Theipi ea mocheso o phahameng oa PTFE e sebetsa e le thepa ea bohlokoa tlhahisong ea semiconductor, eseng ntho e ka sebelisoang ka kakaretso. Lisebelisoa tsa bohlokoa: ts'ireletso ea boemo ba li-wafer (masking ea plasma etching, ts'ireletso ea mokokotlo oa CMP, masking ea CVD / PVD), mekhoa ea ho paka (ho lokisa terata, maske a solder bakeng sa li-PCB), le tlhokomelo ea lisebelisoa (anti-static roller wrapping, ho tšoaea kamore e hloekileng). Litlhoko tse hloekileng ka ho fetisisa: li-halogens tse tlaase (li thibela ho bola ha li-bond), li-siloxane tse tlaase (<500 ppm, li thibela ho thehoa ha likaroloana tse sireletsang), li-ion tse tlaase tsa tšepe (<1 ppm ka 'ngoe), ISO Class 4 cleanroom slitting/packaging, 10⁶-10⁹ Ω TV surface resistivity.

Ho hloeka ha lintho tse tala ke motheo oa motheo oa boleng ba lesela la mocheso o phahameng oa PTFE. Litšila (masala a qalang, li-surfactants, li-ion tsa tšepe, li-agent tse silafetseng) li baka ho senyeha ha mocheso pele ho nako (lipulunyana, ho phatloha ka holimo ho 260 ° C), libaka tse sa tsitsang tse sa tsitsang (lintlha tse khomarelang), ho fokotsoa ha motlakase (tahlehelo ea dielectric, matla a tlase a ho senyeha), ho fokolisa matla a mochine (stress coloring), ho fokotseha ha matla a mochine (stress coloring), Lisebelisoa tse tala tse phahameng li netefatsa hore lesela la PTFE le lumellana le FDA, le phela nako e telele, le sebetsa hantle haholo.

Ho roala lesela la fiberglass e koahetsoeng ke PTFE ho hloka nako e nepahetseng ea ho tšoara 370-400°C. Libōpi tse tsoelang pele: 30-90s (e tšesaane) ho 3-5 + min (e teteaneng). Libōpi tsa lihlopha: 5-15 min. Tlas'a sintering etsa hore opaque, le mahoasheng lira hore ebola; ho tebela ho feta tekano ho baka bosehla, ho brittleness le ho tsoa ha khase e chefo ea fluoride. Ts'ebetso ea ts'ebetso: sebelisa li-trackers tsa mocheso oa sebōpi, etsa tlhahlobo ea pono (e hlakileng, e bonolo), 'me u etse liteko tsa ho hula tepi. Kamehla etsa bonnete ba ho lumellana ha mocheso o feletseng.

Theipi ea boemo ba bongaka ea PTFE e nang le mocheso o phahameng o kopanya biocompatible PTFE substrate le sekhomaretsi sa silicone se phekotsoeng ka platinum. Lintlha tsa bohlokoa: ISO 10993 e lumellana (ha e na cytotoxicity, sensitization, kapa ho teneha), e mamella sterilization e pheta-phetoang (mouoane / EO / gamma), ho hanyetsa mocheso oa 260 ° C. Mehato ea bohlokoa ea ho itšireletsa: e se ke ea feta 260 ° C (mosi o chefo o ka holimo ho 300 ° C), mahlaseli a gamma a ka 'na a etsa hore a fokotsehe, a netefatse mekhoa ea ho thibela likokoana-hloko,' me a kope litokomane tsa ho lumellana ka botlalo (litlaleho tsa ISO 10993, MSDS, lintlha tsa botsofali). Eseng bakeng sa tšebeliso ea mali e tobileng kapa e kentsoeng ntle le haeba e netefalitsoe ka ho toba.

Lesela la mocheso o phahameng oa PTFE le hloka ho tšoaroa ka hloko ho netefatsa polokeho le bophelo bo bolelele. Litlhokomelo tsa bohlokoa: le ka mohla u se ke ua feta 260 ° C (ka holimo ho 320 ° C e ntša mosi o chefo), qoba likheo tse bohale (ho roala mapetsong, ho pepesa fiberglass), ho se hloekisoe ka mahlahahlaha (boea ba tšepe bo senya bokaholimo bo sa thunngoeng), boloka sebaka sa ho atolosa mocheso (ho thibela ho taboha), 'me u nke sebaka ha se entsoe kapa se eboloa. Lebenkele le phuthiloe, hole le UV. Apara liatlana tse thibelang mocheso nakong ea ho tšoara.

PTFE lesela la mocheso o phahameng oa mocheso le na le coefficient ea ho atolosa mocheso (CTE) ea 30-60 ppm/°C (warp/weft) - e phahameng ho feta fiberglass feela empa e le tlase haholo ho feta PTFE e hloekileng (100-200 ppm/°C). PTFE e etsa liphetoho tse potlakileng tsa molumo (1-2%) ho 19°C le 30°C phato ea liphetoho. Ho qoba ho phunya, ho taboha le ho qhekella: tumello ea meralo bakeng sa katoloso ea mahala, qoba ho tsitsipana ka har'a lithempereichara tsa phetoho, sebelisa li-tensioner tsa othomathiki mabanta a conveyor, 'me u sebelise moralo oa anti-buckling overlap. Ho hlahlojoa khafetsa bakeng sa ho phalla ha serame ke habohlokoa.

PTFE theipi reusability e itšetlehile ka lintlha tse 'nè: sebopeho sa sekhomaretsi (high crosslink density, low silicone migration, microphase structure for repositionable tack), substrate anchoring (surface activation + primer ho thibela phetisetso e feletseng ea sekhomaretsi), ho roala ka morao (ho lokolla lesela ho sireletsa sekhomaretsi nakong ea ho phutholoha), le ho tšoara ka nepo (sekhomaretsi se hloekileng, ho qoba sekhomaretsi se nepahetseng). Likhomaretsi tse fetotsoeng tse hlatsuoang ka metsi li ka hlaphoheloa> 90% tack kamora ho hloekisoa.

PTFE lesela la mocheso o phahameng oa mocheso oa ho baka limmete li fana ka melemo e mene ea bohlokoa: ts'ebetso e se nang thupa (ha ho na oli kapa phofo e hlokahalang, li-pastry tse bonolo li lokolloa ka mokhoa o hloekileng), mocheso o pharaletseng (-70 ° C ho ea ho 260 ° C, o bolokehile bakeng sa ontong ho ea sehatsetsing), ho sebelisoa hape (li-cycles tse likete, ho bonolo ho hloekisa), esita le conduction ea mocheso (e thibela ho chesa, ho leka-lekana ho sootho). E tsamaellana le FDA ea boemo ba lijo, e ntša pampiri e entsoeng ka letlalo 'me e feta limmete tsa silicone tse nang le mocheso o betere le sebopeho se setle sa bokaholimo.

Lesela la mocheso o phahameng oa PTFE le bohlokoa indastering ea ho kopanya liaparo. Lisebelisoa tsa bohlokoa: mabanta a sa feleng a conveyor bakeng sa mechini e tsoelang pele e kopanyang (e thibela sekhomaretsi se chesang se qhibilihisang, se se nang wrinkles), sekoaelo se se nang thupa le lesela la ho roala likhatiso tsa mocheso o bataletseng (sireletsa lipolanete ho silafatsoa sekhomaretsi), mabanta a conveyor bakeng sa pente ea matheba / phofshoana e koaheletsoeng ka matheba. ho omisa / ho sintering), le likoahelo tsa lieta tsa tšepe bakeng sa ho hatella sampole. Botenya bo tloha ho 0.13mm (padding e bobebe) ho isa ho 0.55mm (mabanta a tsamaisang mosebetsi o boima).

Fiberglass lesela thermal shrinkage ke sesosa se ka sehloohong sa PTFE tepi dimensional ho se tsitse. Ho PTFE sintering thempereichara (360-400 ° C), masala a loha khatello ea kelello e lokolloa. Haeba e sa thibeloe, lesela lea fokotseha; haeba e thibetsoe, khatello ea kelello e patehileng e koaletsoe, e bakang ho fokotseha ha morao nakong ea ho phekola ka sekhomaretsi (150-200 ° C) le ho futhumatsa ho qetela. Tharollo: sebelisa fiberglass e behiloeng pele ho mocheso e nang le <0.5% shrinkage ho 400 ° C, ho felisa khatello ea kelello e setseng pele u roala.