Pre-oxidized Polyacrylonitrile Fiber Nonwoven (luv ua PAN pre-oxidized fiber nonwoven) yog cov ntaub ua haujlwm tsis yog woven ua los ntawm polyacrylonitrile (PAN) los ntawm kev tig thiab kev kho ua ntej-oxidation. Nws cov yam ntxwv tseem ceeb suav nrog kev tiv taus kub siab zoo heev, hluav taws kub retardancy, corrosion tsis kam thiab qee lub zog kho tshuab. Ntxiv mus, nws tsis yaj lossis ntws ntawm qhov kub siab tab sis tsuas yog carbonizes qeeb qeeb. Yog li ntawd, nws yog siv dav hauv cov xwm txheej nrog cov kev xav tau siab heev rau kev nyab xeeb thiab kev tiv thaiv huab cua. Cov hauv qab no muab cov lus piav qhia ntxaws ntxaws los ntawm ntau qhov chaw thov tseem ceeb, suav nrog cov xwm txheej thov, cov haujlwm tseem ceeb, thiab cov ntawv khoom:
1Kev tiv thaiv hluav taws thiab kev cawm neeg thaum muaj xwm txheej ceev
Kev tiv thaiv hluav taws yog ib qho ntawm cov xwm txheej tseem ceeb tshaj plaws ntawm cov ntaub tsis-woven uas muaj cov pa oxygenated ua ntej. Nws cov khoom tiv taus hluav taws thiab tiv taus kub siab tuaj yeem ua kom muaj kev nyab xeeb ntawm cov neeg ua haujlwm. Cov ntawv thov tseem ceeb suav nrog:
Txheej sab hauv/txheej rwb thaiv tsev kub ntawm cov khaub ncaws tiv thaiv hluav taws
Cov khaub ncaws tua hluav taws yuav tsum ua tau raws li ob qho kev cai ntawm "kev tiv thaiv hluav taws kub" thiab "kev rwb thaiv cua sov": txheej sab nraud feem ntau siv cov ntaub tiv thaiv hluav taws kub xws li aramid, thaum txheej rwb thaiv cua sov nruab nrab siv cov ntaub tsis-woven uas tau ua ntej oxidized. Nws tuaj yeem tswj tau qhov ruaj khov ntawm qhov kub siab ntawm 200-300 ℃, thaiv tau zoo lub zog hluav taws xob thiab cua sov ntawm cov nplaim taws, thiab tiv thaiv cov tawv nqaij tua hluav taws kom tsis txhob kub hnyiab. Txawm tias thaum raug rau cov nplaim taws qhib, nws yuav tsis yaj lossis ntws (tsis zoo li cov tshuaj fibers ib txwm muaj), txo qhov kev pheej hmoo ntawm kev raug mob thib ob.
Lus Cim:Qhov ntom ntawm cov ntaub uas tsis yog woven uas tau ua ntej oxidized (feem ntau yog 30-100g/㎡) tuaj yeem hloov kho raws li qib kev tiv thaiv. Cov khoom uas muaj qhov ntom ntawm qhov chaw siab dua muaj cov teebmeem rwb thaiv cua sov zoo dua.
Cov khoom siv khiav tawm thaum muaj xwm txheej ceev
➤ Daim pam khiav tawm hluav taws: Cov khoom siv tua hluav taws thaum muaj xwm txheej ceev rau cov tsev, cov khw loj, cov tsheb ciav hlau hauv av thiab lwm qhov chaw. Nws yog ua los ntawm cov ntaub tsis-woven uas muaj oxygenated thiab cov iav fiber. Thaum raug hluav taws, nws sai sai tsim "kev thaiv hluav taws kub", npog lub cev tib neeg lossis qhwv cov khoom siv hluav taws kom cais cov pa oxygen thiab tua hluav taws.
➤ Lub npog ntsej muag uas tiv taus hluav taws/lub npog ntsej muag ua pa: Hauv hluav taws, cov pa luam yeeb muaj cov pa phem ntau heev. Cov ntaub uas tsis yog woven uas muaj oxygenated ua ntej siv tau ua cov khoom siv rau txheej lim pa luam yeeb ntawm lub npog ntsej muag. Nws cov qauv tiv taus kub siab tuaj yeem tiv thaiv cov khoom siv lim kom tsis txhob puas thaum kub siab. Ua ke nrog cov txheej carbon activated, nws tuaj yeem lim tawm qee cov khoom lom.
2Kev tiv thaiv kev kub siab tiv taus teb
Hauv kev teeb tsa kev lag luam, feem ntau ntsib qhov chaw kub heev xws li kub siab, xeb, thiab kev sib txhuam tshuab. Kev tiv thaiv huab cua ntawm cov ntaub tsis-woven uas muaj oxygenated ua ntej tuaj yeem daws cov teeb meem ntawm kev puas tsuaj yooj yim thiab lub neej luv luv ntawm cov ntaub ntawv ib txwm muaj (xws li paj rwb thiab cov tshuaj fibers ib txwm muaj).
➤ Kev rwb thaiv tsev thiab kev txuag cua sov rau cov kav dej kub thiab cov khoom siv
Cov kav dej kub siab hauv kev lag luam tshuaj lom neeg, hlau thiab fais fab (xws li cov kav dej ncu thiab cov pa roj av) xav tau cov ntaub thaiv sab nraud uas yog "fire-retardant" thiab "heat-insulating". Cov ntaub tsis-woven uas muaj oxygenated filament ua ntej tuaj yeem ua rau hauv cov yob lossis tes tsho thiab qhwv ncaj qha rau ntawm qhov chaw ntawm cov kav dej. Nws cov thermal conductivity qis (kwv yees li 0.03-0.05W / (m · K)) tuaj yeem txo qhov poob cua sov thiab tiv thaiv cov txheej rwb thaiv tsev kom tsis txhob kub hnyiab ntawm qhov kub siab (cov txheej rwb thaiv tsev pob zeb ib txwm muaj feem yuav nqus dej noo thiab tsim ntau plua plav, thaum cov ntaub tsis-woven uas muaj oxygenated filament ua ntej sib dua thiab tsis muaj plua plav).
Cov ntaub ntawv lim dej rau kev lag luam (kev lim roj kub siab)
Qhov kub ntawm cov pa roj flue los ntawm cov chaw hlawv pov tseg thiab cov chaw ua hlau tuaj yeem ncav cuag 150-250 ℃, thiab nws muaj cov pa roj acidic (xws li HCl, SO₂). Cov ntaub lim dej ib txwm (xws li polyester, polypropylene) feem ntau yuav mos thiab xeb. Cov ntaub tsis-woven uas muaj oxygenated filament muaj zog tiv taus acid thiab alkali thiab tuaj yeem ua rau hauv cov hnab lim kom ncaj qha lim cov pa roj flue kub siab. Tib lub sijhawm, nws muaj qee qhov kev ua haujlwm khaws cov plua plav thiab feem ntau ua ke nrog PTFE (polytetrafluoroethylene) txheej kom txhim kho kev tiv thaiv xeb.
➤ Lub gasket tiv thaiv kev kho tshuab
Nruab nrab ntawm lub plhaub sab nraud thiab cov khoom sab hauv ntawm cov khoom siv kub siab xws li cav thiab boilers, cov ntaub ntawv gasket yog qhov xav tau los cais cov kev co thiab qhov kub siab. Cov ntaub ntawv tsis-woven uas muaj oxygenated ua ntej tuaj yeem ua rau cov gaskets stamped. Nws qhov kev tiv thaiv kub siab (qhov kub ua haujlwm ntev ≤280 ℃) tuaj yeem tiv thaiv cov gaskets los ntawm kev laus thiab deforming thaum lub sijhawm ua haujlwm ntawm cov khoom siv, thiab tib lub sijhawm buffer mechanical txhuam.
3Cov Khoom Siv Hluav Taws Xob thiab Cov Chaw Ua Haujlwm Zog Tshiab
Cov khoom siv hluav taws xob thiab cov khoom siv hluav taws xob tshiab muaj cov kev cai nruj rau "kev tiv thaiv hluav taws" thiab "kev rwb thaiv tsev" ntawm cov ntaub ntawv. Cov ntaub tsis-woven uas muaj oxygenated filament ua ntej tuaj yeem hloov qee cov ntaub ntawv tiv thaiv hluav taws ib txwm muaj (xws li paj rwb tiv thaiv hluav taws thiab daim ntaub iav fiber)
➤ Cov ntaub thaiv hluav taws kub / cov ntaub thaiv cua sov rau cov roj teeb lithium
Cov roj teeb lithium (tshwj xeeb tshaj yog cov roj teeb fais fab) feem ntau "kub khiav" thaum them ntau dhau lossis luv luv, nrog rau qhov kub nce siab tshaj 300 ℃. Cov ntaub tsis-woven uas tau ua ntej oxygenated tuaj yeem siv ua "kev sib cais kev nyab xeeb" rau cov roj teeb lithium, sandwiled ntawm cov electrodes zoo thiab tsis zoo: nws muaj qee yam khoom rwb thaiv tsev thaum lub sijhawm ua haujlwm ib txwm kom tiv thaiv kev luv luv ntawm cov electrodes zoo thiab tsis zoo. Thaum thermal runaway tshwm sim, nws tsis yaj, tuaj yeem tswj tau qhov ruaj khov ntawm cov qauv, ncua kev sib kis cua sov, thiab txo qhov kev pheej hmoo ntawm hluav taws thiab tawg. Tsis tas li ntawd, sab hauv ntawm lub roj teeb lub plhaub kuj siv cov ntaub tsis-woven uas tau ua ntej oxygenated ua lub ncoo rwb thaiv tsev kom tiv thaiv kev hloov pauv cua sov ntawm cov roj teeb thiab lub plhaub.
➤ Cov ntaub ntawv rwb thaiv tsev rau cov khoom siv hluav taws xob
Cov ntim khoom siv hluav taws xob xws li cov laug cam thiab cov transformers yuav tsum tau rwb thaiv tsev thiab tiv thaiv hluav taws. Cov ntaub tsis-woven uas muaj cov pa oxygenated ua ntej tuaj yeem ua rau cov ntawv rwb thaiv tsev nyias (10-20g / ㎡) thiab lo rau ntawm qhov chaw ntawm cov khoom. Nws qhov kev tiv thaiv kub siab tuaj yeem hloov kho rau qhov cua sov hauv zos thaum lub sijhawm ua haujlwm ntawm cov khoom siv hluav taws xob (xws li qhov kub ua haujlwm ntawm lub transformer ≤180 ℃), thiab tib lub sijhawm ua tau raws li tus qauv UL94 V-0 nplaim taws kom tiv thaiv kev luv luv thiab hluav taws ntawm cov khoom.
4. Lwm cov teb tshwj xeeb
Ntxiv rau cov xwm txheej tseem ceeb saum toj no, cov ntaub tsis-woven uas muaj oxygenated ua ntej kuj tseem ua lub luag haujlwm hauv qee qhov chaw tshwj xeeb thiab niche:
➤Aerospace: Cov khoom siv sib xyaw ua ke uas tiv taus kub thiab txias
Cov khoom sib xyaw ua ke uas tsis hnyav thiab tiv taus kub siab yog qhov xav tau rau cov chav cav ntawm lub dav hlau thiab cov txheej txheem tiv thaiv cua sov ntawm lub dav hlau. Cov ntaub tsis-woven uas tau ua ntej oxidized tuaj yeem siv ua "preform", ua ke nrog cov resins (xws li phenolic resin) los tsim cov khoom sib xyaw. Tom qab carbonization, nws tuaj yeem ua ntxiv rau hauv cov khoom sib xyaw carbon fiber, uas yog siv rau hauv cov khoom siv tiv taus kub siab ntawm lub dav hlau (xws li lub qhov ntswg thiab tis ntug) kom tiv taus kev yaig ntawm cov pa roj kub siab tshaj 500 ℃.
➤ Kev tiv thaiv ib puag ncig: Cov khoom siv lim dej kub thiab txias
Thaum kho cov khoom seem kub siab (nrog qhov kub li ntawm 200-300 ℃) tom qab hlawv cov khib nyiab kho mob thiab cov khib nyiab phom sij, cov khoom siv lim dej yuav tsum tau cais cov khoom seem ntawm cov pa roj. Cov ntaub tsis-woven uas muaj oxygenated filament muaj zog tiv taus corrosion thiab tuaj yeem ua rau hauv cov hnab lim dej los lim cov khoom seem kub siab, tiv thaiv cov khoom lim kom tsis txhob xeb thiab ua tsis tiav. Tib lub sijhawm, nws cov khoom tiv taus hluav taws tiv thaiv cov khoom hluav taws kub hauv cov khoom seem kom tsis txhob kub hnyiab cov khoom lim dej.
➤ Cov khoom siv tiv thaiv: Cov khoom siv rau cov khaub ncaws ua haujlwm tshwj xeeb
Ntxiv rau cov khaub ncaws tua hluav taws, cov khaub ncaws ua haujlwm rau kev ua haujlwm tshwj xeeb xws li metallurgy, vuam, thiab kev lag luam tshuaj lom neeg kuj siv cov ntaub ua ntej-oxygenated filament non-woven ua ib daim ntaub hauv qab ntawm cov khoom yooj yim hnav xws li cuffs thiab necklines kom txhim kho qhov hluav taws kub hauv zos thiab kev tiv thaiv kev hnav, thiab tiv thaiv cov hluav taws xob los ntawm kev kub hnyiab cov khaub ncaws thaum lub sijhawm ua haujlwm.
Hauv kev xaus, qhov tseem ceeb ntawm daim ntawv thovCov ntaub tsis-woven uas muaj cov pa oxygenated ua ntejnyob rau hauv kev cia siab rau nws cov yam ntxwv tseem ceeb ntawm "kev tiv thaiv hluav taws kub + kev tiv thaiv kub siab" los daws cov teeb meem kev nyab xeeb lossis kev ua tsis tau zoo ntawm cov ntaub ntawv ib txwm muaj hauv qhov chaw ib puag ncig hnyav. Nrog kev txhim kho ntawm cov qauv kev nyab xeeb hauv kev lag luam xws li lub zog tshiab thiab kev tsim khoom siab, Nws cov xwm txheej daim ntawv thov yuav nthuav dav mus rau hauv cov teb zoo thiab muaj txiaj ntsig zoo (xws li kev tiv thaiv cov khoom siv hluav taws xob me me thiab kev rwb thaiv tsev ntawm cov khoom siv khaws cia hluav taws xob yooj ywm, thiab lwm yam).
Lub sijhawm tshaj tawm: Cuaj hlis-18-2025