Wetin Mek PTFE Ay-Tɛmpratura Klɔt De Bi Had ɛn Britl Afta Yuz Yuz am fɔ Lɔng Tɛm na Ay Tɛmpratura?

Jiangsu Aokai Nyu Matirial, we na wan sɔs manifakta fɔ PTFE ay-tɛmpracha klos, ɛksplen di hardening ɛn embrittlement fɔ PTFE ay-tɛmpracha klos afta lɔng tɛm ay-tɛmpracha savis frɔm tri pɔynt dɛn: polima chen rilaks, krɔs-linkin, ɛn dɛgradɛshɔn . I fɔ no se di kɔr matirial fɔ PTFE ay-tɛmpracha klos na polytetrafluoroethylene (PTFE), ɛn di analisis we de kam biɛn ya de pe atɛnshɔn pan di maykrostrakchɔral chenj dɛn fɔ PTFE ay-tɛmpracha klos.

I. Molikul Chen Rilaks (Fizikal Aging) .

pan ay tεmprachכ, di mobiliti fכ mכlikul chen dεm na di amorphous rijyכn dεm fכ PTFE hכy tεmprachכ klos de inkrεs, εn dεn de transfכm sכmtεm to wan mכr כda kristכl stet, we de rεsult in hכy kristaliniti. dis chen rilaks prכsεs de ridyus di mobiliti fכ mכlikul sεgmεnt dεm na PTFE hεy tεmprachכ klos, we makroskopik wan de sho as di mεtirial de chenj frכm fleksibul to had εn brital.

II. Krɔs-Linking Riakshɔn

we PTFE ay tεmprachכ klos de εkspos to ay tεmprachכ fכ lכng tεm (especially nia כ pas in כp savis limit), we trays כksijεn כ rεdyushכn de, PTFE mכlikul dεm de lכs fluorine atכm dεm fכ fכm fri radikal dεm, we dεn de trigεr intamכlikul kכros-link. di kכros-link nεtwכk de rεstrikt di rilitiv slaydin fכ mכlikul chen dεm na PTFE hεy-tεmprachכ klos, we de mek i lכs fεksibiliti. Dis na wan pan di ki kemikal rizin fɔ di hardening ɛn embrittlement fɔ PTFE ay-tɛmpracha klos.

III. Riakshɔn we de mek pɔsin nɔ gɛt bɛtɛ trɛnk

we di tεmprachכ hכy כ we כksijεn de, di men chen dεm na di PTFE ay tεmprachכ klos de brok εn dεgrad, we de prodyuz lכw mכlikul-weyt fragmεnt dεm εn rilis fכrayd gas dεm. Pan ɔl we di matirial kin sof fɔs, we i kɔntinyu fɔ pwɛl, dat kin mek di mɔlikul wet go dɔŋ shap ɛn i kin pwɛl di ɔrijinal kristalin strɔkchɔ. Eventually, di surface of PTFE high-temperature cloth powders, krak, ɛn sho irreversible embrittlement.

Sɔmari : We dɛn ɔt PTFE ay-tɛmpracha klos fɔ lɔng tɛm, chen rilaks (kristalayzeshɔn) ɛn krɔs-link togɛda kin mek i at ɛn lɔs di tafnɛs; כnda harsh kכndishכn, dεgradashכn de pwεl di strכkchכral integriti mכr. Di kɔmbaynshɔn fɔ dɛn tri tin ya kin mek PTFE ay-tɛmpracha klos at ɛn brit.

Di infɔmeshɔn we de ɔp na Jiangsu Aokai Nyu Matirial Tɛknɔlɔji Kɔmni, Ltd.

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