Hydrofluoric Acid (HF)
Khoom Paub meej
Specifications muab
Transparency kua Cov ntsiab lus ≥ 35% -55%
(Scope ntawm daim ntawv thov siv 'cov khoom siv')
Hydrogen fluoride gas yog soluble hauv dej, thiab nws cov kua aqueous hu ua hydrofluoric acid.Cov khoom lag luam feem ntau yog 35% -50% hydrogen fluoride gas aqueous tov, qhov siab tshaj plaws concentration tuaj yeem ncav cuag 75%, rau cov kua tsis muaj xim tsis meej.Ntsim pungent, volatile, dawb pa luam yeeb nyob rau hauv cov huab cua.Nws yog ib qho nruab nrab lub zog inorganic acid uas yog corrosive heev thiab tuaj yeem corrode iav thiab silicates los ua gaseous silicon tetrafluoride.Nws tuaj yeem cuam tshuam nrog cov hlau, hlau oxides thiab hydroxides los tsim ntau cov ntsev, tab sis cov nyhuv tsis muaj zog li hydrochloric acid.Kub, platinum, txhuas, paraffin thiab qee cov yas siv tsis tau, yog li cov thawv tuaj yeem ua tau.Hydrogen fluoride gas yog yooj yim polymerized rau daim ntawv (HF) 2 (HF) 3 · homochain molecules, thiab nyob rau hauv lub xeev cov kua, lub degree ntawm polymerization nce.Khaws rau hauv cov thawv uas ua los ntawm txhuas, siv quav ciab lossis yas.Nws yog tshuaj lom heev thiab tuaj yeem ulcerate ntawm daim tawv nqaij.
EVERBRIGHT® ' kuj tseem yuav muab customized ： cov ntsiab lus / whiteness / particlesize / PHvalue / xim / ntim style / ntim specifications thiab lwm yam khoom tshwj xeeb uas tsim nyog rau koj cov kev siv, thiab muab cov qauv dawb.
Khoom Parameter
7664-39-3
231-634-8 ib
20.01 Nws
Inorganic acid
1.26g / cm³
soluble nyob rau hauv dej
120 (35.3%)
-83.1 (Ntshiab)
Khoom siv
Quartz xuab zeb pickling
Nws ua haujlwm zoo tshaj plaws thaum kho nrog hydrofluoric acid, tab sis xav tau ntau dua.Thaum sib koom nrog sodium disulfite, txo qis ntawm hydrofluoric acid tuaj yeem siv tau.Ib qho concentration ntawm hydrochloric acid thiab hydrofluoric acid tov tau tov rau hauv quartz mortar tib lub sijhawm raws li kev faib ua feem;Nws tseem tuaj yeem kho nrog hydrochloric acid tov ua ntej, ntxuav thiab tom qab ntawd kho nrog hydrofluoric acid, kho ntawm qhov kub thiab txias rau 2-3 teev, thiab tom qab ntawd lim thiab ntxuav, uas tuaj yeem tshem tawm impurities thiab oxides ntawm quartz xuab zeb thiab txhim kho. purity thiab zoo ntawm quartz xuab zeb.
Hlau nto kho
Tshem tawm cov pa oxygen uas muaj impurities, hydrofluoric acid yog cov kua qaub tsis muaj zog, zoo ib yam li lub zog rau formic acid.Qhov dav dav ntawm cov khoom lag luam muaj hydrofluoric acid yog 30% txog 50%.Cov yam ntxwv tseem ceeb ntawm hydrofluoric acid xeb tshem tawm yog raws li hauv qab no:
(1) Muaj peev xwm yaj cov khoom sib txuas ntawm silicon, txhuas, chromium thiab lwm yam hlau oxides kuj muaj cov solubility zoo, feem ntau yog siv los etch castings, stainless hlau thiab lwm yam workpieces.
(2) Rau steel workpieces, tsis tshua muaj concentration hydrofluoric acid tuaj yeem siv rau kev tshem tawm xeb.Hydrofluoric acid tov nrog 70% concentration muaj passivation nyhuv ntawm hlau
(3) Hydrofluoric acid nrog ib tug concentration ntawm txog 10% muaj ib tug tsis muaj zog corrosion nyhuv ntawm magnesium thiab nws alloys, yog li nws yog feem ntau siv nyob rau hauv lub etching ntawm magnesium workpieces.
(4) txhuas feem ntau tsis corroded los ntawm hydrofluoric acid;Nickel muaj zog tiv thaiv nyob rau hauv hydrofluoric acid daws nrog ntau dua 60%.Hydrofluoric acid yog cov tshuaj lom thiab tsis haum, thiab yog siv los tiv thaiv tib neeg kev sib cuag nrog hydrofluoric acid kua thiab hydrogen fluoride gas, lub tank etching yog zoo tshaj plaws kaw thiab muaj ib tug zoo qhov cua tshuab, thiab cov tshuaj fluorinated dej khib nyiab tuaj yeem tso tawm.
Graphite processing
Hydrofluoric acid yog cov kua qaub uas muaj zog uas tuaj yeem ua rau yuav luag txhua qhov impurity hauv graphite, thiab graphite muaj cov kua qaub zoo, tshwj xeeb tshaj yog tuaj yeem tiv thaiv hydrofluoric acid, uas txiav txim siab tias graphite tuaj yeem ua kom huv nrog hydrofluoric acid.Cov txheej txheem tseem ceeb ntawm txoj kev hydrofluoric acid yog sib tov graphite nrog hydrofluoric acid, thiab react hydrofluoric acid nrog impurities rau ib lub sij hawm los tsim cov tshuaj soluble los yog volatiles, tom qab ntxuav kom tshem tawm impurities, lub cev qhuav dej thiab ziab kom tau purified graphite.
Tshwj xeeb rau lub ntiaj teb tsis tshua muaj mining
Txoj kev npaj ntawm lub ntiaj teb tsis tshua muaj fluoride yog ua kom cov dej tsis tshua muaj lub ntiaj teb fluoride los ntawm cov tshuaj aqueous, thiab tom qab ntawd dehydrate lossis fluorinate lub ntiaj teb tsis tshua muaj oxide ncaj qha nrog fluorinating tus neeg sawv cev.Lub solubility ntawm lub ntiaj teb tsis tshua muaj fluoride yog me me, thiab nws tuaj yeem ua los ntawm hydrofluoric, sulfuric, lossis nitric acid daws ntawm lub ntiaj teb tsis tshua muaj siv hydrofluoric acid (cov precipitate yog precipitated nyob rau hauv daim ntawv ntawm hydrated fluoride).
TPT-LCD Screen thinning (Electronic qib)
Nyob rau hauv kev tiv thaiv ntawm photoresist thiab ntug kua nplaum, qhov concentration ntawm hydrofluoric acid yog kho, ib tug tej yam nqi ntawm nitric acid, concentrated sulfuric acid thiab hydrochloric acid yog ntxiv, thiab cov ultrasonic auxiliary tej yam kev mob ntxiv, tus nqi etching yog obviously txhim kho.Kev hloov kho tuaj yeem txo qhov roughness ntawm qhov chaw thiab txo cov nag lossis daus ntawm cov ntaub nplaum dawb.Qhov teeb meem ntawm ntxhib nto thiab dawb nto adhesion nag lossis daus yog daws.
Fiber ntau corrosion
Hydrofluoric acid muaj cov tshuaj tiv thaiv corrosion photonic siv lead ua fiber ntau (PCF).Hydrofluoric acid yog sau rau hauv lub qhov hws ntawm stretched photonic crystal fiber.Los ntawm kev hloov nws cov qauv ntoo khaub lig, lub photonic siv lead ua fiber ntau nrog cov qauv tshwj xeeb yog tsim thiab nws cov khoom siv kho qhov muag tau hloov pauv.Cov txiaj ntsig tau pom tias qhov xau poob thiab tawg poob qis nrog qhov nce ntawm qhov porosity corrosion degree, cov nonlinear coefficient nce pom tseeb, cov txiaj ntsig zoo ntawm cov pwm pwm thiab qhov sib npaug refractive Performance index ntawm cladding txo qis, thiab pab pawg tshaj tawm dispersion. kuj hloov.
