Fluoroelastomer (FKM) nafa min ka bon kosɛbɛ, o ye a tɛ se ka funteni dɔgɔya. FKM filaninw ka funteni dɔgɔyalen kɔsegin funteni (TR10) bɛ kɛ -18 fo -16 °C ye caman na, ani gilasi jiginni funteni (Tg) ye -20 °C ye; FKM sabanan ka funteni dɔgɔyali ka dɔgɔn ka tɛmɛ FKM fila ta kan. FKM suguya kɛrɛnkɛrɛnnen min bɛ funteni dɔgɔya, o bɛ se ka funteni dɔgɔya, nka a sɔngɔ ka bon kosɛbɛ.
FKM ka ASTM D 2000-2012 'mobili lamini fɛnw danfaracogo sariya' la M2, M5, M6 grade fɛnw na minnu wajibiyalen don walasa ka tɛmɛ funteni dɔgɔyalen bɔgɔbɔgɔ F15 (-25 °C) sɛgɛsɛgɛli la, M4 grade fɛnw wajibiyalen don ka tɛmɛ funteni dɔgɔman bɔgɔbɔgɔ F17 (-40 °C) sɛgɛsɛgɛli la. San laban ninnu na, FKM fɛn caman ka kan ka kɛ walasa ka funteni caman kunbɛnni (250-275 °C) ani funteni dɔgɔyali F15 walima F17 fila bɛɛ ka ɲininiw dafa. Fɛɛrɛ ɲuman ye ka FKM funteni dɔgɔyalen kɛ, i n’a fɔ brittleness temperature of -45 ~ -40 °C Viton GLT type FKM, nka nin FKM funteni caman baarakɛcogo in man ɲi, wa a sɔngɔ ka gɛlɛn ka sugu kɛ fɛn ye min bɛ sɔn. Ni FKM filaninw ka baarakɛcogo ɲɛ ka taa a fɛ, olu bɛ se ka funteni dɔgɔya ni funteni caman kunbɛnni wajibiyalenw dafa waati kelen na, wa musaka fana bɛ bɛn, o kɛra ɲininikɛyɔrɔ duman ye.
Nin sɛbɛn in bɛ FKM ka Tg, TR10 ni brittleness temperature (Tbri) ka baarakɛcogo jiracogo sɛgɛsɛgɛ, min bɛ jɛɲɔgɔnya min bɛ kalanso kɔfɛ kalandenw ni ɲɔgɔn cɛ, fillers, mixing process, a ɲɔgɔnnaw FKM adhesive binary ni ternary kan low-temperature brittleness performance kan walasa ka FKM adhesive low-temperature-resistant labɛn walasa ka kunnafoni di !
1. FKM ka funteni dɔgɔyalen sɔgɔsɔgɔninjɛ jogo jirali
Lastikuw bɛ ni bɔgɔlan ye min bɛ Se ka Yɛlɛma, a bɛ Se ka bɔgɔbɔgɔba Lase kɛnɛma fanga fitinin dɔ ka baara ma, wa a bɛ Se ka Segin a cogo kɔrɔ la kɛnɛma fanga bɔlen kɔ, o la a bɛ Kɛ kosɛbɛ. Nka ni funteni bɛ dɔgɔya, lastikuw ka sɔgɔli bɛ tiɲɛ dɔɔni dɔɔni, n’a sera Tg ma, lastikuw bɛ bɔnɛ a ka sɔgɔli la, wa a bɛ dɛsɛ. K’a sababu kɛ lastikuw suguya caman ye, a kɛcogo la, a bɛ se ka kɛ ni sɔgɔsɔgɔninjɛ ye, ka sɔgɔsɔgɔ, ka sɔgɔsɔgɔ, ka wuli, ka bɔli kɛ, ka sɔgɔsɔgɔ, a ɲɔgɔnnaw, a ka sɔgɔsɔgɔninjɛ kɛcogo min bɛ funteni dɔgɔya la, o ka kan ka da a ka baarakɛcogo kan walasa ka sɛgɛsɛgɛli fɛɛrɛ bɛnnen sugandi. Fɛɛrɛ minnu bɛ kɛ ka caya ni funteni dɔgɔyalen ye, olu ye Tg sɛgɛsɛgɛli ye, impact brittleness temperature test, funteni dɔgɔyalen kɔsegin sɛgɛsɛgɛli, funteni dɔgɔyalen torsional rigidity test (Gimen test), resistance to stretching and cold coefficient test, low-temperature hardness test, low-temperature compression permanent deformation and stress relaxation test, wdfl.
FKM ka funteni dɔgɔyali kunbɛnni bɛ se ka kɛ Tg, Tbri, TR10 ani Torsion Temperature at low temperature (TGem), wdfl Nin paramɛtiriw kɔrɔ tɛ kelen ye nka jɛɲɔgɔnya dɔw bɛ u ni ɲɔgɔn cɛ.
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(3) TR10 bɛ kɛ ka lastikuw ka sɔgɔsɔgɔninjɛ ni a ka kristalize nɔ jateminɛ funteni dɔgɔman na, wa a ka c’a la, a bɛ funteni dɔgɔyalenba jira, lastikuw fɛn dɔ bɛ se k’a ka sɔgɔsɔgɔninjɛ seginni sabati min na.
. Lastikuw ka torsion angle ka kɛɲɛ ni funteni caman yeli ye, o bɛ se k’a ka funteni dɔgɔya baarakɛcogo jateminɛ, a ka c’a la, o bɛ funteni dɔgɔyalenba jira, lastikuw bɛ a ka lastikuw mara yɔrɔ min na.
2 FKM Tg, TR10 ani jɛɲɔgɔnya min bɛ Tbri ni ɲɔgɔn cɛ
FKM min bɛ baara kɛ kosɛbɛ ni funteni dɔgɔyalen sɔgɔsɔgɔninjɛ baarakɛcogo paramɛtiriw ye olu ye Tg, TR10 ani Tbri ye, a ka c’a la, feerekɛla bɛ paramɛtiri Tg ni TR10 ta, ASTM bɛ paramɛtiri Tbri ta, danfara ni jɛɲɔgɔnya dɔw bɛ nin saba ninnu cɛ.
2. 1 Jɛɲɔgɔnya min bɛ Tg ni TR10 cɛ
FKM suguya kelen-kelen bɛɛ ka TR10 bɛ surunya Tg la (danfara tɛ tɛmɛ 3 °C kan), o b’a jira ko Tg ni TR10 fila bɛɛ bɛ se ka lastikuw molekiyɔmu cakɛda ka funteni dɔgɔyalen lamagacogo ni galasi cogoya funteni jira.
2.2 Jɛɲɔgɔnya min bɛ FKM fluorine hakɛ ni funteni dɔgɔyalen sɔgɔsɔgɔninjɛ nafaw cɛ
FKM fila ni saba minnu bɛ kɛ ɲɔgɔn fɛ, TR10 bɛ bonya ni fluorine hakɛ cayara; ni monomɛri naaninan dɔ donna a kɔnɔ, n’o ye PMVE ye, a kɔnɔkow bɛ nɔba bila TR10 la.
A kɔnɔkow bɛ nɔba bila TR10 la. Hali ni fluorine hakɛ caya bɛ se ka FKM baarakɛcogo funteni sanfɛla dancɛ ɲɛ, nka o waati kelen na, ka da CF jɛɲɔgɔnya kan, o bɛ CH jɛɲɔgɔnya bila a nɔ na, o bɛ dɔ bɔ molekiyɔmu cakɛda nɔgɔya la ani ka dɔ bɔ lastikuw ka baarakɛcogo la funteni dɔgɔyalen na.
2.3 Fasafɛnw ka nɔ bila FKM fɛnɲɛnamafagalanw ka funteni dɔgɔyalen sɔgɔli cogoyaw la
N774 nɛgɛ min ye nɛrɛmuguma ye, o ka Tbri ka dɔgɔn ani a bɛ se ka funteni dɔgɔya ka ɲɛ; zinki ɔkisidi nɔrɔlan bɛ Tbri sɔrɔ ka tɛmɛ tɔw bɛɛ kan ani a ka jugu ni funteni dɔgɔyali kunbɛnni ye; nɔrɔlan suguya duuru ninnu ka funteni dɔgɔyali baarakɛcogo tɛ danfaraba la. Sɛgɛsɛgɛli kɔfɛ, fasa suguya wɛrɛw farali kɔfɛ, FKM molekiyɔmu cakɛdaw ni ɲɔgɔn cɛ danfara ni u jɔcogo tɛ kelen ye, wa o bɛ bɛn funteni dɔgɔyalen sɔgɔli baarakɛcogo ma.
Sɛgɛsɛgɛli kɔfɛ, fasa suguya wɛrɛw faralen kɔfɛ, FKM molekiyɔmu cakɛdaw ni ɲɔgɔn cɛ yɔrɔw ni u jɔcogo tɛ kelen ye, wa funteni dɔgɔyalen sɔgɔli cogoya minnu bɛ bɛn o ma, olu tɛ kelen ye, wa fasa min bɛ ni lastikuw hakɛ fitinin ye, o ka jeli hakɛ ka bon ani funteni dɔgɔyalen kɛlɛli ka fisa.
2.4 ɲagami taabolo nɔ min bɛ FKM fɛnɲɛnamafagalanw ka funteni dɔgɔyalen sɔgɔli cogoyaw la
O ɲagami kɛcogo fana bɛ nɔ bila FKM fɛnɲɛnamafagalanw ka funteni dɔgɔyalen sɔgɔli cogoyaw la. Ni aw ye plastiki kɛ sani aw ka ɲagami, o bɛ se ka lastikuw molekilɛri sɛgɛsɛgɛli sɔrɔ ka ɲɛ
Fɛnɲɛnɛma in ka funteni dɔgɔyali bɛ se ka ɲɛ ni a kɛra plastiki ye sani a ka ɲagami. Furakɛli min bɛ kɛ ni tɛmɛsira finman ye, o kɛlen kɔfɛ, o bɛ se ka fasa ni fɛnɲɛnɛmafagalanw jɛnsɛnni cogoya ɲɛ, ani ka funteni dɔgɔyali kunbɛncogo ɲɛ. A ka c’a la, ni mɔli janyalen don, lastikuw ka Mooney sɔgɔli bɛ dɔgɔya. Ni dɔ farala lastikuw hakɛ kan, o bɛna dɔ bɔ lastikuw ka Tg la, nka o ko in tɛ kosɛbɛ, wa danfaraba tɛ FKM lastikuw ka Tg ni Tbri cɛ ni lastikuw hakɛ tɛ kelen ye.
3 Kuncɛli
(1) FKM ka Tg bɛ gɛrɛ TR10 ta la, o bɛ se ka FKM molekiyɔmu cakɛda ni gilasi cogoya funteni ka funteni dɔgɔyalen lamagacogo jira, wa Tbri ka dɔgɔ ni Tg ni TR10 ta ye.
bɛ dɔgɔya ka tɛmɛ Tg ni TR10 kan.
(2) FKM fluorine caman min bɛ perokisidi sulfuri la, o ka funteni dɔgɔyali nafa ka fisa, ani bisifenɔli binary sulfurized FKM ka funteni dɔgɔyali nafa ka jugu.
(3) FKM lamini min falen bɛ karɔbɔli nɛrɛma N774 la, o bɛ se ka funteni dɔgɔya ka ɲɛ; lastikuw ni fasa hakɛ dɔɔni bɛ a la, jeli hakɛ ka ca a la ani a bɛ se ka funteni dɔgɔya ka ɲɛ.
(4) Moulding waatiw hakɛ tɛ nɔba bila FKM fɛnɲɛnamafagalanw ka funteni dɔgɔyalen bɔgɔbɔcogo la.
