Khoom

Polyvinylidene Fluoride

Khoom Taw qhia

Polyvinylidene fluoride Cov ntaub ntawv yooj yim

Khoom npe:	Polyvinylidene fluoride
Synonyms:	VINYLIDENE FLUORIDE POLYMER; PVDF; PVF2; POLY(VINYLIDENE FLUORIDE); POLY(VINYLIDENE FLUORIDE), POWDER; PolyvinylideneFluoride(Pvdf); PVDF(polyvinylidene fluoride); 1,1-Difluorothylene
CAS:	24937-79-9
MF:	C2H2F2
MW:	64.0340864
EINECS:	607-458-6
Khoom Categories:	Hydrophobic Polymers; Khoom siv Science; Polymers; Fluorocarbons; Hydrophobic Polymers; Polymer Science; Polymer Science
Mol File:	24937-79-9.mol

Polyvinylidene fluoride Chemical Properties

Melting point	166-170 degree
ceev	1.78 g / ml ntawm 25 degree
Tg	-38
vapor siab	15 hli Hg (32 degree)
Refractive Index	n20/D 1.42
cia temp.	Muab kaw rau hauv qhuav, Chav Kub
solubility	ib co polar solvents xws li organic esters thiab amines: soluble
daim ntawv	hmoov
xim	Dawb
Dej Solubility	Soluble hauv organic esters, dimethylacetamide thiab amines. Insoluble hauv dej.
Kev ruaj ntseg:	ruaj khov. Incompatible nrog muaj zog oxidizing neeg sawv cev, silica.
EPA Tshuaj Registry System	Ethene, 1, 1-difluoro-, homopolymer (24937-79-9)

Cov ntaub ntawv kev nyab xeeb

Hazard Codes	C,T
Cov lus hais txog kev nyab xeeb	22-24/25
WGK Germany	3
TSCA	Yog lawm
HS Code	3904698081
Cov Ntaub Ntawv Muaj Xwm Ceev	24937-79-9(Cov ntaub ntawv muaj phom sij)

MSDS Cov Ntaub Ntawv

Tus kws kho mob	Lus
SigmaAldrich	Lus Askiv
ALFA	Lus Askiv

Polyvinylidene fluoride Kev siv thiab kev sib xyaw

Chemical Properties	Polyvinylidene fluoride (PVDF) yog ib qho ntawm cov tawv tawv thiab puas resistant ntawm cov yaj-ua tau fluoropolymer. Nws muaj cov tshuaj tiv thaiv zoo, txawm tias kub sulfuric acid thiab kub amines tuaj yeem tua nws. Zoo li feem ntau cov fluoropolymers, PVDF yog inherently nplaim retardant. Nws khaws cov khoom siv kho kom zoo kom txog thaum 300 degrees F (149 degrees C).
Chemical Properties	Poly (vinylidene fluoride) (PVDF) yog tsim los ntawm polymerization ntawm vinylidene fluoride nyob rau hauv aqueous nruab nrab nyob rau hauv lub siab tab sis cov ntsiab lus ntawm cov txheej txheem tsis tau nthuav tawm. Ob qib ntawm polymer muaj nyob nrog qhov sib txawv nruab nrab qhov hnyav molecular, uas yog 300000 thiab 600000. Poly (vinylidene fluoride) muaj tensile zoo thiab cuam tshuam lub zog. Cov polymer muaj qhov txawv txav piezoelectric thiab pyroelectric zog uas tau ua rau nws siv hauv cov khoom siv hloov pauv hauv lub xeev. Qhov tsis kam ntawm poly (vinylidene fluoride) rau cov kuab tshuaj thiab tshuaj feem ntau yog qhov zoo tab sis qis dua ntawm polytetrafluoroethylene thiab polychlorotrifluoroethylene. Qee cov kuab tshuaj hnyav heev xws li dimethylacetamide yaj cov polymer ntawm qhov kub thiab txias thaum cov organic amines ua rau tsis muaj xim thiab embrittlement. Fuming sulfuric acid ua rau suiphonation. Poly (vinylidene fluoride) muaj cov cua sov zoo thiab tuaj yeem siv tsis tu ncua ntawm qhov kub txog li 150 degree. Lub polymer yuav yaj ua tiav los ntawm cov txheej txheem kev txhaj tshuaj molding thiab extrusion. Lub polymer muaj cov huab cua tiv taus zoo heev. Cov ntawv thov rau poly (vinylidene fluoride) muaj xws li molded thiab lined tanks, li qub, twj thiab lwm yam khoom siv de kos npe los lis corrosive kua. Lub polymer kuj tseem siv rau hauv cov txheej txheem thiab cov hlau npog.
Siv	Coatings, zaj duab xis, lim ntaub, ntsuas hauv ob sab phlu, pom daim nyias nyias, twj tso kua mis qhov chaw thiab hauv ob sab phlu thiab li qub.
Siv	Poly (vinylidene fluoride) yog resistant rau feem ntau cov kua qaub thiab alkalies tab sis nws raug tawm tsam los ntawm fuming sulfuric acid. Nws yog soluble nyob rau hauv dimethylacetamide tab sis yog insoluble nyob rau hauv tsawg polar solvents. Copolymers tau tsim nrog ethylene, tetrafluoroethylene, chlorotrifluoroethylene thiab hexafluoroethylene. Cov tom kawg yog elastomer hu ua Viton lossis Fluorel. Lub homopolymer yog siv los ua cov tshuaj tiv thaiv txheej rau hlau, rau lub tank linings, hose, thiab twj impellers. Lub elastomeric copolymer nrog hexafluoroethylene thaum kho nrog hexamethylenediamine yog siv los ua lub foob, gasket, 0-ring, tubing, txheej thiab hauv ob sab phlu.
Siv	Poly (vinylidene fluoride) muaj txiaj ntsig zoo hauv cov coatings, zaj duab xis, cov ntaub lim dej, cov khoom siv hauv ob sab phlu, pom daim nyias nyias, cov twj tso kua mis, cov hauv ob sab phlu thiab li qub. Nws kuj yog siv los ua cov khoom siv rau transducers hauv cov khoom siv xws li lub mloog pob ntseg, microphones thiab sonic detectors. Nws tseem yog qhov 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 raws li tus qauv binder siv hauv kev tsim cov khoom siv hluav taws xob sib xyaw rau cov roj teeb lithium ion. Nws ua hauj lwm raws li qib siab insulator rau cov xov hlau, nanomaterials thiab siab sensors. Nws yog siv los ua cov ntxaij lim dej uas siv los npaj cov qauv rau kev ua haujlwm siab ua kua chromatography thiab lwm yam kev tshuaj ntsuam xyuas qib siab.
Txoj kev tsim khoom	PVDF, ntxiv polymer ntawm 1,1, difluoroethene, yog npaj los ntawm high-pressure dawb-radical polymerization nyob rau hauv aqueous systems. Nws muaj cov ntawv thov hauv cov khoom siv hluav taws xob thiab hluav taws xob, raws li huab cua-resistant binders rau sab nrauv architectural finishes, thiab nyob rau hauv ib tug xov tooj ntawm cov cheeb tsam ntawm kev lag luam tshuaj. Qhov tsis muaj additives thiab yog li cov kab mob tsawg heev ua rau cov khoom siv polymer muaj txiaj ntsig zoo hauv cov dej ntshiab ultrapure, piv txwv li, qhov purity siab yog tsim nyog rau cov khoom siv.
Txoj kev tsim khoom	Cov khoom no yog tsim los ntawm cov saw dawb-radical polymerization ntawm vinylidene fluoride (H2C=F2). Cov pa roj tsw qab no uas muaj qhov kub hnyiab ntawm ?82 degree yog tsim los ntawm thermal dehydrochlorination ntawm 1,1, 1-chlorodifluoroethane lossis los ntawm dechlorination ntawm 1, 2-dichloro-1, {{ 11}}difluoro-ethane.
Txhais	ChEBI: Ib qho polymer uas muaj qhov rov ua dua 1,1-difluoroethyl units.
Kev piav qhia dav dav	Poly (vinylidene fluoride) PVDF yog ib qho crystalline non-centrosymmetric polymer uas nthuav tawm piezo-, pyro- thiab ferroelectric zog. Nws yog ib tug linear polymer uas qhia tau hais tias mus tas li hluav taws xob dipoles perpendicular mus rau cov kev taw qhia ntawm cov molecular saw. Cov dipoles no tshwm sim los ntawm qhov sib txawv hauv electronegativity ntawm cov atoms ntawm hydrogen thiab fluorine nrog rau carbon. Nyob ntawm cov txheej txheem ua haujlwm, PVDF nthuav tawm ntau qhov sib txawv crystalline theem ( , , , δ). Theem ntawm PVDF yog theem uas nthuav tawm qhov zoo tshaj plaws ferroelectric thiab piezoelectric zog.
Kev siv tshuab	Cov fluorohydrocarbons muaj ob hom: polyvinylidenefluoride (PVF2) thiab polyvinyl fluoride (PVF). Txawm hais tias zoo ib yam li lwm cov fluoroplastics, lawv muaj cov cua kub qis dua thiab muaj zog tensile thiab compressive ntau dua. PVF2, qhov nyuaj tshaj plaws ntawm cov fluoroplastic resins, yog muaj nyob rau hauv pellets rau extrusion thiab molding thiab raws li hmoov thiab dispersions forcorrosion-resistant coatings. Qhov no high-molecular-yuag homopolymer muaj kev tiv thaiv zoo rau kev ntxhov siab qaug zog, puas, thiab ua kom txias. Txawm hais tias cov khoom siv insulating thiab chemicalinertness ntawm PVDF tsis zoo li cov fluorinated polymers, PTFE thiab FEP, qhov sib npaug ntawm cov khoom muaj nyob rau hauv PVDF tsim nyog cov resin rau ntau daim ntawv thov engineering. Nws tuaj yeem siv dhau qhov kub ntawm -73 txog 149 degree thiab muaj kev tiv thaiv zoo rau kev puas tsuaj.
Kev siv tshuab	Cov khoom muaj feem ntau zoo ib yam li lwm cov fluorinated resins: txheeb ze inertness, tsis tshua muaj dielectric tsis tu ncua, thiab thermal stability (txog li 150 degree). Cov resins (PVF2 resins) yog, txawm li cas los xij, muaj zog dua thiab tsis tshua muaj kev cuam tshuam thiab puas dua li TFE thiab CTFE resins. Kev siv ntawm polyvinylidene fluoride feem ntau yog hluav taws xob rwb thaiv tsev, kav dej, txheej txheem txheej txheem, thiab ua cov txheej txheem tiv thaiv hauv daim ntawv ntawm cov kua dispersion.
Kev siv tshuab	PVDF tuaj yeem siv nrog halogens, acids, bases, thiab muaj zog oxidizing tus neeg sawv cev, tab sis nws tsis pom zoo siv rau kev sib cuag nrog ketones, esters, amines, thiab qee cov organic acids. Txawm hais tias cov khoom hluav taws xob ntawm PVDF tsis zoo li lwm cov fluoroplastics, nws yog dav siv los insulate hlau thiab cable hauv computer thiab lwm yam khoom siv hluav taws xob thiab hluav taws xob. Thaum tshav kub kub-shrinkable tubing ntawm PVDF yog siv raws li ib tug tiv thaiv npog ntawm resistors thiab diodes, raws li ib tug encapsulant tshaj soldered pob qij txha. Valves, piping, thiab lwm yam khoom thiab cov kab sib txuas yog cov kev siv ntawm PVDF hauv cov khoom siv tshuaj. Nws tsuas yog fluoroplastic nkaus xwb muaj nyob rau hauv cov yeeb nkab nruj. Woven daim ntaub ua los ntawm PVDF monofilament yog siv rau kev siv tshuaj pom. Ib qho tseem ceeb ntawm daim ntawv thov rau PVDF cov ntaub ntawv yog raws li ib tug tiv thaiv txheej rau hlau panels siv nyob rau hauv kev pab sab nraum zoov. Lub peev xwm tsis ntev los no tau tsim los ntawm PVDF zaj duab xis yog ua raws li qhov tshwj xeeb piezoelectric yam ntxwv ntawm cov yeeb yaj kiab hauv nws qhov hu ua beta theem. Thaum compressed los yog stretched, polarized PVDF generates ib tug voltage ntawm ib tug metallized nto mus rau lwm yam, proportional rau induced strain.
Solubility hauv cov organic	Cyclohexanone, DMAC, DMF, DMSO, ethylene carbonate, propylene carbonate