He aha te Ptfe?
Polytetrafluoroethylene (PTFE) he fluoropolymer hangai o te tetrafluoroethylene, ā, he PFAS he maha ngā whakamahinga. Nā te nui o ngā ātete matū, pāmahana, makuku, me te hiko o te PTFE, he mea tino pai ia ina hiahiatia he pakari, he pono hoki ngā hua, ngā taputapu, me ngā wāhanga ahakoa ngā whakamahinga tino uaua. Hei tāpiri atu ki tēnā, he mea whakahīhī te PTFE ki te pakari pāmahana iti me te ātete ahi, ā, he mea pai tēnei hei whiringa mō te rārangi hua, wāhanga, me ngā whakamahinga e tipu haere tonu ana.
He aha te PVC?
PVCKo te tuatoru o ngā pūhui kirihou hangai e whakaputaina whānuitia ana i te ao (whai muri i te polyethylene me te polypropylene). Tata ki te 40 miriona tana o te PVC e whakaputaina ana i ia tau.
Kei roto i ngā āhua pakari (i ētahi wā ka whakarāpopototia ko te RPVC) me ngā āhua ngāwari te PVC. Ka whakamahia te PVC pakari hei hanga i ngā paipa, ngā tatau me ngā matapihi. Ka whakamahia hoki hei hanga i ngā pounamu kirihou, i ngā takai, me ngā kāri peeke, kāri mema rānei. Mā te tāpiri i ngā mea whakapūmau ka ngawari ake, ka ngāwari ake te PVC. Ka whakamahia i roto i ngā mahi wai, i ngā taura hiko, i ngā papa, i ngā tohu, i ngā rekoata phonograph, i ngā hua pupuhi, me ngā whakakapinga rapa. Me te miro, te rinena rānei, ka whakamahia i roto i te hanga kānawehi.
Te Whakataurite i ngā Āhuatanga Ā-tinana o te PVC me te PTFE
| Ingoa o te Whenua | Ngā Wāhanga | Koranu ABS/PVC | PTFE Whakakīia |
| Te Pūngao Wera Motuhake | BTU/lb-°F | 0.382 |
|
| Te Wāhanga Kutikuti | ksi |
|
|
| Kaha Tukunga Pēhi | psi | 3050 | 5710 |
| Te Ōwehenga a Poisson |
|
|
|
| Pūmau Whakakore Hiko |
| 3.3 | 3.7 |
| Kaha Whakakorehiko | kV/in | 508 | 467 |
| Te Toronga i te Wā Whakamutu | % | 100 | 9.4 |
| Kaha Tukunga Piko | psi | 7030 | 9820 |
| Te Tauwehenga o te Āhuatanga | ksi | 319 | 348 |
| Te mārō, Rockwell R |
| 88 | 110 |
| Kaha Kume, Tino Pai | psi | 4030 | 6580 |
| Kaha Kume, Hua | psi | 5420 | 8270 |
| Ātete Hiko | ohm-cm | 1.00e+14 | 3.00e+15 |
| Kiato | pauna/in³ | 0.0423 | 0.0531 |
| Te pāmahana ratonga mōrahi, te hau | °F | 170 | 212 |
| Te Arahi Wera | BTU-in/hr-ft²-°F | 1.87 | 1.67 |
| Te Pakari o te Whati | ksi-in½ |
|
I konei i Besteflon, he tohunga mātou ki te tuku otinga PTFE auaha mō āu tono hangarau. Mēnā kei te hiahia koe ki te mōhio atu mō ā mātou Hua PTFE, tēnā whakapā mai!
Wā tuku: 28 o Ākuhata-2023