Ni a PTFE nɔrɔlan min bɛ funteni caman bɔ, o bɛ kɛ yɔrɔ la min ka suma – a fɔ, 200°C dɔgɔkun walima kalo caman kɔnɔ – silikɔni tansiyɔn nɔrɔlan (PSA) bɛ se ka Changé. A ɲɛkisɛ fanga bɛ se ka wuli, ka bin, walima ka tolenw wuli. Jɛɲɔgɔnya bɛ se ka caya (brittleness) walima ka dɔgɔya (cohesive failure).
Silikoni PSA bɛɛ tɛ kɛ cogo kelen na. Danfara bɛ jigin polimɛriw kɛcogo la (metil ni metilfenili), ɲɔgɔndan kɛcogo (perokisidi ni farali furakɛli), ani MQ resin ni lastikuw hakɛ.
Aokai PTFE bɛ baara kɛ ni silikoni PSA hakɛ caman ye an ka kasɛtiw kɔnɔ. Nin gafe in bɛ min bɛ kɛ peel fanga ni ɲɔgɔndɛmɛ na kɔrɔya kɔfɛ funteni caman kɔfɛ, o ɲɛfɔ kalasi kelen-kelen bɛɛ kama, ani cogo min na aw bɛ se ka min bɛnnen sugandi aw ka baara kama.
Fɛn min bɛ kɛ Silicone PSA la funteni kɔrɔ – Dɛsɛ cogoya fila
Ni silikoni PSAw kɔrɔla funteni caman na (200-250°C), silikɔni PSAw bɛ se ka fɛn fila kɛ minnu bɛ ɲɔgɔn sɔsɔ:
1. Kɔrɔsili kɔfɛ (o bɛ na ni bɔgɔbɔgɔli ye) .
Baarakɛjɛkulu minnu ma jaabi sɔrɔ, olu bɛ taa a fɛ ka jaabi di, ka dɔ fara ɲɔgɔndan density kan. Fɔlɔ fanga bɛ se ka wuli waati dɔɔni, o kɔ a bɛ bin kosɛbɛ ni nɔrɔlan bɛ gɛlɛya kojugu. A bɛ iko static shear strength bɛ bonya, nka minɛ fanga ni impact resistance bɛ tiɲɛ. Filimu nɔrɔlen bɛ gɛlɛya ani a bɛ kari.
2. Kɔkolo tiɲɛni (o bɛ na ni ɲɛgɛnɛsira bɔnɛni ni a tolenw ye) .
Polidimetilsiloksan kɔkolo bɛ kɛ sikɔlɔ la ani ka cakɛda tigɛ. Peel fanga bɛ jigin tuma bɛɛ. Nɛgɛ bɛ se ka wuli ka taa substrat (tolen) la walima ka dɛsɛ ka jɛ. O ka teli ka kɛ metil silikoni PSAw la minnu ka dɔgɔn.
Paramètres modulateurs kunbabaw:
Fenili hakɛ (a ka ca = funteni kunbɛncogo ka fisa) .
Crosslink density ani furakɛli suguya (furakɛli faralen ɲɔgɔn kan ni perokisidi furakɛli) .
MQ resin ni silicone rubber hakɛ
Karamɔgɔya danfaralenw ka kɛɲɛ ni kemikoro sigicogo ye
Ɲɛgɛnɛsiraw marali kɔrɔya kɔfɛ (200-250°C): Ɲɛgɛnɛsiraw fanga bɛ wuli dɔɔni a daminɛ na, o kɔ a bɛ dɔgɔya. Tile 7 kɔfɛ 250°C la, a ɲɛkisɛw marali bɛ kɛ 50-70% dɔrɔn ye . Baara kɛcogo bɛ jigin joona ni funteni ka bon. Tiɲɛni bɛ bɔ dimetil siloxane kɔkolo ka sikɔlɔ la.
Jɛɲɔgɔnya sabatili : Perokisidi furakɛlicogo (misali la, KR-101) bɛ ni daminɛfɛn tolenw ye minnu bɛ kɛ sababu ye ka furakɛli kɔfɛ min tɛ kɔlɔsi – nɔrɔli bɛ gɛlɛya ani ka sɔgɔsɔgɔ. Fɔlɔ sɔgɔli fanga bɛ ɲɛ, nka minɛ fanga bɛ dɔgɔya, wa jɛɲɔgɔnya dɛsɛ bɛ kɛ funteni kɔrɔ. Fura minnu bɛ kɛ ni farali ye, olu ka fisa dɔɔni nka u dan ye hali bi dimetil kɔkolo ka funteni kunbɛncogo jugu fɛ.
2. Metilfenili polisiloksan (min bɛ se ka funteni caman kɛlɛ) .
A ɲɛkisɛw marali kɔrɔya kɔfɛ: Fenili kɛrɛfɛ cakɛdaw bɛ dimetil yɔrɔw pake tuma bɛɛ tiɲɛ ani ka sikɔlɔsi tiɲɛni bali. Tile 7 kɔfɛ 250°C la, a ɲɛkisɛ fanga marali bɛ tɛmɛ 85% kan . Fenili caman bɛ sɔrɔ fura minnu na, olu bɛ ɲɛgɛnɛsira sabatilenw mara hali ni u bɛ 260-288°C la.
Jɛɲɔgɔnya sabatili: A ka ɲi kosɛbɛ. Sɔgɔsɔgɔninjɛ fanga bɛ Changé dɔɔnin dɔɔnin; minɛ fanga marali bɛ tɛmɛ 80% kan. Nɔrɔlan bɛ to ka wuli ka bɔ a nɔ na waati jan kɔnɔ k’a sɔrɔ a ma tiɲɛ walima ka to a la. Fɛnɲɛnɛma hakɛ caman minnu furakɛra ni farali ye, olu ye silikɔni PSA ɲuman ye min bɛ sabati funteni na.
3. Kɛrɛnkɛrɛnnenya la, sɔgɔsɔgɔninjɛ caman ni sɔgɔsɔgɔninjɛ dɔgɔmanw ka ladamu
Ɲɛgɛnɛsiraw hakɛ caman (misali la, Dow 7385, sɔgɔli cogoya >10N/25mm): MQ resin doni min ka bon, o bɛ tack fɔlɔ ni peel fanga ɲuman di, nka o bɛ kɛ ni funteni kunbɛnni ni jɛɲɔgɔnya sabatili musaka ye. U bɛ wuluwuluw bɔliba jira kɔrɔya kɔfɛ wa u ka teli ka tolenw sɔrɔ ka da resin funteni tiɲɛni kan. Aw bɛ a kɛ dɔrɔn ni a bɛ kɛ ni funteni dɔgɔyalen ye tuma ni tuma.
Filimu lakanani hakɛ minnu ka dɔgɔn, minnu bɛ ɲɔgɔn siri kosɛbɛ: Crosslink density ka bon, o bɛ peel baarakɛcogo sabatilen di ani ka kɔrɔya sabatili ɲuman di, nka tack fɔlɔ ka dɔgɔn. Kɔrɔlen kɔfɛ, u bɛ to ɲɔgɔn fɛ nka u bɛ gɛlɛya, o bɛ dɔ bɔ u ka se ka bɛn yɔrɔ gɛlɛnw ma.
Crosslinking Mechanism – Perokisidi ni farali furakɛli (Methyl Base kelen) .
Hali ni o polimɛri metilɛri kelen ye, furakɛli fɛɛrɛ bɛ kɔrɔya kɛcogo Changer kosɛbɛ.
1. Peroxide-cured (a bɛ kɛ cogo min na fɔlɔ la) .
Peroxyde tolen bɛ kɛ sababu ye ka crosslinking kɔfɛ min tɛ se ka kunbɛn, kɔrɔya waati min na funteni ka bon.
Peel fanga bɛ wuli a daminɛ na, o kɔ a bɛ bin kosɛbɛ.
Jɛɲɔgɔnya bɛ wuli waati dɔɔnin kɔnɔ, o kɔfɛ, bɔgɔbɔgɔli ni kuran minɛcogo tiɲɛni.
Batch-to-batch kɔrɔya ɲɔgɔndan tɛ.
2. Furakɛcogo min bɛ kɛ ni farali ye (hydrosililation curing) .
Furakɛcogo tɛ kɔlɔlɔ si lase mɔgɔ ma; crosslink network ye fɛn ye min bɛ se ka kɔlɔsi tigitigi.
Kɔrɔya kɔfɛ nafolo caman yeli bɛ tugu ɲɔgɔn kɔ ni ŋaniya sinsinni ye min bɛ se ka fɔ ka ɲɛ.
A ɲɛkisɛw marali ni u ka jɛɲɔgɔnya sabatili ka fisa kosɛbɛ ni i ye a suma ni perokisidi furakisɛw ye.
Kalanso sugandili ɲɛminɛcogo
Baarakɛcogo cogoya
Kalanso min bɛ ladilikan di
Munna
Funteni caman bɛ to sen na (>200°C), a ɲɛkisɛ bɛ sabati, a tolen tɛ zeru
Furakɛcogo faralen ɲɔgɔn kan, fenili caman bɛ min na (misali la, Dow 7388, Q2-7406) .
>85% peel retention, no brittlement, >80% holding power retention
Funteniba min bɛ kɛ waati kunkurunnin kɔnɔ, a musaka ka dɔgɔn
A bɛ sɔn nka aw bɛ a jira ko a ɲɛkisɛw bɛna tiɲɛni dɔw kɛ ani a bɛ se ka kɛ ko a bɛ se ka tiɲɛ siɲɛ janw kɔnɔ
A ka kan ka kɛ ni ɲɛgɛn fɔlɔ ye min ka bon kosɛbɛ, a funteni ka dɔgɔn dɔrɔn
Metil grade min ka bon ni peel ye
A tɛ kɛ funteni caman na min bɛ to senna; aw bɛ tolenw makɔnɔ kɔrɔya kɔfɛ
Filimu min bɛ mɔgɔ tanga, jɛɲɔgɔnya ka bon, tack dɔgɔman
High-crosslink low-peel grade (kɛrɛnkɛrɛnnenya la
Kɔrɔya sabatili ɲuman nka a gɛlɛyara ani a tɛ bɛn kosɛbɛ
Aokai PTFE ladilikan : Ni PTFE kasɛti o kasɛti bɛna funteni sabatilen ye ka tɛmɛ 200°C kan, aw bɛ metilfenili silikɔni PSA furakɛlen dɔ fɔ. Musaka min bɛ kɛ ka kɔn o ɲɛ, o ka ca, nka a bɛ foro dɛsɛw bali minnu bɛ sɔrɔ nɔrɔli tolenw fɛ walima bond bɔnɛ fɛ.
Kuma surun – Silikɔni PSA hakɛ bɛnni ni funteni ɲinini ye
Silikoni suguya metilɛri PSA (kɛrɛnkɛrɛnnenya la min furakɛra ni perokisidi ye) bɛnnen don dɔrɔn a tali la waati ni waati walima funteni dɔgɔyalen na. Tile 7 kɔfɛ 250°C la, aw bɛ a jira ko 30-50% bɛ bɔ ɲɛgɛnɛsira la ani ka se ka sɔgɔsɔgɔ.
Methylphenyl (high-phenyl) silicone PSA bɛ >85% to a ɲɛkisɛ fanga la ani a ka jɛ ka se ka wuli ka bɔ a nɔ na o kɔrɔya kelen kɔfɛ. O ye sugandili ye min bɛ kɛ ka taa a fɛ 200-250°C la.
Crosslinking mechanism nafa ka bon kosɛbɛ: farali furakɛli (hydrosilylation) bɛ sabati kosɛbɛ ka tɛmɛ perokisidi furakɛli kan.
Peel grades minnu ka ca, olu bɛ kɔrɔya sabatili jago ka kɛ tack fɔlɔ ye – aw bɛ aw yɛrɛ tanga u ma baarakɛcogo funtenimaw na.
Walasa ka jɛɲɔgɔnya ɲini funteni caman na, Aokai PTFE bɛ baara kɛ ni metilfenili silikɔni PSAw ye minnu furakɛra ni farali ye. An bɛ se ka peel retention data di 1000h kɔfɛ 250°C la ni ɲinini kɛra.
Walasa ka fɛɛrɛko kunnafonidilanw ɲɛfɔlenw sɔrɔ ani ka fɛɛrɛw tigɛ minnu bɛ kɛ ka kɛɲɛ ni mɔgɔw sago ye PTFE finiw, kasetiw, cɛsirilanw, ani fɛn wɛrɛw kama:
Ka tugu baarakɛcogo ɲuman ni danbe la, an bɛ furaw di minnu bɛ kɛ ka kɛɲɛ ni mɔgɔw sago ye yɔrɔ kelen na ani feereli kɔfɛ baara minnu bɛ kɛ ni hakili ye.
