Ozone Aging Resistance ntawm PTFE High-Temperature Cloth

Jiangsu Aokai Cov Khoom Tshiab, cov chaw tsim khoom thiab cov chaw tsim khoom ntawm PTFE cov ntaub ntawv kub kub, muab cov ncauj lus kom ntxaws rau koj. Polytetrafluoroethylene (PTFE) coated fiberglass daim ntaub nta zoo heev tshuaj inertness thiab feem ntau xa zoo ozone aging kuj. Txawm li cas los xij, nws tsis muaj kev tiv thaiv tag nrho rau ozone yaig, thiab nws qhov kev ua tau zoo tag nrho yog cuam tshuam los ntawm ozone concentration, ambient kub, tsis tu ncua sijhawm raug thiab lwm yam sab nraud.

Ua tsaug rau nws cov qauv molecular tshwj xeeb, PTFE nthuav tawm muaj zog ozone tsis kam raws li tus qauv. Lub siab fluorinated carbon-fluorine (CF) daim ntawv cog lus boasts lub zog siab heev ntawm kwv yees li 485 kJ / mol. Meanwhile, its spiral molecular structure forms a dense protective shield of fluorine atoms, preventing strong oxidants such as ozone from attacking the internal carbon-carbon (CC) main molecular chain.

Txawm li cas los xij, ozone tuaj yeem hloov pauv cov yam ntxwv saum npoo ntawm PTFE thiab ua rau muaj kev hloov pauv tshuaj lom neeg thiab lub cev. Cov kev tshawb fawb tau pom tias PTFE raug rau ozone muaj kev sib txhuam coefficient txog peb zaug siab dua li nyob rau hauv ib puag ncig huab cua, nrog rau cov cim pom tseeb. Qhov no feem ntau yog tshwm sim los ntawm ozone-induced nto oxidation, molecular bond breakage thiab cov khoom softening.

Nrog rau lub sij hawm ntev raug rau ozone, tshwj xeeb tshaj yog nyob rau hauv hnyav ua hauj lwm tej yam kev mob xws li kub thiab siab ozone concentration, PTFE high-temperature ntaub yuav maj mam tsim los ntawm microscopic kev puas tsuaj rau macroscopic functional tsis ua hauj lwm, nrog rau tej yam tsis ua hauj lwm manifestations raws li nram no:

Molecular saw breakage thiab degradation Ozone fractures CC molecular chains ntawm PTFE thiab tsim me me molecular fragments xws li carbon tetrafluoride (CF₄) thiab carbonyl fluoride (COF₂). Qhov no ua rau txo qhov hnyav molecular thiab kev ua haujlwm tseem ceeb ntawm cov khoom siv.

Deg cracking thiab embrittlement Nws yog qhov feem ntau intuitive aging tshwm sim. Cov khoom poob saum npoo yooj yim thiab ua rau lub network zoo li cov kab nrib pleb hauv kev ntxhov siab, uas yog ozone tawg. Cov ntaub yuav tawv thiab nkig, thiab kev laus loj yuav ua rau pulverization thiab kev puas tsuaj ntawm cov qauv.

Kev poob qis hauv cov khoom siv khoom siv degradation tsis tu ncua txo lub zog tensile, elongation ntawm kev tawg, elasticity thiab lwm yam tseem ceeb mechanical indicators. Tom qab qhov chaw pulverization, tev thiab txo cov thickness yuav ntxiv tsis muaj zog hnav tsis kam thiab cov qauv kev ruaj ntseg.

Deterioration ntawm cov yam ntxwv ntawm cov khoom siv tshuaj lom neeg kev puas tsuaj hloov cov tsis tseem ceeb xws li lub zog nto thiab lub kaum sab xis ntub dej. Microscopic kab nrib pleb thiab pores tsim los ntawm ozone yaig yuav nthuav loj, zoo heev ua rau cov thawj sealing thiab kev sib cais kev ua tau zoo.

Lub ozone tsis kam ntawm PTFE high-temperature daim ntaub tsis tsuas yog txiav txim los ntawm lub hauv paus khoom nws tus kheej. ambient kub, ua ke nrog cov laus laus thiab lwm yam kev mob sab nraud kuj ua lub luag haujlwm txiav txim siab hauv nws lub neej ua haujlwm.

Kub kub heev accelerates ozone degradation. Nyob rau hauv qhov kub thiab txias, lub zog oxidation ntawm ozone intensifies lub molecular saw degradation ntawm PTFE. Yog li ntawd, lub sij hawm ntev kev pab cuam kub txwv ntawm PTFE cov khoom poob sharply los ntawm 260 ℃ nyob rau hauv cov pa pa mus rau 200 ℃ – 220 ℃ nyob rau hauv ozone thiab muaj zog oxidizing gas ib puag ncig.

Muaj kev sib koom ua ke ntawm kev laus  ntawm ozone thiab ultraviolet rays. Hauv cov xwm txheej sab nraud, kev sib xyaw ntawm UV hluav taws xob thiab ozone ua rau muaj kev puas tsuaj loj dua li ntawm ib qho.

Tsis tas li ntawd, cov khoom zoo sib txawv los ntawm cov chaw tsim khoom. Qhov sib txawv ntawm cov txheej txheem ntau lawm, txheej tuab thiab cov qauv tsim (xws li kev sib ntxiv ntawm cov tshuaj tiv thaiv oxidant stabilizers) yuav ua rau pom tseeb qhov tsis sib xws ntawm cov ozone nyob rau lub sijhawm ntev ntawm cov khoom sib txawv ntawm PTFE high-temperature daim ntaub.

Txoj kev siv tau los txhim kho Ozone Aging Resistance

1. Ntxiv cov tshuaj antioxidants siab thiab lub teeb stabilizers rau PTFE cov mis kom ntes cov dawb radicals thiab ncua oxidative degradation.

2. Txais kev kho qhov chaw kho kom zoo nkauj los tsim cov txheej txheem tiv thaiv densified thiab txhim khu kev tiv thaiv oxidizing roj yaig.

3. Txhim kho cov kev siv tiag tiag: tswj kev ua haujlwm kub hauv qab 200 ℃, thiab zam kev ua haujlwm ntev nyob rau hauv ib puag ncig uas muaj siab ozone thiab khaus ultraviolet hluav taws xob.

Cov ntsiab lus

PTFE high-temperature daim ntaub ua haujlwm ruaj khov thiab zoo heev ntawm chav tsev kub thiab qis ozone concentration. Txawm li cas los xij, oxidative degradation, nto cracking, embrittlement thiab kev ua tau zoo poob qis yuav tshwm sim nyob rau hauv high-temperature, high-ozone los yog UV-coupled hnyav ib puag ncig. Kev tswj hwm ib puag ncig tsim nyog thiab kev hloov kho cov khoom siv tuaj yeem ua rau qeeb kev laus thiab ua kom lub neej ntev ntawm cov khoom.

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

Yog tias koj xav tau cov txheej txheem ntxiv, kev daws teeb meem thiab cov kev pabcuam customized rau peb cov khoom lag luam, suav nrog PTFE high-temperature daim ntaub, PTFE high-temperature adhesive daim kab xev, PTFE mesh conveyor siv, seamless bonding tshuab siv, ib leeg-sided fluorine-coated daim ntaub, high-temperature resistant conveyor siv thiab high-temperature contact: fiber ntau.

·  Mr. Guo: +86 18944819998

·  Mr. Liu: +86 13705266308

Peb ib txwm ua raws li kev lag luam lub tswv yim ntawm kev tshaj lij thiab kev ncaj ncees, thiab muab cov kev daws teeb meem ib zaug thiab xav txog kev pab cuam tom qab muag rau cov neeg siv khoom thoob ntiaj teb.