We PTFE tep nid fɔ dissipate ɔt – fɔ ɛgzampul, fɔ bon wan pawa kɔmpɔnɛnt to wan ɔt sink – di adeziv layt fɔ du tu tin wan tɛm: transfa ɔt ɛn ol tayt. we yu ad fil dεm we de kכndukt tεmכl (alumina, boron naytrayd, εtk) i de mek di tεmral kכnduktiviti bכt kכlכsכl כltεm i de ridyus di adheshon.
Di chalenj na fɔ maksimayz ɔt transfa we yu de lɔs as smɔl stik as pɔsibul . Di ansa de insay tri fil paramita: patikyula saiz, patikyula shep, ɛn lod pasɛnt.
Aokai PTFE don divεlכp tεmral kכnduktiv PTFE tep fɔ ilɛktronik ɛn industrial aplikeshɔn dɛn. Dis atikul de ɛksplen aw patikyula saiz, mɔfɔlɔji, ɛn lod de afɛkt di tred-ɔf, ɛn aw fɔ fɔmulayt fɔ di bɛst balans.
Partikul Sayz – Di Fayn-Kɔs Tred-Ɔf
patikyula saiz de gayd aw di fil dεm de fכm wan hεt-kכndukt nεtwכk εn aw di adeziv de wet di bכndin sεf.
1. Fayn patikyula dεm (nano to sabmaykrכn) .
Tεmכl ifekt: hכy sכfayz εria de lid to mכr patikyula-partikl kכntakt pכynt, bכt i de mכr intafεshal tεmכl rεsistεns (fכnכn skata). Sivεr aglomereshכn de limited kכnduktiviti improvεmεnt.
Adhesion effect: Fayn patikyula dεm de abzכp bכku bכku rεsin εn tackifiers, we de mek di adhesive at. Initial tak de drɔp shap shap. Flowabiliti de dכn, we de ridyus wet pan lכw-sכfayz-εnεji PTFE sabstεrayt dεm → lכw pεl trεnk.
Di jɔjmɛnt: Dɛn nɔ kin yuz am in wan. Ultra-fayn filεr dεm de gi marginal tεmכl gεn bכt dεstroy adheshon.
2. Kכs kכs patikyula dεm (maykron to tεn maykron) .
Tεmכl ifekt: Fכ kכntakt pכynt dεm bכt lכng wan wan hεt kכndukshכn pat dεm. We dɛn stak dɛn klos along di adhesive tiknes dairekshɔn, dɛn de gi gud tru-plan kɔnduktiviti.
Adhesion effect: Low surface area adsorb less resin, we de kip adhesive softness. כltu, if patikyula dεm tik lεk כ tik pas di adhesive layεr (tipikli 25-100 μm), dεn de rכf di tep sεf, ridyus ifektiv bכnd εria, εn mek strεs kכnsantreshכn pכynt dεm.
Vɛdikt: Dɛn kin yuz am as di praymari kɔnduktiv skel, bɔt i fɔ saiz dɔŋ di adhesive tiknes.
3. Di sɔlvushɔn – bimodal blɛndin
Miks kɔs ɛn fayn patikyula dɛn pan spɛshal rɛsɛshɔn dɛn. Fayn gren dεm de fulכp di void dεm bitwin kכs kכs patikyula dεm, we de achiv klosest pak. Wit di sem totכl fil lod, bimodal gredin de inkrεs patikyula kכntakt pכynt (bεtε kכnduktiviti) כ, כda we, i de rich di tכtal kכnduktiviti wit lεs tכtal fil , we de lεf mכr kכntinyu rεsin fεz fכ prεsiv adheshon.
Aokai PTFE rεkomεndεshכn : fכ 50 μm tik adhesive layεr, yuz kכs patikyula dεm we 20-30 μm we dεn blεnd wit fayn patikyula dεm we 1-5 μm. Dis bimodal aprɔch na di ki fɔ balans prɔpati dɛn.
Partikul Mɔfɔlɔji – Shep Impɔtant Big wan
Nɔn-sfɛrikal fil dɛn de alaynɛd di tɛm we dɛn de kɔt ɛn drɛy, we de afɛkt tru-plɛyn (Z-dayrɛkshɔn) tɛmal kɔnduktiviti ɛn adheshon.
Tεmral ifekt: Isotropik. Partikul dεm de stak izi wan along di tiknes dεyshכn, gud fכ tru-plan hεt dissipεshכn.
Adhesion effect: Smɔl say dɛn nɔ de ambɔg di rɛsin flɔ. I de kip kol-flɔ ɛn sɔfa wet. pan ɔl di shep dɛn we ikwal lod, sfɛra dɛn kin kip di bɛst adheshon – spɛshal wan di initial tak.
Tεmכl ifekt: Ay aspεkt rεshכn de gi εksεlεnt in-plεn kכnduktiviti, bכt flek dεm de alaynt paralel to di sabstεrayt, we de gi sכm tru-plεn improvεmεnt – po fכ PTFE tep dεm we nid vεtikal hεt tכnfכs.
Adhesion effect: Flakes de akt lεk patishכn film, blכk plastic fכ fכlכ εn drastikli kכt initial tak. Shap ed dεm de mek strεs kכnsantreshכn, we de ridyus di trεnk fכ di peel.
Balans disadvantej: Po fit fכ Z-dayrεkshכn tεmכl nid dεm, i de rili impεr inhεrent stika. Nɔto rɛkɔmɛnd as di men fila.
3. Fila dɛn we gɛt fayv ɔ we nɔ de ɔltɛm
Tεmכl ifekt: Ay aspεkt rεshכn kin bil kכnduktiv nεtwכk dεm na lכw lod.
Adheshon ifekt: Drastikli inkrεs adhesive viskositi, stiff PSA via mεkanikal intalכk, εn destroy tackiness. Shap edj dɛn de damej di adhesive-PTFE intafɛs.
Di jɔjmɛnt: Dɛn nɔ kin yuz am bɔku tɛm as di men tin we dɛn kin yuz fɔ ful-ɔp; na smɔl adishɔn nɔmɔ as ɔgzilari brij matirial.
Fila Lod – Fɔ fɛn di Pɛrkolashɔn Swit Spɔt
As di fila lod de inkrεs, tεmral kכnduktiviti de go כp sloslo fכs, dεn de jomp shap shap na di pεrkolashכn thrεshold , dεn de jomp plat. Bɔt di adheshon de go dɔŋ ɔltɛm.
1. Lɔw lod (<30 vol%) .
Fila na ayland dɛn we dɛn dɔn aysol insay wan kɔntinyu rɛsin matris. Tɛmral kɔnduktiviti nɔ kin rili impɔtant. Adheshon de stil klos to pure PSA. Sef zon fɔ kip tak, bɔt thermal gain nɔ impɔtant.
2. Midul-to-hay lod (30-60 vol%) – di krichכl winda
di patikyula dεm de bigin fכ tכch εn fכm kכnduktiv path dεm. Tɛmral kɔnduktiviti de go ɔp ɛkspɔnɛnshal wan. Na da tɛm de, di kɔntinyu rɛsin matris kin bi fragmɛnt. Adhesive kin tɔn brittle; initial tak εn peel trεnk dכp shap shap.
Dis na di ɔptimayzeshɔn zon. di gol na fכ opereyt na di lכw εnd pan di pεrkolashכn thrεshold – hכy inof fכ mit tεmral spεs, lכw inof fכ rεtεn wan kכntinyu rεsin fεz fכ akseptabl adheshon.
3. Ultra-hay lod (>60 vol%) .
Dens patikyula pak de slo fכ tεmral gεn (plateau). Rɛsin nɔ go ebul fɔ ful-ɔp ɔl di say dɛn we nɔ de; voids de fɔm. Adhesive kin dray, brittle, ɛn i kin lɛf smɔl fɔ lɛ i nɔ tacky. Di tep kin bi wan fraylayz tɛmal fim. Prɔpati balans kin lɔs ɔl.
Speshal not fɔ PTFE tep (silikon PSA): Silikɔn gɛt lɔwa kɔhyeshɔn ɛnaji ɛn po fila kɔmpatibiliti pas akrilik. I de tolɛret lɔwa maksimal fil lod. If yu ful-ɔp pasmak, dat kin mek di adhesive pulverization.
Aokai PTFE empirical data : Fכ sfεrikal alumina in silikon PSA, di pεrkolashכn thrεshold na roughly 35-45 vol%. Optimal bεlε de achy arawnd 40-45 vol% wit bimodal distribushכn. כp 55 vol%, adheshon de bi unakseptabl fכ mכst aplikεshכn dεm.
yuz sfεrik kכs patikyula dεm (20-30 μm) as di praymar kכnduktiv skel – dεn de gi tru-plεn kכnduktiviti wit sכm adheshon lכs.
ad fayn fayn patikyula dεm (1-5 μm) fכ mek wan bimodal distribushכn – i de fulכp di void dεm, i de ridyus di tכtal fil we dεn nid, i de kip di rεsin matris.
Kip totכl filכd lod na di lכw-midul rεnj fכ di pεrkolashכn trεshold (arawnd 40-45 vol% fכ sfεrikal alumina in silikon PSA).
Limit flaky ɔ fibrous filers to <5 wt% if nid de at ɔl – dɛn de harm tak ɛn gi smɔl tru-plan bɛnifit.
Di rizulyt: Na PSA tep we de kɔnduktiv wam wam we kin rili stik ɛn las.
Aokai PTFE de mek thermal konduktiv PTFE tep dɛn we de yuz dis bimodal sfɛrikal fila strateji. Wi kin tayla thermal conductivity ɛn adhesion lɛvɛl dɛn to yu aplikeshɔn.
Faynal Takeaway we dɛn kin tek
Improving thermal conductivity in PTFE adhesive tapes ɔltɛm de fɛt agens adhesion. di bεst kכmprכmis kכmכt frכm sfεrikal patikyula dεm + bimodal saiz distribushכn + lodכn jכs pas pεrkolashכn . Avɔyd flɛks ɛn fayv pas yu aplikeshɔn spɛshal nid in-plɛyn kɔnduktiviti ɛn i kin tolɛret lɔw tak.
Fɔ ay-pɔfɔmɛnshɔn bonding wit ɔt disipeshɔn, tɛmali kɔnduktiv PTFE tep na pruf sɔlvishɔn. Kontakt Aokai PTFE fɔ fɔmyulashɔn dɛn we mach to yu tɛmal ɛn pil rikwaymɛnt dɛn.
