Ni izihe mpinduka zubaka zibaho muri PTFE yubushyuhe bwo hejuru mugihe cyo gusaza?

PTFEhigh-ubushyuhefabricisacompositematerialmadebyimpregnatingorcoatingglassfiberbasefabricwithpolytetrafluoroethylene (PTFE).

Ubushyuhe bukabije, ubushyuhe bwa termo-okiside, ultravioletradiation, hamwe na mashini ya mashini, imiterere yububiko bwayo

I.MicrostructuralChangesinthePTFECoating

Molecularchaindegradationandoxidation: Carcarbon-fluorinemainchainundergoeschainscission, depolymerisation, naoxidation, bivamoadecreaseinmolecularweight hamwe namakuru yamakuru ya polargroupssuchascarbonylandcarboxylgroupsatchainends.Thisincreasessurfaceenergyandroperties

Impinduka zinyuranye: Gucisha bugufiGusekondarycrystallisation.Icyiciro cyambere, kristalliniterisesibisanzwe, bitera thecoatingtobecomeharderandmorebrittle.

Kwangirika kwa :mikorosikopi

II

Failureoffibersizing / guhuza: Silanecouplingagentsororganicsizingagentsontheglassfibersurfacedecomposeandcarbonizeathightemperaturesfirst, bitera helosofchemicalbonding na mikoranike yo gufatanya hagati ya PTFEandtheglassfiber.

Interfacialdebondinganddelamination: Nyuma yimikorere idahwitse, itandukanyirizo ryimyitozo ngororamubiri hagati ya PTFEandglassfibergeneratesthermalstress, kuyobora topeelingandseparationofcoatingfricafrica, bikavamo gutondeka, gusiba, no gusobanura.

Gutesha agaciro ibyerekezo: Hightemperaturesandalkalinesubstanceserodetheglassnetwork, itera mikorobe-cracksonthefibersurfaceandembrittlement. Hagati aho, alkalimetaloxidesintheglassfiberprecipitateathightemperatures, incingstresscorrosion

III.ChangesinMacroscopic Imiterere nuburyo bugaragara

Guhindura amabara: Thematerialgraduallychangesfromwhiteoritsnaturalcolortobeige, umukara, orevenblack, bivamo carbonisiyonike yimikorere yimikino, adhesionoforganiccontaminants, hamwe na progaramu yumusaruro uva kuriPTFEdegradation.

Dimensionalstability andflatness: Shrinkagedeformationoccurs, thefabricsurfacebecomesuneven, andedgescurl.

Surfaceroughening: Thesmoothfeeldisappears, andthesurfacebecomesroughandlosesitsgloss.

Mechanicalstructuralcollapse: Thematerialcompletelylosesflexibility andbreaksuponfolding.

IV

Theabovechangesconstituteaprogressiveprocessof 'coatingdegradation → interacialfailure → substratedegradation. ' PTFElosesitsinertnessanddevelopscrack; mately, theentirestructurebecomesbrittle, ifu, nadisintegrates.Gucunga igenzura ryubushuhe, kwirinda imiti yubushakashatsi bwimbaraga, hamwe no gukumira ibicuruzwa, hamwe no kwirinda

TheaboveinformationisprovidedbyJiangsuOKNewMaterialIkoranabuhangaCo., Ltd.

Niba wongeyeho -temperaturemeshbelts, seamlessbeltingforadhesivepresses, uruhande rumwePTFEfabric, ubushyuhe bwo hejuru cyane, hamwe nubushyuhe bwo hejuru -ibikoresho byimbaraga-nyamuneka-nyamuneka

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