Polyvinylidene fluoride/PVDF/CAS: 24937-79-9
Kev Piav Qhia Luv:
Lub Npe Khoom: Polyvinylidene fluoride
CAS: 24937-79-9
Hom: ZA-Y
MF:C2H2F2
MW:64.0340864
QAUV:
Kev piav qhia:
Poly(vinylidene fluoride) PVDF yog ib qho semi crystalline non-centrosymmetric polymer uas muaj cov yam ntxwv piezo-, pyro- thiab ferroelectric. Nws yog ib qho linear polymer uas qhia txog cov dipoles hluav taws xob tas mus li perpendicular rau qhov kev taw qhia ntawm cov saw hlau molecular. Cov dipoles no yog los ntawm qhov sib txawv ntawm electronegativity ntawm cov atoms ntawm hydrogen thiab fluorine piv rau carbon. Nyob ntawm cov xwm txheej ua haujlwm, PVDF qhia txog ntau theem crystalline sib txawv (α, β, γ, δ). Lub theem β ntawm PVDF yog theem uas qhia txog cov yam ntxwv ferroelectric thiab piezoelectric zoo tshaj plaws.
Kev Qhia Tshwj Xeeb:
| Khoom | Cov Lus Qhia Tshwj Xeeb |
| Qhov kub yaj | 166-170°C |
| Qhov Ceev | 1.78 g/mL ntawm 25 °C |
| Lub zog ua pa | 15 hli Hg (32 °C) |
| Cov ntsuas kev cuam tshuam | n20/Hnub 1.42 |
| Cia txias. | Kaw rau hauv qhov qhuav, Chav Kub |
| Kev yaj tau | qee cov kuab tshuaj polar xws li cov organic esters thiab amines: yaj tau |
| Daim Ntawv | Hmoov. |
| Xim | Dawb |
Kev Siv
Poly (vinylidene fluoride) tiv taus feem ntau cov kua qaub thiab alkalies tab sis nws raug tawm tsam los ntawm fuming sulfuric acid. Nws yaj tau hauv dimethylacetamide tab sis tsis yaj hauv cov kuab tshuaj polar tsawg dua. Copolymers tau tsim nrog ethylene, tetrafluoroethylene, chlorotrifluoroethylene thiab hexafluoroethylene. Qhov kawg yog elastomer hu ua Viton lossis Fluorel.
Cov homopolymer no siv ua ib txheej tiv taus tshuaj rau cov hlau, rau cov ntaub hauv lub tank, cov yeeb nkab, thiab cov twj tso kua mis. Cov elastomeric copolymer nrog hexafluoroethylene thaum kho nrog hexamethylenediamine yog siv ua lub foob, gasket, 0-ring, tubing, txheej thiab ntaub hauv.
Poly (vinylidene fluoride) muaj txiaj ntsig zoo rau cov txheej txheej, zaj duab xis, daim ntaub lim dej, cov ntaub thaiv qhov chaw, cov ntaub thaiv lim dej, cov khoom siv twj tso kua mis, cov ntaub thaiv thiab cov li qub. Nws kuj tseem siv ua cov khoom siv rau cov transducers hauv cov khoom siv xws li lub mloog pob ntseg, microphones thiab sonic detectors. Nws tseem ceeb rau kev siv piezoelectric thiab electrostrictive. Tsis tas li ntawd, nws muaj txiaj ntsig zoo rau cov kab nuv ntses monofilament hloov nylon monofilament. Nws ua haujlwm ua tus qauv binder siv hauv kev tsim cov electrodes sib xyaw rau cov roj teeb lithium ion. Nws ua haujlwm ua cov insulator qib siab rau cov xov hlau, nanomaterials thiab cov sensors siab. Nws yog siv los ua cov lim dej uas siv los npaj cov qauv rau kev ua haujlwm siab chromatography kua thiab lwm yam txheej txheem analytical siab heev.
Cov txheej txheej, zaj duab xis, daim ntaub lim dej, cov ntaub thaiv qhov ntsuas, cov ntaub lim dej, cov khoom twj tso kua mis thiab cov ntaub thaiv thiab cov li qub.
Ntim thiab Xa Khoom
20KG/Nruas
Yog cov khoom siv dav dav thiab tuaj yeem xa los ntawm dej hiav txwv thiab huab cua
Khaws cia thiab khaws cia
Lub neej txee: 24 lub hlis txij li hnub tsim khoom hauv cov ntim khoom tsis tau qhib khaws cia rau hauv qhov chaw txias thiab qhuav kom tsis txhob raug tshav ntuj ncaj qha, dej.
Lub tsev rau khoom muaj cua nkag, ziab kom qhuav kub tsawg, Sib cais ntawm cov tshuaj oxidants, cov kua qaub.
