Boima ba lesela la fiberglass bo lekanya hore PTFE e sebetsa ka mocheso o phahameng oa mocheso. Boima bo phahameng bo eketsa matla a tsitsipano le boreleli bo holim'a metsi empa bo fokotsa matla a ho taboha (inverted U-curve), ho tenyetseha, le ho kenella ka hare. Tekano e nepahetseng e leka-lekanya ho kenella, ho hanyetsa meokho, ho tenyetseha le ho fella ka holimo. Boima bo tlase bo lumellana le ho kobeha ho matla; boima bo boholo bakeng sa ho se thunye le ho kenya letsoho.

Calendering - ho hatella lesela le koahetsoeng ke PTFE pakeng tsa lirolara tsa seipone tse futhumetseng ka 360-380 ° C - ho fetola ka mokhoa o makatsang sebopeho sa bokaholimo, thepa ea ho lokolla, ho se khonehe, le ts'ebetso ea mochini. E fokotsa boima ho tloha ho Ra 0.5-1.0 μm ho <0.05 μm, e tiisa li-pinholes, e ntlafatsa ho hanyetsa ho apara, empa e fokotsa matla a ho taboha le ho feto-fetoha ha maemo. E bohlokoa bakeng sa ho lokolla li-liner le ho kenya motlakase.

PTFE lesela la mocheso o phahameng oa mocheso le lesela la silicone ka bobeli li sebelisa lesela la fiberglass e le motheo empa li fapane ka thepa ea ho roala (PTFE resin vs silicone rabara). PTFE e ipabola tabeng ea ho se thunye, ho se mamelle, le ho hanyetsa lik'hemik'hale ho fihla ho 260°C. Lesela la silicone le fana ka mokhoa o phahameng oa ho tenyetseha, ho kenya motlakase, le ho hanyetsa mollo (ho fihlela ho 230 ° C). Khetha ho latela lintho tse tlang pele bophelong ba hau.

PTFE lesela la mocheso o phahameng oa mocheso (PTFE membrane material) ke khetho ea pele bakeng sa meralo e tsitsitseng. Melemo ea bohlokoa: lilemo tse 30+ tsa bophelo ba kantle, sebaka sa ho itlhoekisa (metsi a pula a hlatsoa litšila), phetiso ea mabone a bonolo (6-13%), boemo ba mollo oa Sehlopha sa A, le matla a kang tšepe a ka tlase ho 1.5 kg/m². E sebelisoa mabaleng a lipapali, boema-fofane le meaho e ikhethang lefatšeng ka bophara.

Lesela la PTFE la mocheso o phahameng le fana ka khanyetso e ikhethang ea lik'hemik'hale, le mamella li-acid tse matla, alkalis, solvents organic, le likhase tse senyang. Sengoliloeng sena se qaqisa lintho tsa sona tse hanyetsanang, mefokolo (metaele ea alkali e qhibilihisitsoeng, lisebelisoa tse matla tsa fluorinating), le lintlha tsa bohlokoa joalo ka mocheso, khatello ea maikutlo le khatello ea maikutlo.

PTFE impregnation ha e felle feela ho fiberglass lesela. Sengoliloeng sena se hlahisa li-substrates tse 7 tse ling - aramid, carbon fiber, PBI, porous metal, graphite, asbestos (phased out), le li-filler tsa ceramic - ka likarolo tsa bona tsa ts'ebetso, melemo, mefokolo, le lits'ebetso tsa bohlokoa.

Sengoliloeng sena se hlalosa hore na ke hobane'ng ha lesela la fiberglass e se nang alkali e le eona substrate e ratoang bakeng sa lesela la mocheso o phahameng oa PTFE. E akaretsa maqhama a lik'hemik'hale ka li-silane coupling agents le thepa ea bohlokoa ea 'mele joalo ka botsitso ba mocheso, botsitso ba sebopeho, le ho hanyetsa kutu - ho netefatsa ts'ebetso e tšoarellang halelele libakeng tse thata.