Activated Carbon Fiber Felt (ACF felt) is a porous functional material produced by first "felting" precursor fibers such as viscose, polyacrylonitrile (PAN) or pitch, then "carbonizing + activating" the web. It merges the flexibility of a textile with the ultra-high surface area of activated carbon. Looking like a thin black velvet cloth, it hides an "inner surface" >1 000 m²/g thiab micro- pore pejxeem (1–2 nm) uas suav nrog ntau dua 80% ntawm nws cov porosity tag nrho-yog li nws lub npe menyuam yaus "nanosponge koj tuaj yeem kov".
Manufacturing roadmap: plaub- kauj ruam taug kev los ntawm "paj rwb" mus rau "dub kub"
Felting: carding thiab koob- punching staple precursor fibers rau hauv 0.3-2 mm web uas ua kom nws ncaj ncees nyob rau hauv cov kauj ruam tom ntej.
Stabilization: cua sov hauv qhov nro ntawm 200-300℃kom hla -txuas kab macromolecules rau hauv "tus ntaiv" qauv thiab tiv thaiv melting thaum lub sij hawm carbonization.
Carbonization: pyrolysis ntawm 700–{1}}℃hauv N₂; tsis yog- cov ntsiab lus carbon tawm li CH₄, CO₂, H₂O, tsim cov graphitic micro-crystalline carbon skeleton.
Activation: selective "burn-off" with steam or CO₂ at 800–1 000 °C; micropores develop rapidly, >90% ntawm pore ntim yog<2 nm, and BET surface area jumps to 1 500–2 000 m²/g.
Cov qauv-tsav kev ua tau zoo: rau "killer nta" ntawm ACF xav
Ultra- cheeb tsam siab: 1 000–{2}} m²/g, 2–3 × ntawm granular activated carbon (GAC).
xob laim-fast kinetics: 10–20 µm fiber inch muab txoj kev luv luv; gas-theem equilibrium hauv<30 s, liquid-phase in minutes-10-100× faster than GAC.
Trace-level efficiency: tswj kev tshem tawm siab rau ppm-level benzene, aldehydes, SO₂, NOx-zoo tagnrho rau sab hauv tsev lossis hauv -cov ntawv thov hauv tsev.
Thermal & flame resistance: ignition point >500℃hauv huab cua, tiv taus 1 000℃hauv inert gas; ua tau raws FMVSS 302 tsis yog- qhov ntsuas kub.
Chemical robustness: >90% lub zog tuav ntawm pH 1-14, hluav taws xob conductive, acid / alkali tiv taus, cov ntsiab lus tshauv<1.5 %.
Ib qho yooj yim rov tsim dua: 10-30 min ntawm 120-150℃nrog chav lossis cua kub kom tshem tawm VOCs; Ntau dua lossis sib npaug li 90% muaj peev xwm khaws cia tom qab 100 cycles.
Nrog nws tus cwj pwm "ceev, muaj zog, nyias, lub teeb", ACF xav tau hloov cov tsoos granular thiab hmoov carbons thiab dhau los ua txhua yam -ib puag ncig tus neeg ua si los ntawm tsheb sab hauv mus rau nuclear- qib purification. Raws li kev ua haujlwm sib xyaw ua ke thiab ntse- tsim cov thev naus laus zis ua ntej, "cov ntaub dub" no yuav ua rau muaj txiaj ntsig ntau dua hauv kev txiav emissions, ntes carbon thiab tiv thaiv kev noj qab haus huv raws li ob-carbon thiab Healthy China cov tswv yim.
https://www.naturecarbon.com/activated-carbon-fiber/high-zoo-activated-carbon-cloth-fabric.html
