- ʻO ke kaula polyester: Nā lole, nā mea hoʻonani
- Nā lole loea: Nā kāʻei noho, nā kāʻei conveyor
- Nā mea i ulana ʻole ʻia: Geotextiles, mea kānana
Nā Hoʻohana Hou (5% akā e ulu ana)
- Paʻi 3D: Nā filament ikaika kiʻekiʻe
- Nā mea uila: Nā kiʻiʻoniʻoni hoʻokaʻawale, nā ʻāpana capacitor
- Ikehu Hoʻohou: Nā pepa hope o ka panela lā
5. Nā Holomua Hoʻomau
Nā ʻenehana hana hou
- Hana Hou ʻana o ka Mekanika (90% o ka PET hana hou ʻia)
- Kaʻina hana holoi-ʻōpala-hoʻoheheʻe
- Pono ka hoʻomaʻemaʻe nui no ka papa meaʻai
- Hoʻopōʻaiapuni Kemika
- ʻO Glycolysis/depolymerization i nā monomers
- Nā kaʻina hana enzymatic e kū mai ana
PET i hoʻokumu ʻia i ka Bio
- 30% nā ʻāpana MEG i loaʻa mai nā mea kanu
- ʻO ka ʻenehana PlantBottle™ a Coca-Cola
- Ka uku kumukūʻai o kēia manawa: 20-25%
6. Hoʻohālikelike me nā Plastics ʻē aʻe
| Waiwai | PET | HDPE | PP | PLA |
|---|---|---|---|---|
| Ka moakāka | Maikaʻi loa | ʻOpaque | Moakaka | Maikaʻi loa |
| Mahana Hoʻohana Loa | 70°C | 80°C | 100°C | 55°C |
| Pale ʻokikene | Maikaʻi loa | ʻilihune | Waena | ʻilihune |
| Ka helu hana hou ʻana | 57% | 30% | 15% | <5% |
7. Nānā i ka Wā e Hiki Mai Ana
Ke hoʻomau nei ʻo PET i ka hoʻomalu ʻana i nā ʻōpala hoʻokahi hoʻohana ʻoiai e hoʻonui ana i nā noi paʻa ma o:
- Nā ʻenehana pale i hoʻonui ʻia (nā uhi SiO₂, multilayer)
- ʻOihana hana hou holomua (PET hana hou ʻia me nā kemika)
- Nā hoʻololi hana (nano-composites, nā mea hoʻololi hopena)
Me kona kaulike kū hoʻokahi o ka hana, ka hiki ke hana ʻia a me ka hana hou ʻana, noho nui ʻo PET i ka hoʻokele waiwai plastik honua i ka wā e neʻe ana i nā hiʻohiʻona hana pōʻai.
Ka manawa hoʻouna: Iulai-21-2025