Kusiyana pakati pa ETFE ndi PTFE zipangizo
ETFE (ethylene-tetrafluoroethylene copolymer) ndi PTFE (polytetrafluoroethylene) ndi ma fluoroplastics awiri omwe amagwira ntchito kwambiri, amasiyana kwambiri ndi kapangidwe ka mankhwala, makina amakina, mawonekedwe opangira, komanso kagwiritsidwe ntchito. ETFE, posamalira PTFE's kwambiri mankhwala kukana, kwambiri bwino mawotchi mphamvu ndi processing ntchito, koma kutentha kukana ndi m'munsi pang'ono. PTFE, kumbali ina, imadziwika chifukwa cha kutentha kwambiri komanso kukhazikika kwa mankhwala, koma ndizovuta kwambiri kukonza. Zotsatirazi ndikufanizira mwatsatanetsatane kwa awiriwa kuchokera kumagulu angapo.
Kapangidwe ka Chemical and Basic Properties
- PTFE: Polymerized kuchokera ku tetrafluoroethylene monomers, mawonekedwe ake a maselo amatsekedwa kwathunthu ndi maatomu a fluorine. Ili ndi kristalo wokwera kwambiri komanso mphamvu yamphamvu kwambiri yamankhwala, zomwe zimapatsa dzina lakuti "King of Plastics."
- ETFE: Copolymer yosinthika ya ethylene ndi tetrafluoroethylene. Kuyambitsa mayunitsi a ethylene mu unyolo wa maselo kumachepetsa zomwe zili mu fluorine, motero zimapangitsa kuti zikhale zolimba komanso zosinthika, koma kukana kwake kwamankhwala ndikotsika pang'ono PTFE.
Kuyerekeza Katundu Wamakina
- Mphamvu ndi Kulimba: ETFE ili ndi mphamvu yolimba mpaka 50 MPa, kawiri kuposa ya PTFE, ndi kutalika kwa 100% -300%, kusonyeza kukana kwakukulu; PTFE, kumbali ina, ndi yolimba pang'ono koma ili ndi mphamvu yolimbana ndi misozi.
- Coefficient of Friction: Onsewa ali ndi ma coefficients otsika kwambiri, koma PTFE imapereka kukana kwapamwamba kwambiri, pomwe ETFE ndi yoyenera pazinthu zamapangidwe zomwe zimafunikira kulimba kwambiri.
Processing Magwiridwe
- ETFE: Kusungunula-processable (mwachitsanzo, extrusion, jekeseni akamaumba), ndi kutentha otsika akamaumba (240-270 ℃), oyenera kupanga akalumikidzidwa zovuta.
- PTFE: Malo osungunuka kwambiri (327 ℃) ndi kukhuthala kwamphamvu kwambiri, kupangitsa kusungunuka; Nthawi zambiri amakonzedwa pogwiritsa ntchito sintering kapena kukanikiza, zomwe zimapangitsa kuti pakhale mtengo wokwera kwambiri.
