PTFE inoshingirira mumakemikari mukuora kupfuura PVDF kana PE.Iyo yakawanda maatomu eFluorine kumusana, mapuroteni akawanda haakwanise kusungirira pamusoro pemakemikari.
Musiyano mukuru pakati pePTFE nePVDF
| Polymer | PVDF | PTFE |
| Chimiro | –[–CF2–CHF–]n– | –[–CF2–CF2]n– |
| Production Technology | vhuvhuta | kupisa kana kutonhora isostatic kudzvanya uye / kana sintering |
| Kushandiswa kweCatalysts uye / kana Zvimwe Zviwedzere | Cd, Ba, K | Hapana |
| Price | Pakati nepakati | High |
| Density [g/cm3] | 1.8 | 2.1 kusvika 2.3 |
| Kunyungudika [°C] | 178 | 327 |
| Tembiricha Yekushandisa [°C] | -60 kusvika ku150 | -200 kusvika 260 |
| Tensile Simba | 50 | 20 kusvika ku35 |
| Chemical Resistivity | Hapana imwe data iripo;zvakafanana nePTFE | Exceptional.Incombustible uye insolvable mune zvese zvinozivikanwa zvinonyungudutsa.Inorwiswa chete nesimbi yakanyungudutswa yealkali uye nefluorine pakupisa kwakanyanya. |
PTFE nePVDF (durapore) ese ari maviri anoshandiswa muprotein inosunga sefa membranes (Millipore chaizvo).Kemikari kutaura iwo maviri mapolymer anosiyana zvakanyanya nekuda kwekuwedzera fluorides uye molecular huremu.Mapuroteni avo anosunga zvinhu zvakasiyanawo.
Kazhinji, PTFE haina 'tsvimbo' kupfuura PVDF, iyo isiri tsvimbo pane polyethylene (PE).PTFE inoshingirira mumakemikari mukuora kupfuura PVDF kana PE.Iwe wakarurama kuti utarise chimiro chemakemikari.Iyo yakawanda maatomu eFluorine kumusana, mapuroteni akawanda haakwanise kusungirira pamusoro pemakemikari.Kuyera zvinhu zvakaita sekona yekubata kunosimbisa izvi.Ini handizive kuti yakawanda sei iyo pore chimiro che membrane inobata zvinhu, asi kubva kune kemikari maonero, kune misiyano yakajeka.
PTFE -poly tetra fluoro ethylene nePVDF -polyvinylidene fluoride ose ari mapolymers anoshandiswa ku hydrophobic property ye electrode kudzivirira mafashama ecathode material( carbon cloth).Kunyanya muzvidzidzo, vari kushandisa PTFE solution pane mamwe marudzi emushonga...
Vose vari vaviri vakagadzikana zvakakwana.Funga kuti chikonzero chiri mukupedzisira electrode morphology, nekuti PVDF binder inoshandiswa semhinduro yechokwadi (glue), nepo PTFE imwe iri kumiswa ine isinganyungudika nanosized particles.
PVDF inonyanya kushanda kupfuura PTFE mune mamwe mamiriro.
PS: Kana iwe uchida sampuli kana rumwe ruzivo nezve PTFE yakaumbwa tsvimbo vs PTFE extruded tsvimbo, PTFE tubing, PTFE hose, uye PTFE midziyo, ndapota taura nesu.
Nguva yekutumira: Nov-10-2019