Kodi Ptfe ndi chiyani?
Polytetrafluoroethylene (PTFE) ndi fluoropolymer yopangidwa ndi tetrafluoroethylene ndipo ndi PFAS yomwe imagwiritsa ntchito zinthu zambiri. Kukana kwa PTFE kwa mankhwala, kutentha, chinyezi, ndi magetsi kumapangitsa kuti ikhale chinthu chabwino kwambiri nthawi iliyonse pamene zinthu, zida, ndi zigawo zake zikufunika kukhala zolimba komanso zodalirika ngakhale mu ntchito zovuta kwambiri. Kuphatikiza apo, PTFE ili ndi kulimba kwapadera kwa kutentha kochepa komanso kukana moto zomwe zimapangitsa kuti ikhale chisankho chabwino pa mndandanda wazinthu, zigawo, ndi ntchito zomwe zikuchulukirachulukira.
PVC ndi chiyani?
PVCndi polima yachitatu yopangidwa kwambiri padziko lonse lapansi yopangidwa ndi pulasitiki (pambuyo pa polyethylene ndi polypropylene). Pafupifupi matani 40 miliyoni a PVC amapangidwa chaka chilichonse.
PVC imabwera mu mawonekedwe olimba (nthawi zina amafupikitsidwa kuti RPVC) komanso osinthasintha. PVC yolimba imagwiritsidwa ntchito popanga mapaipi, zitseko ndi mawindo. Imagwiritsidwanso ntchito popanga mabotolo apulasitiki, ma phukusi, ndi makadi akubanki kapena umembala. Kuwonjezera mapulasitiki kumapangitsa PVC kukhala yofewa komanso yosinthasintha. Imagwiritsidwa ntchito mu mapaipi, kutchinjiriza chingwe chamagetsi, pansi, zikwangwani, zolemba za galamafoni, zinthu zopumira, komanso m'malo mwa rabara. Ndi thonje kapena nsalu, imagwiritsidwa ntchito popanga nsalu.
Kuyerekeza kwa PVC ndi PTFE Physical Properties
| Dzina la Katundu | Mayunitsi | Aluminiyamu wa ABS/PVC | PTFE Yodzazidwa |
| Mphamvu Yotentha Yapadera | BTU/lb-°F | 0.382 |
|
| Shear Modulus | ksi |
|
|
| Mphamvu Yokweza Yokakamiza | psi | 3050 | 5710 |
| Chiŵerengero cha Poisson |
|
|
|
| Dielectric Constant |
| 3.3 | 3.7 |
| Mphamvu ya Dielectric | kV/mu | 508 | 467 |
| Kutalika pa nthawi yopuma | % | 100 | 9.4 |
| Mphamvu Yowonjezera Yosinthasintha | psi | 7030 | 9820 |
| Modulus ya Elasticity | ksi | 319 | 348 |
| Kuuma, Rockwell R |
| 88 | 110 |
| Mphamvu Yolimba, Yopambana | psi | 4030 | 6580 |
| Mphamvu Yokoka, Kupereka | psi | 5420 | 8270 |
| Kukana kwa Magetsi | ohm-cm | 1.00e+14 | 3.00e+15 |
| Kuchulukana | lb/mu³ | 0.0423 | 0.0531 |
| Kutentha Kwambiri kwa Utumiki, Mpweya | °F | 170 | 212 |
| Kutentha kwa Matenthedwe | BTU-in/hr-ft²-°F | 1.87 | 1.67 |
| Kulimba kwa Kusweka | ksi-in½ |
|
Kuno ku Besteflon ndife akatswiri popereka mayankho atsopano a PTFE pa ntchito zanu zaukadaulo. Kuti mudziwe zambiri za Zogulitsa zathu za PTFE, musazengereze kulankhulana nafe!
Nthawi yotumizira: Ogasiti-28-2023