Wetin Mek PTFE Tep kin Mek I Adheshon Witout Failure na High-Temperature Envairomɛnt?

Di PTFE ay-tɛmpracha tep we Jiangsu Aokai Nyu Matirial dɛn mek de yuz silikon prɛshɔn-sɛnsitiv adeziv, we kin wok stebul na 250°C fɔ lɔng tɛm. Di men rizin dɛn de insay dɛn tri pɔynt dɛn ya:

1. Di Men Chen Na Si–O Bɔnd wit Ay Tɛmral Dikɔmpɔzishɔn Tɛmpratura

Di mכlikul men chen fכ di silikon prεshכn-sεnsitiv adhesive in PTFE hεy-tεmprachכ tεp gεt Si O Si O strכkchכ. di bond enεji fכ di Si–O bond na lεk 445 kJ/mol, we bכku hכy pas di C–C bond (bכt 348 kJ/mol) כ C–H bond (bכt 413 kJ/mol) insay kכmכn כrganik polimכr dεm lεk akrilet εn rכba.

pan ay tεmprachכ, C–C bכnd dεm izi fכ brok εn trigεr chen dεgradashכn, we Si–O bכnd dεm nid bכku hכy εnεji fכ rכp. כl dis mek di mכlikul mεn chen fכ di silikon PSA de stil intakt na 250°C, we de avכyd di adheshon lכs we kכz fכ tεmral-oksidativ dεgradashכn.

2. Chemical Cross-Linking Network Prevents Softening and Flow at High Temperatures

Silikɔn rɔba we nɔ krɔslink kin tɔn to viskɔs likwid we i gɛt ay tɛmpracha ɛn i kin lɔs di trɛnk we i kin jɔyn togɛda ɔltogɛda. כltu, di silikon PSA insay PTFE hεy-tεmprachכ tεp de kכroslink via pεrכksayd kכroslink כ platina-katalayz adishכn kכroslink, we de kכnekt linya mכlikul chen dεm insay wan stebul tri-dimεnshכnal nεtwכk.

dis kכroslink strכkchכ de alaw di adhesive layεr fכ mεnten sכlid εlastik bihayvya na 250°C we nכ mεlt כ fכ fכlכ lεk tεmכplastik mεtirial dεm. ivin wit sכm dεkrεshכn in mכdulus, i stil de rεtεn inof kכhεsiv trεnk fכ rεsist pεl.

3. Lɔw Glas Transishɔn Tɛmpratura (Tg ~ −120°C) .

di silikon PSA insay PTFE hεy-tεmprachכ tεp gεt wan vεri lכw Tg (aprכksimatli −120°C), we min se in mכlikul chen dεm de stil insay wan hεli εlastik stet akrays wan wayd tεmprachכ rεnj frכm −70°C to 300°C, pas wan britl glasi stet.

So, we di tεmprachכ ay, di adhesive layεr nכ de at fכ lכs wet abiliti כ sכft fכ fכ fכlכ pasmak. i de mεnten wan mכdarεt mכdulus (stכrej mכdulus G' ≈ 104–106 Pa), we na di optimal winda fכ prεshכn-sεnsitiv adheshon.

silikon PSA insεf gεt lכw sכfayz εnεji (arawnd 22 mN/m), we de mek i ebul fכ wet lכw-sכfεs-εnεji sabstεrayt lεk PTFE εn silikon rכba fayn fayn wan ivin pan hכy tεmprachכ — we de mek i nכ de dibכnd we kכz fכ pwεl sכfayz εnεji mεch.

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

Fɔ ditayl paramita, aplikeshɔn sɛnɛriɔ ɛn kɔstɔmayz sɔlvishɔn fɔ wi ful prodak rɛnj — inklud PTFE ay-tɛmpracha klos, PTFE ay-tɛmpracha tep, PTFE ay-tɛmpracha mɛsh bɛlt, simlɛs bɛlt fɔ lamin mashin dɛn, singl-sayd PTFE klos, ay-tɛmpracha rɛsistant kɔnvaysɔ bɛlt ɛn ay-tɛmpracha fayvglas klot — duya kɔntakt wi via:

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