A ye funteni-yɔrɔba ye PTFE kase ka kan ka siri ni dannaya ye -70°C (walima a dɔgɔyalenba) la ani ka kisi ni a bɛ to ka kɛ 200-260°C la – a janya bɛ tɛmɛ 300°C kan. O bɛ nɔrɔcogo dɔ de wajibiya min bɛ to ka wuli ka bɔ a nɔ na k’a sɔrɔ jɛɲɔgɔnya ma dɛsɛ walima ni ɲɔgɔn cɛ sirili ma kɛ a dancɛ fila la.
A ka c’a la, nɔrɔlan ye silikɔni tansiyɔn nɔrɔlan kɛrɛnkɛrɛnnen ye (PSA) min bɛ datugu PTFE filimuw kan minnu sɛgɛsɛgɛra sanfɛ walima fibreglasi fini kan min falen don PTFE la. Baara sabatili kunba min bɛ nin funteni finɛtiri belebeleba in kɔnɔ, o ye ka rezow jɔ min bɛ se ka ladamu – o ye dilancogo ye min bɛ balansi don funteni dɔgɔyalen na jisigi la, funteni caman na ka wuli ka wuli, ani ka funteni sɔgɔsɔgɔ muɲu.
Aokai PTFE ye PTFE kasɛtiw labɛn minnu ka funteni ka bon ni sariyakolow ye minnu ɲɛfɔlen don jukɔrɔ. Nin barokun in bɛ dilancogo jɔnjɔn naani ɲɛfɔ: tɛmɛsira layɛrɛ jɔcogo, kɔgɔji-gun bifaziki mikrosɔrɔcogo, gradient crosslinking, ani heat-stabilized composite fillers.
Tɛmɛsira Layɛrɛ jɔcogo Substrat ni Adhesive Layer cɛ
1. Gɛlɛya jɔnjɔn – PTFE sanfɛla fanga
PTFE bɛ sanfɛla fanga dɔgɔya kosɛbɛ (dynes 18-20/cm). Nɛgɛdaga tilennen bɛ teli ka bɔ funteni sɛgɛsɛgɛli waati la ka da funteni bonya coefficients bɛnbali kan – PTFE bɛ bonya siɲɛ 30-40 ka tɛmɛ fibreglasi kan.
2. Surface activation ani primer anchoring
Walasa k’o ɲɛnabɔ, PTFE sanfɛla bɛ kɛ ni kemikɛli ye ni sodium-naphthalene complexes ye walima plasma furakɛli walasa ka C=C fila-fila jɛɲɔgɔnyaw ni polar kuluw don minnu kɔnɔ oksizɛni bɛ sɔrɔ. O kɔfɛ, silikɔni daminɛfɛn kɛrɛnkɛrɛnnen dɔ (misali la, silane kafolan min bɛ vinili la) bɛ kɛ ka 'molecular bridge' kɛ ɲɔgɔndan na kemikɛli jɛɲɔgɔnya fɛ.
3. Degun-buffering interlayer
Furakɛcogo dɔw la, cɛmancɛ-lasitiki min ka dɔgɔn, min ka ductilité ka bon (silikɔni min bɛ i n’a fɔ jeli ni a yɔrɔw bɛ se ka wuli) bɛ don layini baarakɛlen ni nɔrɔlan kunba cɛ. O bɛ fɛnw minɛ ɲɔgɔn cɛ degunw fɛ minnu bɛ sɔrɔ funteni jiginni jugu fɛ ani ka nɛgɛdaga dakun kɔrɔta bali.
Kɔgɔji-gun bifasiki Microstructure Regulation
Matirisi nɔrɔlenba ye PSA sitɛmu klasiki ye min bɛ kɛ ni MQ silikɔni resin (gun fasa jɛnsɛnnen) ani polisiloksan ye min girinya ka bon (kɔgɔji fasa min bɛ taa ɲɛ).
1. MQ silikoni resin – gun gɛlɛn fasa
A bɛ jɛɲɔgɔnya, minɛ fanga, ani funteni caman sɔgɔli kɛlɛli di. A ka kɔlɔsili tigitigi M/Q molari hakɛ (a ka c’a la 0,6-0,9) ani a fɛnɲɛnamafagalanw hakɛ jɛnsɛnni bɛ a to a ka don cogo kelen na fasa tɛmɛnen kɔnɔ walasa ka farikoloɲɛnajɛ yɔrɔw dilan.
A bɛ tack teliya di, a bɛ jigin funteni dɔgɔya la, ani a bɛ se ka fɛn caman sɛgɛsɛgɛ. A ka ca a la, mɛtili vinili silikoni lastikuw walima metil fenili vinili silikɔni lastikuw bɛ sugandi.
3. Kɛrɛnkɛrɛnnenya la, ɲɛnabɔli kɛrɛnkɛrɛnnen ka ɲɛsin funteni hakɛ caman ma
hakɛ fitinin dɔ Siloxane yɔrɔ minnu ka fenili ka ca, olu bɛ don a la. Fenili kuluw bɛ polidimetililisilɔksan ka kristalizeli bali funteni dɔgɔyalen na, o bɛ nɔrɔlan ka sɔgɔsɔgɔninjɛ funteni dɔgɔya ka tɛmɛ -100°C kan. O waati kelen na, fenili kuluw bɛ funteni-oksidan tiɲɛni kunbɛnni sabati funteni caman na, o b’a to kɔgɔji fasa min bɛ taa ɲɛ, o bɛ se ka sɔgɔliba mara funteni finɛtiri belebeleba dɔ kɔnɔ.
Multi-Layer walima Gradient Crosslinking Design ka ɲɛsin funteni sɔgɔli ma
Fɛn fila-fila dacogo bɛ ta walasa ka balansi don funteni caman na creep resistance ni funteni dɔgɔman tackiness:
1. Kɔnɔna lamini (substrate fan) .
Relatively high crosslink density , min bɛ funteni caman minɛ fanga barikama di ani jɛɲɔgɔnya fanga i n’a fɔ fɛn min bɛ se ka sɔgɔsɔgɔ.
2. Kɛnɛma-yɔrɔ (bonding surface) .
Ultra-low crosslink density ni cakɛda molekilɛriw ye minnu bɛ se ka wuli kosɛbɛ, o bɛ a to ji teliya la adherends kan funteni dɔgɔman na ani tack fɔlɔ bɛrɛbɛrɛ.
O cogo kelen na, continue crosslink density gradient ka bɔ kɔnɔna na ka taa kɛnɛma, o bɛ dilan layini kelen kɔnɔ furakɛli fɛɛrɛw fɛ, ka baarakɛyɔrɔ gɛlɛnw ni yɔrɔ sɛgɛsɛgɛlenw fara ɲɔgɔn kan cogo la min tɛ gɛlɛya.
Aokai PTFE bɛ baara kɛ ni gradient crosslinking fɛɛrɛ ye walasa ka a to kaseti ka to ka wuli -70°C (o bɛ se ka kɛ sababu ye ka daminɛ tack ani conformability) ka sɔrɔ ka cohesive fanga mara 260°C (ka creep ni adhesive transfer bali).
Funteni-falen-falen-minɛnw minnu bɛ sabati ni funteni ye
Nano-scale fumed silica bɛ jɛnsɛn ka ɲɛ nɔrɔlen matirili kɔnɔ walasa ka barika don a la, ka fara ɲɔgɔn kan ni baarakɛcogo fasa suguya fila ye:
1. Fura minnu bɛ kɛ ka funteni kunbɛn
Sɛriyɔmu ɔkisidi, nɛgɛ ɔkisidi ani radikali wɛrɛw bɛ siloksan kɛrɛfɛ cakɛdaw gɛlɛya oksidan fɛ ani kɔkolo tiɲɛni bali funteni caman na. O farikolo tangalan ninnu bɛ baara kɛ waati janya 260°C la.
2. Fasa minnu bɛ funteni minɛ
Aluminiyɔmu nitiridi min bonya bɛ se mikron ma , aliminiyɔmu , a ɲɔgɔnnaw, olu bɛ funteni tiɲɛ joona walasa ka dɔ bɔ kɔnɔna funteni dalajɛli la ani ka kɔrɔya sumaya. O nafa ka bon kɛrɛnkɛrɛnnenya la baarakɛyɔrɔw la, yɔrɔ minnu na kasɛti bɛ kɛ funteni-yɔrɔ ye walima yɔrɔ minnu na funteni min bɛ bɔ substrat la, o bɛ se ka nɔrɔli teliya.
Fasa bɛɛ bɛ kɛ ni surface passivation walima silane furakɛli ye walasa ka modulu wuli kojugu ani ka nɔrɔli gɛlɛya ni funteni dɔgɔyara.
Kuma surun – Réseau adaptatif pour les conditions extrêmes
PTFE kasɛti minnu bɛ se ka funteni caman sɔrɔ, olu nɔrɔlen ye fɛnba ye min bɛ kɛ ni platini katalizi farali ye min bɛ kɛ ni mikrofase faralen ɲɔgɔn kan rezo ye min bɛ don MQ resin kemikɛli yɔrɔw la ani fenili cakɛda jan siloxanes hybrides. Gradient crosslinking ni co-crosslinking fɛɛrɛw sababu fɛ, a bɛ kelenya dafalen kɛ:
Ji teliya la ani a bɛ se ka wuli ka bɔ a nɔ na funteni dɔgɔyalen na
Jɛɲɔgɔnya barikama ni oksidan kɛlɛli baarakɛcogo funteni caman na
...a kɔnɔ, nɔrɔlen kelen kɔnɔ, min bɛ baarakɛcogo gɛlɛnw dafa minnu bɛ funteni hakɛ caman na.
Aokai PTFE bɛ PTFE kasɛtiw dilan minnu funteni ka bon ni nin nɔrɔlan dilanni ye. Laadalata fɛnsɛbɛnniw – i n’a fɔ a bonya, a janya, a jiginni, ani a fasa doni – olu bɛ sɔrɔ baarakɛcogo kɛrɛnkɛrɛnnenw magow kama.
N’aw b’a fɛ ka fɛn ɲɛfɔlenw dɔn, baarakɛcogo misaliw ani furaw kɛcogo minnu bɛ kɛ ka kɛɲɛ ni mɔgɔw sago ye an ka fɛn dilannenw bɛɛ lajɛlen na, i n’a fɔ PTFE finiw minnu bɛ funteni caman bɔ, PTFE kasɛti nɔrɔlenw, PTFE mesh conveyor belts, seamless fusing machine belts, single-sided PTFE coated cloth, high-temperature resistant conveyor belts and high-hemperature fiberglass fabrics, aw bɛ se ka anw sɔrɔ nin kanw fɛ minnu bɛ duguma:
An bɛ tugu baarakɛcogo hakilila la min ye baarakɛcogo ɲuman ni tilennenya ye, min b’an yɛrɛ di ka furaw bɛɛ lajɛlen di aw ma yɔrɔ kelen na ani dɛmɛ min bɛ kɛ ni hakili ye!
