Iteyiphu ye-PTFE yobushushu obuphezulu isebenza njengesixhobo esibalulekileyo kwimveliso ye-semiconductor, hayi injongo esetyenziswayo ngokubanzi. Izicelo eziphambili: ukukhuselwa kwenqanaba le-wafer (i-plasma etching masking, i-CMP yokukhusela ngasemva, i-CVD / PVD masking), iinkqubo zokupakisha (ukulungiswa kwe-wire bonding, imaski ye-soldering ye-PCBs), kunye nokugcinwa kwezixhobo (i-anti-static roller wrapping, ukuphawula indawo yokucoca). Iimfuno ze-Ultra-clean: i-halogens ephantsi (ikhusela i-bond pad corrosion), i-siloxanes ephantsi (<500 ppm, inqanda ukubunjwa kwe-particle ye-insulating), i-ion yensimbi ephantsi (<1 ppm nganye), i-ISO Class 4 yokucoceka kwe-slitting / ukupakisha, i-10⁶ -10⁹ Ω ukukhutshwa kwendawo ye-TV ephantsi.

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.

Iteyiphu yobushushu obuphezulu be-PTFE yonyango idibanisa i-biocompatible substrate ye-PTFE kunye ne-adhesive ye-silicone ephiliswe ngeplatinam. Iimpawu eziphambili: I-ISO 10993 ehambelanayo (ayikho i-cytotoxicity, i-sensitization, okanye irritation), imelana ne-sterilization ephindaphindiweyo (i-steam / EO / gamma), i-260 ° C yokumelana nokushisa. Amanyathelo okhuseleko abalulekileyo: ungadluli kwi-260 ° C (umsi oyityhefu ongaphezu kwe-300 ° C), i-gamma irradiation inokubangela u-embrittlement, uqinisekise iindlela zokuvala inzala, kwaye ucele amaxwebhu okuthobela ngokupheleleyo (iingxelo ze-ISO 10993, i-MSDS, idatha yokuguga). Ayilogazi elithe ngqo okanye ukusetyenziswa kofakelo ngaphandle kokuba kuqinisekiswe ngokuthe ngqo.

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.

PTFE tape reusability ixhomekeke kwizinto ezine: ukwakhiwa kwencamathelisa (high crosslink density, low abicah migration, microphase structure for repositionable tack), substrate anchoring (ukusebenza komphezulu + primer ukuthintela ugqithiso oluncamathelayo olupheleleyo), umva wokwaleka (ukukhulula umaleko ukukhusela incatho ngexesha lokukhulula), kunye nokuphatha ngokufanelekileyo (i-adhesive ecocekileyo yokuncamathela, ukunqanda i-adhesive echanekileyo, i-adhesive echanekileyo). Izinto ezincamathelayo ezihlanjwayo ezihlanjwa ngamanzi zinokuphinda zifumane i>90% tack emva kokucoca.

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-Fiberglass ukucutheka kwe-thermal ngoyena nobangela wokungazinzi kwetape ye-PTFE. Kubushushu be-PTFE sintering (360-400 ° C), uxinzelelo lokulukwa olushiyekileyo luyakhululwa. Ukuba ayinqandwa, ilaphu liyancipha; ukuba unqandekile, uxinzelelo olufihliweyo luvalelwe, lubangela ukuncipha kamva ngexesha lokunyathela (150-200 ° C) kunye nokushisa kokuphela kokusetyenziswa. Isisombululo: sebenzisa i-fiberglass esele ifakwe ngaphambili kunye ne-<0.5% shrinkage kwi-400 ° C, ukuphelisa uxinzelelo olushiyekileyo ngaphambi kokugubungela.