PTFE theipi bakeng sa lik'hemik'hale phaephe / sejana-ba khahlanong le tšilafalo, bao e seng khomarela, le tiiso tšireletso hloka tšoanang substrate, sekgomaretsi tsamaiso, le lik'hemik'hale mecha ea litaba. Silicone PSA e kgothaletšwa go 200-260°C ka diesiti/alkali; acrylic PSA e ganetša disolvent tša organic eupša e lekanyetša themperetšha go ≤150°C. Bakeng sa HF, go bela >80% ya alkali, goba chlorine trifluoride, šomiša PTFE-feela lera (ga go na sekgomaretši sa organic). Bohlokwa: sekgomaretši ke kgokagano e fokolago kudu, e sego PTFE ka boyona.

PTFE theipi tšoara matla e ntlafatsoa ka tlotsa le phekola tshebetso optimization. Coating: primer lera (0.5-2μm silane primer thibela sekgomaretsi peeling), sekgomaretsi botenya 30-60μm (optimal bakeng sa tšoara matla), lefeela defoaming, le 5-10μm filtration. Go fodiša: go ruthetša ka dikgato (80-100°C go tlošwa ga solvent → 120-140°C go bopa → 150-220°C go kgokaganya sefapano ka mo go tseneletšego), go fodiša ka morago (40-60°C bakeng sa 24-48h go iketla), le phetišetšo ya kgatelelo ya fase go thibela kgateletšego ya ka gare go tšwa go go fokotšega ga substrate. Primer e bohlokwa bakeng sa matla a tlase a bokagodimo bja PTFE.

PTFE phahameng-mocheso theipi sebeletsa e le thepa bohlokoa ka semiconductor tlhahiso, eseng ka kakaretso-morero consumable. Dikopo senotlolo: wafer-boemo ba tshireletso (plasma etching masking, CMP backside tšireletso, CVD / PVD masking), dithulaganyo ambalaji (terata tlamang fixation, soldering maske bakeng sa PCBs), le thepa tlhokomelo (anti-static rolara phuthela, cleanroom tšoaea). Dinyakwa tše di hlwekilego kudu: di-halogen tša fase (e thibela go tšhungwa ga sepetlele sa kgokagano), di-siloxanes tša fase (<500 ppm, e thibela go bopega ga dikarolwana tša go thibela), di-ion tša tšhipi tša fase (<1 ppm ye nngwe le ye nngwe), go arola/go phuthela ka phapošing ye e hlwekilego ya ISO Class 4, go ganetša ga bokagodimo bja 106-109 Ω, le go ntšhwa ga TVOC ya fase.

Theipi ya themperetšha ya godimo ya PTFE ya maemo a bongaka e kopanya substrate ya PTFE yeo e sepelelanago le diphedi le sekgomaretši sa silicone seo se fodišitšwego ka polatinamo. Dikarolo tše bohlokwa: ISO 10993 e obamela (ga go na cytotoxicity, sensitization, goba go hlohlona), e kgotlelela go sterilization gape le gape (mouwane/EO/gamma), go ganetša phišo ya 260°C. Ditšhireletšo tše bohlokwa: o se ke wa feta 260°C (muši wa mpholo ka godimo ga 300°C), mahlasedi a gamma a ka hlola embrittlement, a netefatša mekgwa ya go sterilization, le go kgopela ditokomane tša kobamelo ka botlalo (dipego tša ISO 10993, MSDS, ya data ya botšofadi). E sego bakeng sa go dirišwa ga madi ka go lebanya goba go tsenywa ga mmele ntle le ge e tiišeditšwe ka mo go kgethegilego.

PTFE theipi reusability itšetlehile ka mabaka a mane: sekgomaretsi tlhamo (phahameng crosslink segokanyipalo, tlaase silicone falla, microphase sebopeho bakeng sa repositionable tack), substrate anchoring (bokagodimo kenya tshebetsong + primer ho thibela feletseng sekgomaretsi phetiso), backside tlotsa (lokollo lera ho sireletsa sekgomaretsi nakong unwinding), le tšoara e nepahetseng (hloekileng sekgomaretsi bokagodimo, nepahetseng peeling thekniki, qoba themperetšha ya go feta tekano). Dikgomaretši tše di fetotšwego tšeo di hlatswiwago ka meetse di ka bušetša >90% ya tack ka morago ga go hlwekiša.

Theipi ya PTFE ya themperetšha ye e nabilego e nyaka PSA ya silicone yeo e bolokago go kgomarela go tšwa go -70°C go ya go 260°C. Senotlolo moralo elements: primer-anchored phetoho lera (thibela delamination), leoatle-sehlekehlekeng microstructure (MQ resin lihlekehlekeng + polysiloxane tsoelang pele mohato), gradient crosslinking (phahameng-segokanyipalo ka hare lera bakeng sa creep ho hanyetsa, tlaase-segokanyipalo ka ntle lera bakeng sa tlaase-temp tack), le mocheso-tsitsitseng fillers (cerium oxide bakeng sa oxidation ho hanyetsa). Dikarolo tša siloxane tše di fetotšwego ka phenyl di gatelela go kristaloga ga themperetšha ya fase, go kgontšha go fetofetoga le maemo ka fase ga -100°C.

The sehiloeng qetellong sefahleho sebopeho sa PTFE phahameng-mocheso theipi ka ho toba ama sekgomaretsi oozing le bohale phahamisa nakong kopo. Go phatloga mo go fokolago (dithipa tše di lerootho, khutlo ye e sa swanelago) go hlola ditlhale tša sekgomaretši, go sesafatša legato la sekgomaretši sa mošito, gomme go pepentšha di-bur tša fiberglass – go lebiša go go tšhologa, go kgokagana mo go fokolago, le go phagamiša ka fase ga phišo goba kgatelelo. Difahlego tša mafelelo tše di sa swanego (maphoto, tše di tšwelelago) di hlola kabo ya kgatelelo ye e sa lekalekanego, go otlela go gagabela ga sekgomaretši nakong ya polokelo. Sefahlego sa mafelelo se se loketšego se boreledi, se a hlatswa, ebile ga se na tshenyo – se šoma bjalo ka tiišo yeo e notlelago sekgomaretši le go netefatša kgokagano ya mošito ka botlalo.

Nakong ya PTFE theipi tlotsa, solvent volatilization sekhahla sa silicone khatello-kutloisiso sekgomaretsi ke bohlokoa tshebetso paramethara. Ka lebelo kudu → go tloša letlalo la bokagodimo, go lekalekanywa mo go fokolago, mekoti ya diphini (solvent ye e swerego), le di-crater (condensation goba tše di hlotšwego ke tšhilafalo). Nanya haholo → sagging, metshetshe teteaneng, le dewetting ka tlaase-bokagodimo-matla PTFE. Leano loketseng: butle-butle qalong volatilization bakeng sa leveling le bubble baleha, joale potlakisa omisa bakeng sa bopa. Diriša disolvent tše di hlakantšwego (toluene/xylene + go oma ka lebelo) le themperetšha ya ontong ya gradient (tlase → magareng → ye e phagamego).

PTFE phahameng-mocheso theipi na babatsehang letsoai fafatsa ho hanyetsa, empa lintlha tse fokolang ke lera sekgomaretsi le fiberglass substrate metshetshe. Mekgwa ya go hlahloba: 1000h neutral salt spray (NSS) teko, go ela peel matla go boloka (≥80% hlokahala), diphoso pono (phahamisa, blistering), le tšepe substrate tšilafalo. Bakeng sa ditikologo tša lewatle le tša mouwane wa letswai le legolo: šomiša silicone PSA (e sego acrylic), substrate ya PTFE yeo e kolobeditšwego ka botlalo, tiiša metshetshe ka sealant yeo e sa kgonego go lwantšha boso, gomme o diriše primer godimo ga bokagodimo bja tšhipi.

Theipi ya themperetšha ya godimo ya PTFE e lahlegelwa ke go kgomarela ka morago ga tšhomišo ye e boeletšwago ka lebaka la tšhilafatšo ya godimo (lerole, oli ya silicone), go palelwa ga go kgomarela ga sekgomaretši (mašaledi), goba go kgomarela ga substrate mo go fokolago. Ditharollo: phahameng-crosslink silicone PSA (tlaase falla, leka-lekaneng tack / tšoara matla), primer kalafo ka PTFE substrate, teteaneng fiberglass tšehetso, le tšoara e nepahetseng (bokagodimo bo hloekileng, pholile ebola, 180 ° khutlo). Teko ya boleng e netefatša kaonafatšo.