PTFEhigh-temperature fabricisacompositematerial we dɛn mek bay we dɛn impregnate ɔ kɔt glas fayba baysfabrik wit politetrafluoroethylene(PTFE).
כndaprolכng εkspכzכn to ay tεmprachכ, tεmכ- כksidεtiv kכndishכn, כltravayכl tradishכn, εn mεkanikal strεs, in strכkchכ כndagεs rεvεrsibl εjεjchεnj frכm di mכlikul to di makroskכpiklvεl.Manufacturers כf PTFEhay-tεmprachכfabrikan dεn כndastand dis prכsεs tru dεn fכs fכs spεkt dεm:
I.MaykrostrɔkchɔralChɛnjsin diPTFEKɔtin
Mכlikul chen dεgradashכn εn כksidεshכn: Di kabכn-fכrin mεnchεn de כnda chen sεshכn, dipכlimεrayzeshכn, εn כksidεshכn, we de rεsultin dεkrεs in mכlikul wεyt εn di fכmeshכn כf polar grup dεm we na skarbonyland kכbכksilgrכp na chen εnd dεm.Dis de inkrεs sכrfεs εnεji εn de ridyus nכn-stik prכpati εn haydrofobisiti.
Chenjsinkristaliniti: Sכtchεn segmεnt dεm כnda sεkכndari kristכlayzeshn.Insay di εli stej, kristaliniti de rayz abnכmal wan, we de mek di kכt bi had εn mכr brit.As dεgradashכn de intensify, di kristכlin rijyכn de dεstroy εn di strכkchכ kכlaps.
Failureoffibersazing/couplingagents: Silanecouplingagentssororganicszingingagentssontheglassfibersurfacedcomposeandcarbonizeathight temperatures fɔs, we de mek dɛn lɔs di kemikalbɔndin ɛn mɛkanikal intalɔkfɔs bitwin PTFE ɛn di glasfayba.
Intafeshal dibondin ɛn di laminɛshɔn: Afta intafeshal fayl, di difrɛns insay tɛmal ɛkspɛnshɔn kɔfishin bitwin PTFE ɛn glas fayba de jenarayz tɛmal strɛs, we de lid topilin ɛn separeshɔn pan di kɔtin frɔm di fabrik, we de rilizɔt inblistering, dilaminɛshɔn, ɛn we dɛn dɔn ɛksplɔz wayt eria dɛn.
Dεgradashכn כf di glas fayba insεf: Ay tεmprachכ sεndalkalayn sכbstans dεm de sכk di glas nεtwכk, we de mek maykro-krak pan di fayba sכfεs εn brit.
III.ChenjsinMakroskopikStrɔkchɔ ɛn Apɛndiks
Kɔlɔchɛnj: Di matirial de chenj smɔl smɔl frɔm wayt ɔ natural kɔlɔ to beij, brawn, ɔ ivin blak, we de rilizɔt frɔm kabɔnayzeshɔn ɔf di intafays layt, adheshon ɔf ɔrganik kɔntaminɛnt, ɛn sidyual prodakt frɔm minɔrPTFEdigradɛshɔn.
Dimensionalstabilityand flatness: Shrinkagedeformationoccurs,difabriks surfacebicomesuneven,anddgescurl.Dis na di rizin fɔ mɔlikul chen disoriɛnteshɔn ɛn intafays strɛs rilis.
Surfaceroughening: Di smol smol fil de disappear, en di surface decomerough en lossesitsgloss.In sevεr kes dεm, dεn de si pauda we dεn tכch am, we de sho se PTFEpowdering.
Mεkanikal strכkchכral kכlaps: Di mεtirial kכmplitli lכsfleksibiliti εn brεk pan fold.Di kכt εkstensivli separet frכm di bεsfabrik, we de rizulta intotalכsכfכnshכnaliti.
IV.Di Esεns כf diAgingProses
Di chenj dεm we de oba kכnstכt wan prכgrεsiv prכsεs כf'kכtin dεgradashכn→intafεshal fεil→sabstεrayt dεgradashכn.'PTFElכs sizin nεt εn de divεlכp krak; di glas fayba intafεys de dεstroy bifo di fayba bכdi insεf, we de lid to dεlaminεshכn; כlti mately,di entire ristructurecomes brittle,powder,and disintegrates.Kɔntrol di ɔpreshɔn tɛmpracha, avɔyd tɛmalshɔk frɔm rɔpiddɛtin ɛn kol, ɛn prɛvɛnt kɔntakt wit asid sandalkaliskan ɛfɛktiv wan slowdɔwn dis strɔkchɔral ej prɔses.
