Eli nqaku libandakanya ukusetyenziswa kwelaphu le-Teflon lobushushu obuphezulu (ilaphu le-fiberglass egqunywe nge-PTFE) kwindawo ye-aerospace. Imimandla ephambili yesicelo: Ukuveliswa kwezinto ezidibeneyo - i-cloth yokukhupha / ifilimu kwi-autoclave molding, iileyile zokuzihlukanisa, amabhanti okuhambisa amaqondo aphezulu okushisa kwimveliso ye-prepreg; Injini kunye nobushushu obuphezulu bokukhuselwa kwe-thermal - iingubo zokugquma i-thermal, i-firewall cladding, i-flexible high-temperature connections; Ukugquma kombane kunye nokukhuselwa kweentambo zocingo - ukuvala intambo kwiikhompathi ze-injini kunye neendawo zokumisa izixhobo; Ingaphakathi leenqwelo-moya kunye nokhuseleko lomlilo — iikhethini zomlilo/imiqobo yomsi ehlangabezana nemigangatho ye-FST, i-thermal/acoustic insulation blanket blanket; Izicelo ze-Space kunye ne-aerospace - ii-multi-layer insulation (MLI) iindibano, i-anti-cold-weld lubrication liners ye-solar panel deployment mechanisms kunye ne-antenna hinges, ilaphu lokulawula i-thermal.

Eli nqaku licacisa indlela i-PTFE yokwambathisa iibhondi kwilaphu le-fiberglass substrate kwilaphu leTeflon lobushushu obuphezulu. Ukudibanisa imichiza ngokuthe ngqo akunakwenzeka ngenxa ye-PTFE's ultra-low surface energy. Ukudibanisa kufezekiswa ngoku: Ukudibanisa komatshini (ukudibanisa ngokomzimba) - i-emulsion ye-PTFE ingena kwi-fiber gaps kwaye ibambe i-fiber bundles emva kokucoca; I-Silane coupling agent pretreatment - yenza ibhulorho yeemolekyuli phakathi kweefiber zeglasi ezingaphiliyo kunye ne-organic primer; I-Chemical primer transition layer - usebenzisa i-PAI, i-PPS, i-PES okanye i-PEEK i-resin ene-PTFE micropowder, isetyenziswe emva kokudibanisa unyango ukuze yenze i-robust transition layer; Ifilimu ye-adhesive ye-adhesive eshushu i-hot-melt i-lamination - iifilimu ze-FEP okanye ze-PFA (indawo yokunyibilika i-260-310 ° C) ibhondi yefilimu ye-PTFE eyenziwe ngaphambili kwilaphu; Ubume beGradient ngokusebenzisa ukufakwa okuphindaphindiweyo kunye nemijikelo ye-sintering - dilute ipasi yokuqala kunye ne-binder / i-agent edibanisayo ingena nzulu kwiifiber, ilandelwa yi-PTFE impregnations ecocekileyo, ukudala i-gradient yokwakheka ukusuka kwi-fiberglass ukuya kwi-PTFE ecocekileyo.

Eli nqaku lijongana nendlela uyilo lwesakhiwo se-microporous seTeflon ephefumlayo (PTFE) i-tape yobushushu obuphezulu ilinganisa ukufikeleleka komoya ngokugquma kunye neempawu ezingabambekiyo. Ungquzulwano olungundoqo: Ukungena komoya kufuna imingxunya evulekileyo, ngelixa ukugquma kufuna ukuxinana kunye nokungancamatheli kufuna umphezulu ogudileyo. Izicwangciso zoyilo olulungelelanisiweyo: lawula i-avareji ye-pore ye-diameter (0.1-2μm, ngokufanelekileyo <0.5μm) ukuthintela ukungena okunyibilikayo kunye nokugcina umbane wokuphuka; ukulawula i-porosity kwi-50-70% (≈60% ngokufanelekileyo) ukufezekisa i-Gurley 20-100s / 100cc kunye namandla e-dielectric ≥2kV yefilimu ye-0.13mm; yamkela ubume bepore womnatha ophezulu we-3D (τ≈2.5-4) ukucinezela imijelo yokukhupha ngokuthe ngqo; Yakha i-asymmetric gradient pore structure kunye ne-asymmetric surface skin layer (1-5μm) ye-non-stick / insulation kunye ne-porous yangaphakathi yokuphefumla; sebenzisa i-super-oleophobic/hydrophobic surface post-treatment ngaphandle kokuvaleka kwepore.

Eli nqaku libonisa izinto eziluncedo ze-PTFE ngelaphu lobushushu obuphezulu njengemidiya yokucoca ubushushu obuphezulu. Amandla amathandathu angundoqo: Ukumelana nokushisa okubalaseleyo (okuqhubekayo kwe-260 ° C, i-peak ~ 300 ° C), idlula i-PPS (190 ° C) kunye ne-aramid (200 ° C); Ukungangeni kweekhemikhali okugqithisileyo ngokuchasene ne-asidi, ii-alkali, izinyibilikisi kunye ne-oxidants, i-hydrolysis-resistant, i-aramid egqwesileyo kunye ne-P84 kwigesi ye-corrosive flue; Ukusebenza okugqwesileyo kokucoca uthuli ngamandla asezantsi asezantsi kakhulu okwenza kube lula ukususwa kwekeyiki yothuli kunye noxinzelelo oluphantsi oluzinzileyo; Ukusebenza kakuhle kokucoca kunye nobukhulu bepore 0.1-3μm ibamba ngaphezu kwe-99.99% ye-PM2.5 yamasuntswana; Ukungatsha kunye ne-LOI ngaphezu kwe-95%, kunye neendlela ezichasene ne-static ezikhoyo; Amandla omatshini aphezulu avela kwi-fiberglass yokuqinisa, kunye ne-PTFE fiber media ecocekileyo enikezela ukuguquguquka kunye> ubomi benkonzo yeminyaka emi-4. Ukuthelekisa ngokufanelekileyo ngokuchasene ne-PPS, i-aramid, i-Nomex, i-P84 kunye ne-fiberglass filter media kwiqondo lokushisa, ukuchasana kweekhemikhali, ukuxhathisa i-hydrolysis kunye nokusebenza kokucoca.

Eli nqaku libonelela ngezisombululo ezicwangcisiweyo zokuthintela intsalela encamathelayo kunye ne-adhesive bleed xa usebenzisa i-PTFE high-temperature tape ukukhusela iminwe yegolide ye-PCB ngexesha lendibano ye-SMT. Uhlalutyo lwesizathu esisisiseko: i-residue ivela ngenxa yokungaphumeleli kokubambisana okanye ukudluliselwa kwe-interfacial; ukopha kwenzeka ukusuka kwi-viscosity drop kunye ne-adhesive ephuphumayo phantsi kobushushu obuphinda buphinde buphume. Isisombululo esingundoqo kukukhethwa kwe-tape efanelekileyo: i-silicone ye-PSA ene-peak yexesha elifutshane ≥300 ° C, eqhubekayo ≥260 ° C, ubukhulu bubonke 0.08-0.13mm kunye neengqimba ezinamathele ezinamathele eziphezulu, kunye ne-anti-bleed / i-residu-free certification. Ulawulo lwenkqubo yamanyathelo amathandathu: ukucocwa kwangaphambili kwe-lamination kunye ne-IPA; I-zero-tension lamination kunye nokukhupha umoya ogcweleyo; iprofayile yeqondo lobushushu eliphuculweyo ngokufudumeza okuthambileyo (<2°C/s); ukuxobuka okubandayo ngaphantsi kwe-50 ° C kwi-angle ye-180 °; ukusetyenzwa kwangoko kwiiyure ezingama-24 kunye nokusetyenziswa kanye kuphela; ukusilela ukuphatha ngokusula IPA kunye nokuhlolwa 40-50x sikhulisi. KwiiPCB ezinamacala amabini, buyisela iteyiphu entsha phambi kokulungiswa kwecala lesibini.

Eli nqaku libonelela ngesikhokelo esicwangcisiweyo sokuthintela imibimbi kwilaphu le-PTFE lobushushu obuphezulu ngexesha lokutshisa. Imibimbi ibangelwa ngokusisiseko kukuncipha kobushushu obungalinganiyo kunye noxinzelelo olungaguqukiyo. Izisombululo zigubungela ukuhamba komsebenzi okupheleleyo: ulawulo lwe-substrate yezinto eziluhlaza (i-dewaxing epheleleyo / ukusetha ubushushu ukuphelisa uxinzelelo lwangaphakathi); ukufakwa kunye nokomisa (iingubo ezininzi ezinqabileyo, i-gradient yobushushu obuthambileyo, i-roller drive esebenzayo); ulawulo lwesithando somlilo (i-1-3% i-overfeed yesibonelelo sokunciphisa i-thermal, i-loop-loop micro-tension control evaliweyo, ukufana kobushushu obunqamlezileyo ngaphakathi kwe-± 5 ° C, i-gradient preheating-sintering-cooling curve, i-air-flotation furnaces njengesisombululo esona sisombululo, i-curved spreader rollers); ukupholisa kunye nokuseta (ukupholisa kancinci kancinci, gcina ukunwenwa kude kube ngaphantsi kwe-100°C, ukupholisa okupheleleyo phambi kokujija); esweni kwi-intanethi ngohlolo oluluqilima lokukhanya kunye nokuskena kwe-infrared.

Eli nqaku lihlalutya indlela i-sandblasting okanye i-matt yokugqiba unyango oluchaphazela ngayo isakhiwo esiphezulu se-PTFE yelaphu eliphezulu lobushushu. Utshintsho lwenzeka kumacala amathathu: I-Microscopic morphology iguquka ukusuka kwisipili esigudileyo ukuya kwi-rough gully texture kunye nokunyuka kabukhali kwexabiso le-Ra/Rz, idala i-3D ye-anchoring ye-3D izakhiwo zokudibanisa okulandelayo. Ingqibelelo yokwambathisa ijongene nemingcipheko: i-PTFE layer thinning, i-exposure ye-fiberglass substrate enokubakho (ebangela ilahleko yepropathi engeyiyo intonga, ukungena kokufuma, kunye nokunciphisa amandla omatshini), kunye ne-microcracks kunye nokuveliswa kwenkunkuma.

Eli nqaku lazisa inkqubo epheleleyo esisiseko yokufakela ilaphu le-fiberglass nge-PTFE emulsion. Amanyathelo asixhenxe angundoqo: ① Unyango lwangaphambili (ukukhutshwa kwewaxing/deizing) kuma-350-400°C ukususa ii-arhente zokulinganisa amalaphu; ② Ukwakhiwa kwe-emulsion kunye ne-40-55% umxholo oqinileyo kunye ne-surfactants yokuphucula ukumanzisa; ③ Ukukhulelwa ngendlela yediphu okanye iblade kagqirha; ④ Ukomisa kwi-100-150 ° C ukukhupha amanzi ngobunono kwaye wenze ifilimu ye-PTFE eyomileyo; ⑤ I-Sintering kwi-360-390 ° C (ukuya kwi-400 ° C) ukunyibilikisa amaqhekeza e-PTFE kwifilimu eqhubekayo; ⑥ I-Multi-cycle impregnation-drying-sintering ephindaphindiweyo ngamaxesha angama-2-4 ukufikelela kwithagethi yobukhulu kunye nomxholo we-resin (45-65%); ⑦ Unyango lwasemva konyango olubandakanya unyango lwe-corona, ukusikwa komphetho, ukujija kunye nokuhlolwa komgangatho. Amanqaku okulawula angundoqo: ukuchithwa ngokupheleleyo, ukumanzisa kwe-emulsion epheleleyo, ukomisa ngokuthe ngcembe, ubushushu obuchanekileyo bokutshisa, kunye nokuxinana kokutyabeka okungaguqukiyo. Iimveliso zikhonza i-laminates ye-copper-clad high-frequency, i-high-temperature conveyor belts kunye ne-architectural membrane materials.

Eli nqaku libandakanya izalathisi zentsebenzo eziphambili ze-PTFE tape yobushushu obuphezulu obusetyenziswa kwi-vacuum coating, unyango lwe-vacuum ubushushu kunye neendawo ezifanayo. Iimfuno eziphambili zihluke kakhulu kusetyenziso lwe-atmospheric: ukuphuma ngaphandle kubaluleke kakhulu (TML≤1%, CVCM≤0.1%; i-aerospace / amabakala okukhanya afuna i-TML≤0.5%, i-CVCM≤0.01%); ukumelana nobushushu kufuneka kuqinisekiswe kuzo zombini i-PTFE substrate (260 ° C) kunye ne-adhesive layer; I-silicone ye-PSA ehlanjululwe ngokukodwa ecocekileyo ephantsi-outgassing iyafuneka ukuthintela ukungcoliseka kwe-siloxane; ubushushu obuphezulu obubambe amandla bunqanda ukukhasa kunye nokuphakanyiswa komphetho; ucoceko alufuni ukuchithwa kwefayibha kunye nomxholo ophantsi we-ionic; i-anti-static tape (i-surface resistivity 10⁶-10⁹ Ω/sq) ikhusela umonakalo we-ESD; Ukuxhathisa kweplasma kufuneka kuhlolwe iinkqubo ze-sputtering / PECVD; i-thermal shrinkage engaphantsi kwe-2% iqinisekisa ukuchaneka kwe-mask.

Eli nqaku lazisa izinyibilikisi eziphilayo ezinokumelana nelaphu le-PTFE lobushushu obuphezulu. Ilaphu le-fiberglass egqunywe nge-PTFE libonisa ukunganyaniseki kweekhemikhali okungaqhelekanga, ukumelana phantse nazo zonke izinyibilikisi eziqhelekileyo eziphilayo phantsi kweemeko eziqhelekileyo zokusebenza ngaphandle kokutshatyalaliswa, ukudumba okanye ukusabela kweekhemikhali. Iindidi ezinyamezelekayo ziquka: i-alcohols (i-methanol, i-ethanol, i-isopropanol), i-ketones (i-acetone, i-MEK, i-cyclohexanone), i-esters (i-ethyl acetate, i-butyl acetate), i-hydrocarbons (ipetroli, i-toluene, i-xylene, i-hexane), i-halogenated hydrocarbons (i-dichloromethane, i-ether, i-carbon chlorodethylene, i-ether I-THF), i-organic acids (i-glacial acetic acid, i-formic acid), i-amines kunye ne-amides (i-triethylamine, i-DMF), i-phenols, kunye nezinye ezifana ne-carbon disulfide, i-pyridine, ioli ye-silicone kunye ne-brake fluid.