Vim li cas PTFE High-Temperature Fabric Flame-Resistant nyob rau hauv Qhib Hluav Taws? Nws Microscopic Flame-Retardant Mechanism yog dab tsi?

Jiangsu Aokai Cov Khoom Tshiab, cov chaw tsim khoom ntawm PTFE cov ntaub ntawv kub kub, piav qhia:

PTFE high-temperature npuag yog nplaim taws-resistant nyob rau hauv qhib hluav taws, feem ntau yog vim lub molecular qauv thiab thermal decomposition mechanism ntawm nws cov khoom tseem ceeb - polytetrafluoroethylene (PTFE). Nws cov nplaim retardancy tsis cia siab rau cov nplaim hluav taws xob ntxiv zoo li cov khoom siv zoo tib yam, tab sis yog los ntawm nws cov tshuaj inertness inertness thiab nws tus cwj pwm decomposition.

Qhov no tuaj yeem nkag siab los ntawm peb theem:

1. Muaj zog Molecular 'Armour': Siab Bond Zog thiab cov txheej tiv thaiv

·  Muaj zog carbon-fluorine (C-F) bonds : PTFE molecules muaj ib tug carbon saw caj qaum nruj nreem kaw los ntawm fluorine atoms. C-F daim ntawv cog lus yog ib qho ntawm cov khoom siv tshuaj muaj zog tshaj plaws, nrog rau lub zog ntawm kwv yees li 485 kJ / mol. Lub zog siab heev (kub) yuav tsum tau tawg, ua thawj kab ntawm kev tiv thaiv.

·  Shielding effect of fluorine atoms : Large, negatively charged fluorine atoms are densely packed, acting as a thick armour that fully encloses the inner carbon chain. Qhov kev thaiv no tiv thaiv cov tshuaj lom neeg feem ntau (xws li cov pa oxygen) los ntawm kev nkag mus rau cov saw hlau thiab tiv thaiv cov tshuaj tiv thaiv oxidation uas tsim nyog rau combustion.

2. Tsis-Combustible Decomposition: Depolymerization hloov kub

·  Cov saw tawg ua ntej oxidation : Nyob rau hauv qhov kub thiab txias, qhov tsis muaj zog carbon-carbon (C-C) bonds nyob rau hauv PTFE so ua ntej C-F bonds. Molecular chains pib decompose ua ntej cov pa oxygen tuaj yeem koom nrog cov tshuaj tiv thaiv.

·  Cov khoom tseem ceeb yog monomer : Thaum tawg, PTFE feem ntau dhau mus depolymerization , tso tetrafluoroethylene (C₂F₄) monomers los ntawm cov saw xaus. Cov khoom vaporizes ntau dua li kev sib tsoo hnyav uas tso tawm ntau cov cua sov thiab cov pa hluav taws xob.

·  Gas-phase barrier effect : C₂F₄ gas los ntawm depolymerization yog denser tshaj huab cua thiab nyob ze ntawm qhov chaw, tsim ib ntus gaseous txheej uas dilutes oxygen concentration thiab ntxiv suppresses combustion.

3. Txhawb nqa lub luag haujlwm ntawm iav Fiber Substrate

PTFE high-temperature npuag yog cov khoom sib xyaw ua los ntawm txheej PTFE rau iav fiber ntau daim ntaub. Iav fiber nws tus kheej yog cov khoom tsis-flammable inorganic. Raws li cov txheej txheem pob txha, nws ua kom ntseeg tau tias txawm tias cov txheej txheem PTFE tau siv tag nrho hauv cov cua sov, cov khoom tsis yaj los yog poob zoo li cov yas ntshiab, tswj cov txheej txheem kev ncaj ncees thiab tiv thaiv cov nplaim taws.

Nws yuav tsum tau hais tias PTFE yog nplaim hluav taws , tsis yog-flammable tag nrho.Thaum rhuab saum nws melting point (327 ° C) thiab tsis tu ncua, nws decomposes thiab tso pa phem. Nws feem ntau tiv taus qhov kub ntev mus txog 260 ° C thiab nyob ruaj khov luv ntawm 300-360 ° C.

Decomposition nyob rau hauv qhib hluav taws : Thaum ncaj qha mus rau qhib hluav taws (nyob deb tshaj nws cov decomposition kub), PTFE txheej decomposes, tab sis cov txheej txheem tsis tsim kom muaj cua sov txaus los yog combustibles los txhawb combustion. Ua ke nrog kev txhawb nqa iav fiber ntau, nplaim taws tsis tuaj yeem kis mus tas li.

Nyob rau hauv cov ntsiab lus, PTFE high-temperature npuag yog nplaim-resistant vim nws cov khoom tseem ceeb PTFE yog molecularly tsim los tiv thaiv combustion .High-zog tshuaj bonds, cim decomposition txoj kev, thiab cov tsis-flammable iav fiber skeleton ua ke ua ib tug muaj zog fireproof barrier.

Cov ntaub ntawv saum toj no yog muab los ntawm Jiangsu Aokai New Materials Technology Co., Ltd.

Rau cov ncauj lus kom ntxaws, daim ntawv thov scenarios thiab customized kev daws teeb meem ntawm peb cov khoom tag nrho - suav nrog PTFE high-temperature npuag, PTFE high-temperature tape, PTFE high-temperature mesh belt, seamless belt for bonding machines, one-sided PTFE fabric, high-temperature resistant conveyor belt, high-temperature contact us: fiberglass resistant fiber ntau

●  Mr. Guo: 18944819998

●  Mr. Liu: 13705266308

Peb txhawb nqa lub tswv yim kev tshaj lij thiab kev pabcuam ncaj ncees, thiab mob siab rau muab kev daws teeb meem rau koj ib leeg thiab kev pabcuam zoo!