Wetin kin mek di kɔtin nɔ ivin? Di ansa span 4 eria: kotin fɔmyulashɔn, kɔtin & sintering prɔses, sabstret kwaliti, ɛn prodakshɔn ɛnvayrɔmɛnt.
Aokai PTFE dɔn ɔptimayz dɛn tin ya akɔdin to tawzin prodakshɔn rɔn dɛn. Dis atikul de ɛksplen ɛni wan pan dɛn tin ya ɛn aw fɔ kɔntrol dɛn fɔ mek dɛn gɛt ay kwaliti, yunifom Fabrik we dɛn kɔt wit PTFE.
Coating Formulation – Di Rut Kɔz fɔ Yunifɔm
Fɔmulashɔn Paramita
Ideal Rɛnj / Rikwaymɛnt
Wetin Mek I Impɔtant
PTFE patikyula saiz
0,15 – 0,35 μm (D50) Di wan dɛn we de wok.
כva brayt distribushכn de impεr sabstεrayt pεnεtreshכn εn film-fכm pכrformεns
Molikul wet & viskositi
Balans – nɔ tu ay ɔ tu lɔw
Abnɔmal slɔri viskɔsiti de mek i nɔ ivin spre dairekt wan
Sɔlid tin dɛn we de insay
60±2% (tipik fɔ impregnashɔn) .
Sɔlid dɛn we ay pasmak kin mek i nɔ ivin shrink we dɛn de drɛy
Di we aw pɔsin kin skata
Nɔ agglomɛreshɔn nɔ de
di po dispersibiliti de mek di lokal patikyula klasta dεm εn di kכtin dεfεkt dεm
Fila kɔntinyu (ɛgz., sɛramik paoda) .
Kɔnsistɛns, we skata fayn fayn wan
Alters maykroskɔpik sɔfayz kɔndishɔn; inkonsistent fil de mek tik vεryushכn
Praktikal tip: Ɔltɛm tɛst ɛni batch fɔ PTFE ɛmulshɔn fɔ patikyula saiz distribyushɔn ɛn viskɔsiti bifo prodakshɔn. 10% chenj na di viskositi kin chenj di kכt pikכp bay 5-8%.
di rilayshכn bitwin PTFE patikyula saiz εn kכt yunifכmiti kin כndaεstimat כltεm. emulshכn dεm wit D50 dכn 0.12 μm fכ fכlכ tu izi, we de mek di ed biad fכmeshכn (tik kכt na di ed dεm) we dεn de drε. emulshכn dεm wit D50 oba 0.4 μm de pεnεtrat fayv glas pwεl, we de rizulta in sכfayz porositi εn wik fayv εnkapsulεshכn. di ideal rεnj (0.18-0.22 μm) de gi כl tu gud pεnεtreshכn εn smol film fכmeshכn. Wan ɔda impɔtant tin na di sɔfaynt we de insay – tumɔs sɔfaynt de mek i fɔm we dɛn de dip kɔtin, we de mek ɛya bɔbul dɛn we de bɔs ɛn lɛf krata. tu sכm sכfaynt de mek patikyula aglomεrayshכn εn ‘fish yay’ insay di fainal kכt. Fɔ kɔnsistɛns yunifɔmiti, wok wit wan singl emulshɔn spɔlayt ɛn aks fɔ batch sɛtifiket we de sho D50, D90, ɛn sɔfaynt pasɛnt.
Aokai PTFE de yuz כnli PTFE emulshכn wit tayt kכntrol patikyula saiz distribushכn (D50 0.18-0.22 μm, D90 <0.35 μm). Dis de mek shɔ se kɔnsistɛns penetreshɔn ɛn smol sɔfays finish akɔdin to ɛvri batch ɔf fabrik.
Coating & Sintering Proses – Disisiv Stej fɔ Yunifɔmiti
1. Kɔmpiashɔn fɔ di we aw dɛn de kɔt
We
Prinsipul
Yunifɔmiti Lɛvɛl
Di gud tin dɛn we pɔsin kin du
Di bad tin dɛn we kin apin
Dip kɔtin we dɛn kin yuz
Substrate de pas tru emulshɔn bat
Soba
Gud ɔvalayn wetin, fayv ɛnkapsuleshɔn
Longitudinal streaks, tik ed, tina senta
Bled kotin we dɛn kin kɔt
Prɛsishɔn dɔktɔ bled mita dɛn kɔtin
Preferred – di yunifom we ay pas ɔl
Smɔl, dense kɔtin, nɔ pinhol/strik
Sεnsitiv to di sabstεrayt flatnɛs
Sprɛy kɔtin
Atomized sprɛy aplikeshɔn
Pɔ
Gud fɔ shep dɛn we nɔ rɛgyula
Paramita-sɛnsitiv (distans, prɛshɔn), nɔ fayn fɔ mas prodakshɔn
Di bɛst we fɔ du tin na di industri: Kɔmbayn prɔses – dip kɔtin + bled kɔtin – dɛn dɔn adopt am bɔku bɔku wan. Dis de kɔba supia ɔvala wetin fɔ dip kɔtin wit ɔdasayz sɔfa flatnɛs fɔ bled kɔtin, balans fayba ɛnkapsuleshɔn trɛnk ɛn sɔfa prɛsishɔn.
2. Dray & Sintering Kɔndishɔn dɛn
Paramita
Ifɛkt pan Yunifɔmiti
Dray rεt
If yu nɔ dray ivin (tu fast ɔ tu slo) i kin mek di fim tik we nɔ kin kɔrɛkt, i kin krak, ɔ mak dɛn kin shrink
Sintering temperechur
PTFE fɔ mɛlt insay kɔntinyu film na 360-420°C . di tεmprachכ we nכ ivin de mek i nכ de mεlt εn lεvεl
di lokal hot/kol spat dεm kin mek di kכla dεvεyshכn (εgz., yכlכ na sכm εria dεm) .
Di dip + bled kɔmbayn prɔses na di industri standad fɔ ay-ɛnd PTFE ay-tɛmpracha fabrik dɛn. na dis mek: dip kכt nכmכ de prodyuz ‘meniscus ifekt’ – di kכt de tik na di ed dεm εn tכn na di sεntr bikoz fכ di sכfayz tεnshכn fכ di emulshכn as di fabrik de kכmכt na di bat. dis ed-to-senta vεryushכn kin bi 15-20% fכ di tכtal tik. di bled kכt nכmכ, we i de prodyuz flat sεf, de strכg wit pεnεtreshכn – di PTFE de stכp na di sכfa we nכ fulכp kכpsul di fayv glas fayb dεm, we de mek i nכ de abrashכn rεsistεns. di kכmbayn prכsεs: dip fכ pεnεtreshכn, dεn pas wans כnda wan dכkta bled fכ pul di εksεs εn lεvεl di sכfa. fכ optimal risכlt, di bled gap fכ set to 120-150% fכ di fainal dεsired kכtin tik, we de akכnt fכ shrinkage we dεn de dry. Tempracha profayl akɔdin to di sintering oven na impɔtant tin bak – 10°C gradient akɔdin to di wit kin mek strik dɛn we pɔsin kin si.
Plɛn wev: tayt tɛkstɔr, gud dimɛnshɔnal stebiliti, po permeabiliti. Satin wev: lכs strכkchכ, supεriכr pεnεtreshכn, hכy adheshon. Twill: intamɛdiet. Wev density difrεns dεm de afekt di emulshכn pεnεtreshכn dεm dairekt wan.
Di tin dɛn we de pwɛl di wɔl
Risidual parafin, lɔbrikɛnt frɔm drɔ/wev siriɔs wan de ambɔg ivin PTFE fɔ spre ɛn mek di kɔtin nɔ fayn
Surface roughness we di ples kin rɔf
di rɔf we nɔ kɔnsistɛns kin mek di kɔtin nɔ kin gɛda (tik na say dɛn we rɔf, tin na say dɛn we smol) .
Rikɔmɛndishɔn: Fɔ ay-yunifɔmiti aplikeshɔn (ɛgz., ɔt silin tep), yuz satin wev fayv glas fabrik wit ɔt klin fɔ pul ɔl di ɔrganik rɛsɛdyu bifo PTFE kɔtin.
Prodakshɔn Envayrɔmɛnt – Garanti fɔ Ay Yunifɔmiti
Envayrɔmɛnt Fakta
Di Kɔndishɔn we bɛtɛ pas ɔl
Wetin du
Tɛmprɛchɔ
20-25°C
Tεmprachכ we nכ kwalifay de wik kכtin lεvεl pεrformεns
Rilativ humiditi
<60% (i fayn: 40-55%)
di hכy humiditi de mek wata kכndens insay emulshכn, we de mek pinhol dεm
Fɔ mek di briz klin
Dust-free (dɛn kin advays fɔ mek dɛn filta HEPA) .
Dɔst we de kɔmɔt na di ays kin ɛmbas insay di kɔtin, we kin mek difrɛns dɛn na di say we dɛn de
Flɔ we di briz de flɔ
Kontrol, no dairekt draft
di fכlכ we di briz nכ de fכlכ ivin de mek di rεt dεm we nכ de dray rεgulεr akɔdin to di fabrik in wit
Praktikal notis: Insay ren sizin ɔ we di ples kin kol pasmak, tink bɔt fɔ rɔn wan dihumidifier na di kɔtin rum. Humidity we pas 70% de inkrεs di pinhol dεfεkt dεm bכku bכku wan.
Sɔma – Put Am Ɔl Togɛda
Tin
Mɔs Kritikal Kɔntrol Point
Ideal Valyu/Rɛnj
Fɔmulashɔn
Partikul saiz distribushɔn
D50 0,18-0,22 μm, D90 <0,35 μm
Fɔmulashɔn
Sɔlid tin dɛn we de insay
60±2% na di .
We
Di we aw dɛn de kɔt di tin dɛn
Dip + bled we dɛn jɔyn togɛda
We
Sintering temperechur yunifomiti
±5°C akɔs di ɔvin wit
Sabstret we dɛn kɔl
Wiv patɛn
Satin wev fɔ yunifom-kritikal ap dɛn
Sabstret we dɛn kɔl
Bifo dɛn trit am
Dɛn kin klin am wit ɔt, we nɔ gɛt ɛnitin we lɛf
Ples
Temperatur & humiditi we de na di wɔl
20-25°C, RH <60%.
In sɔmari , kɔtin yunifɔmiti fɔ PTFE ay-tɛmpracha fabrik dipen pan 4 intakɔnekt faktɔs. fכmyuleshכn fכ kכt (patikul saiz, viskositi, sכlid kכntεnt) na di rut kכz. di kכt εn sintering prכsεs – spεshal wan we yu de yuz dip + bled kכmbayn – na di disisiv stej. Substrate kwaliti ɛn prɛ-tritmɛnt de gi di fawndeshɔn. Prodakshɔn ɛnvayrɔmɛnt de garanti kɔnsistɛns.
Fɔ diman aplikeshɔn dɛn we nid ay yunifɔmiti (ɛgz., ɔt silin tep, rilis layna fɔ stika prodak), di dip + bled kɔmbayn prɔses na di industri gold standad. Monitor ɛni paramita ɔltɛm, kip di envayrɔmɛnt kɔndishɔn stebul, ɛn tɛst inkɔm emulshɔn fɔ patikyula saiz distribyushɔn.
Nid ɛp fɔ ajɔst kɔnsistɛns kɔtin yunifom fɔ yu PTFE fabrik? Aokai PTFE de gi kɔstɔm kɔtin savis ɛn prɔses kɔnsultɛshɔn. Kontakt wi wit yu target spesifikeshɔn ɛn prodakshɔn volyum.
