PTFE ay-tɛmpracha klos na prɛsayz fɔ in nɔ-stik, ɔt-rɛsistant, ɛn anti-kɔrɛshɔn prɔpati. Bɔt di sem ɔlta-smol, lɔw-sɔfa-ɛnaji, kemikal inɛt sɔfa we mek i fayn fɔ rilis aplikeshɔn dɛn de mek bak i nɔ izi fɔ bon, print, ɔ laminate.
di sכlushכn na sכfayz tritmεnt – εnjinia כl tu di maykrostrכkchכ εn kεmikכl kכmכshכn fכ di PTFE sεf fכ kכnvכlt am frכm nכn-bכndabl to bכndabl.
Aokai PTFE de gi PTFE klos wit difrɛn sɔfayz tritmɛnt opshɔn dɛn. dis gayd de εksplen fכ kכmכn mεtכd dεm – kεmikכl εtch, plasma tritmεnt, korona tritmεnt, εn lεzεr tritmεnt – εn aw εvri wan de mכdify di sכfa fכs εn kεmikכl.
Dis wet-tritmεnt mεtכd de delivεr di mכst lכng-last ifekt εn de si di wayd aplikεshכn fכ PTFE bכnd.
1. Fyzikal strɔkchɔ modifyeshɔn
di sכdiכm-naftalin kכmpleks sכlushכn de etch di PTFE sεf bay we i de strip כf fluorine atכm dεm frכm di tכp-sכfa layεr. Di ɔrijinal miro-smɔl sɔfays de etch wit bɔku bɔku maykron- to nanoskayl ɔnikɔm- ɔ kɔral-shep pit ɛn kɔva dɛn. Dis roughening drastically enlarges di spesifik surface eria en fכm mεkanikal-intalכk ankכr pכynt fכ adhesives.
2. Kεmikכl strכkchכ modifyushכn
Dis na di men tin we de chenj. sכdiכm we de ridyus strכng wan de pul fכrin atכm dεm frכm di PTFE kabכn bakbon, we de lεf כnsatyuret kכbכn chen dεm εn fri radikal dεm. dis aktv sayt dεm de riak fכs wit mכsichכ εn כksijεn insay ambiεnt εya כ sכlushכn, we de introdכks pכlar fכnshכnal grup dεm we inklud kכbכnayl (C=O), haydroksil (-OH), εn kכbכksiyl (-COOH) . Na da tɛm de, di kabɔn we de na di wɔl de go ɔp ɛn di layt we dɛn dɔn trit kin tɔn dak-brawn ɔ brawn-blak.
3. Rizult
Wan kwasi-kabɔnayz aktiv layt de fɔm. Surface enaji de rayz frɔm ɔnda 20 dyn/cm fɔ untreated pure PTFE to above 40-50 dyn/cm , we ivin mek i ebul fɔ gɛt dairekt bon wit wata-based adhesives. Dis strɔkchɔral modifyeshɔn na pɔrmanent . Bɔt di layt we dɛn dɔn trit na jɔs sɔm maykron tin dɛn ɛn i nid fɔ tek tɛm protɛkt am.
Di Tritmɛnt fɔ Plasma
Dɛn kin yuz am fɔ pat ɔ in-layn prɔsesin, dɛn kin klas plasma tritmɛnt insay vaykum plasma ɛn atmosfɛrik-prɛshɔn plasma.
1. Fyzikal strɔkchɔ modifyeshɔn
Ha-enaji patikyula dεm (εlektrכn, ayכn, fri radikal) kכntinyu fכ bכm di PTFE sεf εn trigεr sputter-etching ifekt dεm. Wan ɔlta-fayn nanoskayl roughened tɛkstɔr de skapul pan di sɔfa; di wik bכnda layεr dεn de kכl am we i nכ de damej di כndalayn fayv glas sabstεrayt. Maykroskopik wan, di kristalin bulk-strכkchכ sεf de transfכm to wan amorphous maykro-rכf stet.
2. Kεmikכl strכkchכ modifyushכn
Proses gas de ditarmin di fainal fכnshכnal grup dεm:
inert gas tritmεnt (εgz., argon): I de brok CF bכnd dεm fכ jεnarεt sכfayz fri radikal dεm fכ sכbsεkvεnt graftin fכ polar grup dεm
Riaktiv gas dεm (oksijen, amonia): Graft haydroksil, kabכnayl, εn amino grup dεm dairekt wan pan di mכlikul chen dεm
3. Rizult
Dɛn kin gɛt wan klin, wetabl nano-roughened sɔfays. di bonding-enhancing effect de dεgrad ova tεm , so lamination fכ kכriכnt rayt afta plasma tritmεnt. I men merit na di ultra-shallow modified layt, we barely alters ova ol matirial tiknes en orijinal kala.
Korona Tritmɛnt
Wan ay-vɔlt dischaj tɛknik we de wok kwik kwik wan pan tin-film matirial dɛn yet de sɔfa wit fast pefɔmɛns rigrɛshɔn.
1. Fyzikal strɔkchɔ modifyeshɔn
High-voltage corona dischaj de jenarayz maykro-ak flash. Impεkt frכm hεy-εnεji εlektrכn dεm de frakshכn PTFE mכlikul chen dεm, de mek aktv sayt dεm, εn etch wan shalo, sכbtil rכf tεkschuכr. biכs fכ lכw enεji εn sכt riakshכn durashכn we yu kכmpεr wit plasma tritmεnt, korona de כnli prodyuz limited pit-lεk sכfayz rכf.
2. Kεmikכl strכkchכ modifyushכn
Ozon ɛn riaktiv ɔksijɛn spɛshal dɛn de prodyuz na dischaj zon. כksidεshכn de introdכks haydroksil grup dεm, pεrכksayd dεm, εn kabכnayl grup dεm fכ εlevεt sכfayz εnεji bכku bכku wan.
3. Rizult
di tritmεnt de כnli afekt wan ekstrim tכn sכfayz layεr wit כnstebul strכkchכral modifyushכn, we in adhesive-boosting ifekt de fεd kwik. i de fכs diploy as tεmporari in-layn adheshon-prכmot prכsεs. Fɔ tik, ful matirial lɛk PTFE ay-tɛmpracha klos, korona tritmɛnt jɔs de gi infɛriɔ rizɔlt kɔmpia wit plasma tritmɛnt ɛn kemikal ɛching.
Laser Tritmɛnt we dɛn kin yuz
Prɛsishɔn sɔfays modifyeshɔn we de yuz ɛksayz-lɛz ɔ femtɔsɛkɔnd-lɛz tɛknɔlɔji.
di hכy-εnεji lεzεr fכtכn dεm de brok hεy-strεng CF bכnd dεm, we de trigεr lokal difluorinεshכn εn kabכnayzεshכn. di εria dεm we dεn trit de divεlכp lεk dayamכnd kכbכn כ grafiti kכbכn layεr dεm wit εlevεt כksijεn kכntεnt. Ultraviolet excimer laser kin graft aktiv monomers via dairekt fotokemik riakshכn witout kabכnayzeshn.
3. Rizult
Sinkron, target, ɛn patɛn modifyeshɔn fɔ fizik tɛkstɔr ɛn kemikal polariti de ajɔst. di inεt polimכr sεf de kכnvכlt to wan kabכn-כksijεn-rich layεr wit kכntrolabl rכfεs εn hכy sεf εnεji, we de gi hεy-strεng εn lכng-last bכndin pכrformεns.
Sɔma – Fizik ɛn Kwɛmyuɛl Transfɔmeshɔn
Ɔl di 4 tritmɛnt we dɛn kin yuz kin mek tu impɔtant chenj dɛn:
1. Fyzikal transfכmeshכn
Di mɔlikul-lɛvɛl smol inɛt sɔfays de transfɔm to wan roughened topografi we kɔba wit maykro-nano-skel kaviti, grov, ɛn kɔral-stayl protrushɔn, we de gi bɔku bɔku mɛkanikal-intalɔk ankɔ poɛnt fɔ adhesive bonding.
We
Skel we de mek pɔsin ruf
Patna Tayp
Kεmikכl εtch
Maykro-nano we dɛn kɔl
Ɔnikɔm, we tan lɛk kɔral (random) .
Plasma tritmɛnt
Nano nano
Fayn, yunifom (amorphous) .
Korona tritmɛnt
Nano (we nɔ shayn) .
Limitɛd pit-layk
Laser tritmɛnt
Maykro
Rɛgyula arenjmɛnt dɛn (ripɛl, pila, grov) .
2. Kεmikכl transfכmeshכn
di lכw-εnεji sεf we dεn bil frכm pεrfluorokabכn chen (-CF2-CF2-) de kכnvכlt to ay-εnεji sεf we bכku wit כksijεn- εn naytrojen-kכntεn pכlar fכnshכnal grup dεm. di modifyed surface kin wet bay rεgulεr glu εn fכm haydrojεn bכnd כ ivin kεmikכl bכnd wit adhesive mכlikul dεm.
We
Surface Energy we dɛn dɔn ajɔst
Fɔ de sote go
Kεmikכl εtch
40-50 dyn/cm
Sote go
Plasma tritmɛnt
40-60 dyn/cm
Short winda (awa to dez) .
Korona tritmɛnt
38-45 dyn/cm
Rili shɔt (awa dɛn) .
Laser tritmɛnt
Yu kin kɔstɔmayz am
Sote go
Aokai PTFE de gi PTFE klos wit kemikal etch (permanent, dak surface) ɛn plasma tritmɛnt (klin, kala-prɛzɛv, shɔt aktiveshɔn winda) as standad opshɔn. Laser tritmɛnt de fɔ spɛshal aplikeshɔn dɛn we nid prɛsishɔn patɛn. Kontakt wi fɔ tɔk bɔt yu bonding rikwaymɛnt dɛn.
