Imajin se yu de yuz am PTFE ay-tɛmpracha tep insay kemikal tank layna, marin kebul rap, ɔ ɔnda wata silin aplikeshɔn. Dɛn kin put di tep insay wata fɔ sɔm wiks ɔ mɔnt dɛn. Yu tink se i go ol? Yu tink se di adeziv go fel? Yu tink se di fayv glas go sof?
Di ansa nɔ simpul. PTFE insεf – di 'King of Plastics' – na kεmikכl inεt to klos to כl di sכbstans dεm. Bɔt PTFE tep nɔto jɔs PTFE: i gɛt fayv glas sabstret ɛn prɛshɔn-sɛnsitiv adeziv (PSA) na di bak. dis kכmכpכnεnt dεm de bihayv bכku difrεnt כnda lכng tεm imεshכn.
Aokai PTFE dɔn tɛst bɔku tep gred dɛn na imɛshɔn kɔndishɔn dɛn. Dis atikul de brok di risk dɛm fɔ wata, sɔl wata, ɛn kemikal sɔlvushɔn – ɛn ɛksplen us kayn adeziv de liv.
Oval Prinsipul – PTFE Sabstret Na Strɔng, Adhesive Na Wik
Fɔ PTFE ay-tɛmpracha tep dɛn ɔnda lɔng tɛm imɛshɔn, di ɔvala pefɔmɛns kin sɔmariz as:
Fayba glas sabstret: I kin vulnerable – i kin sof insay wata fɔ lɔng tɛm.
Adhesive layer: Di men wik pɔynt – i de pwɛl ɔnda wata, sɔlvɛnt, ɔ kemikal fɔ lɔng tɛm.
Kɔmpɔnɛnt
Pɔfɔmɛnshɔn Ɔnda Imɛshɔn
Di Mod fɔ Failure
PTFE we dɛn kin kɔt
Wɛl dɔn
Nɔn nɔ de – de kɔntinyu fɔ de inert
Fabrik we dɛn mek wit fayv glas
Soba
Softin, trεnk lכs afta wik/mכnt
Silikɔn PSA
Fair to poor
Adhesion loss, swel, peeling
Akrilik PSA we dɛn kin yuz
I rili po
Rapid degradation in wata/sɔlvɛnt
Risk dɛn we kin mek pɔsin put yu wata insay wata fɔ lɔng tɛm
Aw wata kin afɛkt di tep:
Adhesive layer: Silicone pressure-sensitive adhesive de wik we i de pan wata mɔlyul dɛn fɔ lɔng tɛm. Wata de go insay di adhesive-substrate intafeys, we de ridyus di adheshon ɛn afta sɔm tɛm i de mek i nɔ wok kɔmplit wan. di trεnk fכ di pil kin dכp bay 40% afta 48 awa we dεn put am insay wata fכ sכm fכmulashכn dεm.
Fayba glas sabstret: Mɔs pan di kɔmɛshɔnal PTFE ay-tɛmpracha tep dɛn de yuz fayv glas fabrik we dɛn impregnated wit PTFE as di sabstret. Fayba glas go sof insay wata fɔ lɔng tɛm, we go mek di ɔl mɛkanikal trɛnk we di tep gɛt go dɔŋ. Dis na slo prכsεs (wik to mכnt) bכt i nכ de rivεrs.
Kɔntinyu fɔ imɛshɔn fɔ de ɔ wik – dɛn nɔ kin rɛkɔmɛnd fɔ standad silikon PSA tep dɛn.
Fɔ yuz ɔnda wata fɔ ɔltɛm, tink bɔt PTFE tep we nɔ gɛt adhesive wit mɛkanikal fikseshɔn.
Aokai PTFE advays kɔstɔma dɛn se standad silikon PSA tep fayn fɔ aplikeshɔn wit wata kɔntakt wan wan tɛm (ɛgz., it prɔsesin wasdɔwn) bɔt nɔto fɔ kɔntinyu fɔ sɔbmɛshɔn pas 72 awa. Fɔ lɔng tɛm, wi kin advays yu fɔ yuz fluorosilicone adhesive ɔ adhesive-free gred dɛn.
Sɔl wata Imɛshɔn – Risk we pas ɔl
If yu kɔmpia am wit klin wata, sɔl wata kin mek yu gɛt mɔ prɔblɛm:
di klorayd ayכn dεm de aksεlεrayt di pεnεtreshכn εn damej to di adhesive layεr.
Sɔl wata kin mek mɔ siriɔs kɔrɛshɔn to di fayv glas sabstret dɛn – di glas fayv dɛn kin lich ɛn wik.
Sɔl kristalizashɔn di tɛm we dɛn de drɛy saykl kin mek di adhesive bond mɛkanikal disrɔb.
Rikɔmɛndishɔn: Nɔ yuz standad PTFE tep fɔ lɔng tɛm we yu de put sɔl wata (ɛgz., marin kebul rap, ɔnda wata sɛns). Yuz perfluoropolyether (PFPE) adhesive ɔ adhesive-fri PTFE wit mɛkanikal klem.
Kεmikכl Sכlushכn Imεshכn – Dipεnd כlsay pan Adhesive
PTFE tep dεm de εksεl in kεmikכl rεsistεns – bכt dis de dipכnt bכku pan di tכp adhesive. Di risk dɛm we de ɔnda kemikal imɛshɔn kin difrɛn bad bad wan.
Tayp fɔ Adhesive
Kεmikכl Resistεns
Rikɔmɛndishɔn fɔ Aplikeshɔn
Akrilik PSA we dɛn kin yuz
Po – nכ de rεsist to strכng asid, strכng alkali, כ mכst כrganik sכlvεnt dεm
Striktli prohibit fɔ ɛni kemikal imersion
Kɔnvɛnshɔnal Silikɔn PSA (mɛnstrim) .
mכdarεt – i de rεsist wata, wik asid, wik alkali, εn sכm sכlvεnt dεm. i de fεl כnda lכng tεm imεshכn insay kכnsantreyt strכng asid, strכng alkali, εn hεli pכlar sכlvεnt dεm (εgz., aseton, MEK) .
I fayn fɔ layt kemikal splash protɛkshɔn nɔmɔ – nɔto fɔ kɔntinyu fɔ put am insay
Fluorosilikon Modify PSA
Gud – fa fawe pas ɔdinari silikon insay kemikal rɛsistɛns; i kin bia we pɔsin de insay di wata fɔ shɔt tɛm
I fayn fɔ midul tɛm imɛshɔn (de to wik) ɛn mɔdaret anti-kɔrɛshɔn kɔndishɔn
Pɛrfluoropɔliɛta / Flɔrin-bɛs Adhesive
Eksεlεnt – mach di kεmikכl rεsistεns fכ PTFE sabstεrayt; di kεmεkal dεm we kכmכn nכ de afekt am
Dɛn kin lɛk am fɔ say dɛn we kin kɔrɛkt bad bad wan ɛn we dɛn kin put dɛn insay fɔ lɔng tɛm (mɔnt dɛn). Di kɔst we ay pas dat.
Pure PTFE Tep (No adhesive) .
Superior – nɔ gɛt ɛnitin we gɛt fɔ du wit adhesive; kεmikכl rεsistεns we idεntikal to PTFE sabstεrayt
Top choice fɔ likwid imɛshɔn. I nid fɔ mek dɛn fiks am wit mɛkanikal (fɔ sial di trɛd, fɔ klem bolt, fɔ tay waya)
Fizik Pɛfɔmɛns Dɛgradɛshɔn – Ki Mɛtrik
Land
PTFE Sabstret we dɛn kɔl
Adhesive Layer we yu kin yuz
Notis dɛn
Pɛl Strɔng
N/A
I kin dכn bay 40% afta 48 awa wata imershכn (fכ UV-curable PSA) .
Ki indikɛtɔ fɔ di tep we nɔ wok
Tensile Strɔng we pɔsin kin gɛt
Nɔ lɔs afta 200 dez na 250°C
N/A
CF bond dɛn de gi ɔdasayz stebiliti
De swɛl
Nɔn – ivin insay 98% H2SO4 ɔ 40% HF
Swɛl insay sɔlvɛnt dɛn (toluɛn, asɛtɔn, MEK) .
Adhesive swelling de mek di ed lifting
Kɔrɛshɔn Resistɛns
>95% tεnsil strכng we dεn rεtεn afta 168h in bכyl 37% HCl
I kin difrɛn bay di kayn we aw i de
Fayba glas kin atak bay HF ɛn strɔng bays
Ilɛktrik Insuleshɔn
Tru
Digradɛshɔn kin ridyus di dayelɛktrik trɛnk
Pik prɔdak dɛn we de mit di insuleshɔn rikwaymɛnt dɛn
Ki takeaway: Di PTFE sabstret na remarkably stebul. Klose to ɔl di bad bad tin dɛn we kin apin kin kɔmɔt frɔm di adeziv ɛn, to smɔl, di fayv glas sabstret.
In sɔmari , PTFE ay-tɛmpracha tep kin yuz insay imɛshɔn aplikeshɔn – bɔt na if yu ɔndastand di wik pɔynt dɛn nɔmɔ. Di PTFE sabstret na klos fɔ invincible. Di fayv glas na mɔdaret vulnerable. Di adhesive na di praymar failure risk.
Fɔ fresh wata imɛshɔn ɔnda 72 awa, standad silikon PSA na akseptabl. Fɔ lɔng tɛm, sɔl wata, ɔ agresiv kemikal, ɔpgrɛd to fluorosilicone, PFPE adeziv, ɔ – di bɛst tin – adhesive-fri PTFE tep wit mɛkanikal fikseshɔn.
Nid wan PTFE tep spek fɔ wan spɛshal imɛshɔn ɛnvayrɔmɛnt? Aokai PTFE de gi yu plɛnti adhesive opshɔn ɛn i kin gi tɛst data fɔ yu kɔndishɔn. Kɔntakt wi wit yu midul, tɛmpracha, ɛn di tɛm we yu de ɛkspɛkt fɔ imɛshɔn.
