Teflon ýokary temperaturaly lentanyň ýelim gatlagynyň bitewi güýjüniň üýtgemeginiň nusgasy.

I.PatternofChangeinAdhesiveLayerCohesionUnderHigh-TemperatureAging

Bejergiden soňky basgançak: Iň ýokary temperatura täsir etmek (meselem, 200–260 ° C), galyndy reaktiw toparlar kontontinuetokross-baglanyşyk, öňdebaryjy ähmiýeti ýokarlandyryjy birleşme.

Durnukly deňagramlylyk basgançagy: Çekişme baglanyşyklary gutarmak, we birleşmek üçin niýetlenen durnuksyz döwür. Döwrebap sahna.

Degradasiýa we deklinestage: Düşünmedik wagt temperaturasy, tematiki zynjyrlar degrasiýa, yzygiderli birleşmeklige sebäp bolýar.

II.RootCausesofCohesiveFailureandAdhesiveSqueeze-Out

Esasy sebäpler

“Rootcauseofsqueeze-out”: “Atelevatedtemperaturalar”, “temodulusdecreases” we “Headhesivelayerundergoescoldflow”, “Tehniki”, “termalstress”.

“Relationshipbetweenthetwo”: Bir wagtyň özünde uzak möhletli degradasiýa “exacerbatesbothissuessessessess”;

III.PreventionThroughAdhesiveFormulationandProcess

Formulasiýa dizaýny: Ulanyjy-fenilsilikon, iş bilen üpjün etmek-egrelmek ulgamy, “prisecross-linking” kontrol, balansMQresinratios, goşmaça güýçlendiriji doldurgyçlar we eliminatelow-molekulýar-agyrlyk plastifikatorlary.

Örtük we berkitme: Iň ýokary derejeli post-bejeriş bejergisi-molekulýar-agyrlyk maddalary we öňüni alyş-berkitme-birinji derejeli ekspozisiýa.

Heselimleýjiniň gurluşy: Theadhesivethicknessshouldbekeptthin (≤25μm), we0.5–1mmadhesive-freesafetymarginshouldbeprovidedattheedgestofhysicallyblocksqueeze-out.

IV.PreventionThroughSubstrateandOperatingConditions

Substrateanchoring: PTFEfilmrequiresetchingorplasmatreatment, kombinirlenen whaprimertomatchinterfacialandcohesivestrengths, artykmaç anchoringthatcouldleadtocohesivefailure-iň öňüni alýar.

Temperaturecontrol: Strictlyfollowtheratedtemperaturespecifications foruse, appgradualstepwiseheating we andavoidthermalshock.

Saklamak we işlemek: “Storeflatatlowtemperaturestopreventcoldflow”, “lettetapetoreturntoroomtemperaturebeforeuse” we “ensurethebondingsurfaceiscleanandfreeofoil”.

Theaboveinformasiýa berilýärJiangsuOKNewMaterialTechnologyCo., Ltd.

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