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 tšesaane, ho senyeha ka potlako, botebo bo fokolang), le phekolo ea laser (ho nepahala micro-patterning, controlled 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 fokotsa motlakase (tahlehelo ea dielectric, ho fokotseha ha matla), ho fokolisa matla a mochine, ho fokolisa 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 mokhoa o senyang (boea ba tšepe bo senya bokaholimo bo se nang thupa), 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 moralo bakeng sa katoloso ea mahala, qoba tsitsipano ka har'a lithempereichara tsa phetoho, sebelisa li-tensioner tse ikemetseng mabanta a conveyor, 'me u sebelise moralo oa anti-buckling overlap. Ho hlahlojoa khafetsa bakeng sa ho phalla ha serame ke habohlokoa.

Masela a ho baka a mocheso a phahameng a PTFE a fana ka melemo e mene ea bohlokoa: ts'ebetso e sa tsitsang (ha ho na oli kapa phofo e hlokahalang, li-pastry tse bonolo li lokolloa ka mokhoa o hloekileng), mefuta e mengata ea mocheso (-70 ° C ho ea ho 260 ° C, e 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.

PTFE lesela la mocheso o phahameng oa mocheso le bohlokoa ho indasteri ea ho kopanya liaparo. Lisebelisoa tsa bohlokoa: mabanta a sa feleng a conveyor bakeng sa mechini e tsoelang pele ea ho kopanya (e thibela sekhomaretsi se chesang se qhibilihisang, se se nang wrinkles), sekoaelo se se nang thupa le lesela la padding bakeng sa likhatiso tsa mocheso o bataletseng (li sireletsa lipoleiti hore li se ke tsa silafatsoa), mabanta a conveyor bakeng sa pente ea matheba / phofshoana e koahelang li-powder. 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).

Lesela la anti-static PTFE le fihleloa ka mekhoa e 'meli e meholo: ho roala doping (ho kopanya li-fillers tse tsamaisang tse kang carbon black ho PTFE emulsion, 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 e tsamaisang litefello tse sa fetoheng 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 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.