Ndedzipi shanduko yezvimiro inoitika muPTFE yakakwirira-tembiricha jira panguva yekuchembera?

PTFEhigh-temperaturefabricisacompositematerialmadebyipregnatingorcoating glassfiberbasefabriric withpolytetrafluoroethylene(PTFE).

Kuratidzira kwepasi kwenguva refu kune tembiricha yakakwira, thermo-oxidativeconditions, ultraviolet mwaranzi, uye machanicha stress, maumbirwo ayo pasi peinodzokororwa aging anoshanduka kubva kumolecular tothemacroscopiclevel.

I.MicrostructuralChangesinthePTFECoating

Molecularchaindegradationandoxidation: Thecarbon-fluorinemainchain undergoescheinscission,depolymerization,andoxidation,zvichikonzera kuderera kwemamolecular uremu uye kuumbwa kwemapoka epolarsuchascarbonylandcarboxylgroupsatchainends.Izvi zvinowedzera pamusoro pesimba uye zvinoderedza hunhu husiri hwemvura.

Shandukoincrystallinity: Macheni mapfupi ari pasi pesecondarycrystallization.Munhanho yekutanga,ukuru hwekristaro hunokura zvisingaite,zvichikonzera kuti kupfekedza kuome uye kuderera zvakanyanya.

Kushata kwemicroscopicmorphology: Kushatisa uye kuderera kwemukadzikadzi kubereka akawanda madiki-diki nemapini maburi, kugadzira nzira dzekuora. Inseverecases, the coating pamusoro peupfu uye PTFEparticles detach.

II.Structural ShandukoGlassFiberSubstrateandInterface

Failureoffibersizing/couplingagents: Silanecouplingagentororganicsizingagentsontheglass fibersurface decompose and carbonizeareightemperatures kutanga,zvichikonzera kufirwa kwekemikaribhondinemechini kuvharirana kusimba pakati pePTFEnefiber yegirazi.

Interfacial debonding uye kumisa: Mushure mekubatana kwechiso, musiyano wekuwedzera kwemafuta ekuwedzera pakati pePTFE negirazi fiber inogadzira thethermalstress, inotungamira kupeenga nekuparadzana kweiyo yekupfeka kubva pamucheka, mhedzisiro yekupupa, delamination, uye yakasarudzika nzvimbo dzakachena.

Kushatisa kwegirazi fiber pachayo: Kupisa kwesandangu alkaline zvinhu zvinoparadza girazi network, zvichikonzera micro-cracksonthefiber pamusoro pechiso uye kupfupika. Zvichakadaro, alkalimetaloxide mugirazi fibre inopfuudza kutonhora kusingaite, inokonzera kuomarara kunokanganisa zvakanyanya uye kunowedzera kukurumidza kusimba.

III.ShandukoMakrosikopuChimiroNekuonekwa

Kuchinja kweruvara: Hunhu hunochinja zvishoma nezvishoma kubva kuchena kwacho kweruvara rwebeige, bhurawuni, kana dema dema, zvichibva pacarbonization yeinterfaciallayer, kunamira kwezvinosvibisa organic, uye zvakasara zvigadzirwa kubva kudiki PTFE kuderera.

Dimensional kugadzikana uye flattness: Shrinkagedeformation inoitika, the fabricur face inova yakaenzana, andedgescurl.

Surfaceroughening: Thesmoothfeelness inonyangarika,uye iyo uso unobva washaya gloss.Inseverecases,upfu hunoonekwa pawakabatwa,inoratidzaPTFEupfu.

Mechanicalstructural collapse: Thepatic inorasikirwa zvachose kuchinjika uye kuputsika.

IV. Zvinokosha zveKukwegura

Zviri pamusoro zvinoumba muitiro unofambira mberi pamwe chete, chimiro chose chinova chisina kusimba,hupfu, uye chinoparadzana.Kudzora tembiricha yekushanda,kunzvenga kudengenyeka kunobva mukupisa nekutonhodza, uye kudzivirira kusangana nesanguhadhasiasidhikasi inogona kunyatsodzikisira maitiro ekugadzira.

Ruzivo rwuri pamusoro rwunopihwa naJiangsuOKNewMaterialTechnologyCo.,Ltd.

Kana uchida kudzidza zvakawanda pamusoro pezvinotsanangurwa, mashandisirwo emamiriro ekushandisa, uye magadzirirwo sarudzo dzezvedu zvizere zvezvigadzirwa-kusanganisiraPTFEhigh-temperature fabric,PTFEhigh-temperature tepi,Teflonhigh -tembiricha yemesh mabhandi,isina musonomabhandi epamusoro pezvitsigiro,imwechete diviPTFEfabric,high-temperatureconveyorbets,uyehigh-temperaturefiberglassfabric-ndapota inzwa wakasununguka kubata kuburikidza neanotevera nzira:

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