Sengoliloeng sena se akaretsa litaba tsa silika le maemo a ts'ebeliso ea lesela la fiber e phahameng ea silika. Tlhaloso ea litaba tsa silika: pontšo ea mantlha ke SiO₂ ≥96% (e tloaelehileng 96-98%, litekanyetso tsa premium> 99% ka acid leaching le sintering, e atamelang fiber e hloekileng ea quartz). Tlhahiso: Lesela la E-glass le kena ka har'a asiti e chesang ho qhaqha likarolo tseo e seng tsa silika (boron oxide, sodium oxide), ho etsa skeleton e nang le porous high-silica skeleton, ebe e siloa bakeng sa densification. Melemo ea mantlha: ts'ebeletso e tsoelang pele ho 900 ° C libakeng tse nang le oxidizing, nako e khuts'oane ka holimo ho 1200 ° C, sebaka sa ho nolofatsa haufi le 1700 ° C; botsitso ba lik'hemik'hale khahlanong le li-acids / alkali tse ngata ntle le HF le hot phosphoric acid; dielectric e tlaase kamehla le e tsitsitseng e tsitsitseng mocheso o phahameng.

Sengoliloeng sena se akaretsa ketsahalo ea delamination ea lesela la mocheso o phahameng oa Teflon. Delamination e bolela karohano le ho ebola pakeng tsa holim'a PTFE barbotage le ka hare fiberglass base lesela kapa pakeng tsa multiple barbota le dikarolo. Lipontšo tse bonahalang: ho phatloha / ho phunyeha (li-bubble tse phahamisitsoeng tse nang le maikutlo a sekoti) e le matšoao a pele; interlayer peeling ka ho roala ho tlosoa habonolo ka maqephe a pepesang fiberglass e tšoeu; bosweu ba sebakeng se lateloang ke ho benya ka mora mocheso/kgohlano. Lisosa tse ka sehloohong: Tšenyo ea khatello ea mocheso - li-coefficients tse fapaneng tsa ho atolosa mocheso pakeng tsa PTFE le fiberglass li baka khatello ea kelello ka hare, ho futhumatsa ka potlako / ho pholile ho etsa hore ho be le sesole; Litšitiso tsa boleng ba tlhahiso - phekolo e sa lekaneng ea fiberglass holim'a metsi, ho kenngoa ha PTFE e fokolang, sintering e sa lekaneng e bakang maqhama a fokolang a sefahleho.

Sehlooho sena se hlalosa litšobotsi tsa microstructural tsa Teflon lesela la mocheso o phahameng oa mocheso. Substrate skeleton: fiber fiber weaving texture ka plain/twill weave with high porosity (micron-scale pores ka hare ho fiber bundles le at warp-weft nodes) ho fana ka sebaka bakeng sa ho kenngoa ha PTFE. Coating morphology: encapsulation encapsulation e felletseng e theha 'konkreite e matlafalitsoeng'' moo likhoele tsa khalase li matlafatsang mohato, PTFE ke matrix a tsoelang pele; holim'a li-nodular microstructure ea li-nodule (likaroloana) tse kopantsoeng ke li-fibrils tse ntle tse entsoeng nakong ea sintering; lera le sa khaotseng le letenya la letlalo (tse 'maloa ho isa ho mashome a li-micron tse botenya) la PTFE e hloekileng e le mokoallo oa bohlokoa bakeng sa ho se sebetse ha lik'hemik'hale, thepa e sa thupeng le ho kenya motlakase.

Sengoliloeng sena se hlahloba litlamorao tsa taolo ea tsitsipano ea webo nakong ea ho roala theipi ea mocheso o phahameng oa Teflon ho PTFE substrate flatness le ho ts'oana ha sekhomaretsi. Liphello ho flatness ea substrate: tsitsipano e fetang moeli oa rekere e bakang ho otlolla le melala ea polasetiki e ke keng ea qojoa (longitudinal elongation, transverse narrowing), ho theha botsoa, ​​wrinkles le wavy dipaterone; PTFE e kena tlas'a tsitsipano e tsitsitseng e fetoha 'hatsetsi' ka mor'a ho pholile, e bakang ho se lekane ha holimo; tsitsipano e sa tsitsang e tsoang ho ho se tsamaisane ha lirolara e fokolang e baka mats'oafo a kobehileng, makhopho a bohareng, le matšoao a hlephileng nako le nako.

Sehlooho sena se hlahloba liphetoho tsa meralo ea lesela la PTFE le mocheso o phahameng nakong ea botsofali. Lintlha tse 'nè: PTFE coating microstructure - molecular chain scission and oxidation (carbonyl/carboxyl group formation), liphetoho tsa crystallinity (tsoho ea pele ebe e oa), micro-crack le pinhole formation, holim'a phofo; Glass fiber substrate and interface - sizing/coupling agent decomposition e baka tahlehelo ea bonding, interfacial debonding le delamination (blistering, white areas), glass fiber network khoholeho le embrittlement, alkali metal oxide precipitation e bakang khatello ea maikutlo; Sebopeho le ponahalo ea macroscopic - phetoho ea 'mala (e tšoeu → beige→ sootho → e ntšo), ho honyela ho hoholo le ho kobeha, ho putlama ha bokaholimo le ho lahleheloa ke gloss, phofshoana ha motho a ama, tahlehelo e felletseng ea ho feto-fetoha ha maemo. Moko oa botsofali: ts'ebetso e tsoelang pele ea 'ho silafala ha mokhabiso → ho se sebetse hantle ha sebopeho → ho senyeha ha karoloana.'

Sengoliloeng sena se akaretsa mokhoa oa ho laola nako ea sintering ea lesela la mocheso o phahameng oa PTFE. Mokhoa oa taolo ea mantlha: phetoho ea lebelo la mohala. Sintering nako = bolelele ba karolo e futhumatsang e sebetsang ÷ lebelo la leeto la lesela. Mocheso o sebetsang hantle oa sintering ke 350°C (kaholimo ho thempereichara e baloa joalo ka nako ea sintering). Kabo ea mocheso oa libaka tse ngata: preheating (100-250 ° C), sintering (360-395 ° C), boemo ba mocheso o phahameng (380-390 ° C), ho pholisa (ka tlase ho 300 ° C). Linako tsa litšupiso ho 380-390 ° C: bobebe (0.08-0.13mm) metsotsoana e 30-60; maemo a tloaelehileng (0.18-0.25mm) metsotso e 1.5-3; boima (≥0.35mm) metsotso e 3-5. Ho tsebahatsa le ho lokisoa: ho fokotseha ho tlase (matla a tlase, phokotso ea phofo, mapetsong a manyane) → fokotsa lebelo ho eketsa nako; ho sintering ho feta tekano (mosehla, ho brittleness, mosi o mosoeu) → eketsa lebelo ho khutsufatsa bolulo. Tekano ea nako ea mocheso e lumella ho sintering ka potlako ea mocheso o phahameng (395-405 ° C, metsotsoana) kapa mocheso o tlaase o liehang (360-375 ° C, 5-8 metsotso).

Sehlooho sena se hlalosa mohlala oa phetoho ka matla a momahaneng a PTFE mocheso o phahameng oa mocheso oa sekhomaretsi ka mor'a botsofali bo phahameng ba mocheso. Mokhoa oa mekhahlelo e meraro: Mokhahlelo oa ho phahama ka mor'a ho folisa (ho pepeseha ha mocheso oa pele ho 200-260 ° C, lihlopha tse setseng tse sebetsang li tsoela pele ho tšela, ho kopana ho eketseha haholo); Mokhahlelo o tsitsitseng oa ho leka-lekanya (ho phethoa ha mekhoa ea ho kopanya, bonngoe bo lula bo tsitsitse ka nako e telele); Sekhahla sa ho senyeha le ho fokotseha (nako e feteletseng / mocheso o baka ho senyeha ha ketane e kholo, momahano oa fokotseha, sekhomaretsi se nolofatsa 'me se fetoha tacky). Lisosa tsa metso ea ho hloleha ha momahano (ho taboha ha ka hare ho siea masala) le ho peperana (ho phalla ho batang ho tloha mapheong ka lebaka la ho fokotseha ha modulus) ho hlahlojoa.

Sengoliloeng sena se qaqisa ts'ebeliso ea lesela la mocheso o phahameng oa Teflon indastering ea matla a letsatsi. Kopo ea mantlha ho lamination ea module: lesela la ho lokolla le behiloeng ka holimo / ka tlase ho li-module tsa PV le thibela EVA e qhibilihisitsoeng (140-150 ° C) ho khomarela platen e futhumatsang kapa poleiti ea rabara, lisebelisoa tse sireletsang le ho etsa bonnete ba hore libaka tse boreleli tsa module; mabanta a conveyor a laminator bakeng sa ho jarolla / ho laolla othomathike; lesela la tšireletso la rabara le lelefatsang bophelo ba tšebeletso. Cell stringer soldering: mabanta a conveyor a tsamaisang lisele le lente ka libaka tsa ho futhumatsa, tse nang le holim'a metsi a se nang lithupa tse hanyetsanang le ho phalla le li-splashes tsa solder; li-cushions tsa sethala sa ho futhumatsa bakeng sa li-workstations tsa soldering. Mocheso o phahameng oa mocheso: ho roala li-tubes tse futhumatsang, li-thermocouples, likhoele ka li-laminator le lionto tse phekolang; thepa e sireletsang mocheso likharetene le lithebe.

Sengoliloeng sena se akaretsa mehato ea pretreatment e hlokahalang bakeng sa lesela la fiberglass pele ho PTFE emulsion impregnation. Mohato oa 1: Phekolo e futhumatsang / dewaxing ka 300-450 ° C ho tlosa boka ba parafine ka botlalo le oli ho tloha ka holim'a fiber ( boka ba parafine, li-starch derivatives), likarolo tse setseng tse hlokahalang ka tlase ho 0.2%, ho hlahisa 'lesela le tlositsoeng mocheso.' Mohato oa 2: Phekolo ea lik'hemik'hale ka holim'a metsi - kopo ea silane, KH-50 KH-50 A-174) ho theha filimi e kopanyang lik'hemik'hale holim'a fiber holim'a fiber, e nolofalletsang borokho ba molek'hule pakeng tsa likhoele tsa khalase le PTFE ea tlhaho; masela a rekisoang esale pele a ka tlola mohato ona empa a tlameha ho netefatsoa. Mohato oa 3: Ho omisa le ho futhumatsa pele - ho omisa ho 80-120 ° C bakeng sa lihora tse 1-2 ho fokotsa mongobo o ka tlase ho 0.1%, ho thibela ho thehoa ha bubble / void nakong ea ho phekola.

Sehlooho sena se fana ka mekhoa ea ho ntlafatsa khanyetso ea creep le botsitso ba nako e telele ea tepi ea Teflon e phahameng ea mocheso. Maqheka a kenyelletsa: Ho ntlafatsa marang-rang a limolek'hule - high MQ silicone resin / gum ratio (1.2: 1-2: 1) e theha libaka tse thata tsa mekhahlelo e thata; ho kenngoa ha lihlopha tsa phenyl (20-30 mol%) ho sitisa ketane ea ketane; crosslink boima ba molek'hule e laoloang ho 5,000-15,000 g / mol; Gradient modulus multilayer sekgomaretsi sebopeho - primer-ankora lera (1-3μm) le silane coupling moemeli, phahameng-modulus momahaneng lera (30-50μm) e le skeleton thiba manganga, viscoelastic tshebetso lera (3-8μm) bakeng sa holim'a metsi; Nanofillers - silika e tukang (10-25 wt%) e nang le phetoho ea bokaholimo e etsa hore ho be le ho hokahana ha 'mele ho fetohang.