PTFE yog cov tshuaj tiv thaiv corrosion ntau dua li PVDF lossis PE.Qhov ntau fluorine atoms ntawm tus txha caj qaum, cov protein ntau yuav tsis muaj peev xwm ua rau cov tshuaj latch rau saum npoo.
Qhov sib txawv tseem ceeb ntawm PTFE thiab PVDF
| Polymer | PVDF | PTFE |
| Qauv | –[–CF2–CHF–]n– | –[–CF2–CF2]n– |
| Kev Tsim Kho Tshuab | tshuab | Kub lossis txias isostatic nias thiab / lossis sintering |
| Kev siv Catalysts thiab/los yog Lwm Yam Ntxiv | Cd, Ba, K | Tsis muaj |
| Nqe | Nruab nrab | Siab |
| Qhov ceev [g / cm3] | 1.8 | 2.1 rau 2.3 |
| Melting point [°C] | 178 | 327 |
| Qhov ntsuas kub rau daim ntawv thov [°C] | -60 rau 150 | - 200 rau 260 |
| Tensile zog | 50 | 20 rau 35 |
| Tshuaj tiv thaiv | Tsis muaj ntaub ntawv ntxiv;zoo ib yam li PTFE | Exceptional.Incombustible thiab insolvable nyob rau hauv tag nrho cov paub cov kuab tshuaj.Tawm tsam tsuas yog los ntawm molten alkali hlau thiab fluorine ntawm qhov kub thiab txias. |
PTFE thiab PVDF (durapore) yog ob qho tib si siv rau hauv cov protein khi lim membranes (Millipore tshwj xeeb).Kev hais lus ntawm ob lub polymers sib txawv heev vim muaj cov fluorides ntxiv thiab qhov hnyav molecular.Lawv cov protein-binding zog kuj txawv.
Feem ntau, PTFE yog ntau 'tsis-stick' tshaj PVDF, uas yog ntau tsis-stick dua polyethylene (PE).PTFE yog cov tshuaj tiv thaiv corrosion ntau dua li PVDF lossis PE.Koj yog lawm saib cov qauv tshuaj.Qhov ntau fluorine atoms ntawm tus txha caj qaum, cov protein ntau yuav tsis muaj peev xwm ua rau cov tshuaj latch rau saum npoo.Kev ntsuas tej yam xws li lub kaum sab xis sib cuag yuav paub meej qhov no.Kuv tsis paub ntau npaum li cas cov pore qauv ntawm daim nyias nyias muaj feem xyuam rau tej yam, tab sis los ntawm ib tug tshuaj standpoint, muaj meej sib txawv.
PTFE -poly tetra fluoro ethylene thiab PVDF -polyvinylidene fluoride ob leeg yog cov polymers siv rau cov khoom siv hydrophobic ntawm cov electrode kom tsis txhob muaj dej nyab ntawm cov khoom siv cathode (carbon daim ntaub).
Ob leeg nyob ruaj khov txaus.Xav tias yog vim li cas nyob rau hauv qhov kawg electrode morphology, vim hais tias PVDF binder siv raws li ib tug tseeb tov (kua nplaum), thaum PTFE ib tug yog ncua kev kawm ntawv nrog unsoluble nanosized hais.
PVDF yog ntau reactive tshaj PTFE nyob rau hauv tej yam kev mob.
PS: Yog tias koj xav tau cov qauv lossis ntau cov ntaub ntawv hais txog PTFE molded pas nrig vs PTFE extruded pas nrig, PTFE tubing, PTFE hose, thiab PTFE khoom, thov hu rau peb.
Post lub sij hawm: Nov-10-2019