He aha ka Ptfe?
ʻO Polytetrafluoroethylene (PTFE) he fluoropolymer synthetic o tetrafluoroethylene a he PFAS ia he nui nā noi. ʻO ke kūpaʻa kemika, ka mahana, ka makū, a me ka uila koʻikoʻi o ka PTFE e lilo ia i mea kūpono i nā wā a pau e pono ai nā huahana, nā mea hana, a me nā ʻāpana e paʻa a hilinaʻi hoʻi i nā noi paʻakikī loa. Ma luna o kēia, haʻaheo ka PTFE i ke kūpaʻa haʻahaʻa haʻahaʻa a me ke kūpaʻa ahi e lilo ia i koho maikaʻi no ka papa inoa e ulu mau ana o nā huahana, nā ʻāpana, a me nā noi.
He aha ka PVC?
PVCʻo ia ke kolu o ka polymer synthetic plastic i hana nui ʻia ma ka honua (ma hope o ka polyethylene a me ka polypropylene). Ma kahi o 40 miliona tons o PVC i hana ʻia i kēlā me kēia makahiki.
Loaʻa ka PVC i nā ʻano paʻa (i kekahi manawa i hoʻopōkole ʻia ʻo RPVC) a me nā ʻano palupalu. Hoʻohana ʻia ka PVC paʻa i ke kūkulu ʻana no ka paipu, nā puka a me nā puka makani. Hoʻohana ʻia hoʻi ia i ka hana ʻana i nā ʻōmole plastik, nā ʻōpala, a me nā kāleka panakō a i ʻole nā kāleka lālā. ʻO ka hoʻohui ʻana i nā plasticizers e palupalu a ʻoi aku ka palupalu o ka PVC. Hoʻohana ʻia ia i ka plumbing, ka insulation uwea uila, ka papahele, nā hōʻailona, nā moʻolelo phonograph, nā huahana inflatable, a me nā pani rubber. Me ka pulupulu a i ʻole ka olonā, hoʻohana ʻia ia i ka hana ʻana o ka canvas.
Hoʻohālikelike o nā Waiwai Kino PVC a me PTFE
| Inoa Waiwai | Nā ʻĀpana | ʻAla ABS/PVC | Ua hoʻopiha ʻia ʻo PTFE |
| Ka Mana Wela Kūikawā | BTU/lb-°F | 0.382 |
|
| Modulus ʻokiʻoki | ksi |
|
|
| Ka ikaika o ka hoʻoemi ʻana | psi | 3050 | 5710 |
| Ka lakio o Poisson |
|
|
|
| Paʻa Dielectric |
| 3.3 | 3.7 |
| Ikaika Dielectric | kV/ʻīniha | 508 | 467 |
| Elongation i ka wā hoʻomaha | % | 100 | 9.4 |
| Ikaika Hoʻokuʻu Flexural | psi | 7030 | 9820 |
| Modulus o ka Elasticity | ksi | 319 | 348 |
| Paʻakikī, Rockwell R |
| 88 | 110 |
| Ikaika Tensile, Hope Loa | psi | 4030 | 6580 |
| Ikaika Tensile, Hua | psi | 5420 | 8270 |
| Ke kū'ē uila | ohm-cm | 1.00e+14 | 3.00e+15 |
| Ka nui o ka paʻa | lb/in³ | 0.0423 | 0.0531 |
| Mahana Hana Loa, Ea | °F | 170 | 212 |
| Ka Hoʻokele Wela | BTU-i loko/hr-ft²-°F | 1.87 | 1.67 |
| Paʻakikī o ka haki | ksi-in½ |
|
Maanei ma Besteflon he poʻe loea mākou i ka hāʻawi ʻana i nā hopena PTFE hou no kāu mau noi loea. No ka ʻike hou aku e pili ana i kā mākou Huahana PTFE, e ʻoluʻolu e hoʻokaʻaʻike mai iā mākou!
Ka manawa hoʻouna: ʻAukake-28-2023