Sezvo Dupont yakatanga kugadzira PTFE muna 1945, pave nemakore makumi matanhatu nerimwe kubvira.Iye zvino sechigadzirwa chakakosha chePTFEPTFE microporous firimuinoshandiswa zvakanyanya, kuwedzera munda kubva kubiological engineering kuenda kuindasitiri yezvipfeko, kubva kuindasitiri yemakanika kuenda kune petrochemical, muindasitiri yekudzivirira kwezvakatipoteredza inogona kushandiswa kwete chete kumapurojekiti ekurapa mvura, asiwo kucheneswa kwemhepo.Zvinogona kutaurwa kuti huwandu hwayo hwekushandisa huchiri hwakafara.
Hunhu hwe polytetrafluoroethylene
1. Molecular structure maitiro
2. Kugadzikana kwemakemikari
3. Thermal properties
4. Mechanical properties
5. Zvinhu zvemagetsi
6. Nzvimbo dzepamusoro
Kuvandudzwa kwePTFE microporous film
Parizvino, nzira yekugadzira yePTFE microporous firimuine calendering firimu nzira, kushandura firimu nzira uye kutambanudza firimu nzira.Stretch firimu nzira inogona kukamurwa kuita imwe-nzira kutambanudza uye maviri-nzira kutambanudza, kuburikidza nekuongorora zvimiro uye kuyerwa chaiko, nzira mbiri chete dzakatambanudza firimu rine yakanaka microporous chimiro.Iyo yekugadzira maitiro e biaxially oriented PTFE microporous firimu inoratidzwa mumufananidzo.
Kushandiswa kwePTFE microporous film
1. Kushandisa mune zvekusefa zvinhu
2. Kushandiswa mune zvekurapa zvinhu
Kugadzirira kwePTFE firimu
1. Pre-process yePTFE microporous film
2. Kugadzirira nzira
3. Nzira yekugadzira
Pesvedzero yeanoshanda paramita pane zvivakwa zvePTFE mafirimu
Izvo zvinhu zvinokurudzira maitiro ePTFE microporous films mu biaxial stretching process uye pre-process yayo yakaoma uye yakawanda.Pamusoro pekuita kwechigadzirwa chekugadzirisa, kutambanudza tembiricha uye kutambanudza mwero, zvimwe zvinofurira zvinhu ndezvi: tembiricha yekushanda, humidity yekushandisa.
Kushanda tembiricha: PTFE mafirimu anonyanya kunzwa tembiricha, uye akasiyana tembiricha ekushanda anogona kukonzera akasiyana firimu zvimiro.Tembiricha yakakosha inoshanda parameter kwete chete mukutambanudza maitiro, asiwo muPTFE resin kugadzirisa uye epakati maitiro.
Kushanda Humidity: Humidity inotsamira tembiricha uye haigone kukurukurwa pasina tembiricha.Ambient humidity inewo mhedzisiro pafirimu.
PTFE ine yakatanhamara kugadzikana kwemakemikari, yakanakisa uye yakaderera tembiricha kuita uye kusaora kwemarara, uye inoshandiswa zvakanyanya mumakemikari, peturu, machira, emagetsi uye emuchina maindasitiri.Zvichakadaro, iyo yakasimba hydrophobic uye porous properties yePTFE inoita kuti ive yakanakira membrane zvinhu zvekugadzirira zvisingapindi mvura uye zvinofema machira machira pamwe ne membrane distillation uye membrane contactors.Zvichienzaniswa nezvimwe zvinhu zvemembrane, ePTFE membrane ndiyo chete membrane inogona kushandiswa yakagadzikana kwenguva yakareba nehukuru hwekutamisa coefficient, uye zvakanakira diki diki, yakasimba yekuzvitsigira kugona uye yakakwirira kurodha density yehollow fiber membranes inogadzira. PTFE hollow fiber membranes inokwezva kutarisisa zvakanyanya mumunda we membrane contactors.
Porous PTFE hollow fiber membranes inogadzirirwa ne extrusion-drawing nzira, uye maitiro ekugadzirira anosanganisira kusanganisa, extrusion spinning, unidirectional kutambanudza uye sintering.Iyo yakazara yakasanganiswa PTFE zvinhu inofanodzvanywa pamuchina usina chinhu kuita cylindrical isina chinhu.Iwo ma blanks akafanodzvanywa anowedzerwa uye anorukwa pa40-100°C.Mushure mekudzikisa, kupisa-kuseta kuti uwane PTFE hollow fiber membrane.Kupisa kwekushisa kunosvika 200-340 ° C, kupisa kwekushisa kwekushisa ndeye 330-400 ° C, uye nguva yekupisa ndeye 45-500 s.Iyo microscopic fomu iine denderedzwa (elliptical kana denderedzwa) pore chimiro.
Nguva yekutumira: Jan-18-2022