Litheipi tsa PTFE tse nang le mocheso o phahameng oa mocheso tse bolokiloeng ka foromo ea moqolo li ka ba le bothata ba ho khomarela li-interlayer (thibelo) le ho fetisetsa sekhomaretsi ho lehlakoreng le sa khomarelang. Lisosa tsa metso: memori ea rekere ea filimi ea PTFE le silicone PSA e tsamaea tlas'a khatello le mocheso. Tharollo: tsitsipano ea matsoelintsoeke - e tiileng holim'a likarolo tse ka ntle, e hlephileng holim'a likarolo tse ka hare - ho sebelisa taolo ea tsitsipano e koetsoeng. E tlatselletsa ka ho roala ha metsi, polokelo e nepahetseng (15-40°C, 30-70% RH), ho beoa ka mokhoa o otlolohileng, le ho potoloha ha rolo ka kotara.

Theipi ea mocheso o phahameng oa PTFE e sebelisoang ho kopana le lijo e tlameha ho hlompha meeli e thata ea mocheso: ≤260 ° C bakeng sa tšebeliso e tsoelang pele (ha ho na moeli oa nako), 260-300 ° C ho fihlela metsotso ea 30 feela, le > 300 ° C e thibetsoe. Theipi ke ea puisano e sa tobang feela (li-tray liners, sealer sealer), eseng ho phuthela lijo ka kotloloho. Le ka mohla u se ke ua sebetsa ntle le moroalo oa lijo (ho futhumatsa ka metsi). E nke sebaka haeba e qhibilihile, e tšehla, kapa e tsofetse.

Li-silicone tse nang le khatello ea maikutlo (PSA) bakeng sa litheipi tsa PTFE tsa mocheso o phahameng li fapana haholo ka ts'ebetso ea ho tsofala e phahameng ea mocheso. Methylphenyl silicone PSA e boloka> 85% matla a peel ka mor'a matsatsi a 250 ° C / 7, ha mofuta o tloaelehileng oa methyl o theohela ho 50-70%. Litsamaiso tsa tlatsetso (hydrosilylation) li fana ka botsitso bo betere ho feta pheko ea peroxide. Bakeng sa ts'ebeletso e tsoelang pele ea 200°C+, khetha limaraka tse phahameng tsa phenyl tse phekotsoeng.

Thermally conductive PTFE pressure-sensitive adhesive (PSA) litheipi li tlameha ho tsamaisa mocheso ha li ntse li khomarela. Ho eketsa li-filler ho ntlafatsa conductivity ea mocheso empa ho senya ho khomarela. Ho leka-lekana ho nepahetseng ho sebelisa likaroloana tse chitja (joalo ka skeleton e tsamaisang) e kopantsoeng le likaroloana tse ntle (ho tlatsa li-voids), ho boloka li-filler li tletse ka holim'a moeli oa percolation. Qoba li-flakes le likhoele; ba bolaea hlaba.

Theipi ea mocheso o phahameng oa PTFE e sebeletsa indasteri ea PV ka likarolo tse peli tse fapaneng: ts'ebetso e ka sebelisoang (e thibela ho khomarela ha EVA ho phalla ho laminator, mask a solder) le ho kenya letsoho nako e telele (sekoahelo sa libese, ho lokisa lebokose la matekoane). Bakeng sa tšebeliso e sa feleng ea ka hare, litheipi li tlameha ho feta IEC 61215: mocheso o mongobo oa 1000-2000h, UV, libaesekele tse futhumetseng (-40 ° C ho ea + 85 ° C), ka silicone PSA le shrinkage <1%.

Theipi ea PTFE e nang le mocheso o phahameng oa mocheso e sebelisoang ho lithipa tse koalang mocheso le lihlopha tsa ho tiisa li fana ka litekanyetso tse 'nè tsa motheo: e thibela ho khomarela polasetiki e qhibilihisitsoeng (e felisa nako ea ho theoha), e sireletsa ho koala ho theko e boima, ho etsa homogenizes mocheso / khatello ea litiiso tse tsitsitseng, le ho fokotsa khohlano ea filimi. Fiberglass-backed tape (0.13-0.25 mm) e nang le silicone PSA (≥260 ° C) e khothalletsoa. Theipi e ntšo ea anti-static bakeng sa mela e lebelo le holimo.

Thepa ea sekhomaretsi sa mouoane oa metsi ea PTFE ea sekhomaretsi e lekantsoe haholo-holo ke likoli (micropores, microcracks, fiber wicking) ho fapana le PTFE's intrinsic hydrophobicity. Filimi e hloekileng ea PTFE e fana ka WVTR e mahareng feela. Li-coat tse ngata le li-filler tsa lamellar (mica, li-flakes tsa khalase) li etsa hore ho be le phello ea labyrinth, e fokotsa haholo phetisetso ea mouoane. Bakeng sa ho tiisa mongobo o phahameng, totobatsa litlolo tse densified.

Creep resistance ea PTFE high-themperature sekhomareta tepi tlas'a nako e telele e sa khaotseng mojaro (haholo-holo ho 200-260 ° C) e khethoa ke lintlha tse peli: silicone PSA crosslink density (high crosslinking thibela phallo) le substrate mofuta (fiberglass-reinforced PTFE e hanyetsa serame creep; hloekileng PTFE filimi creeps). Sekhomaretsi se sa kopanngoeng se hloleha ka potlako mochesong o phahameng. Likhomaretsi tse teteaneng li eketsa kotsi ea ho ruruha.

Bakeng sa theipi e phahameng ea mocheso oa PTFE e sebelisoang lits'ebetsong tsa likhohlano tsa abrasive sliding, standard non-stick le mocheso o hanyetsang ha o lekana. Lintlha tsa bohlokoa tsa khetho: Taber abrasion tahlehelo (<15 mg/1000 cycles), e tlatsitsoeng PTFE coating (carbon/graphite/MoS₂), PV limit data, substrate strength (≥200 N/cm), le mating surface roughness (Ra 0.2-0.4 μm). Tšireletso e nepahetseng ea moeli le tlamahano e feletseng ke tsa bohlokoa bakeng sa bophelo bo bolelele.

PTFE substrate e hanela ho fafatsa letsoai ka tlhaho (ho monya metsi <0.01%). Leha ho le joalo, ts'ebetso ea theipi ka kakaretso e itšetlehile ka mofuta oa sekhomaretsi: silicone PSA e mamella maemo a leoatle (liteko tsa 500-1000h letsoai la spray,> 80% ho boloka lekhapetla); acrylic PSA e hloleha. Phekolo e nepahetseng ea holim'a metsi, kopo e se nang li-bubble, le ho tiisoa ka bohale ka silicone sealant ke tsa bohlokoa bakeng sa ho tšepahala ha nako e telele liforomong le likepeng tse lebōpong la leoatle.