Sengoliloeng sena se bua ka mokhoa oa ho tsamaisana le lebelo la mochini oa ho roala le bolelele ba ontong ho netefatsa hore sekhomaretsi sa organosilicone se fihlella tekanyo ea pheko bakeng sa tepi ea PTFE e phahameng ea mocheso. Molao-motheo o tsamaisanang le oona: kakaretso ea nako ea bolulo t_total = bolelele ba onto bo sebetsang L ÷ lebelo la mola v e tlameha ho ba nako e fokolang e hlokahalang ea pheko. Fumana litšoaneleho tsa pheko ka DSC kapa liteko tsa sekhomaretsi tse thehang kamano ea 'mocheso - bonyane ba nako ea pheko'. Moetso o lekanang oa pheko: arola onto ka libaka, bala ti=Li/v le tcure(Ti), netefatsa ∑(ti/tcure(Ti)) ≥1. Mekhoa ea ho bala: beha libaka tsa mocheso tse nang le bolelele ba Li le mocheso Ti; seta lebelo la mola v, bala nako ea sebaka se seng le se seng sa bolulo le karolelano ea monehelo; pheta ho fihlela kakaretso ≥1 (tšireletseho margin 1.1-1.2 kgothaletswa).

Sengoliloeng sena se akaretsa litlamorao tsa mahlaseli a gamma ho sebopeho le thepa ea PTFE. Liphetoho tsa sebopeho sa lik'hemik'hale: mahlaseli a gamma a pshatla liketane tse ka sehloohong tsa CC le liketane tsa mahlakoreng a CF (G-boleng 3.0-3.5), e bakang scission e kholo ea ketane le ho theoha ho hoholo ha boima ba limolek'hule; ka oksijene, li-radicals tsa mahala li theha li-radicals tsa peroxy tse hlahisang acyl fluoride le lihlopha tsa ho qetela tsa carboxylic acid (hydrolyzing ho HF). Sebopeho sa condensed se fetoha: crystallinity e phahama qalong (lethal dose e tlaase, liketane tse khutšoanyane li hlophisa bocha) ebe lia oa (lethal dose le phahameng, likoli li senya likristale); sekhechana sa likristale tsa lamellar ho li-crystallite tse nyane tse nyametseng ka tatellano ea nako e telele. Ho senyeha ha thepa: bolelele nakong ea khefu bo fokotseha ho tloha ho 0.1 kGy moeeng, ho lahleheloa ke > 90% ho ~ 1kGy - thepa e fetoha e thata le e brittle; ntlha e qhibidihang e theoha ho tloha ho 327°C ho ya tlase ho 310°C; lihlopha tsa polar hanyenyane phahamisa dielectric kamehla / tahlehelo; ho fetoha ha bokahodimo ho tloha ho bosweu ho ya ho botsou/ botsho ka tahlehelo ya sephatsi.

Sengoliloeng sena se akaretsa melemo ea ts'ebeliso ea lesela la Teflon le mocheso o phahameng ka ho omisa li-electrode tsa lithium. E sebelisoa e le mabanta a conveyor kapa liner tsa ontong, e rarolla mathata a mararo a mantlha: slurry adhesion, corrosion, le electrode scratching. Libaka tse 'nè tsa melemo: Boleng ba Electrode le lihlahisoa - thepa e khahlanong le lithupa e thibela ho khomarela PVDF binder e nolofalletsang ho peeling ho feletseng habonolo; conductivity e tšoanang ea mocheso ho 100-140 ° C e thibela ho phunyeha / ho chesa; bokaholimo bo boreleli bo felisa mengopo le phofshoana e phoroselang; Ho tšoarella le botsitso ba ts'ebetso - khanyetso ea lik'hemik'hale khahlanong le mouoane oa NMP le mouoane oa electrolyte ntle le ho ruruha / botsofali; matla a phahameng a tsitsipano le botsitso ba sebopeho ho tsoa ho fiberglass substrate bakeng sa boemo bo nepahetseng; ho hloekisa habonolo ka masala a fokolang ha ho bapisoa le mabanta a tšepe.

Sengoliloeng sena se akaretsa ketsahalo ea delamination ea lesela la mocheso o phahameng oa Teflon. Delamination e bua ka karohano le ho ebola pakeng tsa holim'a PTFE barbotage le ka hare fiberglass base lesela kapa pakeng tsa le dikarolo tse ngata barbotage. 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.

Sengoliloeng sena se hlahloba liphetoho tsa sebopeho ho lesela la mocheso o phahameng oa PTFE nakong ea botsofali. Lintlha tse 'nè: PTFE coating microstructure - molecular chain scission and oxidation (carbonyl/carboxyl group formation), liphetoho tsa crystallinity (ho tsoha pele ho nako ebe lia putlama), sebopeho sa micro-crack le pinhole, phofo ea holim'a metsi; 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 khanya, ho ba phofshoana ha motho o ama, tahlehelo e felletseng ea ho feto-fetoha ha maemo. Moko oa botsofali: ts'ebetso e tsoelang pele ea 'ho silafatsoa ha mokhabiso → ho hloleha ha sebopeho → ho senyeha ha substrate.'

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 o ntseng o phahama ka mor'a ho phekola (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); Boemo ba 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 (masala a ho taboha ka hare) 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 kenya / ho laolla othomathiki; lesela la tšireletso la rabara le lelefatsang bophelo ba tšebeletso. Cell stringer soldering: mabanta a tsamaisang lisele le lente ka libaka tsa ho futhumatsa, tse nang le holim'a metsi a sa tsitsang 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 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'. 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 ka 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.

Sengoliloeng sena se fana ka mekhoa ea ho ntlafatsa khanyetso ea creep le botsitso ba nako e telele ba 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 e 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.

Sengoliloeng sena se hlalosa hore na PTFE e tlama joang ho substrate ea lesela la fiberglass ka lesela la mocheso o phahameng oa Teflon. Ho kopanya lik'hemik'hale ka kotloloho ha ho khonehe ka lebaka la matla a holimo a tlase a PTFE. Ho kopanya ho finyelloa ka: Mechanical interlocking ('mele tlamahano) - PTFE emulsion phunyeletse likheo faeba le ho tšoara likhoele tsa fiber ka mor'a hore sintering; Silane coupling agent pretreatment - e theha borokho ba limolek'hule lipakeng tsa likhoele tsa khalase tse sa tsitsang le organic primer; Lik'hemik'hale primer transition layer - ho sebelisa li-resin tsa PAI, PPS, PES kapa PEEK tse nang le PTFE micropowder, tse sebelisoang ka mor'a ho kopanya phekolo ho theha lera le matla la phetoho; Lamination ea filimi e khomarelang e chesang e chesang - FEP kapa PFA lifilimi (ntlha e qhibilihisang 260-310 ° C) e kopanya lifilimi tsa PTFE tse entsoeng pele ho lesela; Sebopeho sa 'gradient' ka 'multiple impregnation' le 'sintering cycles' - hlapolla pase ea pele e nang le binder/coupling agent, e kenella ka hare ho likhoele, e lateloe ke PTFE impregnations, ho theha sebopeho sa gradient ho tloha fiberglass ho ea ho PTFE e hloekileng.