Sehlogo se se akaretša dikgopelo tša lešela la themperetšha ya godimo ya Teflon (lesela la fiberglass leo le tloditšwego ka PTFE) tšhemong ya sefofane. Senotlolo kopo libakeng: Composite thepa tlhahiso - lokolla lesela / filimi ka autoclave bōpa, ho itšehla thajana magato aa, phahameng-mocheso conveyor mabanta bakeng sa prepreg tlhahiso; Enjene le phahameng-mocheso mogote tšireletso - mogote kwahelang dikobo, firewall cladding, tenyetsehang phahameng-mocheso dikgokelo; Motlakase kwahelang le terata marapo tšireletso - thapo phuthela ka enjene compartments le landing Gear Bays; Dikagare tša difofane le tšhireletšo ya mollo - dikgaretene tša mollo/mapheko a muši a fihlelela maemo a FST, go apeša kobo ya go thibela phišo/ya modumo; Sebaka le dikopo aerospace - multi-lera kwahelang (MLI) dikopano,-ba khahlanong le batang-weld lubrication liners bakeng sa letsatsi phanele deployment mekgwa ya tshebetso le antenna hinges, mogote taolo lesela.

Sehlogo se se hlaloša ka moo go tlotša ga PTFE go kgokaganago le substrate ya lešela la fiberglass ka lešeleng la Teflon ya themperetšha ya godimo. Tlamo ya dikhemikhale ye e lebanyago ga e kgonege ka lebaka la maatla a bokagodimo bja PTFE bja fase kudu. Tlamo e fihlellwa ka: Mechanical interlocking ('mele tlamo) - PTFE emulsion penetrates faeba likhaba le grips faeba diphuthelwana ka mor'a sintering; Silane coupling moemeli pretreatment - e bopa limolek'hule borokho pakeng tsa inorganic khalase litlhale le manyolo primer; Dikhemikhale primer phetoho lera - sebelisa PAI, PPS, PES kapa PEEK resins le PTFE micropowder, sebediswa ka mor'a coupling kalafo ho bopa matla phetoho lera; Hot-qhibidiha sekgomaretsi filimi lamination - FEP kapa PFA lifilimi ( qhibiliha ntlha 260-310 ° C) tlamang pele ho thehoa PTFE lifilimi ho lesela; Gradient sebopeho ka multiple impregnation le sintering didikadikwe - dilute pele feta le binder / coupling moemeli penetrates tebileng ka litlhale, lateloa ke hloekileng PTFE impregnations, bōpa sebopeho gradient ho tloha fiberglass ho hloekileng PTFE.

Sehlogo se se lebane le ka moo tlhamo ya sebopego sa microporous sa theipi ya themperetšha ya godimo ya Teflon ye e hemago (PTFE) e lekalekanyago go tsenelela ga moya le dithoto tša go thibela go fiša le tšeo di sa kgomaretšego. Thulano ya motheo: go tsenelela ga moya go nyaka mašobana a bulegilego, mola go thibela go fiša go nyaka segokanyipalo le go se kgomarele go nyaka bokagodimo bjo bo boreledi. Maano a go hlama a lekalekanego: laola bophara bja karolelano bja pore (0.1-2μm, ka mo go swanetšego <0.5μm) go thibela go tsenelela ga melt le go boloka gagamalo ya go thubega; taolo porosity ka 50-70% (≈60% Optimum) finyella Gurley 20-100s / 100cc le dielectric matla ≥2kV bakeng sa 0.13mm filimi; amogela phahameng-tortuosity 3D marangrang pore sebopeho (τ≈2.5-4) ho hatella otlolohile-ka ho lokolloa metjha e; aga asymmetric gradient pore sebopeho le teteaneng holim letlalo lera (1-5μm) bakeng sa bao e seng khomarela / insulation le porous ka hare bakeng sa breathability; diriša super-oleophobic / hydrophobic bokagodimo ka morago ga kalafo ntle le pore thibelo.

Sehlogo se se fa ditharollo tše di rulagantšwego tša go thibela mašaledi a sekgomaretši le go tšwa madi a sekgomaretši ge o šomiša theipi ya themperetšha ya godimo ya PTFE go šireletša menwana ya gauta ya PCB nakong ya kopano ya SMT. Tshekatsheko ya sebaki sa modu: mašaledi a direga go tšwa go go palelwa ga kgokagano goba phetišetšo ya segokanyimmediamentsi sa sebolokigolo; go tšwa madi go direga go tšwa go go theoga ga viscosity le go tlala ga sekgomaretši ka fase ga phišo ya reflow. Tharollo ya motheo ke kgetho ya theipi ye e swanetšego: silicone PSA ka tlhora ya nako ye kopana ≥300°C, ye e tšwelago pele ≥260°C, botenya bja palomoka bja 0.08-0.13mm ka magato a sekgomaretši a godimo a kgokagano ye sesane, le netefatšo ya go se be le madi/mašaledi. Taolo ya tshepedišo ya megato ye tshela: go hlwekiša pele ga lamination ka IPA; lefela-kgateletšego lamination le go hudušwa ga moya ka botlalo; optimized reflow mocheso profil le bonolo futhumatsang (<2 ° C / s); go ebola ka go tonya ka fase ga 50°C ka khutlo ya 180°; tshepedišo ya ka pela mo diiri tše 24 le tšhomišo e tee fela; go palelwa go swara ka IPA phumola le 40-50x magnifier tlhahlobo. Bakeng sa di-PCB tša mahlakore a mabedi, tšeela sebaka ka theipi ye mpsha pele ga tshepedišo ya lehlakore la bobedi.

Sehlogo se se fa tlhahlo ye e rulagantšwego ya go thibela megokolodi godimo ga lešela la themperetšha ya godimo ya PTFE nakong ya go sintering. Di- wrinkle motheong di bakwa ke go fokotšega mo go sa leka-lekanego ga phišo le kgateletšego e sa dumelelanego. Ditharollo di akaretša tshepedišo ya mošomo ka botlalo: taolo ya substrate ya didirišwa tše tala (dewaxing ye e feletšego/peakanyo ya phišo go fediša kgateletšego ya ka gare); impregnation le omisa (coatings tse ngata tšesaane, bonolo mocheso gradient, mafolofolo drive rollers); sintering sebjana taolo (1-3% overfeed bakeng sa mogote shrinkage kabelo, koaletsoeng-loop micro-kgateletšego taolo, transverse mocheso uniformity ka hare ho ± 5 ° C, gradient preheating-sintering-pholile koba, moea-phaphametse libebe e le tharollo Optimum, kobehileng spreader rollers); go fodiša le go beakanya (go tonya ka go nanya ganyenyane-ganyenyane, boloka go phatlalala go fihla ka tlase ga 100°C, go fodiša ka botlalo pele o sotha); go baya leitlho inthaneteng ka tlhahlobo e matla leseli le skena sa infrared.

Sehlogo se se akaretša dinyakwa tša seelo sa go tonya nakong ya go sintering ga lešela la themperetšha ya godimo ya PTFE. Ka morago ga go sintering ka 380-400°C, lešela le swanetše go feta ka lebelo ka lefelong la 310-315°C leo le nago le kwelobohloko ya kristale. Sekgahla sa go fodiša se se kgothaletšwago ke bonyane 30-50°C/min (lešela le lesesane le ka fihlelela 100-200°C/min ka go fodiša moyeng). Go fodiša ka lebelo (go tima) go tšweletša crystallinity ya fase (45-50%), go tšweletša dilo tše boleta, tše thata tša go tlotša ka bokagodimo bjo bo boreledi, go kgomarela ka maatla, tshepedišo ye botse kudu ya go se kgomarele, le go ganetša delamination le go phatloga. Go fodiša ka go nanya (go tonya ga sebjana) go feletša ka kristale ya godimo (60-70%), go hlola dikhupetšo tše di thata, tše di brittle tšeo di sekametšego go fokotšega, go ebola le go phatloga ga microcracks.

Sehlogo se se bapetša go butšwa ga themperetšha ya phapoši le ya themperetšha ya godimo ya sekgomaretši seo se nago le kgatelelo ya silicone bakeng sa theipi ya PTFE. Go butšwa ga themperetšha ya godimo (120-180°C) go hlola dinetweke tše di kitimago tše di kgokagantšwego ka maatla a go kgokagana a maatla, go thibela mašaledi a sekgomaretši ka morago ga go ebola. E bopa ditlemo tša go tsenya dikhemikhale le disubstrate tša PTFE ka go fodiša mmogo ga primer, go fediša dikotsi tša delamination. Go butšwa ga themperetšha ya godimo gape go tloša dilo tše di fetogago tša dimolekule tša fase pele ga pelego, go thibela go bubble le tšhilafatšo ya oli ya silicone nakong ya go ruthetša la mathomo.

Tlhahlo ye e akaretša kgetho ya theipi ya themperetšha ya godimo ya PTFE bakeng sa go tloša sebopego sa go bopa ka ente le dikgopelo tša go lwantšha thupa. Kgetho ye e theilwego godimo ga themperetšha: ≤260 ° C bakeng sa dipolasetiki tša kakaretšo (theipi ya silicone PSA ya maemo, 0.13-0.18mm); 260-300 ° C bakeng sa dipolasetiki tša boentšeneare tša themperetšha ya godimo go swana le PC, PA66, POM (sekgomaretši sa silicone sa themperetšha ya godimo, 0.18-0.25mm); 300-400°C bakeng sa PEEK, LCP, PPS kgauswi le batamelane ba go fiša (theipi ya sekgomaretši e a palelwa; diriša lešela la PTFE leo le se nago sekgomaretši goba filimi ya PFA). Thepa-thehiloeng kgetho: tacky thepa hloka phahameng-tokollo hloekileng PTFE bokagodimo; khalase / diminerale tlala thepa hloka boima-mosebetsi 0.25mm + apara-mahanyetsa theipi; ditlaleletšo tše di bolago di nyaka sekgomaretši seo se sa kgonego go dikhemikhale le substrate ye e kitimago; dikopo static-kutloisiso hloka-ba khahlanong le static batsho PTFE theipi.

High-tensile PTFE phahameng-mocheso lesela e entsoe ka tlotsa PTFE holim'a phahameng-matla fiberglass lesela, fana ka tensile matla, mocheso ho hanyetsa, bao e seng khomaretse thepa, lik'hemik'hale ho hanyetsa, le tlaase kgohlano. Ditirišo tše bohlokwa di akaretša: go fetišetša intasteri (go phuthela ka go fokotša phišo, go baka dijo, diomiši tša lešela, go omiša pampiri/filimi); motswako bōpa lokolla lesela le chesang tobetsa cushion liners; welding dikgaretene tšireletso le mogote kwahelang baki; enjene motlakase le transformer kwahelang; go aga dibering tše di thelelago le dithekgo tša diphaephe; dikhemikhale filtration le belofo tiiso ka ditikoloho corrosive. Matla a godimo a go goga a netefatša go swarelela ka fase ga kgatelelo, go gagoga, go koba gape le gape, le kgatelelo ya motšhene ya themperetšha ya godimo go ralala le dikgopelo tše tša go fapafapana tša mošomo o boima.

Nakong ya sintering, dikarolwana tša PTFE godimo ga lešela la fiberglass di a qhibidiga ka godimo ga 327°C, di senya di-lamellae tša mathomo tša ketane ye e phuthilwego le mellwane ya dikarolwana go bopa go qhibidiga ga amorphous. Ge e fodile, PTFE e recrystallizes go ba spherulites yeo e bopilwego ka di-lamellae tše di lebanego le radially, ka crystallinity yeo e lego go 50-70%. Sekhahla sa go fodiša se laola phethego ya kristale: go fodiša ka go nanya go tšweletša kristale ye e phagamego, di- spherulite tše kgolo, go thatafala mo gogolo; go tima ka lebelo go fa spherulites ye botse le go fetofetoga mo go kaonafetšego.