Ilaphu le-PTFE elinobushushu obuphezulu liveliswa nge-single-dip impregnation (ipasi enye: ngokukhawuleza, ngexabiso eliphantsi, isambatho esibhityileyo, indawo erhabaxa enemibhobho) okanye i-multi-dip impregnation (i-2-3+ idlula: i-coating egudileyo, eshinyeneyo, i-pinhole-free, umxholo we-PTFE 50-70%, ukusebenza kweprimiyamu, ixabiso eliphezulu). Idiphu enye ifanela iigaskets zomgangatho ophantsi, iimethi zexeshana, kunye nezinto eziphefumlayo. I-Multi-dip iyafuneka kumaphepha okubhaka ebakala lokutya, amabhanti okuhambisa angeyontonga, i-high-frequency circuit substrates, ii-chemical liners, kunye ne-architectural membranes.

I-PTFE yobushushu obuphezulu bonyango lomphezulu welaphu lophula ukunganyaniseki kweekhemikhali kwibhondi/yokushicilela. Iindlela ezine: i-chemical etching (i-sodium-naphthalene, amandla angaphezulu kwe-20→ 40-50 dyn / cm, isigxina esimnyama esisisigxina, isakhiwo se-micro-porous), unyango lwe-plasma (i-nano-roughening, i-grafting yeqela elisebenzayo, ifestile emfutshane esebenzayo), unyango lwe-corona (ifilimu encinci, ukubola okukhawulezayo, ubunzulu obuncinci), kunye nonyango lwe-laser (i-precision micro-patterning, i-controlled carbonization). Zonke iindlela zokwenziwa zirhabaxa ngokwasemzimbeni kwaye zazisa ngokwamaqela amaqela amhlophe ngokwekhemikhali (C=O, -OH, -COOH) ukwenza ukuba kudityaniswe izinto ezincamathelayo.

Ukucoceka kwempahla ekrwada sisiseko se-PTFE somgangatho ophezulu welaphu lobushushu. Ukungcola (iziqalisi ezishiyekileyo, ii-athon zentsimbi, ii-ayinti zentsimbi, ii-agent zokulinganisa ezosulelekileyo) zibangela ukuwohloka kobushushu kwangaphambi kwexesha (amaqamza, amadyungudyungu angaphezu kwama-260°C), imiphezulu engalinganiyo intonga (iendawo zokuncamathela), ukunciphisa ukugqunywa kombane (ilahleko ye-dielectric, ukuqhawuka kombane osezantsi), ukuwohloka kombane ophantsi), ukuwohloka kwamandla omatshini (uxinzelelo olutyheli/ukuqhekeka kombala), ukomelela komatshini kunye noxinzelelo olutyheli. Izinto eziluhlaza ezicocekileyo ziqinisekisa i-FDA-ethobelayo, ubomi obude, i-PTFE yelaphu eliphezulu.

I-PTFE-coated fiberglass sintering yelaphu ifuna ixesha elichanekileyo lokubamba kwi-370-400 °C. Iifurnas eziqhubekayo: 30-90s (encinci) ukuya kwi-3-5 + min (ebanzi). Izithando zeBatch: 5-15 min. I-under-sintering ibangela i-opaque, iingubo ezinqabileyo eziqhekezayo; i-sintering kakhulu ibangela ukuba tyheli, ukubhitya, kunye nokukhutshwa kwerhasi eyityhefu yefluoride. Ukulungiswa kwenkqubo: sebenzisa i-trackers zeqondo lokushisa, yenza uhlolo olubonakalayo (i-semi-transparent, flexible), kwaye wenze iimvavanyo zokutsala iteyiphu. Ngalo lonke ixesha qinisekisa ukutyeba okupheleleyo kobushushu obufanayo.

Ilaphu le-PTFE lobushushu obuphezulu lifuna ukuphathwa ngononophelo ukuqinisekisa ukhuseleko kunye nobomi obude. Amanyathelo okhuseleko angundoqo: ungaze udlule kwi-260 ° C (ngaphezulu kwe-320 ° C ikhupha umsi oyityhefu), thintela ukukrazuka okubukhali (iintanda zokugquma, ziveze i-fiberglass), akukho ukucocwa kwe-abrasive (uboya bentsimbi yonakalisa umphezulu ongengontonga), gcina imvume yokwandiswa kwe-thermal (ithintela ukukrazuka), kwaye ubeke endaweni yayo xa idutyulwe okanye ixotyulwe. Ivenkile iqengqiwe, kude neUV. Nxiba iiglavu ezikhusela ukushisa ngexesha lokuphatha.

Ilaphu le-PTFE lobushushu obuphezulu linomlinganiso wokwandiswa kwe-thermal (CTE) ye-30-60 ppm / ° C (i-warp / weft) - iphezulu kune-fiberglass yodwa kodwa iphantsi kakhulu kune-PTFE ecocekileyo (100-200 ppm / ° C). I-PTFE idlula ngokukhawuleza utshintsho lwevolumu (1-2%) kwi-19 ° C kunye ne-30 ° C yenguqu yesigaba. Ukunqanda ukubambana, ukukrazula, kunye nokudilizwa: ukucinywa koyilo lolwandiso lwasimahla, kunqande ukuxinezeleka ngamaqondo obushushu besigaba, sebenzisa izithinteli ezizenzekelayo kumabhanti okuhambisa, kwaye sebenzisa uyilo oluchasene ne-buckling overlap. Ukuhlolwa rhoqo ukuhamba okubandayo kubalulekile.

I-PTFE i-high-temperature yokushisa ilaphu yokubhaka i-mats inika iingenelo ezine eziphambili: ukusebenza okungeyona intonga (akukho mafutha okanye umgubo ofunekayo, i-pastries e-ethe-ethe ikhupha ngokucocekileyo), uluhlu olubanzi lobushushu (-70 ° C ukuya kwi-260 ° C, ikhuselekile kwi-oven ukuya kwisikhenkcisi), ukusetyenziswa kwakhona (amawaka emijikelo, kulula ukuyicoca), kunye nokuqhuba ubushushu (ukuthintela ukutshisa, ukulungelelaniswa okumdaka). I-FDA yomgangatho wokutya iyahambelana, bakhupha iphepha lesikhumba kwaye bagqithise iimethi ze-silicone ngokugqithisela ubushushu obungcono kunye nokucoleka komphezulu.

Ilaphu le-PTFE lobushushu obuphezulu libalulekile kwishishini lempahla edibanisayo. Usetyenziso oluphambili: amabhanti okuhambisa angenamthungo angenasiphelo koomatshini bokudibanisa abaqhubekayo (bathintela ukuncamathelisa okutshisayo okunyibilikayo, ukuhambisa okungenamibimbi), isigqubuthelo esinganamatheli kunye nelaphu lokugquma lobushushu obucaba (ukhusela iipleyiti kungcoliseko oluncamathelayo), amabhanti okuhambisa amachaphaza okuncamathisela/umgubo wokuncamathisela ngexesha lokuncamathisela. ukomisa / ukuthambisa), kunye nezihlangu zezihlangu zentsimbi zokucofa isampulu. Ukutyeba ukusuka kwi-0.13mm (i-padding elula) ukuya kwi-0.55mm (iibhanti zokuhambisa ezinzima).

Ilaphu le-PTFE elichasene ne-static liphunyezwa ngeendlela ezimbini eziphambili: ukugquma idoping (ukuxuba izihluzi eziqhubayo ezifana nekhabhoni emnyama kwi-emulsion ye-PTFE, ukwenza inethiwekhi ye-percolation ekugxininiseni okubalulekileyo) kunye ne-substrate weaving (ukufaka iintsinga eziqhubayo kwilaphu le-fiberglass). Ukumelana nomphezulu kulawulwa ku-10⁵–10⁹ Ω. Umgaqo-siseko: yenza indlela yokuqhuba ekhupha iintlawulo ezimileyo ngoko nangoko, ukuthintela ukuqokeleleka okuyingozi. Ukuthoba kunyanzelekile ukuze usebenze ngokufanelekileyo.

Ilaphu le-PTFE elinobushushu obuphezulu (i-PTFE-coated fiberglass) inikeza uxhathiso lweekhemikhali ezikhethekileyo, ukumelana ne-acids concentrated (kuquka i-aqua regia), i-alkali eyomeleleyo (kwiqondo lobushushu begumbi), izinyibilikisi eziphilayo, kunye ne-oxidizing agents. Ngaphandle: isinyithi esinyibilikisiweyo sealkali kunye nobushushu obuphezulu bekhompawundi yehalogen ihlasela i-PTFE. Umonakalo wokugquma ubeka i-fiberglass kwi-hydrofluoric acid kunye ne-alkali egxininiswe eshushu. Ubushushu obungaphezulu kwe-260 ° C bunciphisa ukuxhathisa. Kwiindawo ezininzi zeekhemikhali, ilaphu le-PTFE lihlala lizinzile kwaye lithembekile.