Kusiyana pakati peETFE ne PTFE zvinhu
ETFE (ethylene-tetrafluoroethylene copolymer) uye PTFE (polytetrafluoroethylene) maviri epamusoro-inoshanda fluoroplastics, akasiyana zvakanyanya muchimiro chemakemikari, mashandiro emuchina, maitiro ekugadzirisa, uye mashandisirwo. ETFE, tichichengeta PTFE's yakanakisa makemikari kuramba, zvakanyanya kunatsiridza simba remagetsi uye mashandiro ekugadzirisa, asi kushomeka kwayo kwekushisa kwakadzikira zvishoma. PTFE, kune rumwe rutivi, inozivikanwa nekunyanya kupisa kwekushisa uye kugadzikana kwemakemikari, asi yakanyanya kuoma kugadzirisa. Izvi zvinotevera kuenzanisa kwakadzama kwezviviri kubva pamaonero akawanda.
Kemikari Mamiriro uye Basic Properties
- PTFE: Polymerized kubva kune tetrafluoroethylene monomers, chimiro chayo chema molecular chakavharwa zvachose nemaatomu efluorine. Iyo ine yakakwira crystallinity uye yakanyanya kusimba makemikari inertness, ichiwana iyo zita rekuti "Mambo wePlastiki."
- ETFE: Alternating copolymer ye ethylene uye tetrafluoroethylene. Kuunzwa kweethylene zvikamu muketani yemamorekuru kunoderedza iyo fluorine yemukati, nekudaro inovandudza kuoma uye kurongeka, asi kupikisa kwayo kemikari kwakaderera zvishoma kune. PTFE.
Mechanical Properties Kuenzanisa
- Simba uye Kuoma: ETFE inozvirumbidza nesimba rinosvika ku50 MPa, kaviri iyo ye PTFE, uye kureba kwe100% -300%, ichiratidza zvakanakisa kukanganisa kuramba; PTFE, kune rumwe rutivi, haina brittle asi ine yakanyanya kusada kubvarura.
- Coefficient of Friction: Ose ane akanyanya kuderera coefficients yekukakavadzana, asi PTFE inopa kukwirira kupfeka kuramba, nepo ETFE ichinyanya kukodzera kune zvimiro zvemukati zvinoda kuomarara kwakanyanya.
Processing Performance
- ETFE: Melt-processable (semuenzaniso, extrusion, jekiseni molding), ine yakaderera kuumbwa tembiricha (240-270 ℃), yakakodzera kugadzira yakaoma maumbirwo.
- PTFE: High melting point (327 ℃) uye yakanyanya kunyunguduka viscosity, ichiita kunyungudika-kugadziriswa; inowanzogadziriswa uchishandisa sintering kana kudzvanya maitiro, zvichikonzera kukwira kwemitengo.
