He aha ka Ptfe?
Polytetrafluoroethylene (PTFE) he fluoropolymer synthetic o tetrafluoroethylene a he PFAS ka nui o nā noi.ʻO ka PTFE koʻikoʻi kemika, ka mahana, ka makū, a me nā pale uila e lilo ia i mea kūpono i nā manawa a pau e pono ai nā huahana, nā mea hana, a me nā ʻāpana e paʻa a hilinaʻi ʻia i nā noi ikaika loa.Ma luna o kēia, ke hoʻokiʻekiʻe nei ʻo PTFE i ka lōʻihi haʻahaʻa haʻahaʻa haʻahaʻa a me ke kūpaʻa ahi e koho maikaʻi ai no kahi 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 honua i hana nui ʻia i ka polymer synthetic o ka plastic (ma hope o ka polyethylene a me ka polypropylene). Ma kahi o 40 miliona mau tona o PVC i hana ʻia i kēlā me kēia makahiki.
Hele mai ʻo PVC ma nā ʻano ʻoʻoleʻa (i kekahi manawa pōkole ʻo RPVC) a me nā ʻano maʻalahi.Hoʻohana ʻia ʻo PVC paʻa i ke kūkulu ʻana no ka paipu, nā puka a me nā puka makani.Hoʻohana ʻia ia i ka hana ʻana i nā ʻōmole plastik, ʻeke, a me nā kāleka a i ʻole nā kāleka lālā.ʻO ka hoʻohui ʻana i nā plasticizer e ʻoi aku ka palupalu a me ka maʻalahi o ka PVC.Hoʻohana ʻia ia i ka paipu, ka uila uila, ka papahele, ka hōʻailona, nā moʻolelo phonograph, nā huahana inflatable, a me nā mea pani.Me ka pulupulu a i ʻole ke olonā, hoʻohana ʻia ia i ka hana ʻana i ke kāwele.
Hoʻohālikelike o PVC a me PTFE Nā Pono Kino
| Inoa Waiwai | Nā ʻāpana | ABS/PVC Alloy | Piha PTFE |
| Kaha Wela Kūikawā | BTU/lb-°F | 0.382 |
|
| ʻO ka hoʻoheheʻe ʻana | ksi |
|
|
| ʻO ka ikaika o ka hoʻoulu ʻana | psi | 3050 | 5710 |
| Ka ratio o Poisson |
|
|
|
| Dielectric mau |
| 3.3 | 3.7 |
| Ka ikaika dielectric | kV/in | 508 | 467 |
| Elongation ma ka Haka | % | 100 | 9.4 |
| ʻO ka ikaika o ka hāʻawi ʻana | psi | 7030 | 9820 |
| Modulus o Elasticity | ksi | 319 | 348 |
| ʻO Hardness, ʻo Rockwell R |
| 88 | 110 |
| Ikaika U'i, Loa | psi | 4030 | 6580 |
| Ikaika U'i, Hua | psi | 5420 | 8270 |
| Kū'ē Uila | ohm-cm | 1.00e+14 | 3.00e+15 |
| ʻO ka mānoanoa | lb/in³ | 0.0423 | 0.0531 |
| Max Service Mahana, Ea | °F | 170 | 212 |
| ʻO ka hoʻoili wela | BTU-i/hr-ft²-°F | 1.87 | 1.67 |
| ʻOoleʻa Haʻihaʻi | ksi-in½ |
|
Eia ma Besteflon he loea mākou i ka hāʻawi ʻana i nā ʻōnaehana PTFE hou no kāu mau noi ʻenehana.No ka ʻike hou aku e pili ana i kā mākou huahana PTFE, e ʻoluʻolu e kelepona iā mākou!
Ka manawa hoʻouna: ʻAukake-28-2023