Lesela la mocheso o phahameng oa PTFE le hlahisoa ka ho kenngoa ha lesela le le leng (phase e le 'ngoe: ho potlaka, ho theko e tlaase, ho roala hamonate, holim'a metsi a nang le likoti) kapa ho kenngoa ha metsi a mangata (2-3+ e feta: e boreleli, e teteaneng, e se nang pinhole, PTFE content 50-70%, premium performance, theko e phahameng). Single-dip e lumellana le li-gaskets tsa boemo bo tlase, limmete tsa nakoana, le lisebelisoa tse phefumolohang. Li-multi-dip li hlokahala bakeng sa maqephe a ho baka a boemo ba lijo, mabanta a conveyor a sa thupeng, li-circuits tsa maqhubu a phahameng, li-liner tsa lik'hemik'hale, le li-membrane tsa meralo.

Phekolo ea lesela la mocheso o phahameng oa PTFE e senya ho se sebetse ha lik'hemik'hale bakeng sa bonding/printing. Mekhoa e mene: etching ea lik'hemik'hale (sodium-naphthalene, matla a holim'a 20→ 40-50 dyn / cm, lera le lefifi le sa feleng, sebopeho sa micro-porous), phekolo ea plasma (nano-roughening, grafting ea sehlopha se sebetsang, fensetere e khutšoanyane e sebetsang), phekolo ea corona (filimi e nyenyane, ho senyeha ka potlako, botebo bo fokolang), le phekolo ea laser (ho nepahala ha micro-patterning, ho laoloa ke carbonization). Mekhoa eohle ea 'mele e hlabang le ho hlahisa lihlopha tsa polar ka lik'hemik'hale (C=O, -OH, -COOH) ho etsa hore ho khonehe ho kopanya.

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.

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 hlahloba khafetsa ho phalla ha serame ho bohlokoa.

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).

Anti-static PTFE lesela le fihlellwa ka mekhoa e 'meli e meholo: ho roala doping (ho kopanya li-fillers tse tsamaisang tse kang carbon black ho emulsion ea PTFE, ho etsa marang-rang a percolation nakong ea mahloriso a bohlokoa) le substrate weaving (ho kenya likhoele tsa conductive ka har'a lesela la fiberglass). Ho hanyetsa ha sefahleho ho laoloa ho 10⁵–10⁹ Ω. Molao-motheo: theha tsela ea conductive e ntšang litefello tse tsitsitseng hang-hang, ho thibela ho bokellana ho kotsi. Ho beha fatše hoa hlokahala bakeng sa ts'ebetso e sebetsang.

Lesela la PTFE le nang le mocheso o phahameng oa mocheso (PTFE-coated fiberglass) le fana ka khanyetso e ikhethang ea lik'hemik'hale, e mamellang concentrated acids (ho kenyeletsoa le aqua regia), li-alkali tse matla (mocheso oa kamore), li-solvents le li-oxidizing agents. Mekhelo: tšepe ea alkali e qhibilihisitsoeng le metsoako ea halogen ea mocheso o phahameng e hlasela PTFE. Tšenyo ea ho roala e pepesetsa fiberglass ho hydrofluoric acid le alkalis e chesang haholo. Mocheso o ka holimo ho 260 ° C o fokotsa ho hanyetsa. Bakeng sa libaka tse ngata tsa lik'hemik'hale, lesela la PTFE le lula le tsitsitse ebile le tšepahala.