Eli nqaku libandakanya imisebenzi ye-PTFE kwisigqubuthelo sokufakelwa kwe-thermal kwiinjini zomjukujelwa. Iindlela ezine: I-Endothermic decomposition — PTFE depolymerizes at ~400°C to tetrafluoroethylene (highly endothermic, ~3,000°C exposure yerhasi yokutsha), ukufunxa ubushushu obukhulu kunye nokukhupha amandla ashushu ukusuka eludongeni. Ukupholisa i-Transpiration kunye ne-gas film insulation - iigesi zokubola (i-tetrafluoroethylene) ziphuma ngaphandle ngokusebenzisa i-micro-pores, zisusa ukushisa komhlaba; ifilimu yegesi equkuqelayo ihlukanisa igesi yokutsha yobushushu obuphezulu eludongeni, inciphisa ubushushu obusondeleyo eludongeni nge>50%; ifilimu yegesi iguqula umda wesantya / ubushushu, ukunciphisa ukhukuliseko lwamasuntswana.

Eli nqaku libandakanya ukusetyenziswa kwelaphu le-Teflon lobushushu obuphezulu (ilaphu le-fiberglass efakwe kwi-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 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.

Lo mfutshane wobugcisa ovela kuJiangsu Aokai uhlalutya indlela amaqondo obushushu aphantsi okanye aphezulu alonakalisa ngayo i-PTFE yobushushu obuphezulu. I-sintering ephantsi ishiya amasuntswana anganyibilikiyo, okwenza i-micro-pores, i-coating-substrate bonding ebuthathaka, iindawo ezirhabaxa, amandla omatshini angasebenziyo, kunye nenkangeleko emhlophe yobisi. Ubushushu obugqithisileyo bubangela ukuthotywa kwe-PTFE thermal, kuvelisa imingxunya, amaqamza, brittleness, yellow-to-black discoloration, kunye nokukhupha imisi eyityhefu. Zombini ezi zinto zigqithileyo zitshabalalisa ukubumbana, ukusebenza okungabambekiyo, ukuguquguquka, ukugquma, kunye nokuzinza komda.

Ikhalenda – ucinezela ilaphu eligqunywe nge-PTFE phakathi kweerola zesipili ezishushu kwi-360-380°C – kuguqula ngokumangalisayo ukumila komphezulu, iipropathi zokukhulula, ukungagungqi, kunye nokusebenza koomatshini. Iyanciphisa uburhabaxa ukusuka ku-Ra 0.5-1.0 μm ukuya ku-<0.05 μm, itywina i-pinholes, iphucula ukuchasana nokugqoka, kodwa iyancipha amandla okukrazula kunye nokuguquguquka. Kubalulekile ukukhulula iilitha kunye nokufakelwa kombane.

Njengomvelisi oqeqeshiweyo wamalaphu obushushu obuphezulu be-PTFE, i-Jiangsu Aokai New Materials ikunika ulwazi lobungcali. Eyona njongo yonyango lomphezulu we-fiberglass kukwakha ibhulorho yemolekyuli phakathi kwe-inorganic fiberglass kunye ne-PTFE yendalo, ukuze basombulule ngokusisiseko inc yabo.