1.Application Scope .
(1). A bɛ kɛ ka ɲɛsin lastikuw ma minnu tɛ satura: i n’a fɔ NR, BR, NBR, IR, SBR, wdfl.
(2). Aw bɛ a kɛ lastikuw saturalen na: i n’a fɔ EPM bɛ se ka vulkanize dɔrɔn perokisidi fɛ, EPDM bɛ se ka vulkanize perokisidi ni kisɛ fila bɛɛ fɛ.
(3). A bɛ kɛ cakɛda suguya caman na: i n’a fɔ q vulkanization.
2. Perokisidi vulkanization system ka jogo .
(1). Vulcanized lastikuw ka rezo jɔcogo ye CC bond ye, ni jɛɲɔgɔnya fanga ka bon, a bɛ sabati kemikaliya la, ani a bɛ se ka a yɛrɛ tanga kosɛbɛ funteni ni oksizɛni kɔrɔya ma.
(2). Vulcanized rubber bɛ ni deformation permanent ye, elasticité ɲuman ani dynamique baarakɛcogo jugu.
(3). Baarakɛcogo ɲuman lakanabaliya ani perokisidi sɔngɔ gɛlɛn.
(4). Ni sigili jɔlen don walima ni funteni caman bɛ sigi sen kan, olu bɛ baara caman kɛ.
3 (Perokisidi minnu bɛ kɛ ka caya .
Perokisidi vulkanisant minnu bɛ kɛ ka caya, olu ye alkili perokisidiw, diasili perokisidi (dibenzoyl perokisidi (BPO)) ani perokisi ɛsitɛriw ye. Olu la, dialkyl peroxides bɛ kɛ ka caya. i n’a fɔ: diisopropil perokisidi (DCP): sisan, a bɛ kɛ ka caya ka tɛmɛ fɛn tɔw bɛɛ kan.
2,5-dimetil-2,5-(di-tert-butylperoxy) hɛkɛsi: a bɛ fɔ fana ko bis-dipentityl .
4. Perokisidi vulkanizasiyɔn fɛɛrɛ .
Perokisidi kulu min bɛ perokisidi la, o bɛ tiɲɛ nɔgɔya la funteni fɛ walasa ka radikaliw sɔrɔ, minnu bɛ radikali suguya caman ɲɔgɔnna ɲɔgɔn cɛ ka ɲɛsin lastikuw molekiyɔmu cakɛda ma.
5. Perokisidi vulkanizasiyɔn yɔrɔ kolomaw:
(1). A tata hakɛ : a bɛ danfara ni lastikuw suguya wɛrɛw ye .
Perokisidi ka ɲɔgɔndan nafama : 1G perokisidi fɛnɲɛnamafagalan 1G bɛ se ka kɛ ka lastikuw garamu hakɛ min dilan, o bɛ kɛ sababu ye ka fɛnɲɛnamafagalanw ka ɲɔgɔndan kɛ.Ni perokisidi mɔlikulu 1 bɛ se ka 1G molekilu dilan ni lastikuw ye minnu bɛ ɲɔgɔn cɛ, ɲɔgɔndan nafa ye 1 ye.
Misali la: SBR ka cross-link efficiency ye 12,5 ye; BR ka ɲɔgɔndan kɛcogo ɲuman ye 10,5 ye; EPDM, NBR, NR ka ɲɔgɔndan nafama ye 1 ye; IIR ka cross-link efficiency ye 0 ye.
(2). Baara kɛli ni walekɛbaa ye ani a bɛ kɛ ni ɲɔgɔndɛmɛbaga ye walasa ka cross-linking efficiency ɲɛ .
ZnO jɔyɔrɔ ye ka nɛgɛmafɛnw ka funteni kunbɛn, a tɛ kɛ a activator ye. Asidi stɛariki jɔyɔrɔ ye ka ZnO ka wulicogo ni a jɛnsɛnni ɲɛ ka ɲɛ lastikuw la. HVA-2 (n,n’-phthalimido-dimaleimide) fana ye perokisidi (peroxide) waleyali ɲuman ye.
Ni aw bɛ aksizili vulkanizing agent fara a kan: kɛrɛnkɛrɛnnenya la kisɛ jɛman, ani dɛmɛlan wɛrɛw minnu bɛ ɲɔgɔn cɛ i n’a fɔ divinylbenzene, trialkyltricianate, carboxylates saturated, wdfl.
(3). Aw bɛ fɛn dɔw fara a kan minnu bɛ kɛ ni alkali ye, i n’a fɔ MGO, triethanolamine, a ɲɔgɔnnaw, walasa ka ɲɔgɔndan kɛcogo ɲuman sabati, aw bɛ aw yɛrɛ tanga slot carbone noir ni silica ani acide fillers wɛrɛw ma (asidi ka kɛ sababu ye ka radicals frees passivation kɛ) A ka ca a la, farikolo tangalanw ye amina ni fenɔli antioxydants ye, olu fana ka nɔgɔn ka free radicals passivation kɛ, ka dɔ bɔ cross-linking ka baarakɛcogo ɲuman na, u ka kan ka kɛ dɔɔni dɔɔni.
(4). Vulkanization température : ka kan ka tɛmɛ perokisidi ka tiɲɛni funteni kan .
(5). Vulkanization waati: A ka c’a la 6~10 waatiw la perokisidi tilancɛ la.
Perokisidi tilancɛ-ɲɛnamaya : funteni dɔ la, perokisidi tiɲɛni waati hakɛ fɔlɔ tilancɛ la, min bɛ fɔ T1/2 la.
Ni DCP tilancɛ bɛ 170°C la o ye 1min ye, o tuma a ka sulfasiyɔn waati ɲuman ka kan ka kɛ 6~10min ye.
Furakɛcogo misali: EPDM 100 (base) .
S 0.2 (A ka ca a la, a bɛ se ka kɛ ko a bɛ se ka kɛ ko a bɛ se ka kɛ ko a bɛ se ka kɛ .
SA 0.5 (Baarakɛla) .
ZNO 5.0 (walasa ka funteni kunbɛn) .
HAF 50 (Agent min bɛ fanga di mɔgɔ ma) .
DCP 3,0 (Agent Thixotropic) Bamako, Mali.
MGO 2.0 (a bɛ se ka kɛ sababu ye ka ɲɔgɔndan kɛcogo ɲuman sɔrɔ) .
Tulu min bɛ baara kɛ 10 (a bɛ se ka kɛ fɛn ye) .
